No Tv Signal - Pioneer PDP-42A3HD Training & Troubleshooting Manual

4. No TV Signal

Preliminary Checkpoints
Check the condition of connectin of the input TV signal.
Check the condition of soldering state in Tuner & input part
Check the short point in signal line.
Check for short circuits between each power terminal and the ground.
signal (SMPTE Color Bars)
In DTT&Analog Board
25,26 In DTT&Analog
PR29,31,34,35,38,39
Check the LVDS Cable
No TV
#63
at U706
in DTT & Analog B/D
Waveform 13
#119
At U711
Waveform 14
Dose the signal
appear at PR22,24
B/D
Waveform 11
Dose the signal
appear at
In digital B/D
Waveform 12
and JP500
in Digital B/D
Change Digital B/D
NG
Check A_CVBS1 input
NG
Check U706 &
input part of U711
NG
Check U16 and
Y2 and related circuit
NG
Check U20 and
X2 and related circuit
NG
Change the LVDS Cable
&LVDS chip
38
part