Print Speed Is Slow. (Performance Is Low.); Print Speed Decreases; Option Unit Cannot Be Recognized; Option Try Unit Cannot Be Recognized - Oki C310dn Maintenance Manual

Oki Data CONFIDENTIAL

7.5.2. (13) Print speed is slow. (Performance is low.)

(13-1) Print speed decreases.

Check item
(13-1-2) Media Weight setting
Media Weight that Check if the wrong Media Weight has been
is specified for the specified or not.
print

7.5.2. (14) Option unit cannot be recognized.

(14-2) Option try unit cannot be recognized.

Check item
(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.
(14-1-2) Check the system connection
Connection Check that the cord between the 2ND
between the CU/ connector
PU board and the option tray board is properly connected.
option tray board
(V7Y PCB)
Square connector Check if any foreign material exists in the
connecting portion of the square connector.
connecting the
option tray unit with
the main unit
Square connector Is the terminals of the square connector
damaged?
connecting the
option tray unit with
the main unit
44346001TH Rev.1
Check operation Actions for NG
Correct the
Media Weight.
Check operation Actions for NG
Replace it with
an appropriate
option tray unit.
Correct the
connections.
of the CU/PU board and the
Remove the
foreign material.
Replace the
connector.
Check item
(14-2-3) Check the control signals.
results
Control signal that
is output from the
CU/PU board to the
option tray board
(GOG-1 PCB)

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
results
(15-1-1) Check the system connection
Connecting
condition of the
CU/PU board
connector and the
head connector
Head FFC
Conduction of the
fuse on the CU/PU
board
Check operation
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)
Check operation
Check the connecting condition of the FFC by
the visual inspection.
Remove the head FFC from the printer. Check
if any open-circuit or peeling-off of sheath has
occurred or not throughout the cable.
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.
7. TROUBLESHOOTING
Actions for NG
results
Replace the
CU/PU board.
Actions for NG
results
Correct the
connection
to the normal
connecting
condition.
Replace the
head FFC or
CU/PU board.
Replace the
CU/PU board.
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