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TROUBLESHOOTING
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[E491] OCT cover opened during printing
Is the OCT cover open?
È YES Æ Remove the paper if there is any, then close the cover.
NO
Is the OCT cover switch working? (Perform the input check in the test mode: 03-[FAX]OFF/[8]/
[H])
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È
NO Æ 1) Check if the connector of the OCT cover switch is disconnected.
2) Check if either of the connectors CN260 or CN261 on the OCT board is dis-
connected.
3) Check if the connector CN302 on the OCT board is disconnected.
4) Check if the connector pins are disconnected or the harnesses are open
circuited.
5) Check if the conductor patterns on the OCT board and LGC board are short
circuited or open circuited.
6) Replace the OCT cover switch.
7) Replace the OCT board.
8) Replace the LGC board.
YES
1) Replace the OCT board.
2) Replace the LGC board.
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