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PDR-F10
6.6.6 SPP Offset Adjustment
Test Point
Adjustment Value
Purpose
Symptom when Out of Adjustment
[Procedure]
1. Press the CX key and shift to the SPP Offset Adjustment.
2. Monitor the MPX waveform with VC.
2. Adjust the SCAN key so that SPP offset becomes zero.
3. Press the SARCH key to register the adjustment.
CN102
3
MPX
10: 1 prove
6
VC
6.6.7 Tracking Gain adjustment
Test Point
Adjustment Value
Purpose
Symptom when Out of Adjustment
[Procedure]
1. Press the CX key and shift to the Tracking Gain (MS MIX) Adjustment.
2. Move the Pickup to center of the disc by pressing the CHAPTER key. (
3. Monitor the MPX signal and set a CD disc.
4. Press the 2 x3 key to FOCUS IN.
5. Press the PLAY key to turn the SPINDLE. (CAV)
6. Adjust the SCAN key so that MPX waveform (MPP+SPP) becomes minimum.
7. Press the SEARCH key to register the adjustment.
8. Press the STOP key to stop the disc rotation.
CN102
39kΩ
3
MPX
0.001µF
6
VC
54
CN102-pin 3 (MPX)
0 mV ± 50 mV
Optimizing DC offset voltage of sub-signal output circuit.
Playback does not function, incapable of searching, or track jumping.
Adjustment method
Oscilloscope
CN102-pin 3 (MPX)
Minimize (MPP+SPP)
Matching gains of pickup main signal output and sub-signal output.
Playback does not function, or incapable of searching.
Adjustment method
10: 1 prove
Oscilloscope
4 ¢ )
FL Indication
FL Indication
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