Print Speed Is Slow. (Performance Is Low.); Print Speed Decreases; Option Unit Cannot Be Recognized; Duplex Unit Cannot Be Recognized - Oki MC760 Maintenance Manual

Oki Data CONFIDENTIAL

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

(13-1) Print speed decreases.

Check item
(13-1-2) Media Weight setting
Media Weight that is Check if the wrong Media Weight has been
specified for the print specified or not.
45376001TH Rev.1
Action to be taken
Check work
at NG
Correct the
Media Weight.

7.5.4. (14) Option unit cannot be recognized.

(14-1) Duplex unit cannot be recognized.

Check item
(14-1-1) Duplex board
Duplex unit Check if the Duplex unit of MC7xx specification
is being used or not.
(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.
Duplex board (GOH-
10 PCB).
Square connector Check if any foreign material exists in the
connecting the connecting portion of the square connector.
Duplex unit to the
printer.
Square connector Is the terminals of the square connector
connecting the damaged?
Duplex unit to the
printer.
(14-1-3) 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 PU board
Pin-6: TXD (PU
to the Duplex board
Pin-4: RXD (DUP
(GOH-10 PCB).

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

Check item
(14-2-1) Option try board
Option try unit Check if the option try unit of MC7xx specification
is being used or not.
7. Troubleshooting and repair procedure
Action to be taken
Check work
at NG
Replace the
Duplex unit.
Correct the
to the Duplex board is connections.
Remove the
foreign material.
Replace the
connector.
Replace the PU
. board.
DUP)
PU)
Action to be taken
Check work
at NG
Replace the
option tray unit.
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