Troubleshooting - Emerson LD195EM8 Service Manual

FLOW CHART NO.1
The power cannot be turned on.
Is the fuse (F601) normal?
Is the INV+22V line voltage normal?
FLOW CHART NO.2
The fuse blows out.
FLOW CHART NO.3
When the output voltage fluctuates.
FLOW CHART NO.4
When buzz sound can be heard in the vicinity of power circuit.
FLOW CHART NO.5
+35V is not output.

TROUBLESHOOTING

Yes
Yes
Yes
Yes
Yes
No
See FLOW CHART No.2 <The fuse blows out.>
No
Check if there is any leak or short-circuiting on the
primary circuit component, and service it if defective.
(C615, D605, D606, D607, D608, Q601, Q603,
No
T601)
No
Check IC601, D933, Q913 and their periphery,
and service it if defective.
No
Check C907, D909 and their periphery circuit, and
service it defective.
9-1 A84N0TR