VC-V50S
VC-V80T
VC-V91T
42
No picture E-E signal. (by pass)
Is picture signal input into the pin(30) of IC201?
YES
YES
YES
YES
NO
NO
NO
NO
NO
Check the line between external video input terminal (J203) and
pin(31) of IC201.
Is picture signal outputted to the pin(52) of IC201?
Check the line between pins(63) and (62) of IC201
and all the way up thru to pins(53) and (54) of IC801.
Is picture signal output to the emitter of video output buffer
(Q251)?
1
Line output: Check video output buffer(Q251) peripheral and output terminal periphery.
2
RF output: Check video output buffer(Q251) peripheral and video input terminal of RF converter periphery.
Is supply voltage of 5V(Y-Vcc) fed to the pin(12) of IC201?
Check the PC 5V line.
Is there Y/C serial data and Y/C signal clock applied
to the pins(63) and (62) of IC201?
Check peripheral circuit of Q251.
FLOW CHART NO.17 E-E MODE TROUBLESHOOTING
Содержание VC-V50S
Страница 46: ...VC V50S VC V80T VC V91T 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM 46 47 ...
Страница 48: ...VC V50S VC V80T VC V91T 50 POWER CIRCUIT BLOCK DIAGRAM ...
Страница 58: ...VC V50S VC V80T VC V91T 66 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 LED PWB VC V91T OPERATION PWB ...
Страница 73: ...Ref No Part No Description Code Ref No Part No Description Code VC V50S VC V80T VC V91T 81 ...