Oki Microline 520 Service Handbook page 128

3.2.07 Control Board (FJIM)
1. Perform these procedures: 3.2.01, and 3.2.06.
2. Remove the two screws (1).
3. Release the control board (2) from the bracket (3).
4. Tilt the board to access the connectors.
5. Detach connectors CN6 - operator panel (4), CN7- carriage cable (5), CN3 - power
supply (6), and CN5 - line feed motor (7).
6. Remove the board.
NOTE:
Installation
The bottom sensor lever must be positioned in the SNS3 sensor (8).
The rear sensor lever must be positioned in the SNS1 sensor (9).
The cut sheet/continuous sensor lever must be positioned below the BASW sensor
(10). The lever should contact the sensor only when the change lever is in the top
feed (middle) setting.
If the lever is not correctly positioned, the ALARM lamp will light and the unit will
not automatically load paper or receive data.
The IC: EEPROM is soldered in on the board.
P/N 55072401 PCB: FJIM (w/o ROM)
P/N 55938301 IC: EEPROM BR93CC46A
Maintenance
RSPL
RSPL
3 - 16 Microline 520/521 Service Handbook
Both B.2.03
Both B.2.03
P/N 59257803