Error Message Display Related To Operator Panel; Ram Check Or Initializing Persists; No Operations Start - Oki C301 Maintenance Manual

Oki Data CONFIDENTIAL

(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
44951501TH Rev.2
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
board POWER connector 10.
supplied to CU/PU
Pins 7, 8 and 9: 24V
board
Pins 1, 2 and 3: 5V
Pins 4, 5 and 6: 0VL
Pins 10, 11 and 12: 0VP.
(2-1-2) Confirmation of the power switch LED
Power Switch LED Confirm whether the LED is off.
If the LED blinks rapidly, the number of
blinking times in a cycleshows an error. The
timing of blinking rapidly is shown in the
below figure
Rapid blinking of the LED
N times blinking
ON
OFF
One time blinking (2.5Hz)
ON times 250mS
OFF times 150mS
A cycle
7. TROUBLESHOOTING
Check operation Actions for NG
Supply AC
power.
Replace the low
voltage power
supply.
Replace either
of the power
supply unit, the
CU board, SW-
Assy (Front),
the cables
connected to the
CU board and
power supply
unit or the cables
connected to
the CU board
and SW-assy.In
1.0 sec lighting
...
case of 2, 4, 8 or
(No blinking)
10 times of LED
blinking rapidly:
Replace either of
the power supply
unit, the CU
board, the cables
connected to the
power supply
unit and the CU
board.
In case of 3, 6 or
9 times of LED
blinking rapidly:
Replace the CU
board.
results
7-26