Hitachi  42PD8900TA, Service Manual

Page: 47 / 116

47
42PD8900TA
Main Picture [Main PWB Circuit]
No picture, no color or dark
Sub picture?
No
(Signal picture or Main picture )
Check FC PWB
Yes(Sub picture)
No
Yes
Check Q601, Q602, Q603
No
Yes
Yes
(RGB) or Component
Video except 480i and 576i)
Check I601
Check Q520, Q521, Q522
No
(Component Video for 480i,
576i/RF/Composit Video/S-Video)
(Component Video
for 480i and 576i)
Yes
Yes
Yes
Check I501
No
No
RF or Composit Video ?
Yes (RF or Composit Video)
No
No
(Component Video for 480i,
576i/S-Video)
No
(S-Video)
Check I501
Check Q207, Q217, Q218, Q219
No
No
No
No
Check I201 and Input terminal
RF Input?
No
(Composit Video)
Yes (RF)
Check I201
No
Check U101
Trouble of Sub picture
Yes
Check I204
Yes
Check Q214, Q215, Q216
Yes
Check I501
Check I601
and Input terminal
Yes
Yes
Check Q207, Q217, Q219
Check I201 and Input terminal
Yes
Yes
Are waveform at
TP605(Y), TP606(Cb), and
TP607(Cr)?
RGB Input or
Component Input?
(except 480i and 576i)
Are waveforms at
72pin(Y), 74pin(Cb), and
76pin(Cr) of I601?
Are waveforms at
62pin(Y), 65pin(Cb), and
68pin(Cr) of I501?
Is
waveform at 148pin(CV) of
I501?
Is
waveform at 44pin(CV) of
I201?
Is
waveform at 63pin(CV)
of I201?
Component Video for
480i, 576i ?
Are waveforms at
64pin(Y), 62pin(Cb), and
60pin(Cr) of I601?
Yes
Are waveforms at
152pin(Y), 162pin(Cb), and
170pin(Cr) of I501?
Are waveforms at
6pin(Y), 5pin(Cb), and
3pin(Cr) of I204?
No
No
Are waveforms at
8pin(Y), 11pin(Cb), and 16pin(Cr)
from AV1 or 9pin(Y), 14pin(Cb), and
1pin(Cr) from AV2 of
I204?
Are waveforms at
150pin(Y) and 158pin(C) of
I501?
Are waveforms at
44pin(Y) and 47pin(C) of
I201?
Check Input terminal