Oki ML390 Service Manual page 167

Blinking ON
Blinking ON
Blinking
Blinking
Blinking
Blinking
O
N
O
N
O
N
O
N
ON
ON
ON
ON
2.Replace
the main
control
board.
ON Cartridg 1.Reinstall
e CG the font card.
Error
2.Replace
the font card.
3.Replace
the main
control
board.
Reside Replace the
nt CG main control
Error board.
1.Reinsert
Externa the RAM
l RAM card.
Error
2.Replace
the RAM
card.
3.Replace
the main
control
board.
ON RAM 1.Reinsert
Card the RAM
Error card.
2.Replace
the RAM
card.
3.Replace
the main
control
board.
Head Refer to RAP
Homing 02.
Error
Spacing Refer to RAP
Error 02.