Servo Adjustment - Pioneer PDR-F10 Service Manual

PDR-F10

6.6 SERVO ADJUSTMENT

Notes : Each test mode key uses remote control for service.
MANUAL ADJUSTMENT
6.6.1 Preparations
1. Enter the TEST mode.
2. Press the DIG/ ANA key so that "
3. Press the CLEAR key more than three seconds to initialize it.
4. Press the 3 x3 key to perform the average process.
\ "
" disappears on the FL display when completed.
6.6.2 Focus Offset Adjustment
Test Point
Adjustment Value
Purpose
Symptom when Out of Adjustment
[Procedure]
1. Monitor the FOCUS ERROR waveform with VC.
2. Adjust the SCAN key so that FE offset becomes zero.
3. Press the SEARCH key to register the adjustment.
CN102
8
FE
10: 1 prove
6
VC
6.6.3 SRFO Offset Adjustment
Test Point
Adjustment Value
Purpose
Symptom when Out of Adjustment
[Procedure]
1. Press the CX key and shift to the SRFO Offset Adjustment.
2. Monitor the RFDC waveform with VC.
2. Adjust the SCAN key so that RFDC offset becomes zero.
3. Press the SEARCH key to register the adjustment.
CN102
2
RF
10: 1 prove
6
VC
52
" appears on the FL display.
CN102-pin 8 (Focus err)
0 mV ± 30 mV
Optimizing DC offset voltage of focus-error amplifier.
Focal-in does not function, or bad RF wave shape.
Adjustment method
Oscilloscope
CN102-pin 2 (RF)
0 mV ± 30 mV
Optimizing DC offset voltage of RFDC output circuit when recording.
Recording does not function.
Adjustment method
Oscilloscope
FL Indication
FL Indication