XEROX 29MB DISK CONSOLE SERVICE MANUAL NOVEMBER

XEROX

OFFICE SYSTEMS OIVISION

29MB DISK CONSOLE SERVICE MANUAL

NOVEMBER,1984

600P84228

PRINTED AT REVISION A

29MB DISK CONSOLE SERVICE MANUAL

600P84228

REVISION A

NOVEMBER 1984

29MB DISK CONSOLE

600PB4228


TABLE OF CONTENTS

List of Illustrations .................... .

CHAPTER 1 GENERAL DATA

11

12

1.3

14

How to Use This Manual .............•..

Model Configurations •.•..••.•.••..•.•.

Call Management .................... .

Change Tag Index .................... . v

1-2

1-2

1-2

1-2

3.7

3.8

3.9

3.10

VFOPWA ............................ .

Control PWA ......................... .

ReadiWrite PWA ..................... .

Damper Assembly .................... .

3-15

3-15

3-16

3-17

CHAPTER 4 PARTS IDENTIFICATION

PL 4. 1

PL 4.2

Pl4.3

29MB Console Mechanical Parts .••..••••

Disk Drive Assembly .................. .

29M8 Console Harnesses ••.•.•.•..••..•

4-2

4-4

4-6

CHAPTER 2 INSTALLATION/REMOVAL

Refer to 8000 Series Reference Manual

CHAPTER 5 DISPLAY QUALITY

Refer to appropriate service manual

CHAPTER 3 REPAIR DATA

3 I

32

3.3

3.3.1

332

3.4

3.5

36

Console Top Cover .................... .

Console Fan ......................... .

29M8 Disk Drive ...................... .

Actuator lock .......•........•........

Spindle lock ........................ ..

29MB Drive Belt ...................... .

29MB Drive Motor ................... ..

Actuator PWA ........................ .

3-2

3-2

3-3

3-10

3-12

3-13

3-13

3-15

CHAPTER 6 TROUBLESHOOTING

6.01

6.02

6.02.1

6.02.2

Introduction ......................... .

Level 2 Check Charts .................. .

29MB Disk Faults ..••.•.•.••.•••••...•.

Disk MP Fault Code .................. ..

Disk Not Ready ...................... ..

No Motor Dri ve ....................... .

6·2

6-3

6·3

6-8

6·9

6-10

iii

TABLE OF CONTENTS

(Continued)

6.023

6024

602.5

6.03

6.03.1

6.04

6.05

6.06

6.07

6.08

6.09

Chain 1.1

No Drive Select ....................... .

Mechanical Isolation .................. . logic Not Ready ...................... . logic Fault ........................... .

Control Fault ......................... .

Track Seek Incomplete ............... ..

Restore Errors ........................ .

Seek Errors ......................... ..

Write Errors .......................... .

Cooling Fan .......................... .

Rigid Disk Drive Loading .•.•••••••••••.•

Block Schematic Diagrams

29MB Disk Console Power Distribution ..•

6-10

6-11

6-11

6-12

6-12

6-13

6-14

6-14

6-16

6-16

6·16

6-19

CHAPTER

8

PRINCIPLES Of OPERATION

Refer to 8000 Series Reference Manual

29MB DISK CONSOLE

6OOP8422B

CHAPTER 7 PLUG/JACK UST

7 1

7.2

7.3

7.4

7.5

Introduction ......................... .

Harness Identification ................. .

PI ugl Jack locations ................... .

Wiring Data ......................... .

Connector Identification .•..•...•.••.••

7-2

7-2

7-2

7-2

7-2 iv

29MB DISK CONSOLE

600P84228

Figure

3-B

3-9

3-10

4-1

4-2

4·3

6-1

6-2

6-3

6·4

6-5

7-1

7·2

7-3

7-4

7-5

3-1

3-2

3-3

3-4

3-5

3-6

3-7


LIST OF ILLUSTRATIONS

Jumper locations for 29M8 Control PWA __

Jumper locations for 29M8 Control PWA __

Jumper locations for 29M8 Control PWA _ •

Jumper locations for 29M8 Actuator PWA.

Jumper locations for 29M8 VFO PWA ••••

Sample of Shugart and Xerox Error Maps.

Rigid Disk Drive or Proce$Sor Software

Preparation Flow Chart •••.••.•.• _ •.•.

Actuator lock Installation .••••••.••••••

29MB Disk Drive Assembly .••••.•••••.•.

Read/Write PWA ..................... .

29MB Console Mechanical Parts ••••...••

Disk Drive Assembly .................. .

29MB Console Harnesses ••.•.••••.•••••

Control PWA (Version AI •••••••••••••••

Control PWA (Version BI •••••••••••••••

Actuator PWA ....................... ..

Test Connector ....................... .

29MB Disk Console Power Distribution •••

29MB Disk Console Plug/Jack Locations ••

29MB Power Cable W20 ............. ..

29MB Signal Cable W21 .............. .

Connector Type B .................... .

Connector Type D .................... .

Page

]·8

]·11

]·12

]·17

4·)

4·5

4·7

6-4

6-5

6-6

6-17

6-19

7·]

7·]

7·4

7·5

7-5

3-4

]-4

]-5

]-5

]-6

]·7 figure

7·6

7·7

7·8

Connector Type H

Connector Type R

Connector Type S

Page

7·5

7·6

7·6 v

29MB DISK CONSOLE

6OOP84228

CHAPTER 1 GENERAL DATA


1. GENERAL DATA

1-1

1. GENERAL DATA

HOW TO USE THIS MANUAL MODEL CONFIGURA nONS CALL MANAGEMENT CHANGE TAG INDEX

HOW TO USE THIS MANUAL

I

This service manual provides information necessary for maintenance of the 29MB Disk Console.

The 8000 Series Reference Manual provides the complete instructIons for use of 8000 Series service manuals.

11.2

MODELCONFIGURAnONS

I

Various models of 8000 Series products are available. The BOOO

Series Reference Manual provides product codes. model configur.ations, and catalog number information, as well as related explanations.

11.3

CALL MANAGEMENT

I

The Call Management procedures are to be performed during every service call. The complete Call Management procedures are provided in the 8000 Series Reference Manual.

29MB DISK CONSOLE

600PB42Z8

11.4

CHANGE TAG INDEX

I

Refer to the BOOO Series Reference Manual for instructions about use of matrix tags and Tag letter Classification definitions.

The 29MB Disk Console has one matrix tag. The matrix tag is located on the bottom frame on the left side of the console. Any important modification of the disk drive, or related cables and connectors, must be indicated on the 29MB Disk Console matrix tag.

1·2

29MB DISK CONSOLE

600PB422B

1.

GENERAL DATA

CHANGE TAG INDEX

CHANGE TAG INDEX FOR 29MB DISK CONSOLE

1

N

2

3

R

225

R

Tag No. Description

Tag 1 moves slide·lock hardware from 29MB Signal Cable to Processor connector panel to prevent improper connection at Processor. Related part is the 29MB Signal Cable 152SB1277

CANCEllED

Tag 3 changes the molded connector hood on 29MB Signal Cable to eliminate interference between cable connector and rear cover. Related part is the 29MB Signal Cable 1525825031.

Tag 225 changes the molded connector hood on 29MB Signal Cable to eliminate interference between cable connector and rear cover. Related part is the 29M8 Signal Cable 152S825031.

Serial No.

Cut-in

T25-lnitial

T25-

131-

T25-

131-

1-4

29MB DISK CONSOLE

600PB422B

CHAPTER 2 INSTALLATION/REMOVAL


REFER TO 8000 SERIES REFERENCE MANUAL

2.

INSTALLATION/REMOVAL

2·'

29MB DISK CONSOLE iOOPB4ZZB

CHAPTER 3 REPAIR DATA


3. REPAIR DATA

3. REPAIR DATA

CONSOLE TOP COVER CONSOLE FAN

1.1

CONSOLETOPCOVER

REF Pl4.1

REMOVAL

\. SWITCH Off SYSTEM POWER.

2

3

REMOVE BOTH CONSOLE SIDE COVERS.

REMOVE CONSOLE TOP COVER. a Remove the six speed nuts securing the Top Cover to frame. b. Remove Top Cover.

REPLACEMENT

1 REPLACE CONSOLE TOP COVER. a. Perform removal procedure in reverse order.

3.2 CONSOLE fAN

REF PL4.1

REMOVAL

1. SWITCH Off SYSTEM POWER.

2

3.

REMOVE CONSOLE REAR COVER.

REMOVE THE CONSOLE FAN. a. Remove screws securing the Fan Cover to frame. b. Remove the Fan Cover. c. Disconnect harness connector from the Fan. d. Remove the Fan from console.

29MB DISK CONSOLE

600P8422B

REPLACEMENT

CAUTION

The Fan must be installed with arrow pointing to rear of wnsole for the correct air flow.

I. REPLACE THE CONSOLE FAN. a. Perform removal procedure in reverse order.

3-2

29MB DISK CONSOLE

600P8422B

3. REPAIR DATA

29MB DISK DRIVE

3.3 29MB DISK DRIVE

REF PL4.2

REMOVAL

NOTE: RX only. References in the following procedures to a call for assistance or report of conditions, should be made to the RX

Technical Specialist.

CAUTION

Drive replacement deletes customer files. This requires restoration of files by customer. BEFORE replacing drive, contact

RES or NSC; then notify customer's System Administrator or

Network Coordinator. Customer MUST be notified

~ replacing rigid drive. It is possible that Systems Analyst will know work around procedure, and drive will not require replacing. If customer will not agree to drive replacement, contact

Systems Analyst for further instructions. NEVER REPLACE DISK

DRIVE WITHOUT FIRST NOTIFYING CUSTOMER AND SYSTEMS

ANALYST.

3.

4.

REMOVE BOTH SIDE COVERS.

INSTALL ACTUATOR LOCK (REPLACEMENT 3.3.1).

5. INSTALL SPINDLE LOCK (REPLACEMENT 3.3.2).

6.

REMOVE 29MB DISK DRIVE a. Disconnect power harness connector from J4 on Disk

Drive Motor. b. Disconnect power harness connector from

13 on

Actuator PWA. c. Disconnect signal harness connector from 11 on the

Control PWA. d. Remove the four bolts securing the Disk Drive to f. frame.

e.

Carefully pull Disk Drive from console.

Remove brackets from Disk Drive.

REPLACEMENT (FIGURES 3-1 TO 3-5, INCLUSIVE)

CAUTION

Jumpers on new Disk Drive must be configured to match old Disk

Drive jumper location BEFORE installation. Several Control PWAs are now in use. Ensure that the correct figure is referred to when verifying the jumper locations.

ENSURE THAT THE CORRECT DISK DRIVE REPLACEMENT

PROCEDURE IS FOLLOWED a. Ensure that RES or NSC is informed. b Customer has approved and understands that disk drive is to be replaced c Systems Analyst has been informed.

SWITCH OFF SYSTEM POWER.

1

INSTALL JUMPERS ON DISK DRIVE PWAs. a. Refer to Figures 3-1 to 3-5, inclusive, and install

Jumpers as shown. b Remove any jumpers not shown in figures.

Add any jumpers necessary, as shown in figures.

3-3

3. REPAIR DATA

FIGURES 3-1, 3-2

J1

-, 5 S

T L

§~ 1111 oTP2

-

T

0

TP1

R I

Y X

5C BC

TP28 0

- 0

0

TP3

0

TP4

- C

TP2ti 0 0

TP1

0 51

S2

1-

TERMINATORCHIPIN5TALLED

~llIllIlg IglI:

Shorting Plug oTP11

5RF gig

TP12 o o

TP13

o

TP18

TP21 o

0

TP22

8010·049

29MB DISK CONSOLE

6OOPB4228 o -

0 0

TP2 T TP28 TP23

J1

_ST dTERMINATORCHIPINSTALLED

-DS1

§~ ~~

0 m

!L":TP=:1:---..I-

TP14 o

r

SHORTING PLUG

TP210 oTPJ2 o

TP22 TP13

_0000

R S F

ISL

TP1 o o

TPl1

BC 8 1 ti 5 9 10 11

SC-~ o~-oo

1 2 3 4

TP1ti L 5 B 0

TP15

TP2ti

0 _

051

52

TP19 o o

TP20 oTP11

8010·050

3·4

Figure 3-1 Jumper Locations for 29MB Control PWA

(Version A)


(Version B)

29MB DISK CONSOLE

&OOP84228 o -

0 0

Tn T TP28 TPU

_RV

_ST c:::::STERMINATOR CHIP INSTALLED

~

-DS1

§I

I

~~

I T'::4

:==::::,..,

SHORTING PLUG

f

TP21 TP12

.

°TP~2

0

9"

J

IsL o TP1

TP7 o

0 m

_0000

R 5 F

8C 8 7 & 5 9 10 11 12

SC-'y0~-ooo

TP17

1 2 J 4

TP1& L S B -

0

TP15

TP2& 0 _ oS1

TP19

0 o TP20

52 cs.

SS

8010-051


(Version C)

3. REPAIR DATA

FIGURES 3·3, 3-4

JJ

000

5 1

·5

-.0

·15 o

TP:I

0

TP5

J8

0

TP&

TP7

0

2

1 o

TP1

8010-052

Figure 3-4 Jumper Locations for 29MB Actuator PWA

3-5

3. REPAIR DATA

29MB DISK DRIVE FIGURE 3·5

CO

_ 0 o

TP4 o

TPB

0 0

TPll TP3 o

TP5 o

TP10 o

TPI o

TP7

8

7 o

1

14 oTpg o

NOTE 1: 6R JUMPER PRESENT ONLY

ON lATER VERSIONS OF VFO PWA.

Figure 3·5 Jumper locations for 29MB VFO PWA

8010·053

29MB DISK CONSOLE fiO0P84228

2.

3.

REPLACE 29MB DISK DRIVE. a. Replace brackets onto new Disk Drive. b. Carefullv install Disk Drive inside console. c. Replace the four bolts securing the Disk Drive to frame. d. Remove spindle lock screw through the access hole in Drive Belt Cover. e. Connect powe, harness connector to J4 on Disk Drive

Motor. f. Connect power harness connector to

PWA.

J3 on Actuator g. Connect signal harness connector to J1 on the

Control PWA.

REMOVE ACTUATOR LOCK (3.3.1).

NOTE: The 29MB Disk Drives have bad page error maps from the

OEM supplier (the Original Equipment Manufacturer of the drove) and Xerox. Refer to Figure 3·6 for a sample of the error map

Refer to Figure software.

3·7 for a flow chart on preparing the drive for

4 CHECK THE AVAILABILITY OF XEROX ERROR MAP. a Remove map from the right side of drive b. locate date on the Xerox error map If dated 11·30·

B2 or before, or the map does not exist, proceed to step 12

29MB DISK CONSOLE

&OOPB422B

OEM ERROR MAP

SA 1004 SCAN ERROR LOG

TRK HD

SERIAL IA36497

BYTE COUNT LENGTH (BITS)

01315 14 078 00

144

03

145 03

02219

02220

15

03

253 03

254 03

03938

03939

01

02

END ERROR LOG

XEROX ERROR MAP

XX Megabyte Storage DevICe

Serial number: A 12102

Dale; 22·Jan·82

8adPage Manual

Page Cyl

HD Sec Table

Entry

3908 017 03

14420 064 03

16

00

X

X

Number of bad pages: 2

Media

Scan

8010·054(1)

Figure 3-& Sample of OEM and XerOJl

Error Maps

3. REPAIR DATA

29MB DISK DRIVE fiGURE 3-&

5.

RUN ALAG AND VERIFY A SUCCESSFUL COMPLETION. a. If ALAG completes successfully, proceed to step 6. b. If ALAG fails while PV Scavenger is running, proceed to step 6. c. If ALAG does not complete and an MP Code other than 1799 is displayed, see

MP Code List. d.

If physical

IJ{J/ame need. forward conuer.ion

Warning.

is displayed on the screen, proceed to step

13. .

CAUTION

The follOWing steps contain instructions that will destroy customer files. DO NOT logon with Analyst plivileges, or perform these steps. unless service manual procedures Instruct you to do so. Performing these e.ercises on Disk Drives containing any customer files will DESTROY All CUSTOMER

INFORMATION.

6. LOGON WITH ANALYST PRIVILEGES. a. Refer to 8000 NS Diagnostics Handbook for detailed instructions.

7. RUN DISK EXERCISER FOR 10 PASSES TO DETERMINE THE

CONDITION OF THE HARDWARE. a. Refer to the 8000 NS Diagnostics Handbook on how to run Disk hemser. b. If an error is· detected other than a Header CRC. label CRC.

Of

Data CRC, perform Levell Checkout in the 8000 Processor Service Manual.

]·7

3.

REPAIR DATA

FIGUREl·7

19M8 DISK CONSOLE

&OOP84228

NO 8adPages

,...----4.:

Are Detected With

Destructive Scan

Bad Pages

Are Detected With

Media Scan

~·B

YES i

'----.tl

YES

:~. Bad Pages On Xerox ;

;: Map and ones From

r----f:::

R~u~n~A~L~.A~GJI"--------r-::==~

.!

Destructive Scan Are

In Bad Page Table

t

8010-047(2)

Figure )-7 Rigid Disk Drive or Processor Software Preparation Flow Chart

29MB DISK CONSOLE

600PB422B

8 c. If no error is detected, or the error is a Header CRC,

Label CRC, or Data CRC, continue with step 8.

RUN DESTRUCTIVE SCAN fOR 2 PASSES, WITH 2 RETRIES. a Refer to 8000 NS Diagnostics Handbook for detailed instructions. b If bad pages are detected while Destructive Scan is running, record and save to use later.

CAUTION

When performing the next step, RESTORE the Bad Page Table.

9

10 fORMAT DISK DRIVE, RESTORING OLD BAD PAGE TABLE. a. Refer to 8000 NS Diagnostics Handbook for detailed instructions.

VERifY BAD PAGE TABlE CONTAINS All PAGES ON

XEROX ERROR MAP AND PAGES RECORDED DURING

DESTRUCTIVE SCAN a. Compare Bad Page Table on the display to Xerox error map, and pages recorded during Destructive

Scan. b If

!!1!

pages are in the Bad Page Table, proceed to step 16.

11. MANUALLY ENTER BAD PAGES NOT IN BAD PAGE TABLE,

12

THEN PROCEED TO STEP 16. a. Refer to 8000 NS Diagnostics Handbook for detailed instructions. b. After entering bad pages, proceed to Step 16.

RUN ALAGAND VERifY A SUCCESSfUL COMPLETION. a. If ALAG completes successfully, proceed to step 13.

3. REPAIR DATA

29MB DISK DRIVE b. If ALAG fails while PV Scavenger is running, continue with step 13. c. If ALAG does not complete and an MP Code other than 1799 is displayed, see MP Code List. d. If

physical volume need. forward <OIiver,ioli

Waming.

is displayed on the screen, proceed to step

13.

CAUTION

The following steps contain instructions that will destroy customer files.

QQ.J!QI logon with Analyst privileges, or perform these steps, unless service manual procedures instruct you to do so. Performing these exercises on Disk Drives containing any customer files will DESTROY ALL CUSTOMER

INFORMATION.

NOTE: If you cannot logon (system locked up), perform an

Alternate Boot 0002, and press the BREAK or STOP key when fault Analysis begins.

13.

14

LOGON ON WITH ANAI.YST PRIVILEGES. a. Refer to 8000 NS Diagnostics Handbook for detailed instructions.

RUN NEW DISK CHECKOUT fOR 10 PASSES TO DETERMINE

THE CONDITION Of THE HARDWARE. a. Refer to the BOOO NS Diagnostics Handbook for detailed instructions.

3·9

3. REPAIR DATA

29M8 DISK DRIVE ACTUATOR LOCK b. If an error is detected other than a Header CRC,

Label CRe, or Data CRC while Destructive Exerciser is running. perform Level 1 Checkout in the 8000

Processor Service Manual

If no error is detected while Destructive Exerciser is running, or the error is a Header CRC, Label CRC, or

Data CRC, continue with next step d When

Do yvu wi."

,<>

Ihi.,ime

(YIN):

,.,wl.,rucll".

bad page lable

al

Y

is displayed, press return. e When Do

you wi.h

10

puto,m a media SL'an (YIN): is displayed, type y and press return.

When Pa •• counl (/

·1000)

/0 is displayed, type 2 and press return. g. When Relr.y

Cvalll

(0·20):

2 is displayed, press return. h. If bad pages are detected while media scan is running, record and save to use later.

If

Du yuu wi.h

10 , •• ,

Ihe bad page. (YIN):

is displayed, type n and press return.

When

Do

you wi.h Iv manually .n/e, bad page.

(YIN):

is displayed, type y and press return. k. If Xerox error map was dated 11·30·82 or before, proceed to step 15.

Select Page Format and enter bad pages from Xerox error map and bad pages detected during media scan. m Proceed to step 16.

15 MANUALL Y ENTER BAD PAGES FROM OEM MAP AND

MEDIA SCAN. a. Refer to the 8000 NS Diagnostics Handbook for detailed instructions.

29MB DISK CONSOLE fiOOP8422B

16. RUN ALAG AND VERIFY A SUCCESSFUL COMPLETION.

17. RETURN ERROR MAPS TO PLASTIC POUCH.

18. REPLACE COVERS.

19. INFORM SYSTEM ADMINISTRATOR TO PARTITION DISK,

INSTALL SYSTEM SOfTWARE, AND RESTORE FILES.

3.3.1 ACTUATOR LOCK

REF PL 4.2

REMOVAL

NOTE: Some 29MB Disk Drives are not equipped with Actuator

Locks. Do not perform procedure if drive is without Actuator

Lock feature. (See PL 4.2 for Actuator Lock part number.)

1

2.

3

SWITCH OFF SYSTEM POWER

REMOVE LEFT SIDE COVER.

REMOVE ACTUATOR LOCK (FIGURE 3·8). a. Disconnect power harness connector from J3 on the

Actuator PWA. b. Switch ON system power.

CAUTION

Do not move Damper Assembly until disk speed has been reached (approximately five seconds after AC power is applied).

Movement of head damage. heads without disk rotation may cause disk or

C.

Wait for disk to reach proper speed.

3·10

29MB DISK CONSOLE

IiOOPB422B d. Remove Actuator Lock from motor and damper assembly by pulling it down. e. Place lock on shelf above Disk Drive. f. Switch OFF system power. g. Connect power harness connector to J3 on Actuator

PWA.

REPLACE LEFT SIDE COVER. 4

REPLACEMENT (Figure 3-8)

NOTE: Some 29MB Disk Drives are not equipped with Actuator

Locks Do nOl perform procedure if drive is without Actuator

Lock feature. (See PL 4.2 for Actuator Lock part number.)

1

2

3

SWITCH Off SYSTEM POWER


INSTALL ACTUATOR LOCK (FIGURE 3-8). a Disconnect power harness connector from J3 on

Actuator PWA b Switch ON system power.

CAUTION

Do not meve Damper Assembly until disk speed has been reached (approximately five seconds after AC power is applied).

Movement of heads without disk rotation may cause disk or head damage. c Wait for disk to reach proper speed. d. Remove dampercover

3. REPAIR DATA

ACTUATOR LOCK fiGURE 3-8

Figure 3-8 Actuator Lock Installation

3-11

3. REPAIR DATA

ACTUATOR LOCK SPINDLE LOCK FIGURE 3·9 e. Rotate damper clockwise, and observe that actuator

t.

arm moves on disk

Wait for arm to stop. g. Install Actuator Lock between damper and star. h. Rotate damper clockwise until lock snaps into position on damper collar. j

Replace damper cover

Switch OFF system power. k

Connect power harness connector to J3 on Actuator

PWA

REPLACE BOTH SIDE COVERS. 4

3.3.2 SPINDLE LOCK

REF PL 4.2

REMOVAL (FIGURE 3·9)

I REMOVE LEFT SIDE COVER.

2 REMOVE SPINDLE LOCK a Remove spindle lock screw through the access hole in drive Belt Cover. b Place lock in storage hole, indicated by the label at bottom of frame.

REPLACE LEFT SIDE COVER.

BELT COVER

29MB DISK CONSOLE

6OOP8422B

SPINDLE LOCK o

0

CONTROLPWA

ACTUATOR LOCK

READIWRITE PWA

8010-056

Figure 3-9 29MB Disk Drive Assembly

3-12

29MB DISK CONSOLE

600PB422B

REPLACEMENT

CAUTION

DO NOT switch ON system power when spindle is locked.

CAUTION

DO NOT rotate spindle in a counterclockwise direction. Disk and heads may be damaged.

4

SWITCH OFF SYSTEM POWER.

REMOVE LEfT SIDE COVER

REMOVE DRIVE BELT COVER.

S

6.

INSTALL SPINDLE LOCK. a. Rotate spindle slowly

In a clockwise direction onlv until hole in pulley aligns with hole in casting. b Remove spindle lock screw from storage hole. c. Insert spindle lock screw and tighten.

REPLACE DRIVE BELT COVER

REPLACE LEfT SIDE COVER.

3.4 29MB DRIVE BELT

REFPL4.2

REMOVAL

1 SWITCH OFF SYSTEM POWER

2 REMOVE LEFT SIDE COVER.

3 REMOVE DRIVE BElT COVER.

3.

REPAIR DATA

SPINDLE LOCK 29MB ORIVE BELT 29MB DRIVE MOTOR

CAUTION

DO NOT rotate spindle in counterclockwise direction. Disk or heads may be damaged.

4. REMOVE DRIVE BELT a. Rotate spindle slowly in a clockwise direction only. and work belt off pulley.

REPLACEMENT

NOTE: Ensure that Drive Belt is installed with part number on outside.

1.

REPLACE DRIVE BELT a. Perform removal procedure in reverse order. b. RunALAG.

3.5

29MB DRIVE MOTOR

REF Pl42

REMOVAL (FIGURE 3·9)

1 SWITCH OFF SYSTEM POWER.

2.

3.

4.


INSTALL ACTUATOR lOCK

DISCONNECT POWER HARNESS CONNECTOR FROM J4 ON

5.

DRIVE MOTOR

REMOVE DRIVE BEl T (3.4).

NOT!: Do not replace Drive Belt Cover.

6. INSTALL SPINDLE LOCK (REPLACEMENT 3.3.2).

3. REPAIR DATA

29MB DRIVE MOTOR

7.

8

REMOVE CAPACITOR fROM BRACKET. a. Place small screwdriver under top edge of capacitor bracket. b. To remove capacitor. carefully apply pressure with screwdriver, and pull on body of capacitor.

REMOVE DRIVE MOTOR. a. Remove Drive Motor connector J4 from bracket. b Remove the two screws securing the motor relay to casting.

NOTE; Ensure that the insulating washers on both sides of mOlOr mounts, are glued to casting or motor.

9

Support the motor while removing the four mounting screws. d Remove Drive Motor assembly from casting.

REMOVE PULLEY. a Loosen the two set screws on Drive Motor pulley. b Remove pulley from motor shaft.

Keep pulley for use with new Drive Motor.

REPLACEMENT

1 REPLACE PUllEY a Align one set screw with flat side of motor shaft, and install pulley onto shaft. b Place 0.035 inch (0.88) shim between outer edges of pulley and motor. c. Move pulley against shim, and tighten set screws. d. Remo.e shim.

29MB DISK CONSOLE

600P8422B

NOTE: Ensure that the insulating washers are on both sides of motor mounts. and that motor does not touch casting.

2. REPLACE DRIVE MOTOR. a. Ensure that there are insulating washers glued to motor mounts or motor. b. Support the motor while threading the capacitor, relay, and power connector J4 through hole in c. casting.

Install the four screws and four insulating washers, but do not tighten.

CAUTION

Do not apply too much torque to screws, or the insulating washers will split. d. Attach ohm meter leads to casting and motor. e. Tighten the four screws and observe meter to ensure f. that motor does not touch casting.

Remove meter leads Irom motor and casting. g. Position relay and replace the two screws securing it to the casti ng h. Install capacitor Into bracket

3. i. Install Drive MOlor connector 14 into bracket.

REMOVE SPINDLE LOCK SCREW AND PLACE IN STORAGE.

4. REPLACE DRIVE BElT (34).

5. CONNECl POWER HARNESS CONNECTOR TO DRIVE

6.

MOTOR CONNECTOR 14.

REMOVE ACTUATOR LOCK (3.3.1).

3-14

29MB DISK CONSOLE

6ooPB422B

7

8.

RUNALAG.

REPLACE BOTH SIDE COVERS

3.6 ACTUATORPWA

REf PL4.2

REMOVAL (fiGURE 3·9)

I SWITCH Off SYSTEM POWER.

2

3

REMOVE LEfT SIDE COVER.

REMOVE DRIVE BELT COVER.

4

CAUTION

Do nol cause any disk movement by moving the drive belt.

REMOVE ACTUATOR PWA a. Remove JB connector from Actuator PWA b. Remove power harness connector from Actuator

PWAJ3.

( Remove the four screws securing PWA to casting. d. Move PWA slightly to left and disconnect pg and Pl0 fromPWA. e. Remove Actuator PWA.

REPLACEMENT (fiGURE 3·4)

1 INSTALLJUMPER ON ACTUATOR PWA. a. ReIer

10 figure 3·4 and install jumper as shown.

2

3.

4

REPLACE ACTUATOR PWA. a Perform removal procedure in reverse order.

SWITCH ON SYSTEM POWER.

RUNALAG.

3.

REPAIR DATA

ACTUATORPWA VfOPWA CONTROLPWA

3.1 VfOPWA

REF PL4.2

REMOVAL (fiGURE

3·9)

1. SWITCH Off SYSTEM POWER.

2. REMOVE LEFT SIDE COVER.

3. REMOVE VfO PWA. a. Release clips securing corners

01

PWA. and remove from mounting studs. b. Disconnect P2 and P3 connectors from VfO PWA.

REPLACEMENT (fiGURE 3·S)

1. INSTALL JUMPERS ON VfO PWA. a. Refer 10 Figure )·5 and install jumpers as shown.

2. REPLACE VfO PWA

3. a. Perform removal procedure in reverse order.


4. RUNALAG.

3.B CONTROL PWA

Ref PL4.2

REMOVAL (fiGURE 3·9)

1.

REMOVE VfO PWA

(3.7).

2. REMOVE CONTROL PWA. a. Remove signal harness connector from 11 on Control

PWA b. Disconnect harness from J7 on Control PWA.

3·15

3. REPAIR DATA

CONTROL PWA READIWRITE PWA c. Remove the four screws securing the PWA to casting. d. Move f'WA to left, and disconnect from ReadlWrite

PWA. e. If Control f'WA is being replaced, remove the two ribbon cables from f'WA.

REPLACEMENT (FIGURES 3-1,3-2,3-3)

CAUTION

Jumpers on new Control PWA must be configured to match old

Control PWA jumper locations BEfORE installation. Several

Control PWAs are now in use. Ensure that the correct figure is referred to when verlf~ing the jumper locations. a.

Refer to Figures 3-1,3-2, and 3-3 and install jumpers as shown. b. Remove any jumpers not shown in figures. c. Add any jumpers nece.sary, as shown in figures.

2 REPLACE CONTROL PWA a. Perform removal procedure in reverse order.

3 SWITCH ON SYSTEM POWER

4

RUNALAG.

3.9 READIWRITE PWA

REF PL4.2

REMOVAL (FIGURE

3-9)

1. REMOVE CONTROL PWA (3.8).

2 REMOVE DAMPER ASSEMBLY COVER.

3. REMOVE READIWRITE PWA.

3-16

29MB DISK CONSOLE

6001'84:128 a. Remove the two screws on left side of ReadlWrite f'WA. b. Remove the six screws from center of ReadlWrite f'WA.

CAUTION

Do not pull held cables through sell. This will reduce slick

Inside the Disk Drive Ind prevent ,ums from moving properl~. c. Carefull~ pull ReadlWrite PWA away from casting enough to reach behind PWA Ind disconnect cables. d. Disconnect cables from component side of

ReadlWrite PWA.

1. If rubber gasket adheres to ReadlWrite PWA, remove and replace around hole in casting.

REPLACEMENT (FIGURE 3·10)

NOTE: Cables are sequentially marked. P20 is at bottom, and

P28 is attop.

1.

REPLACE READIWRITE PWA. a. Ensure that rubber gasket is properly attached around hole in casting. b. Carefull~ connect head cables on new PWA (figure

3·10) c. Push PWA against casting, ensuring that the wires are not caught between f'WA and casting. e. Replace the eight screws securing the ReadlWrite

PWA to casting.

29MB DISK CONSOLE

600PB422B

COMPONENT SIDE

J2B1P2B

6lQ:oooool1

J23/P23

6100 00 0Q]

1

J22/P22

610000001

1

J211P21

610000001

1

J20/P20

610000001

1

Figure 3·10 ReadIWrite PWA

P6

B010·057

3. REPAIR DATA

CONTROL PWA READIWRITE PWA DAMPER ASSEMBLY fiGURE 3·10

2.

3.

REPLACE CONTROL PWA (38)

REPLACE VFO PWA (3 7)

4.

5.

SWITCH ON SYSTEM POWER

RUN AlAG.

6. REPLACE LEFT SIDE COVER

3.10 DAMPER ASSEMBLY

REF Pl4.2

REMOVAL

1.

SWITCH Off SYSTEM POWER.

2.

3.


REMOVE DAMPER ASSEMBLY a. Disconnect power harness connector J3 from

Actuator PWA. b Switch ON system power.

CAUTION

DO NOT mowe Damper Assembly until disk speed has been reached (approximately fiwe seconds after AC power is applied).

Movement of the heads without disk rotation may cause disk or head damage. c Remove damper cower d. Rotate damper counterclockwise until actuator arm is located against the outer stop. e loosen set screw securing the damper and collar to actuator motor shaft. f. Remove damper assembly from shaft.

3·17

3. REPAIR DATA

DAMPER ASSEM8L Y

REPLACEMENT

CAUTION

AC power must be applied while installing Damper Assembly.

1. REPLACE DAMPER ASSEMBLY. a. Ensure that harness connec:tor J3 is disconnected. b Switch ON s~stem power.

Install Damper

Assembl~

NOTE: Ensure that damper and collar are NOT in contact with actuator motor housing.

2

3

4. d. Tighten set screw secunng the damper to actuator motor shaft. e. Replace dampercover. f. Switch Off system power g. Connect power helrness connector to J3 on Actuator

PWA.


RUNALAG.

REPLACE BOTH SIDE COVERS

3-18

21M8 I)tSK CONSOLE

600P84ZZ8

29MB DISK CONSOLE

600PB422B

CHAPTER 4 PARTS IDENTIFICATION


USO/XCONLY

4.

PARTS IDENTIFICATION

4-1

4.


29MB CONSOLE MECHANICAL PARTS

USO/XCONlY

I

4.1

29MB CONSOLE MECHANICAL PARTS

I

ITEM

PART NO.

DESCRIPTION

I 2P81938

2 NSC: 2P820 11

3 127P1275

Cover, Top

Plate, fan Cover fan, Console

4 2581969 Cover, Rear (includes item 13)

5 NSC:30P83957 Bracket, Drive Mounting

6 2581967 Cover, Side (includes item 13)

7 26P80475

8 17P80207

Stud, Castor Locking

Castor, Rear

9 3P1454

10 17P80199

11

12

2581968

NSC: 91P81325

Clip, Quarter Turn Receptacle

Castor, front

Cover, front (includes 12, 13) label,logo

13 601S920

14

15

16

Kit, Quarter Turn Hardware

Stud, Quarter Turn (P/O item 13)

Spring, Ejector (P/O Item 13)

Washer, Nylon (P/O item 13)

17

18 N5C:2P82021

Retainer, Split Ring (P/O Item 13)

8ezel, front Cover

19 NSC:29P80410 Nut, Speed

A 112W39710

B 112W75810

C 20lW21802

D 256W11402

E f

Sems Screw (8-32.7/16)

Sems Screw (1/4-20. 1/2)

Nut (114-20)

Washer (1/4)

Screw (RX only)

Screw (RX only)

NSC: Call the Network Support Center to obtain parts.

D

29MB DISK CONSOLE

6OOP84228

Removal and Replacement 3.1, 3.2

4-2

4.


29MB CONSOLE MECHANICAL PARTS

29MB DISK CONSOLE

600PB422B

IS{INCLUOES

\.14 TO 17

:ij5

14

II

Figure 4-1 29MB Console Mechanical Parts

8000-007121

4-)

4. PARTS IDENTIfiCATION

DISK DRIVE ASSEMBLEY

I

PL 4.2 DISK DRIVE ASSEMBLY

I

9

10

11

12

13

14

15

5

6

7

8

1

2

3

4

ITEM PART NO. DESCRIPTION

99P80929

82P80897

99P80921

99P81093

99P87543

99P81095

99P87509

99P87511

99P81 094

99P87510

NSC: 99P80924

99P80925

NSC: 99P80927

99P81226

Motor. 60Hz Drive

Drive Assembly, 29MB Disk

PWA, Actuator

Harness, C-A

Lock, Actuator (Note 1)

Damper Assembly

PWA, ReadlWrite

PWA,VFO

Harness, C-V

Terminator (RX only)

PWA, Control

Cover,8elt

Bel t, 60Hz Dri ve

Pulley, Belt

Kit, Belt Retainer

USO/XCONLY

29MB DISK CONSOLE

6OOP1422B

A 201W21802

B 256W11402

C 256W I 0902 o It3W23002

E 112W39610 f 113W22402

G 113WI7208

H 259Wl0502

J

I 13W16602

Hex Nut (114-20)

Lockwasher (114)

Lockwasher (No.8)

Screw (8- 32 x 5/8)

Screw (8·32 x

3/8)

Screw (8·32 x 114)

Spindle Lock Screw (4·40 x 3/4)

Spindle lock lock washer (No.4)

Screw (4·40 x 3/8)

NSC: Call the Network Support Center to obtain parts.

NOTE 1: Actuator lock may not be provided on all disk drives.

D

Removal and Replacement 3.1 to 3. 10, inclusive.

4·4

29MB DISK CONSOLE

600P84228

4.


DISK DRIVE ASSEMBLY figure 4·2 Disk Drive Assembly

8000-008(2)

4·5

4. PARTS IDENTifiCATION

29Ma CONSOLE HARNESSES

USO/XCONLY

IPLU 29MaCONSOLEHARNESSES

I

ITEM PART NO.

2

3

4

5

6

7

DESCRIPTION

152525031

152525030

N5C: 19P20514

NSC: 19P20515

152525440

Cable W:U. 29MB Signal (TAGS 3, 225)

Cable W2t. 11MB Signal (alt.)

Clamp. Cable

Clamp. Cable

Block. Cable Tie (PIO item 1)

Cable W20. 29MB Power

Cover. Rear Cable (RX only)

Clamp. Cable (RX only)

29MB DISK CONSOLE

6OOP8422B

A

B

C

o

112W36710

2SBW 1 0902

Screw (B-32 x

7/16)

Lockwasher (No. B)

Screw (RX only)

Screw (RX only)

NSC:

Call the Network Support Center to obtain parts.

29MB DISK CONSOLE

&OOI'B422B

4. PARTS IDENTIFICATION

29MB CONSOLE HARNESSES

Figure 4-) 29MB Console Harnesses

1000-00814'

4-7

29MB DISK CONSOLE

6OOPB422B

CHAPTER 5 PRINT/DISPLAY QUALITY


REfER TO APPROPRIATE SERVICE MANUAL

5. DISPLAY QUALITY

5·'

29MB DISK CONSOLE

600PB422B

CHAPTER 6 TROUBLESHOOTING


6.

TROUBLESHOOTING

6·1

6. TROUBLESHOOTING

INTRODUCTION

I

INTRODUCTION

I

Service Strategy

The ~tep~ required for isolation of faults in the 8000 Network

Sy~tem, are provided in the sequence below. These steps are de~cribed in detail in the 8000 Processor Service Manual.

Instructions for using diagno~tic~ are provided in the 8000

Network Systems Diagnostics Handbook.

Perform Level 01 Trouble~hooting, using the Level 01

Trouble~hooting Flowchart.

2. Perform the Levell Checkout procedure.

3. Perform any Level 2 Check Chart procedures indicated by

4.

Levell Checkout.

usa

only. If necessary, ask for as~istance from the Region

Engineering Specialist (RES) or the Network Support

Center (NSC).

5. RX only. If neces~ary, a~k for assistance from the Technical

Specialist

Information obtained during fault i~olation (in the 8000 Proces~or

Service Manual) may refer you to this manual or other manual~.

U~e the appropriate amount of time (determined by the local

8ranch Manager) to troubleshoot a problem. Then, if a correction cannot be made, a~k for assi~tance.

'·2

29MB DISK CONSOLE

6OOPII4228

29MB DISK CONSOLE

&OOI'B422B

STEP PROCEDURE

1

6.01

29MB DISK FAULTS

I

1. Lower the VFO PWA. The following voltilge5, at the Control PWA. are within tolerance: a.

5.2V b. ·5.2V

TEST

POINT

Control PWA J6

(Figure 6-1)

PinJ

PinE

CORRECT

6. TROUBLESHOOTING

CHECK CHART 6.01

INDICAnON

INCORRECT

CAUTION

When checking the 24V at Pin 22, switch OFF pow.r, .nd connect E·Z

Switch ON power.

hook

meter lead to Pin 221 •• d on the Control PWA (Figure 6-1). c. 24V d.

12V

Pin 22

PinB

Step lb

Step Ie

Step ld

Check Chart 6.02

Step 2

Step 2

Step 2

Step 2

!!!!!!HI

uv

-S.ZV

·UV

UV

Z4V

VOLTAGE TOlEIANCES

I""K_THO

4.I105.i

.... '0·5 .•

·tt.O to·n.o tt.O

'011.0

22.0 .oZ6.0

Pipit,.

Me •• r s,oz toUt

-s,oz to·U8

·11.410·12.1 tt.4

IOU.' n.' tozs.z

6. TROUBLESHOOTING

FIGUREti-1

6-4

0 2

J1

0

4 DS

0

6

S S

T L

11'

1111

oTP2

T

R I

V X

TP210

-

5C IC

_ 0

0

TP1

0

TP3

0 4 6

0 4 1

0

50

- C

TP260 0

TP7

051

52

I~TERMINATOR

I

SHORTING PLUG

~lIllIlIg

1811';'

I

SRF I oTP11 818

TP17

TP19

0 o 0

TP20

0

TP11

TP21 o 0

TP22

TP12

0

0

TP13

TP14

0

0

TP4

0

TP27

- 0

DE

0

TP10

TP15 o 0

TP16

0

TP5

0

TP2)

0 0

TPI

Tpg

DL1

PIN 22

0

TP6

TP25

0

0

TP24

Figure 6-1 Control PWA (Version A)

29MI DISK CONSOLE

600P84221

A 1

I 2

C

C D o

~

P H

OJ

N K

E L

N M

T N

P s

R

I S o

T

E U

V

W

X

V 21

Z

22

E

T

E

8010-014

29M8 DISK CONSOLE

600P84228

-

IX

-RY

-ST

0

-

0 0

TP2 T TP28 TP2)

0 2

0

4

0

6

J1

-OSl

§~

C.

I

¥ '

TERMINATOR CHIP INSTALLED

I

_ 0

DE

0

TP4

TP14

0

_ 0 0 0 0

R

S F

0 4 6

0 4 8

0

50 oTPl

TP21 TP12 o

0 0 0

TP22 TPU

IsL

TP7

0

8C

SC-o

B 7 6 5 9 10 11 12

0 0 _

0

TP17

0

TP16/ 12) 4

L S B -

TP26

0 _ oSl

TP19

0

52

TP20 oTPll

0

TP15

0

TP18

Figure 6-2 Control PWA (Version B)

0

TPS

0

TP27

-

GR

0

TP)

PIN 22

0

TPti

0

TP8

0

Tpg

6. TROUBLESHOOTING

FIGURE 6·2

A 1

B 2

C

D

C E

OF

MH

P

J

OK

N L

E M

N N

T P

R

S S

I T

S

I o

U 0

E

V

E

W

X

Y 21

Z 22

E

T

C

H

E

0

8010-015

6-5

6. TROUBLESHOOTING

FIGURE '·3 o

TP2 o

TP5

JI

TP1 o

201 ..........

1

2

o

TN o

TP1

Figure '·3 Actuator PWA o

TP3

TP40 J9

1010·016

29MB DISK CONSOLE

600P8422B

,.,

29MB DISK CONSOLE

600P84228

STEP PROCEDURE

TEST

POINT

2 D,sconnect C-A (ribbon) Harness connector JB from Actuator PWA. All of the following voltages are within tolerance: a. S.2V b S.2V c S.2V d S.2V e

-S.2V f. 24V

9

24V h

12V

All of the following voltages are within tolerance: a S.2V b -S.2V

24V

Actuator PWA J8

(Figure 6-3)

Pin8

Pin 10

Pin 12

Pin 14

Pin 16

Pin 19

Pin 20

Pin 18

Actuator PW A J3

(Figure 6-3)

Pin 5

Pin4

Pin 1

INDICATION

CORRECT

Replace C-A Harness.

If problem still exists. replace Control PWA.

6.

TROUBLESHOOTING

CHECK CHART 6.01

Step 3

INCORRECT

Replace Actuator PWA Replace 29MB Power

Cable

~

5.2V

-5.2V

-I2V

I2V

2.V

VOLTAGE TOLERANCES

Xerox 6ooT860

•. 8105.6

-4.810-5.6

·11.010-13.0

11.0 10 13.0

22.01026.0

D!Git~1

Meter

5.02105.)8

-5.02 10 -5.)8

-IU 10·U.6

11 .• loU.6

22.81025.2

6-7

6. TROUBLESHOOTING

CHECK CHARTS 6.02

29MB DISK CONSOLE

6OOP84228

INDICAnON TEST

POINT CORRECT INCORRECT STEP

16.02

PROCEDURE

DISK MP fAULT CODE

I

CAUTION

Performing the following steps with P43 connected.to the HSiO PWA will write over. and therefore destro~.

NOTE: When P43 is disconnected from the HSIO PWA, the system cannot determine if there is a 29MB, 42MB, or 10MB Disk Drive installed. Since the 10MB Data Wrap Around test does not require the Disk Drive to be connected this is the test you should select.

Disconnect P43

2!l!lt

from HSIO PWA. Run ALAG.

Upon the completion of Test 0316, press STOP key

Visual on

BOlO

Workstation or BREAK key on Server

Terminal. When the MP reaches 0399, type a d.

When MP reaches 0799, type an s then 31, then press return. Test ran successfully IMP

=

0799).

2. Connect P43 to HSIO PWA. Locate the original MP

Code from the list below, and access the specified

Check Chart. a. 1611 to 1618, inclusive b. 1631 to 1636, inclusive c. 1641 to 1643, inclusive d. 1671 or 1672 e.

1713 f. 1741,1742, or 1791 g. None of the above

Visual

Step 2

Check Chart 6.02. 1

Check Chart 6.04

Check Chart 6.05

Check Chart 6.03

Check Chart 6.06

Check Chart 6.07

See MP Code List in Processor Service Manual

Replace HSIO PWA

'·8

29MB DISK CONSOLE

6DOP8422B

PROCEDURE

STEP

1

6 .02.1 DISK NOT READY

I

D(lve Motor is running.

TEST

POINT CORRECT

Visual

Visual

Step 2

Step 3 DISk is spinning.

NOTE: Use Logic Probe 600T1S80 for all measurements.

Verify that DS jumper is in the correct location at

DS I, then logon using xerox and cinos for name and password. Enter the Isolation Tools. Select

Drive Select· Dynamic - frequency: 1000. Logic

Probe indicates pulses.

Control or 6-2)

PWA

NOTE: Test selected in Step 3 should still be running while performing Step 4.

DS

Jumper (Figure 6-1

Step 4

4 Measure the Control PWA jumper RY. Probe indicates pulses.

Control PWA RY

Jumper (Figure 6-1 or 6-2)

StepS

Measure HSIO PWA. Probe indicates pulses.

6. DISconnect PI from Processor Connector Panel J2 and J1 from the Control PWA. 29MB Signal Cable has continuity.

HSIO PWA J43-22 Replace HSIO PWA

29MB Signal Cable Step 7

JI-FtoPI-12

6.

TROUBLESHOOTING

CHECK CHART 6.02.1

INDICATION

INCORRECT

Check Chart 6.02.2

Check Chart 6.02.4

Check Chart 6.02.3

Check Chart 6.02 S

Step 6

Replace 29MB Signal

Cable

6·9

6. TROUBLESHOOTING

CHECK CHARTS 6.02.1, 6.02.2, 6.02.3

29MB DISK CONSOLE

6OOP8422B

STEP PROCEDURE

NO MOTOR DRIVE

I

1. Voltage at Drive Motor is as follows:

USO. 10llo 127VAC

~.

193 to 264 VAC

1

6 .

02 .3 NO DRIVE SELECT

I

Press STOP on BOlO Workstation or BREAK on

Server Terminal. Select Drive Seled - Dynamic -

Frequency 1000. Measure HSIO PWA with Logic

Probe 600T1580. Probe indicates pulses.

TEST

POINT

Drive Motor J4-1 to Replace Drive Motor

3

HSIOPWAJ43-26

CORRECT

7 Disconnect J43 from HSIO PWA. 29MB Interface

Harness has continuity.

29MB Interface Har· Replace in order: ness J2-12 to J43-22 Control PWA

HSIOPWA

Step 2

Disconnect PI from Processor Connector Panel J2 and J1 from the Control PWA. 29MB Signal Cable has continuity.

Disconnect J43 from HSIO PWA. 29MB Interface

Harness has continuity.

29MB Signal Cable Step 3

J1-JtoPI-16

29MB Interface Harness J2-16 to J43-26

Replace in order:

Control PWA

HSIOPWA

INDICATION

INCORRECT

Replace 29MB Interface

Harness

Check the 29MB Power

Cable; replace bad cable

Replace HSIO PWA

Replace 29MB Signal

Cable

Check 29MB Interface

Harness connector for loose pins; replace bad harness

6-10

29MB DISK CONSOLE

600PB422B

STEP

TEST

POINT CORRECT

6.

TROUBLESHOOTING

CHECK CHARTS 6.02.4. 6.02.5

INDICATION

INCORRECT PROCEDURE

MECHANICAL ISOLA TlON

I

Verify that Spindle Lock Screw and Actuator Lock

are removed

Visual Step 2 Remove Lock Screw and

Actuator Lock (Procedures 3.3.\ and 3.32)

Tighten or replace pulley Verify that pulley iscorrectly installed. Visual Step3

Verify that Drive Belt is correctly installed. Visual Install Drive Belt Replace in order:

Control PWA

HSIOPWA

1

6.

02 .5 LOGIC NOT READY

I

NOTE: Lower the VFO PWA to access the Control PWA. Place two sheets of paper under VFO PWA to prevent an electrical short from

PWA to disk console frame

I. Measure the Control PWA with logic Probe

600T1580. Probe shows a high indication.

Control PWA TP 8

(Figure 6-\ or 6-2)

Replace in order:

R/WPWA

Control PWA

If problem still exists. call for assistance.

Replace Control PWA

6-11

6. TROUBLESHOOTING

CHECK CHARTS 6.0), 60.).1

STEP

PROCEDURE

1

6.0)

LOGIC FAULT

I

TEST

POINT

Measure the Control PWA with Logic Probe

600T1580. Probe shows a high indication.

Control PWA TP 21

(Figure 6-1 or 6-2)

CORRECT

Check Chart 6.03. 1

29MB DISK CONSOLE

600PB4228.

INDICATION

INCORRECT

Replace in order:

R/WPWA

Control PWA

If problem still exists, call for assistance.

1

6 .0 ).1 CONTROL FAULT

I

Run Fault Analysis. After an MP Code is displayed,

LogiC Probe 600l 1580 shows a low indication.

Control PWA TP 22

(figure 6-1 or 6-2)

Step2 Replace in order:

R/WPWA

Control PWA


Check Chart 6.02.1

Measure the Control PWA with Logic Probe,

600T1580. Probe shows a high indication

Measure the Control PWA with Logic Probe,

600T1580. Probe shows a low indication.

Control PWA TP 12

(figure 6-1 or 6-2)

Control PWA TP 13

(figure 6-1 or 6-2)

Step 3

Step 4

Replace in order:

R/WPWA

Control PWA


6-12

29MB DISK CONSOLE

6DDP84228

6.

TROUBLESHOOTING

CHECK CHARTS 6.03.1,6.04

INDICATION

STEP PROCEDURE

TEST

POINT CORRECT

4. Measure the Control PWA with Logic Probe Control PWA Jl·30

600T1580. Probe shows a low Indication. (Figure 6·1 or 6·2)

Disconnect PI from Proce.sor Connector Panel J2 29MB Signal Cable and Jl from the Control PWA. 29MB Signal Cable Pl·34 to Il·U has continUity.

6 Disconnect J43 from HSIO PWA. 29MB Interface 29MB Interface Har·

Harness has continuity ness J2·34 to J43·44

Replace HSIO PWA

Step 6

Replace Control PWA

StepS

INCORRECT

Replace 29MB Signal

Cable

Check 29MB Interface

Harness connector for loose pins; replace bad harness

16.04 TRACK SEEK INCOMPLETE

I

Enter the Isolation Tools Select Step Pulses •

Frequency 1000 • Inward. Measure SC Jumper on the Control PWA with Logic Probe 600T1580.

Probe shows pulsing indication.

Control PWA SC

Jumper (Figure 6·1 or 6·2)

Step 2 Replace in order;

Actuator PWA

C·A Harness

ControlPWA

HSIOPWA

NOTE; Test selected in Step 1 should still be running while performing Step 2.

Measure C Jumper on the Control PWA with Logic

Probe 600T1580. Probe shows pulsing indication.

Control PWA C

Jumper (Figure 6·1 or 6·2)

Step 3 Replace Actuator PWA

6·13

6. TROUBLESHOOTING

CHECK CHARTS 6.04. 6.05

29MB DISK CONSOLE

600P8412B

INOICATION

STEP PROCEDURE

TEST

POINT CORRECT INCORRECT

NOTE: Test selected in Step 1 should still be running while performing Step 3.

HSIO PWA J43·8

16.05

Measure HSIO PWA with Logic Probe 600T1580.

Probe shows pulsing indication

RESTOREERRORS

I

Enter the Isolation Tools Select Step Pulses •

Frequenc~

1000 • Outward When test stops. logic Probe 600T1580 shows a high indication

(heads at track 00).

Measure Actuator PWA with Logic Probe

600T 1580 Probe shows a high indication.

Actuator PWA J 1 ()'1

(figure 6·3)

Actuator PWA TP3

(Figure 6·3)

Replace HSIO PWA

Step 2

Replace 29M8 Signal

Cable

Check Chart 6.6

Replace in order:

ControlPWA

Actuator PWA

HSIOPWA


Replace Actuator PWA.


6·14

29MB DISK CONSOLE

600P84228

STEP

16.06

TEST

POINT PROCEDURE

SEEK ERRORS

I

Enter the Isolation Tools. Select Step Pulses •

Frequency 1000· Inward. Measure Actuator PWA with logic Probe 600T1580 Probe shows a high indication, pulsing low.

Actuator PWA TPS

(figure 6·3)

Verify that heads are moving. (Repeat Step I, selecting Outward, if necessary.)

Visual

CORRECT

Step 2

6.

TROUBLESHOOTING

CHECK CHART 6.06

INDICATION

INCORRECT

Step 4

Original MP code was 1713. Visual

4

Measure the Control PWA with logic Probe

600T1580. Probe shows pulsing indication.

Control PWA )1·26

(figure 6·1 or 6·2)

Step 3

Replace in order;

ControlPWA

Actuator PWA

HSIOPWA

C·A Harness

29MB Signal Cable

Damper Assembly


Replace in order:

ControlPWA

C·A Harness

Actuator PWA

Replace Actuator PWA.


Replace in order;

Actuator PWA

Damper Assembly


StepS

6·15

6. TROUBLESHOOTING

CHECK CHARTS 6.06, 6.07, 6.08, 6.09

29MB DISK CONSOLE

600PB4228

INDICATION

STEP

PROCEDURE

TEST

POINT CORRECT INCORRECT

Measure HSIO PWA with Logic Probe 600Tl580.

Probe shows pulsing indication.

HSIO PWA J43-36 Replace 29MB Signal Replace in order:

(Harnessconnected) Cable HSIO PWA

29MB Signal Cable

16.07 WRITEERRORS

I

16.08

Run fault Analysis. When 1740 is on the MP, measure Write Data Pattern on Control PWA with

Logic Probe 600Tl580. Probe shows data flow

(High lamp lit steady, and Low lamp pulsates).

COOLING FAN

I

16.09

Voltage at fan is as follows:

USO. 10310 127 VAC

~

RIGID DISC DRIVE LOADING

I

Connect J1 to rear of Processor and disconnect 13 from Actuator PWA. Voltage in questIon is within tolerance.

Control PWA TP17

(figure 6-1 or 6-2)

Replace in order:

RlWPWA

VfOPWA

HSIOPWA fan Connector P2-1 t02

Test Connector to RTN

Replace fan

Step 2

Replace in order:

ControlPWA

HSIOPWA

29MB Signal Cable

Replace 29MB Power

Cable

Replace 29MB Power

Cable.

6-16

29MB DISK CONSOLE

600P8422B

STEP PROCEDURE

TEST

POINT

S.2V

CORRECT

RETURN

-S.2V

24V

-12V

12V

Figure 6-4 Test Connedor

8010-009

6.

TROUBLESHOOTING

CHECK CHART 6.09 FIGURE 6-4

INDICATION

INCORRECT

2. Connect)3 to Actuator PWA. Disconnect)8 from Test Connector

Actuator PWA. Voltage in question is within to RTN tolerance.

3. Connect )8 to Actuator PWA. Disconnect)7 from Test Connector the Control PWA. Voltage in question is within to RTN tolerance.

Step 3

Step 4

Replace Actuator PWA

Replace C-A Harness

6-17

6. TROUBLESHOOTING

CHECK CHAR".09

STEP PROCEDURE

TEST

POINT

4. Connect J7 to the Control PWA. Disconnect right Test Connector hand C·V (ribbon) Harness from bottom of the to RTN

Control PWA and 16 from the Control PWA.

Voltage in question is within tolerance.

S Connect C·V (ribbon) Harness to the Control PWA. Test Connector

Disconnect 12 from VFO PWA. Voltage in question to RTN is within tolerance.

6 Connect 12 to VFO PWA. Voltage in question is Test Connector within tolerance. to RTN

Connect 16 to the (ontrol PWA. Voltage in ques· Test Connector tion is withon tolerance. to RTN

CORRECT

StepS

29MB DISK CONSOLE

600PB4228

INDICAnON

INCORRECT

Replace Control PWA

Step 6

Step 7

Return to Level 1

Replace C-V Harness

Replace VFO PWA

Replace RJW PWA

VOltage

5.2V

·S·2V

·UV

UV

24V l!OLTAGf TOLERANCES

Xerox 6ooT86O

4.8 IOU

·4.810-5.6

-1I.01o·n.O

1t.0 10U.0

22.01026.0

Digital Meter

5.02 105.)'

·5.0210-5.)8

-11.4 10 -\2.6

1t.4 10 12.6

22.8 1025.2

6·18

29MB DISK CONSOLE

600P84228

6. TROUBLESHOOTING

29MB DISK CONSOLE POWER DlSTRIBUnON FIGURE 6-5

3

A

2

_lpROC]

B D E F G H

C

1

2

,

4 - : - -5.2V

1 -.;.... 24V

5

-!...

24VRTN

:

:

i

5.2V

I

21MB OISII CONSOLE liMB DISK ORIVI ASSIMBLY . PL 4.2

I

CONTROLPWA

PL4.a

·1

ACTUATORPWA·PU.2

~(-!->

+--,- ]

.2

I

6

4

I

~ y

I

I

JJ

E:1

J8 7.'

/T

I1.U

»-------~:

I

I i

1.

1'.20

\[1

.,10

I

4---!7-

7.'

I I

++

--T--:-

I1.U

16 n.14

- - ' - - - l n.14

-i-"H~-+-

~,

~

....

4\>---+-

I I

-+--+-

1.10

I

I I

I

-+--+-

1'.20

-#

11

I

I

I

~

I

10

12

I

-t-

ACH

--fT-i-+---..

~

I

,

--I+-++~\

P4

ORIVIMOTOR

PU.2

RIAO/WRITf

'WA·PL4.2

F.K

1.21

--.--

I

I

- + -

I

- + -

I

--.--

I

-I...-

I

-I...-

1·7

11

PTC

I

I

I

I

I

I

P2

8·10 - . -

I

1-7

I

I -.-

I

- 1 -

11

12

CONSOLfFAN

PU.l liMB DISK CONSOLE

POWIR OISTIUlUTION

CHAIN 1.1

801D-048

Figure 6-5 Chain 1.129MB Disk Console Power Distribution

6·19

29M8 DISK CONSOLE

600'84228

CHAPTER 7 PLU6IJACK LIST


7. PLU6IJACK LIST

7·'

7. PLUGI JACK LIST

INTRODUCTION HARNESS IDENTIFICATION PLUG/JACK LOCATIONS WIRING DATA CONNECTOR IDENTIfiCATION

29MB

DISK CONSOLE

600P8422B

INTRODUCTION

I

Harnesses for the 29MB Disk Console are each identified with an alphanumeric code (WOO). These harness codes are defined in

Section 7.2. The codes are used on plug/jack location diagrams.

In Section 7 3, a plug/jack location diagram (Figure 7·1) is provided to show actual locations of plugs and jacks. Each plug/jack is identified by harness code and plug/jack name.

Section 7.4 provides illustrations of the wiring data for each harness. The wiring data illustrations (Figures 7·2 and 7·3) use letter codes, within a hexagonal symbol, which identify related connector diagrams.

Pin location diagrams for various types of connectors are provided in Section 7.5. The diagrams (Figures 7·4 to 7·8, inclusive) show pin side view of the connectors.

/7.2 HARNESS IDENTIfICATION

I

W20 29MB Power Cable

W21 29MB Signal Cable

/7.)

PLUG/JACK LOCATIONS

1

Refer to Figure 7·1 for illustration of plug/jack locations and identification.

17.4

WIRING DATA

1

Refer to Figures 7·2 and 7·3 for illustrations of the wiring data for each harness.

/7.5

CONNECTOR IDENTIfiCATION

I

Refer to Figures 7·4 to 7·B, inclusive, for pin location diagrams for various types of connectors used on harnesses. The diagrams show pin side view of connectors.

7·2

7. PLUG/JACK LIST

PLUG/JACK LOCATIONS WIRING DATA· W20

29MB DISK CONSOLE

&00P84228

W20-J4/MOT J4

W21-JIlCONTROL PWA JI

W21-PI/WI4-J2 (PROCESSOR)

W20-PI/WI4-JI (PROCESSOR)

W20-PI/EI W21-PI/EI

8000-0811111

ACTUATOR PWA

PROCESSOR

CONNECTOR

PANEL

~ o o

....;...- 2

....;...- 3

....;...- 4

....;...- 5

....;...- &

UVRTN

·5.~V

RTN

-5.2V

5V

5V RTN

.Jl.

2.....!-

J .....!-

4 .....!-

5 .....!-

&

.....!-

I

I

T8TIE!

I

I

I

~

I

I

I

-+-

12 ACN o

_ _ _

DISK DRIVE

MOTOR

3

-4-

4 -

I

I

I

I I

...!.-10~ ~1..L

,~

G

~

0

8010·038

7·)

Figure 7·1 29MB Disk Console PluglJa(k LQ(8tions Figure 7·2 29MB Power cable· W20

7. PLUG/JACK LIST

WIRING DATA· W21

CONTROLPWA

EDGE CONNECTOR

@ @

PROCESSOR

CONNECTOR

PANEL

-1J-

----'-

I

- - + -

- . -

-.-

----

--!-

-.L

4

I

A

5 + - 3

6 - ' - C

- l - 4

8

-,.-

10-!-

D

E

- + -

11-+-

6

----'- 12 - ' -

13--L

~

- + - 1 5 + - 8

--+-

16

-+-

J

~17+- 9

----'- 19 ---'-- 10

--!-

20 - l -

L

- + - 21

--+-

.

I

2

3 -+-

2

7

22

--.--

-t-

-l-

8

----'- 9 - ' - 5

-+-

-+-

F

7

H

II

M

-l-12

- + - 24 + - N

-

13

JI

I

I

I i i

I

I

I i i

I

I

I

I i

I

I

I

I

I

I

I

I

I

I

I i

I

I

I

.

.

--+--

18

-+-

K

I

I

I

I

18

-t-

I

I

I

I

I

.

~I

I

I

I i

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

,

I

I i i i

•

•

·

I

2

5

6

--'--

I

3 -<--

4

- - T -

•

-t-

7 -+--

8 + -

9

--'--

10

-+--

I I + -

12

.It-

-t-

13 --'--

14~

IS+-

16

- 0 - -

17+-

19 -'--

20~

21 + -

22 -<--

23 + -

24+-

25 -'--

29MB DISK CONSOLE

600P84228

CONTROL PWA (Cont.)

EDGE

CONNECTOR

J1

(Cont.)

--+-

--+--

I

- . - 26 -,.- P

27

-+-

14

~28

-+-29 +-15

31 - - 16

32 + -

33

-+-

T

17

---+-

34

- 0 -

U

~35+-18

----'- 36 - ' -

V

--L

37...l- 19

--!-

39 - l - 20

-+-40 + X

----'- 41 ---'-- 21

~42-l-

Y

PROCESSOR

CONNECTOR

@ @

PANEL (Cont.)

JI

I

I

I

.

I

.

.

. .

29

I

- - T -

--+--

30

-+-

5 i

I

30+-

I

I

I

I

I

I

I

I

I

I

I i

I

I

.

I

:

.

~I

I i

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

26.It-

27

-t-

28j--

31

-t-

32 -+--

B + -

34

-t-

3 5 -

36+-

37

-t-

39 --'--

40~

41 + -

42

- 0 - -+-

43

-+-

22

I

I

I

43+-

---+-

44

- 0 -

Z

--L

45

-!-

23

-+-46

-+a

----'- 47 - ' - 24

--!-

48 - l b

- + - 49 + - 25

----'- 50 - ' -

(

.J

I

I

I

I

I

I

I

I

I

44-t-

45 --'--

46~

47+-

48-<--

49+-

I

I i

50+-

E~38-'--

I

18010·039

7·4 Figure 7·3 29MB Signal Cable· W21

7. PLUG/JACK LIST

CONNECTOR IDENTifiCATION TYPES I, C, H

29MB DISK CONSOLE

6OOP84221

0 figure 7·4 Connector

Type 1

8010-040

E)

0

E)

0

Figure 7·5 Connector Type D

8010-041

0

000

000

000 sse

0

0

8010·042

Figure 7·6 Connector Type H 7·5

7. PLUG/JACK LIST

CONNECTOR IDENTlflCA nON TYPES R. S

Figure 7· 7 Connector Type R

7·6 o

Figure 7·8 Connector Type 5

8010·044

29MB DISK CONSOLE

600P84228

29M8 DISK CONSOlE

6OOP84228

CHAPTER 8 PRINCIPLES Of OPERATION

19MB DISK CONOSLE SERVICE MANUAL

REFER TO 8000 SERIES REFERENCE MANUAL

8. PRINCIPLES Of OPERATION

8-1

Use this

Comment

Sheet to assist in identification of errors or needed improvements in this manual.

For specific errors, include specific page number in the report.

Detach

Comment

Sheet, and mail the

:ard to the printed address on the reverse iide.

Name

29MB Disk Console Service Manual- 600P84228 - Nov. 1984. Rev. A

Job Title Employee No.

Mailing Address

Page/Fig.No. Description of Error or Improvement receive an answer, mark this area. Include name. and mailing address bove.

111111

NO POSTAGE

NECESSARY

IF MAILED

INTHE

UNITED STA TES

BUSINESS REPLY MAIL

FIRST CLASS Permit No. 229 EI Segundo, California

POSTAGE Will BE PAID BY ADDRESSEE

XEROX CORPORATION

OS Service Education

701 S. Aviation Blvd.

MSN107

EI Segundo, California 90245

Attn: Manager, OS Service Education

Pre

.

pared by

:

Xerox Corporation

Office Systems Division

Customer Service

.

Service Education

701 S. Aviation Blvd

.

EI Segundo, California 90245

Copyright

@

XEROX® and 8000 are trademarks of XEROX CORPORATION

Printed in U

.

S

.

A.

)

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