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NO POWER
Is the voltage at the point (A)
in the Figure DC160V ?
No
Is the voltage at the point (B)
in the Figure DC164V ?
No
Is the voltage at the point (C)
in the Figure AC120V ?
No
Is the voltage at the point (E)
in the Figure AC120V ?
No
Is the voltage on both
ends of S501 AC120V ?
No
Broken wire of AC cord or check
S501.
MC-Service
TROUBLESHOOTING GUIDE
Yes
Is the voltage at pin G
of Q502 DC5V ?
No
Check Q514 and associated circuit.
Yes
Check R501 and R541.
Yes
Check the rectifying circuit.
Yes
Broken wire of L501.
Yes
Broken wire of F501.
No. 52001
Yes
Check Q502 and associated circuit.
T502
A
5
D
G
Q502
S
IC504
3
Q514
D501~D504
C
E
F501
AV-20F703
8
R501
B
L501
S501
CD501
15
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