SCD-X501ES - Sony Audio Service Manual (repair manual). Page 12

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CHECK  DISC  LIST
Use the following hybrid disc on this check.
HLXA-509 (Part No. J-6090-090-A) or Super Audio CD HYBRID
DISC (Market disc).

1. Connect the oscilloscope to pin wj of CN702 on the MAIN

board.

2. Insert the test disc HLXA-509 (Part No. J-6090-090-A) or

Super Audio CD HYBRID DISC (Market disc).

3. Confirm the waveform at that time because the disc is

distinguished at chucking moment.

4. Confirm 

∆t of the shape of waves is a specified value.

Specified Value: 7.5 ms to 9.7 ms

(software version of the system 1.24 or later)
6.9 ms to 9.7 ms
(software version of the system less than 1.24)

5. When step 4 is NG, R892 and R893 on the MAIN board are

changed and the waveform is measured again.
In case of the specified value or more: Change R892 and R893
to 110 k

Ω (part No. 1-218-896-11).

In case of the specified value or less: Change R892 and R893
to 130 k

Ω (part No. 1-218-898-11).

6. Eject the disc and press the [POWER] button to turn the power

off.

Adjust it as follows after the optical traverse unit (DBU-3), WALTZ-
RF board, MAIN board, master controller (IC705), SA-CD/CD
decoder (IC706) and EEPROM (IC702) are replaced.

1. ROM VERSION CHECK

2. U-CON CHECK

3. OPTICAL SENSITIVITY CHECK

4. MODE SETTING FOR SHIPPING (perform this mode only

when EEPROM (IC702) is replaced)

Software version of the system is confirmed.
Procedure:

1. While pressing the [MENU] button and  

. AMS >

  jog press

the [POWER] button to turn the power on and enter the test
mode and display “DIAG MODE”.

2.

. AMS >

  jog is turned and “81” is selected.

3.

. AMS >

  jog is pressed and software version of the system

is displayed.

4. “SYS VER 

*.**” is displayed.

5.

. AMS >

  jog is turned and “82” is selected.

6.

. AMS >

  jog is pressed and I/F version is displayed.

7. “I/F VER 

*.**” is displayed.

When the software version of the system 1.24 or later, this checking
must be performed before “3. OPTICAL SENSITIVITY CHECK”
and “4. MODE SETTING FOR SHIPPING”.
Procedure:

1. While pressing the [MENU] button and  

. AMS >

  jog press

the [POWER] button to turn the power on and enter the test
mode and display “DIAG MODE”.

2. Insert the test disc (SATD-S5). (Part No. : J-2501-215-A)
3.

. AMS >

  jog is turned and “B0” is selected.

4.

. AMS >

  jog is pressed and confirm “FFFF” is displayed.

5.

. AMS >

  jog is turned and “B1” is selected. “

6.

. AMS >

  jog is pressed and confirm “

−9” is displayed.

Then the value is changed and the value of four digits is
displayed after “

−0”.

7.

. AMS >

  jog is turned and “B2” is selected.

8.

.  AMS  >

    jog is pressed and confirm the value of four

digits is displayed.At this time, confirm the value displayed at
the end is a specified value.

Specified Value: 08D0 to 04D0

9. Eject the test disc and press the [POWER] button to turn the

power off.

software version of the
system 1.24 or later





software version of the
system less than 1.24





+
–

MAIN board

CN702 pin 

wj

oscilloscope

Waveform

∆t







