44346001TH Rev.1
150 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
(1-3) Error message display related to operator panel
Check item
Check operation
Actions for NG
results
(1-3-1) Error message
Error message
Check detail in the error messages list.
Follow
instructions.
(1-4) RAM CHECK or INITIALIZING persists
Check item
Check operation
Actions for NG
results
(1-4-1) Operator panel display freezes
Operator panel
display
RAM CHECK or INITIALIZING persists.
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
Check operation
Actions for NG
results
(2-1-1) Power supply periphery check
AC power supplied
to printer
Check the AC power supply voltage.
Supply AC
power.
5V and 24V power
supplied to CU/PU
board
Check the power supply by using the CU/PU
board POWER connector 10.
Pins 7, 8 and 9: 24V
Pins 1, 2 and 3: 5V
Pins 4, 5 and 6: 0VL
Pins 10, 11 and 12: 0VP.
Replace the low
voltage power
supply.
(2-1-2) Connection-line check
Operator panel
connection
Check the same as (1-1).
The printer does not operate unless the
operator panel is detected and operated.
Follow (1-1).
(2-2) Abnormal sound is heard
Check item
Check operation
Actions for NG
results
(2-2-1) Motor step losing check (driver problem)
Each motor’s
operation
By using the self-diagnostic mode, check
each motor for proper operation by whether
the motor is loaded or not. The motor beeps
when improper.
Replace the
CU/PU board.
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.
Replace the
motor cord.
Re-assemble
parts properly.