Hitachi 42PD9700C Service Manual page 49

C
Trouble of Sub picture
Are waveform at
TP608(Y), TP609(Cb), and
TP610(Cr)?
No
Are waveforms at
42pin(Y), 44pin(Cb), and
46pin(Cr) of I601?
No
RGB
Input(DTT,SCART) or Compo-
nent Input?
No
(RF/Composit
Video/S-Video)
Are waveforms at
78pin(Y), 80pin(Cb), and
2pin(Cr) of I601?
No
Are waveforms at
21pin(Y), 22pin(Cb), and
23pin(Cr) of I504?
No
RF or Composit Video ?
No
(S-Video)
Are waveforms at
44pin(Y) and 43pin(C) of I504?
No
Are waveforms at
56pin(Y) and 58pin(C) of I201?
No
Check I201 and Input terminal
42PD9700 & 55PD9700
Yes
Check FC PCB
Yes
Check Q604, Q605, Q606
Yes
(RGB(DTT,SCART) or Component
Video except 480i and 576i)
Yes
Check I601
Yes
Check Q515, Q516, Q517
Yes
(RF or Composit Video)
Yes
Check I504
Yes
(Composit Video)
Check I201 and Input terminal
Check Q512, Q513
SCART
Yes(SCART,Comp)
or
Component?
No
(DTT)
Are waveform at
2pin(R), 4pin(G), 6pin(B) of
PMD1?
No
Check DTT Module, U101
and P702 on FC PCB
Is
Yes
waveform at 1pin(CV) of
I504?
No
Is
Yes
waveform at 53pin(CV)
of I201?
No
Check Q206 and Q511
Yes (RF)
RF Input?
No
48
Check I601
and Input terminal
Yes
Check around I601
Check I504
Is
Yes
waveform at 63pin(CV) of
I201?
No
Check I201
Check U101