Oki ML390 Service Manual page 166

Microline 390/391-Plus
CAUTION:
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 ON
Blinking ON
Blinking ON
Blinking ON
15 17 20 PR
OP
Courie Roma Helv
r n ette
ON
ON
ON
Orator Error Action
Conditi
on
Internal Replace the
RAM main control
Error board.
Serial 1.Reinstall
I/F the serial
Connec interface.
tion
Error
2.Replace
the serial i/f.
3.Replace
the main
control
board.
ON Serial 1.Replace
I/F the serial i/f.
Time
Out
Error
2.Replace
the main
control
board.
Progra 1.Replace
m ROM the ROM.
Error