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Pioneer PDP-42A3HD Service Manual page 72

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1
6. No Video Signal (S-VHS)
Preliminary Checkpoints
A
Check the condition of connectin of the input S-VHS signal.
Check the condition of soldering state in S-VHS & input part
Check the short poi nt in signal line.
Check for short circuits between each power terminal and the ground.
B
#10,12(1),17,19(2),24,26(3)
C
D
E
F
T06
72
1
2
No S-VHS
signal (SMPTE Color Bars)
at U706
in DTT & Analog B/D
Waveform
#121,128
At U711
In DTT&Analog Board
Waveform
Dose the signal
appear at PR22,24
25,26 In DTT&Analog
B/D
Waveform 11
Dose the signal
appear at
PR29,31,34,35,38,39
In digital B/D
Waveform 12
Check the LVDS Cable
and JP500
in Digital B/D
Change Digital B/D
2
3
(1):S-VIDEO01
(2):S-VIDEO01
(3):S-VIDEO01
NG
16,16-1
NG
17,17-1
NG
NG
NG
PDP-42A3HD
3
4
Check CVBS input
part
Check U706 &
input part of U711
Check U16 and
Y2 and related circuit
Check U20 and
X2 and related circuit
Change the LVDS Cable
&LVDS chip
4
T06

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