Pioneer AVH-P4100DVD/XNEW5 Service Manual page 106

1
- SKEW adjustment
When one of the following replacements has taken place, SKEW adjustment for the pick up will be required.
(1) Replacement of the pick up unit
A
(2) Replacement of the spindle motor
(3) Replacement of the carriage chassis
(4) Replacement of the main shaft of the pick up unit
Measurement equipment and tools/jigs: Oscilloscope
Driver for SKEW adjustment -> Driver
Bond for fixing the SKEW -> GEM1033
Bond for resonance -> 1530 (1530 : produced by THREE BOND)
Bond for locking the screw -> 1401M (1401M : produced by THREE BOND)
Disc used:TDV-582
B
Measurement reference: AGND3
Measurement point: RF
Connection drawing
DVD core unit
C
D
E
Symptom in case the adjustment is not adequate: Worsening of the error rate 10
* Caution: Do not look into the laser light during adjustment.
F
106
1
2
AGND3
AGND3
RF
RF
Expansion
-4
(Normally 10 or less.)
Large RF jitter
RF waveform distortion
Tracking drawing/Unstable servo
AVH-P4100DVD/XN/UC
2
3
Oscilloscope
-3
3
4
4