Oki ES9160, Maintenance Manual

Page: 619 / 1087

8
© 2012 OKI DATA CORPORATION All rights reserved ES9160 MFP / ES9170 MFP
ERROR CODE AND TROUBLESHOOTING
8 - 139
8.3.17 RADF related service call
No service call for the RADF.
8.3.18 Laser optical unit related service call
[CA10] Polygonal motor is abnormal
[CA20] H-Sync detection error
Classification Error content
Laser optical unit related service
call Polygonal motor is abnormal
Proce
dure
Check item Result Measure
Next
Step
1 Is the polygonal motor
rotating? Yes 1. Check if the conductor pattern on the LGC
board is short circuited or open circuited.
2. Replace the LGC board.
3. Replace the laser optical unit.
No 1. Check if the connector of the harness is
disconnected between LGC board (CN314)
and the laser optical unit. Reconnect it
securely if so.
Even if the connector is not apparently
disconnected, it may be connected loosely.
Therefore check carefully that it is secure.
2. Check if the harness is open circuited and
the connector pin is disconnected.
3. Check if the conductor pattern on the LGC
board is short circuited or open circuited.
4. Replace the laser optical unit.
5. Replace the LGC board.
Parts to be replaced Remark
LGC board
Laser optical unit
Proce
dure
Check item Result Measure
Next
Step
1 Are the harness open
circuited and the
connectors disconnected
between the LGC board
(CN313) and the laser
optical unit? Yes 1. Even if the connector is not apparently
disconnected, it may be connected loosely.
Therefore check carefully that it is secure.
No 1. Replace the LGC board.
2. Replace the laser optical unit
Classification Error content
Laser optical unit related service
call
Parts to be replaced Remark
LGC board
Laser optical unit