Pioneer AVH-P4150DVD Service Manual page 104

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QQ
3 7 63 1515 0
- 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
TE
L 13942296513
D
E
Symptom in case the adjustment is not adequate: Worsening of the error rate 10
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* Caution: Do not look into the laser light during adjustment.
F
104
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AGND3
AGND3
Expansion
-4
(Normally 10 or less.)
Large RF jitter
RF waveform distortion
Tracking drawing/Unstable servo
x ao
y
. i
AVH-P4150DVD/XN/RC
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8
RF
RF
Q Q
3 6 7 1 3
Oscilloscope
-3
u163
.
3
4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
4
9 9
2 8 9 9