Oki Data CONFIDENTIAL
43967002TH Rev. 1
342 /
7. Troubleshooting
7.5.2. (14) Option unit cannot be recognized.
(14-1) Duplex unit cannot be recognized.
Check item
Check work
Action to be taken at NG
(14-1-1) Duplex PCB
Duplex motor
Check if the Duplex unit of MC860
specification is being used or not
Replace the Duplex
motor.
(14-1-2) Check the system connection
Check the system
connection from
the PU PCB to the
Duplex PCB (V7Y
PCB).
Check that the cable between the PU PCB
option connector to the Duplex PCB is
normally connected.
Correct the
connections.
Square connector
connecting the
Duplex 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
Duplex unit to the
printer.
Is the terminals of the square connector
damaged?
Replace the
connector.
(14-1-3) Check the control signals.
Check the control
signal that is output
from the PU PCB
to the Duplex PCB
(V7Y PCB).
Check the control signal that is output from
the PU PCB option connector .
pin-6: TXD (PU DUP)
pin-4: RXD (DUP PU)
Replace the PU
PCB.
(14-2) 2nd tray unit cannot be recognized.
Check item
Check work
Action to be taken at NG
(14-2-1) 2nd PCB
2nd tray unit
Check if the 2nd tray unit of MC860dn
specification is being used or not.
Replace 2nd tray
unit.
(14-1-2) Check the system connection
Check the system
connection from the
PU PCB to the 2nd
tray unit (V7Y PCB).
Check that the cable between the PU PCB
option connector to the 2nd tray unit is
normally connected.
Correct the
connections.
Square connector
connecting the
2nd 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
2nd tray unit to the
printer.
Is the terminals of the square connector
damaged?
Replace the
connector.
(14-2-3) Check the control signals.
Check the control
signal that is output
from the PU PCB
to the 2nd tray unit
(V7Y PCB).
Check the control signal that is output from
the PU PCB option connector .
pin-5: TXD (PU 2nd)
pin-3: RXD (2nd PU)
Replace the PU
PCB.
Содержание MC-860 / CX2633MFP
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Страница 377: ...Oki Data CONFIDENTIAL 8 Connection Diagrams 8 1 Resistance value check 378 8 2 Parts location 382 ...