MINOLTA-QMS 4060 Service And Parts Manual page 175

Troubleshooting Procedure
Replaia or replace damaged
part.
Remove the rear cover.
Check for pinched wires, cables, and
damaged connectors between:
•CN11 on the mechanism controller
PCB and CN4 on the optical unit.
Especially for the pin5 of the
connector CN11 on the mechanism
controller.
(+24V for the spindle motor)
•CN15 on the mechanism controller
PCB and CN2 on the optical unit.
Especially for pin33 and pin34 of
the connector CN15 on the
mechanism controller PCB.
(+24V for the laser diode)
Yes
Pinched wires or cables, or
damaged connectors.
No
Run testprint.
SVC7A error
still occur?
Yes
Clean the transfer charger and
transfer unit guide. (Scattered
developer or foreign particles
may occur the high voltage
leakage at the transfer charger.
The mechanism controllerPCB
may mis-detect the alarm by the
electric noise of the leakage.)
Verify repairs.
a
SERVICE MANUAL
No
Exit !
5-107