High Voltage Power Supply Leak; E3-20 Main Motor Rotation - Panasonic FP-7742 Service Manual

E3-10: High voltage power supply leak (1)
When a leak is detected from the high voltage power supply charge/transfer corona.
Is the charge/transfer corona dirty?
NO
Does the ground terminal float
from the copier frame?
NO
.
E3-11: High voltage power supply leak (2)
When a leak is detected from the high voltage power supply separation corona.
Is the separation corona dirty?
NO
Does the ground terminal float
from the copier frame?
NO
.
E3-20: Main motor rotation
When the main motor is turned ON/OFF, the signal
is/not detected.
Does the main motor rotate during
copier warm up?
NO
Is voltage detected at the LVPS
CN852-1 ?
YES
YES Clean the charge/transfer corona.
YES Tighten screw(s) on the ground terminal of
HVPS PCB or HVPS bracket.
CPU PCB is defective.
YES Clean the separation corona.
YES Tighten screw(s) on the ground terminal of
HVPS PCB or HVPS bracket.
CPU PCB is defective.
YES Main motor connector is shorted or broken.
CPU PCB is defective.
NO Main motor is defective.
LVPS is defective.
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