Sharp XG-C50X Service Manual page 33

TROUBLE SHOOTING TABLE (Continued)
Checking the S-video system
Is the lamp on ?
Yes
Is specified voltage EA
connectors?
Yes
Is the video signal inputted into the
pin (19) and (21) of P3102?
Yes
Is the Y-signal outputted from the
pin (7) of IC4502?
Yes
Is the C-signal outputted from the
emitter of Q4513?
Yes
Is the signal inputted into pin(72)
and (73) of P8002?
Yes
Go to "Checking the PC I/F unit".
No
Go to "Lamp fails to light-up".
No
Check power circuit and its parts.
No
Check the video terminal and its
peripheral circuits.
No
Check IC4502 and its peripheral
circuits.
No
Check Q4513 and its peripheral
circuits.
No
Check Q4502 and its peripheral
circuits.
33
XG-C50X