67
PDR-W839
[Procedure]
1. Enter the Test mode.
2. Press the INPUT key so that "ANALOG" appears on the FL display.
3. Press the ERASE key so that "CD" appears on the FL display.
4. Move the pickup to the position where the power is easy to measure by pressing the SCAN key.
(
41 ¡¢
)
5. Press the REC/REC MUTE and NAME key in order, and light the LD.
6. Turn the JOG key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the REC/REC MUTE key, and adjust it.
(initial state is the coarse adjustment.)
7. Press the ENTER key to register the adjustment if the power became the adjustment value.
8. Press the STOP key to goes out the LD, and adjustment is completed.
6.7 LD POWER ADJUSTMENT
6.7.1 Playback Power Adjustment
[Procedure]
1. Enter the Test mode.
2. Press the INPUT key so that "ANALOG" appears on the FL display.
3. Press the ERASE key so that "CD-R" appears on the FL display.
4. Move the pickup to the position where the power is easy to measure by pressing the SCAN key.
(
41 ¡¢
)
5. Press the REC/REC MUTE and NAME key in order, and light the LD.
<Adjustment of CD-R Record Power>
6. Turn the JOG key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the REC/REC MUTE key, and adjust it.
(initial state is the coarse adjustment.)
7. Press the PLAY/PAUSE key to register the adjustment if the power became the adjustment value.
(assume the power when it was decided by A value)
When it is registered, shift to the Overdrive power adjustment automatically.
<Adjustment of CD-R Overdrive Power>
8. Turn the JOG key to adjust the power.
Switch the coarse adjustment and the fine adjustment by pressing the REC/REC MUTE key, and adjust it.
(initial state is the coarse adjustment.)
9. Press the ENTER key to register the adjustment if the power became the adjustment value.
10. Press the STOP key to goes out the LD, and adjustment is completed.
6.7.2 CD-R Record Power Adjustment
0.9 mW
±
0.05 mW
Optimizing playback power of laser diode.
Incapable of disc discrimination, playback, or track searches. Or track skipping.
Pickup objective lens
Test Point
Adjustment Value
Symptom when Out of Adjustment
Purpose
Adjustment method
FL Indication
R REC : 4.3 mW
±
0.1 mW (=A value) ; R Over Drive : A value + 0.1mW
±
0.01 mW
Pickup objective lens
Optimizing CD-R recording power of laser diode.
Incapable of CD-R recording, playing CD-Rs recorded on it. Sound pauses,
track skipping, or bad RF wave form (though no failure in playing CD).
Test Point
Adjustment Value
Purpose
Symptom when Out of Adjustment
Adjustment method
FL Indication
DANGER – LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
DANGER – LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
Summary of Contents for PDR-W839
Page 21: ...PDR W839 21 A B C D 5 6 7 8 5 6 7 8 3 5 A A 1 5 A 2 5 A 4 5 A 1 5 Servo Amp IC Multiplexer ...
Page 39: ...PDR W839 39 ...
Page 51: ...PDR W839 51 A B C D 5 6 7 8 5 6 7 8 H PNP1480 C SIDE A CN502 A 301 CN302 A ...
Page 53: ...PDR W839 53 A B C D 5 6 7 8 5 6 7 8 H IC601 Q492 Q401 Q428 IC1811 IC901 Q490 Q481 1 SIDE B ...
Page 56: ...PDR W839 56 A B C D 1 2 3 4 1 2 3 4 I L HEAD PHONE ASSY L OPERATING1 ASSY I IC701 Q708 ...
Page 94: ...94 PDR W839 Pin Function 1 5 PDC069 CD R CORE ASSY IC501 Encoder IC ...
Page 95: ...95 PDR W839 Pin Function 2 5 ...
Page 96: ...96 PDR W839 Pin Function 3 5 ...
Page 97: ...97 PDR W839 Pin Function 4 5 ...
Page 98: ...98 PDR W839 Pin Function 5 5 ...
Page 103: ...103 PDR W839 ...