MDS-SD1 - Sony Audio Service Manual (repair manual)

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MICROFILM

Model Name Using Similar Mechanism

MDS-JE520

MD Mechanism Type

MDM-5A

Base Unit Type

MBU-5A

Optical Pick-up Type

KMS-260A/J1N

AEP Model

UK Model

E Model

US and foreign patents licensed from Dolby Laboratories
Licensing Corporation.

MDS-SD1 is the minidisc deck that can
be used only with section CMT-SD1/SD3.

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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)”.

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  ENTER/YES  button and  

π  button, connect the power plug to the outlet, and release the  ENTER/YES  button and

π  button.

2. “TEMP CHECK” will be displayed. Press the  MENU/NO  button to display “Check”.
3. Rotate the  – 

˜ +  knob and when “[Service]” is displayed, press the  ENTER/YES  button.

4. Rotate the  – 

˜ +  knob and display “ERR DP MODE”.

5. Pressing the  ENTER/YES  button sets the error history mode and displays “total rec”.
6. Select the contents to be displayed or executed using the  – 

˜ +  knob.

7. Pressing the  CD SYNC/MD WM SYNC  button will display or execute the contents selected.
8. Pressing the  CD SYNC/MD WM SYNC  button another time returns to step 5.
9. Pressing the  MENU/NO  button displays “ERROR DP MODE” and exits the error history mode.
10.To exit the test mode, press the  

1/u  button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends.

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Display

total rec

total play

retry err

total err

err history

er refresh

tm refresh

Details of History

No error

Disc error. PTOC cannot be read

(DISC ejected)

Disc error. UTOC error

(DISC not ejected)

Loading error

Address cannot be read (Servo has deviated)

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.

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.

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.

Displays the total number of errors.
Displayed as “total ππ”.
The number of errors is displayed in hexadecimal digits from 00 to FF.

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  – 

˜ +  knob.

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  CD SYNC/MD WM SYNC  button and “er refresh?” is displayed, press the  ENTER/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.

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.
After pressing the  CD SYNC/MD WM SYNC  button and “tm refresh?” is displayed, press the  ENTER/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.

Error Code

E00

E01

E02

E03

E04

E05

E06

E07

E08

E09

E0A

FOK has deviated

Cannot focus (Servo has deviated)

Recording retry

Recording retry error

Playback retry error

(Access error)

Play retry error (C2 error)

Details of Error

Error Code

Details of Error

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Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

 damaged by heat.

• Keep the temperature of 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.

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 PROD-
UCT MARKING is located on
the rear exterior.

This caution
label is located
inside the unit.

Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the equipment manufacturer.
Discard used batteries according to manufacture’s instructions.

Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering.

Udskiftning må kun ske med batteri af samme fabrikat og type.

Levér det brugte batteri tilbage til leverandøren.

Eksplosjonsfare ved feilakting skifte av batteri.

Benytt samme batteritype eller en tilsvarende type anbefalt av

apparatfabrikanten.

Brukte batterier katterier kasseres i henhold til fabrikantens

Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ som rekommenderas
av apparattillverkaren.
Kassera använt batteri enligt gällande föreakrifter.

Parist voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.

!

!

PARTS No.

4-212-572-1

π

4-212-572-2

π

MODEL

AEP, UK model
SP, HK model

• Abbreviation

HK

: Hong Kong model

SP

: Singapore model

Parts No.