Led Head Cannot Be Recognized. (Error Code 131, 132, 133, 134); Service Call 131 To 134 (Led Head Missing) - Oki C710 Maintenance Manual

Oki Data CONFIDENTIAL
Check item
(14-1-2) Check the system connection
Check the system Check that the cable between the PU board
connection from option connector
the PU board to the normally connected.
option tray board
(V7Y PCB).
Square connector Check if any foreign material exists in the
connecting the connecting portion of the square connector.
option tray unit to
the printer.
Square connector Is the terminals of the square connector
connecting the damaged?
option tray unit to
the printer.
(14-2-3) Check the control signals.
Check the control Check the control signal that is output from the
signal that is output PU board option connector
from the PU board
Pin-5: TXD (PU
to the option tray
Pin-3: RXD (2nd
board (V7Y PCB).
43856301TH Rev.3
Action to be taken
Check work
at NG
Correct the
to the option tray board is connections.
Remove the
foreign material.
Replace the
connector.
Replace the PU
. board.
2nd)
PU)

7.5.2. (15) LED head cannot be recognized. (error code 131, 132, 133, 134)

(15-1) Service call 131 to 134 (LED HEAD Missing)

Check item
(15-1-1) Check the system connection
Connecting Check the connecting condition of the FFC by
condition at the CU the visual inspection.
board 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 capacitors
fuse on the CU CP7 and CP8. (Refer to section 7.6.)
board.
7. Troubleshooting and repair procedure
Action to be taken
Check work
at NG
Correct the
connection
to the normal
connecting
condition.
Replace the
head FFC or the
CU board.
Replace F504,
F506 or replace
the CU board.
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