Sharp LC-26AD22U Service Manual - Page 36

Check pins AD18 and AF19

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TROUBLESHOOTING GUIDE DISC DOES NOT EJECT Does OSD appear No on the screen? Yes Is remote key set No effectively? Yes Check pins 138 and 139 of IC4001 and peripheral circuit. Does this eject disc at No change DVD DECK? Yes Change DVD DECK. Does this have signal at No pins 4 and 5 of CP2302? Yes Does this have signal at No pins 1 and 2 of CP2302? Yes Change IC4001. Check pins AD18 and AF19 of IC2401 and peripheral circuit. Check IC2301 and peripheral circuit. Change IC2301. E-7

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TROUBLESHOOTING GUIDE
Does this eject disc at
change DVD DECK?
Change DVD DECK.
Does OSD appear
on the screen?
Is remote key set
effectively?
Check pins AD18 and AF19
of IC2401 and peripheral
circuit.
Yes
No
No
No
Yes
Yes
DISC DOES NOT EJECT
Does this have signal at
pins 4 and 5 of CP2302?
Check IC2301 and
peripheral circuit.
No
Does this have signal at
pins 1 and 2 of CP2302?
No
Yes
Change IC4001.
Yes
Check pins 138 and 139
of IC4001 and peripheral
circuit.
Change IC2301.
E-7