ZS-M30 - Sony Audio Service Manual (repair manual). Page 22

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7. Turn the JOG dial to display “LDPWR CHECK”.
8. Press the  YES/ENTER  button once to display “LD 0.9mW

$ 

 ”. Check that the reading of the laser power meter become

0.85 to 0.91 mW.

9. Press the  YES/ENTER  button once more to display “LD 7.0

mW $ 

 ”. Check that the reading the laser power meter and

digital voltmeter satisfy the specified value.
Note down the digital voltmeter reading value.

6-4. Self-Recording/playback Check
Prepare a continuous recording disc using the unit to be repaired
and check the error rate.

Checking Procedure:
1. Load a recordable disc (blank disc).
2. Turn the JOG dial to display “CREC MODE”.
3. Press the  YES/ENTER  button to display “CREC MID”.
4. When recording starts, lights up “  REC  ” and display “CREC

(@@@@)” (@@@@ is the address).

5. About 1 minute later, press the  NO/CANCEL  button to

stop continuous recording.

6. Turn the JOG dial to display “CPLAY MODE”.
7. Press the  YES/ENTER  button to display “CPLAY MID”.
8. “C1 = 

 AD = 

 ” will be displayed.

9. Check that the C1 error becomes below 80 and the ADER be-

low 2.

10.Press the  NO/CANCEL  button to stop play back, then press

the  Z  (MD) button and take out the disc.

Note: After the TEST MODE is entered, insert the disc.

Save the temperature data at that time in the non-volatile memory
as 25 

°

C reference data.

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 tem
perature of 22 

°

C to 28 

°

C.

3. When D501 has been replaced, perform this adjustment after

the tem-perature of this part has become the ambient tempera
ture.

Adjusting Procedure:
1. Turn the JOG dial to display “TEMP ADJUST”.
2. Press the  YES/ENTER  button to select the “TEMP ADJUST”

mode.

3. “TEMP = 

 ” and the current temperature data will be displayed.

4. To save the data, press the  YES/ENTER  button.

When not saving the data, press the NO/CANCEL button.

5. When the  YES/ENTER  button is pressed, “TEMP = SAVE”

will be displayed and turned back to “TEMP ADJUST” display
then. When the  NO/CANCEL  button is pressed, “TEMP
ADJUST” will be displayed immediately.

Specified Value:
The “TEMP = 

 ” should be within “E0 - EF”, “F0 - FF”, “00 -

0F”,“10 - 1F” and “20 - 2F”.

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  m  but-ton
or  M button to move the optical pick-up)
Connect the digital voltmeter to TP502  (I+3  V) and TP503
(IOP) on the MD board.

2. Turn the JOG dial to display “LDPWR ADJUST”.

(Laser power: For adjustment)

3. Press the  YES/ENTER  button once to display “LD 0.9 mW

$ 

 ”.

4. Turn the JOG dial so that the reading of the laser power meter

becomes 0.85 to 0.91 mW. Press the  YES/ENTER  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.

6. Turn the JOG dial and adjust so that the reading on the laser

power meter is 6.9 to 7.1 mW. Press the  YES/ENTER  button to
save the setting.

Note: Do not perform the emission with 7.0 mW more than 15 sec

onds continuously.

laser
power meter

Optical pick-up
objective lens

 

 

 

 

R622

C508

C521

C512

L503

C502

R511

C518

C511

C505

R505

R510

Q503

R508

R513

R509

R517

C519

C517

C520 C522

R519

R516

R512

C506

R504

R503

Q506

Q507

Q505

Q504

R518

Q502

R515

IC502

R5

2

L501

L506

C611

R633

Q501

R514

R502

C607

 

 

 

 

 

TP503

(IOP)

TP502
(I+3V)

(TE)

1

36

25

24

13

15

20

37

48

45

40

30

35

5

1012

TP502 (I+3V)

TP503 (IOP)

MD BOARD (SIDE B)

digital voltmeter