SHARP XGP10XE
Instrukcja Serwisowa

XG-P10XE

TROUBLE SHOOTING TABLE (Continued)
Checking the video system
Is the lamp on?

No

Yes
Go to "Lamp fails to light-up". Is specified voltage fed to EA connectors?

No

Yes
Check the power circuit and its parts. Are there signal inputs at pins (7), (9) and (25) of SC401?

No

Yes
Are there signals at pin (4) of IC6011? Are there signal outputs at pins (7) of IC6010 and (5) of IC6009?

Yes

No

Yes

No
Check IC6001, IC6010, IC6009 and their peripheral circuits as well as switching circuit.

Check the video unit circuit (IC4501 and IC4001 and its peripheral circuits).

Check the oscillation circuit of IC6011, and their peripheral circuits.

Go to "Checking IC801 (RGB signal output circuit)".

Checking the video unit circuit
Is there video signal output at pin (7) of IC401?

No

Yes

Check the IC401 selector switch, terminal voltage and input circuit.

Is there video signal input at IC4001?

No

Yes

Check the low-pass and buffer circuits of Q4002 thru Q4012.

Are there signal outputs at pins (6) and (8) of IC4001?

No

Yes

Check IC4001 and its peripheral circuits (bias).

Check the low-pass and buffer circuits No of Q6002 thru Q6008. Is the signal as specified?

Yes

Check Q4007 thru Q4009 and their peripheral circuits.

Go to "Checking IC801 (RGB signal output circuit)".

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