71
PDR-W839
[Procedure]
1. Press the AUTO SPACE key and shift to the SPP Offset Adjustment.
2. Monitor the MPX waveform with VC.
2. Adjust the JOG key so that SPP offset becomes zero.
3. Press the ENTER key to register the adjustment.
6.8.6 SPP Offset Adjustment
0 mV
±
50 mV
CN102-pin 3 (MPX)
Test Point
Adjustment Value
Optimizing DC offset voltage of sub-signal output circuit.
Playback does not function, incapable of searching, or track skipping.
Purpose
Symptom when Out of Adjustment
Adjustment method
FL Indication
CN102
MPX
VC
3
6
10: 1 prove
Oscilloscope
[Procedure]
1. Press the AUTO SPACE key and shift to the Tracking Gain (MS MIX) Adjustment.
2. Move the Pickup to center of the disc by pressing the SCAN key. (
41 ¡¢
)
3. Monitor the MPX signal and set a CD disc.
4. Press the FINALIZE key to FOCUS IN.
5. Press the PLAY/PAUSE key to turn the SPINDLE. (CAV)
6. Adjust the JOG key so that MPX waveform (MPP+SPP) becomes minimum.
7. Press the ENTER key to register the adjustment.
8. Press the STOP key to stop the disc rotation.
6.8.7 Tracking Gain adjustment
Minimize (MPP+SPP)
CN102-pin 3 (MPX)
Test Point
Adjustment Value
Matching gains of pickup main signal output and sub-signal output.
Playback does not function, or incapable of searching.
Purpose
Symptom when Out of Adjustment
Adjustment method
FL Indication
CN102
MPX
VC
3
6
10: 1 prove
Oscilloscope
39k
Ω
0.001
µ
F
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 ...