Service manual

29
PG-M20S
PG-M20X
Yes
No
Checking of Power Unit
Are connectors in the power unit
completely inserted?
Yes
No
Is the lamp door closed
completely?
Close the lamp door completely by
screws.
Yes
No
Does the temperature
fuse function?
Replace the fuse as well as its
harness.
Yes
No
Is AC voltage applied across relay
RL701?
Replace F701.
Yes
No
Is there DC voltage of about 6V at
pin (1) of CN7002?
Check Q7501, Q7502 and Q7503
and their peripheral circuits. If any
circuit is damaged, replace it.
Yes
No
Is there DC voltage of about 370V
across CN702?
Check the circuits connected to the
primary side of T701. If any circuit
is damaged, replace it.
Yes
No
Is there rated voltage at the output
terminals of CN702 and CN7102?
Check the circuits connected to the
secondary side of T701. If any
circuit is damaged, replace it.
Check the PWB circuits of relevant
output sides.
Insert the connectors CN702,
CN704, CN7003, CN7001,
CN7004 and CN7101 completely.