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ERROR CODE AND TROUBLESHOOTING
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[E491] OCT cover opened during printing
Classification Error content
Cover open jam Offset tray cover open jam
Proce
dure
Check item Result Measure
Next
Step
1
Is the OCT cover open? Yes Remove the paper if there is any, then close
the cover
No
2
2
Is the OCT cover switch
working?
(Perform the input check
in the test mode: 03-
[FAX]ON/[3]/[E])
Yes
3
No • Check if the connector of the OCT cover
switch is disconnected?
• Check if either of the connectors CN260 or
CN261 on the OCT board is disconnected.
• Check if the connector CN302 on the OCT
board is disconnected.
• Check if the connector pins are
disconnected and the harnesses are open
circuited.
• Check if the conductor patterns on the OCT
board and LGC board are short circuited or
open circuited.
• Replace the OCT cover switch.
• Replace the OCT board.
• Replace the LGC board.
3
Replacing board • Replace the OCT board.
• Replace the LGC board.
Parts to be replaced Remark
OCT cover switch
OCT board.
LGC board
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