Sharp PG-A20X Manuale di Servizio Scaricare il pdf (Pagina 37)

PG-A20X

YES

Checking the S-video

system

Is the specified voltage EA

connectors?

Check power circuit and its

parts.

Is the lamp on ?

Go to "Lamp light-up".

YES

Is the video signal inputted

into the pins(43) and (44)

of IC3105?

Check the video terminal

and its peripheral circuits.

YES

Go to "Checking IC3102"

Checking the video

system

Is the specified voltage EA

connectors?

Check power circuit and its

peripheral parts.

Is the lamp on ?

Go to "Lamp light-up".

YES

Is the video signal inputted

into the pin(7) of IC3506?

Check the video terminal

and its peripheral circuits.

YES

Check IC3105 and its

peripheral circuits.

Check IC1103 and its

peripheral circuits.

Is the signal inputted into

the pins(39) and (41) of

IC3105?

Check Q3501, Q3502 and

their peripheral circuits.

YES

Is the video signal

outputted from the pins(25)

and (27) of IC3506?

Check IC3506 and its

peripheral circuits.

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 123 124

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Sharp PG-A20X Manuale di Servizio Pagina 37

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