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ZS-M30
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.
7. TEMPERATURE COMPENSATION OFFSET
ADJUSTMENT
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".
22
8. LASER POWER ADJUSTMENT
Connection:
Optical pick-up
objective lens
MD BOARD (SIDE B)
C520 C522
36
R518
37
40
C519
R622
45
48
Q502
C508
C506
C611
R633
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 $
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.
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.
laser
power meter
digital voltmeter
TP502 (I+3V)
TP503 (IOP)
(TE)
35
30
25
R519
24
C521
20
15
R515
13
5
1012
1
R512
R513
C512
R503
R514
C511
TP502
R511
(I+3V)
TP503
(IOP)
L506
" will be displayed for a
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