Sharp LC-26AD22U Service Manual page 32

Lcd color television/dvd video player
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THE PICTURE DOES NOT
APPEAR (1)
Does backlight shine?
Yes
Is CD7201 connected?
Yes
Is there voltage at pin
28,29,30 and 31 of
CP2407 12V?
Yes
Is there signal at pins 7,
8, 10, 11, 13, 14, 16, 17,
19 and 20 of CD7201?
No
Is there signal at IC2405?
Yes
Check DIGITAL PCB.
TROUBLESHOOTING GUIDE
Is there voltage at pins
No
1, 2,3, 4and 5 of CP406
12V?
No
Connected CD7201.
No
Check Q3410 and
peripheral circuit.
Yes
No
No
Yes
E-3
Check D436, D437 and
peripheral circuit.
Change V2301(PANEL).
Change IC2405.

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