Zenith XBR411 - Tv, External Input Video Signal

3-64
4. No TV, External Input video signal
No : TV signal No : AV1 signal No : AV2 signal No : S-JACK signal
TV 701-17
Check signal And
circuit
IC602 - 1 IC602 - 3
IC7711 – 1, 3, 8
check
Replace X501 X-
TAL
IC602 – 5 checkC331
IC602 – 7
Check output
IC301 - 32
IC301 – 26 check
Q307 collector
Signal, power 12 V
C644, Q605, C645
Check circuit
FL501
Check signal
IC301 - 28
YESYESYES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
IC502-34 : HIGH
/RST_VDEC
R4103, R4106
signal
YES
NO
when reset IC502
– 28, 29 Check I
2
C
Clk, Data
Check R533,
R526 Signal and
3.3V level
YES
NO
check IC502 - 40
(VI_CLK)
Check X501 clock
oscillated
YES
NO NO
<When playing DISC, no COMPONENT,
COMPOSIT/S-VIDEO signal> Check
IC502 -> IC101
Check VI_D0~VO_D9
signal
Check IC502
power and other
circuits
YES
NO
NO NO