8-4 FL10.3TR
P-ON+3.3V is not output.
FLOW CHART NO.14
Is approximately +5V voltage supplied to the
cathode of D633?
Is the "H" signal (approximately +3.5V) inputted to the
base of Q637?
No
Ye s
Ye s
Check C633, D633 and their periphery circuit, and
service it if defective.
Check Q638, Q639, D666, P-ON-H2 line and their
peripher
y circuit, and service it if defec
tive.
No
Replace Q637.
P-ON+9V is not output. (LCD+16V is outputted normally.)
FLOW CHART NO.15
Is approximately +13V voltage supp
lied to the
collector of Q642?
Is approximately +10V voltage supplied to the
base of Q642?
Is approximately +5V voltage supplied to Pin(3) of
IC631?
No
Ye s
Ye s
Ye s
Check D670 an
d their periphery circuit, and service
it if defective.
No
Check Q635, D659 and their periphery circuit, and
service it if defective.
See FLOW CHART No.5 <AL+33V is not output.>
See FLOW CHART No.12 <AL+13V(M+13V) is not
output.>
No
No
AL+3.3V is not output.
FLOW CHART NO.16
Is approximately +34V voltage supplied to the
collector of Q635?
Ye s
Replace IC631.
Replace Q642.
Check C632, D632 and their periphery
circuit, and service it if def
ective.
Check Q207, Q208, D208, P-ON-H1 line a
nd their
periphery circuit, and ser
vice it if defective.
Replace Q211.
Is approximately -
8V voltage supplied to the
base of Q211?
Ye s
No
No
LCD-6.8V is not output.
FLOW CHART NO.17
Is approximately -9V voltage supplied to the
Anode of D632?
Ye s
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