Sony | MDS-JB920 | User's Manual | Sony MDS-JB920 User's Manual

MDS-JB920
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
Model Name Using Similar Mechanism
U.S. and foreign patents licensed form Dolby Laboratories
Licensing Corporation.
MDS-JE520
MD Mechanism Type
MDM-5A
Optical Pick-up Type
KMS-260A/J1N
SPECIFICATIONS
System
Disc
Laser
Laser output
Laser diode properties
Revolutions (CLV)
Error correction
Sampling frequency
Coding
Modulation system
Number fo channels
Frequency response
Signal-to-noise retio
Wow and flutter
MiniDisc digital audio system
MiniDisc
Semiconductor laser (λ=780nm)
Emission duration: continuous
Less than 44.6 µW*
* This output is the value measured at a
distance of 200 mm from the objective lens
surface on the Optical Pick-up Block with 7
mm aperture.
Material: GaAIAs
400 rpm to 900 rpm
Advanced Cross Interleave Reed
Solomon Code (A CIRC)
44.1 kHz
Adaptive Transform Acoustic Coding
(ATRAC)
EFM (English-to-Fourteen Modulation)
2 setero channels
5 to 20,000 Hz ±0.3 dB
Over 100 dB during playback
Below measureble limit
Inputs
jack
type
LINE (ANALOG) phono
IN
jacks
input
impedance
Rated
input
47 kilohms
500 mVrms 125 mVrms
DIGITAL
OPTICAL IN1
Square
Optical wave
optical
length:
connector 660 nm
jack
DIGITAL
OPTICAL IN2
Square
Optical wave
optical
length:
connector 660 nm
jack
DIGITAL
COAXIAL IN
Phono
jack
75 ohms
Minimum
input
—
—
—
—
0.5 Vp-p
±20%
—
Outputs
jack type
Rated output
Load impedance
Stereo
phone jack
28 mW
32 ohms
LINE (ANALOG) Phono
OUT
jacks
2 Vrms
(at 50 kilohms)
Over
10 kilohms
DIGIRAL
OPTICAL OUT
Square
optical
connector
jack
–18 dBm
Optical wave
length:
660 nm
DIGITAL
COAXIAL OUT
Phono
jack
0.5 Vp-p
(at 75 ohms)
75 ohms
PHONES
MINI DISC DECK
MICROFILM
General
Power requirements
Supplied accessories
Where purchased
Power requirements
Continental Europe and UK
220 – 230 V AC, 50/60 Hz
U.S.A and Canada
120 V AC, 60 Hz
Audio connecting cords (2)
Optical cable (1)
Remote commander (remote) RM-D17M (1)
R6 (size-AA) batteries (2)
Design and specifications are subject to change without notice.
Power consumption
18 W
Dimensions (approx.) (w/h/d) incl.projecting parts and controls
430 × 107.5 × 287 mm
(17 × 41/4 × 113/8 in)
Mass (approx.)
4.8 kg (10 lb 9 oz)
SELF-DIAGNOSIS FUNCTION
The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes
which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the
following box in the instruction manual. For details on how to check error codes during servicing, refer to the following “Procedure for
using the Self-Diagnosis Function (Error History Display Mode)”.
Procedure for using the Self-Diagnosis Function (Error History Display Mode).
Note: Perform the self-diagnosis function in the “error history display mode” in the test mode. The following describes the least required procedure. Be
careful not to enter other modes by mistake. If you set other modes accidentally, press the MENU/NO button to exit the mode.
≠
± knob
≠
1. While pressing the [ AMS ]
± knob and [ ]
p button, connect the power plug to the outlet, and release the [ AMS ]
and [ ]
p button.
± knob and when “[Service]” is displayed, press the [YES] button.
≠
2. Rotate the [ AMS ]
± knob and display “ERR DP MODE”.
≠
3. Rotate the [ AMS ]
4. Pressing the [YES] button sets the error history mode and displays “total rec”.
≠
± knob.
5. Select the contents to be displayed or executed using the [ AMS ]
≠
6. Pressing the [ AMS ]
± knob will display or execute the contents selected.
≠
7. Pressing the [ AMS ]
± knob another time returns to step 4.
8. Pressing the [MENU/NO] button displays “ERROR DP MODE” and exits the error history mode.
9. To exit the test mode, press the [REPEAT] button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends.
–2–
Items of Error History Mode Items and Contents
Selecting the Test Mode
Display
Details of History
total rec
Displays the recording time.
Displayed as “rππππππh”.
The displayed time is the total time the laser is set to the high power state.
This is about 1/4 of the actual recording time.
The time is displayed in decimal digits from 0h to 65535h.
total play
Displays the play time.
Displayed as “pππππππh”. The time displayed is the total actual play time. Pauses are not counted.
The time is displayed in decimal digits from 0h to 65535h.
retry err
Displays the total number of retries during recording and number of retry errors during play.
Displayed as “rππ pππ”.
“r” indicates the retries during recording while “p” indicates the retry errors during play.
The number of retries and retry errors are displayed in hexadecimal digits from 00 to FF.
total err
Displays the total number of errors.
Displayed as “total ππ”.
The number of errors is displayed in hexadecimal digits from 00 to FF.
err history
Displays the 10 latest errors.
Displayed as “0π E@@”.
π indicates the history number. The smaller the number, the more recent is the error. (00 is the latest).
@@ indicates the error code.
≠
±
Refer to the following table for the details. The error history can be switched by rotating the [ AMS ]
knob.
er refresh
Mode which erases the “retry err”, “total err”, and “err history” histories.
When returning the unit to the customer after completing repairs, perform this to erase the past error history.
≠
± button and “er refresh?” is displayed, press the [YES] button to erase the
After pressing the [ AMS ]
history.
“Complete!” will be displayed momentarily.
Be sure to check the following when this mode has been executed.
• The data has been erased.
• The mechanism operates normally when recording and play are performed.
tm refresh
Mode which erases the “total rec” and “total play” histories.
These histories serve as approximate indications of when to replace the optical pickup.
If the optical pickup has been replaced, perform this operation and erase the history.
≠
± button and “tm refresh?” is displayed, press the [YES] button to erase the
After pressing the [ AMS ]
history.
“Complete!” will be displayed momentarily.
Be sure to check the following when this mode has been executed.
• The data has been erased.
• The mechanism operates normally when recording and play are performed.
Table of Error Codes
Error Code
E00
E01
E02
Details of Error
No error
Error Code
E05
Details of Error
FOK has deviated
Disc error. PTOC cannot be read
E06
Cannot focus (Servo has deviated)
(DISC ejected)
E07
Recording retry
Disc error. UTOC error
E08
Recording retry error
(DISC not ejected)
E09
Playback retry error
E03
Loading error
E04
Address cannot be read (Servo has deviated)
(Access error)
E0A
–3–
Playback retry error (C2 error)
SECTION 1
SERVICING NOTES
TABLE OF CONTENTS
1.
SERVICING NOTES ............................................... 4
2.
GENERAL ................................................................... 11
3.
DISASSEMBLY ......................................................... 14
4.
TEST MODE .............................................................. 18
5.
ELECTRICAL ADJUSTMENTS ......................... 23
6.
DIAGRAMS
6-1.
6-2.
6-3.
6-4.
IC Pin Function Description ...........................................
Block Diagram – SERVO Section – ...............................
Block Diagram – MAIN Section – .................................
Note for Printed Wiring Boards and
Schematic Diagrams .......................................................
Printed Wiring Board – BD Section – ...........................
Schematic Diagram – BD Section (1/2) – ......................
Schematic Diagram – BD Section (2/2)– .......................
Schematic Diagram – MAIN Section (1/3)– ..................
Schematic Diagram – MAIN Section (2/3)– ..................
Schematic Diagram – MAIN Section (3/3)– ..................
Printed Wiring Board
– MAIN Board (Side A) ..................................................
Printed Wiring Boards
– MAIN Board (Side B), AC/BAT Boards .....................
Printed Wiring Boards
– PANEL Section – .........................................................
Schematic Diagram – PANEL Section – .......................
Schematic Diagram
– BD SWITCH Section – ................................................
Printed Wiring Board
– BD SWITCH Section – ................................................
6-5.
6-6.
6-7.
6-8.
6-9.
6-10.
6-11.
6-12.
6-13.
6-14.
6-15.
6-16.
32
41
43
46
47
49
51
55
57
59
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate lowvoltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
61
63
65
67
0.15 µF
1.5 k Ω
69
AC
voltmeter
(0.75 V)
69
7.
EXPLODED VIEWS ................................................ 75
8.
ELECTRICAL PARTS LIST ............................... 79
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
4-998-603-1 π AEP and UK models
4-998-603-3 π US model
4-998-603-4 π Canadian model
–4–
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instructions.
Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
This caution
label is located
inside the unit.
ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type
anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
SAFETY-RELATED COMPONENT WARNING!!
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
–5–
JIG FOR CHECKING BD BOARD WAVEFORM
The special jig (J-2501-149-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be
performed are shown as follows.
GND : Ground
I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser)
IOP : For measuring IOP (Check the deterioration of the optical pick-up laser)
TE : TRK error signal (Traverse adjustment)
VC : Reference level for checking the signal
RF : RF signal (Check jitter)
Mechanism deck
CN110
6P connector
5P Connector
RF
VC
TEO
IOP
I+3V
GND
RF
VC
1 RF
VC
TEO MDM-3
IOP
5 I-3V
TEO
IOP
I+3V
GND
–6–
1 VC
RF
TEO MDM-5
IOP
I+3V
6 GND
IOP Data Recording and Display When Pickup and Non-volatile Memory (IC171 of BD board) are Replaced
The IOP value labeled on the pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need to look
at the value on the label of the optical pick-up. When replacing the pick-up or non-volatile memory (IC171 of BD board), record the IOP
value on the pick-up according to the following procedure.
Record Precedure:
± knob
≠
± knob and [ ]
≠
1. While pressing the [ AMS ]
p button, connect the power plug to the outlet, and release the [ AMS ]
and [ ]
p button.
2. Rotate the [ AMS ]
± knob to display “[Service]”, and press the [YES] button.
≠
± knob to display “lop.Write” (C28), and press the [YES] button.
≠
3. Rotate the [ AMS ]
4. The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.
5. Input the IOP value written on the optical pick-up.
To select the number : Rotate the [ AMS ]
± knob.
≠
± knob.
To select the digit : Press the [ AMS ]
≠
6. When the [YES] button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).
7. As the adjustment results are recorded for the 6 value. Leave it as it is and press the [YES] button.
8. “Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop
Write”.
9. Press the [REPEAT] button to complete. “Standby” will be displayed.
Display Precedure:
± knob
≠
± knob and [ ]
≠
1. While pressing the [ AMS ]
p button, connect the power plug to the outlet, and release the [ AMS ]
and [ ]
p button.
± knob to display “[Service]”, and press the [YES] button.
2. Rotate the [ AMS ]
≠
± knob to display “lop.Read” (C27).
3. Rotate the [ AMS ]
≠
4. “@@.@/##.#” is displayed and the recorded contents are displayed.
@@.@ : indicates the Iop value labeled on the pick-up.
##.# : indicates the Iop value after adjustment
± button or [MENU/NO] button to display “Iop Read”. Then press the [REPEAT] button to display
≠
5. To end, press the [ AMS ]
“Standby”.
–7–
Checks Prior to Parts Replacement and Adjustments
Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in “5 Electrical Adjustments”.
Criteria for Determination
(Unsatisfactory if specified value is not satisfied)
Measure if unsatisfactory:
• 0.9 mW power
Specified value : 0.84 to 0.92 mW
• 7.0 mW power
Specified value : 6.8 to 7.2 mW
• Clean the optical pick-up
• Adjust again
• Replace the optical pick-up
lop (at 7mW)
• Labeled on the optical pickup
Iop value ± 10mA
• Replace the optical pick-up
Traverse check
(5-6-3 : See page 25)
• Traverse waveform
Specified value : Below 10% offset
• Replace the optical pick-up
Focus bias check
(5-6-4 : See page 26)
• Error rate check
Specified value : For points a, b, and c
C1 error : Below 220
AD error : Below 2
• Replace the optical pick-up
C PLAY check
(5-6-5 : See page 26)
• Error rate check
Specified value:
a. When using test disc (MDW-74/AU-1)
C1 error : Below 80
AD error : Below 2
b. When using check disc (TDYS-1)
C1 error : Below 50
• Replace the optical pick-up
Self-recording/playback
check
(REC/PLAY)
(5-6-6 : See page 26)
• CPLAY error rate check
Specified value:
C1 error : Below 80
AD error : Below 2
If always unsatisfactory:
• Replace the overwrite head
• Check for disconnection of the circuits around the
overwrite head
Laser power check
(5-6-2 : See page 25)
If occasionally unsatisfactory:
• Check if the overwrite head is distorted
• Check the mechanism around the sled
TEMP check
(Temperature
compensation
offset check)
(5-6-1 : See page 25)
• Unsatisfactory if displayed as T=@@ (##) [NG”
NG
(@@, ## are both arbitrary numbers)
• Check for disconnection of the circuits around
D101 (BD board)
• Check the signals around IC101, IC121, CN102,
CN103 (BD board)
Note:
The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments.
When performing adjustments, use the specified values for adjustments.
Forced Reset
The system microprocessor can be reset in the following procedure.
Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.
Procedure :
Disconnect the power plug, short-circuit jumper wire of JW705 and JW706 (RESET).
[BAT BOARD] (Component Side)
JW706 JW705
CN703
–8–
Retry Cause Display Mode
• In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During playback,
the “track mode” for obtaining track information will be set.
This is useful for locating the faulty part of the unit.
• The following will be displayed :
During recording and stop : Retry cause, number of retries, and number of retry errors.
During playback
: Information such as type of disc played, part played, copyright.
These are displayed in hexadecimal.
Precedure:
1. Load a recordable disc whose contents can be erased into the unit.
± knob to
2. Press the [MENU/NO] button. When “Edit/Menu” is displayed on the fluorescent display tube, rotate the [ AMS ]
≠
display “All Erase?”.
± knob)
≠
3. Press the [YES] button. (Or press the [ AMS ]
4. When “All Erase??” is displayed on the fluorescent display tube, the music calendar number blinks.
5. Press the [YES]button to display “Complete!!”, and press the [ ]
p button immediately. Wait for about 15 seconds while pressing the
± knob can be pressed instead of the [YES]button for the same results.)
button. (The [ AMS ]
≠
6. When the “TOC” displayed on the fluorescent display tube goes off, release the [ ]
p button.
r
7. Press the [ REC]
button to start recording. Then press the [ ]
P button and start recording.
8. To check the “track mode”, press the [ ]
· button to start play.
9. To exit the test mode, press the [ ]
1/u button, and turn OFF the power. When “TOC” disappears, disconnect the power plug from the
outlet. If the test mode cannot be exited, refer to “Forced Reset” on page 8.
Fig. 1 Reading the Test Mode Display
(During recording and stop)
Fig. 2 Reading the Test Mode Display
(During playback)
RTs@@c##c**
Fluorescent display tube display
@@####**$$
Fluorescent display tube display
@@ : Cause of retry
## : Number of retries
** : Number of retry errors
@@ :
## :
** :
$$ :
Parts No. (name of area named on TOC)
Cluster
Sector
Track mode (Track information such as copyright information of each part)
Reading the Retry Cause Display
Higher Bits
Hexa1 decimal
b7 b6 b5 b4 b3 b2 b1 b0
Hexadecimal 8
Bit
Binary
Lower Bits
Occurring conditions
Cause of Retry
4
2
1
8
4
2
0
0
0
0
0
0
0
1
01
shock
When track jump (shock) is detected
0
0
0
0
0
0
1
0
02
ader5
When ADER was counted more than five times
continuously
0
0
0
0
0
1
0
0
04
0
0
0
0
1
0
0
0
08
Discontinuous address When ADIP address is not continuous
When DIN unlock is detected
DIN unlock
0
0
0
1
0
0
0
0
10
FCS incorrect
When not in focus
0
0
1
0
0
0
0
0
20
IVR rec error
When ABCD signal level exceeds the specified range
0
1
0
0
0
0
0
0
40
CLV unlock
When CLV is unlocked
1
0
0
0
0
0
0
0
80
Access fault
When access operation is not performed normally
Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Example
When 42 is displayed:
Higher bit: 4 = 0100 n b6
Lower bit : 2 = 0010 n b1
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
When A2 is displayed:
Higher bit: A = 1010 n b7+b5
Lower bit : 2 = 0010 n b2
The retry cause in this case is combined of “access fault”, “IVR rec error”, and “ader5”.
–9–
Reading the Retry Cause Display
Higher Bits Lower Bits
HexaHexadecimal 8 4 2 1 8 4 2 1 decimal
Bit
b7 b6 b5 b4 b3 b2 b1 b0
Binary
Details
When 1
When 0
0
0
0
0
0
0
0
1
01
Emphasis OFF
Emphasis ON
0
0
0
0
0
0
1
0
02
Monaural
Stereo
0
0
0
0
0
1
0
0
04
0
0
0
0
1
0
0
0
08
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
0
0
0
1
0
0
0
0
10
Audio (Normal)
Invalid
0
0
1
0
0
0
0
0
20
Original
Digital copy
0
1
0
0
0
0
0
0
40
Copyright
No copyright
1
0
0
0
0
0
0
0
80
Write prohibited
Write allowed
Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Example When 84 is displayed:
Higher bit : 8 = 1000 n b7
Lower bit : 4 = 0100 n b2
In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “emphasis OFF”, “monaural”,
“original”, “copyright exists”, and “write allowed”.
Example When 07 is displayed:
Higher bit : 0 = 1000 n All 0
Lower bit : 7 = 0111 n b0+b1+b2
In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “emphasis ON”, “stereo”,
“original”, “copyright exists”, and “write prohibited”.
Hexadecimal n Binary Conversion Table
Hexadecimal
Binary
Hexadecimal
Binary
0
0000
8
1000
1
0001
9
1001
2
0010
A
1010
3
0011
B
1011
4
0100
C
1100
5
0101
D
1101
6
0110
E
1110
7
0111
F
1111
– 10 –
SECTION 2
GENERAL
LOCATION OF CONTROLS
1 STANDBY indicator
2 1/u (Power) button
• Front view
3 TIMER switch
4 MEGA CONTROL button
5 MEGA CONTROL indicator
6 MUSIC SYNC button
7 SCROLL/CLOCK SET button
8 DISPLAY/CHAR button
9 Remote sensor
0 Fluoresent indicator tube
!¡ MENU/NO button
!™ ≠ AMS ± knob
!£ YES button
!¢ REC MODE switch
!∞ 0/) button
!§ INPUT switch
!¶ REC LEVEL knob (ANALOG)
!• REC LEVEL knob (DIGITAL)
!ª PHONES jack
@º PHONE LEVEL knob
@¡ FADER button
@™ PLAY MODE button
@£ REPEAT button
@¢ TIME button
@∞ DISC slot
@§ CLEAR button
@¶ § EJECT button
@• · button
@ª P button
#º p button
#¡ r REC button
1 LINE (ANALOG) IN jacks
• Rear view
2 LINE (ANALOG) OUT jacks
3 S-LINK CONTROL A1 jacks
4 DIGITAL COAXIAL IN jack
5 DIGITAL OPTICAL IN1/IN2 connectors
6 DIGITAL COAXIAL OUT jack
12
3
4
5
7 DIGITAL OPTICAL OUT connector
6 7
– 11 –
– 12 –
– 13 –
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
CASE (4095269)
(Page 14)
FRONT PANEL SECTION
(Page 15)
MAIN BOARD
(Page 15)
MECHANISM SECITON (MDM-5A)
(Page 16)
BASE UNIT (MBU-5A), BD BOARD
(Page 17)
SLIDER (CAM)
(Page 16)
SW BOARD, LOADING MOTOR (M103)
(Page 17)
Note: Follow the disassembly procedure in the numerical order given.
CASE (4095269)
1 four screws
(tapping) (SILVER)
(CASE3 TP2) (BLACK: EXCEPT UK)
(CASE) (UK)
2 case (4095269)
– 14 –
1 three screws
(tapping) (SILVER)
(CASE 3 TP2)
(BLACK: EXCEPT UK)
(CASE) (UK)
FRONT PANEL SECITON
2 wire (flat type) (21 core) (MAIN-DISP)
(CN800)
1 connector
(CN790)
4 claw
1 two connectors
(CN801)
4 claw
3 five screws
(BVTP3 × 8)
5 front panel section
MAIN BOARD
1 connector
(CN200)
2 wire (flat type) (21 core) (MAIN-BD)
(CN402)
2 wire (flat type) (21 core) (MAIN-DISP)
(CN800)
3 two screws
(BVTP3 × 8)
1 connector (CN200)
3 three screws
(BVTP3 × 8)
2 wire (flat type) (23 core)
(CN400)
1 two connectors
(CN100, 801)
3 seven screws
(BVTP3 × 8)
4 MAIN board
– 15 –
MECHANISM SECTION (MDM-5A)
3 four step screws
(BVTTWH M3)
1 connector
(CN401)
4 Remove the mechanism deck
(MDM-5A) to direction of the arrow.
2 wire (flat type) (21 core) (MAIN-BD)
(CN402)
2 wire (flat type) (23 core)
(CN400)
SLIDER (CAM)
6 slider (Cam)
• Note for Installation of Slider A (Cam)
Set the shaft of Cam gear to
be at the position in the figure.
2 bracket (Guide L)
1 two screws (P2.6x6)
Set the shaft of Lever (O/C) to
be at the position in the figure.
3 leaf spring
4 two screws (P2.6x6)
5 bracket (Guide R)
– 16 –
BASE UNIT (MBU-5A), BD BOARD
2 base unit (MBU-5A)
5 flexible board
(CN104)
6 flexible board
(CN101)
1 three screws
(P2.6 × 6)
3 Remove the solder (Five portion).
7 BD board
4 screw (M1.7 × 4)
SW BOARD, LOADING MOTOR (M103)
1 screw (PTPWH M2.6 × 6)
2 gear B
3 two screws
(PWH1.7 × 4)
4 loading motor (M103)
6 SW board
5 three screws (BTP2.6 × 6)
– 17 –
SECTION 4
TEST MODE
1. PRECAUTIONS FOR USE OF TEST MODE
• As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc
is stopped before setting and removing it.
button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will
Even if the [ EJECT]
§
not stop rotating.
Therefore, it will be ejected while rotating.
Be sure to press the [ EJECT]
button after pressing the [MENU/NO] button and the rotation of disc is stopped.
§
1-1. Recording laser emission mode and operating buttons
• Continuous recording mode (CREC MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
r
• When pressing the [ REC]
button.
2. SETTING THE TEST MODE
The following are two methods of entering the test mode.
± knob and [ ]
±
Procedure 1: While pressing the [ AMS ]
≠
p button, connect the power plug to an outlet, and release the [ AMS ]
≠
knob and [ ]
p button.
± knob switches between the following
When the test mode is set, “[Check]” will be displayed. Rotating the [ AMS ]
≠
four groups; ···Nn Check Nn Adjust Nn Service Nn Develop Nn ···.
± knob.
Procedure 2: While pressing the [ AMS ]
± knob, connect the power plug to the outlet and release the [ AMS ]
≠
≠
When the test mode is set, “TEMP CHECK” will be displayed. By setting the test mode using this method, only the “Check”
group of method 1 can be executed.
3. EXITING THE TEST MODE
Press the [REPEAT] button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.
4. BASIC OPERATIONS OF THE TEST MODE
≠
± knob, [YES] button, and [MENU/NO] button.
All operations are performed using the [ AMS ]
The functions of these buttons are as follows.
Function name
Function
[ AMS ]
≠
± knob Changes parameters and modes
YES button
Proceeds onto the next step. Finalizes input.
MENU/NO button
Returns to previous step. Stops operations.
– 18 –
5. SELECTING THE TEST MODE
± knob. After selecting the
≠
There are 31 types of test modes as shown below. The groups can be switched by rotating the [ AMS ]
± knob switches between these modes.
≠
group to be used, press the [YES] button. After setting a certain group, rotating the [ AMS ]
Refer to “Group” in the table for details selected.
All items used for servicing can be treated using group S. So be carefully not to enter other groups by mistake.
Display
No.
TEMP CHECK
C01
Temperature compensation offset check
Contents
Mark
C
Group (*)
S
LDPWR CHECK
C02
Laser power check
C
S
EF MO CHECK
C03
Traverse (MO) check
C
S
EF CD CHECK
C04
Traverse (CD) check
C
S
FBIAS CHECK
C05
Focus bias check
C
S
S curve CHECK
C06
S letter check
(X)
C
VERIFY MODE
C07
Non-volatile memory check
(X)
C
DETRK CHECK
C08
Detrack check
(X)
C
TEMP ADJUS
C09
Temperature compensation offset adjustment
A
S
LDPWR ADJUS
C10
Laser power adjustment
A
S
EF MO ADJUS
C11
Traverse (MO) adjustment
A
S
EF CD ADJUS
C12
Traverse (CD) adjustment
A
S
FBIAS ADJUS
C13
Focus bias adjustment
A
S
EEP MODE
C14
Non-volatile memory control
MANUAL CMD
C15
SVDATA READ
(X) (!)
D
Command transmission
(X)
D
C16
Status display
(X)
D
ERR DP MODE
C17
Error history display, clear
SLES MOVE
C18
Sled check
(X)
D
ACCESS MODE
C19
Access check
(X)
D
0920 CHECK
C20
Outermost circumference check
(X)
D
HEAD ADJUST
C21
Head position check
(X)
D
CPLAY2 MODE
C22
Same functions as CPLAY MODE
(X)
D
CREC2 MODE
C23
Same functions as CREC MODE
(X)
ADJ CLEAR
C24
Initialization of non-volatile memory of adjustment value
A
S
AG Set (MO)
C25
Auto gain output level adjustment (MO)
A
S
AG Set (CD)
C26
Auto gain output level adjustment (CD)
A
Iop Read
C27
IOP data display
Iop Write
C28
IOP data write
JB920 @@.@@
C29
Microprocessing version display
C
CPLAY MODE
C30
Continuous play mode
C
A
S
D
CREC MODE
C31
Continuous recording mode
C
A
S
D
S
D
C
A
Group (*)
C: Check
S: Service
S
S
S
S
A: Adjust
D: Develop
• For details of each adjustment mode, refer to “5. Electrical Adjustments”.
For details of “ERR DP MODE”, refer to “Self-Diagnosis Function” on page 2.
• If a different mode has been selected by mistake, press the [MENU/NO] button to exit that mode.
• Modes with (X) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set accidentally, press the [MENU/NO] button to exit the mode immediately. Be especially careful not to set the modes with (!) as they will
overwrite the non-volatile memory and reset it, and as a result, the unit will not operate normally.
– 19 –
5-1. Operating the Continuous Playback Mode
1. Entering the continuous playback mode
(1) Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.)
± knob and display “CPLAY MODE” (C30).
≠
(2) Rotate the [ AMS ]
(3) Press the [YES] button to change the display to “CPLAY MID”.
(4) When access completes, the display changes to “C =
AD = ”.
Note: The numbers “ ” displayed show you error rates and ADER.
2. Changing the parts to be played back
(1) Press the [YES] button during continuous playback to change the display as below.
“CPLAY MID” n “CPLAY OUT” n “CPLAY IN”
(2)
When pressed another time, the parts to be played back can be moved.
When access completes, the display changes to “C =
AD = ”.
Note: The numbers “ ” displayed show you error rates and ADER.
3. Ending the continuous playback mode
(1) Press the [MENU/NO] button. The display will change to “CPLAY MODE”.
§
(2) Press the [ EJECT]
button to remove the disc.
Note: The playback start addresses for IN, MID, and OUT are as follows.
IN 40h cluster
MID 300h cluster
OUT 700h cluster
5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check.)
1. Entering the continuous recording mode
(1) Set a recordable disc in the unit.
± knob and display “CREC MODE”.
≠
(2) Rotate the [ AMS ]
(3) Press the [YES] button to change the display to “CREC MID” (C31).
” and REC lights up.
(4) When access completes, the display changes to “CREC (
Note: The numbers “ ” displayed shows you the recording position addresses.
2. Changing the parts to be recorded
(1) When the [YES] button is pressed during continuous recording, the display changes as below.
“CPLAY MID” n “CPLAY OUT” n “CPLAY IN”
(2)
When pressed another time, the parts to be recorded can be changed. REC goes off.
” and REC lights up.
When access completes, the display changes to “CREC (
Note: The numbers “ ” displayed shows you the recording position addresses.
3. Ending the continuous recording mode
(1) Press the [MENU/NO] button. The display changes to “CREC MODE” and REC goes off.
§
button to remove the disc.
(2) Press the [ EJECT]
Note 1: The recording start addresses for IN, MID, and OUT are as follows.
IN 40h cluster
MID 300h cluster
OUT 700h cluster
Note 2: The [MENU/NO] button can be used to stop recording anytime.
Note 3: Do not perform continuous recording for long periods of time above 5 minutes.
Note 4: During continuous recording, be careful not to apply vibration.
5-3. Non-Volatile Memory Mode (EEP MODE)
This mode reads and writes the contents of the non-volatile memory.
It is not used in servicing. If set accidentally, press the [MENU/NO] button immediately to exit it.
– 20 –
6. FUNCTIONS OF OTHER BUTTONS
Function
Contents
·
Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo
turns ON/OFF.
p
Stops continuous playback and continuous recording.
)
The sled moves to the outer circumference only when this is pressed.
0
The sled moves to the inner circumference only when this is pressed.
SCROLL/CLOCK SET
Switches between the pit and groove modes when pressed.
PLAY MODE
Switches the spindle servo mode (CLVS ˜ CLV A).
DISPLAY/CHAR
Switches the displayed contents each time the button is pressed
§ EJECT
Ejects the disc
REPEAT
Exits the test mode
7. TEST MODE DISPLAYS
Each time the [DISPLAY/CHAR] button is pressed, the display changes in the following order.
1. Mode display
Displays “TEMP ADJUST”, “CPLAYMODE”, etc.
Mode display
2. Error rate display
Displays the error rate in the following way.
C = ππππ AD = ππππ
C = Indicates the C1 error.
AD = Indicates ADER.
Error rate display
Address display
3. Address display
The address is displayed as follows. (MO: recordable disc, CD: playback only disc)
Pressing the [SCROLL/CLOCK SET] button switches between the group display and bit display.
h = ππππ s = ππππ (MO pit and CD)
h = ππππ a = ππππ (MO groove)
h = Indicates the header address.
s = Indicates the SUBQ address.
a = Indicates the ADIP address.
Note: “–” is displayed when servo is not imposed.
4. Auto gain display (Not used in servicing)
The auto gain is displayed as follows.
AG = ππ/ππππ[ ππ
5. Detrack check display (Not used in servicing)
The detrack is displayed as follows.
ADR = πππππππ
6. IVR display (Not used in servicing)
The IVR is displayed as follows.
[ππ][ππ][ππ
– 21 –
Auto gain display
(Not used in servicing)
Detrack check display
(Not used in servicing)
IVR display
(Not used in servicing)
MEANINGS OF OTHER DISPLAYS
Contents
Display
When Off
When Lit
·
During continuous playback (CLV: ON)
STOP (CLV: OFF)
P
Tracking servo OFF
Tracking servo ON
REC
Recording mode ON
Recording mode OFF
–SYNC
CLV low speed mode
CLV normal mode
A.SPACE
ABCD adjustment completed
OVER
Tracking offset cancel ON
B
Tracking auto gain OK
A-
Focus auto gain OK
TRACK
Pit
Groove
DISC
High reflection
Low reflection
DATE
CLV-S
CLV-A
CLOCK
CLV LOCK
CLV UNLOCK
Tracking offset cancel OFF
– 22 –
SECTION 5
ELECTRICAL ADJUSTMENTS
1. PARTS REPLACEMENT AND ADJUSTMENT
• Check and adjust the MDM and MBU as follows.
The procedure changes according to the part replaced
• Abbreviation
OP : Optical pick-up
OWH : Overwrite head
• Temperature compensation offset check
• Laser power check
• Traverse check
• Focus bias check
• C PLAY check
• Self-recording/playback check
OK
NG
Check the sled and spindle
mechanisms.
Other causes can be suspected.
Parts Replacement and Repair
Has the OWH been replaced?
YES
NO
Has OP, IC171, IC101, or
IC121 been replaced?
YES
Initial setting of the adjustment value
NO
Has OP or IC171 been replaced?
NO
YES
IOP information recording
(IOP value labeled on OP)
Has IC171 or D101
been replaced?
NO
YES
Temperature compensation offset adjustment
• Laser power adjustment
• Traverse adjustment
• Focus bias adjustment
• Error rate adjustment
• Focus bias check
• Auto gain adjustment
– 23 –
2. PRECAUTIONS FOR CHECKING LASER DIODE
EMISSINON
To check the emission of the laser diode during adjustments, never
view directly from the top as this may lose your eye-sight.
3. PRECAUTIONS FOR USE OF OPTICAL
PICK-UP (KMS-260A)
As the laser diode in the optical pick-up is easily damaged by static
electricity, solder the laser tap of the flexible board when using it.
Before disconnecting the connector, desolder first. Before connecting the connector, be careful not to remove the solder. Also
take adequate measures to prevent damage by static electricity.
Handle the flexible board with care as it breaks easily.
pick-up
flexible board
4. Use the following tools and measuring devices.
• Check Disc (MD) TDYS-1
(Parts No. 4-963-646-01)
• TEST DISK (MDW-74/AU-1) (Parts No. 8-892-341-41)
• Laser power meter LPM-8001 (Parts No. J-2501-046-A)
or MD Laser power meter 8010S (Parts No. J-2501-145-A)
• Oscilloscope (Measure after performing CAL of prove.)
• Digital voltmeter
• Thermometer
• Jig for checking BD board waveform
(Parts No. : J-2501-149-A)
5. When observing several signals on the oscilloscope, etc.,
make sure that VC and ground do not connect inside the oscilloscope.
(VC and ground will become short-circuited.)
6. Using the above jig enables the waveform to be checked without the need to solder.
(Refer to Servicing Notes on page 6.)
7. As the disc used will affect the adjustment results, make sure
that no dusts nor fingerprints are attached to it.
Laser power meter
When performing laser power checks and adjustment (electrical
adjustment), use of the new MD laser power meter 8010S (J-2501145-A) instead of the conventional laser power meter is convenient.
It sharply reduces the time and trouble to set the laser power meter
sensor onto the objective lens of the pick-up.
laser tap
Optical pick-up flexible board
4. PRECAUTIONS FOR ADJUSTMENTS
1. When replacing the following parts, perform the adjustments
and checks with ¬ in the order shown in the following table.
Optical
Pick-up IC171
BD Board
D101
IC101, IC121 IC192
1. Initial setting of
adjustment value
¬
¬
G
¬
G
2. Recording of IOP
information
(Value written in
the pick-up)
¬
¬
G
G
G
3. Temperature
compensation
offset adjustment
G
¬
¬
G
G
4. Laser power
adjustment
¬
¬
G
¬
¬
5. Traverse
adjustment
¬
¬
G
¬
G
6. Focus bias
adjustment
¬
¬
G
¬
G
7. Error rate check
¬
¬
G
¬
G
8. Auto gain output
level adjustment
¬
¬
G
¬
G
5. CREATING CONTINUOUSLY RECORDED DISC
* This disc is used in focus bias adjustment and error rate check.
The following describes how to create a continuous recording
disc.
1. Insert a disc (blank disc) commercially available.
2. Rotate the [ AMS ]
± knob and display “CREC MODE”.
≠
(C31)
3. Press the [YES] button again to display “CREC MID”.
Display “CREC (0300)” and start to recording.
4. Complete recording within 5 minutes.
5. Press the [MENU/NO] button and stop recording .
6. Press the [ EJECT]
button and remove the disc.
§
The above has been how to create a continuous recorded data for
the focus bias adjustment and error rate check.
Note :
• Be careful not to apply vibration during continuous recording.
2. Set the test mode when performing adjustments.
After completing the adjustments, exit the test mode.
Perform the adjustments and checks in “group S” of the test
mode.
3. Perform the adjustments to be needed in the order shown.
– 24 –
6. CHECK PRIOR TO REPAIRS
These checks are performed before replacing parts according to
“approximate specifications” to determine the faulty locations. For
details, refer to “Checks Prior to Parts Replacement and Adjustments” (See page 8).
Note 1: After step 4, each time the [YES] button is pressed, the display
will be switched between “LD 0.7 mW $ ”, “LD 6.2 mW $
”, and “LD Wp
$ ”. Nothing needs to be performed
here.
6-3. Traverse Check
6-1. Temperature Compensation Offset Check
When performing adjustments, set the internal temperature and
room temperature of 22 °C to 28 °C.
Note 1: Data will be erased during MO reading if a recorded disc is
used in this adjustment.
Note 2: If the traverse waveform is not clear, connect the oscilloscope
as shown in the following figure so that it can be seen more
clearly.
oscilloscope
(DC range)
Checking Procedure:
± knob to display “TEMP CHECK”.
≠
1. Rotate the [ AMS ]
2. Press the [YES] button.
3. “T=@@(##) [OK” should be displayed. If “T=@@ (##) [NG”
is displayed, it means that the results are bad.
(@@ indicates the current value set, and ## indicates the value
written in the non-volatile memory.)
BD board
CN110 pin 3 (TE)
CN110 pin 1 (VC)
+
–
10 pF
Connection :
6-2. Laser Power Check
Before checking, check the IOP value of the optical pick-up.
(Refer to 5-8. Recording and Displaying IOP Information.)
oscilloscope
(DC range)
BD board
Connection :
CN110 pin 3 (TE)
CN110 pin 1 (VC)
laser
power meter
Optical pick-up
objective lens
digital voltmeter
BD board
CN110 pin 5 (I +3V)
CN110 pin 4 (IOP)
330 k Ω
+
–
Checking Procedure:
1. Set the laser power meter on the objective lens of the optical
pick-up. (When it cannot be set properly, press the [ ]
0 button or [ ]
) button to move the optical pick-up.)
Connect the digital volt meter to CN110 pin 5 (I+3V) and
CN110 pin 4 (IOP).
± knob and display “LDPWR
≠
2. Then, rotate the [ AMS ]
CHECK” (C02).
3. Press the [YES] button once and display “LD 0.9 mW $ ”.
Check that the reading of the laser power meter become 0.84
to 0.92 mW.
4. Press the [YES] button once more and display “LD 7.0 mW $
”. Check that the reading the laser power meter and digital
volt meter satisfy the specified value.
Specification:
Laser power meter reading: 7.0 ± 0.2 mW
Digital voltmeter reading : Optical pick-up displayed value
±10%
(Optical pick-up label)
+
–
V: 0.1 V/div
H: 10 ms/div
Checking Procedure:
1. Connect an oscilloscope to CN110 pin 3 (TE) and CN110
pin 1 (VC) of the BD board.
2. Load a disc (any available on the market). (Refer to Note 1.)
3. Press the [ ]
) button and move the optical pick-up outside
the pit.
± knob and display “EF MO
≠
4. Rotate the [ AMS ]
CHECK”(C03).
MO-R”.
5. Press the [YES] button and display “EFB =
(Laser power READ power/Focus servo ON/tracking servo
OFF/spindle (S) servo ON)
6. Observe the waveform of the oscilloscope, and check that the
±
specified value is satisfied. Do not rotate the[ AMS ]
≠
knob.
(Read power traverse checking)
(Traverse Waveform)
A
VC
B
Specified value : Below 10% offset value
Offset value (%) = IA – BI X 100
2 (A + B)
7. Press the [YES] button and display “EFB =
MO-W”.
8. Observe the waveform of the oscilloscope, and check that the
±
specified value is satisfied. Do not rotate the [ AMS ]
≠
knob.
(Write power traverse checking)
KMS260A
27X40
B0567
(Traverse Waveform)
A
VC
B
lOP=56.7 mA in this case
lOP (mA) = Digital voltmeter reading (mV)/1 (Ω)
5. Press the [MENU/NO] button and display “LDPWR CHECK”
and stop the laser emission.
(The [MENU/NO] button is effective at all times to stop the
laser emission.)
– 25 –
Specified value : Below 10% offset value
Offset value (%) = IA – BI X 100
2 (A + B)
9. Press the [YES] button display “EFB =
MO-P”.
Then, the optical pick-up moves to the pit area automatically
and servo is imposed.
10. Observe the waveform of the oscilloscope, and check that the
±
≠
specified value is satisfied. Do not rotate the [ AMS ]
knob.
(Traverse Waveform)
A
VC
B
Specified value : Below 10% offset value
Offset value (%) = IA – BI X 100
2 (A + B)
11. Press the [YES] button display “EF MO CHECK”
The disc stops rotating automatically.
12. Press the [ EJECT]
button and remove the disc.
§
13. Load the check disc (MD) TDYS-1.
± knob and display “EF CD CHECK”
≠
14. Roteto the [ AMS ]
(C04).
15. Press the [YES] button and display “EFB =
CD”. Servo is
imposed automatically.
16. Observe the waveform of the oscilloscope, and check that the
±
≠
specified value is satisfied. Do not rotate the [ AMS ]
knob.
(Traverse Waveform)
A
VC
B
6-4. Focus Bias Check
Change the focus bias and check the focus tolerance amount.
Checking Procedure :
1. Load a test disk (MDW-74/AU-1).
± knob and display “CPLAY MODE”
≠
2. Rotate the [ AMS ]
(C30).
3. Press the [YES] button twice and display “CPLAY MID”.
4. Press the [MENU/NO] button when “C =
AD = ” is
displayed.
± knob and display “FBIAS CHECK”
5. Rotate the [ AMS ]
≠
(C05).
6. Press the [YES] button and display “
/ c = ”.
The first four digits indicate the C1 error rate, the two digits
after [/] indicate ADER, and the 2 digits after [c =] indicate
the focus bias value.
Check that the C1 error is below 220 and ADER is below 2.
7. Press the [YES] button and display “
/ b = ”.
Check that the C1 error is below 220 and ADER is below 2.
8. Press the [YES] button and display “
/ a = ”.
Check that the C1 error is below 220 and ADER is below 2.
9. Press the [MENU/NO] button, next press the [ EJECT]
but§
ton, and remove the test disc.
6-5. C PLAY Checking
MO Error Rate Check
Checking Procedure :
1. Load a test disk (MDW-74/AU-1).
± knob and display “CPLAY MODE”
≠
2. Rotate the [ AMS ]
(C30).
3. Press the [YES] button and display “CPLAY MID”.
4. The display changes to “C =
AD = ”.
5. If the C1 error rate is below 80, check that ADER is below 2.
6. Press the [MENU/NO] button, stop playback, press the
[ EJECT]
button, and test disc.
§
Specified value : Below 10% offset value
Offset value (%) = IA – BI X 100
2 (A + B)
17. Press the [YES] button and display “EF CD CHECK”.
18. Press the [ EJECT]
button and remove the check disc (MD)
§
TDYS-1.
CD Error Rate Check
Checking Procedure :
1. Load a check disc (MD) TDYS-1.
± knob and display “CPLAY MODE”
≠
2. Rotate the [ AMS ]
(C30).
3. Press the [YES] button twice and display “CPLAY MID”.
4. The display changes to “C =
AD = ”.
5. Check that the C1 error rate is below 50.
6. Press the [MENU/NO] button, stop playback, press the
[ EJECT]
button, and the test disc.
§
6-6. Self-Recording/playback Check
Prepare a continuous recording disc using the unit to be repaired
and check the error rate.
Checking Procedure :
1. Insert a recordable disc (blank disc) into the unit.
± knob to display “CREC MODE”
2. Rotate the [ AMS ]
≠
(C31).
3. Press the [YES] button to display the “CREC MID”.
4. When recording starts, “ REC ” is displayed, this becomes
“CREC @@@@” (@@@@ is the address), and recording
starts.
5. About 1 minute later, press the [MENU/NO] button to stop
continuous recording.
±
≠
6. Rotate the [ AMS ]
knob to display “C PLAY
MODE”(C30).
7. Press the [YES] button to display “C PLAY MID”.
8. “C =
AD = ” will be displayed.
9. Check that the C1 error becomes below 80 and the AD error
below 2.
10. Press the [MENU/NO] button to stop playback, and press the
§
[ EJECT]
button and remove the disc.
– 26 –
7. INITIAL SETTING OF ADJUSTMENT VALUE
9. TEMPERATURE COMPENSATION OFFSET
ADJUTMENT
Note:
Mode which sets the adjustment results recorded in the non-volatile
memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting
value.
If initial setting is performed, perform all adjustments again excluding the
temperature compensation offset adjustment.
For details of the initial setting, refer to “4. Precautions on Adjustments”
and execute the initial setting before the adjustment as required.
Save the temperature data at that time in the non-volatile memory
as 25 ˚C reference data.
Setting Procedure :
1. Rotate the [ AMS ]
± knob to display “ADJ CLEAR
≠
(C24)”.
2. Press the [YES] button. “Complete!” will be displayed momentarily and initial setting will be executed, after which “ADJ
CLEAR” will be displayed.
8. RECORDING AND DISPLAYING THE IOP
INFORMATION
The IOP data can be recorded in the non-volatile memory. The
IOP value on the label of the optical pickup and the IOP value
after the adjustment will be recorded. Recording these data eliminates the need to read the label on the optical pick-up.
Recording Procedure :
± knob and [ ]
1. While pressing the [ AMS ]
p button,
≠
connect the power plug to the outlet, and release the
[ AMS ]
p button.
± knob and [ ]
≠
± knob to display “[Service]”, and
≠
2. Rotate the [ AMS ]
press the [YES] button.
± knob to display “Iop.Write” (C28),
≠
3. Rotate the [ AMS ]
and press the [YES] button.
4. The display becomes Ref=@@@.@ (@ is an arbitrary number) and the numbers which can be changed will blink.
5. Input the IOP value written on the optical pick-up.
To select the number : Rotate the [ AMS ]
± knob.
≠
± knob
To select the digit : Press the [ AMS ]
≠
6. When the [YES] button is pressed, the display becomes
“Measu=@@@.@” (@ is an arbitrary number).
7. As the adjustment results are recorded for the 6 value. Leave
it as it is and press the [YES] button.
8. “Complete!” will be displayed momentarily. The value will
be recorded in the non-volatile memory and the display will
become “Iop Write”.
Display Procedure :
± knob to display “Iop.Read”(C27).
1. Rotate the [ AMS ]
≠
2. “@@.@/##.#” is displayed and the recorded contents are displayed.
@@.@ indicates the Iop value labeled on the pick-up.
##.# indicates the Iop value after adjustment
± button or [MENU/NO] button
≠
3. To end, press the [ AMS ]
to display “Iop Read”.
Note :
1. Usually, do not perform this adjustment.
2. Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C.
Perform it immediately after the power is turned on when the internal
temperature of the unit is the same as the ambient temperature of 22 ˚C
to 28 ˚C.
3. When D101 has been replaced, perform this adjustment after the temperature of this part has become the ambient temperature.
Adjusting Procedure :
± knob and display “TEMP ADJUS”.
1. Rotate the [ AMS ]
≠
2. Press the [YES] button and select the “TEMP ADJUS” mode.
3. “TEMP =
[OK” and the current temperature data will be
displayed.
4. To save the data, press the [YES] button.
When not saving the data, press the [MENU/NO] button.
5. When the [YES] button is pressed, “TEMP =
SAVE” will
be displayed and turned back to “TEMP ADJUS” display then.
When the [MENU/NO] button is pressed, “TEMP ADJUS” will
be displayed immediatelly.
Specified Value :
” should be within “E0 - EF”, “F0 - FF”, “00 The “TEMP =
0F”, “10 - 1F” and “20 - 2F”.
10. LASER POWER ADJUSTMENT
Check the IOP value of the optical pick-up before adjustments.
(Refer to 5-8. Recording and Displaying IOP Information.)
Connection :
laser
power meter
Optical pick-up
objective lens
digital voltmeter
BD board
CN110 pin 5 (I +3V)
CN110 pin 4 (IOP)
+
–
Adjusting Procedure :
1. Set the laser power meter on the objective lens of the optical
pick-up. (When it cannot be set properly, press the [ ]
0 button
or [ ]
) button to move the optical pick-up.)
Connect the digital volt meter to CN110 pin 5 (I+3V) and
CN110 pin 4 (IOP).
± knob and display “LDPWR ADJUS”
≠
2. Rotate the [ AMS ]
(C10).
(Laser power : For adjustment)
3. Press the [YES] button once and display “LD 0.9 mW $ ”.
4. Rotate the [ AMS ]
± knob so that the reading of the
≠
laser power meter becomes 0.85 to 0.91 mW. Press the [YES]
button after setting the range knob of the laser power meter,
and save the adjustment results. (“LD SAVE $ ” will be
displayed for a moment.)
5. Then “LD 7.0 mW $ ” will be displayed.
± knob so that the reading of the
≠
6. Rotate the [ AMS ]
laser power meter becomes 6.9 to 7.1 mW, press the [YES]
button and save it.
Note: Do not perform the emission with 7.0 mW more than 15 seconds
continuously.
– 27 –
7. Then, rotate the [ AMS ]
± knob and display “LDPWR
≠
CHECK” (C02).
8. Press the [YES] button once and display “LD 0.9 mW $ ”.
Check that the reading of the laser power meter become 0.85
to 0.91 mW.
9. Press the [YES] button once more and display “LD 7.0 mW $
”. Check that the reading the laser power meter and digital
volt meter satisfy the specified value.
Note down the digital voltmeter reading value.
Specification:
Laser power meter reading: 7.0 ± 0.2 mW
Digital voltmeter reading : Optical pick-up displayed value
±10%
11. TRAVERSE ADJUSTMENT
Note 1:Data will be erased during MO reading if a recorded disc is
used in this adjustment.
Note 2:If the traverse waveform is not clear, connect the oscilloscope
as shown in the following figure so that it can be seen more
clearly.
oscilloscope
(DC range)
BD board
CN110 pin 3 (TE)
330 k Ω
CN110 pin 1 (VC)
+
–
10 pF
Connection :
(Optical pick-up label)
oscilloscope
(DC range)
KMS260A
27X40
B0567
BD board
CN110 pin 3 (TE)
CN110 pin 1 (VC)
lOP=56.7 mA in this case
lOP (mA) = Digital voltmeter reading (mV)/1 (Ω)
10. Press the [MENU/NO] button and display “LDPWR CHECK”
and stop the laser emission.
(The [MENU/NO] button is effective at all times to stop the
laser emission.)
± knob to display “Iop.Write”(C28).
≠
11. Rotate the [ AMS ]
12. Press the [YES] button. When the display becomes
Ref=@@@.@ (@ is an arbitrary number), press the [YES]
button to display “Measu=@@@.@” (@ is an arbitrary number).
13. The numbers which can be changed will blink. Input the Iop
value noted down at step 9.
± knob.
To select the number : Rotate the [ AMS ]
≠
± knob.
To select the digit : Press the [ AMS ]
≠
14. When the [YES] button is pressed, “Complete!” will be displayed momentarily. The value will be recorded in the nonvolatile memory and the display will become “Iop Write”.
Note 1: After step 4, each time the [YES] button is pressed, the display
will be switched between “LD 0.7 mW $ ”, “LD 6.2 mW $
”, and “LD Wp
$ ”. Nothing needs to be performed
here.
+
–
V: 0.1 V/div
H: 10 ms/div
Adjusting Procedure :
1. Connect an oscilloscope to CN110 pin 3 (TE) and CN110
pin 1 (VC) of the BD board.
2. Load a disc (any available on the market). (Refer to Note 1.)
3. Press the [ ]
) button and move the optical pick-up outside
the pit.
± knob and display “EF MO ADJUS”
≠
4. Rotate the [ AMS ]
(C10).
5. Press the [YES] button and display “EFB =
MO-R”.
(Laser power READ power/Focus servo ON/tracking servo
OFF/spindle (S) servo ON)
± knob so that the waveform of the
≠
6. Rotate the [ AMS ]
oscilloscope becomes the specified value.
± knob is rotated, the
≠
of “EFB=
(When the [ AMS ]
” changes and the waveform changes.) In this adjustment,
waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.
(Read power traverse adjustment)
(Traverse Waveform)
A
VC
B
Specification A = B
7. Press the [YES] button and save the result of adjustment to
the non-volatile memory (“EFB =
SAV” will be displayed
for a moment. Then “EFB =
MO-W” will be displayed).
– 28 –
± knob so that the waveform of the
8. Rotate the [ AMS ]
≠
oscilloscope becomes the specified value.
of “EFB(When the [ AMS ]
± knob is rotated, the
≠
” changes and the waveform changes.) In this adjustment,
waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.
(Write power traverse adjustment)
(Traverse Waveform)
A
VC
B
Specification A = B
9. Press the [YES] button, and save the adjustment results in the
non-volatile memory. (“EFB =
SAV” will be displayed for
a moment.)
10. “EFB =
MO-P”. will be displayed.
The optical pick-up moves to the pit area automatically and
servo is imposed.
± knob until the waveform of the
≠
11. Rotate the [ AMS ]
oscilloscope moves closer to the specified value.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
(Traverse Waveform)
A
VC
B
Specification A = B
12. Press the [YES] button, and save the adjustment results in the
SAV” will be displayed for
non-volatile memory. (“EFB =
a moment.)
Next “EF MO ADJUS” is displayed. The disc stops rotating
automatically.
13. Press the [ EJECT]
button and remove the disc.
§
14. Load the check disc (MD) TDYS-1.
± knob and display “EF CD ADJUS”
15. Roteto [ AMS ]
≠
(C12).
16. Press the [YES] button and display “EFB =
CD”. Servo is
imposed automatically.
± knob so that the waveform of the
≠
17. Rotate the [ AMS ]
oscilloscope moves closer to the specified value.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
SAV” for a mo18. Press the [YES] button, display “EFB =
ment and save the adjustment results in the non-volatile
memory.
Next “EF CD ADJUS” will be displayed.
button and remove the check disc (MD)
19. Press the [ EJECT]
§
TDYS-1.
12. FOCUS BIAS ADJUSTMENT
Adjusting Procedure :
1. Load a test disk (MDW-74/AU-1).
± knob and display “CPLAY MODE”
≠
2. Rotate the [ AMS ]
(C29).
3. Press the [YES] button and display “CPLAY MID”.
4. Press the [MENU/NO] button when “C =
AD = ” is
displayed.
± knob and display “FBIAS AD5. Rotate the [ AMS ]
≠
JUST” (C13).
6. Press the [YES] button and display “
/ a = ”.
The first four digits indicate the C1 error rate, the two digits
after [/] indicate ADER, and the 2 digits after [a =] indicate
the focus bias value.
± knob in the clockwise direction
≠
7. Rotate the [ AMS ]
and find the focus bias value at which the C1 error rate becomes 220 (Refer to Note 2).
/ b = ”.
8. Press the [YES] button and display “
± knob in the counterclockwise di9. Rotate the [ AMS ]
≠
rection and find the focus bias value at which the C1 error rate
becomes 220.
10. Press the [YES] button and display “
/ c = ”.
11. Check that the C1 error rate is below 50 and ADER is 00.
Then press the [YES] button.
12. If the “( )” in “ - - ( )” is above 20, press the [YES]
button.
If below 20, press the [MENU/NO] button and repeat the adjustment from step 2.
13. Press the [ EJECT]
button to remove the test disc.
§
Note 1: The relation between the C1 error and focus bias is as
shown in the following figure. Find points a and b in the following figure using the above adjustment. The focal point position
C is automatically calculated from points a and b.
Note 2: As the C1 error rate changes, perform the adjustment using the
average vale.
(Traverse Waveform)
A
VC
B
Specification A = B
– 29 –
C1 error
220
b
c
a
Focus bias value
(F. BIAS)
13. ERROR RATE CHECK
15. AUTO GAIN CONTROL OUTPUT LEVEL
ADJUSTMENT
13-1. CD Error Rate Check
Checking Procedure :
1. Load a check disc (MD) TDYS-1.
± knob and display “CPLAY MODE”
≠
2. Rotate the [ AMS ]
(C30).
3. Press the [YES] button twice and display “CPLAY MID”.
4. The display changes to “C =
AD = ”.
5. Check that the C1 error rate is below 20.
6. Press the [MENU/NO] button, stop playback, press the
[ EJECT]
button, and remove the test disc.
§
13-2. MO Error Rate Check
Checking Procedure :
1. Load a test disc (MDW-74/AU-1).
± knob and display “CPLAY MODE”
2. Rotate the [ AMS ]
≠
(C30).
3. Press the [YES] button and display “CPLAY MID”.
4. The display changes to “C1 =
AD = ”.
5. If the C1 error rate is below 50, check that ADER is 00.
6. Press the [MENU/NO] button, stop playback, press the
[ EJECT]
button, and remove the test disc.
§
14. FOCUS BIAS CHECK
Change the focus bias and check the focus tolerance amount.
Checking Procedure :
1. Load a test disc (MDW-74/AU-1).
± knob and display “CPLAY MODE”
≠
2. Rotate the [ AMS ]
(C30).
3. Press the [YES] button twice and display “CPLAY MID”.
AD = ” is
4. Press the [MENU/NO] button when “C =
displayed.
± knob and display “FBIAS CHECK”
≠
5. Rotate the [ AMS ]
(C05).
6. Press the [YES] button and display “
/ c = ”.
The first four digits indicate the C1 error rate, the two digits
after [/] indicate ADER, and the 2 digits after [c =] indicate
the focus bias value.
Check that the C1 error is below 50 and ADER is below 2.
7. Press the [YES] button and display “
/ b = ”.
Check that the C1 error is below 220 and ADER is below 2.
/ a = ”.
8. Press the [YES] button and display “
Check that the C1 error is below 220 and ADER is below 2
9. Press the [MENU/NO] button, next press the [ EJECT]
but§
ton, and remove the continuously recorded disc.
Be sure to perform this adjustment when the pickup is replaced.
If the adjustment results becomes “Adjust NG!”, the pickup may
be faulty or the servo system circuits may be abnormal.
15-1. CD Auto Gain Control Output Level Adjustment
Adjusting Procedure :
1. Insert the check disc (MD) TDYS-1.
± knob to display “AG Set (CD)”
≠
2. Rotate the [ AMS ]
(C26).
3. When the [YES] button is pressed, the adjustment will be performed automatically.
“Complete!!” will then be displayed momentarily when the
value is recorded in the non-volatile memory, after which the
display changes to “AG Set (CD)”.
4. Press the [ EJECT]
button to remove the disc.
§
15-2. MO Auto Gain Control Output Level Adjustment
Adjusting Procedure :
1. Insert the reference disc (MDW-74/AU-1) for recording.
2. Rotate the [ AMS ]
± knob to display “AG Set (MO)”
≠
(C25).
3. When the [YES] button is pressed, the adjustment will be performed automatically.
“Complete!!” will then be displayed momentarily when the
value is recorded in the non-volatile memory, after which the
display changes to “AG Set (MO)”.
4. Press the [ EJECT]
button to remove the disc.
§
Note 1: If the C1 error and ADER are above other than the specified
value at points a (step 8. in the above) or b (step 7. in the above),
the focus bias adjustment may not have been carried out properly. Adjust perform the beginning again.
– 30 –
16. ADJUSTING POINTS AND CONNECTING POINTS
[BD BOARD] (SIDE A)
CN101
D101
GND
I+3V
IOP
CN110
TE
RF
VC
NOTE
IC171
[BD BOARD] (SIDE B)
IC101
IC121
IC192
Note: It is useful to use the jig. for checking the waveform. (Refer to
Servicing Notes on page 6.)
– 31 –
SECTION 6
DIAGRAMS
6-1. IC PIN FUNCTION DESCRIPTION
• BD BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No.
Pin Name
I/O
Function
1
I
I
I-V converted RF signal I input from the optical pick-up block detector
2
J
I
I-V converted RF signal J input from the optical pick-up block detector
3
VC
O
Middle point voltage (+1.65V) generation output terminal
4 to 9
A to F
I
Signal input from the optical pick-up detector
10
PD
I
Light amount monitor input from the optical pick-up block laser diode
11
APC
O
Laser amplifier output terminal to the automatic power control circuit
12
APCREF
I
Reference voltage input terminal for setting laser power
13
GND
—
Ground terminal
14
TEMPI
I
Connected to the temperature sensor
15
TEMPR
O
Output terminal for a temperature sensor reference voltage
16
SWDT
I
Writing serial data input from the CXD2654R (IC121)
17
SCLK
I
Serial data transfer clock signal input from the CXD2654R (IC121)
18
XLAT
I
Serial data latch pulse signal input from the CXD2654R (IC121)
19
XSTBY
I
Standby signal input terminal “L”: standby (fixed at “H” in this set)
20
F0CNT
I
Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input
from the CXD2654R (IC121)
21
VREF
O
Reference voltage output terminal Not used (open)
22
EQADJ
I
Center frequency setting terminal for the internal circuit (EQ)
23
3TADJ
I
Center frequency setting terminal for the internal circuit (BPF3T)
24
VCC
—
25
WBLADJ
I
Center frequency setting terminal for the internal circuit (BPF22)
26
TE
O
Tracking error signal output to the CXD2654R (IC121)
27
CSLED
I
Connected to the external capacitor for low-pass filter of the sled error signal
28
SE
O
Sled error signal output to the CXD2654R (IC121)
29
ADFM
O
FM signal output of the ADIP
30
ADIN
I
Receives a ADIP FM signal in AC coupling
31
ADAGC
I
Connected to the external capacitor for ADIP AGC
32
ADFG
O
ADIP duplex signal (22.05 kHz ± 1 kHz) output to the CXD2654R (IC121)
33
AUX
O
Auxiliary signal (I3 signal/temperature signal) output to the CXD2654R (IC121)
34
FE
O
Focus error signal output to the CXD2654R (IC121)
35
ABCD
O
Light amount signal (ABCD) output to the CXD2654R (IC121)
36
BOTM
O
Light amount signal (RF/ABCD) bottom hold output to the CXD2654R (IC121)
37
PEAK
O
Light amount signal (RF/ABCD) peak hold output to the CXD2654R (IC121)
38
RF
O
Playback EFM RF signal output to the CXD2654R (IC121)
39
RFAGC
I
Connected to the external capacitor for RF auto gain control circuit
40
AGCI
I
Receives a RF signal in AC coupling
41
COMPO
O
User comparator output terminal Not used (open)
42
COMPP
I
User comparator input terminal Not used (fixed at “L”)
43
ADDC
I
Connected to the external capacitor for cutting the low band of the ADIP amplifier
44
OPO
O
User operational amplifier output terminal Not used (open)
45
OPN
I
User operational amplifier inversion input terminal Not used (fixed at “L”)
46
RFO
O
RF signal output terminal
47
MORFI
I
Receives a MO RF signal in AC coupling
48
MORFO
O
MO RF signal output terminal
Power supply terminal (+3.3V)
– 32 –
• BD BOARD IC121 CXD2654R
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER)
Pin No.
Pin Name
I/O
Function
1
MNT0 (FOK)
O
Focus OK signal output to the system controller (IC800)
“H” is output when focus is on (“L”: NG)
2
MNT1 (SHOCK)
O
Track jump detection signal output to the system controller (IC800)
3
MNT2 (XBUSY)
O
Busy monitor signal output to the system controller (IC800)
4
MNT3 (SLOCK)
O
Spindle servo lock status monitor signal output to the system controller (IC800)
5
SWDT
I
Writing serial data signal input from the system controller (IC800)
6
SCLK
I (S)
Serial data transfer clock signal input from the system controller (IC800)
7
XLAT
I (S)
Serial data latch pulse signal input from the system controller (IC800)
8
SRDT
O (3)
Reading serial data signal output to the system controller (IC800)
9
SENS
O (3)
Internal status (SENSE) output to the system controller (IC800)
10
XRST
I (S)
Reset signal input from the system controller (IC800) “L”: reset
11
SQSY
O
Subcode Q sync (SCOR) output to the system controller (IC800)
“L” is output every 13.3 msec Almost all, “H” is output
12
DQSY
O
Digital In U-bit CD format subcode Q sync (SCOR) output to the system controller (IC800)
“L” is output every 13.3 msec Almost all, “H” is output
13
RECP
I
Laser power selection signal input from the system controller (IC800)
“H”: recording mode, “L”: playback mode
14
XINT
O
Interrupt status output to the system controller (IC800)
15
TX
I
Recording data output enable signal input from the system controller (IC800)
Writing data transmission timing input (Also serves as the magnetic head on/off output)
16
OSCI
I
System clock signal (512Fs=22.5792 MHz) input from the D/A converter (IC200)
17
OSCO
O
System clock signal (512Fs=22.5792 MHz) output terminal Not used (open)
18
XTSL
I
Input terminal for the system clock frequency setting
“L”: 45.1584 MHz, “H”: 22.5792 MHz (fixed at “H” in this set)
19
DIN0
I
Digital audio signal input terminal when recording mode (for digital optical in/digital coaxial in)
20
DIN1
I
Digital audio signal input terminal when recording mode Not used (fixed at “L”)
21
DOUT
O
Digital audio signal output terminal when playback mode (for digital optical out/digital coaxial
out)
22
DATAI
I
Serial data input terminal Not used (fixed at “L”)
23
LRCKI
I
L/R sampling clock signal (44.1 kHz) input terminal Not used (fixed at “L”)
24
XBCKI
I
Bit clock signal (2.8224 MHz) input terminal Not used (fixed at “L”)
25
ADDT
I
Recording data input from the A/D converter (IC100)
26
DADT
O
Playback data output to the D/A converter (IC200)
27
LRCK
O
L/R sampling clock signal (44.1 kHz) output to the A/D converter (IC100) and D/A converter
(IC200)
28
XBCK
O
Bit clock signal (2.8224 MHz) output to the A/D converter (IC100) and D/A converter (IC200)
29
FS256
O
Clock signal (11.2896 MHz) output terminal Not used (open)
30
DVDD
—
Power supply terminal (+3.3V) (digital system)
31 to 34
A03 to A00
O
Address signal output to the D-RAM (IC124)
35
A10
O
Address signal output to the external D-RAM Not used (open)
36 to 40
A04 to A08
O
Address signal output to the D-RAM (IC124)
41
A11
O
Address signal output to the external D-RAM Not used (open)
42
DVSS
—
Ground terminal (digital system)
43
XOE
O
Output enable signal output to the D-RAM (IC124) “L” active
44
XCAS
O
Column address strobe signal output to the D-RAM (IC124) “L” active
* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
– 33 –
Pin No.
Pin Name
I/O
45
A09
O
46
XRAS
O
Row address strobe signal output to the D-RAM (IC124)
47
XWE
O
Write enable signal output to the D-RAM (IC124)
48
D1
I/O
49
D0
I/O
50
D2
I/O
51
D3
I/O
52
MVCI
I (S)
53
ASYO
O
54
ASYI
I (A)
55
AVDD
—
56
BIAS
I (A)
57
RFI
I (A)
58
AVSS
—
59
PCO
O (3)
Phase comparison output for master clock of the recording/playback EFM master PLL
60
FILI
I (A)
Filter input for master clock of the recording/playback master PLL
61
FILO
O (A) Filter output for master clock of the recording/playback master PLL
62
CLTV
I (A)
Internal VCO control voltage input of the recording/playback master PLL
63
PEAK
I (A)
Light amount signal (RF/ABCD) peak hold input from the CXA2523AR (IC101)
64
BOTM
I (A)
Light amount signal (RF/ABCD) bottom hold input from the CXA2523AR (IC101)
65
ABCD
I (A)
Light amount signal (ABCD) input from the CXA2523AR (IC101)
66
FE
I (A)
Focus error signal input from the CXA2523AR (IC101)
67
AUX1
I (A)
Auxiliary signal (I3 signal/temperature signal) input from the CXA2523AR (IC101)
I (A)
Middle point voltage (+1.65V) input from the CXA2523AR (IC101)
68
VC
69
ADIO
70
AVDD
Function
Address signal output to the D-RAM (IC124)
Two-way data bus with the D-RAM (IC124)
Digital in PLL oscillation input from the external VCO
Not used (fixed at “L”)
Playback EFM full-swing output terminal
Playback EFM asymmetry comparator voltage input terminal
Power supply terminal (+3.3V) (analog system)
Playback EFM asymmetry circuit constant current input terminal
Playback EFM RF signal input from the CXA2523AR (IC101)
Ground terminal (analog system)
O (A) Monitor output of the A/D converter input signal
—
“L” active
“L” active
Not used (open)
Power supply terminal (+3.3V) (analog system)
71
ADRT
I (A)
A/D converter operational range upper limit voltage input terminal (fixed at “H” in this set)
72
ADRB
I (A)
A/D converter operational range lower limit voltage input terminal (fixed at “L” in this set)
73
AVSS
—
74
SE
I (A)
Sled error signal input from the CXA2523AR (IC101)
Ground terminal (analog system)
75
TE
I (A)
Tracking error signal input from the CXA2523AR (IC101)
76
DCHG
I (A)
Connected to the +3.3V power supply
77
APC
I (A)
Error signal input for the laser automatic power control
78
ADFG
I (S)
79
F0CNT
O
Filter f0 control signal output to the CXA2523AR (IC101)
80
XLRF
O
Serial data latch pulse signal output to the CXA2523AR (IC101)
81
CKRF
O
Serial data transfer clock signal output to the CXA2523AR (IC101)
82
DTRF
O
Writing serial data output to the CXA2523AR (IC101)
83
APCREF
O
Control signal output to the reference voltage generator circuit for the laser automatic power
control
84
LDDR
O
PWM signal output for the laser automatic power control
85
TRDR
O
Tracking servo drive PWM signal (–) output to the BH6511FS (IC152)
Not used (fixed at “H”)
ADIP duplex FM signal (22.05 kHz ± 1 kHz) input from the CXA2523AR (IC101)
Not used (open)
86
TFDR
O
Tracking servo drive PWM signal (+) output to the BH6511FS (IC152)
87
DVDD
—
Power supply terminal (+3.3V) (digital system)
88
FFDR
O
Focus servo drive PWM signal (+) output to the BH6511FS (IC152)
89
FRDR
O
Focus servo drive PWM signal (–) output to the BH6511FS (IC152)
90
FS4
O
Clock signal (176.4 kHz) output terminal (X’tal system)
Not used (open)
* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
– 34 –
Pin No.
Pin Name
I/O
Function
91
SRDR
O
Sled servo drive PWM signal (–) output to the BH6511FS (IC152)
92
SFDR
O
Sled servo drive PWM signal (+) output to the BH6511FS (IC152)
93
SPRD
O
Spindle servo drive PWM signal (–) output to the BH6511FS (IC152)
94
SPFD
O
Spindle servo drive PWM signal (+) output to the BH6511FS (IC152)
95
FGIN
I (S)
96
TEST1
I
97
TEST2
I
98
TEST3
I
99
DVSS
—
Ground terminal (digital system)
100
EFMO
O
EFM signal output terminal when recording mode
Input terminal for the test (fixed at “L”)
* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
– 35 –
• MAIN BOARD IC100 CXD8607N (A/D CONVERTER)
Pin No.
Pin Name
I/O
Function
1
INRP
I
R-ch analog signal (–) input terminal
2
INRM
I
R-ch analog signal (+) input terminal
3
REFI
I
Reference voltage (+3.3V) input terminal (for A/D converter section)
4
AVDD
—
Power supply terminal (+5V) (for A/D converter section, analog system)
5
AVSS
—
Ground terminal (for A/D converter section, analog system)
6
APD
I
7
NU
—
Not used (open)
8
NU
—
Not used (open)
9
TEST1
I
Input terminal for the test (fixed at “L”)
10
LRCK1
I
L/R sampling clock signal (44.1 kHz) input from the CXD2654R (IC121) (for A/D converter
section)
11
BCK1
I
Bit clock signal (2.8224 MHz) input from the CXD2654R (IC121) (for A/D converter section)
12
ADDT
O
Recording data output to the CXD2654R (IC121)
13
V35A
—
Power supply terminal (+3.3V) (for analog system)
14
VSS1
—
Ground terminal (for A/D converter section, digital system)
15
MCKI
I
Master clock (256Fs=11.2896 MHz) input of the A/D converter section
16
DPD
I
Reset signal input from the system controller (IC800) Reset signal is used as a detection signal
of power down to A/D converter section (digital section) “L”: reset (power down)
17
VSS2
—
18
RES
I
Reset signal input terminal Reset signal is used as a initialize signal to D/A converter section
“L”: reset (initialize) Not used D/A converter section in this set
19
MODE
I
Writing data input terminal Not used (fixed at “L”)
20
SHIFT
I
Serial clock signal input terminal Not used (fixed at “L”)
21
XLATCH
I
Serial data latch pulse signal input terminal Not used (fixed at “L”)
22
256CK
O
256Fs (11.2896 MHz) clock signal output terminal Not used (open)
23
V35D
—
Power supply terminal (+3.3V) (for digital system) Not used (open)
24
VSS2
—
Ground terminal (for D/A converter section, digital system)
25
512FS
O
512Fs (22.5792 MHz) clock signal output terminal Not used (pull down)
26
BCK2
I
Bit clock signal (2.8224 MHz) input terminal (for D/A converter section)
Not used (fixed at “L”)
27
DADT
I
Playback data input terminal Not used (fixed at “L”)
28
LRCK2
I
L/R sampling clock signal (44.1 kHz) input terminal (for D/A converter section)
Not used (fixed at “L”)
29
VDD2
—
Power supply terminal (+5V) (for D/A converter section, digital system)
Not used (fixed at “L”)
30
R1
O
R-ch PLM signal 1 output terminal Not used (open)
31
AVDDR
—
Power supply terminal (+5V) (for R-ch side D/A converter section, analog system)
Not used (fixed at “L”)
32
R2
O
R-ch PLM signal 2 output terminal Not used (open)
33
AVSSR
—
Ground terminal (for R-ch side D/A converter section, analog system)
34
XVDD
—
Power supply terminal (+5V) (for X’tal system) Not used (open)
35
XOUT
O
System clock output terminal (22 MHz) Not used (open)
36
XIN
I
System clock input terminal (22 MHz) Not used (fixed at “L”)
37
XVSS
—
Ground terminal (for X’tal system)
38
AVSSL
—
Ground terminal (for L-ch side D/A converter section, analog system)
39
L2
O
L-ch PLM signal 2 output terminal Not used (open)
Power down detection input of the A/D converter section (for analog section) “L”: power down
Ground terminal (for D/A converter section, digital system)
– 36 –
Pin No.
Pin Name
I/O
Function
40
AVDDL
—
Power supply terminal (+5V) (for L-ch side D/A converter section, analog system)
Not used (open)
41
L1
O
L-ch PLM signal 1 output terminal
42
VDD2
—
Power supply terminal (+5V) (for L-ch side D/A converter section, digital system)
Not used (open)
43, 44
VDD1
—
Power supply terminal (+5V) (for A/D converter section, digital system)
45
VSS1
—
Ground terminal (for A/D converter section, digital system)
46
TEST2
I
Input terminal for the test (fixed at “L”)
47
TEST3
I
Input terminal for the test (fixed at “L”)
48
VSS1
—
Ground terminal (for A/D converter section, digital system)
49
NU
—
Not used (open)
50
NU
—
Not used (open)
51
AVSS
—
Ground terminal (for A/D converter section, analog system)
52
LVDD
—
Power supply terminal (+5V) (for A/D converter section, buffer system)
53
LVSS
—
Ground terminal (for A/D converter section, buffer system)
54
REFO
O
Reference voltage (+3.3V) output terminal (for A/D converter section)
55
INLM
I
L-ch analog signal (+) input terminal
56
INLP
I
L-ch analog signal (–) input terminal
– 37 –
Not used (open)
• MAIN BOARD IC800 M30610MCA-264FP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Function
1
JOG1
I
JOG dial pulse input from the rotary encoder (S713 ≠ AMS ±)
2
JOG0
I
JOG dial pulse input from the rotary encoder (S713 ≠ AMS ±)
3
C1
O
Monitor output terminal for the test C1 error rate is output when test mode
4
ADER
O
Monitor output terminal for the test ADER is output when test mode
5
SQSY
I
Subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec Almost all, “H” is input
6
RMC
I
Remote control signal input from the remote control receiver (IC761)
7
AIN1
I
Sircs remote control signal input of the S-LINK CONTROL A1
8
BYTE
I
External data bus line byte selection signal input “L”: 16 bit, “H”: 8 bit (fixed at “L”)
—
9
CNVSS
10
XT-IN
I
Sub system clock input terminal (32.768 kHz)
11
XT-OUT
O
Sub system clock output terminal (32.768 kHz)
12
S.RST
I
System reset signal input from the LA5632 (IC700) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13
XOUT
O
Main system clock output terminal (7 MHz)
14
GND
—
Ground terminal
15
XIN
I
16
+3.3V
—
17
NMI
I
Non-maskable interrupt input terminal (fixed at “H” in this set)
18
DQSY
I
Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec Almost all, “H” is input
19
P.DOWN
I
Power down detection signal input terminal “L”: power down, normally: “H”
20
XINT
I
Interrupt status input from the CXD2654R (IC121)
21
DVOL1
I
Digital rec level volume input terminal
22
DVOL0
I
Digital rec level volume input terminal
23 to 30
NC
I
Not used (fixed at “L”)
31
SWDT
O
Writing data output to the CXD2654R (IC121) and D/A converter (IC200)
32
SRDT
I
Reading data input from the CXD2654R (IC121)
33
SCLK
O
Serial clock signal output to the CXD2654R (IC121) and D/A converter (IC200)
34
FLCS
O
Chip select signal output to the FL/LED driver (IC771)
35
FLDATA
O
Serial data output to the FL/LED driver (IC771)
36
NC
I
Not used (fixed at “L”)
37
FLCLK
O
Serial data transfer clock signal output to the FL/LED driver (IC771)
38 to 47
NC
I
Not used (fixed at “L”)
48
CSET0
I
Destination setting terminal (US, Canadian models: fixed at “L”, AEP, UK models: fixed at “H”)
49
CSET1
I
Destination setting terminal (US, Canadian models: fixed at “H”, AEP, UK models: fixed at “L”)
50
XINSW
I
Setting terminal of the loading control system select (fixed at “H” in this set)
51
NC
I
Not used (fixed at “L”)
52
MNT2 (XBUSY)
I
Busy signal input from the CXD2654R (IC121)
53
DIG-RST
O
Reset signal output to the CXD2654R (IC121) and BH6511FS (IC152) “L”: reset
54
MNT1 (SHOCK)
I
Track jump detection signal input from the CXD2654R (IC121)
Ground terminal
Main system clock input terminal (7 MHz)
Power supply terminal (+3.3V)
55
SENS
I
Internal status (SENSE) input from the CXD2654R (IC121)
56
LDON
O
Laser diode on/off control signal output to the automatic power control circuit “H”: laser on
57
REFLECT
I
Detection input from the disc reflection rate detect switch (S102)
“L”: high reflection rate disc, “H”: low reflection rate disc
58
PROTECT
I
Rec-proof claw detect input from the protect detect switch (S102) “H”: write protect
– 38 –
MDS-JB920
Pin No.
Pin Name
I/O
Function
Pin No.
Pin Name
I/O
59
WR-PWR
O
Laser power select signal output to the CXD2654R (IC121) and HF module switch circuit
“H”: recording mode, “L”: playback mode
60
MNT3 (SLOCK)
I
Spindle servo lock status monitor signal input from the CXD2654R (IC121)
61
SDA
I/O
Two-way data bus with the EEPROM (IC171)
62
+3.3V
—
63
NC
I
64
GND
—
Function
85
COAX/XOPT
O
Optical in 1/2 or coaxial in selection signal output to the digital input selector (IC300)
“L”: OPT 1/2, “H”: COAXIAL
86
OPT2/XOPT1
O
Optical in 1 or optical in 2 selection signal output to the digital input selector (IC300)
“L”: OPT 1, “H”: OPT 2
Power supply terminal (+3.3V)
87
DALATCH
O
Serial data latch pulse signal output to the D/A converter (IC200)
Not used (fixed at “L”)
88
DARST
O
Reset signal output to the A/D converter (IC100) and D/A converter (IC200) “L”: reset
Ground terminal
89
LED0
O
LED drive signal output terminal
Not used (pull down)
LED1
O
LED drive signal output terminal
Not used (pull down)
65
SCTX
O
Recording data output enable signal output to the CXD2654R (IC121) and overwrite head
driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off
output)
90
91
TIMER
I
TIMER switch (S751) input terminal (A/D input)
“L”: PLAY, “H”: REC (OFF: center voltage)
66
SCL
O
Clock signal output to the EEPROM (IC171)
92
SOURCE
I
INPUT switch (S741) input terminal (A/D input)
67
MNT0 (FOK)
I
Focus OK signal input from the CXD2654R (IC121)
“H” is input when focus is on (“L”: NG)
93
KEY3
I
Key input terminal (A/D input)
CONTROL keys input)
68
LIMIT-IN
I
Detection input from the sled limit-in detect switch (S101)
The optical pick-up is inner position when “L”
94
KEY2
I
Key input terminal (A/D input) S722 to S726 (PLAY/MODE, REPEAT, SCROLL/CLOCK
SET, DISPLAY/CHAR, I/u keys input)
95
KEY1
I
Key input terminal (A/D input)
EJECT keys input)
96
AVSS
—
97
KEY0
I
Key input terminal (A/D input)
98
VREF
I
Reference voltage (+3.3V) input terminal (for A/D converter)
99
+3.3V
—
MONO/ST
I
Laser modulation select signal output to the HF module switch circuit
Playback power: “H”, Stop: “L”,
Recording power:
0.5 sec
69
MOD
O
100
S731 to S734 (TIME, FADER, MUSIC SYNC, MEGA
S711 to S714 and S716 (MENU/NO, YES, PUSH ENTER, §
Ground terminal
S701 to S706 (r REC, p, ), 0, P, · keys input)
Power supply terminal (+3.3V) (for analog system )
REC MODE switch (S746) input terminal
2 sec
70
XLATCH
O
Serial data latch pulse signal output to the CXD2654R (IC121)
71
NC
I
Not used (fixed at “L”)
72
REC/PB
I
Not used (fixed at “L”)
73
PACK-IN
I
Detection input from the disc detect switch Not used (fixed at “L”)
74
PB-P
I
Detection input from the playback position detect switch (S604) “L” active
75
CHACK IN
I
Detection input from the disc chucking-in detect switch (S603)
76
PACK-OUT
I
Detection input from the loading-out detect switch (S602)
“L” at a load-out position, others: “H”
77
REC-P
I
Detection input from the recording position detect switch (S601) “L” active
78
LDIN
O
Motor control signal output to the loading motor driver (IC400) “L” active *1
79
LDOUT
O
Motor control signal output to the loading motor driver (IC400) “L” active *1
80
LD-LOW
O
Loading motor drive voltage control signal output for the loading motor driver (IC400)
“H” active
81
NC
I
Not used (fixed at “L”)
82
A1OUT
O
Sircs remote control signal output of the S-LINK CONTROL A1
83
MUTE
O
Audio line muting on/off control signal output terminal “L”: line muting on
84
STB
O
Strobe signal output to the power supply circuit “H”: power on, “L”: standby mode
“L”: chucking
*1 Loading motor (M103) control
Mode
LOADING
EJECT
BRAKE
RUN IDLE
LDIN (pin &•)
“L”
“H”
“L”
“H”
LDOUT (pin &ª)
“H”
“L”
“L”
“H”
Terminal
– 39 –
– 40 –
“L”: MONO, “H”: STEREO
MDS-JB920
6-2. BLOCK DIAGRAM – SERVO Section –
15
TX
OVER WRITE
HEAD DRIVE
IC181, Q181, 182
MORFI
54
46
40
AGCI
RF
RF AGC
& EQ
57
38
ATRAC
ENCODER/DECODER
DIGITAL IN
DIGITAL OUT
EQ
XBCK
LRCK
FS256
33
WBL
TEMP
PEAK
PEAK &
BOTTOM
BOTM
ADIN
ADFG
B
OSCI
CLOCK
GENERATOR
37
OSCO
E
8
9
F
FE
FOCUS
ERROR AMP
E
F
TE
TRACKING
ERROR AMP
I-V
AMP
SE
34
79
F0CNT
26
28
CPU
INTERFACE
SPINDLE
SERVO
94 93 10
LASER DIODE
12
11
14
9 8
SWDT
SCLK
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC152
18 5 20 55 32
31 33 70
67 54 52 60
MNT0 (FOK)
MNT1 (SHOCK)
MNT2 (XBUSY)
MNT3 (SLOCK)
OPTICAL PICK-UP
(KMS-260A/J1N)
56 LDON
PSB 16
13
RECP
83
M102
(SLED)
(FOCUS)
FCS+
M
27 OUT2F
25 OUT2R
21 OUT1F
23 OUT1R
IN2F 29
IN2R 30
IN1F 19
IN1R 18
APCREF
AUTOMATIC
POWER
CONTROL
SFDR
92
SRDR
91
FFDR
88
FRDR
89
TRK+
TRK–
12 OUT3F
10 OUT3R
IN3F 14
IN3R 15
TFDR
86
TRDR
85
DIGITAL SERVO
SIGNAL PROCESSOR
IC121 (2/2)
LDOUT
78
79
512FS
E
(Page 43)
F
(Page 43)
16 XOE
3 XWE
4 XRAS
17 XCAS
46
44
• SIGNAL PATH
: PLAY (ANALOG OUT)
: PLAY (DIGITAL OUT)
: REC (ANALOG IN)
: REC (DIGITAL IN)
SYSTEM CONTROLLER
IC800 (1/2)
LOADING
MOTOR DRIVE
IC400
VZ 4
OUT1 OUT2
2
REFERENCE
VOLTAGE SWITCH
Q400, 401
B+
PACK-OUT 76
CHACK IN 75
10
80 LD-LOW
PB-P 74
M
FROM CPU
INTERFACE
M103
(LOADING)
XLRF
CKRF
DTRF
S101
(LIMIT IN)
S601
(REC POSITION)
S602
(PACK OUT)
S603
(CHUCKING IN)
S604
(PLAY POSITION)
REFLECT 57
PROTECT 58
XLAT
80
SCLK
81
SWDT
82
S102
(REFLECT/PROTECT DETECT)
HIGH REFELECT RATE/
WRITE PROTECT
HF MODULE
SWITCH
IC103, Q102 – 104
LOW REFELECT RATE/
UN-PROTECT
MOD
05
– 41 –
43
47
REC-P 77
6
IN2
5
IN1
ANALOG MUX
AUTO
SEQUENCER
FCS–
(Page 43)
D-RAM
IC124
LIMIT-IN 68
A/D CONVERTER
DIGITAL
SERVO
SIGNAL
PROCESS
D
SCTX 65
67 65 66 75 74 63 64
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
SPFD
SPRD
PWM GENERATOR
M
IN4R 3
IN4F 4
LDIN
69 MOD
6 OUT4F
8 OUT4R
17
512FS
OSC
IC123
53 DIG-RST
59 WR-PWR
M101
(SPINDLE)
16
SWDT, SCLK
16 17 18
SWDT
SCLK
XLATCH
20
XINT
SENS
SRDT
12
XOE
XWE
XRAS
XCAS
SWDT
SCLK
XLAT
PD
F0CNT
10
APCREF
LASER ON
SWITCH
Q101
PD
(TRACKING)
D0 – D3
FOK
SHOCK
XBUSY
SLOCK
SERIAL/
PARALLEL
CONVERTER,
DECODER
SQSY
LD/PD
AMP
V-I
CONVERTER
HF MODULE
1 2 3 4
DQSY
APC
11
WBL
3T
EQ
AUTOMATIC
POWER
CONTROL
Q162, 163
LD
2-AXIS
DEVICE
5 6 7
MONITOR
CONTROL
COMMAND
ILCC
PD
35
A00 – A09
ABCD
ABCD
AMP
78
32
MNT0
MNT1
MNT2
MNT3
C
D
I-V
AMP
30
SWDT
SCLK
XLAT
DETECTOR
29
B.P.F.
SENS
SRDT
E
A
B
C
D
INTERNAL BUS
XINT
4
5
6
7
SUBCODE
PROCESSOR
ADIP
DEMODULATOR/
DECODER
SQSY
A
ADFM
AT
AMP
XRST
DQSY
J
SPRD
A
SPFD
D
ADFG
I
B
(Page 44)
36
WBL
C
C
28 27 29
AUX
3T
(Page 44)
26
DADT, BCK, LRCK
B.P.F.
F
B
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
IC121 (1/2)
DIN0
19
DIN1
20
DOUT
21
DADT
COMPARATOR
RFI
DIGITAL
AUDIO
INTERFACE
(Page 43)
1, 2, 18, 19
DQ1 – DQ4
RFO
SAMPLING
XBCKI
RATE
24
CONVERTER LRCKI
23
A
6 – 9, 11 – 15, 5
A0 – A9
RF AMP
ASYI
22
49, 48, 50, 51
MORFO
53
ASYO
ADDT
25
34 – 31, 36 – 40, 45
2
I
J
PLL
SHOCK PROOF
MEMORY CONTROLLER
FILTER
1
FILI
60
PCO
59
CLTV
62
FILO
61
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
48 47
I
ADDT
DATAI
SCTX
J
EFMO
EFM/ACIRC
ENCODER/DECODER
HR901
OVER WRITE HEAD
100
IC121 (1/2)
– 42 –
MDS-JB920
6-3. BLOCK DIAGRAM – MAIN Section –
• SIGNAL PATH
: PLAY (ANALOG OUT)
: PLAY (DIGITAL OUT)
: REC (ANALOG IN)
: REC (DIGITAL IN)
BUFFER
IC101
VREF
A/D CONVERTER
IC100
∆Σ
MODULATOR
INLM
INRP
+
–
INRM
56
13
55
12
1
R-CH
2
R-CH
AOUTL–
AOUTL+
ANALOG
REC LEVEL
AINL+
+
–
AINL–
LINE AMP
IC103
L
R-CH
NOISE
SHAPER &
REGISTER
(Page 42)
MODE
CONTROL
INIT
L
CLOCK
BUFFER
LATCH
8
R-CH
R
COAX 4
XOUT
S-LINK
CONTROL A1
29
X200
45MHz
2
SEL0
14
J300
DIGITAL
COAXIAL IN
C
DIGITAL
OUT
SIRCS
BUFFER
Q800
HEADPHONE
AMP
IC790
WAVE
SHAPER
IC305
5
6
J790
J301
PHONES
DIGITAL
COAXIAL OUT
11
10
86 85
XT-IN
OPT2/XOPT1
COAX/XOPT
12 84
15
XT-OUT
19
13
XIN
DVOL0
DVOL1
92 91
83
XOUT
SCL
100
X801
32.768kHz
X800
7MHz
MUTE
SDA
S.RST
STB
97, 95 – 93
P.DOWN
1
22 21
TIMER
A1IN
2
66
SOURCE
A1OUT
KEY0 – KEY3
35 37 34
61
MONO/ST
7
JOG1
82
JOG0
88
SYSTEM CONTROLLER
IC800 (2/2)
T701
POWER
TRANSFORMER
+3.3V
D758
MEGA
CONTROL
LED DRIVE
Q758
A
COM23
AD1 – AD3
COM01 – COM22
72 74
3 – 37
79, 80, 1
39 – 60
+5V
D/A CONVERTER (IC200) B+
(FOR ANALOG SECTION)
3
ROTARY
ENCODER
4
GND
SW
S746
REC MODE
5
61 62
STEREO
FL DRIVE
Q781, 782
MONO
FLUORESCENT
INDICATOR TUBE
FL781
+5V
REGULATOR
IC205
S751
TIMER
REC
OFF
G01 – G22
SEG36 – SEG38
LED DRIVE
Q756
SEG01 – SEG35
SEG01 – SEG35
D756
STANDBY
P1
P3
66 OSCO
G24
OSC
COM24
RESET 67
FL/LED DRIVER
IC771
G23
DA
CP
CS
65 OSCI
1
B
70 69 68
C772, R772
+5V
A/D CONVERTER (IC100) B+
(FOR ANALOG SECTION)
+5V
REGULATOR
IC102
+7V
+7V
REGULATOR
IC703
–7V
–7V
REGULATOR
IC702
AUDIO
CIRCUIT
–32V
(FL DRIVER (IC771) B–)
–32V
REGULATOR
IC701
PLAY
S713
T301
D703
D704
87
OPTICAL
TRANSCEIVER
IC304
R-CH
EEPROM
IC171
28
48 40
RV790
PHONE
LEVEL
MUTING
CONTROL SWITCH
Q702
5
FLDATA
FLCLK
FLCS
6 RMC
COAX 3
LINE OUT
(ANALOG)
(Page 42)
DARST
REMOTE CONTROL
RECEIVER
IC761
DIGITAL
OPTICAL IN2
DIGITAL
OPTICAL OUT
SWDT, SCLK
(Page 42)
(Page 42)
R-CH
MUTING
Q200 – 203
DALATCH
F
XIN
1024FS
CLOCK
BUFFER
64FSI
64FSO
ATT
SHIFT
7
SWDT
6
LOW-PASS
FILTER
IC243 (2/2)
MIX AMP
IC243 (1/2)
J800
CLOCK
GENERATOR
(Page 42)
BUFFER
IC241
CONTROL
CIRCUIT
SCLK
E
256FSO
43
LVCKO
41
512FS
1
2
5
4
SCL
TIMING
CONTROL
R1+
36
R1–
37
R2+
33
R2–
32
SWITCHING
CIRCUIT
I01+
I02–
I02+
I01–
SDA
MCLKI
47
128FSO
54
IN1+
25
IN1–
24
IN2+
27
IN2–
28
21
L1–
20
L2+
24
L2–
25
PLM & BUFFER
BCK
LRCK
2
4
FIR
L1+
ATT & L.I.P.
S/P
BCK
LRCK
OVERFLOW
DETECTOR
ATT & IIR
D
DADT,
BCK,
LRCK
OVFLAG
DATA
OPTICAL
RECEIVER
IC302
OPT2 5
WAVE
SHAPER
IC301
CURRENT PULSE
IC204
52
3
OUT
SEL1
DIGITAL
REC LEVEL
R-CH
DADT
LINE IN
(ANALOG)
R
7
RV760-3
16
D/A CONVERTER
IC200
DIGITAL
IN
B
DPD
15
J100
19
18
OPTICAL
RECEIVER
IC303
OPT1 6
RV760-1
+
–
SEL0
DECIMATION/
LOW-CUT
FILTER
INLP
+
–
SEL1
BCK1
11
LRCK1
10
MCKI
BCK
LRCK
∆Σ
MODULATOR
DIGITAL
OPTICAL IN 1
DIGITAL INPUT SELECTOR
IC300
SEL1
(Page 42)
DECIMATION/
LOW-CUT
FILTER
16
SEL0
A
ADDT
12
OUTPUT
INTERFACE
ADDT
VREFL
RECT
D715 – 718
AC
(TO FL781)
RECT
D706
LOADING MOTOR
DRIVER (IC400) B+
≠ AMS ±
PUSH ENTER
S701 – 706, 711, 712,
S714, 716, 722 – 726,
S731 – 734
S741
INPUT
ANALOG
+3.3V
MD MECHANISM DECK SECTION,
DIGITAL IN/OUT CIRCUIT B+
AC IN
+3.3V
REGULATOR
IC192
+5V
REGULATOR
IC705
RECT
D720, 721
+5V
MD MECHANISM DECK
SECTION B+
COAX (DIGITAL)
OPT1 (DIGITAL)
OPT2 (DIGITAL)
05
D700
D701
6
BACK UP +3.3V
BT701
LITHIUM
BATTERY
BACK
VCC 3
SYS +3.3V
+5V
A/D, D/A CONVERTER (IC100, 200) B+
(FOR DIGITAL SECTION)
5 SYS3.3
4 ANA5
REGULATOR
IC700
2 STBY
12 S.RESET
– 43 –
RECT
D711, 712
– 44 –
D710
POWER DOWN
DETECT
IC704
D709
• Circuit Boards Location
6-4.
AC board
SW board
BAT board
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specified.
•
%
: indicates tolerance.
¢
•
: internal component.
• C : panel designation.
Note:
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part
number specified.
HP board
PSW board
BD board
MAIN board
DISP board
VOL board
– 45 –
Note:
Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• U : B+ Line.
• V : B– Line.
• Voltages and waveforms are dc with respect to ground in
playback mode.
• Voltages are take
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