ENSONIQ ASR-10 Service manual

ASR

Service Manual

P/N 9312001801 . B

I EN50Ni’alm

November 1995

Table

of Contents

TABLE OF CONTENTS

IMPORTANT THINGS TO KNOW

Known Areas of Concern ................................................................................................... 1

Avoid Damage from ESD (Electrostatic Discharge) ............................................................

1

SIMMS .................................................................................................................................. 1

What SIMMs to Use ............................................................................................................. 1

What Changed?

..................................................................................................................... -

How to Tell Which Rev Board You Have ............................................................................

3 -

THE DISK DRIVE ............................................................................................................. 3

Transporting a unit ................................................................................................................ 3

What disks to use .................................................................................................................. 3

Testing the Disk Drive.. ........................................................................................................ 3

UNIT SOUNDS DISTORTED.. .........................................................................................

4

FUSES .................................................................................................................................. 5

The 20-pin KeyboardIKPC Simulator Ribbon Cable ...........................................................

5

Customer Thinks the Unit is Broken ....................................................................................

5

MECHANICAL ISSUES.. .................................................................................................. 6

ASR C a s e (Avoid Stripping Screws). ...................................................................................

6

High - retention Force Connectors (Repair Technicians Label) ........................................... 6

OEX-6sr Connector on ASR Keyboard and ASR-88 Caution! Important! .......................... 7

HOW THE ASR WORKS.. ...................................................................................

.............. 7

Keyboard and Rack Similarites.. ........................................................................................... 9

Communications Path ........................................................................................................... 9

TROUBLESHOOTING

CHECKING THE POWER SUPPLY ..............................................................................

1 2

Analog Board Regulator Voltages ........................................................................................ 1 2

POWER SUPPLY VOLTAGE CHECK POINTS ..........................................................

1 3

Fuse Ratings .......................................................................................................................... 1 3

TESTING THE POWER SUPPLY UNLOADED ...........................................................

1 4

CHECKING THE DISPLAY ............................................................................................ 1 6

DISPLAY SELF-TEST MODE ......................................................................................... 1 6

Using Self-Test Mode to Diagnose the Keypad/Display Board.. .......................................... 1 6

Troubleshooting an ASR-10 With No LEDS Lit .................................................................. 1 7

Troubleshooting an ASR-10 With All LEDS Lit, No Display ............................................. 1 8

KEYBOARD AND FOOTSWITCH INPUTS .................................................................

1 9

The ASR-10 Keyboard and the KPC Simulator Board.. ....................................................... 1 9

ASR-10 Footswitch and Patch Select Inputs ........................................................................

1 9

ASR-88 KEYBOARD ....................................................................................... .:. ............... 2 0

Key Response Problems.. ...................................................................................................... 2 0

Pressure Response Problems.. ............................................................................................... 2 2

ERROR MESSAGES ......................................................................................................... 23

ASR-10188 SOFTWARE NOTES.. ........ . ...........................................................................

25

ASR TEST PROCEDURE.. ............................................................................................... 35

1. Power Up and Load in Sounds.. ........................................................................................ 35

2 . Keyboard Test (ASR-10188 Keyboard Only) ................................................................... 35

ASR Service Manual c

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Table

of

Contents

3. Headphone Check .............................................................................................................

35

4.

MIDI Test.. ........................................................................................................................ 35

5 . Anlog Page.. ...................................................................................................................... 36

6.

Disk Check.. ...................................................................................................................... 37

7 . Sampling Check.. .............................................................................................................. 37

8.

OEX-6sr Check.. ............................................................................................................... 38

REPLACING ASR-lOh38 MODULES ..............................................................................

41

Section A - Replacing the Digital Board ..............................................................................

41

Section B - Replacing the Analog Board.. ............................................................................

Section C - Replacing the Power Supply Board ...................................................................

4 2

4 3

Section D - Replacing the Keypad/Display Board.. ..............................................................

Section E- Replacing the Keyboard (ASR-10) ....................................................................

Section E - Replacing the Keyboard (ASR-88) ....................................................................

4 4

4 5

4 6

Section F - Replacing the Digital Jack Board.. .....................................................................

Section G - Replacing the Analog Jack Board.. ....................................................................

Section H - Replacing the Disk Drive.. .................................................................................

Section I - Replacing the Transformer.. ................................................................................

Section J - Replacing the Line Filter.. ...................................................................................

Section K - Installing and Removing the SCSI Board.. ........................................................

4 7

4 7

4 8

4 8

Section L - Replacing the Digital I/O Option Board ............................................................

Section M - Replacing the O.S. EPROMs.. ..........................................................................

Section N - Replacing the Wheel Assembly.. .......................................................................

4 9

5 0

5 1

5 3

5 4

56 REPLACING ASR RACK MODULES.. ..........................................................................

Section A - Replacing the Rack Digital Board .....................................................................

Section B - Replacing the Rack Analog Board .....................................................................

Section C - Replacing the Rack Power Supply Board.. ........................................................

Section D - Replacing the Rack Keypad/Display Board ......................................................

Section E - Replacing the Rack KPC Simulator Board ........................................................

Section F - Replacing the Rack Digital Jack Board.. ............................................................

Section G - Replacing the Rack Analog Jack Board ............................................................

Section H - Replacing the Rack Disk Drive .........................................................................

Section I - Replacing the Rack Transformer.. .......................................................................

Section J - Replacing the Rack Line Filter ...........................................................................

Section K - Replacing the Rack S C S I Board.. ......................................................................

Section L - Replacing the Rack Digital I./O Option Board ...................................................

Section M - Replacing the Rack O.S. EPROMs ...................................................................

Section N - Replacing the Rack OEX-6sr Board.. ................................................................

Section 0 - Replacing the P C B Mounting Bracket ..............................................................

IMPORTANT INFORMATION ABOUT SJMMs.. ........................................................

SCSI INFORMATION.. .....................................................................................................

6 0

6 0

61

6 2

6 2

63

5 6

5 7

58

5 9

6 0

63

6 5

65

6 6

67

74

DIGITAL I/O INFORMATION.. ......................................................................................

OEX-6sr INFORMATION ................................................................................................

76

77

Glossary.. ............................................................................................................ Inside back cover

Part Numbers for ASR Modules ........................................................................

Inside back cover

Contacting ENSONIQ.. ......................................................................................

Outside back cover

ASR

Service Manual

Table of Contents

LIST OF FIGURES

Figure 1 - Note the single jumper above the Simm slots ...................................................... 2

Figure 2 - Note the two different jumpers above theSEvIM slots ......................................... 2

Figure 3 - Rear view of Panasonic Disk Drive ..................................................................... 3

Figure 4 - Correct Sony 420-l jumper settings.. ................................................................... 4

Figure 5 - Correct tool for removing cables.. ........................................................................ 6

Figure 6 - ASR Block Diagram.. ........................................................................................... 7

Figure 7 - Communications Path .......................................................................................... 1 0

Figure 8 - AC Line Voltage Check Points ............................................................................ 1 2

Figure 9 - ASR-10 Power Supply Board.. ............................................................................. 1 3

Figure 10 - Incorrect Analog Power Supply Voltages (flow chart) ...................................... 1 4

Figure 11 - Incorrect Digital Power Supply Voltages (flow chart) ....................................... 1 5

Figure 1 2 - N o LEDs Lit (flow chart) ................................................................................... 1 7

Figure 1 3 - All LEDs Lit, No Display (flow chart). .............................................................. 1 8

Figure 1 4 - ROM and disk Compatibility ............................................................................. 25

Figure 1 5 - ASR-10 Exploded View.. ................................................................................... 3 9

Figure 1 6 - ASR-88 Exploded View.. ................................................................................... 40

Figure 1 7 - ASR-10 Digital Board.. ...................................................................................... 4 2

Figure 18 - ASR-10 Analog Board ....................................................................................... 4 2

Figure 1 9 - ASR-10 Center Support Bracket Assembly.. ..................................................... 4 4

Figure 20 - ASR- 10 Keyboard Mounting Bracket.. .............................................................. 4 6

Figure 21 - ASR-88 Bracket locations.. ................................................................................ 4 6

Figure 22 - SCSI Board Mounting ........................................................................................ 5 0

Figure 23 - Installing a DI-10 Board into an ASR-10 Keyboard Unit .................................. 5 2

Figure 2 4 - ASR-1OR Exploded View.. ................................................................................ 55

Figure 25 - Top Side of the ASR-10 Rack PCB Mounting Bracket ..................................... 6 4

Figure 26 - Installing a DI-10 Board into an ASR-10 Rack Unit.. ........................................ 6 4

Figure 2 7 - SIMM Layout.. ................................................................................................... 67

Figure 2 8 - Board differences ............................................................................................... 68

Figure 2 9 - Simm Access on the new Rev Board ................................................................. 7 0

Figure 30 - THESE ARE THE ONLY CONFIGURATIONS THAT WILL WORK PROPERLY!. . .7 1

Figure 3 1 - SIMM Access on the Old Rev Board.. ............................................................... 71

Figure 32 - THESE ARE THE ONLY CONFIGURATIONS THAT WILL WORK PROPERLY!. . .72

Figure 33 - SIMM Socket Components ................................................................................ 7 2

Figure 3 4 - Removing SIMMs .............................................................................................. 7 3

Figure 3 4 - Installing SIMMs.. .............................................................................................. 7 3

Figure 3 6 - A properly Installed SIMM ................................................................................ 73

ASR Service Manual

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Important

IMPORTANT THINGS TO KNOW ABOUT THE ASR-1 O/88

About this manual: The instructions in this manual are for both the ASR-10/M? Keyboard and Rack

unless otherwise noted. When you are troubleshooting an ASR Rack and the instructions say to check the keyboard, substitute a check of the KPC simulator board. When you are troubleshooting an a ASR-88 and the instructions say to check the keyboard, substitute a check of the keyboard adapter board.

As with every ENSONIQ product, all ASR service is handled through the ENSONIQ Module Exchange

Program. Rather than diagnose and exchange individual components, you will replace complete modules.

We feel that this is the most time and cost effective method of repair, both for you and your customers.

Known Areas of Concern

The four known problem areas of ASRs have been: 1) SIMMs; 2) the disk drive; 3) distorted sound; and 4) fuses blowing. Those items marked with a G+= are known areas of concern, other items are important things to know about the ASR.

* Avoid Damage from ESD (Electra Static Discharge) !!!

l when working on ENSONIQ products.

Before beginning any work you should be grounded. Discharge any static electric charge built up on the l body. This will be accomplished by using a ground strap that attaches to your wrist and ground leaving your hands free to work.

Always look for ESD warnings before opening any packages from ENSONIQ.

l

Always avoid unnecessary physical movement, such as scuffing the feet when handling ESD sensitive devices. That kind of movement can generate additional charges of static electricity.

l

Minimize handling of ESD sensitive devices. Keep ESD sensitive devices in their static free packages until needed. Only transport or store ESD sensitive devices in their protective packages.

l

When handling ESD sensitive devices, avoid touching any connector pins, leads, or any other electrical connections on the board. Try to handle ESD sensitive devices by the edges only.

a=SIMMs

Often a customer may think that a unit is broken, when it simply does not have the correct SIMMs installed.

It is important to thoroughly qualify the SIMMs that are installed before troubleshooting further. Read and understand the following notes about SIMMs, and refer to the special SIMMs section at the rear of this manual to be sure a customer is not experiencing problems due to incorrect SIMMs, or SIMMs that are not installed properly.

What SlMMs to Use

The ASR-10 and ASR-88 mainboard has been redesigned. It changes the type of SlMMs that can be used, and the way that you install the SIMMs. The new mainboard is used starting from the following serial numbers:

ASR-10 -

ASR- 1 ORack -

ASR-10 w/SCSI -

ASR-88 -

20677

014567

13126 all units

4SR Service Manual 1

Important

Note: It is possible that your unit has a different rev board than these cutoffs suggest, due to a repair or other circumstance. Be sure to check it against the diagrams here to confirm which rev board you have.

What Changed?

The newer board can accept 2 chip and 8 chip 4meg SIMMs. The older board can only use the 8 chip parts.

Since the 2 chip parts are becoming more common (and possibly less expensive) we redesigned the board to allow you to use them.

How to Tell Which Rev Board You Have

The old rev board looks like this:

M6.4 EXP JMP

- Jumper is connected for

STANDARD SIMM Memory.

Move to the other pins when using Expansion SIMM Slots.

- Two 1-MegaByte SlMMs

- Expansion slots are empty

Figure 1 - Note the single jumper above the SIMM slots.

The new rev board looks like this:

SIMM Size Jumpers (2) are set to 1 M (1 MegaByte

SIMMS). Move the jumpers to the 4M p o s i t i o n s w h e n c h a n g i n g to 4 MegaByte SIMMS.

DEJYPI WN

i EXPANSON YMRY

)

Smndrfd SIMM Sk

- Jumoer is connected for


Move to the other pins when using expansion SIMM slots.

- Two 1 MegaByte SlMMs


Figure 2 - Note the two different jumpers above the SIMM slots.

0 Keyboard - SIMMs may be installed by customer.

l Rack - SlMMs must be installed by Repair Stations because the lid must be removed.

0 The ASR uses 30-pin, D-RAM, 1Meg x 8 or 4Meg x 8 (Macintosh-type) non-parity SIMMs (not 1Meg x

9 or 4Meg x 9 parity SlMMs). The ASR will not accept static RAM or ROMs.

0 We do not recommend using parity SIMMs (designed for IBM PC compatibles). These SIMMs may not operate properly, and may cause damage to the ASR.

0 We recommend using SIMMs with an access speed of 80 nanoseconds or faster.

0 When installing SIMhJs be sure to move the jumper to the Expansion position.

2

ASR Sewice Manual

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Important l l l

If SIMMs are installed in a less than optimal configuration (see pp. 71-72), the display will read SIMMs

IN WRONG SOCKETS after booting. If this message is displayed, you should power off and check the

SIMMs configuration.

SIMMs that have GAL (gate array logic) or PAL (programmable array logic) chips on them may be too thick to fit into the standard sockets that are used on the ASR. Even if the SIMMs with GALS or PALS fit, they will draw too much power and certain configurations (i.e. 2M x8 SIMMs) will not work properly.

See Important Information About SIMMs, p. 67.

THE DISK DRIVE

Transporting a unit

We do not, under any circumstances, recommend the insertion of an actual disk during transport. Only transport the unit with the drive empty. Please do not ship an ASR or a replacement disk drive in a box

packed with foam peanuts. If you must use foam peanuts, wrap the entire unit in plastic first. Foam peanuts may cause severe damage to the disk drive or keyboard.

What disks to use

It is very important to use double-sided, double-density (DD) or high density (HD) 3.5” micro-floppy disks.

The ASR writes information to every track on a disk, so it is imperative that the disk be of superior quality.

Disks that have been pre-formatted for MS DOS are not always reliable and should not be used.

Testing the Disk Drive

The best way to test the disk drive is by formatting a disk. When a disk is formatted, the ASR reads and writes every track on that disk. If the formatting fails, the disk itself may be faulty. Try formatting another disk before determining that the disk drive is faulty. Unlike some computer systems, the ASR does not automatically discard bad sectors when formatting. The entire disk must be good for successful formatting.

There is an exception, a disk that has been pre-formatted for MS DOS may be able to be formatted for use in an ASR and still not work reliably in the ASR.

e A few different disk drives were used in the ASR: two types of Panasonic drive and one Sony drive.

Make sure that when you install a new Panasonic disk drive that the switches on the rear of the drive are set as shown in Figure 3. On some Panasonic disk drives, the Drive Select Switch has only two positions instead of four. The drive select should always be set to zero (0). If the drive cable is too short, you may also need a new 34 pin cable when replacing a Panasonic drive with a Sony drive.

-Make sure that this switch is in the middle!

Figure 3 - Rear view of Panasonic Disk Drive

4SR Service Manual 3

Imoortant e Customers may complain that their ASR will not read some of their disks. Please be aware that High

Density (I-ID) disks that have been formatted as Double Density (DD) on a DD drive in a unit such as an EPS,

EPS-16 PLUS, or a Macintosh Plus will not be recognized in machines that have an HD drive. This would include the ASR, as well

as an IBM PC or clone. Disks that have been pre-formatted for MS DOS are not always reliable and should not be used.

e On early units, removing the disk drive causes the disk drive bezel to break.

The Sony 420-l disk drive has a jumper block. The correct jumper settings are shown in figure 4.

Figure 4 - Correct Sony 420-l jumper settings

CF In keyboard units, some plastic on both the wheel cover and end cap has to be removed. Replacement disk drives now come with a template and instructions for cutting the plastic on the wheel cover for older units. See the information included with the new drive.

4 l l l l l l

UNIT SOUNDS DISTORTED

If the Peak LEDs on the Input Level are always on, this usually indicates a blown fuse.

Setting the loop end point before the loop start point can cause the unit to make funny sounds. To check this, select the sound that this is occurring on, then select the wavesample: press

Edit,

underline WS, and play a key that plays the offending sound so that the display shows a number (rather than ALL).

If no number will show up, underline layer and choose a new layer, then try again. Press

Wave, press right

arrow repeatedly until the display shows LOOP START. Note the percentage number in the parenthesis.

Press

right arrow again until the display shows LOOP END and note the number in the parenthesis for loop end. The loop end number must be larger than the loop start number. No factory sounds are shipped this way, so this is most likely to occur on sounds that the customer has created or modified.

Make sure that the cable for each jack board is connected properly.

ESP download failures will show up as either a “SYSTEM ERROR xxx” or as the outputs playing “dry” without any effects, with garbled effects, or with no sound at all. If sounds set to DRY sound fine, but sounds with effects don’t, replace the digital board.

KEYBOARD ONLY: If there is distortion on the tail of every sound, and the serial number of the unit is between 10970 and 11700, replace the analog board.

If a sample that the customer recorded into the ASR sounds distorted or there is a click in the beginning and/or end of the sound, check the A/D chip on the Analog board: a ) Make sure that NOTHlNG is plugged into either of the ASR Audio Input jacks.

b ) Keyboard only: Make sure that the MIC/LINE switch is in the LINE (down) position.

C

) Make sure that the Input Level pot is turned fully down (counterclockwise when facing the back of the ASR).

d) Press

Command, then Env 1.


Imnortant

e) Press the right arrow button until the display shows DC OFFSET.

fj’ Press Enter*Yes. The display should show: LEFT= +/-0000x RIGHT= +/-OOOOy g) If one or both of the values is 32,767 replace the analog board.

h) In a properly functioning unit, the reading should not be greater than 20 counts from zero (+/-

00020). If the values exceed this: RACK: Replace the analog board.

KEYBOARD: You can adjust each pot on the analog board to be as close to zero as possible:

1 ) You can adjust the pots (these are the only two pots on the analog board) with your fingers. You must reach under the unit and locate the pot that needs to be adjusted. Locate this visually before grabbing it. Slowly turn the pot clockwise (to the RIGHT) to increase the reading, or counterclockwise (to the LEFT) to decrease the reading.

2 ) If they cannot be adjusted within the allowable range of +/-00020, replace the Analog Board.

i) Press

Cancel*No to stop the test. The display shows: DC OFFSET

FUSES

l A system error may be the result of blown fuses. Check the fuses first.

0 If the Peak LEDs are always on, fuses may be blown. When the sample peak LEDs are on, it is usually a blown fuse.

.

Fuse Ratings (as of October, 1995)

UL rated fuses

(lOOV, 12OV,24OV)

Fl and F2 1.6A fast blow

F3 and F4 4.OA fast blow

F5 1.6A fast blow

F6 and F7 l.OA slow blow

F9 2.OA fast blow

IEC 127 rated fuses Where Used

(230V units only)

Tl .OA slow blow

F4.OA fast blow

F1.6A fast blow

Analog

+VD Digital/Display/KbdSCSI/DI-10

Display

Tl.OA slow blow

F2.OA fast blow

AIldOg

Line Fuse

The 20-pin Keyboard/KPC Simulator Ribbon Cable

When reconnecting this cable to the digital board, make sure that the striped side is aligned with pin 1 and that the cable is not mis-pinned. If the cable & r&-pinned or installed backward, fuses F3 and F4 on the power supply board will blow. NOTE: If one fuse blows, the other will blow also; you must replace both.

l

Customer Thinks the Unit is Broken

Version 240 KPC software, when you hold down

up arrow and press down arrow, numbers would scroll instead of going to the halfway point. A new keyboard with 2.41 fixes this problem. See Software

Notes.

0 The sampling “Level Detect” screen should be looked at as an averaging meter and not as an accurate or realtime signal. Some customers were concerned that their units were broken because the level detect indicator bounces all over the place or does not respond to peaks.

.

Customers may complain that their ASR will not read some of their disks. Please be aware that High

Density (I-ID) disks that have been formatted as Double Density (DD) on a DD drive in a unit such as an

EPS, EPS-16 PLUS, or a Macintosh Plus will not be recognized in machines that have an HD drive. This would include the ASR, as well as

an IBM PC or clone. Disks that have been pre-formatted for DOS are not always reliable and should not be used.

ISR Service Manual

5

6

Important

MECHANICAL ISSUES

Keyboard: Originally, three different types of screws were used in the ASR keyboard base pan 832s, two 6-32s into main board heat sink, and self-tapping into the extrusion. The 6-32s were eventually changed to 8-32s, so that there are now only two different types of screws.

Keyboard: On early units, you may break the disk drive bezel when removing the disk drive from the unit. The wheel cover was modified on later units to prevent this.

Keyboard: If the mounting posts for the wheel brackets break, call ENSONIQ for a new wheel cover that has the posts reinforced.

Keyboard: Early units may have buttons sticking or keys clacking. To make sure that buttons don’t stick on later units, a M4xlOmm hex head set screw was added to the extrusion rail that the keypad/display board mounts to locate the keypad/display board properly. Don’t remove this set screw.

Rack: On Rack units, use a drop of Loctite on screws that hold the circuit boards in place if nylock screws are not used. Nylock screws have a patch of nylon on the threads for greater holding power.

Rack: On ASR Racks with serial numbers between 10000 and 10500, the rack ear screw PEMs (screw mounting standoffs) may fall inside the unit.

W ASR Case (Avoid Stripping Screws)

Be careful when assembling or disassembling

any part of the ASR. Avoid over-tightening screws when

repairing a unit! Use no more than 8 incMbs of torque when tightening any screw. The ASR case is made of aluminum extrusions and steel. Some parts are held in place by screws that tighten into aluminum mounting rails that are part of the case. When replacing any of these screws, it is possible to over-tighten the screws and strip out a hole.

W High-Retention Force Connectors (Repair Technicians Label)

Inside the ASR is warning/information label just for you. We wanted to let you know that we use high retention force connectors in the ASR. This means it is very difficult to remove a connector by just pulling.

We recommend the use of a scribe, screwdriver or similar object when disconnecting cables. Watch out for them, and please don’t pull on the wires!

We have found that some units develop further problems once a module has been changed. This may be a result of improper handling of cables. We suggest removing all cable connectors using the angled end of a scribe (see Figure 5).

Figure 5 - Correct tool for removing cables l l

Scribes can be found in the following catalogs:

Techni-Tool catalog part number 400PR144.

Newark catalog part number 76- 15 10.

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Important

GF OEX-6sr CONNECTOR ON ASR KEYBOARD AND ASR-88 CAUTION!!! IMPORTANT!!!

ASR. The 8-pin mini-DIN connector on the rear panel of the ASR should only be used to connect the

OEX-6sr Output Expander to the unit. This connector does not simply supply audio outputs and signal ground and, therefore, cannot be used to generate separate outputs without the OEX-6sr. The ASR generates digital signals that must be converted externally. The signals present on this connector include digital control signals and +/- 15VDC. Improper connections to these signals could easily damage the

ASR or any external device connected.

HOW THE ASR WORKS

W This section should help you understand what each module in the ASR does. Reading this may help you decide what module is faulty by just knowing the ASR system better.

The ASR- 10 is a powerful self-contained computer system. It offers users the ability to accomplish many tasks, some of these are: l l

Sampling audio information from external sources

Resampling its own audio output l l l l

Adding digital effects to samples

Sequencing

Digital audio track recording

Disk storage and retrieval

The ability to accomplish these tasks makes the ASR-10 a complex system.

Figure 6 shows the ASR-10’s main components as a complete system.

9. KEYPAD/DISPLAY

BOARD

I

I

6. KEYBOARD

(KPC BOARD ON RACK)

I

--------s-s

,,-----a

I

I

I

Figure 6 - ASR Block Diagram

WHEEL ASSEMBLY m ONLY)

13. PATCH SELECT

BmON BOARD

(KFfBOARO ONLY)


7

Important

The block diagram also represents the modular design of the ASR-10. Each one of the main components represented in the diagram can be replaced, if necessary, without disturbing the other components in the system. Looking at the diagram you see:

Data storage and retrieval device.

1. Disk Drive

2. Power Supply Board

3. Digital Jack Board

Converts AC voltages to regulated DC and unregulated AC and DC to be distributed throughout the system.

Connections to facilitate the use of the optional digital I/O board. MIDI jacks, CV pedal jack, and footswitch jacks

4. Digital I/O Board

5. Digital Board

Optional board that enables the ASR-10 to use digital audio data directly from a digital source, such as DAT. It also allows the ASR-10 to output digital audio data directly to a digital recorder, such as DAT.

The engine of the ASR-10. It has the microprocessor, the sound processor, operating system memory, sound memory, effects processor, and floppy disk controller. It also has the circuitry to control all inputs to and outputs from the system.

6. Keyboard (KPC Board on Rack) Sends performance information (note on, note off, pressure) to the ASR-

10 digital board. Also handles communications to and from the keypad/display board.

7. Analog Jack Board

8. Analog Board

Has the input pre-amp circuitry on it, all of the audio inputs and outputs

(except for OEX-6).

Converts analog audio signals into digital audio signals and passes them to the digital board. Converts digital audio signals to analog audio signals and supplies them to the audio outputs and headphone amplifier

9. Keypad/Display Board

10. SCSI Board ll.OEX6sr Board

Transmits button presses to the digital board through the keyboard, and receives display data from the digital board through the keyboard. See figure 7 for further details.

Allows access to SCSI devices for storage and retrieval of data, and disk track digital recording. It is an optional board on the ASR- 10 keyboard.

Optional board on the ASR-10 keyboard. Adds three additional stereo D to A converters for six additional analog outputs.

.12. Pitch and Mod. Wheel

Assembly Transmits pitch and modulation wheel movements to the digital board. It is not included on the ASR-10 rackmount.

8


ImDortant

13. Patch Select Button Board Transmits patch select button presses to the digital board. It is not included on the ASR-10 rackmount.

The ASR-10 was designed with the analog and digital sections on different boards, and the analog and digital jack boards separate, for some specific reasons.

l l l

Only the digital board requires a four-layer circuit board so there is a cost savings using a two-layer board for the analog section.

It is easier to break the connections between the analog board and the digital board to install the optional optically isolated SCSI board. This ensures that no matter how much digital noise is induced on the digital board due to SCSI, it won’t reach the analog section.

Having separate jack boards allows the interface points with the outside world to be placed away from circuitry that can be damaged by Electra Static Discharge that can be introduced at these points. This decreases the instruments susceptibility to damage from ESD.

Keyboard and Rack Similarities

The Keyboard and the Rack use the same operating system (OS.) disk. The ASR-88 uses different EPROMs.

All circuit boards except the keypad/display board are the same for both the keyboard and the rack. However, there are physical differences that will require you to specify for which unit you are ordering parts.

Instead of a Poly-Key keyboard assembly, the Rack has a KPC simulator board. The KPC simulator board passes information between the keypad/display board and the digital board (like the keyboard does for the keyboard unit). In the rest of this manual, whenever you see “keyboard,” substitute KPC simulator for the

Rack and keyboard adapter board for the ASR-88 (except where otherwise noted). The ASR Rack has the

OEX-6sr Output Expander and SCSI Interface (SP-3) built-in. These two expanders are options for the

Keyboard unit. Digital I/O is an option for all ASR models. The ASR-88 has 16Meg of RAM standard, and

SCSI. The ASR-88 has a keyboard adapter board instead of a KPC board.

Communications Path

It is important that you completely understand the communications path

of the ASR. Please read this carefully.

The ASR digital board, keypad/display board and keyboard are complete computer systems in themselves, each with its own microprocessor and operating software. The modules communicate with each other using serial communication ports. Whenever a key is played on the keyboard, for example, the keyboard assembly microprocessor transmits this information to the microprocessor on the digital board.

The keypad/display board communicates with the digital board through the keyboard. Whenever the digital board wants to put a message on the display, it sends the message to the keyboard which then passes it on to the display. Whenever a button is pressed on the control panel, the keypad/display board’sends the message to the keyboard which, in turn, passes it on to the digital board.

The communications path is shown in Figure 7. The digital board communicates with the keyboard over a two-line asynchronous interface carried by the 20-pin keyboard ribbon cable. The keyboard communicates with the keypad/display board over a three-line synchronous interface that is carried over to the digital board via the 20-pin ribbon cable, then up to the keypad/display board via the 24-pin ribbon cable.

ASR Service Manual 9

Imoortant

Due to the complexity of the modules involved, it is often difficult to determine which module is at fault when a communications problem occurs.

1

KEYPAD/DISPLAY BOARD

DIGITAL BOARD

I

/

DATA DATA

IN OUT

DATA DATA CLOCK

IN OUT OUT

I 24 PIN DISPLAY

CABLE

10

DATA DATA CLOCK

I ASYNCHRONOUS

P O R T

Figure 7 - Communications Path

If a communication problem occurs (i.e., no display or no response to button presses or keys), it could be something as simple as a bad cable, or it could be a problem in one of the modules. To help you identify a faulty module, a Communication Test Board is available from ENSONIQ Customer Service*. The

Communication Test Board simulates the operation of the keyboard and can be used as a “known good” module in place of the keyboard for troubleshooting.

*This is the same communications test board that was sent out to service centers in 1990 to troubleshoot polypressure keyboard problems.

IMPORTANT!

When using the Communication Test Board, keep in mind that it is sensitive to static discharge. Handle the board by the edges and store it in the anti-static shipping bag when not in use. Do not let the board short out when testing, place an insulator (cardboard, paper, etc.) underneath it,

Attaching the Communications Test Board

If an ASR has a communications problem, turn the unit off and unplug the 20-pin keyboard ribbon cable from the digital board at connector J7. Plug the 20-pin ribbon cable from the Communication Test Board into 57.

This will eliminate the keyboard as a variable. Turn the system on. If the communications problem persists, you know the keyboard is not at fault. If communication is restarted, however, the keyboard is at fault.

There is one further complication. Since the communications path between the keyboard and keypad/display board is routed through the digital board, there is a remote possibility that the printed circuit connections

- -

__

--


Important between the two connectors are defective. If you have an ASR that has a problem communicating with its keypad/display board, you may want to verify continuity between the connectors on the digital board.

Turn off the power and unplug the 20-pin ribbon cable from the ASR digital board at J7 and the ASR 24-pin display cable from the digital board at Jl. Using an ohmmeter, verify continuity between the following points on the digital board:

57 (20~Din connector)

Pin 1

Pin3

Pin 5

J 1 (24-Din connector) to Pin 9 to Pin 10 to Pin 11

TROUBLESHOOTING

Often the faulty module in an ASR can be determined through normal use. Sometimes, it is difficult to isolate the problem. The following flowcharts can help you diagnose units that appear dead (no display).

When troubleshooting an ASR, always disconnect any expansion devices that may be present (such as the

SCSI Interface or OEX-6sr Output Expander). This will prevent a faulty expander from complicating your troubleshooting. Remember, when you take out the SCSI board, connect the analog board to the digital board via a 34 pin ribbon cable to J6 on the digital board and Jl on the analog board.

1 5

1 6

1 7

1 8

1 9

20

1 2

1 3

1 4

The following pages include troubleshooting information:

Pao,e Problem

AC Line Voltages

Power Supply Voltage Check Points

ASR with Incorrect Analog Power Supply Voltages (flow chart)

ASR with Incorrect Digital Power Supply Voltages (flow chart)

Display Self-test Chart

ASR with No LEDs Lit (flow chart)

ASR with All LEDs Lit, No Display (flow chart)

ASR Foot Switch and Patch Select Inputs

ASR-88 Keyboard


Checking the Power Supply

CHECKING THE POWER SUPPLY

Some ASR-10 problems may be related to a faulty power supply, transformer or line filter. You should check these before troubleshooting the rest of the unit.

Measure continuity across all the fuses to make sure they are not blown.

Make sure that all the cable connections are secure and correct. Plug the ASR-10 in and turn it on.

After it has warmed up for five minutes, begin to test the voltages at the points shown in Figures 8 and 9.

It is normal for Line Voltage to vary +/- 10%. If the voltages vary outside the allowable limits, follow the procedure described under TESTING THE POWER SUPPLY UNLOADED (pp. 14-15) before replacing it.

The voltage and part number of the chassis mount transformer are on the label on the top of the transformer. The power supply part number is silk-screened near the center of the power supply PC board. The chassis mount transformer part numbers for the ASR-10 are:

1OOV 1450000722 230V 1450000352

12OV 1450000342 240V 1450000932

These lugs are on the power supply board.

v

F i l t e r 1 Power Switch

Rear of ASR-10 Keyboard Unit

I green wire

Tground to case)

NOTE: Wiring is the same for the ASR-10 Rack

TR=top right lug

BR=bottom right lug

TL=top left lug

BL=bottom left lug

Analog Board Regulator Voltages

There are seven regulators (VRl through VR7) attached to the analog board heat sink. On the keyboard version, you can easily check to make sure that they are generatin,(J the correct voltages. The correct voltages are silkscreened onto the analog board next to the regulator name. Place your ground (-) probe on the tab of VR5. To measure the output, place the other probe on pin 3 of the regulator (when the regulator legs are closest to you, pin 3 is the right leg). It is normal for the voltage to vary f 5%.

12


Checking The Power Supply

POWER SUPPLY VOLTAGE CHECK POINTS

Below are the voltage ranges for proper operation of each fully loaded supply and the pins to read across with the voltmeter (see Figure 9). It is normal for line voltage to vary +/- 10%.

Designation

Digital Supply

Analog Supply

Where Used digital

XXil0g

Display Filament display

Display Offset

+5D 1

+5D2

+VD display digital digital

Connector Pins Allowable range Units

+,-

54 193 18.7 to 22.8

VACrms

54 496 17.1 to 20.9

VACrms

54 799 5.1 to 6.2

VACrms

54 92 -25.0 to -30.6

V D C

52

172 i4.75 to +5.25

V D C

J2 3-4 +4.75 to +5.25

V D C display/digital/kbd J 1 12

+10.9 to +12.1

V D C

+VAl

LUlal0g

53 193 +24.4 to +29.8

V D C

+VA2 aIMlog

53 2,3 +9.5 to +11.6

V D C

-VA1

Wtl0g

53 534 -27.6 to -33.8

V D C

- V A 2

TilldOg

53 694 -10.9 to -12.1

V D C

J2 was marked Xl on some early versions of the power supply board. These voltages can also be measured on the digital board (near the J2-power connector) with the ground (-) probe on the digital board heat sink: +5D 1 at FB3; +5D2 at FB2; and +VD at FB 1.

On keyboard units, the 53 power supply voltages may be measured at 53 of the analog board.

li%”

El

22OL240

0

120 t F6 1

Gil

T5 orange

T6 white

T8 blue

‘I7 red

Tl and T2 are green transformer wires

:l and F2

:3 and F4

29

., and F7

UL rated fuses

(lOOV, 12OV,24OV)

1.6A fast blow

4.OA fast blow

1.6A fast blow l.OA slow blow

2.OA fast blow


Figure 9 -

ASR- 10 Power Supply Board

Fuse Ratings (as of October 1995)

IEC 127 rated fuses

(230V units only)

Tl .OA slow blow

F4.OA fast blow

F 1.6A fast blow

Tl.OA slow blow

F2.OA fast blow

Where Used

Analog

+VD:DigitaL/Display/bdfSCWDI-10

Display

Analog

Line Fuse

13

Checking the Power Supply

TESTING THE POWER SUPPLY UNLOADED

If the power supply readings exceed the indicated tolerance it is possible that a defective component one of the other boards is drawing the power supply down. In this case, you should test the power supply unloaded before proceeding. This involves unplugging circuit boards from the power supply one at a time to see what board might be causing the incorrect readings. The procedure for doing this is shown in the flow charts, figures 8 and 9.

/ Incorrect analog power

\

INCORRECT ANALOG POWER

SUPPLY VOLTAGES

(Analog Supply, Display Fiient,

+VAl, +VAZ, -VA& -VA2)

14

Turn the unit OFF. Disconnect the

Analog Jack board cable from J4 on the dieital board. Turn the unit ON.

N O

Replace the Analog Jack

Board (see Section G).

Figure 10 -

Incorrect Analog Power

Supply Voltages


Checking The Power Supply

Incomct digital power supply voltags

TumtheunitOFF Checkthefuscs.

Vetifythetbe pmpcr Line Voltage is present Turn the unit ON.

INCORRECT DIGITAL

POWER SUPPLY VOLTAGES

(Digital Supply +5Dl, +5D2, +VD)

NO+=)

Simulator cable from J7 of tbe digital board. Turn the unit

Simulator (see Section E).

Turn tbc unit Off. Disconnect tbc Cpin Disk Drive power cable From tbc keypad/display board. Turn dx unit ON.

l

I

T-0+(

Replace the Disk Drive

(see section IQ.

Turn tbz unit Off. Disconnect the ‘I-pin cable between the power supply and the KcypxVDisplay Board. Turn the unit ON.

Turn the unit OFF. If present. disc-t tbc Digital I/O cable fmm 19 on he didtal board. Turn the unit ON.

I

Turn the unit OFF. If prescn~ disc-t tbc SCSI cables fmm J4 and 16 on the digital board. TUTI the unit ON.

YES v

Turn bc unit Off. Disconnect the pwa supply cable fmm I2 on the digital board. Turn the unit ON.

Replace tbe Power Supply Board (WC Section C).


Figure ll-

Incorrect Digital Power

Supply Voltages

I.5

Checking the Display

DISPLAY SELF-TEST MODE

When the keypad/display is receiving power from the power supply but is not in proper communication with the digital board, the keypad/display board enters self-test mode. In self-test mode, the display remains blank until you press the buttons on the control panel. Pressing various control panel buttons will cause the display to print characters, home the cursor, etc.*

Using Self-test Mode to Diagnose the Keypad/Display Board

1. If the unit comes in with a blank display, but is in self-test mode (i.e., the display prints characters when buttons are pressed according to the chart below) this indicates the problem is either the digital board or the communication link between the digital board, keyboard and the keypad/display board. Before replacing anything, check all connections, particularly the 20-pin cable to the keyboard.

If pressing buttons causes only the leftmost character of the display to change, this usually indicates a defective cable connection (20-pin ribbon cable) between the digital board and keyboard or possibly a bad keyboard.

2. If the unit is in self-test mode but the display does not respond according to the chart below, the problem is most likely in the keypad/display board. If certain buttons do not function properly during normal ASR-10 operation, test them while the display is in self-test mode.

If you can’t isolate a problem that seems related to the display, the display can be forced into Self-test mode using the following procedure. With the power off, face the front of the unit, then jumper the minus (-) side of C83 (located below J5, the digital jack board connector) to pin 1 of U64 (74F74, next to JS). On power up, the display will stay in self-test as long as the jumper is connected, allowing you to check the keypad/display board independently. The chart below details how the control panel buttons are mapped in self-test mode:

Displav Reads:

4.

Press:

LOAD

COMMAND

EDIT

INSTRUMENT

SEQ*SONG

SYSTEM~MIDI

EFFECTS l/ENV 1

2lENV 2

3fENV 3

4/PlTCH

S/FILTER

6lAMP

7fLFO

8fWAVE g/LAYER

O/TRACK up Arrow

16

3

I

9

+

0

1

6

7

<

=

$

1.

8

Displav Reads:

(Home Cursor)

*

(Home Cursor)

3.

Press:

Down Arrow

Left Arrow

Right Arrow

CANCEL*NO

ENTER*YES

Instrument-Track 1

Instrument*Track 2

Instrument*Track 3

Instrument*Track 4

Instrument*Track 5

Instrument*Track 6

Instrument*Track 7

Instrument*Track 8

EFFECT SELECT*BYPASS

SAMPLE

RECORD

STOP/CONTINUE

PLAY

;

;Home Cursor)

Space

&

;

(Home Cursor)

5 .

4

2.

>

0.

5

6.


TROUBLESHOOTING AN

ASR-10 WITH NO LEDS LIT

Checking the Display connections making

YES

NO

YES

I

Check

Kevboard/KPC

Are the disulav voltages correct? (53 on Dower suoolv)

NO

Test the Dower su~ulv unloaded. Go to Incorrect

Power Supolv Voltages

Fimre 12 -

No LEDs Lit

ASR Service Manual 17

Checking the Display

ALL LEDS LIT,

NO DISPLAY z voltages correct?

Y E S

*

Force the unit into self-test mode

Jumper the negative (left) side

Cl9 to Din 13 of U20.

TROUBLESHOOTING AN ASR-10

WITH ALL LEDS LIT, NO DISPLAY

1 8

Reulace the KevboardXPC imulator board (see Section

N O

Repair and retest.

Figure 13 -

All LEDs Lit, No Displav


Kevboard and Footswitch Inuuts

The ASR-10 Keyboard and the KPC Simulator Board

The Poly-Key-r~ Pressure Keyboard on the ASR-10 (and the KPC simulator board on the Rack) is a complex module that contains its own computer and software. So, when necessary, you will be swapping it out as a whole unit. Display information sent to and from the digital board is processed through the keyboard/KPC simulator. What might appear to be a frozen display, therefore, could be a bad keyboard/KPC simulator. For more troubleshooting hints, see Communications Path p. 10.

The 20-pin Ribbon Cable (Kevboard/K.PC

Simulator)

When reconnecting this cable to the digital board, make sure that the striped side is aligned with pin 1 and that the cable is not r&-pinned. If the cable & mis-pinned or installed backward, fuses F3 and F4 on the power supply board will blow. NOTE: If one fuse blows, the other will blow also; you must replace both.

ASR-10 Foot Switch and Patch Select Inputs

Foot Switch Jack

A single pedal foot switch (like the SW-5) plugged into the Ft. S

W

. jack is always a Sustain pedal.

When a dual foot switch (piano-type, like the SW-lo) is plugged into the Ft. S

W

. jack, the right pedal is always a Sustain pedal and the left pedal is programmable (OFF, FX MODSRC, SAMPL YES, or

STOP/CONT).

To check to see what the left foot switch is set to, press Edit, then press System*MIDI repeatedly until the display shows LEFT Ff SWITCH=OFF (default).

Although the foot switch jack is mounted on the digital jack board, the foot switch signals go to the keyboard, where they are sensed by the keyboard microprocessor.

Patch Select Jack

A single pedal foot switch (like the SW-5) plugged into the Patch Select jack causes the ASR-10 to think that the left patch select button is always down (X0). The single pedal acts as the right patch select button (XX).

When a dual foot switch (piano-type, like the SW-lo) is plugged into the patch select jack, the right acts as the right patch select button and the left pedal acts as the left patch select button.


ASR-88 Kevboard

ASR-88 KEYBOARD

The ASR-88 uses the same keyboard as the KT-88 that has “bubble” switches, the ASR-88 keyboard is only different in the adapter board. Instead of mechanical switches, this keyboard has a molded rubber bubble under each key. The keyboard circuit board has conductive carbon contacts printed on it (which appear as small black strips under each key). Each rubber bubble also has small conductive carbon dots printed on the inside. The bubbles are made in strips which attach to the circuit board using small nubs.

The nubs on a strip are pushed through holes in the circuit board, in order to hold the strip in place.

As a key is pressed, it forces the bubble down until the carbon dots on the bubble hit the carbon contacts on the circuit board. This completes the circuit. The circuit has two contacts per key, a back contact and a front contact. The back contact closes first when a key is pressed, then the front contact closes. We measure the amount of time between when the back contact closes and when the front contact closes.

This tells us how fast the key was hit, making the keyboard “velocity-sensitive”. In other words, we can tell how hard the musician is playing and can adjust the volume and brightness of the sound in response to the playing style. Each bubble switch also has a diode in series with it for proper circuit operation.

Key Response Problems

Although bubble switches are more reliable than mechanical switches, there are still many things that can go wrong with this keyboard. If the bubble switches don’t switch in the proper order (first the back contact, then the front contact) or if the switches don’t make clean contact, several problems can occur.

These include: l l l l

Keys that don’t sound at all

Erratic keys that “chatter” as they are played, held or released

Keys that sound much louder than other keys

Keys that sound much quieter that other keys l l l l l l l

These problems can be caused by several things, including:

Open or shorted traces on the circuit boards

Bad or dirty carbon contacts on the circuit boards

Bad or dirty carbon contacts on the bubbles l

Tom or otherwise damaged bubbles

Bubble strips that are installed backward

Interference between the key and the bubble (such as foreign material trapped between the key and the bubble)

Improper alignment between the key and the bubble

Bad diodes

Usually failures will fall into two categories; either one key is bad, or a group of keys is bad.

If a group of keys is bad, all the keys may be grouped together (usually a group of eight) or they may be spread across the keyboard (usually every eighth key).

If keys fail in a group of eight or every eighth key fails, the problem is most likely an open or shorted trace on the circuit board or a problem with the keyboard processor board (that is mounted to the bottom of the keyboard).

2 0


ASR-88 Keyboard

If only one key is bad (or if groups of keys are bad but not in groups of eight or every eighth key), the problem could be any of the above. The first thing to do is remove the key and see if there is anything obviously wrong with the bubble:

Look for damage to the bubble itself.

If the bubble is damaged, the circuit board must be removed so the strip can be replaced.

Check that the bubble strip is seated flat against the circuit board.

If the strip is improperly seated, use an appropriate tool (a straightened paper clip works well; don’t use a sharp tool as it can puncture the rubber strip) to force the nubs on the strip into the holes on the circuit board. The strip should lay flat against the circuit board.

Check that the bubble isn’t backward. If installed correctly, the deeper of the two bubble contacts should be at the rear of the keyboard.

If the strip is in backward, remove the circuit board, pull the strip off the circuit board, turn it around and reinstall it.

Remove any foreign material caught between the bubble and the key.

See if the plunger on the key makes proper contact with the top of the bubble.

If the piunger on the key forces the bubble down unevenly (with one side of the bubble being much higher than the other side), loosen the screws that hold the circuit board in place and slide the circuit board over slightly to better align the key and the bubble, then re-tighten the screws,

Check that both diodes for that key are inserted properly (the banded end of all diodes should face the same way).

If a diode is in backward, the circuit board must be removed and the diode must be unsoldered, reversed and re-soldered.

Check that both diodes for that key are working properly.

Select the “diode check” setting on an ohmmeter and test the diodes. The diode should conduct when the negative (black) lead of the ohmrneter is on the cathode (banded) end of the diode and the positive (red) lead of the ohmmeter is on the anode (unbanded) end of the diode. The diode should not conduct when the negative (black) lead of the ohmmeter is on the anode (unbanded) end of the diode and the positive (red) lead of the ohmmeter is on the cathode (banded) end of the diode. If a diode is bad, replace it with a lN914B diode.

l l l

If there is no obvious problem, remove the circuit board:

Examine the circuit board for short circuits.

These are usually caused by solder bridging. Touch up any shorts with a soldering iron and/or razor knife.

Look for open traces.

These usually occur at the break-away points along the edge of the board and near the connectors.

Solder a wire jumper in place to fix any broken connections.

Remove the bubble strip and clean both the circuit board contacts and the bubble contacts with alcohol and a cotton swab.

Allow them to air dry before putting the bubbles back on the circuit board.

If after all this the keyboard still doesn’t work properly, replace the entire keyboard assembly.


ASR-88 Keyboard

Pressure Response Problems

The ASR-88 keyboard, like the KT-88 and TS-12, has mono pressure response. This allows a modulation effect to increase as you press harder on a key. Pressing harder on any key will affect all other keys. To produce mono pressure, two pressure sensitive strips are inside the keyboard assembly.

Pressing on a key exerts a downward pressure on the strips. Two strips are used because of the large 88note span. The signals from the two strips are combined by the mono pressure circuit that resides on the keyboard processor board that is mounted to the bottom of the 88-note keyboard near the wheel assembly. Note that it is normal for pressure response to vary depending on the number of keys being pressed.

If pressure response is not working properly, check the alignment of the pressure strips, and make sure they are securely connected to the keyboard adapter board. Replacement of the pressure strips is not practical on this keyboard assembly, if there is damage to the pressure strips, replace the entire keyboard assembly.

22


Error Messages

ERROR MESSAGES

Occasional error messages are not unusual, and unless they become chronic, they are not a cause for concern. It is important to realize that these messages are diagnostics and do not necessarily indicate a problem. These messages were designed to help our software engineers in the development of the software, not as hardware diagnostics.

Software Messages

The following error messages could be caused by software:

IDnU Descrintion ID# Desctiution

0 1 3 software error in voice assignments 1 3 2 chk instruction register out of bounds

0 1 6 poly or mono pressure events sent to VC

020 unknown button event

1 3 3 trapv instruction ovefflow error

134 privilege violation

135 trace 048 parameter error

049 layer error

0 8 0 bad buffer to MIDI

128 bus error

129 odd address error

130 divide by zero

137 line 1111 emulator

138 spurious interrupt

139 unused vector

1 9 2 load all data error (from MIDI or card)

193 keyup playback error

13 1 llegal instruction 1 9 4 out of SDBs error

Digital Board Problems

The following error messages could be caused by a problem on the digital board:

0 0 5 could not synchronize audio input 033 bad ESP chip

0 0 6 could not synchronize audio input 034 bad ESPFWM

019 Bad OTTO interrupt 040* bad ESP error

032 bad download 1 4 5 unknown DUART interrupt error

Analog or Digital Board Problem (clock comes from analog board, make sure there are no analog fuses blown and that the analog power supplies are O.K.)

0 0 9 No LRCLK input to 68302

MIDI or Main Board Problems

The following error is usually caused by too much incoming MIDI data. It also could be caused by a problem with the keyboard.

1 4 4 out of buffers

Disk File Operation Errors

The following error messages could be caused by software:

ID# DescriDtion ID#

0 7 00 illegal block # during read/write

01 Missing End of File marker

02 Premature End of File marker

03 file linked list points to unused block

08

1 0

1 5

Descrintion current DIR & FAT info in buffer is not valid not enough space to save file file size > free blocks on device no free blocks found on the diskette

04 file linked list points to bad block 1 6 illegal fat block # load was attempted


Error MessaPes

05 current info in DIR buffer is not valid data 17 file size greater than limit = 33 Mbytes

06 current info in FAT buffer is not valid data 32-35 and 40*-44 NEC PD 72069 errors

*Please note that error 40 error 040 are separate errors. Error 40 is always a disk controller or disk drive related problem. Error 040 is always an ESP problem.

In the case of error 040 the problem will always be an ESP problem, in the case of error 40 the problem can be the disk drive controller (located on the digital board) or a disk drive problem. Replace the disk drive with a known good drive first. If the error still persists, than replace the digital board.

The following errors could be caused by a bad disk or disk drive:

09

1 1

12 block write attempt failed device id pcb load/save error operating system pcb load/save error

13 directory save verify error

14 fat save verify error

22 possible disk drive index pulse problem

The following errors could be caused a bad external SCSI cable or a SCSI termination problem:

18 scsi command not complete/no disconnect ret

20 scsi last command ignored

2 1 scsi check condition error

The following special message is not an error message: Not an EPS device. See the SCSI section of this manual for further explaination.

24 ASR Service Manual

Sofhyare Notes

ASR-1 O/88 SOFIWARE NOTES

The O.S. version on the disk can be easily updated (call ENSONIQ Customer Service for the latest O.S.

version). You cannot copy the O.S. to a disk onto which you have already saved instruments or sequences, but not the O.S. Attempts to do so will result in an error message.

To Check the ASR-10 Software Version: l

Press Command, then Env 1. The display shows NO COMMANDS ON PAGE.

l

Repeatedly press the left or right arrow button until the display shows SOFIWARE l l l

INFORMATION.

Press Enter-Yes. The display shows RAM VERSION = X.Xx.

Press EntereYes. The display shows ROM VERSION = Y.YY.

Press Enter-Yes. The display shows KEYBOARD VERSION ZZZ. For the Rack, this will always show 1.

Keyboard Software

In keyboard version 2.40 software, when you hold down up arrow button and press down arrow button, numbers would scroll instead of going to the halfway point. A new keyboard with keyboard software version 2.41 fixes this problem (released 16 March 93).

On March 16, 1993, Keyboard Software Version 2.41 went into production. Version 2.41 addresses problems that were inherent in version 2.40. The problems that were addressed are: l

Rapid button presses (e.g. direct dialing or holding inc/dec to center a parameter value) could cause any of the following symptoms:

1 ) Garbled display. For example: message not centered properly in the display, characters missing or repeating in a message. Subsequent messages are displayed properly.

2 ) Missed buttons. For example: holding down the up arrow button and pressing the down

arrow button to center a parameter could cause unit to miss a button-up, which would make the parameter value scroll to the extreme high or low end of its range. Subsequent button presses are handled properly.

3) Display/Button lock-up in extreme cases. Power off/on corrects problem.

ASR-10 ROM/DISK Compatibility Issues

The following chart summarizes the Operating System compatibility of the ASR-10 Keyboard and

Rack. The Rack was released with 1SOB EPROMs and must have at least version 1.50 disk.

* From version 2.00 on, the OS uses more space in RAM than previous versions.This is due to the Disk Tracks feature.

Version 3.50 ROMS are for the ASR-88 only.

Figure 14 - ROM and disk Compatibility


25

So&are Notes

Special note on making copies of the Operating System (O.S.) disk:

The code that loads the O.S. from disk at bootup is stored in the ROMs.

1 .OO ROMs made some assumptions about the location and format of the O.S. on the disk. For that reason, there are some limitations that we must impose when using the COPY OS TO DISK command to copy an O.S.

from one disk to another. Generally, if the O.S. that you are copying is the same version that you are

running with, you will have no problems. Where things get tricky is when you are copying an O.S.

that is different from what you are running with. Here are the rules:

O.S. That’s running:

1.00 thru 1.25

1.00 thru 1.25

1.50

1.50

1.60 and higher

O.S. to c0I.w: Results/Rules:

1.00 thru 1.25

O K

1.50 or higher DESTINATION DISK MUST BE EMPTY. Use a freshly formatted disk as the destination, otherwise system will report not enough space on disk.

1 .OO thru 1.25

DESTINATION DISK MUST BE EMPTY AND

DESTINATION DISK MUST BE SAME DENSITY

AS SOURCE DISK. Use a freshly formatted disk as the destination with same density as the source disk, otherwise command appears to work but the system was not copied correctly.

1.50 or higher O K

1.00 thru 1.25

DESTINATION DISK MUST BE SAME DENSITY

AS SOURCE DISK. Otherwise the system is not copied correctly. May get the message DISK

WRONG SIZE.

1.50 or higher O K 1.60 and higher

Note: Version compatibility is not an issue if using the COPY DISK command.

To update O.S. Version on a floppy disk: l

Insert the disk containing the O.S. you want to copy (the source disk) into the floppy drive.

l

Press Command, then SystemWIDI. l

Press the right arrow button until the display shows COPY OS TO DISK.

The OS. version on the disk can be easily updated (call ENSONIQ Customer Service for the latest O.S.

version). You cannot copy the O.S. to a disk onto which you have already saved instruments or sequences, but not the O.S. Attempts to do so will result in an error message.

To Check the ASR-10 Software Version: l l

Press Command, then Env 1. The display shows NO COMMANDS ON PAGE.

Repeatedly press the left or right arrow button until the display shows SOFTWARE l l

INFORMATION.

Press EnteraYes. The display shows RAM VERSION = XXX.

Press EntereYes. The display shows ROM VERSION = Y.YY.

26


-

-

-~

-

-

-

So&are Notes l

Press EnteraYes. The display shows KEYBOARD VERSION ZZZ. For the Rack, this will always show 1.

Version 1.25 disk (released 8 FEB 93)

For ASR-10 Keyboards ONLY.

This disk is only compatible with 1.00 ROMS. This is not u typical O.S. Release?

This OS. update is intended for customers who have a keyboard with 1.00 ROMs but do not need or want the SCSI kit. (When they buy

SCSI, they automatically get 1.50 ROMs if they don’t have them.) This release provides them with a method of upgrading their operating system without the expense of a ROM change. Because this was a patch to the existing 1.20 O.S. disk, there are some known problems that still exist in this release. The purpose of this release is to address the serious problems that can cause a crash or corrupt data. No new features are added.

SEQUENCER

Loading SINGLE sequences from disk corrupted parameters of sequence that was currently selected. The selected sequence inherited the following parameters from the sequence being loaded: loop switch, tempo, time signature, sequence length in bars. Symptoms that would show include: keeping new after track edit results in no data left on track or extra events on track, tempo mysteriously changing on sequence, bar counters looping prematurely or beyond the actual end of the sequence data. Auto-locate malfunctioning on specific sequence. This problem has been in existence since 1 .OO. It has been addressed in version 1.25.

QUANnZE track had a problem that caused track cleaner to erase the track.

Symptom will be that user quantizes, track auditions tine. but is erased on a keep new. Not extremely likely, but you will get some calls about this. The quantize problem has been around since the

EPS days, but the track cleaner (which was introduced in version 1.20) makes the problem much more visible. In version 1.05, an improperly quantized sequence may have played tine but subsequent track edits or overdubs could crash the system or destroy other sequence data. The quantize problem has been fixed in version 1.25, the track cleaner is still in place.

Attempting to change the length of a song track through the CHANGE SEQUENCE LENGTH command resulted in ERROR 129. This command is not available for song tracks. The only way to change the length of a song is to edit song steps. If user attempts to run the change sequence length command when a song is selected, version 1.25 now displays SELECT SEQUENCE FIRST message.

WAVESAMF’LE EDITS l

Performing a command like FADE IN on a Stereo sample with STEREO LAYER LINK ON caused the ASR to stop recognizing WS numbers when you play the keyboard. Inc/dec keys do not function properly for wavesample selection. This is a BIG problem introduced in version 1.20 that can happen when you do any stereo wavesample command that gives you an audition. Wavesamples may appear in both layers or may have “moved” from one layer to the companion layer. The only way to recover your instrument is to “rebuild” the instrument layer/wave maps by creating a new instrument and copying over the wavesamples to the new instrument, then deleting the old instrument. If you suspect this problem, here’s how you can check your stereo instruments for valid layer/wave maps:

1. With STEREO LAYER LINK ON, select the left layer, then select the wavesample field.

2. Use the up-arrow to scroll through all wavesamples. Verify all the wavesamples for that layer exist.

3. Repeat this on the same layer using the down-arrow. Any discrepancies indicate a bad layer map.

4. Select the right (companion) layer and repeat steps 2 and 3.

This problem has been addressed in version 1.25.

Also verify that no wavesample appears in both the left and right layer.

l

MISC

A low-level bug existed that could cause the system data to be corrupted. Due to the nature of this bug, the exact circumstances that would cause a problem and the symptoms that would show up are entirely unpredictable. This has been addressed in version 1.25.

KNOWN PROBLEMS J.N VERSION 1.25:

The following problems are known to exist in version 1.25. If a customer has 1.00 ROMs and is reporting any of the following problems, the 1.25 O.S. disk will NOT solve his problem. The only recourse is for the customer to upgrade to I .50 ROMs.

MERGE TRACK COMMAND incorrectly allows you to specify ranges. The ranges are ignored when the command executes and the merge is performed over the entire track.

exists in version 1.25.

Version 1.50 no longer allows ranges to be specified for this command, but this problem still

AUDIO GLITCHES (distortion, loss of stereo phase) that occur intermittently when all sequencer tracks are playing. It is NOT voice stealing or effects related. This is due to OTTO losing sync of the beginning of the sample. Low probability. NOT addressed in version

1.25.

TIME COMPRESS/EXPAND is still not 100% reliable. Some portions of samples may not compress or expand at all. Other sections may compress too much. Particularly noticeable with jam loops. It appears that experimenting with the quality value can correct the problem. (For example, a sample that would not compress at quality of 25 would compress at a quality of 26.) The algorithm is being reviewed. A change should be forthcoming that at least reduces the chances of failure. (Note that the audition gives you an accurate picture of what the compression/expansion has done, and keeping the old will leave the original wavesample intact.) Also note that time compression/expansion of stereo samples may result in loss of phase. (That’s the way it is.) Still a problem in version in 1.25 and 1.50.

Attempting to edit the KEY RANGE with the data slider for samples that have STEREO LAYER LINK=ON results in LAYER EDIT

NOT ALLOWED. Not addressed in version 1.25, use incfdec buttons or keyboard to set wavesample key ranges.

MACRO files will not load. Still a problem in version 1.25.

MACRO files will not save correctly. Saving a macro file to floppy disk results in display saying “SAVING ASR-10 OS.” This is a display anomaly only, the O.S. is not being overwritten. Still a problem in version 1.25.

A problem exists in the logic that waits for Enter or Cancel to be hit. A typical example would be some floppy disk commands (COPY

OS DONE. ANOTHER?). We found that if the user does nothing for 60-seconds, the system will timeout and the timeout logic could lockup the display. Still a problem in version 1.25.

ENTER PLAYS KEY feature does NOT exist in version 1.25.


27

Software Notes

Version 1.50 disk (released 28 JAN 93)

This release contains some minor improvements and fixes for problems that have been discovered since the version 1.20 disk. The unit must have version 1SOB O.S. ROMs to use this disk. This is the original release for the Rack.

NEW FEATURE l l l l

ENTER PLAYS KEY feature has been added to this release. The Enter button can be used to trigger sample playback. For more details, see the 1 SO Manual Addendum.

SEQUENCER

Loading SINGLE sequences from disk corrupted parameters of sequence that was currently selected. The selected sequence inherited the following parameters from the sequence being loaded: loop switch; tempo; time signature; sequence length in bars. Symptoms that would show include: keeping new after track edit results in no data left on track or extra events on track; tempo mysteriously changing on sequence; bar counters looping prematurely or beyond the actual end of the sequence data. Auto-locate malfunctioning on specific sequence. This problem has existed since 1.0.

QUANTIZE track had a problem that caused track cleaner to erase the track. Symptom will be that user quantizes, track auditions fine, but is erased on a keep new. Not extremely likely, but you will get some calls about this. The quantize problem has been around since the

EPS days, but the track cleaner (that was introduced in version 1.20) makes the problem much more visible. In version 1.05, an improperly quantized sequence may have played fine but subsequent track edits or overdubs could crash the system or destroy other sequence data. The quantize problem has been fixed in version 1.50. the track cleaner is still in place.

Attempting to change the length of a song track through the CHANGE SEQUENCE LENGTH command resulted in ERROR 129. This command is not available for song tracks. The only way to change the length of a song is to edit song steps.

If user attempts to run the l change sequence length command when a song is selected, version 1 SO n o w d i s p l a y s SELE(JT SEQUENCE FIRST message.

MERGE TRACK COMMAND incorrectly allowed you to specify ranges. The ranges are ignored when the command executes and the merge is performed over the entire track. Version 1.50 no longer allows ranges to be specified for this command.

AUDIO l l l

Audio glitches (distortion, loss of stereo phase) that occur intermittently when all sequencer tracks are playing. It is NOT voice stealing or

I I

WAVESAMPLE EDITS

Attemotinz to edit the KEY RANGE with the data slider for samoles that have STEREO LAYER LINK=ON r e s u l t s i n L A Y E R E D I T

NOT ALLOWED. A d d r e s s e d i n v e r s i o n 1 . 5 0 .

Performing a command like FADE IN on a Stereo sample with STEREO LAYER LINK ON caused the ASR to stop recognizing WS numbers when you play the keyboard. Inc/dec keys do not function properly for wavesample selection. This is a BIG problem introduced in version 1.20 that can happen when you do any stereo wavesample command that gives you an audition. Wavesamples may appear in both layers or may have “moved” from one layer to the companion layer. The only way to recover your instrument is to “rebuild” the instrument layer/wave maps by creating a new instrument and copying over the wavesamples to the new instrument, then deleting the old instrument. If you suspect this problem, here’s how you can check your stereo instruments for valid layer/wave maps:

1. With STEREO LAYER LINK ON, select the left layer, then select the wavesample field.

l

2. Use the up arrow to scroll through all wavesamples. Verify all the wavesamples for that layer exist.

3. Repeat this on the same layer using the down-arrow. Any discrepancies indicate a bad layer map.

4. Select the right (companion) layer and repeat steps 2 and 3. Also verify that no wavesample appears in both the left and right layer.

MACRO FILES l

Macros would not load correctly. This has been fixed in version 1.50.

Saving a macro tile did not work. Trying to save a macro file to floppy disk resulted in display saying SAVING ASR-10 OS. Macro files l save correctly in version 1.50.

MIX

A problem was found with the logic that waits for Enter or Cancel to be hit. A typical example would be some floppy disk commands

(COPY OS DONE. ANOTHER?). We found that if the user does nothing for 60-seconds, the system will timeout and the timeout logic could crash the machine. In version 1.50, the message is simply redisplayed after 60 seconds.

KNOWN PROBLEMS/OMISSIONS IN 1.50

. The following commands are currently disabled i n v e r s i o n 1 SO: COPY SCSI DEVICE and SCSI BACKUP RESTORE.

l

TIME COMPRESS/EXPAND is still not 100% reliable. Some portions of samples may not compress or expand at all. O t h e r s e c t i o n s may compress too much. Particularly noticeable with jam loops. It appears that experimenting with the quality value can correct the problem. (For example, a sample that would not compress at quality of 25 would compress at a quality of 26.) The algorithm is being reviewed. A change should be forthcoming that at least reduces the chances of failure. (Note that the audition gives you an accurate picture of what the compression/expansion has done, and keeping the old will leave the original wavesample intact.) Also note that time compression/expansion of stereo samples may result in loss of phase.

Version 1.60 disk (released 25 FEB 93)

This release contains some minor improvements and fixes for problems that have been discovered since the version

1.50 disk. The unit must have version 1SOB O.S. ROMs to use this disk. The following l l problems have been addressed in version 1.60.

STORAGE / SYSTEM

COPY SCSI DEVICE and SCSI BACKUP/RESTORE commands have been enabled,

COPY OS command would not work when trying to copy an operating system that was compatible with I.00 ROMS (1.00 thru 1.25). In version 1.60, these older versions can be copied provided the following rules are met (othenvise an error message is displayed):

A.source and destination disk must be the same density, and

28

ASR Service kfanuul

Software Notes l

B. the destination disk does not already contain an operating system later than version 1.25 (i.e. 1 SO or 1.60).

We still recommend using the COPY DISK command if users want to copy an Operating System that is different from the one that is currently running.

LOAD BANK or LOAD SONG file had a problem that could cause the machine to lock up or crash when loading songs into the ASR-10 l if those songs or banks were originally created and saved on an EPS or EPS 16 PLUS. This problem has been fixed in 1.60.

SEQUENCER

Loading SINGLE sequences from disk still had a problem where parameters of the currently selected sequence or the sequence being loaded could become corrupted. This was a timing problem that made it intermittent, depending on how busy the system was at the time l the load completed. Symptoms that would show include: keeping new after track edit results in no data left on track or extra events on track, tempo mysteriously changing on sequence, bar counters looping prematurely or beyond the actual end of the sequence data. This problem has been addressed in 1.60.

WAVESAMPLE COMMANDS

In version 1.60, a modification was made to TIME COMPRESS/EXPAND so that it is much more likely to find a valid splice point. This will reduce the chance of a failure. Again, the audition does give you an accurate account of what the command has done. Let your ears be the judge. Also note that time compression/expansion of stereo samples may result in loss of phase. This is due to differences in the left/right data streams and is not a problem with the algorithm.

Version 1.61 disk (released 16 APR 93)

The unit must have version 1SOB O.S. ROMs to use this disk. The following problem was discovered in O.S. Version 1.60 and has been addressed in Version 1.6 1: l

STORAGE/SYSTEM

The COPY FLOPPY DISK command can potentially erase all data on a SCSI hard drive. The conditions for this to occur are as follows:

> ASR-10 with SCSI interface.

> Hard drive connected with SCSI ID number of 0.

> Destination floppy for the COPY FLOPPY DISK command is not formatted or is a different format or capacity than the source floppy.

> Hitting ENTER to the ERASE AND FORMAT DISK? prompt.

Workaround for O.S. Ver 1.60:

With so much to lose, it is best to avoid the COPY FLOPPY DISK command when a SCSI device is connected whose ID number is 0. For those that are careful:

> Ensure that the destination floppy is formatted and is the same density as the source floppy. If unsure of the format of the source floppy, proceed with caution.

> If the command prompts you with the ERASE AND FORMAT DISK message, hit CANCEL. disconnect all SCSI devices, then retry the command.

Version 1.61 fixes this problem. It is the only problem addressed by this release. No new features are added.

Version 2.5 1 disk:

ENTER PLAYS KEY:

The Edit/System Midi, ENTER PLAYS KEY parameter incorrectly defaulted to C4+ after power-on, with no Instruments loaded. The value was skewed by a semitone and the range incorrectly went from AO+ to C8+. The parameter now correctly defaults to C4 and the range has been corrected to from A0 to C8.

Error 129 on Undefined ASMPLNAME:

Hitting the down arrow button would cause a system error 129 when on the ASMPLNAME parameter and the parameter showed ASMPLNAME=UNDEFINED. This problem has been fixed.

COPY PITCH TABLE:

The COPY PITCH TABLE Command did not permit you to make additional pitch tables. Instead, the command overwrote the current pitch table with a copy of itself, but with the name PITCH TABLE 3. This problem, which was introduced in

Version 2.01, has been fixed.

Invalid Sequencer Locate (GOTO) Requests

With Audio Track Data recorded, the first time you selected the Edit Seq Song, Bar or Beat value, and pressed Enter Yes twice (to goto the last locate point -- but you have never used goto before, so this last locate point should default to 01.01). the unit hung on . . ..Locating.... This problem has been fixed.

With Seq Track data (no Audio Tracks) recorded, the first time you selected the Edit Seq Song, Bar or Beat value, and pressed Enter Yes twice (to goto the last located point -- but you have never used goto before, so this last locate point should


29

So*are Notes default to 01 .Ol), the unit located to an invalid location (Bar 384.04). Pressing continue caused the Bar count to run on to

999. This problem has been fixed.

Potential delay before entering SAMPLING or CREATE NEW INSTRUMENT:

If the ASR has to SHUFFLE memory before entering Sarnplin g, no message was being displayed. The ASR remained frozen on a display while memory was being shuffled, though it did collect button presses. Until the shuffling completed, the unit appeared to be locked up. (Though it would recover and post-process the button presses). A shuffling data message has been added and the system is placed into an orderly shutdown while the shuffling takes place. This addressed a similar problem which occur if you ran CREATE NEW INSTRUMENT and shuffling had to occur.

Version 2.07 disk

STORAGE/DOS/SCSI

When saving an instrument or song fde to multiple disks, if you changed the floppy disk when prompted for “USE

MULTIPLE DISKS?” the wrong directory information would be used. (The ASR was not aware that the disk change occurred). The result is that you have saved an invalid directory to the floppy disk that you just inserted.Most common result is a “FILE OPERATION ERROR” on writes or reads to this disks, which must be reformatted. Fixed.

Loading first file after a floppy disk change may use old FATS cached from previous disk.

This could result in the loaded song name showing up as *UNDEFINED* or as instruments disappearing as soon as they are loaded. Depending on what was already in memory, a crash may occur. Fixed.

Backup/Restore would hang if it had to create a sub-directory on the destination backup device. The backup could never be completed. Usually occurs when doing a backup/restore to a SCSI device (not to floppies). Display hangs with

‘CREATING NEW DIRECTORY” message. Fixed.

Magneto Optical / Write Protect: A problem was found with magneto optical drives. Attempting to access the drive (even for read operations) resulted in a “DISK WRITE PROTECTED” error message. Fixed.

Texel CD ROM drive start up problem: On power-up, the Texel CD ROM drive is not recognized properly. (Specific to the nature that this drive wakes up). Normally, this is not a problem. However, attempting to do direct-dial macros with this drive after power-up may lead to a system error. After rebooting (without a power-up) the drive worked as expected. Fixed.

MEMORY ALLOCATION / MANAGEMENT

A problem was found with low-level memory management. This problem would most likely manifest itself in units

expanded to 10 Meg or more. Symptoms are:

Lockup when attempting to save song and all seqs. Display would show “Shuffling Data”.

Machine would never come out of this state. More likely to occur when you had over 8 Meg of AudioSamples recorded or an instrument that was larger that 8

Meg. Fixed.

A problem was found in the RAM Track amalgamation logic where Audio Sample memory which was recorded over

would sometimes not to be returned to the system. Typically, any other Audio Sample editing (Delete Audio Sample,

Erase Audio Track, or additional RAM track recording) would cause this memory to be released again. However, if someone had overdubbed until they ran out of memory, then kept new, the system would be in a state where there would not be enough memory to do any more RAM track recording, even though the original AudioSample data was deleted. (Further attempts to record would result in “NO ROOM FOR OPERATION”). Fixed.

You can create a situation that will lock the ASR in EDITING after KEEP NEW to an audio track that has been

punched-in on. This was a memory management problem particular to units with 10M or more memory. Fixed.

SAMPLING / RAM TRACK RECORDING AND PLAYBACK

The first time that you enter sampling with REC SRC=DIGITAL, the system incorrectly allows you access to 119 MS

to Sampling Pre-Trigger time, instead of the 39 MS that it should Initialization problem, worked correctly on subsequent sampling attempts. Fixed.

Exiting from Sampling in Stereo incorrectly turns off the Flashing Selected Audio Track yellow LED. This can leave you in a mode in which both Audio Tracks are selected (ready for stereo recording), but only one yellow LED is lit. Fixed.

Drift between RAMTRACKS and Sequencer Tracks or sequencer slowing down when sampling main out at 30K.

This is a statistical problem that is specific to the main board. The problem is board-specific but has been addressed by software, requiring a reduction in the pre-trigger time at 30K sample rate. The maximum pre-trigger time at 30K has been reduced from 119ms to 93ms.

30

ASR Service A4anual

Soflware Notes

Sample playback “skipping” occurs when playing back RAMTRACK audiosamples or regular wavesamples which

are greater than 2M samples at 3OKHz. This problem can occur on any unit which has SM or 10M or ram. All other memory configurations work fine. The skipping usually starts at 43 seconds into the sample. The result is that the system will play random chunks of its sound ram (including the Operating System space which sounds like bursts of noise). Fixed.

GENERAL / SYSTEM

ASR could have intermittent problems during song record or playback if the display is on the sequencer locate page.

This was a low-level error related to the display updating the current position in the song (error did not occur unless you were on the locate page). This was a nasty problem that could be responsible for random crashes that occur during or after sequence record or playback. For example, the “Gift of Gab” demo always crashed with an error 129 or 135. Any song file could exhibit a problem. It all depends on the content of the song file. Fixed.

ENHANCEMENT ADDED:

The saving of SONG AND ALL SEQS is faster. Intelligence has been added to the SAVE SONG AND ALL SEQS command to optimize the project file save time. Depending on the circumstances prior to the save, the time spent shuffling data should be reduced by as much as 40%.

ASR-10 Version 3.00 Release Notes

The ASR-10 Version 3.00 Operating System (DISK only) has been tested and is ready for release to production. All ASR-IO models (keyboard, rack, and keyboard with SCSI) will be getting this O.S. (p/n 8530000112) as a running change. The

EPROM update kit, which is included in the SP-3 and DI-10 service kits, will also pick up this change. For customer service updates, the O.S. Disk requires version 1.50 ROMs. Any customer who is receiving this as a free upgrade should also receive the new manual “Version 3 Operating System” (p/n 93 11006301). This manual now contains the operating instructions for the SCSI interface and the DI- 10.

Note regarding Operating System size.

To support the new features added by this release, the Operating System has grown. You will see that the O.S. is 160 blocks larger than our previous release, Ver 2.5 1.

This means that with the Version 3.00 O.S.: l

On bootup, the FREE SYSTEM BLOCKS field will display a smaller number than Version 2.51.

l

Banks that were within 160 blocks of the end of memory with Version 2.5 1 will no longer completely fit with

Version 3.00.

l

Instruments that were within 160 blocks of the end of memory with Version 2.5 1 will no longer completely fit with

Version 3.00.

l

Project files that were within 160 blocks of the end of memory with Version 2.5 1 will no longer completely frt with

Version 3.00.

l

Rewriting the new O.S. to a disk that containing Version 2.51 will result in NOT ENOUGH DISK SPACE if the disk did not have 160 blocks free.

The ASR-10 has gone though some major changes since it’s initial release. RamTrack and DiskTrack Recording (Version

2.0) DAT Backup (Version 2.5), and Importing Instruments from AKAI and Roland Libraries (Version 3.0). As we continue to support the ASR- 10 by adding features, the Operating System must grow to accomodate the new software. This is the tradeoff that must be paid. Note, however, that the Version 3.00 Operating System is compatable with the current Ver 1.50

ROMs. So a ROM upgrade is not required (assuming the unit is already running Operating System 1.50 or higher.)

New Feature: Auto Configure of DiskTracks

The ASR-10 can now remember the Audio Track Configuration parameters when the unit is configured for DiskTrack

Recording. These parameters can be saved with Global Parameters. On the subsequent booting of the ASR-10, the unit will prompt you to “CONFIGURE SCSI ATRKS?“. Hitting ENTER at this point will automatically configure the ASR-10 for

DiskTrack recording with your saved parameters. See the Version 3 Operating System manual for details.

New Feature: Auto Prepare of Song Files

The ASR-IO will now automatically prepare the audio tracks for the song whenever a song file is loaded. On completion of the song file load, the display will briefly show “PREPARING AUDIO TRACKS”. Note that song files that do not use audio tracks will still briefly show this message while the song file is being scanned for audio track data.

See the Version 3

Operating System manual for details.


31

Software Notes

New Feature: Import non-ASR Instruments

The ASR- 10 will now import and play sounds from the AKAI and Roland libraries. Unlike other programs that only load wavesample data and loop information, the ASR-10 conversion takes place at the AKAI program level and the Roland Patch level. Parameters such as velocity switchin g, layering, filters, etc are translated to native ASR- 10 instrument format. The new imported instrument can now be saved or edited just like any other ASR-10 instrument. See the Version 3 Operating

System manual for details.

Additional Changes and Fixes:

In addition to the new features mentioned previously, the following problems have been addressed in Version 3.00:

Audio Track Recording - General

Invalid “OUT OF MEMORY” message on Record STOP. Hitting STOP during audio track recording could result in an OUT OF MEMORY message even if free memory was available. This was a cosmetic problem only. No data was lost. Fixed in Version 3.00.

System Error or lockup during KEEP NEW after audio track record.

A scenario could exist where the ASR-10 would crash with a system error (usually 129,215, 217), or the display is frozen o n . . . . EDITING . . . . . after you KEEP NEW to an audio track record. This was a resource-allocation problem that is fixed in Version 3.00.

Audio Track Recording - Stereo

A scenario could exist where the ASR-10 would crash with a system error (usually 129) or the display is frozen on

. . . . EDITING . . . . . when you stop recording or attempt to KEEP NEW after a stereo audio track record. Fixed in

Version 3.00.

DiskTrack Recording

DiskTrack overdub results in System Error 57 on KEEP NEW. A specific punch-in/out situation could result in a System Error 57. This particular problem is unique to DiskTrack overdubs, when punching out on an existing

AudioSample. Fixed in Version 3.00.

Song File Saves and Loads

Loading song files saved with earlier Operating Systems cause lockups or System Errors. Song files that were loaded and resaved across multiple operating systems may not have loaded properly. Defensive logic was added to Version 3.00 to support song files saved across multiple Operating Systems.

Large song fdes created on disk Abnormal termination of sequencer recording could result in sequencer memory being allocated but never released, resulting in a large song file. Version 3.00 fixes this problem.

Sound Voicing/Editing

Delete Wavesample removing all wavesamples in the layer. Certain layering situations could set up a case where deleting a single wavesample resulted in all wavesamples within the selected layer being deleted. This problem is fixed in Version 3.00.

Restrike Time parameter not working on stereo layers. Restrike time was not working properly when STEREO

LAYER LINK was set to ON. Fixed in Version 3.00.

Pops heard on dark, muted sounds when sustain pedal down. Exceeding the available polyphony could result in slight pops which are noticeable on dark sounds. Version 3.00 addresses this problem.

Floppy Disk Commands

Invalid WRONG SIZE DISK message when using COPY FLOPPY DISK co mmand. When using the COPY

FLOPPY DISK, inserting an unformatted destination floppy disk brings up the following prompt: WRONG

SIZE DISK, even if it’s the correct disk density. This should happen only if the destination disk is a different density than the source disk, but this error was appearing if the destination disk was not formatted on an ASR-

10. Fixed in Version 3.00.

32


SOB-ware Notes

FILE OPERATION ERROR message when using COPY FLOPPY DISK command. When the COPY

FLOPPY DISK Command is forced to erase all memory to copy a disk (such as when all memory is used), the

ASR displayed a FILE OPERATION ERROR the first time that the command was invoked. Running the command again resulted in normal operation. Fixed in Version 3.00.

Improper formatting of destination disk when using COPY FLOPPY DISK command.

If destination disk is a

PC-formatted disk of the same density, the disk could be re-formatted as a g-sector ENSONIQ disk, which may or may not match the source disk. If it doesn’t match, the copy may fail. Version 3.00 now ensures that the destination disk inherits the same format as the source disk if formatting is required.

Memory Management Changes

RAM AudioSamples still resident after ERASE SONG AND ALL SEQS command. Effective in Version 3.00, the ERASE SONG + ALL SEQS now releases all memory allocated to RAM AudioSamples and their directory.

This is a logical extension to this command, since the RAM-resident AudioSamples are intended to travel with the song (project) file. Note that disk-resident AudioSamples are unaffected.

System does not release all memory in response to “ERASE MEMORY- OK?” prompt. When running any of these commands: COPY FLOPPY DISK, COPY SCSI DRIVE, BACKUP/RESTORE, DAT BACKUP

RESTORE, and SYSEX RECORDER, The system only deleted resident instruments. Version 3.00 now frees memory allocated by the sequencer memory, RAM AudioSamples, and the SCSI (DiskTrack) cache buffers.

Attempting to load an instrument that is larger than memory that is free or allocated to existing instruments

results in an invalid instrument. Subsequent edits result in lockup. The ASR- 10 is allocating an instrument slot for the instrument to be loaded. If, the instrument cannot fit in memory (even after deleting all resident instruments) the slot allocated for the instrument is never reset. This results in an invalid instrument which will lockup the system if an attempt is made to edit it. This problem has been addressed in Version 3.00.

Attempting to load an instrument that is larger than memory that is free or allocated to existing instruments

results in sequencer memory being erased. The ASR-10 would release all sequencer memory in an attempt to accomodate the instrument being loaded. This has been changed in Version 3.00 so that sequencer memory is not erased automatically by the instrument load function.

System Exclusive

Sysex get wavesample overview command not returning 2nd half of wavesample in the overview block The

WaveSample Overview sys-ex command was only loading a picture of l/2 of the WaveSample selected. Fixed in Version 3.00.

Sysex Recorder function fails when system memory contains large RAM AudioSample data. Invoking the Sys-

Ex recorder when a large amount of memory is being used up by RAMTracks failed to erase the RAMTrack memory when the response to the MUST ERASE MEMORY OK? prompt was YES. Subsequent Audio Track recording could result in invalid error messages. Effective in Version 3.00, erasing memory via the Sysex

Recorder command results in the ASR-10 purging all resident instruments, all sequencer memory (including

RAM AudioSamples and directory), and releasing the SCSI (DiskTrack) cache buffers.


The ASR- 10 Version 3.08 Operating System (DISK only) has been tested and is ready for release to production. All ASR-10 models (keyboard, rack, and keyboard with SCSI) will be getting this O.S. (p/n 853oooOll3) as a running change. The

EPROM update kit, which is included in the SP-3 and DI-10 service kits, will also pick up this change. For customer service updates, the OS. Disk requires version 1 SO ROMs.

Note regarding Operating System size.

The Operating System size has not changed since Version 3.00. Customers who are upgrading from Version 2.5 1 will see that the Operating System requires 160 more blocks. (See Version 3.00 release notes.)

Software Changes:

No new features have been added to this release. This release addresses the following problems that have been reported since

Version 3.00:


Sofhvare Notes

VOICE: MINI mode - no sound:

Layer glide mode = MINI was not dealing with simultaneous key downs properly. When multiple notes went down at the same time, the result would be no audio output. (Granted, this mode dictates that you play monophonically. But if you played a chord you should hear at least one note sound.) This problem originated in Beta version 2.72. It is now fixed.

VOICE- TRIGGER or LEGATO mode - System Error:

Layer glide mode = TRIGGER or LEGATO could cause a system error 129 if multiple notes were played when the system is first booted up. This was an initialization problem that would normally not cause a problem. The only reason that it was found was a demo sequence from the disk DSAX-001 started with a piano chord programmed with the mode =

TRIGGER. Version 3.08 fixes this problem.

IMPORT ROLAND - SOME PATCHES DO NOT IMPORT:

From Roland CD-ROM’s, if the CD was fairly full, some sounds would not show up in the directory listing, or they would show up but attempting to load them would result in a file operation error. This has been fixed in Version 3.08.

IMPORT AKAI - SOME PROGRAMS DO NOT IMPORT:

Some CD-ROM’s in AKAI format may not show all of the programs in a particular volume. This can happen if the CD

ROM has wavesample files interleaved with program files within the same volume (instead of grouping all files of a similar type.) This has been fixed in Version 3.08

IMPORT AKAI: TICKS and POPS:

Some AKAI sounds were importing with pops or ticks in the loop or at the beginning of the sample. The problem was an offset in where the sample starts. Version 3.08 fixes this problem. A work-around in previous OS versions is to adjust the sample start point by increasing it by 5. Same with Loop Position. This work-around should fix most ticks caused by this problem.

IMPORT ERROR 133:

AKAI program Latin Percussion from IN-Vision Disk #6 Volume 7 caused an IMPORT ERROR 133. This error could occur with other A&I imports as well, depending on the particular CD-ROM. This problem has been fixed.

IMPORT AFTERTOUCH ROUTING:

AKAI Import always hard-coded aftertouch routed to Filter modulation amount as 0. This has been fixed.

IMPORT AKAI: WAVESAMPLE FINE TUNING:

Wavesample fine tuning on AKAI programs may cause a wavesample key group to be out of tune with the rest of the keyboard. This has been fixed in Version 3.08. Note that AKAI samplers implement a wavesample fractional loop point that our architecture does not support. If the program uses wavesample fractional loop points, the result is that the wavesample will play in tune until the loop end point is reached, then the loop will go slightly sharp or flat. No workaround for this, it’s in the voice chip.

IMPORT INTO LAST BIN RESULTS IN NO FREE INSTRUMENTS MESSAGE

Importing into the last free instrument location of the ASR-10 results in a successful import but the command exits with a

“NO FREE INSTRUMENTS” message. The command was successful, but the message should not have been displayed.

This has been fixed in Version 3.08.

PHASER+REVERB EFFECT ALGORITHM REPLACED

The PHASER+REVERB algorithm could cause intermittent ticks and pops. This algorithm has been replaced in Version

3.08 to correct this problem.


This operating system addresses the problem of global parameters not being loaded properly on bootup.

SY


ASR Test Procedure

AM-TEST PROCEDURE

The following procedure will aid in troubleshooting the unit. To do the following tests you will need a

MIDI cable, a Dual Foot Switch (model SW-5/10), and a Control Voltage Pedal (model CVP-1). The

ASR-10 should be connected to a sound system in stereo.

1. Power Up and Load in Sounds a ) Turn unit on. All the LEDs above the Instrument buttons should turn on and the display should read ENSONIQ ASR- 10, (then for Racks and keyboards with SCSI: SCSI INSTALLED,

SEARCHING FOR SCSI DEVICE), then PLEASE INSERT DISK.

b) Insert a factory ASR-10 O.S. disk. The display should read LOADING SYSTEM. The keyboard unit will then display TUNING KBD - HANDS OFF. When the keyboard is tuned, all

LEDs should go off.

c ) The display should show FILE 1 TUTORIAL BNK (if it doesn’t, press the

up or down arrow button until it does).

d) Press

Enter-Yes. The display will say LOADING <filename> while loading.

e) The bank is done loading when the display shows BANK LOAD COMPLETED. The following sounds will be loaded into the Instruments*Sequence Track 1 through 6:

Instrument 1

Instrument 2

JM DRUMS

DEMO PERCS

Instrument 3

Instrument 4

M O O G P O P 1

HIGH STRINGS

Instrument 5

Instrument 6

JM CLAV

OB-8* f) Play each sound briefly to make sure that they sound O.K.

* If they don’t sound O.K., see the Distorted Audio section near the front of this manual.

2. Keyboard Test (ASR-10/88 Keyboard Only) a ) Select OB-8 (Instrument*Sequence Track 6).

b ) Play a chromatic scale across the entire keyboard. Press each key down only until normal key travel ends. Do not press into pressure zone. Verify that no pressure effect occurs.

c) Press the key into the pressure zone and verify that pressure causes a change in volume.

* Failure indicates a keyboard problem.

3. Headphone Check a ) Plug headphones directly into headphone jack.

b ) Play a few notes to check for stereo and sound quality.

* If there is a failure, check the connection to the analog jack board.

4. MIDI Test a ) Connect MIDI OUT to MIDI IN with a MIDI cable.

b) Press

Command, then Envl.

c) Press the right arrow button until the display shows MIDI LOOP.

d) Press

EnterDYes. The display shows: PASS = xxx FAIL= yyy


35

ASR Test Procedure xxx = # of times the test passed, yyy = # of times the test failed

e) Press Cancel*No to stop the test. The display shows: MIDI LOOP f) Disconnect the MIDI cable.

* If it fails, check the following: MIDI cable connection and digital jack board to digital board cable.

5. Analog Page a) Press

Command, then Envl. b ) Press the

right arrow button until the display shows EXAMINE ANALOG INPUT.

c) Press EnteraYes. d ) Move

the data entry slider to the bottom of its range.

Keyboard: The display shows: PITCHWHL 64

Rack: The display shows: PITCHWHL 0

e) Press the up arrow button to select the appropriate input and move the selected controller through its full range.

Keyboard:

Controller

Pitch Wheel

Mod Wheel

Display

PITcHWHL xxx

MODWHEEL xxx

Lb

1 2 7

1 2 7

Down Center

0

0

6 4

- - -

Keyboard and Rack: Plug the CVP-1 pedal into the CV jack.

CV Pedal PEDAL xxx 127 0

- - -

Unplug the CV pedal and verify that display shows PEDAL 127.

Volume Slider VOLUME xxx 127 0

- - f) When testing the Data Entry Slider, press

the right arrow button so that the value is underlined.

The display shows: MR. KNOB xxx

Data Entry Slider MR. KNOB xxx

255

g) Press the left arrow button, then the up arrow button.

0 ---

Voltage Reference REFRENCE xxx (xxx must be greater than or eaual to 190) h) Move the Data Entry Slider to the

top of its range. The display shows: R FTSW 0.

Plug the foot switch into the Ft. S

W

. jack. Press the RIGHT foot switch down. The display shows: R FI’SW 127 i) Press

the down arrow button. The display should show: L FISW 0. Press the LEFT foot switch down: The display should show: L FISW 127 j) Press the

down arrow button. The display should show: R PTSEL 0

Plug the foot switch into the Patch Select jack. Press the Right Patch Select foot switch down:

The display should show: R PTSEL 127 k ) Keyboard only: Press the Right Patch select button. You should get the same display message as you did with the foot switch.

1) Press

the down arrow button. The display shows: L PTSEL 0

Press the Left Patch Select foot switch down. The display shows: L PTSEL 127 m) Keyboard Only: Press

the left patch select button. You should get the same display message as you did with the foot switch.

n) Unplug the Patch Select foot switch and Foot switch cables,

36



ASR Test Procedure

o) Press CancebNo to exit this page.

* If any one fails, check connections to the appropriate module. If they all fail, the digital board is possibly at fault.

6. Disk Check a ) Select MOOG POP 1 (press Instrument*Sequence Track 3).

b) Press Command, Instrument.

c) Press the right arrow button until the display shows SAVE INSTRUMENT d) Press EntereYes. The display will show NAME=MOOG POP 1.

e ) Press the down arrow button to change the name to LOOG POP 1.

f) Press Enter*Yes. The display will show DISK COMMAND COMPLETED briefly when finished.

g) Eject the disk and then press Load. Verify that the display shows DISK DRIVE NOT READY.

h) Reinsert the disk and press Load. Verify that the display shows PILE 1 TUTORIAL BNK.

* If there is a failure, check the components in the following in order: 1) disk; 2) disk drive cables; 3) disk drive; and 4) digital board.

7. Sampling Check a) Plug a microphone into Audio Input A/Left jack.

b) Press Sample. The display shows REC SRC=INPUT DRY LEFT. This indicates that the sample will be recorded dry, or before being fed into the signal processor. LEFT indicates which audio input will be sampled. Since the microphone is plugged into the Left Audio Input, there is no need to change this parameter.

c) Press Enter-Yes. The display reads PICK SAMPLE INSTRUMENT.

d ) Press Instrument*Sequence Track 7. The display shows the Level Detect VU screen. As you speak into the microphone, notice that there are lines that fill the display. This indicates the signal level. If you speak loudly, you will probably see the Left Peak Input Level LED light briefly. The optimum level for sampling is when the Peak LED lights occasionally The asterisk in the display represents the sample threshold level. This is the level that the incoming audio e) Adjust the signal level by turning the Input Level knob on the rear panel of the ASR-10.

f) Press EntereYes. The display shows WAITING XXX SEC LEFT. XXX is the total amount of sample time remaining in the ASR-10.

g) Clearly speak into the microphone. The display shows RECORDING and the time begins to countdown.

h) Press Cancel*No. This stops sarnpling, and the display flashes PLAY ROOT KEY.

i) Play a key on the keyboard unit or press Enter-Yes on the Rack. You will now hear your voice.

This key is the Root Key for this sample -- that is, the note at which the sample will play back at its original pitch. If you play keys above the root key, you’ll notice the pitch of your voice getting higher; below root key, your voice will sound lower in pitch.

j) Move the microphone from the Audio Input A/Left jack to the Audio Input B/Right jack.

k ) Press Sample. The display shows the REC SRC (Record Source) page.

1) Press the up arrow button to change the input from LEFT to RIGHT.

37

ASR Test Procedure s) r>

* m) Press

EntereYes. The display will read PICK SAMPLE INSTRUMENT.

n>

Press

Instrument*Sequence Track 8. The Level Detect VU screen will appear. Since the input level should be the same as that of the last sample, there is no need to readjust the Input Level knob.

Press

Enter*Yes. The display reads WAITING XXX SEC LEFT. This number will vary,

P) depending on the length of your initial sample.

Clearly speak into the microphone. The display switches to RECORDING and the time begins to countdown.

Press

Cancel*No. This stops sampling, and the display will flash PLAY ROOT KEY.

Play any note. You will now hear your voice.

If the you get a click in the beginning and/or end of the sound you sampled into the unit or

the sound is distorted, check the Input DC Offset of the unit (see Unit Sounds Distorted near the beginning of this manual).

8. OEX-6sr Check a) Disconnect the audio cables from Main Out Left and Main Out Right.

b ) Connect the audio cables to AUX 1 Left and AUX 1 Right.

c) Select JM DRUMS (press Instrument=Sequence Track 1).

d) Press

Edit, Track.

e) Press the right arrow button until the display shows OUT=WAVESAMPLE.

f) Press the up arrow button until the display shows OUT=AUXl .

g) Press the left arrow button once. The display shows MIX=99 PAN=WS*.

h) Press

the up arrow button to change the WS* to -99.

i) Play some notes. You should hear sound coming from the AUX 1 Left Output.

j) Move

the data entry slider all the way to the top of its range to change -99 to +99.

k ) Play some notes. You should hear sound coming from the AUX 1 Right Output.

1) You can test Aux 2 and Aux 3 in the same manner.

* If there is a failure, check the components in the following in order: 1) cable between OEX-

6sr and analog board; 2) OEX-6sr; 3) analog board; and 4) digital board.


/

Analog Jock Board

Keypod/Disploy Board

Keyboord Assembly

Revlacina ASR-1 O/88 Modules

Removing

Installing

Replacing the Digital Board

1.

Remove all cables connected to the ASR-10, including the power cord.

2 .

Turn the unit upside-down and remove all the screws from the base and rear panel.

3 .

Using a scribe, disconnect the following cables from the main board: a ) JlO - 34-pin ribbon cable to the disk drive, b ) 58 - 6-pin cable to the wheel and patch select board, c) 57 - 20-pin ribbon cable to the keyboard, d) 56 - 34-pin ribbon cable to the analog board, e ) J5 - 20-pin ribbon cable to the digital jack board, f) Jl - 24-pin ribbon cable to the keypad/display board, g) 52 - 7-pin cable to the power supply board, h) J4 - If SCSI is installed, and i) J9 - If Digital I/O is installed.

4 .

Remove the eight (8) screws from the main board: a ) Four (4) from main board to keyboard bracket, b ) One (1) from center support bracket, c) One (1) from digital PCB bracket, and d ) Two SEMs (screws with star washers) from digital heatsink to keyboard bracket heatsink.

ASR-8%On the ASR-88 there are two brackets connecting the digital board to the rear of the keyboard. The digital board is attached to these brackets by two plastic stand-offs. Slide the digital board towards the back of the unit to release the stand-offs from the bracket. Remove the stand-offs from the digital board and place them on the new board.

5 .

Make sure the insulator is in place under the board.

6 .

Install the eight screws into the digital board (see 4 a-d).

7 .

Reconnect all the cables to the digital board (see 3 a-i).

8. If there are expansion SIMMs installed: a ) Remove SIMMs from removed board (see Installing and removing SIMMs), b ) Make sure that the jumper is in the expansion location, and c) Install the SIMMs into the new board.

9 .

Power on and test the unit.

10. Replace all the screws in the bottom plate and rear panel.


4 2

ReDlacina ASR-I O/88 Modules

0

JlO

1 E S

‘P

0

J9

[

Ill

54

J8

0

J 7

0

56

J 5

O T T O

El

O.S.

c two screwinto heat sink7 a

:1

=mounting screw location

Expansioq J u m p e r t-t

Four SIMM sockets

Figure 17 -

ASR- 10 Digital Board

ISECTION I

Replacing the Analog Board

B

R e m o v i n g 1 .

2.

3.

Irlstalling

4.

7.

8.

5.

6.

9.



Remove all cables connected to the analog board.

a) 53 - 6-pin cable to the power supply board.

b ) Jl - 34-pin ribbon cable to the digital board, c) J2 - lo-pin ribbon cable to the analog jack board, and d ) 54 - 20-pin ribbon cable to the analog jack board.

Remove the six (6) screws (ASR-88 has 4 screws and 2 stand offs) from the analog board: a) Four (4) SEMs from the analog heatsink to keyboard bracket, b) One (1) from center support bracket, and c) One (1) from the analog bracket.

Install the six (6) screws (see 4 a-c).

Connect all the cables (see 3 a-d).

Place the bottom panel in place.

Power up, test the unit.

Install all the screws into the bottom panel.

53 0

Jl

II

:: l

.= mounting screw location

Figure 18 -

ASR- 10 Analog Board


ReDiacinP ASR-I O/88 Modules lsECTi0N I

I c

Removing

Replacing the Power Supply Board

1.

Remove all cables connected to the ASR- 10, including the power cord.

2 .


3 .

Remove the digital board (see Section A).

4 .

Remove the digital jack board (see Section F).

5 .

Remove the digital board bracket: a) Remove one (1) #8 SEM screw from the rear channel, and b ) Lift up on the end of the bracket where the screw was until the front end of the bracket can be removed from its hole in the keyboard bracket.

6 .

Remove the two (2) screws from the line filter.

7 .

Pull the line filter through its hole in the I/O bracket to the outside of the unit. Let it hang by the wires. You should now be able to reach the power supply screws.

8 .

Using a scribe, disconnect cables and wires from the power supply board: a) Xl (or 52) - 7-pin cable to the digital board, b ) 53 - 6-pin cable to the analog board, c) Jl - 7-pin cable to the keypad/display board, d ) J4 - g-pin cable to the transformer, e) Tl and T2 - green transformer wires, f) Wires to the power switch: T5 = orange, T6 = white, and T8 = blue, and

_ g) T7 - red wire to the line filter.

IMPORTANT!

The connector on the g-pin cable from the transformer has a high retention force. Please use a scribe, screwdriver, or similar tool to remove it. Do not pull on the wires!

Installing

9 .

Remove the six (6) screws (4 screws on the ASR-88) that hold the power supply board to the unit: a) Three (3) SEMs from heatsink to keyboard bracket, and b ) Three (3) #8 screws into the back extrusion.

10. Install the screws into the power supply board (see 9 a-b)

11. Reattach all cables and wires (see 8 a-g).

12. Install the digital bracket: a) Place notched end into hole of the keyboard bracket, b ) Move bracket down until the notch part comes through the hole in the top of the keyboard bracket, and c) Install the one (1) SEM to hold the digital bracket in place.

13. Move the line filter back into place, and install the two (2) flat head Phillips screws that hold it in place.

14. Install the digital jack board (see Section F).

15. Install the digital board (see Section A).

43


Replacing ASR-I O/88 Modules

Replacing the Keypad/Display Board

Removing

NOTE:

Installing

1.


2 .

Remove the volume and data entry knobs.

3 .


4 .


5 .

Remove the digital jack board (see Section F).

6 .

If installed, remove the SCSI board (see Section K).

7 .

Remove the analog board (see Section B).

8 .

Remove the analog jack board (see Section G).

9 . Remove the center support bracket assembly by removing the two (2) 8-32 SEMs (ASRa> b) c>

10 only):

One (1) from the right center bracket to rear extrusion,

One (1) from left center bracket to rear extrusion, and

Remove the two (2) 6-32 SEMs holding the center string bracket to the right and left center brackets.

left center bracket

:

.

:, i.

‘.

a hnr center stringer bracket l

I

$

:

-

,z right center bracket nm

Figure 19 -

ASR-10 Center Support

Bracket Assembly

10. Unplug the disk drive power cable (4-pin) from the disk drive side of the keypad/display board.

To make sure that later units don’t have stuck buttons, an M4xlOmm hex head set screw was added to locate the keypad/display board properly. Don’t remove the hex head set screw.

11. Remove ten (10) #8 screws that hold the keypad/display board to the front panel.

12. Disconnect Jl 24-pin ribbon cable from the keypad/display board.

13. Disconnect J2 7-pin power cable from the keypad/display board and remove the board from the unit.

14. Make sure the lens and display are clean.

15. Check to make sure that the following keypad/display board LEDs are straight: DS 17

(left peak LED); DS 19 (left signal LED); DS18 (right peak LED); and DS20 (right signal

LED). If they are bent they will not fit into their LED lens on the front panel.

44


ReDlack! ASR-1 O/88 Modules

16. Connect Jl 24-pin ribbon cable and J2 7-pin power cable to the keypad/display board.

Make sure to do this before installing the keypad/display board because the connectors are difficult to reach once the board is installed.

17. Place the keypad/display board into the unit. Make sure that the buttons are through the holes in the front panel. Make sure that the slider bucket legs (for the volume and data entry pots) are through the holes in the keypad/display board.

18. Starting with the non-slotted holes closest to the keyboard, install the ten (10) #8 screws that hold the keypad/display board to the front panel.

19. Install the center right, center left, and center stringer support brackets (see Figure 17)

USING NO MORE THAN 8 INCH POUNDS!

a) Two (2) 6-32 SEMs into center stringer to left and right center brackets, b ) One (1) 8-32 SEM into right center bracket to rear extrusion, and c) One (1) 8-32 SEM into left center bracket to rear extrusion.

20. Install the analog jack board (see Section G).

2 1. Install the analog board (see Section B).

22. Install the digital jack board (see Section F).


SECTION

Replacing the Keyboard (ASR-10)

E

/

1.


Removing

2 .


3 .


4 . Disconnect the 20-pin ribbon cable from the keyboard.

Installing

5 .

Remove the thirteen (13) screws that hold the keyboard to the keyboard bracket (see

Figure 18): a ) Six (6) M3.5x19 in the front part (key tips side) of the keyboard bracket, and b ) Seven (7) M3.5x7.5 screws from the back (spring side) of the keyboard bracket. Note that one screw holds the wheels/patch select wires to the keyboard bracket.

6 .

Turn the unit rightsideup with the keyboard closest to you.

7 .

Lift the front of the white keys until they rest on the front extrusion.

8 .

Slide the keyboard toward you.

9 .

Slide the keyboard (springs first) into the unit. Gently push the white keys down behind the front extrusion.

10. Carefully turn the unit upside-down, jack side closest to you.

11. Starting at the right comer away from you, install the six (6) M3.5x19 screws.

12. Install the seven (7) M3.5x7.5 screws into the other row of holes. Be sure to put the patch select cable tie in with the far left screw.

13. Connect the 20-pin ribbon cable to the keyboard.


15. Replace the base pan.

16. Test the unit.

ASR Service Manual 4.5


M3.5~19 moun&ng screws

0 a

0 0 43

M3.5x7.5 mounting screws

Keytips side

0 a a 0 kevboard connector

0

0 Figure 20 -

ASR- 10 Keyboard

Mounting Bracket

E

Replacing the Keyboard (ASR-88)

1. Remove all cables connected to the ASR-88 including the power cord

2. Turn the unit upside-down and remove all the screws from the base and rear panel.

3. Remove the digital board (see Section A).

4. Remove the analog board (see section B)

5. Remove the SCSI board (see section K)

6. Disconnect the 20 pin ribbon cable from Pl on the keyboard adapter board.

7. There are seven brackets you will have to remove before you can take the keyboard out of the unit. With the unit upside-down, and the keys facing away from you, remove the following brackets from left to right (see figure 21): e f b c a

4 6 d

/

Figure 21- ASR-88 Bracket locations

8

/

a. The bracket that is across the ASR from front to back. This bracket has seven screws securing it to the unit, two to the front of the ASR’s frame, two to the back of the ASR’s frame, two to the ASR’s keyboard assembly, and one that connects to the bracket that runs accross to the SCSI board.

b. The analog board mounting bracket. There are three screws securing this bracket to the front of the ASR frame.

c. The digital I/O board mounting bracket. There are two screws securing this bracket to the front of the ASR Frame.


ReDlacina ASR-I O/88 Modules

d. The long narrow bracket that was connected to the first bracket you removed. There should be just one screw holding this bracket in place at this point.

e. The bracket that is secured to the front of the ASR frame and the center mount of the keyboard assembly. There are two screws securing this bracket to the front of the ASR frame, and one screw securing it to the keyboard assembly.

5 The bracket that the digital board heat sink mounts to. There is one screw securing this bracket to the front of the keyboard frame and one securing it to the keyboard assembly.

g. The short narrow bracket that secures the keyboard assembly to the side of the unit.

There are two screws securing this bracket to the keyboard assembly.

8. It is best to do this step with two people. Watch out for sharp edges on the keyboard assembly. Lift the keyboard assembly out of the unit.

9. Remove the keyboard adapter board from the old keyboard assembly, and install it on the new keyboard assembly.

10. Place the new keyboard in the unit and replace the brackets in reverse order.

11, Replace the digital board.

12. Replace the analog board.

13. Replace the base pan.

14. Test the unit.

SECTION

Replacing the Digital Jack

Board

F

Removing

Installing 6.

7 .

8 .

9 .

1.


2 .


3.

4 .


Remove the four (4) screws that hold the digital jack board to the I/O bracket.

5 .

Disconnect JlO - 20-pin ribbon cable from the digital jack board.

Insert jacks into the I/O bracket.

Install the four (4) screws that hold the digital jack board to the I/O bracket.

Reconnect JlO to the digital jack board, note that it is keyed.

Install the digital board (see Section A).

Replacing the Analog Jack Board

Removing 1.


2 .


3 .

Remove the analog board (see Section B).

4 . Remove cables from the analog jack board:


47

Reulacina ASR-I O/88 Modules a) J8 - 20-pin ribbon cable, and b) J7 - lo-pin ribbon cable.

5 .

Remove the four (4) screws that hold the analog jack board to the I/O bracket.

6 .

Lift the left end above the analog bracket and slide the jacks, pot, and switch out of holes in the I/O bracket.

7 .

Point the 57 corner of the board toward the keypad/display board and lift the analog jack bord out of the unit jacks first.

8.

Slide the jack edge of the board into the proper holes on the I./O bracket.

9 .

Install the four (4) screws that hold the analog jack boar to the I/O bracket.

10. Attach J7 - IO-pin ribbon cable and 58 20-pin ribbon cable to the analog jack board.

11. Install the analog board (see Section B).

Replacing the Disk Drive

Removing

NOTE:

Installing

1.


2 .


3 .

Disconnect the 34-pin ribbon cable and the 4-pin (3-wire) power cable from the disk drive.

4 . Remove the four (4) screws that hold the disk drive to the plastic wheel cover.

On early units, you may break the disk drive bezel when removing the disk drive from the unit. The wheel cover was modified on later units to prevent this.

5 .

Carefully slide the disk drive toward the rear of the unit.

6 .

Make sure the disk drive switches or jumpers are set properly (see Disk Drives, beginning of this manual).

7 .

Slide the disk drive into the wheel cover until the mounting holes line up.

8 .

Install the four screws that hold the disk drive to the wheel cover.

9 .

Connect the 34-pin ribbon cable and the 4-pin (3-wire) power cable to the disk drive.

Replacing the Transformer

48

Removing 1.


2 .


3 .

Using a scribe, disconnect transformer cables and wires from the power supply board: a) 54 - 9-pin cable to the transformer, b ) Tl and T2 - green transformer wires, c) Wires to the power switch: T5 = orange, T6 = white, and T8 = blue, and


Installing

Replacinn ASR-1 O/88 Modules d ) T7 - red wire to the line filter.

4 . Remove the two (2) flat head screws from the line filter.

5 .

Pull the line filter through its hole in the I/O bracket to the outside of the unit. Let it hang by the wires. You should now be able to reach the transformer bracket screws.

6 .

Remove the four (4) #8 screws that hold the transformer bracket to the unit.

7 .

Remove the transformer and transformer bracket from the unit.

8.

With the slotted holes of the transformer bracket toward the switch and line filter, install the transformer and bracket into the unit.

9 .

Install two screws into the holes closest to the keyboard first. Then install the other two screws that fasten the transformer bracket to the unit.

10. Reconnect the wires and cables to the power supply board (see 3 a-d).

11.

Move the line filter back into place, and install the two (2) flat head phillips screws that hold it in place.

SECTION

J

Removing

Installing

Replacing the Line Filter

1.

2.

3.



Remove the three (3) wires connected to the back of the Filter, paying particular attention

4.

to the polarity.

Remove the two (2) screws and nuts that secure the Filter to the case. Note that there are star washers on the inside only.

Install the new Line Filter from outside the case using the two screws, star washers and 5.

nuts.

6. Reconnect the three wires to the Filter, again noting the proper polarity.

IMPORTANT!

Failure to connect the wires to their proper posts can lead to a potential shock hazard (see

Figure 8).

7. Power up, test the unit, and attach the base pan.



Installing and Removing the SCSI Board

Installing 1.


2 .


3 .

Disconnect both ends of the 34-pin ribbon cable that connect the digital board (J6) to the analog board (Jl).

4 . Remove the two (2) KEPs nuts (nuts with star washers attached) that hold the SCSI opening bracket to the I./O bracket. The SCSI opening bracket is no longer needed.

5 .

Install the SCSI board between the analog board (4090017101) and the digital board (see

Figure 19): a ) Install the two (2) plastic standoffs into the holes in the keyboard bracket, and b ) Install two (2) 6-32 screws into the mounting brackets. One on center stringer bracket and one on the right support bracket.

6. Connect the following cables: a ) A 34-pin ribbon cable: SCSI board 54 to edge analog board J 1, b ) A 34-pin ribbon cable: SCSI board 52 to edge of digital board 56, and c) A 26-pin ribbon cable: SCSI board 53 to center of digital board 54.

7 . Attach SCSI cable bracket to the I/O bracket using the two (2) KEPs nuts.

8 .

Attach the cable from the SCSI cable bracket to Jl on the SCSI board.

9 .

Place an ohmmeter across R14 of the SCSI board (see Figure 19).

10. Verify that the resistance is between 1900% and 2 100% .

heat sink 0

ANALOG

0 o standoff locations l screw locations

0

4090016901

S C S I B O A R D J 3

DIGITAL BOARD

26-pin ibbon cable to J4 enter of digital board

50

Figure 22 - SCSI Board Mounting

11. If it is less than 1900% , there is a total or partial short between analog and digital ground.

Disconnect the 20-pin ribbon cable from 54 on the analog board.

a) If this fixes the problem, there is a problem with the tape insulation on the analog jack board mounting tab.

1 ) Remove the analog board and analog jack board as described in Sections B and G.


Replacinn ASR-I O/88 Modules

2) Make sure that the insulation completely covers and slightly overhands the mounting tab.

b ) If disconnecting the 20-pin ribbon cable from J4 on the analog board doesn’t fix the problem, there is a problem with the tape insulation on an analog board mounting location.

1) Remove the analog board as described in Section B.

2) Make sure that the tape insulation completely covers, and slightly overhangs, the analog board mounting locations.

c) Replace the boards as described in Sections B and G.

d) Verify that the resistance across R14 is between 1900% and 2100%.

12. Place the bottom plate on, but don’t install any screws yet.

13. Turn the unit right side up. Turn it on and watch the display.

14. Verify that the display shows ENSONIQ ASR-10, then SCSI INSTALLED, then

SEARCHING FOR SCSI DEVICE.

15. Turn the unit off and turn it upside down and replace allthe screws on the bottom plate and rear panel (use no more than 8 Mbs of torque ).

SECTION

Replacing the Digital I/O Option Board

L

I

Removing 1.


2 .

Turn the unit upside down on a soft surface and remove all the screws from the base and rear panel. Note that you will have at least two different types of screws. Remove the bottom cover.

3 .

Make sure. that the EPROMs are version 1 SOB or higher. The two Operating System

EPROMs, LOWER (U19) and UPPER (U22), are located in the center of the digital board (409001700X) near the OTTO chip.

4 .

With the jacks closest to you, find the four (4) holes in the keyboard bracket to the left of the digital board. The disk drive ribbon cable runs through this area and it is the area behind the SCSI board (see Figure 20).

NOTE: On some units one of the two disk drive ribbon cable clamps may have been put on the keyboard bracket in this DI-10 mounting area. If the unit you are working on is like this, the ribbon cable clamp must be removed. A screwdriver will do the job, as the cable clamp is attached with double-sided foam tape. There is no need to replace the ribbon cable clamp.

The DI-10 board will mount on top of the disk drive ribbon cable and hold it in place.

5 .

Place the DI-10 board assembly over the holes in the position shown in Figure 20. Snap the DI-10 board standoffs into the keyboard bracket. Make sure that the plastic standoffs are fully seated in the holes.

51 ASR Service Manual


Remove any cable clips beneath e DI-10 Board

0

DI-10

- Digital I/O Board ve

Mylar Insulator between disk drive ca Ie and Didtal I/O Board

/

0 /

/

NOTE: through rounded cable clamp

Analog Jack Board

I I

J9 Digitrh I/O

\

\

Digital Jack Board

Analog Main Board Power Cable

Figure 23 - Installing a DI-10 Board into an ASR-10 Keyboard Unit

If you accidentally put the board on in the wrong way, it may be removed by pushing in the center tab of each plastic standoff. Do each comer one at a time, lifting the board just high enough to keep the plastic tab from relocking. When all four are done, the board can be lifted off and reseated in the proper direction.

6 .

Connect one end of the 20-pin ribbon to the DI-10 board at 53.

7 .

Feed the dual shielded cable through the slot in the metal work under the back (toward you) of the SCSI board mounting area.

8 .

Plug the dual shielded cable into Jl of the DI-10 board and J9 of the digital jack board.

Note that the connectors are keyed.

9 .

Remove the mounting screw from the lower left hand comer of the digital board. This screw also holds in place a rounded cable clamp with a multi-conductor power cable going through it. Place the dual shielded cable into the cable clamp with the power cable.

Reattach the cable clamp and digital board to the frame as it originally was.

10. Make sure that the unit is working properly.

11. Turn the unit off and turn it upside down and replace all the screws on the bottom plate and rear panel (use no more than 8 idlbs of torque).

52


Replacing ASR-1 O/88 Modules

Replacing the O.S. EPROMs

The ASR-10 operating system can be updated by replacing the O.S. EPROMs. Each ASR-10 has two Operating System EPROMs located on the digital board near the OTTO chip (U29).

R e m o v i n g 1 .

2 .

Installing 3.



The two Operating System EPROMs, LOWER (U19) and UPPER (U22), are located in the center of the digital board next to the OTTO chip (see Figure 15). Carefully remove the two EPROMs and insert the replacement EPROMs into their respective sockets. Be sure the notch in each EPROM is facing away from the SIMM sockets.

IMPORTANT!

Make sure all audio cables are unplugged BEFORE turning the unit on. The first time you turn on the ASR-10 after updating the software, the unit may make a pop.

8.

9 .

6 .

7.

4 .

5 .

Check the software version by pressing the Command then Env 1.

Using the right or left arrow button, scroll until the display shows SOFTWARE

I N F O R M A T I O N .

Press Enter*Yes.

Press the up arrow button until the display shows ROM=XX. The version number should be the same as that printed on the label of the newly installed EPROMs.

Test the unit.

Replace all the screws on the bottom plate (use no more than 8 in/lbs of torque).

ASR Service Manual 5 3

Replacing ASR- I O/88 Modules

Replacing the Wheel Assembly

Removing

NOTE:

Installing

1.


2 .


3 .

Disconnect the 6-pin cable from the patch select/wheel board (small board near the wheels).

4 . Remove the four (4) screws from the wheel brackets (2 from each bracket).

If the mounting posts for the wheel brackets are broken, call ENSONIQ for a new wheel cover that has the posts reinforced.

5 .

Remove the three (3) screws from the patch select/wheel board.

6 .

Install the new patch select/wheel board using the three (3) screws (make sure the underlay and patch select buttons are in place).

7 .

Using two screws, install the new pitch wheel (with spring) into the slot closest to the endcap.

8 .

Using two screws, install the new mod wheel (no spring) into the other slot.

9 . Connect the 6-pin cable to the patch select/wheel board.

10. Power up, test the unit, and attach the base pan.

54


‘--$


/----,-

Figure 24 - ASR-1OR Exploded View

55

Replacing ASR Rack Modules

Replacing the Rack Digital Board

Removing

Installing

NOTE:

1.

Remove all cables connected to the ASR-10 Rack, including the power cord.

2 .

Remove the lid (see below).

3 .

The digital main board is the large board on top that you see when the lid is off.

Disconnect all cables from the digital board: a) J2 Power 7-pin, b) Jl Display, 24-pin ribbon, c) JlO Disk, 34-pin ribbon, d) 57 KPC simulator, 20-pin ribbon, e) 56 Analog, 34-pin ribbon, f) J5 Digital Jack, 20-pin ribbon, and g) J4 SCSI, 26-pin ribbon.

4 .

Remove the ten (10) machine screws from the digital board: a) Four (4) in front, b) Four (4) in back, and c) Two (2) SEMs from regulator heat sink to bracket.

5 .

Before installing the new circuit board, make sure the mylar insulator is in place.

You may want to use a drop of Loctite screws that hold the circuit boards if nylock screws are not used (see Mechanical Issues).

6 .

Replace the main board screws: the two (2) SEMs are for the regulator heat sink.

7 .

Reconnect the cables (see step 3).

8 .

Power up, test the unit, and reattach the lid (see below).

Removing

REMOVING THE LID

Remove the twenty-five (25) screws that fasten the lid.

1.

Remove the four (4) #8-32 machine screws and star washers from each side panel of the unit (the ones that could attach the mounting ears): a) Four (4) #8-32 x l/2” screws closest to front panel, and b) Four (4) #8-32 x 3/8” screws.

2 .

Remove the thirteen (13) #6-32 SEMS machine screws from: a) Two (2) on each side, b) Five (5) across the back, c) With front panel closest to you, on the left side, three (3) from heat sink bracket to chassis, and d ) One (1) above the disk drive (about an inch back from the front panel) that attaches the cover to the disk drive bracket.

3.

Remove the four (4) #6 x 3/16” self-tapping screws that attach the lid to the front panel.

4 .

Carefully remove the lid from the unit.

-

-

-

-

56

ASR Service Mhual


REATTACHING THE LID

IMPORTANT!

Be sure to install all screws with a hand screwdriver to avoid stripping the holes. ASR-10

Racks with serial numbers between 10000 and 10500, the rack ear screw PEMs (screw mounting standoffs) may fall inside the unit.

Installing 1.

Install the thirteen (13) #6-32 SEMS machine screws: a) Nine (9) lid to chassis, b ) One (1) above the disk drive (about an inch back from the front panel) that attaches the cover to the disk drive bracket, and c) Three (3) from heat sink bracket to chassis (with front panel closest to you, on the left side).

2 .

Install the four (4) #6 x 3/16” self-tapping screws on the top of the unit closest to the front panel.

3 .

Install the four (4) machine screws and star washers into

each side of the unit (the ones that could attach the mounting ears): a ) Four (4) #8-32 x l/2” screws closest to front panel, and b) Four (4) #8-32 x 3/8” screws.

Replacing the Rack Analog Board

Installing

NOTE:

1.


2.. Remove the lid (see Section A).

3 .

Remove the PCB Mounting Bracket: a) Disconnect the 20-pin ribbon cable from Jl on the digital board, b ) Disconnect the 34-pin ribbon cable from JlO on the digital board, c) Disconnect the power cable from 52 of the digital board, d ) Remove the six (6) #6-32 x l/4 SEMs from the rear of the bottom housing, e) Slide the whole assembly toward the front panel, f) Tilt the front of the PCB Mounting Bracket up and disconnect the 6-pin power cable from the analog board, g) Disconnect the 26-pin ribbon cable from Jl on the SCSI board, and h) Now you will be able to tilt the whole PCB Mounting Bracket so that the it is balancing on the jacks.

4 .

Remove the OEX-6sr board (see Section N).

5 .

Disconnect the following cables from the analog board: a) 54, 20-pin ribbon, b ) J 1, 34-pin ribbon, and c) 52, lo-pin ribbon.

6 .

Remove the four (4) 6-32 SEMs from the analog board heatsink.

7 .

Pop the analog board from the plastic standoffs by squeezing standoffs with needlenose pliers.

8 .

Snap new analog board onto plastic standoffs.


ASR Service Manual 57


9 . Install the four (4) SEMs into the analog board heatsink.

10. Reconnect the cables (see step 5).

11. Install OEX-6sr board (see Section N).

12. Install the PCB Mounting Bracket: a) Connect the 26-pin rear panel connector cable into Jl of the SCSI board, b ) Slide entire assembly toward the back of the unit. NOTE: Make sure the tabs on the power supply heat sink bracket slide into the slots on the bottom of the PCB Mounting

Bracket, c) Slide all jacks into the holes in the rear panel, d) Reconnect all cables, and e) Install the six (6) #6-32 x l/4 SEMs to the rear panel to PCB Mounting Bracket.

13. Power up, test the unit, and reattach the lid (see Section A).

SECTION

Replacing the Rack Power Supply Board

/

Removing 1.


2 .

Remove the lid (see Section A).

3 .

Remove the PCB Mounting Bracket: a ) Disconnect the 20-pin ribbon cable from Jl on the digital board, b ) Disconnect the 34-pin ribbon cable from JlO on the digital board, c) . Disconnect the power cable from 52 of the digital board, d ) Remove the six (6) #6-32 x l/4 SEMs from the rear of the bottom housing, e) Slide the whole assembly toward the front panel, f) Tilt the front of the PCB Mounting Bracket up and disconnect the 6-pin power cable from the analog board, g) Disconnect the 26-pin ribbon cable from Jl on the SCSI board, and h) Now you will be able to tilt the whole PCB Mounting Bracket so that the it is balancing on the jacks.

4 .

Disconnect the 9-pin cable (J4), the 6-pin cable (J3), and two 7-pin cables (J2, and Xl or

51) from the power supply board. Note that these cables are keyed.

IMPORTANT!

The connectors have a high retention force. Please use a scribe, screwdriver, or similar tool to remove it (see p. 4). Do not pull on the wires!

Installing

NOTE:

5.

Disconnect the following wires from the transformer board: a ) Green Transformer wires from Tl and T2, and b ) Power Switch wires from T7 (red), T8 (blue), T6 (white), and T5 (orange).

6 .

Remove the two (2) 6-32 x l/4 SEM screws from the front heatsink to the bottom chassis.

7 . With the front panel closest to you, slide the board to the right and then toward you and out.

8.

Insert the replacement power supply board by placing the rear heatsink tabs into the bracket slots.



ReDlacina ASR Rack Modules

9 .

Reinstall the power supply screws. Carefully reconnect the four cables and six wires, paying particular attention to the alignment of pins and connectors.

10. Install the PCB Mounting Bracket: a ) Connect the 26-pin rear panel connector cable into Jl of the SCSI board, b ) Slide entire assembly toward the back of the unit. NOTE: Make sure the tabs on the power supply heat sink bracket slide into the slots on the bottom of the PCB Mounting

Bracket, c) Slide all jacks into the holes in the rear panel, d) Reconnect all cables, and e) Install the six (6) #6-32 x l/4 SEMs to the rear panel to PCB Mounting Bracket.


SECTION 1

Replacing the Rack Keypad/Display Board

D

Removing 1.


2 .


3.

Remove the two (2) slider knobs from the front panel.

Installing

4 .

Carefully tip the unit onto its rear panel. Remove the four (4) self-tapping screws from the bottom of the unit closest to the control panel.

5.

Remove the one (1) machine screw from the bottom of the unit located about 2” back from

. the control panel (this screw goes through the disk drive mounting bracket inside the unit).

6. Remove the following cables: a ) JlO from the main digital board to the disk drive, b) 7-pin connector on keypad, and c) 24-pin cable on the left side of keypad.

7 .

Carefully slide the front panel assembly toward you. If you are careful, you don’t have to remove the headphone jack nor disconnect the wires from the power switch.

8.

Remove the KPC simulator board (see Section E).

9 .

Place the control panel face down on a soft surface. Remove the nine (9) screws that attach the keypad/display board to the control panel.

10. Install the new keypad/display board onto the new control panel using the nine screws.

11. Reconnect the 20-pin ribbon cable to the KPC simulator board before sliding the new assembly into place (make sure the striped side of the ribbon cable is on pin 1).

IMPORTANT!

Reconnect the 20-pin ribbon cable to the KPC simulator board before sliding the new assembly into place. Be sure to install all screws with a hand screwdriver to avoid stripping the holes.

12. Install the six (6) #6 x 3/16 screws on the bottom of the unit closest to the control panel.

13. Install the one (1) machine screw from the bottom of the unit located about 1” back from the control panel (this screw goes through the disk drive mounting bracket inside the unit).


SY ASR Service Manual


Replacing the Rack KPC Simulator Board

Removing 1.

2 .

3.

4 .

Installing 5.

6.

7 .

8.



Disconnect the 20-pin ribbon cable from the IWC simulator board.

Pop the KPC simulator board from the four white standoffs by squeezing the standoffs. If this is difficult, you can remove the front panel (see Section D).

Install the new KPC simulator board onto the standoffs making sure the side of the board with the 20-pin connector is closest to the base of the unit.

Connect the 20-pin ribbon cable making sure that the striped side is on pin 1.

Reinstall the front panel (see Section D).

Power up, test the unit, and reattach the lid (see Section A).

ISECTION 1

F

Replacing the Rack Digital Jack Board

Removing 1.

2 .

3 .

4 .

Installing 5.


Remove the lid (see Section A). The digital jack board (17201) is on top of the PCB

Mounting Bracket.

Disconnect the 20-pin ribbon cable from JlO of the digital Jack board.

Remove the four (4) 6-32 machine screws that hold the digital jack board to the PCB

Mounting Bracket and remove the board from the unit.

Place the board into the unit lining up jacks and holes on the rear panel.

NOTE: You may want to use a drop of Loctite screws that hold the circuit boards if nylock screws are not used (see Mechanical Issues).

6 .

Install the four (4) 643 machine screws that attach the digital jack board to the PCB

Mounting Bracket.

7 .

Connect the 20-pin ribbon cable from digital board J5 to digital jack board 53. NOTE: the red connector tab must go into the hole through the jack board.

Replacing the Rack Analog Jack Board

Removing 1.

Remove all cables connected to the ASR- 10 Rack, including the power cord.

2 .


3 .

Remove the PCB Mounting Bracket (see Section 0).

4 .

Remove the OEX-6sr board (see Section N).


-

-

Installing

NOTE:


5 .

Disconnect 20-pin ribbon cable from J8 of the analog jack board:

6 .

Remove the four (4) 6-32 machine screws that hold the board to the PCB Mounting

Bracket tabs, and remove the board from the unit.

7 .

Insert the jacks and pot into the holes on the rear panel.


8 .

Install the four (4) machine screws that hold the board to the PCB Mounting Bracket.

9 .

Connect the 20-pin ribbon cable to 58 of the analog jack board. NOTE: The tab on the red connector goes into the hole on the analog jack board.

10. Install the OEX-6sr board (see Section N).

11. Install the Main PCB Bracket (see Section 0).

12. Reattach the lid (see Section A).

Replacing the

Rack

Disk Drive

R e m o v i n g 1 .

2 .

3 .


Remove the lid (see Section A). Remove the front panel (see Section D).

Disconnect the two cables from the disk drive, paying particular attention to the polarity

(see p. 1, the disk drive).

4..

5 .

6 .

Remove the four (4) screws that attach the disk drive mounting brackets to the control panel.

Remove the four (4) screws that attach the mounting brackets to the disk drive.

Immediately place the defective drive into the anti-static bag that the new drive came in.

Installing 7.

Make sure the disk drive switches or jumpers are set properly (see Disk Drives, beginning of this manual).

8. Attach the mounting brackets to the new disk drive using the four screws.

IMPORTANT!

Be sure to install all screws into the control panel with a hand screw driver to avoid stripping the holes.

9 .

Attach the mounting brackets to the front panel trying to use the same holes.

10. Attach the front panel to the base (see Section D).

11. Connect the two cables, paying particular attention to the alignment of pins and connectors.




Replacing the Rack Transformer

Removing

Installing

1.


2 .


3 .


4 . Disconnect the transformer cables and wires to the power supply.

5 .

Remove the four screws and flat washers that hold the transformer in place.

6 .

Insert the new transformer and attach it to the base using the four screws and flat washers.

7 .

Reattach the cables and wires to the power supply.

8 .

Reinstall the PCB Mounting Bracket (see Section 0).

9 .


ISECTION 1

Replacing the Rack Line Filter

IJ

R e m o v i n g 1 .

2.

3.

4.




Remove the three (3) wires connected to the back of the filter, paying particular attention to the polarity.

5.

Remove the two (2) screws and nuts that secure the filter to the case. Note that there are star washers on both sides.

Install the new line filter from the inside of the base using the screws, star washers and Installing 6.

nuts.

7. Reconnect the three wires to the filter, again noting the proper polarity.

IMPORTANT!

Failure to connect the wires to their proper posts can lead to a potential shock hazard (see

Figure 8).

8 .

Install the PCB Mounting Bracket (see Section 0).

9 .




Replacing the Rack SCSI Board

NOTE:

Removing

Installing

1.

Remove all cables connected to the ASR- 10 Rack, including the power cord.

2 .


3 .


4 .

Disconnect the following cables from the SCSI board (16901): a) 34-pin ribbon cables from 52 and 54, and b) 26-pin ribbon cables from Jl and J3.

5 .

Pop the SCSI board from the four white standoffs by squeezing standoffs with needlenose pliers.

6 .

Pop new SCSI board onto four white standoffs.

7 .

Attach the cables listed above in step 4.

8 .

Install the PCB Mounting Bracket (see Section 0).

9 .


,

SECTION

Replacing the Rack Digital I/O Option Board

A emovmg .


2 .


3.. Make sure that the EPROMs are version 1 SOB or higher. The two Operating System

EPROMs, LOWER (U19) and UPPER (U22), are located in the center of the digital board

(409001700X) near the OTTO chip.

3 .

You will be .installing the DI-10 board onto the under side of the PCB Mounting Bracket.


4 . Find the four holes in the center of the underside of the PCB Mounting Bracket.

5 .

Snap the DI-10 board assembly (board with insulator and four plastic standoffs attached) into the four holes, see Figure 21. Make sure it is oriented such that both connectors on the

DI-10 board are toward the SCSI board. Support the other side of the PCB Mounting

Bracket while installing the DI-10 board.

If you accidentally put the board on in the wrong way, it may be removed by pushing in the center tab of each plastic standoff. Do each comer one at a time, lifting the board just high enough to keep the plastic tab from relocking. When all four are done, the board can be lifted off and reseated in the proper direction.

63 ASR Service Manual

Revlacina ASR Rack Modules run dual shielded cable on top of ledge

6 4

Figure 25 - Top Side of the ASR-10 Rack PCB Mounting Bracket

6 .

Connect the 20-pin ribbon to 53 of the DI-10 board (single bend end) and the other side to

J9 on the digital board (double bend end).

7 .

Plug one end of the dual shielded cable onto Jl on the DI-10 board. This connector is keyed so it will only go on one way.

8 .

Run the cable down between the DI-10 and SCSI boards. Then turn the cable so that it runs between the SCSI and analog jack board. Bring the cable up over the cutout on the PCB

Mounting Bracket to the top side of said bracket.

9 .

Plug the free end of the dual shielded cable onto J6 of the digital jack board located on the top side of the PCB Mounting Bracket. This connector is keyed so it will only go on one way.

Side closest to Front Panel

Mylar Insulator underneath DI- 10

Underside of

PCB Mounting

IIBracket run dual shielded

OEX-6sr Board

I mlalog

RCV-Xtrl

SCSI Cable to connector on rear panel

Jac

Figure 26 - Installing a DI-10 Board into an ASR-10 Rack Unit


-


Replacing the Rack O.S. EPROMs

R e m o v i n g 1 .

3-.

Installing 3.



The two Operating System EPROMs, LOWER (U19) and UPPER (U22), are located in the center of the digital board next to the OTTO chip (see Figure 15). Carefully remove the two EPROMs and insert the replacement EPROMs into their respective sockets. Be sure the notch in each EPROM is facing away from the SIMM sockets.

JMF’ORTANT!

Make sure all audio cables are unplugged BEFORE turning the unit on. The first time you turn on the ASR-10 after updating the software, the unit may make a pop.

4.

5 .

6 .

7 .

8.

Check the software version by pressing the Command then Env 1.

Using the right or left arrow button, scroll until the display shows SOFTWARE

INFORMATION.

Press Enter-Yes.

Press the up arrow button until the display show ROM=XX. The version number should be the same as that printed on the label of the newly installed EPROMs.

Test the unit. Replace all the screws on the bottom plate (use no more than 8 in/lbs of torque).

Replacing the Rack OEX-6sr Board

Removing

Installing

1.


2 .


3 .


4 .

Remove the four (4) #6-32 screws from the OEX-6sr board.

5 .

Pop the OEX-6sr board from the two white standoffs by squeezing the standoffs.

6 .

Remove 52, lo-pin ribbon cable from the OEX-6sr board.

7 . Remove the OEX-6sr board from the unit.

8 .

Reconnect the ribbon cable from the main board making sure that the striped side is on pin 1.

9 .

With the new OEX-6sr board tilted on a slight angle, insert the jacks into the holes in the rear panel and snap the board onto the standoffs.

10. Install the four (4) screws that hold the OEX-6sr board to the PCB Mounting Bracket.

11. Install the PCB Mounting Bracket (see Section 0).



ReDhCinQ

ASR Rack Modules

SECTION

0

I

Removing

Replacing the PCB Mounting Bracket

1

1.


2 .


3 .

Disconnect the 20-pin ribbon cable from Jl of the digital board.

Installing

4 .

Disconnect the 34-pin ribbon cable from JlO of the digital board.

5 .

Disconnect the 20-pin ribbon cable from the J7 location of the digital board. Use caution as this connector is beneath the cable going to 54 at the center of digital board.

6.

Turn the unit around so that the jacks are closest to you and remove the six (6) #6-32 x 114

SEM (screw with a star washer attached) screws from the back panel of the bottom housing.

7 .

Turn the unit around so that the front panel is closest to you. Carefully, so that it doesn’t drop, slide the PCB mounting bracket toward the front panel.

8.

Tilt the front of the PCB Mounting Bracket up and disconnect the 7-pin power cable from

J2 of the digital board.

9 .

Lift up the front end (side closest to the front panel) of the PCB Mounting Bracket to remove the keyed 6-pin power cable from 53 on the analog board. It is on the underside of the PCB Mounting Bracket in the same area and the 7-pin power cable to the digital board.

10. Now you will be able to tilt the PCB Mounting Bracket to an upright position, so that it is sitting on the jacks. It helps to lift slightly the jack end of the PCB Mounting Bracket first, then the front end.

11. Tilt the PCB Mounting Bracket forward so that the power cables disconnected in steps 8 and 9 can be reattached. Connect the 6-pin power cable to 53 on the analog board

(underside of PCB Mounting Bracket). Connect the 7-pin power cable to J2 on the digital board (top of PCB Mounting Bracket). Note that these connectors are keyed.

12. Slide entire assembly toward the back of the unit. NOTE: Make sure the tabs on the power supply heat sink bracket slide into the slots on the bottom of the PCB Mounting Bracket.

13. Set the PCB Mounting Bracket flat and slide it back such that the slots on the underside of the bracket lock in and the jacks go through the holes in the back of the unit. You can check to see if the slots are locket in by trying to lift the front of the PCB Mounting

Bracket. It shouldn’t lift up. Slide all jacks into the holes in the rear panel.

NOTE: If the jacks don’t align properly, partially insert a small screwdriver into the problem jack and wiggle it into its rear panel hole.

14. Install the six (6) #6-32 x 114 SEMs into the rear panel of the unit to hold the PCB

Mounting Bracket in place.

15. Reconnect all cables (see Figure 20): a ) Connect the 34-pin disk drive ribbon cable to JlO of the digital board; b ) Connect the display cable to Jl of the digital board; c) Connect the KPC simulator cable to J7 of the digital board. Use caution as this connector is beneath the cable going to J4 (center of board).

66


SIMM Information

Important Information about SlMMs

An important Note About Electrostatic Discharge

SIMMs are susceptible to Electrostatic Discharge (ESD) commonly known as “static.” Electrostatic

Discharge can destroy or damage SIMMs. To minimize the possibility of causing ESD damage, here are some procedures you can follow when installing SIMMs:

1 ) Before installing SIMMs, you should be grounded by using a ground strap to discharge any static electric charge built up on your body. The ground strap attaches to your wrist and a ground source allowing your hands to be free to work.

2) Avoid any unnecessary movement, such as scuffing your feet when handling SIMMs, since most movement can generate additional charges of static electricity.

3) Minimize the handling of the SIMMs. Keep them in their static free packages until needed. Only transport or store the SIMMs in their protective packages.

4 ) When handling the SIMMs, avoid touching the connector pins. Try to handle the SIMMs by the edges only.

*Although this information is accurate at the time of this printing, memory technology is one of the most rapidly changing technologies in digital electronics. Because of this, the information printed here is subject to change.

What is a SIMM?

SIMM is an acronym which stands for Single In-line Memory Module. SIMMs have become the industry standard used by most computers (both IBM and Mac compatible) to expand the computer’s memory. Because of this, SIMMs are readily available in most computer software stores, and from mail order organizations. The ASR-10 memory, like a computer, is also expanded using SIMMs.

Drams (amount varies)

Latching Hole

\

Edge Connector

Figure 27 - SIMM Layout

What SlMMs to Use

The ASR-10 and ASR-88 mainboard has been redesigned to change the type of SIMMs that can be used, and the way that you install the SIMMs. The new mainboard is used starting from the following serial numbers:

ASR-10 -

ASR- 1 ORack -

ASR- 10 w/SCSI -

ASR-88 -

20677

014567

13126 all units

Note: It is possible that your unit has a different rev board than these cutoffs suggest, due to a repair or other circumstance. Be sure to check it against the diagrams in this section to confirm which rev board you have.


SIMM Information

What Changed?

The newer board can accept 2 chip and 8 chip memory parts. The older board can only use the 8 chip parts. Since the 2 chip parts are becoming more common (and possibly less expensive) we redesigned the board to allow you to use them.

How to Tell Which Rev Board You Have

The old rev board looks like this:

Jumper is connected for



T w o 1-MegaByte SlMMs

Expansion slots are empty

Note the single jumper above the SIMM slots.

The new rev board looks like this:

SIMM Size Jumpers (2) are set to 1M (1 MegaB

SIMMS). Move the j u m p e r s t o t h e 4 M positions when changing to 4 MegaByie SIMMS.

Jumper is connected for

STANDARD SIMM Memory.

Move to the other pins when using expansion SIMM slots.

Two 1 MegaByte SlMMs

Expansion slots are empty

Note the two d@erent jumpers above the SIMM slots.

Figure 28 - Board differences

Purchasing SlMMs For Your Customer

Here is some important information you should know about purchasing the proper SIMMs, and questions you should ask when ordering SIMMs:

How many pins?

The ASR was designed to use 30-pin SIMMs.

What parity type?

lm x 8 or 4m x 8 (Macintosh) non-parity SIMMs (not lm x 9 or 4m x 9 parity SIMMs). These are the only type of SIMMs that will work with the ASR. Do not use parity SIMMs (designed for IBM PC compatibles). They will not operate properly, and may damage the ASR.

68


SIMM Information

Are they DRAM SIMMs?

When adding memory, only install DRAM SIMMs in the expansion slots. The ASR will not accept static RAM or ROMs.

How Many DRAM Chips (New Rev)?

It doesn’t matter how many (what size) DRAM chips are on the SIMM. The 1 MegaByte SIMiMs can be based on either 1 Megabit (8 chips) or 4 Megabit ( 2 chips) DRAM chips and the 4 MegaByte

SIMMs can be based on either 4 Megabit (8 chips) or 16 Megabit (2 chips) DRAM chips. You can choose to use two of the 8 chip parts and two of the 2 chip parts if desired.

It is not possible to mix 1 MegaByte and 4 MegaByte SIMM in a new Rev ASR board.

How Many DRAM Chips (Old Rev)?

The old rev board can only use 8 chip parts for either the 1 MegaByte and the 4 Megtiyte SIMMs.

You can mix the 1 Megbyte and 4 Megabyte SIMMs, as long as they are used in pairs (two of each).

Are the DRAM

S

all on one side of the SIMM?

Use SIMMs with DRAMS all on one side. DRAMS on both sides of the SIMM may not fit and therefore will not operate properly, and may cause damage to the ASR. Note that

T.S.O.P. S&Ills (chips on both sides) will work with the ASR because the chips are very thin.

Are they Composite SIMMs?

Do not use Composite SIMMs. They will not operate properly with an ASR.

What is the Access Speed of the SIMMs?

We recommend using SIMMs with an access speed of 80 nanoseconds or faster.

Internal Memory

As it comes out of the box, the ASR-10 contains 2 MegaEJytes or 1 MegaWord of internal memory (a word is one single sample, or 16 bits). That’s enough for 31.5 (mono) or 15.75

(stereo) seconds of sampling at a 29.8 KHz sample rate, or about 400,000 notes of sequencer memory.

This internal memory is shared by sounds and the sequencer. The memory is distributed

dynamically between instruments and sequences, which means that the more sounds you have in memory, the less sequencer memory you have, and vice versa.

Expanding the ASR-10 Memory

If you want to expand the memory, the ASR-10 can address up to 16 MegaBytes/8 MegaWords, using industry standard lm x 8 or 4m x 8 non-parity SIMMs. There are four different memory allocations, as shown below:

SIMMS

# of SIMMS Used

1 m x 8 (standard) tW0 lmx8 four

4

4mx8 tW0

8 Mega Bytes

Mega Words

Blocks

1

2

3,600’

2

7700.

4

15900’ l

Actual block count may vary due to different OS. Versions.

4mx8 four

1 6

8

31250’

Accessing SlMMs (new Rev board)

To access the SIMMs an ASR-10 keyboard , make sure all cables, especially the power cable,

are unpluggedfrom the ASR-IO. Turn the unit upside down on a soft surface with the keys facing away from you. Remove the two screws holding the trap door and remove the trap door from the bottom of the ASR-10. On an ASR-10 Rack access is gained by removing the entire top case. As it comes from the factory, the ASR-10 will look like this underneath the trap door:


SIMM Infonnation

SIMM Size Jumpers (2) are set to 1 M (1 MegaByte

SIMMS). Move the jumpers to the 4M positions when changing to 4 MegaByte SIMMS.

- Jumper is connected for

STANDARD SIMM

Memory. Move to the other pins when using expansion

SIMM slots.

- Two 1 MegaByte SlMMs


Figure 29 - SIMM Access on the new Rev Board

You will notice that there are two slots with SIMMs installed, and two slots that are empty.

These empty slots are called Expansion SIMM Slots, and are used for installing additional

SIMMs (when expanding the memory). Directly above the Standard SIMM Slots, you will find the Memory Expansion Jumper, and a pair of SIMM Size Jumpers.

About the Memory Expansion Jumper

The Memory Expansion Jumper allows you to access the information in the Expansion SIMM

Slots. It must be moved to the EXP (Expansion) pins in order for any SIMMs plugged into the expansion slots to be recognized. If you do not have any SIMMs plugged into the Expansion slots, the Memory Expansion Jumper must be installed on the STD (Standard) pins, or the ASR-

10 will not boot up (display will be blank).

About the SIMM size Jumpers

The SIMM Size Jumpers determines whether the ASR-10 will recognize lMegaJ3yte or

4MegaByte SlMMs. Both jumpers must be set to the same value (i.e., either both lM, or both

4M). The ASR-10 will not work properly if one is set to 4M and the other to 1M.

Installing SlMMs (new Rev board)

Memory is user installable in 2,4,8, and 16 MegaByte configurations, with 1 and 4 MegaByte

SIMMs. There are only four possible memory configurations available on the ASR-10, as shown in the diagram:


SIMM Size Jumpers are connected to the

1M pi

Memory Expansion Jumper is connected to the

STD (Standard) pins x


1 M pins

SIMM Information


Expansion) pins

Four

1 -MegaByte

S l M M s - Expansion slots

3

2 MegaBytes

This is the way ASR-10 Keyboards and Racks are shipped from ENSONIQ


4M pins


STD (Standard) pins s

4 MegaBytes


4M pins

Memory Expansion Jumper is connected to the pansion) pins

8 MegaBytes 16 MegaBytes

This is how the ASR-88 is shipped from ENSONIQ

Figure 30 - THESE ARE THE ONLY CONFIGURATIONS THAT WILL WORK PROPERLY!

Accessing SlMMs (old Rev board)

To access the SLMMs an ASR- 10 keyboard , make sure all cables, especially the power cable,

are unpluggedfrom the ASR-10. Turn the unit upside down on a soft surface with the keys facing away from you. Remove the two screws holding the trap door and remove the trap door from the bottom of the ASR-10. On an ASR-10 Rack access is gained by removing the entire top case. As it comes from the factory, the ASR-10 will look like this underneath the trap door:

Jumper is connected for



Two 1-MegaByte SlMMs

Expansion slots are empty

Figure 31- SIMM

Access on the Old Rev Board


71

SIMM Information

You will notice that there are two slots with SIMMs installed, and two slots that are empty.

These empty slots are called Expansion SIMM Slots, and are used for adding additional SIMMs

(when expanding the memory). Directly above the Standard SIMM Slots, you will find the

Memory Expansion Jumper.

About the Memory Expansion Jumper

The Memory Expansion Jumper allows you to access the information in the Expansion SIMM

Slots. It must be moved to the EXP (Expansion) pins in order for any SIMMs plugged into the expansion slots to be recognized. If you do not have any SIMMs plugged into the Expansion slots, the Memory Expansion Jumper must be installed on the STD (Standard) pins, or the ASR-

10 will not boot up (display will be blank).

Installing SlMMs (Old Rev Board)

Memory is user-installable in 1,2,4,5, and 8 MegaWord configurations, with 1 and 4 Megabyte

SIMMs, as shown below. There are only five possible memory configurations available on the

ASR-10, as shown in the diagram: -

1 MegaWord

Jumper is connedezi to STD (Stadud) tins

2 MegaWords

Jumper is connected to EXP (Expadcn) p’ns

4 MegaWords

Jumper is ameded to STD (Stcncbd) p’ns

5 htlegaWords

Jumper is connected la-l) cjns

-2

Ex#2n107 slas

> -"

8 MegaWords

Jum is connected

32 -

THESE ARE THE ONLY CONFIGURATIONS THAT W I L L WORK PROPERLY!

About the SIMM Socket

The SIMM socket uses the pins on the end of the latching posts to hold the SIMM in place. The alignment notch on the SIMM prevents it from being installed backwards. Once installed, the retaining posts hold the SIMM in place securely, prevent it from dropping out of the socket.

ASR-10 SIMM Socket

H Latching Posts -

Retaining Post Retaining Post

Figure 33 SIMM Socket Components


SIMM Information

To Remove a SIMM from a SIMM Socket:

Bend thetwo retaining pods out of the way...

just far enough to remove the SIMM

Figure 34 - Removing SIMMs l l

CarefuZZy spread open the retaining posts found on each end of the SIMM. Only spread the posts as far apart as needed to clear the board; these posts can easily break if too much force is applied. If broken, it will be very difficult to secure a new SIMM back into that socket. We suggest spreading one post at a time; that way it’s easier to control the amount of pressure being applied to remove the SIMM.

Once the retaining posts are out of the way, tilt the SIMM toward you, and lift up and out of the socket.

To Install a SIMM into a SIMM Socket:

SIMM Installation - Side View

Push

Press until SIMM locks into position l l

Step 1 Step 2

Figure 35 - Installing SIMMs

Place the connector edge of the SIMM into the SIMM Socket, pressing down slightly. The latching holes on each end of the SIMM will line up with the latching posts when the SIMM is seated properly.

Tilt the SIMM back into the socket until the retaining posts snap in front of the SIMM. A properly installed SIMM should look like this:

Proper SIMM Installation

Retaining Post Retaining Post

Figure 36 - A properly Installed SIMM l

Reinstall the trap door. To verify that you’ve expanded your memory correctly, after powering up the ASR-10, press Edit, then SystemeMIDI and scroll until the display shows FREE SYSTEM

BLOCKS= (expanded memory amount in blocks). See the chart at the begining of this section for the proper number of blocks for each configuration.


SCSI Infomtion

SCSI Information

SCSI Cables - SCSI cables are available from computer stores in a price range from about $12 to $50.

Usually the less expensive cables cut comers on materials and they may become unreliable. It is worth the extra money to purchase a good SCSI cable. Most SCSI drives come with a 25-pin to 50-pin cable.

Cramolin - We recommend using Cramolin Red on SCSI cable connections. It is a continuity enhancer that makes connections more reliable. It costs about $20 for a 2 oz. bottle, but it’s worth it!

Termination - SCSI drive must supply its own termination power.

Termination is a very important factor especially when you consider all the different units in your SCSI setup with different power supply sources. The Macintosh computers that don’t have hard drives also don’t have termination. Hard drive and computer power supplies introduce noise into a system and this noise confuses the SCSI software. The SCSI software gets confused because it can’t tell what’s noise, what is a ” 1” or what is a “0”. Termination filters out this noise so the software can do its job.

SCSI Terminators - The SCSI terminator is simply a resistor network on each SCSI signal on the

SCSI bus. The terminator prevents reflection or ringing on the signal lines, allowing reliable high speed data transfers.

Warning!

A system configuration (two or more SCSI storage devices) must have two terminators.

Damage can result if more than two terminators are present.

The terminator is either external or internal. The external terminator resembles two 50-pin SCSI connectors mounted back to back and encased in plastic. It is plugged into the SCSI connector of the device and then the‘ SCSI cable is plugged into the terminator. The internal terminator is simply the resistor network, typically as resistor packs on the SCSI device controller circuit board. The documentation that accompanies the SCSI device usually describes the procedures required for installation and removal of terminators. The SCSI installed in the ASR-10 Rack (or the SP-3 SCSI Kit for the ASR-10 keyboard unit) contains internal termination via removable resistor packs (do not remove the resistor packs unless directed by the ENSONIQ Customer Service). Note that the ASR-10 supplies power to its own terminator only. Therefore, any SCSI storage devices used with the ASR-10 must supply power to the SCSI bus.

Error Messages that may appear while you are using the ASR-10 with SCSI

UNCONNECTED SCSI DEV A SCSI device that was detected by the ASR-10 at bootup is no longer connected or turned on.

l

What to do: Check your SCSI connections. If your SCSI drive has a changeable

ID number, make sure it matches the SCSI device number you have chosen in the CHANGE STORAGE DEVICE command.

INVALID LOAD DEVICE No SCSI device with this ID was connected to the network when the

ASR- 10 booted up.

l

What to do: Use the CHANGE STORAGE DEVICE Command to verify that you are using the correct SCSI device number.

74

ASR

Service Manual

SCSI Infomation

NOT AN EPS SCSI DEV The SCSI device selected is not an ASR-10 formatted storage device, and cannot be used by the ASR-10, or a non-ENSONIQ CD ROM is loaded in a connected CD ROM drive.

l

What to do: You may choose to reformat the SCSI drive for use with the ASR-10.

Use caution, as this will erase all previously saved data on the SCSI drive. The CD will work if it is the proper Roland or Akai format.

DISK HAS BEEN CHANGED The disk (or cartridge) has been ejected from the drive since the last time the drive was accessed by the ASR-10.

l

What to do: Reinsert the disk or cartridge, press Load, then Instrument, and continue.

DISK DRIVE NOT READY This message usually occurs when the ASR-10 is trying to access the floppy drive or a removable SCSI drive when there is no disk or cartridge in the drive.

l

What to do: If this message occurs, insert a floppy disk or cartridge in the drive, then use the CHANGE STORAGE DEVICE Command to select the appropriate SCSI ID number (or press Load, then Instrument). This event may take place because of improperly saved files. Refer to the section on Transferring Banks from a Floppy Disk to a SCSI Drive in the ASR-10 SCSI manual.

DRIVE NOT RESPONDING If encountered while using a SCSI storage device, this error may indicate a problem with your SCSI cables. The cable from the ASR- 10 l

Whattodo: to the storage device may be too long, or the system may not have proper termination.

Check all connections and make sure that you are using the correct cables. Make sure you have the proper termination. If this message appears repeatedly while files are being saved to the disk, then it is likely that you are invisibly losing sectors of your disk. Correct the problem before continuing to use the disk.

The main problems that you are likely to encounter are the hard disk problems described above and cable problems. These are some additional recommendations that may eliminate many problems: l

Use the shortest cable possible when connecting SCSI storage devices.

l

Be sure to use proper termination, refer to the SCSI Terminators section of the ASR-10 SCSI manual.

l

If you need to use an extension cable between your ASR-10 and your SCSI storage device(s), use high quality shielded SCSI extension cables only. You should be careful to avoid running SCSI cables across power cables and other sources of powerful electromagnetic fields.

l

It is required that the SCSI storage device supply power to the internal termination in the ASR-10.

Most SCSI storage devices we have tested do provide power to the SCSI bus. Check your SCSI l storage device manual for further information.

Some SCSI storage devices may have their device ID number set internally. The ASR-10’s device ID is always 3. Refer to the SCSI storage device’s manual or manufacturer for more information.

Remember, most of the problems we encounter are with cabling or with systems that are not terminated properly. If you encounter a problem, make sure you have checked these things carefully before assuming that your ASR- 10, SP-3 or your SCSI storage device are at fault.


Digital I/O Information

Digital I/O Information

The ASR-10 must have O.S. EPROMs version 1SOB or higher for an optional DI-10 Digital I/O

Interface board to work.

The optional DI-10 Digital I/O Interface board (S/PDIF) allows the customer to move sound data directly into or out of the ASR-10 without going through additional A/D or D/A conversion. It provides direct

Digital Input and Output connection to and from the ASR-10 using RCA-type connectors. It also can provide direct 44.1 kHz digital audio output of the Main Output mix when the current effect uses a 44.1

kHz sample rate. The Digital Input can be used for direct digital sampling from an external digital audio source at 44.1 or 48 kHz. The Digital Input and Output conforms to the S/PDIF standard.

Note: If you wish to record the 44.1 kHz digital output of the ASR-10 to a DAT recorder, the DAT recorder must be able to record from its digital input at 44.1 kHz. Some older/consumer DAT recorders do not record at 44.1 kHz as a copy protection scheme: these DAT recorders will not record the ASR- 10’s 44.1 kHz digital output.

To check to make sure the unit sees the DI-10 board

1.

Position the unit so that you can see the display, and turn it on.

2 .

Insert the ASR-10 O.S. disk provided with this kit into the disk drive.

3 .

After the unit boots up, press Sample. The display should show REC SRC=INPUTDRY LEFT

4. Press the left arrow button to move the cursor under INPUTDRY.

5. Move the data entry slider all the way up and make sure that the display shows REC

SRC=DIGITAL LEFT. If it doesn’t, turn the unit off and check your cable connections.

Using and Troubleshooting the Digital Output

When the current system sample rate (as determined by the current effect algorithm) is 44.1 kHz, the

Digital Output jack will provide direct 44.1 kHz digital audio output of the MAIN-OUT mix (voices routed to BUSl, 2, or 3). Any voices routed to the AUX 1,2, or 3 busses will not be sent to the Digital

Output. Note that when the current effect algorithm uses a 30 kHz sample rate, the Digital Output is disabled.

To find the sample rate of the currently selected effect algorithm, press the FX Select*FX Bypass button, followed by the Left Arrow button. The display will read either 23 VOICES AT 44 KHZ or 3 1

VOICES AT 30 KHZ.

l l l l

A common use for the Digital Output is to mix-down sequences/songs to a DAT recorder equipped with l a “coaxial” RCA-type S/PDIF digital input jack. Here’s how:

Connect the ASR-10 Digital I/O Output jack to the S/PDF digital input jack of a DAT recorder, using a single RCA-type cable.

Press the FX Select*FX Bypass button. Using the data entry controls, set the current effect to one that uses a 44.1 kHz sample rate.

Set up the DAT recorder (using the instructions that came with the DAT machine) to record the sequence/song. The DAT recorder must be set to SP (standard play) 44.1 kHz.

Press Record on the DAT recorder, then press the Play button on the ASR-10.

When the sequence/song is finished playing, press the Stop buttons on both the ASR-10 and the

DAT recorder.

/o


-

OEX-6sr Information

OEX-6sr Information

The OEX-6sr is a multi-function digital device that adds six individual outputs or three additional pairs of stereo outputs to an ASR-10 Keyboard or EPS-16 PLUS keyboard. The OEX-6sr comes standard on the ASR- 10 Rack. The OEX-6sr enhances the capabilities and flexibility of the ASR- lO/EPS- 16 PLUS.

The power of the OEX-6sr Output Expander lies in its unique configuration: six individual outputs or three stereo pairs (AUX 1, AUX 2, AUX 3). The addition of these outputs allows you to route separate signals for independent processing, or isolate parts for click or monitoring references. Even individual

WaveSamples within an instrument (for instance, the snare and kick drum from a drum kit) can be sent to different outputs for discrete external effects processing (such as with the ENSONIQ DP/4 Parallel

Effects Processor). The design of this product resulted from customer requests for a multi-purpose output device that could be configured with stereo outputs and/or individual outputs.

IMPORTANT! Because the OEX-6sr is a digital device, no audio signal passes through the connector cable from the ASR-lo/BPS-16 PLUS to the OEX-6sr. Do not connect this cable to any other device that uses a similar connector (such as a Macintosh), as this will damage both units and void their warranties.

l l l l l

Important points about the OEX-6sr

Never connect the OEX-6sr while the power to the ASR-lO/EPS-16 PLUS is on. This will damage both units and void their warranties.

The signals sent to AUX 1, AUX 2, and AUX 3 on the OEX-6sr are dry; these outputs do not pass signals with effects. The wet signal is only present at the Main Audio Outputs.

The AUX 1, AUX 2, and AUX 3 outputs on the OEX-6sr are always active when the OEX-6sr is connected.

The Outputs on the OEX-6sr are not affected by the ASR-lO/EPS-16 PLUS master Volume Slider.

Assigning of sounds to the OEX-6sr can be handled two ways; at the WaveSample level or at the track level.

,


NOTES

Composite SIMMs

KEPS

Nylock Screw

PEMs

Scribe

SCSI

SEMs

SIMMS

Termination

Glossan

GLOSSARY

SIMMs that contain more than one size of RAM chip. These SIMMs may also contain GAL (Gate Array Logic) or PAL (Programmable

Array Logic) chips. Do not use these SIMMs in an ASR product.

Nuts with star washers attached

A screw with a patch of nylon on the threads for greater holding power.

Threaded mounting standoff for screws.

An angled tool, useful for disconnecting cables without damaging them.

Small Computer System Interface.

Screws with star washers attached.

Single In-line Memory Module

Termination filters out noise introduced by hard drives or computer power supplies so the noise doesn’t confuse the SCSI software.

Boards

Digital Board

Analog Board

Digital Jack Board

Analog Jack Board

Power Supply Board

Keypad/Display Board

Patch Select/Wheel Board

SCSI Board

OEX-6sr Board

MODULE PART NUMBERS

Kevboard

409OO17OO1/5

409OO17101

409OO17201

409OO17301

409OO17701

409OO17401

409OO17801

4090016901

4090018701

Rack

409OO17002/6

409OO17102

409OO17201

409OO17302

409Oo17702

409OO18801 not used

409OO16901

40900 18702

ASR-88

409OO17010

4090017101

409OO17201

409OO17301

40900 17703

409OO17401

4090016901

4090016901

409OO18701


ENSONIQ Customer Service

Hours:

Parts ordering:

Monday through Friday 9:30 AM to 6:30 PM Eastern Time

Closed for lunch 12:15 PM to 1:15 PM

U.S. 4 l-800-441-1003 (Confidential)

ENSONIQ Fax:

Customer Tech Support:

Canada s 1-514-633-8877 l-610-647-8908 l-610-647-3930”

*This is the phone number to give customers that want to contact ENSONIQ directly (U.S.A).

Use the ENSONIQ Automatic Fax Retrieval System: l-800-257-1439 or l-610-408-0741 outside of the US

When contacting ENSONIQ Customer Service, please have the following information ready:

* Model Number,

* Serial Number,

* Operation System Version

* Warranty Status, and

* Your Purchase Order Number when ordering parts.

Worldwide Headquarters:

155 Great Valley Parkway l

Malvem, Pennsylvania 19355 U.S.A.

In Canada: Kaysound Imports, Inc.

2 165 46th Avenue l

Lachine l

Quebec, Canada HST2P 1

ENSONIQ ASR-10 Service manual

Service Manual

Table

Contents

ASR

IMPORTANT THINGS TO KNOW ABOUT THE ASR-1 O/88

a=SIMMs

DEJYPI WN

)

THE DISK DRIVE

UNIT SOUNDS DISTORTED

Edit,

FUSES

MECHANICAL ISSUES

HOW THE ASR WORKS

TROUBLESHOOTING

li%”

El

ASR-88 KEYBOARD

Replacing the Digital Board

ISECTION I

Replacing the Analog Board

Replacing the Power Supply Board

Replacing the Keypad/Display Board

SECTION

Replacing the Keyboard (ASR-10)

Replacing the Keyboard (ASR-88)

SECTION

Replacing the Digital Jack

Board

Replacing the Analog Jack Board

Replacing the Disk Drive

Replacing the Transformer

SECTION

Replacing the Line Filter

Installing and Removing the SCSI Board

SECTION

Replacing the Digital I/O Option Board

Replacing the O.S. EPROMs

Replacing the Wheel Assembly

Replacing the Rack Digital Board

Replacing the Rack Analog Board

SECTION

Replacing the Rack Power Supply Board

SECTION 1

Replacing the Rack Keypad/Display Board

Replacing the Rack KPC Simulator Board

ISECTION 1

Replacing the Rack Digital Jack Board

Replacing the Rack Analog Jack Board

-

-

Replacing the

Disk Drive

Replacing the Rack Transformer

ISECTION 1

Replacing the Rack Line Filter

Replacing the Rack SCSI Board

SECTION

Replacing the Rack Digital I/O Option Board

Replacing the Rack O.S. EPROMs

Replacing the Rack OEX-6sr Board

SECTION

Replacing the PCB Mounting Bracket

Important Information about SlMMs

Purchasing SlMMs For Your Customer

2 MegaBytes

4 MegaBytes

8 MegaBytes 16 MegaBytes

Figure 31- SIMM

71

SCSI Information

Digital I/O Information

OEX-6sr Information

GLOSSARY

MODULE PART NUMBERS

ENSONIQ Customer Service

Related manuals

Element

EL-155BSH