44346001TH Rev.1
175 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.5.2. (13) Print speed is slow. (Performance is low.)
(13-1) Print speed decreases.
Check item
Check operation
Actions for NG
results
(13-1-2) Media Weight setting
Media Weight that
is specified for the
print
Check if the wrong Media Weight has been
specified or not.
Correct the
Media Weight.
7.5.2. (14) Option unit cannot be recognized.
(14-2) Option try unit cannot be recognized.
Check item
Check operation
Actions for NG
results
(14-2-1) Option try board
Option tray unit
Check if the option tray unit in use is of
C310dn, C330dn, C510dn, or C530dn
specification.
Replace it with
an appropriate
option tray unit.
(14-1-2) Check the system connection
Connection
between the CU/
PU board and the
option tray board
(V7Y PCB)
Check that the cord between the 2ND
connector
of the CU/PU board and the
option tray board is properly connected.
Correct the
connections.
Square connector
connecting the
option tray unit with
the main unit
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 with
the main unit
Is the terminals of the square connector
damaged?
Replace the
connector.
Check item
Check operation
Actions for NG
results
(14-2-3) Check the control signals.
Control signal that
is output from the
CU/PU board to the
option tray board
(GOG-1 PCB)
Check the control signals that are output from
the 2ND connector ▲ of the CU/PU board.
Pin 6: TXD (PU -> 2nd)
Pin 5: RXD (2nd -> PU)
Replace the
CU/PU board.
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
Check operation
Actions for NG
results
(15-1-1) Check the system connection
Connecting
condition of the
CU/PU board
connector and 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
CU/PU board.
Conduction of the
fuse on the CU/PU
board
Check that measurements taken at both ends
of each capacitor CP6 (C530/C330) and CP8
(C510/C310) show 5V. (See section 7.6.)
Or, instead of the above, check if each fuse
F501 (C530/C330) and F6 (C510/C310) is
open or not.
Replace the
CU/PU board.