AVH-P4000DVD/XN/UC
68
1
2
3
4
1
2
3
4
C
D
F
A
B
E
-
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
(2) Replacement of the spindle motor
(3) Replacement of the carriage chassis
(4) Replacement of the main shaft of the pick up unit
(5) Replacement of the sub shaft of the pick up unit
Measurement equipment and tools/jigs: Oscilloscope
Driver for SKEW adjustment
t
TORX driver (T2) (GGK1095)
Bond for fixing the SKEW (GEM1033)
Bond for locking the screw (Locking agents(1401M : produced by THREE BOND))
Disc used: GGV1018
Measurement reference: AGND2
Measurement point: RF
Connection drawing
DVD core unit
Enlargement
Symptom in case the adjustment is not adequate: Worsening of the error rate 10
(Normally 10 or less.)
Large RF jitter
RF waveform distortion
Tracking drawing/Unstable servo
* Caution: Do not look into the laser light during adjustment.
Oscilloscope
RF
AGND2
-4
-3
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
