JVC TV-13142 Service Manual page 36

TV-13142
TV-13142W
ONLY A LINE APPEARS
Is the normal signal at
pin 5 of IC401 output.
Is the normal signal at
pin 7 of IC401 input ?
Yes
Is the voltage at pins 6, 2
of IC401 DC25V ?
Yes
Check peripheral circuit of IC401
and CP401.
OSD SCREEN DOES NOT APPEAR
Is there a waveform at pins
62, 63, 64 of IC1001 ?
Yes
Is there a waveform at pins
14, 15 and 16 of IC601 ?
No
Check peripheral circuit of IC604.
36
TROUBLESHOOTING GUIDE
No
Yes
No
No
No
Yes
Check CP401.
Check peripheral circuit of IC601.
Check Q402.
Check IC1001 and the peripheral
circuit.
Check CRT PCB BLOCK