Hitachi 42PD7200 Service Manual page 35

Trouble of Sub picture
Are waveforms at
TP63(H) and
TP64(V) ?
NO
Are waveforms at
45pin(H) and 48pin(V)
of I601?
NO
Component Input ?
NO
(RF/Composite Video/
S-Video/RGB-Video/HDMI)
RGB-Video Input ?
NO
(RF/Composite Video/
S-Video/HDMI)
HDMI Input ?
NO
(RF/Composite Video/S-Video)
Are waveforms at
33pin(H) and 34pin(V)
of I601?
NO
RF Input or Composite
Video Input ?
NO
(S-Video)
Is waveform at
44pin(Y) of I502?
NO
Is waveform at
56pin(Y) of I201?
NO
Check I201 and Input terminal
42PD7200 (PW2)
YES
Check Formatter PWB
YES
Check I602
YES (Component Video)
Check I601 and Input terminals
YES (RGB-Video)
YES (HDMI)
YES
Check I601
YES (RF/Composite Video)
YES
Check I502 and Q209
YES
Check Q512 and Q209
Is waveform at
38pin(CV) of I601?
NO
Is waveform at
1pin(CV) of I502?
NO
Is waveform at
53pin(CV) of I201?
NO
Check I201 and Input terminal
Is waveform at
25pin(Y) of I601?
NO
Check HDMI PWB
Is waveform at
1pin(CV) of I502?
NO
Is waveform at
53pin(CV) of I201?
NO
RF Input ?
NO
(Composite Video)
Check I201 and Input terminal
34
YES
Check I601
YES
Check I502, Q209 and Q519
YES
Check Q209 and Q511
YES
Check I601
YES
Check I502
YES
Check Q209 and Q511
YES (RF)
Check I201 and SUB-TUNER PWB