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Oki Data CONFIDENTIAL
43967002TH Rev. 1
319 /
7. Troubleshooting
(2-2) Abnormal sound is heard
Check item
Check work
Action to be taken at NG
(2-2-1) Check loss of synchronization of motor (Driver error)
Operating
conditions of the
respective motors
Check if operations of the respective
motors are normal or not by using the self-
diagnostic mode.
Check if any extra load exists or not.
“Buzz buzz” sound is generated when an
error occurs.
PU PCB
replacement
Condition of the
motor cable
Check for normal wiring conditions of the
respective motors.
Perform the visual check and measure
resistance at open circuit with VOM as follows.
Remove the motor cable at the PCB end.
Measure resistance between the respective
pins of the removed cable and FG with VOM.
Replace the motor
cables.
Re-connect the
cable for normal
conditions.
(2-2-2) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating
conditions of the
respective motors
Check if operations of the respective
motors are normal or not by using the self-
diagnostic mode.
Check if any extra load exists or not.
“Buzz buzz” sound is generated when an
error occurs.
Replacement of the
various consumable
items. If any attempt
of using new part
as a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
Check item
Check work
Action to be taken at NG
(2-2-3) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating
conditions of the
respective motors
Check if operations of the respective
motors are normal or not by using the self-
diagnostic mode.
Check if any extra load exists or not.
“Buzz buzz” sound is generated when an
error occurs.
Replacement of the
various consumable
items.
If any attempt of
using new part as
a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
Installation condition
of each consumable
item
Check by visual inspection if the respective
consumable items are installed in their
normal positions in which gears of the
consumable items engage accurately or not.
Replace an
appropriate
mechanical part as
required, or adjust
or repair.
(2-2-4) Check the wiring conditions of cables
Wiring conditions
of the cables in
the vicinity of the
respective cooling
fans
Check if the cable contacts with the fan
blade because wiring conditions of the
cables near fan is poor or not.
“Clap, clap” sound is generated when an
error occurs.
Correct the wiring
conditions of the
cable.
(2-2-5) Check installation condition of mechanical parts
Check the installation
conditions of the
partition plate under
the CU and PU
PCBs.
Remove the CU and PU PCB, and inspect
the installation conditions of the partition
plate by visual inspection.
If they are not
hooked on the
normal specified
positions, correct
them.
Содержание MC860 MFP
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Страница 377: ...Oki Data CONFIDENTIAL 8 Connection Diagrams 8 1 Resistance value check 378 8 2 Parts location 382...