Abnormal Sound Is Heard - Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL

(2-2) Abnormal sound is heard

Check item
(2-2-1) Check loss of synchronization of motor (Driver error)
Operating Check if operations of the respective
conditions of the motors are normal or not by using the self-
respective motors diagnostic mode.
Check if any extra load exists or not.
"Buzz buzz" sound is generated when an
error occurs.
Condition of the Check for normal wiring conditions of the
motor cable 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.
(2-2-2) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating Check if operations of the respective
conditions of the motors are normal or not by using the self-
respective motors diagnostic mode.
Check if any extra load exists or not.
"Buzz buzz" sound is generated when an
error occurs.
43967002TH Rev. 1
Check work Action to be taken at NG
PU PCB
replacement
Replace the motor
cables.
Re-connect the
cable for normal
conditions.
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
(2-2-3) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating Check if operations of the respective
conditions of the motors are normal or not by using the self-
respective motors diagnostic mode.
Check if any extra load exists or not.
"Buzz buzz" sound is generated when an
error occurs.
Installation condition Check by visual inspection if the respective
of each consumable consumable items are installed in their
item normal positions in which gears of the
consumable items engage accurately or not.
(2-2-4) Check the wiring conditions of cables
Wiring conditions Check if the cable contacts with the fan
of the cables in blade because wiring conditions of the
the vicinity of the cables near fan is poor or not.
respective cooling "Clap, clap" sound is generated when an
fans error occurs.
(2-2-5) Check installation condition of mechanical parts
Check the installation Remove the CU and PU PCB, and inspect
conditions of the the installation conditions of the partition
partition plate under plate by visual inspection.
the CU and PU
PCBs.
7. Troubleshooting
Check work Action to be taken at NG
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.
Replace an
appropriate
mechanical part as
required, or adjust
or repair.
Correct the wiring
conditions of the
cable.
If they are not
hooked on the
normal specified
positions, correct
them.
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