Abnormal Sound Is Heard - Oki C301 Maintenance Manual

Oki Data CONFIDENTIAL
Check item
(2-1-3) Connection-line check
Operator panel Check the same as (1-1).
The printer does not operate unless the
connection
operator panel is detected and operated.

(2-2) Abnormal sound is heard

Check item
(2-2-1) Motor step losing check (driver problem)
Each motor's By using the self-diagnostic mode, check
operation each motor for proper operation by whether
the motor is loaded or not. The motor beeps
when improper.
Motor cords Check the wiring for each motor as follows:
Visually check for, or check for with a tester,
short circuiting.
Remove the motor cord from the board side,
and the resistance between each pin on the
side of the cord and the frame ground.
(2-2-2) Motor step losing check (consumable load problem)
Operating conditions Check if operations of the respective motors are
of the respective normal or not by using the self-diagnostic mode.
motors Check if any load exists or not.
"Buzzer" sound when an error occurs.
44951501TH Rev.2
Check operation Actions for NG
results
Follow (1-1).
Check operation Actions for NG
results
Replace the
CU/PU board.
Replace the
motor cord.
Re-assemble
parts properly.
Replace the
corresponding
consumable
item.
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 operation
(2-2-3) Gear tooth disengagement check (consumable load problem)
Operating conditions Check if operations of the respective motors are
of the respective normal or not by using the self-diagnostic mode.
motors Check if any 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 normal
item positions in which gears of the consumable
items engage accurately or not.
(2-2-4) Cord routing check
Check the Remove the CU and PU board, and inspect the
installation installation conditions of the partition plate by
conditions of the visual inspection.
partition plate under
the CU and PU
boards.
7. TROUBLESHOOTING
Actions for NG
results
Replace the
corresponding
consumable
item.
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
If they are not
hooked on the
normal specified
positions,
correct them.
7-27