Sharp AQUOS LC-60C6400U Wartungshandbuch PDF herunterladen (Seite 60)

LC-52/60/70LE640U,C6400U (1st Edition)

6 – 7

• Picture does not display.

No video (1)

COMPOSITE: No external input video [INPUT-6] COMPOSITE: No external input video [INPUT-7]

Is INPUT-6 selected on the input select menu screen? Is INPUT-7 selected on the input select menu screen?

YES

Select INPUT-6 on the input select menu

screen for the right input signal.

Select INPUT-7 on the input select menu

screen for the right input signal.

Is there the COMPOSITE signal input at pin (AJ23) of

IC3303 (CPU)?

Is there the COMPOSITE signal input at pin (AK22) of IC3303

(CPU)?

YES

Check the line between pin (10) of J510

and pin (AJ23) of IC3303.

Check the line between pin (5) of J510 and

pin (AK22) of IC3303.

Is the T-CON PWB connected?

VBO_HTPDN (40pin), VBO_LOCKN (39pin) of P2604 become Low if there is no problem in

the connection.

NO Check the panel module and harness.

YES

Are the V-By-One signal input to the pin of P2604?

VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),

VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).

NO Check IC3303 and its peripheral circuits.

(IC3501/IC3502/IC3503, etc.)

YES

Check the panel module and harness.

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Sharp AQUOS LC-60C6400U Wartungshandbuch Seite 60