Led Head Cannot Be Recognized. (Error Code Ce82, Ce83, Ce84, Ce85); Service Call Ce82 To Ce85 (Led Head Missing) - Oki MC760 Maintenance Manual

7.5.4. (15) LED head cannot be recognized. (error code CE82, CE83, CE84, CE85)

(15-1) Service call CE82 to CE85 (LED HEAD Missing)

Check item
(15-1-1) Check the system connection
Connecting condition Check the connecting condition of the FFC by
at the PU board the visual inspection.
connector and at the
head connector.
Head FFC Remove the head FFC from the printer. Check
if any open-circuit or peeling-off of sheath has
occurred or not throughout the cable.
Conduction of the Check that 5V appears across the capacitor
fuse on the PU CP8. (Refer to section 7.6.)
board.
Check if the fuses F8 and F9 are not open-circuit
or not.
Action to be taken
Check work
at NG
Correct the
connection
to the normal
connecting
condition.
Replace the
head FFC or the
PU board.
Replace the PU
board.
7. Troubleshooting and repair procedure
193 /