Abnormal Sound - Oki MC561 Maintenance Manual

Oki Data CONFIDENTIAL

(2-2) Abnormal sound

Check item
(2-2-1) Checking for loss of synchronization of motor (driver failure)
Operation of each motor Check whether each motor
operates properly using the self-
diagnosis mode.
Check by detection of a load.
Noise that sounds like "pooh" is
made when there is a fault.
Condition of each motor cable Check the wiring of each motor.
Check for a short circuit by visual
check and using a tester.
Disconnect the motor cable
from the PCB and check the
resistance between the FG and
each pin of the disconnected
cable.
(2-2-2) Checking for loss of synchronization of motor (load by consumables)
Operation of each motor Check whether each motor
operates properly using the self-
diagnosis mode.
Check by detection of a load.
Noise that sounds like "pooh" is
made when there is a fault.
(2-2-3) Check for gear jumping (load by consumables)
Operation of each motor Check whether each motor
operates properly using the self-
diagnosis mode.
Check by detection of a load.
Noise that sounds like "batz batz"
is made when there is a fault.
Position of consumables Check visually whether each
consumable gear is in place and
they engage with one another.
44473001TH Rev.1
Checking Action in case of fail
Replace CU/PU PCB
and SU PCB.
Replace the motor
cable.
Correct the wiring.
Replace the
consumable(s).
When testing with a new
consumable part, use
the fuse keep mode on
the system maintenance
menu.
Replace the
consumable(s).
When testing with a new
consumable part, use
the fuse keep mode on
the system maintenance
menu.
Replace or repair
mechanical part(s).
Check item
(2-2-4) Checking cable wiring
Cable wiring around cooling Check whether a cable touches
fans the blades of a fan as the cable
is not properly laid.
When it does, noise that sounds
like "clack clack" is made.
7. TROUBLESHOOTING PROCEDURES
Checking Action in case of fail
Lay the cable properly.
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