Oki ML520 Service Manual page 103
Oki dot matrix printers service guide ml520, ml521
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Also See for ML520:
- Quick start (4 pages) ,
- Specifications (2 pages) ,
- User manual (226 pages)
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Page: 76
Service Guide ML520/521
Chapter 3 Maintenance & Disassembly
3.2.07 Control Board (FJIM)
3.2.01 , and 3.2.06 .
1. Perform these procedures:
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.
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Troubleshooting
