Option Unit Cannot Be Recognized; Option Try Unit Cannot Be Recognized; Led Head Cannot Be Recognized. (Error Code: 131, 132, 133 And 134); Errors 131 To 134 (Led Head Missing) - Oki MC873dn Maintenance Manual

Oki Data CONFIDENTIAL

2.5.5. (8) Option unit cannot be recognized.

(8-1)

Option try unit cannot be recognized.

Check item
(8-1-1) Option try board
Option try unit Check if the option try unit of this model
specification is being used or not.
(8-1-2) Check the system connection
Check the system Check that the cable between the CU/PU board
connection from the option connector to the option tray board is
CU/PU board to the normally connected.
option tray board
(GOH-1 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.
(8-1-3) 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 CU/PU Pin-15: OPTCNT2 (PU
board to the option Pin-17: TXD (PU
tray board (GOH-1-2 Pin-19: RXD (2nd
PCB).
45850101TH Rev.1
Actions to be taken
Check work
at NG
Replace the
option tray unit.
Correct the
connections.
Remove the
foreign material.
Replace the
connector.
Pin-17: Replace
the CU/PU
2nd) board.
2nd) Pin-19: Replace
PU) the option tray
board.

2.5.5. (9) LED head cannot be recognized. (Error code: 131, 132, 133 and 134)

(9-1)

Errors 131 to 134 (LED HEAD Missing)

Check item
(9-1-1) Check the system connection
Connecting condition Check the connecting condition of the FFC by
at the CU/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 is measured at the ends of the
fuse on the CU/PU capacitors CP3 and CP4, and also check if
board. the fuse F12, F15 or F16 is open-circuited.
2. TROUBLESHOOTING PROCEDURES
Actions to be taken
Check work
at NG
Correct the
connection
to the normal
connecting
condition.
Replace the
head FFC or the
CU/PU board.
Replace the CU/
PU board.
2-68