Sony MDS-JB730 User manual

MICROFILM
SERVICE MANUAL
MINIDISC DECK
AEP Model
UK Model
SPECIFICATIONS
MDS-JB730
Model Name Using Similar Mechanism MDS-JE520
MD Mechanism Type MDM-5D
Base Unit Type MBU-5D
Optical Pick-up Type KMS-260B/J1N
U.S. and foreign patents licensed form Dolby Laboratories
Licensing Corporation.

– 2 –
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 USINGTHE 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.
1. While pressing the [AMS] knob and pbutton, connect the power plug to the outlet, and release the [AMS] knob
and pbutton.
2. Turn the [AMS] knob and when “[Service]” is displayed, press the [YES] button.
3. Turn the [AMS] knob to display “ERR DP MODE”.
4. Press the [YES] button to sets the error history mode and displays “total rec”.
5. Select the contents to be displayed or executed using the [AMS] knob.
6. Press the [AMS] knob to display or execute the contents selected.
7. Press the [AMS] knob another time returns to step 4.
8. Press the [MENU/NO] button to display “ERROR DP MODE” and releases the error history mode.
9. To release the test mode, press the [REPEAT] button. The unit sets into the STANDBY state, the disc is ejected, and the test mode
ends.
±
≠
±
≠
[]
±
≠
±
≠
[]
±
≠
±
≠±
≠

– 3 –
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Selecting theTest Mode
Display Details of History
E00 No error
E01 Disc error. PTOC cannot be read
(DISC ejected)
E02 Disc error. UTOC error
(DISC not ejected)
E03 Loading error
E04 Address cannot be read (Servo has deviated)
Table of Error Codes
Error Code Error Code Details of Error
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 “0πE@@”.
πindicates 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 turning 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.
After pressing the [AMS] button and “er refresh?” is displayed, press the [YES] button to erase the
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 pick-up.
If the optical pickup has been replaced, perform this operation and erase the history.
After pressing the [AMS] button and “tm refresh?” is displayed, press the [YES] button to erase the
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.
±≠
±≠
±≠
E05 FOK has deviated
E06 Cannot focus (Servo has deviated)
E07 Recording retry
E08 Recording retry error
E09 Playback retry error
(Access error)
E0A Playback retry error (C2 error)
Details of Error

– 4 –
SECTION 1
SERVICING NOTES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Laser component in this product is capable of emitting radia-
tion exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
SAFETY-RELATED COMPONENT WARNING!!
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 PUB-
LISHED BY SONY.
TABLE OF CONTENTS
SELF-DIAGNOSIS FUNCTION.................................... 2
1. SERVICING NOTES............................................... 4
2. GENERAL ................................................................... 11
3. DISASSEMBLY ......................................................... 13
4. TEST MODE.............................................................. 17
5. ELECTRICAL ADJUSTMENTS......................... 22
6. DIAGRAMS
6-1. Block Diagram – SERVO Section – ............................... 31
6-2. Block Diagram – MAIN Section – ................................. 33
6-3. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 35
6-4. Printed Wiring Board – BD Board – ............................. 37
6-5. Schematic Diagram – BD Board (1/2) – ........................ 39
6-6. Schematic Diagram – BD Board (2/2) – ........................ 41
6-7. Schematic Diagram – SW Board –................................. 44
6-8. Printed Wiring Board – SW Board – .............................. 44
6-9. Printed Wiring Board – MAIN Board – ......................... 45
6-10. Schematic Diagram – MAIN Board (1/2) – ................... 47
6-11. Schematic Diagram – MAIN Board (2/2) – ................... 49
6-12. Printed Wiring Boards – PANEL Section – ................... 51
6-13. Schematic Diagram – PANEL Section –....................... 53
6-14. IC Pin Function Description ........................................... 58
7. EXPLODED VIEWS................................................ 65
8. ELECTRICAL PARTS LIST ............................... 69
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

– 5 –
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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 dam-
aged by heat.
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.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
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.

– 6 –
JIG FOR CHECKING BD BOARDWAVEFORM
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)
TEO : TRK error signal (Traverse adjustment)
VC : Reference level for checking the signal
RF : RF signal (Check jitter)
CN110
RF
5P Connector
6P connecto
r
VCTEO
IOP
I+3V
GND
Mechanism deck
RF
VC
TEO for
MDM-
3
for
MDM-5
IOP
I+3V
VC
RF
TEO
IOP
I+3V
GND
VC
RF
TEO
IOP
I+3V
GND
1
5
1
6

– 7 –
IOP DATA RECORDING AND DISPLAYWHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC171 OF
BD BOARD) ARE REPLACED
The IOP value labeled on the optical 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 optical pick-up label. When replacing the optical pick-up or non-volatile memory (IC171 of BD board), record
the IOP value on the optical pick-up according to the following procedure.
Record Procedure:
1. While pressing the [AMS] knob and pbutton, connect the power plug to the outlet, and release the [AMS] knob
and pbutton.
2. Turn the [AMS] knob to display “[Service]”, and press the [YES] button.
3. Turn the [AMS] knob to display “lop Write” (C28), 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 label.
To select the number : Turn the [AMS] knob.
To select the digit : Press the [AMS] knob.
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.
Display Procedure:
1. While pressing the [AMS] knob and pbutton, connect the power plug to the outlet, and release the[AMS] knob
and pbutton.
2. Turn the [AMS] knob to display “[Service]”, and press the [YES] button.
3. Turn the [AMS] knob to display “lop Read” (C27).
4. “@@.@/##.#” is displayed and the recorded contents are displayed.
@@.@: indicates the IOP value on the optical pick-up label.
##.# : indicates the IOP value after adjustment
5. To end, press the [AMS] knob or [MENU/NO] button to display “Iop Read”. Then press the [REPEAT] button.
[]
[]
±
≠
±
≠
±
≠
±
≠
±
≠
±
≠
±
≠
±
≠
±
≠
±
≠
[]
±
≠
[]

– 8 –
CHECKS PRIORTO 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”.
• 0.9 mW power
Specified value : 0.84 to 0.92 mW
• 7.0 mW power
Specified value : 6.8 to 7.2 mW
lop (at 7mW)
• Labeled on the optical pickup
Iop value ± 10mA
• Traverse waveform
Specified value : Below 10% offset
• Error rate check
Specified value : For points a, b, and c
C1 error : About 200
AD error : Above 00
• 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
• CPLAY error rate check
Specified value:
C1 error : Below 80
AD error : Below 2
• Unsatisfactory if displayed as T=@@ (##) [NG”
NG
(@@, ## are both arbitrary numbers)
Laser power check
(6-2 : See page 24)
Traverse check
(6-3 : See page 24)
Focus bias check
(6-4 : See page 25)
C PLAY check
(6-5 : See page 25)
Self-recording/playback
check
(6-6 : See page 25)
Temperature
compensation
offset check
(6-1 : See page 24)
Criteria for Determination
(Unsatisfactory if specified value is not satisfied)
• Clean the optical pick-up
• Adjust again
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
If always unsatisfactory:
• Replace the overwrite head
• Check for disconnection of the circuits around the
overwrite head
If occasionally unsatisfactory:
• Check if the overwrite head is distorted
• Check the mechanism around the sled
• Check for disconnection of the circuits around
D101 (BD board)
• Check the signals around IC101, IC121, CN102,
CN103 (BD board)
Measure if unsatisfactory:
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.

– 9 –
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.
Procedure:
1. Load a recordable disc whose contents can be erased into the unit.
2. Press the [MENU/NO] button. When “Edit Menu” is displayed on the fluorescent indicator tube, turn the [AMS] knob to
display “All Erase?”.
3. Press the [YES] button. (Or press the [AMS] knob)
4. When “All Erase??” is displayed on the fluorescent indicator tube, the music calendar number blinks.
5. Press the [YES]button to display “Complete!!”, and press the pbutton immediately. Wait for about 15 seconds while pressing the
button. (The [AMS] knob can be pressed instead of the [YES]button for the same results.)
6. When the “TOC” displayed on the fluorescent display tube goes off, release the pbutton.
7. Press the [REC] button to start recording. Then press the Pbutton and start recording.
8. To check the “track mode”, press the ·button to start play.
9. To release the test mode, press the 1/ubutton, and turn OFF the power. When “TOC” disappears, disconnect the power plug from the
outlet. []
r
[]
[]
[]
[]
±
≠
±
≠
±
≠
Fig. 1 Reading the Test Mode Display
(During recording and stop)
RTs@@c##e**
Fluorescent indicator tube display
@@ : Cause of retry
## : Number of retries
** : Number of retry errors
Fig. 2 Reading theTest Mode Display
(During playback)
@@ ###** $$
Fluorescent indicator tube display
@@ : Parts No. (name of area named on TOC)
## : Cluster
** : Sector
$$ : Track mode (Track information such as copy-
right information of each part)
Reading the Retry Cause Display
84218421
b7 b6 b5 b4 b3 b2 b1 b0
00000001
00000010
00000100
00001000
00010000
00100000
01000000
10000000
Hexa-
decimal Cause of Retry
01
02
04
08
10
20
40
80
Higher Bits Lower Bits
Hexadecimal
Bit
Binary shock
ader5
Discontinuous address
DIN unlock
FCS incorrect
IVR rec error
CLV unlock
Access fault
Occurring conditions
When track jump (shock) is detected
When ADER was counted more than five times
continuously
When ADIP address is not continuous
When DIN unlock is detected
When not in focus
When ABCD signal level exceeds the specified range
When CLV is unlocked
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 nb6
Lower bit : 2 = 0010 nb1
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
When A2 is displayed:
Higher bit: A = 1010 nb7+b5
Lower bit : 2 = 0010 nb1
The retry cause in this case is combined of “access fault”, “IVR rec error”, and “ader5”.


Address

– 10 –
Reading the Retry Cause Display
84218421
b7 b6 b5 b4 b3 b2 b1 b0
00000001
00000010
00000100
00001000
00010000
00100000
01000000
10000000
Hexa-
decimal Details
01
02
04
08
10
20
40
80
Higher Bits Lower Bits
Hexadecimal
Bit
Binary When 0
Emphasis OFF
Monaural
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
Audio (Normal)
Original
Copyright
Write prohibited
When 1
Emphasis ON
Stereo
Invalid
Digital copy
No copyright
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 nb7
Lower bit : 4 = 0100 nb2
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 nAll 0
Lower bit : 7 = 0111 nb0+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 ConversionTable
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

– 11 –
SECTION 2
GENERAL This section is extracted from
instruction manual.

– 12 –

– 13 –
CASE (4095269)
FRONT PANEL SECTION
Note: Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
1 four screws (CASE 3 TP2)
2 case (4095269)
1 three screws (CASE 3TP2
)
1 connector (CN791)
1 connector
(CN500)
2 wire (flat type) (19 core)
(CN421)
4 claw
4 claw
5 front panel section
3 five screws
(BVTP3
× 8)

– 14 –
MAIN BOARD
MECHANISM DECK SECTION (MDM-5D)
1 wire (flat type) (21 core)
(CN341)
2 connector
(CN502)
5 Remove the mechanism deck
(MDM-5D) to direction of
the arrow.
4 four screws (BVTTWH M3)
1 wire (flat type) (23 core
)
(CN501)
3 harness
1 wire (flat type) (21 core)
(CN341)
5 MAIN board
2 power cord connector
(CN901)
3 four screws
(PTTWH3
× 6)
1 wire (flat type) (23 core)
(CN501)
1 wire (flat type) (19 core)
(CN421)
4 five screws
(BVTP3
× 8)
2 two connectors
(CN502, 770)
3 two screws
(PTTWH3
× 6)

– 15 –
SLIDEDR (CAM)
BASE UNIT (MBU-5D), BD BOARD
1 two screws (P2.6 × 6)
4 bracket (Guide L)
3 leaf spring
2 harness
6 bracket (Guide R)
7 slider (Cam)
5 two screws (P2.6 × 6)
Set the shaft of Lever (O/C) to
be at the position in the figure.
Set the shaft of Cam gear to
be at the position in the figure.
• Note for Installation of Slider A (Cam)
1 three screws
(P2.6
× 6)
2 base unit (MBU-5D)
3 Remove the solder (Seven portion).
4 screw (M1.7 × 4)
6 flexible board
(CN101)
7 BD board
5 flexible board
(CN104)

– 16 –
SW BOARD, LOADING MOTOR (M103)
5 three screws (BTP2.6 × 6)
6 SW board
4 loading motor (M103)
3 two screws
(PWH1.7
× 4)
1 screw (PTPWH M2.6 × 6)
2 gear B

– 17 –
SECTION 4
TEST MODE
1. PRECAUTIONS FOR USE OFTEST 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.
Even if the [EJECT] button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will
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 (LDPWRADJUS)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUS)
• When pressing the [REC] button.
2. SETTINGTHETEST MODE
The following are two methods of entering the test mode.
Procedure 1: While pressing the [AMS] knob and pbutton, connect the power plug to an outlet, and release the [AMS]
knob and pbutton.
When the test mode is set, “[Check]” will be displayed. Turn the [AMS] knob switches between the following
four groups; ···Nn [Check] Nn [Adjust] Nn [Service] Nn [Develop] Nn ···.
Procedure 2: While pressing the [AMS] knob, connect the power plug to the outlet and release the [AMS] knob.
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. RELEASINGTHETEST MODE
Press the [REPEAT] button. The disc is ejected when loaded, and “Standby” display blinks, and becomes STANDBY state.
4. BASIC OPERATIONS OFTHETEST MODE
All operations are performed using the [AMS] knob, [YES] button, and [MENU/NO] button.
The functions of these buttons are as follows.
§
§
r
±
≠
±
≠
±
≠
±
≠
±
≠
±≠
[]
[]
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. SELECTINGTHETEST MODE
There are 31 types of test modes as shown below. The groups can be switched by turning the [AMS] knob. After selecting the
group to be used, press the [YES] button.After setting a certain group, turning the [AMS] knob switches between these modes.
Refer to “Group” in the table for details can be selected.
All items used for servicing can be treated using group S. So be carefully not to enter other groups by mistake.
±
≠
±
≠
Display
TEMP CHECK
LDPWR CHECK
EF MO CHECK
EF CD CHECK
FBIAS CHECK
Scurve CHECK
VERIFY MODE
DETRK CHECK
TEMP ADJUS
LDPWR ADJUS
EF MO ADJUS
EF CD ADJUS
FBIAS ADJUS
EEP MODE
MANUAL CMD
SVDATA READ
ERR DP MODE
SLED MOVE
ACCESS MODE
0920 CHECK
HEAD ADJUST
CPLAY2MODE
CREC 2MODE
ADJ CLEAR
AG Set (MO)
AG Set (CD)
Iop Read
Iop Write
530 ******
CPLAY MODE
CREC MODE
Contents
Temperature compensation offset check
Laser power check
Traverse (MO) check
Traverse (CD) check
Focus bias check
S letter check
Non-volatile memory check
Detrack check
Temperature compensation offset adjustment
Laser power adjustment
Traverse (MO) adjustment
Traverse (CD) adjustment
Focus bias adjustment
Non-volatile memory control
Command transmission
Status display
Error history display, clear
Sled check
Access check
Outermost circumference check
Head position check
Same functions as CPLAY MODE
Same functions as CREC MODE
Initialization of non-volatile memory of adjustment value
Auto gain output level adjustment (MO)
Auto gain output level adjustment (CD)
IOP data display
IOP data write
Microprocessing version display
Continuous playback mode
Continuous recording mode
No.
C01
C02
C03
C04
C05
C06
C07
C08
C09
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
Mark
(X)
(X)
(X)
(X) (!)
(X)
(X)
(X)
(X)
(X)
(X)
(X)
(X)
Group (*)
CS
CS
CS
CS
CS
C
C
C
AS
AS
AS
AS
AS
D
D
D
S
D
D
D
D
D
D
AS
AS
AS
CS
AS
CS
CASD
CASD
Group (*)
C: Check
S: Service 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 release 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 acciden-
tally, press the [MENU/NO] button to release 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.)
(2) Turn the [AMS] knob and display “CPLAY MODE” (C30).
(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.
When pressed another time, the parts to be played back can be moved.
(2) 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 and take out 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.
(2) Turn the [AMS] knob and display “CREC MODE”.
(3) Press the [YES] button to change the display to “CREC MID” (C31).
(4) When access completes, the display changes to “CREC ( ” and “ REC ” lights up.
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.
When pressed another time, the parts to be recorded can be changed. “ REC ” goes off.
(2) When access completes, the display changes to “CREC ( ” and “ REC ” lights up.
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.
(2) Press the [EJECT] button and take out the disc.
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 the unit entered this mode accidentally, press the [MENU/NO] button immediately to release it.
“CPLAY MID” n“CPLAY OUT” n“CPLAY IN”
±
≠
§
“CREC MID” n“CREC OUT” n“CREC IN”
§
±
≠

– 20 –
6. FUNCTIONS OF OTHER BUTTONS
7. TEST MODE DISPLAYS
Each time the [DISPLAY/CHAR] button is pressed, the display changes in the following order.
1. Mode display
Displays “TEMP ADJUS”, “CPLAYMODE”, etc.
2. Error rate display
Displays the error rate in the following way.
C = ππππ AD = ππ
C = Indicates the C1 error.
AD = Indicates ADER.
3. Address display
The address is displayed as follows. (MO: recordable disc, CD: playback only disc)
Press the [SCROLL] button to switches between the groove display and pit 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/ππ[ 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
Contents
Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo
turns ON/OFF.
Stops continuous playback and continuous recording.
The sled moves to the outer circumference only when this is pressed.
The sled moves to the inner circumference only when this is pressed.
Switches between the pit and groove modes when pressed.
Switches the spindle servo mode (CLV-S ˜CLV-A).
Switches the displayed contents each time the button is pressed
Ejects the disc
Releases the test mode
Function
·
p
)
0
SCROLL
PLAY MODE
DISPLAY/CHAR
EJECT §
REPEAT
Mode display
Error rate display
Address display
Auto gain display
(Not used in servicing)
Detrack check display
(Not used in servicing)
IVR display
(Not used in servicing)