No Sync.
Check Formatter PWB
Are waveform at TP01(H) and
TP02(V) ?
Check I602
Are waveform at pin 16(H) and
28(V) of I601?
Yes
Yes
No
No
Single picture or Main picture Sub picture Trouble of Sub picture
Are waveforms at pin3(H) and
pin4 (V) of I601?
No
Check I601
Check I602
Are waveforms at pin24 of I601?
Check Q601, Q603, Q609,
Q610, etc.
Are waveforms at pin9 (H) and
pin4 (V) of I501?
Check I501, etc.
YesYes
Yes
No
No
Component Input (without 480i/576i) RF(TV) / Video Input / Component (480i/576i)