Acer P221W - FCC Declaration of Conformity

Acer Service Manual
3. No raster
No raster
END
LED Green?
Backlight can
not be turned on
Is O k IC501?
Is R526 O k?
Is ok T501, T502?
Is there pulse waveform on pin1,
pin3, pin15 and pin16 of IC501 at the
mom ent of restart?
Check CN501, CN502,
CN503 and CN504?
Is there high-level
voltage on pin8 of
IC501
Is there 14Vdc
voltage on pin13 of
IC501?
U501, U502 fail
Check I/F board
Check power
supply
R526 open
Connecting the
output connector
again
T501, T502 fail
Check protected
circuit Q 501, Q502,
Q503, Q 504
IC 501 fail
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
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