Oki ML390 Service Manual page 164

OFF BLINK
BLINK OFF
Fault Alarm Conditions
Microline 390/391
CAUTION:
Check the contacts between the power interconnect module, the control board, and the power supply
board (Rev A and B units ONLY). Clean the contacts if dirty. If contacts are bent or broken, replace the
module. Proper inspection and cleaning of the power interconnect module contacts can eliminate a false
diagnosis of a failed control board or power supply board.
Check the contacts and connections of the control board. If good contact is not made at all connections
and ground points, false diagnosis will occur.
ALARM 10 12
Lamp
Status
Blinking O
N
Blinking O
N
N/A Operator
Alarm
N/A Fault Alarm
15 17 20 L
Q
O
N
O
N
Print
Suppress
Refer to
the Fault
Alarm
Conditions
Table
Microline
390/391-Pl
us
UTI RE CAR
L S D
The printer has
received a PRINT
SUPPRESS code
from the
computer.
Refer to the Fault
Alarm Conditions
Table Microline
390/391-Plus
Error Action
Condition
MPU Replace the
Internal main control
ROM board.
Error
Program 1.Replace
ROM the ROM.
Error