Oki Data CONFIDENTIAL
45850101TH Rev.1
2-68
2. TROUBLESHOOTING PROCEDURES
2.5.5. (8) Option unit cannot be recognized.
(8-1)
Option try unit cannot be recognized.
Check item
Check work
Actions to be taken
at NG
(8-1-1)
Option try board
Option try unit
Check if the option try unit of this model
specification is being used or not.
Replace the
option tray unit.
(8-1-2)
Check the system connection
Check the system
connection from the
CU/PU board to the
option tray board
(GOH-1 PCB).
Check that the cable between the CU/PU board
option connector to the option tray board is
normally connected.
Correct the
connections.
Square connector
connecting the
option tray unit to
the printer.
Check if any foreign material exists in the
connecting portion of the square connector.
Remove the
foreign material.
Square connector
connecting the
option tray unit to
the printer.
Is the terminals of the square connector
damaged?
Replace the
connector.
(8-1-3) Check the control signals.
Check the control
signal that is output
from the CU/PU
board to the option
tray board (GOH-1-2
PCB).
Check the control signal that is output from the
PU board option connector.
Pin-15: OPTCNT2 (PU 2nd)
Pin-17: TXD (PU 2nd)
Pin-19: RXD (2nd PU)
Pin-17: Replace
the CU/PU
board.
Pin-19: Replace
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
Check work
Actions to be taken
at NG
(9-1-1)
Check the system connection
Connecting condition
at the CU/PU board
connector and at the
head connector.
Check the connecting condition of the FFC by
the visual inspection.
Correct the
connection
to the normal
connecting
condition.
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.
Replace the
head FFC or the
CU/PU board.
Conduction of the
fuse on the CU/PU
board.
Check that 5V is measured at the ends of the
capacitors CP3 and CP4, and also check if
the fuse F12, F15 or F16 is open-circuited.
Replace the CU/
PU board.
