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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
Classification
Laser optical unit related service
call
Proce
Check item
dure
1
Is the polygonal motor
rotating?
Parts to be replaced
LGC board
Laser optical unit
[CA20] H-Sync detection error
Proce
Check item
dure
1
Are the harness open
circuited and the
connectors disconnected
between the LGC board
(CN313) and the laser
optical unit?
Classification
Laser optical unit related service
call
Parts to be replaced
LGC board
Laser optical unit
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Polygonal motor is abnormal
Result
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.
Remark
Result
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
Remark
8 - 139
Error content
Measure
Measure
Error content
ES9160 MFP / ES9170 MFP
ERROR CODE AND TROUBLESHOOTING
Next
Step
8
Next
Step
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