9-3 A17FYTR
P-ON+12V is not output.
FLOW CHART NO.9
Is approximately +12V voltage supplied to the
drain of Q651?
Is approximately +21.5V voltage supplied to the
gate of Q651?
Is approximately +5V voltage supplied to the base of
Q674?
No
Ye s
Ye s
Ye s
Check Q652, Q653, P-ON-H2 line and their
peripher
y circuit, and service it if de
fective.
Check C656, C657, C658, C659, D656, D657, D658,
D659 and their periphery circuit, and service it if
defective.
No
Check C702, IC
653, R757, R758 and their periphery
circuit, and service it if def
ective.
See FLO
W CHART No
.5 <AMP+
24V is not output.>No
No
AL+4.3V is not output.
FLOW CHART NO.10
Is approximately +24V voltage supp
lied to the
collector of Q674?
Ye s
Replace Q674.
Replace Q651.
Check C694, D680 and their periphery circuit, and
service it if defective.
Check Q665, Q666, D670, P-ON-H1
line and their
periphery circuit, and ser
vice it if def
ective.
Replace Q668.
Is approximately -8.5V voltage supplied to the
base of Q668?
Ye s
No
No
LCD-5V is not output.
FLOW CHART NO.11
Is approximately -9V voltage supp
lied to the
anode of D680?
Ye s
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