Error Message Display Related To Operator Panel; Ram Check Or Initializing Persists; Problem Operation After Printer Is Turned On; No Operations Start - Oki C310dn Maintenance Manual

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(1-3) Error message display related to operator panel

Check item
(1-3-1) Error message
Error message Check detail in the error messages list.

(1-4) RAM CHECK or INITIALIZING persists

Check item
(1-4-1) Operator panel display freezes
Operator panel RAM CHECK or INITIALIZING persists.
display
44346001TH Rev.1
Check operation Actions for NG
results
Follow
instructions.
Actions for NG
Check operation
results
Remove an
option RAM
and SD card
and perform
checking.
Replace the
CU/PU board to
address a NG
result.

7.5.2.(2) Problem operation after printer is turned on

(2-1) No operations start

Check item
(2-1-1) Power supply periphery check
AC power supplied Check the AC power supply voltage.
to printer
5V and 24V power Check the power supply by using the CU/PU
supplied to CU/PU board POWER connector 10.
board Pins 7, 8 and 9: 24V
Pins 1, 2 and 3: 5V
Pins 4, 5 and 6: 0VL
Pins 10, 11 and 12: 0VP.
(2-1-2) Connection-line check
Operator panel Check the same as (1-1).
connection The printer does not operate unless the
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.
7. TROUBLESHOOTING
Check operation Actions for NG
results
Supply AC
power.
Replace the low
voltage power
supply.
Follow (1-1).
Check operation Actions for NG
results
Replace the
CU/PU board.
Replace the
motor cord.
Re-assemble
parts properly.
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