Sony MXD-D5C User manual

SERVICE MANUAL
CD player section
System Compact Disc digital audio system
Laser Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Laser output 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
Frequency response 5 to 20,000 Hz ±0 5 dB
Signal-to-noise ratio More than 96 dB
Wow and flutter Below measurable limit
MD deck section
System MiniDisc digital audio system
Disc MiniDisc
Laser Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Laser output 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
Laser diode properties Material: GaAlAs
Revolutions (CLV) 800 rpm to 1,800 rpm
Error correction Advanced Cross Interleave Reed
Solomon Code (ACIRC)
Sampling frequency 44 1 kHz
Coding Adaptive Transform Acoustic Coding
(ATRAC)/ATRAC 3
Frequency response 5 to 20,000 Hz ±0 5
dB
Signal-to-noise ratio Over 96 dB during playback
Wow and flutter Below measurable limit
Inputs
Jack type Input
impedance
Rated
input
Minimum
input
ANALOG IN
Phono
jacks
47 kilohms 500 mVrms 125 mVrms
DIGITAL
OPTICAL IN
Square
optical
connector
jack
Optical wave
length:
660 nm ——
Outputs
Jack type Rated output Load impedance
PHONES Stereo phone
jack
10 mW 32 ohms
ANALOG
OUT
Phono jacks 2 Vrms
(at 50 kilohms)
Over 10 kilohms
Modulation system EFM (Eight-to-Fourteen Modulation)
Number of channels 2 stereo channels
COMPACT DISC MINIDISC DECK
US Model
Canadian Model
AEP Model
UK Model
SPECIFICATIONS
MXD-D5C
– Continued on next page –
U.S. and foreign patents licensed form Dolby
Laboratories Licensing Corporation. Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM53G-21BD53
Base Unit Name BU-21BD53
Optical Pick-up Name OP Assy (A-MAX.2)
Model Name Using Similar Mechanism NEW
MD Mechanism Type MDM-7X2A
Optical Pick-up Name KMS-262A/J1N
CD
Section
MD
Section
Photo: AEP, UK models

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 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.
1. Press the x(CD), x(MD) and [YES] buttons at the same time.
2. Press the [ AMS ] (MD) knob and x(MD) button to display “ <0> To Normal”.
3. Turn the [ AMS ] (MD) knob and when “ <5> MD Test” is displayed, press the [ AMS ] (MD) knob.
4. Turn the [ AMS ] (MD) knob and when “[Service]” is displayed, press the [YES] button.
5. Turn the [ AMS ] (MD) knob to display “Err Display”.
6. Press the [YES] button to sets the error history mode and displays “op rec tm”.
7. Select the contents to be displayed or executed using the [ AMS ] (MD) knob.
8. Press the [ AMS ] (MD) knob to display or execute the contents selected.
9. Press the [ AMS ] (MD) knob another time returns to step 6.
10. Press the [MENU/NO] button to display “Err Display” and release the error history mode.
11. To release the test mode, press the I/1button to display “<5> MD Test”.
12. To turn the power OFF, turn the [ AMS ] (MD) knob and when “<8> Initial” displayed, press the [ AMS ] (MD)
knob.
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General
Power requirements
Where purchased Power requirements
U S A and Canada 120 V AC, 60 Hz
Europe 220 - 230 V AC, 50/60 Hz
Power consumption 25 W (less than 1 W at standby)
Dimensions (approx.) (w/h/d) incl. projecting parts and controls
430 × 120 × 395 mm
Mass (approx.) 6 5 kg
Supplied accessories
Design and specifications are subject to change without
notice
• Audio connecting cords (2)
• Remote commander (remote) (1)
• Sony R6 (size-AA) batteries (2)
Self-Diagnosis Function
The deck has a self-diagnosis display This function shows a three- or five-digit display (a combination of a letter and
figures) and the corresponding message, so you can check the deck’s condition
If such a display appears, check the following table in order to resolve the problem
Should any problem persist, consult your nearest Sony dealer
Three-digit display/Message Cause/Remedy
C11/Protected The inserted MD is record-protected
, Take out the MD, and close the record-protect tab
C13/Rec Error The recording was not made properly
, Set the deck in a stable place, and repeat the recording procedure
The inserted MD is dirty (with smudges, fingerprints, etc ), scratched, or not up to
standards
, Replace the disc, and repeat the recording procedure
C14/Toc Error The deck could not read the TOC of the MD properly
, Insert another disc
, If possible, erase all tracks on the MD using the All Erase Function
While recording from a digital component connected through the DIGITAL
OPTICAL IN connector, the digital connecting cable was unplugged or the digital
component turned off
, Connect the cable or turn the digital component back on
C12/Cannot Copy An attempt was made to play a disc that is not compatible with this deck (CD-
ROM, MD data disc, etc )
, Replace the disc
C13/Read Error The deck could not read the TOC of the MD properly
, Eject the disc, then insert it again
C41/Cannot Copy The digitally dubbed material cannot be recorded digitally
C71/Din Unlock A moment’s lighting is due to the signals of the digital program being recorded
This does not affect the recorded material
E0001/MEMORY NG There is an error in the internal data that the deck needs in order to operate
, Consult your nearest Sony dealer
E0101/LASER NG There ia a problem with the optical pick-up
,The optical pick-up may have failed Consult your nearest Sony dealer
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3
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Selecting theTest Mode
Display Details of History
op rec tm Cumulative recording time is displayed.
When cumulative recording time is over 1 minute, the hour and minute are displayed as they are.
When it is under 1 minute, “Under 1 min” is displayed.
The displayed time shows how long the laser is in high power state.
It is about one fourth the actual recording time.
op play tm Cumulative playing time is displayed.
When cumulative playing time is over 1 minute, the hour and minute are displayed as they are.
When it is under 1 minute, “Under 1 min” is displayed.
spdl rp tm Cumulative spindle motor running time is displayed.
When cumulative spindle motor run time is over 1 minute, the hour and minute are displayed as they are.
When it is under 1 minute, “Under 1 min” is displayed.
retry err Displays the total number of retries during recording and number of retry errors during play.
Displayed as “rss pss”.
“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 ss”.
The number of errors is displayed in hexadecimal digits from 00 to FF.
err history Displays the 10 latest errors.
Displayed as “0sErrCd@@”.
sindicates 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 ]
(MD) knob.
retry adrs Display the past five retry addresses.
Displays “ss ADRS ssss”, ss is the history number. ssss is the cluster with the retry error.
Select the error history number using the [ AMS ] knob.
er refresh Mode to clear the error history and retry address history.
[Operating method]
1) Press [ AMS ] (MD) knob when “er refresh” is displayed.
2) The display will change to “er refresh?”, and then press [YES] button.
The operation is over if “Complete!” is displayed.
After this mode was executed, check the following:
• The data have been cleared.
• Perform the recording and playing to check that the mechanism operates normally.
op change Mode to clear cumulative time of “op rec tm” and “op play tm”.
These historical data are used to determine the timing when the optical pick-up is to be replaced. When the
optical pick-up was replaced, perform this operation to clear historical data.
[Operating method]
1) Press [ AMS ] (MD) knob when “op change” is displayed.
2) The display will change to “op change?”, and then press [YES] button.
The operation is over if “Complete!” is displayed.
spdl change Mode to clear cumulative time of “spdl rp tm”.
This historical data is used to determine the timing when the spindle motor is to be replaced. When the spindle
motor was replaced, perform this operation to clear historical data.
[Operating method]
1) Press [ AMS ] (MD) knob when “spdl change” is displayed.
2) The display will change to “spdl change?”, and then press [YES] button.
The operation is over if “Complete!” is displayed.
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4
TABLE OF CONTENTS
SELF-DIAGNOSIS FUNCTION..................................... 2
1. SERVICING NOTES ............................................... 6
2. GENERAL ................................................................... 16
3. DISASSEMBLY ......................................................... 17
4. ASSEMBLY .......................................................... 26
5. TEST MODE.............................................................. 29
6. ELECTRICAL ADJUSTMENTS
MD Section ..................................................................... 35
CD Section ...................................................................... 46
7. DIAGRAMS
7-1. Block Diagram – MD SERVO Section – ....................... 48
7-2. Block Diagram – MAIN Section – ................................. 49
7-3. Block Diagram
– DISPLAY/POWER SUPPLY Section – ..................... 50
7-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 51
7-5. Printed Wiring Board – BD (CD) Board – ..................... 52
7-6. Schematic Diagram – BD (CD) Board – ........................ 53
7-7. Schematic Diagram – BD (MD) Board (1/2) – .............. 54
7-8. Schematic Diagram – BD (MD) Board (2/2) – .............. 55
7-9. Printed Wiring Board – BD (MD) Board – .................... 56
7-10. Printed Wiring Board
– MAIN Board (Component Side) – .............................. 58
7-11. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 59
7-12. Schematic Diagram – MAIN Board (1/4) – ................... 60
7-13. Schematic Diagram – MAIN Board (2/4) – ................... 61
7-14. Schematic Diagram – MAIN Board (3/4) – ................... 62
7-15. Schematic Diagram – MAIN Board (4/4) – ................... 63
7-16. Printed Wiring Board
– AUDIO Board (Component Side) – ............................ 64
7-17. Printed Wiring Board
– AUDIO Board (Conductor Side) – .............................. 65
7-18. Schematic Diagram – AUDIO Board – .......................... 66
7-19. Printed Wiring Boards – CDM Section – ...................... 68
7-20. Schematic Diagram – CDM Section – .......................... 69
7-21. Printed Wiring Boards – PANEL Section – .................. 70
7-22. Schematic Diagram – PANEL Section – ....................... 71
7-23. Printed Wiring Board – LED Board – ........................... 72
7-24. Schematic Diagram – LED Board – .............................. 73
7-25. IC Pin Function Description ........................................... 77
8. EXPLODED VIEWS................................................ 89
9. ELECTRICAL PARTS LIST ............................... 96
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED
LINE WITH MARK 0ON 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.
Error Code Details of Error
10 Loading failed
12 Loading switch combination is illegal
20 Head of PTOC could not be read within the
specified time
21 Head of PTOC could be read but its content is
erroneous
22 Access to UTOC could not be made within the
specified time
23 UTOC could be not read within the specified
3time
24 Content of UTOC is erroneous
30 Playing could not start
31 Content of sector is erroneous
40 Cause of retry occurred during normal recording
41 D-RAM overflowed and retry was executed
42 Retry was executed during the writing to TOC
43 S.F editing was interrupted by retry
50 Address could not be read except in access
processing
51 Focusing failed and it is out of control
60 Unlock retry
Table of Error Codes

5
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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
TheAC 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 microamperes.).
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” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples 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)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µ FAC
voltmete
r
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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.
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.
The 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
The following caution label is located
inside of the unit

6
SECTION 1
SERVICING NOTES
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.
For CD
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check”in “CD section adjustment”and
check that the S curve waveforms is output three times.
For MD
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
Model Part No.
US model 4-228-754-1s
Canadian model 4-228-754-2s
AEP, UK models 4-228-754-3s
MODEL IDENTIFICATION
—BACK PANEL —
Part No.
(Figure A)
CLEANING OBJECTIVE LENS OF OPTICAL PICK-UP
•In cleaning the objective lens of optical pick-up, be sure the
following below.
1. In cleaning the lens, do not apply an excessive force.
As the optical pick-up is vulnerable, application of excessive
force could damage the lens holder.
2. In cleaning, do not use a cleaner other than exclusive cleaning
liquid (KK-91 or isopropyl alcohol).
3. Wipe the objective lens spirally from center toward outside.
(See Figure A)
4. Eject the disk, if loaded.
5. Disconnect the power cord from the socket to shut off the power
supply.
6. When cleaning the objective lens of optical pick-up in CD,
refer to “FITTING BASE (GUIDE) ASS’Y, BRACKET
(CHASSIS)AND MAGNETASS’Y”on page 24 for removing
MAGNET ASS’Y.

7
I+3V
IOP
GND
TE
FE
VC
RF
I+3V
IOP
GND
TE
FE
VC
RF
1
7
for
MDM-7X2A
I+3V
CN105
IOP
TE
VC
GND
FE
RF
MD SECTION
JIG FOR CHECKING BD (MD) BOARD WAVEFORM
The special jig (J-2501-196-A) is useful for checking the waveform of the BD (MD) 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 : Tracking error signal (Traverse adjustment)
VC : Reference level for checking the signal
RF : RF signal (Check jitter)
FE : Focus error signal

8
IOP DATA RECORDING AND DISPLAYWHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF
BD (MD) 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 (IC195 of BD (MD) board),
record the IOP value on the optical pick-up according to the following procedure.
Record Procedure:
1. Press the x(CD), x(MD) and [YES] buttons at the same time.
2. Press the [ AMS ] (MD) knob and x(MD) button to display “<0> To Normal”.
3. Turn the [ AMS ] (MD) knob and when “<5> MD Test”is displayed, press the [ AMS ] (MD) knob.
4. Turn the [ AMS ] (MD) knob to display “[Service]”, and press the [YES] button.
5. Turn the [ AMS ] (MD) knob to display “Iop Write”(C05), and press the [YES] button.
6. The display becomes “Ref=@@@.@”(@ is an arbitrary number) and the numbers which can be changed will blink.
7. Input the IOP value written on the optical pick-up label.
To select the number: Turn the [ AMS ] (MD) knob.
To select the digit : Press the [ AMS ] (MD) knob.
8. When the [YES] button is pressed, the display becomes “Measu=@@@.@”(@ is an arbitrary number).
9. As the adjustment results are recorded for the 6 value. Leave it as it is and press the [YES] button.
10. “Complete!”will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop
Write (C05)”.
11. Press the I/1button to display “<5> MD Test”.
12. To turn the power OFF, turn the [ AMS ] (MD) knob and “<8> Initial”displayed, press the [ AMS ] (MD) knob.
Display Procedure:
1. Press the x(CD), x(MD) and [YES] buttons at the same time.
2. Press the [ AMS ] (MD) knob and x(MD) button to display “<0> To Normal”.
3. Turn the [ AMS ] (MD) knob and when “<5> MD Test”is displayed, press the [ AMS ] (MD) knob.
4. Turn the [ AMS ] (MD) knob to display “[Service]”, and press the [YES] button.
5. Turn the [ AMS ] (MD) knob to display “Iop Read”(C26).
6. “@@.@/##.#”is displayed and the recorded contents are displayed.
@@.@: indicates the IOP value on the optical pick-up label.
##.# : indicates the IOP value after adjustment
7. To end, press the [ AMS ] (MD) knob or [MENU/NO] button to display “Iop Read”(C26).
8. Press the I/1button to display “<5> MD Test”.
9. To turn the power OFF, turn the [ AMS ] (MD) knob and “<8> Initial”displayed, press the [ AMS ] (MD) knob.
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9
CHECKS PRIORTO PARTS REPLACEMENT AND ADJUSTMENTS IN MD
Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in “6 Electrical Adjustments”.
•0.9 mW power
Specified value : 0.80 to 0.96 mW
•8.4 mW power
Specified value : 8.2 to 8.6 mW
•Iop (at 8.4mW)
Labeled on the optical pick-up
Iop value ± 10mA
•Traverse waveform
Specified value : Below 10% offset
•Error rate check
Specified value : For points a and b
C1 error : About 200
AD error : below 2
For point C
C1 error: 50
AD error: below 2
•Error rate check
Specified value:
a. When using test disc (MDW-74/GA-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 38)
Traverse check
(6-6 : See page 39)
Focus bias check
(6-7 : See page 40)
C PLAY check
(6-8 : See page 40)
Self-recording/playback
check
(6-9 : See page 40)
Temperature
compensation
offset check
(6-1 : See page 38)
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 (MD) board)
•Check the signals around IC101, IC151, CN102,
CN103 (BD (MD) 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.

10
SERVICE MODE
This set provides various modes for the service.
Enter the service mode through the procedure given below, and select the desired mode.
Procedure:
1. Press the x(CD), x(MD) and [YES] buttons at the same time.
2. Press the [ AMS ] (MD) knob and x(MD) button to display “<0> To Normal”.
3. At this time, turn the [ AMS ] (MD) knob can select all modes. For the contents of mode, see the following table.
4. To exit from the service mode, turn [ AMS ] (MD) to display “<0> To Normal”, then press the [ AMS ] (MD) knob.
Contents of test mode
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No. Display Function
0 <0> To Normal Exit from test mode
1 <1> Version Microcomputer Version display
2 <2> FLD FL display test/LED display test
3 <3> Key, Jog Key/Jog input test
4 <4> CD Test CD all sorts test
5 0> COMMAND Command transfer menu
6 1> ERROR C1, C2 error display
7 2> SPEED X1 Disc speed selection
8 3> ISRC ISRC display
9 4> CHECK8 Check 8 cm display
10 5> AUTO G Auto gain display
11 6> HENSHIN Decentiering display
12 7> PORT Port selection
13 8> AMS ON AMS display
14 9> TRK ON TRK ON/OFF display
15 <5> MD Test MD all sorts test
16 <6> Retry & TOC MD TOC off & Retry test
17 <7> PC LINK PC connection check
18 <8> Initial All reset
19 <9> MD Update Software update
20 <10> Sircs Sircs code display
21 <11> Dump Microcomputer Dump mode
22 <12> CD Aging CD Aging
23 <13> Rep 5 off Cancel restriction of repeat five times
24 <14> KeyBoard Keyboard check
25 <15> Special Command, Sircs test
26 <16> CD Ship Shipment mode
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Microcomputer Version Display
Procedure:
1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<1> Version”, and press the [ AMS ] (MD).
2. The CD microcomputer version is displayed, and then press the [ AMS ] (MD) knob, and the MD microcomputer version
and the display microcomputer version will be displayed.
3. To exit from the mode, press the [ AMS ] (MD) knob.
FL DisplayTest/LED display test
Procedure:
1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<2> FLD”, and press the [ AMS ] (MD).
2. All segments of fluorescent display tube turn on, and all LEDs turn off. Successive pressing the [ AMS ] (MD) knob causes
the fluorescent display tube to be grid display. The [DISC] button LED becomes green, and all others turn on.
3. Successive pressing the [ AMS ] (MD) knob causes the fluorescent display tube to be another grid display. The [DISC] button
LED becomes amber, and all others turn on.
4. To exit from the mode, press the [ AMS ] (MD) knob.
Key/Jog InputTest
Procedure:
1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<3> Key, Jog”, and press the [ AMS ] (MD).
2. Turning the [ AMS ] (MD) knob moves the R-CH level meter, and turning the [ AMS ] (CD) knob moves the L-CH level
meter.
3. Press the buttons in order, and when all buttons were pressed, “Key OK!”will be displayed.
4. To exit from the mode, press the [ AMS ] (MD) knob.
Software Reset
Procedure:
1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<8> Initial”, and press the [ AMS ] (MD).
2. The microcomputer resets the software, and the power is turned off.
Shipping initial mode (CD ship setting)
At the shipment, finally perform the following operation.
Procedure:
1. Enter the Service mode, then turn [ AMS ] (MD) knob to display “<16> CD Ship”, and press the [ AMS ] (MD).
2. “DISC 1”is chucked by the microcomputer control, and the power is turned off with the BD shutter left open.
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lL lL
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12
RETRY CAUSE DISPLAY MODE IN MD
•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 ] (MD) knob
to display “All Erase?”.
3. Press the [YES] button. (Or press the [ AMS ] (MD) knob)
4. “All Erase?”is displayed on the fluorescent indicator tube.
5. Press the [YES] button to display “Complete!”. (The [ AMS ] (MD) knob can be pressed instead of the [YES] button for the
same results)
6. Press x (CD) button, x (MD) button, and [YES] button simultaneously.
7. Press the [ AMS ] (MD) knob and x(MD) button to display “<0> To Normal”.
8. Turn [ AMS ] (MD) knob to display “<6> Retry & TOC”, and press the [ AMS ] (MD) knob.
9. Press the [REC ] button to start recording. Then press the X(MD) button and start recording.
10. To check the “track mode”, press the H(MD) button to start play.
11. To release the test mode, press the I/1button, and turn OFF the power. When “TOC”disappears, disconnect the power plug from the
outlet.
Fig. 1 Reading theTest 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 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 tb6
Lower bit : 2 = 0010 tb1
In this case, the retry cause is combined of “CLV unlock”and “ader5”.
When A2 is displayed:
Higher bit: A = 1010 tb7 + b5
Lower bit : 2 = 0010 tb1
The retry cause in this case is combined of “Access fault”, “IVR rec error”, and “ader5”.


Address
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z
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lLlL
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
WhenABCD signal level exceeds the specified range
When CLV is unlocked
When access operation is not performed normally

13
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 tb7
Lower bit : 4 = 0100 tb2
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”, and “Write allowed”.
Example When 07 is displayed:
Higher bit: 0 = 0000 tAll 0
Lower bit : 7 = 0111 tb0 + 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”, and “Write prohibited”.
Hexadecimal t 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

14
CD SECTION
•In checking the CD block and MAIN board, prepare jig.
•In checking the CD block, prepare jig (extension cable J-2501-075-A) to connect the BD (CD) board (CN101) and MAIN board
(CN302).
•In checking the MAIN board, prepare jig (extension cable J-2501-094-A) to connect the MAIN board (CN802) and DISPLAY board
(CN951).
CD-TEXTTEST DISC
This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display.
To check, perform the following procedure.
Checking Method:
1. Turn ON the power, set the disc to the disc table with the “test disc”label facing up, and chuck the disc.
2. Press the H(CD) button and play back the disc.
3. The following will be displayed on the fluorescent indicator tube.
Display : 1KHZ 0DB
4. Rotating [ AMS ] (CD) knob, select the track. The text data of each track will be displayed.
For details of the displayed contents for each track, refer to “Table 1 : CD-TEXT TEST DISC TEXT Data Contents”and “Table 2 : CD-
TEXT TEST DISC Recorded Contents and Display”.
Restrictions in CD-TEXT Display
In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For
details, refer to “Table 2 : CD-TEXT DISC Recorded Contents and Display”.
Table 1 : CD-TEXTTEST DISC TEXT Data Contents (TRACKS No. 1 to 41:Normal Characters)
1 1kHz/0dB/L&R 22 1kHz/–90dB/L&R
2 20Hz/0dB/L&R 23 Infinity Zero w/o emphasis//L&R
3 40Hz/0dB/L&R 24 Infinity Zero with emphasis//L&R
4 100Hz/0dB/L&R 25 400Hz+7kHz(4:1)/0dB/L&R
5 200Hz/0dB/L&R 26 400Hz+7kHz(4:1)/–10dB/L&R
6 500Hz/0dB/L&R 27 19kHz+20kHz(1:1)/0dB/L&R
7 1kHz/0dB/L&R 28 19kHz+20kHz(1:1)/–10dB/L&R
8 5kHz/0dB/L&R 29 100Hz/0dB/L*
9 7kHz/0dB/L&R 30 1kHz/0dB/L*
10 10kHz/0dB/L&R 31 10kHz/0dB/L*
11 16kHz/0dB/L&R 32 20kHz/0dB/L*
12 18kHz/0dB/L&R 33 100Hz/0dB/R*
13 20kHz/0dB/L&R 34 1kHz/0dB/R*
14 1kHz/0dB/L&R 35 10kHz/0dB/R*
15 1kHz/–1dB/L&R 36 20kHz/0dB/R*
16 1kHz/–3dB/L&R 37 100Hz Squer Wave//L&R
17 1kHz/–6dB/L&R 38 1kHz Squer Wave//L&R
18 1kHz/–10dB/L&R 39 1kHz w/emphasis/–0.37dB/L&R
19 1kHz/–20dB/L&R 40 5kHz w/emphasis/–4.53dB/L&R
20 1kHz/–60dB/L&R 41 16kHz w/emphasis/–9.04dB/L&R
21 1kHz/–80dB/L&R
TRACK
No. Displayed Contents
Note: The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.
TRACK
No. Displayed Contents
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15
Table 2: CD-TEXTTEST DISC Recorded Contents and Display
(In this unit, some special characters cannot be displayed. This is not a fault)
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same
TAll the same (A0h to A7h) 8859-1
(A8h to AFh)
(B0h to B7h)
(B8h to BFh)
AAAAAA C (C0h to C7h)
EEEEIIII (C8h to CFh)
D N OOOOO (D0h to D7h)
O U U UU Y (D8h to DFh)
aaaaaa c (E0h to E7h)
eeeeiiii (E8h to EFh)
dnooooo (F0h to F7h)
ouuuuy y (F8h to FFh)
TAll the same
TAll the same
to
TAll the same
TRACK
No. Recorded contents
´
′
*
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
to
99
!”#$%&´(21h to 27h)1kHz 0dB L&R
( ) +,–. / (28h to 2Fh)
01234567 (30h to 37h)
8 9 : ; < = > ? (38h to 3Fh)
@A B CD E F G (40h to 47h)
H I J K L MN O (48h to 4Fh)
P Q R S T U VW (50h to 57h)
XYZ [ ¥] ^ _ (58h to 5Fh)
a b c d e f g (60h to 67h)
h i j k l m n o (68h to 6Fh)
p q r s t u v w (70h to 77h)
xyz{ I} (78h to 7Fh)
i¢£¤¥ §(A0h to A7h) 8859-1
Cª¬PR–(A8h to AFh)
•±23 µ¶• (B0h to B7h)
†1º ¿ (B8h to BFh)
ÀÁÂÃÄÅÆÇ (C0h to C7h)
ÈÉÊËÌÍÎÏ (C8h to CFh)
DÑÒÓÔÕÖ (D0h to D7h)
ØÙÚÛÜYß(D8h to DFh)
àáâãäåæç (E0h to E7h)
èéêëìíîï (E8h to FFh)
∂ñòóôõö÷(F0h to F7h)
øùúûüyÿ(F8h to FFh)
No.66
No.67
to
No.99
˙
~
′
1
41 23 4
Display

16
SECTION 2
GENERAL
LOCATION OF CONTROLS
•Front View
•Rear View
1Remote sensor
2I/1 (power) switch
STANDBY indicator
3DISC 1–5 button
DISK 1–5 A(CD tray open/close) button
4CD tray
5CD SYNCHRO NORMAL button
CD SYNCHRO HIGH button
6MD insertion slot
7AEJECT button
8MD LP indicator
9REC MODE button
0PHONE LEVEL control
PHONE jack
qa CD operation button
H(play) button
X(pause) button
x(stop) button
m/M(forward/backward) button
AMS control
CLEAR button
PLAY MODE button
TIME button
qs REC-IT button
qd DISPLAY button
qf Display window
qg MD operation button
MENU/NO button
CLEAR button
AMS control
YES button
H(play) button
X(pause) button
x(stop) button
m/M(forward/backward) button
REC z(recording) button
PLAY MODE button
TIME/CHAR button
qh INPUT button
qj SLEEP button
1AC power cord
2ANALOG IN jack
3ANALOG OUT jack
4DIGITAL OPTICAL IN jack
5KEYBOARD jack

17
SECTION 3
DISASSEMBLY
•This set can be disassembled in the order shown below.
CASE
(Page 18)
FRONT PANEL ASS’Y
(Page 18)
HP BOARD, SW BOARD,
LED BOARD, DISPLAY BOARD
(Page 19)
CD MECHANISM DECK SECTION (CDM53G-21BD53),
MD MECHANISM DECK SECTION (MDM-7X2A)
(Page 19)
AUDIO BOARD
(Page 20) BD (MD) BOARD (Page 21) CD BASE UNIT (BU-21BD53) (Page 23)
MAIN BOARD,
POWER TRANSFORMER
(TR701)
(Page 20)
HOLDER ASS’Y
(Page 21) FITTING BASE (GUIDE) ASS’Y,
BRACKET (CHASSIS)
AND MAGNET ASS’Y
(Page 24)
GUIDE (L), SLIDER (EJ),
SLIDER, LEVER (HEAD)
(Page 22) TRAY (SUB)
(Page 24)
OPTICAL PICK-UP (KMS-262A/J1N),
OVER LIGHT HEAD (HR901)
(Page 22) CHASSIS (MOLD B) SECTION,
STOCKER SECTION
AND SLIDER (SELECTION)
(Page 25)
SPINDLE MOTOR ASS’Y (M101),
SLED MOTOR ASS’Y (M102),
LOADING MOTOR ASS’Y (M103)
(Page 23)

18
5 claw
2 wire (flat type) (19 core)
(CN802)
1 connector
(CN300)
2 wire (flat type) (9 core)
(CN803)
5 claw
4 four screws
(BVTT3
× 6)
3 seven screws
(BVTT3
× 6)
6 front panel ass’y
CASE
FRONT PANEL ASS’Y
Note: Follow the disassembly procedure in the numerical order given.
1 two screws
1 two screw
s
1 two screw
s
2 case

19
3 two screws
(BVTT3
× 6)
1 connector
(CN713)
3 two screws
(BVTT3
× 6)
2 wire (flat type) (21 core)
(CN101)
4 CD mechanism deck section
(CDM53G-21BD53)
7 MD mechanism deck section
(MDM-7X2A)
6 four screws
(BVTTWH M3)
5 wire (flat type) (27 core)
(CN304)
5 wire (flat type) (17 core)
(CN303)
2 wire (flat type) (17 core)
(CN701)
HP BOARD, SW BOARD, LED BOARD, DISPLAY BOARD
CD MECHANISM DECK SECTION (CDM53G-21BD53), MD MECHANISM DECK SECTION (MDM-7X2A)
2 screw
(BVTP2.6
× 8)
3 two nuts
4 HP board
2 two screws
(BVTP2.6
× 8)
5 nine screws
(BVTP2.6
× 8)
7 four screws
(BVTP2.6
× 8)
6 LED board
9 ten screws
(BVTP2.6
× 8)
9 four screws
(BVTP2.6
× 8
)
0 DISPLAY board
1 two knob (AMS) ass’ys
1 knob (phone) level
8 SW board

20
AUDIO BOARD
MAIN BOARD, POWER TRANSFORMER (TR701)
3 AUDIO board
1 wire (flat type) (19 core)
(CN305)
2 three screw
s
(BV3 × 8)
power transformer
MAIN board
–bottom view –
4 Remove solders.
2 screw
(BVTT3
× 6)
6 two PC board holders
2 screw
(BVTT3
× 6)
1 four screws
(PTTWH3
× 6)
power transformer
(TR701)
2 five screws
(BVTT3
× 6
)
5 MAIN board
3