Oki ML390 Service Manual page 87

Rev C
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.
· Perform this procedure: 3.2.01
· Turn the locking post (1) 90 degrees clockwise to unlock it.
· Lift the locking claw (2) and pull the control board (3) away from the chassis.
· Detach the cable from the connector (4).
· Tilt the control board 45 degrees and remove it.
NOTE:
When installing, verify that correct contacts are made at these points.
Guides (A and B)
Linefeed Motor Interconnect Module (C)
Sensor Lever (D)
Printhead Cable Connector (E)
The sensor lever must be positioned in the paper end sensor. If the lever is not correctly positioned, the
ALARM lamp will light and the unit will not automatically load paper or receive data.
P/N 55923901 IC: CU EEPROM 391 390+ RSPL
P/N 55938101 IC: CU EEPROM ER59256 390 391+ RSPL
P/N 50704301 Clamp: PCB All RSPL A B C
P/N 55045403 PCB: SKRA-3 w/o ROM All RSPL A B C
P/N 50605501 Lock: Board Screw All RSPL A B C
Service Guide ML390/391
Chapter 3 Maintenance & Disassembly
, 3.2.04 , 3.2.05 .
B.2.02 , B.2.03
B.2.02
B.2.02 , B.2.03
B.2.02
B.2.02
, B.2.03
, B.2.03
Control Board
, B.2.03
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