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TROUBLESHOOTING
5 - 21
5
5.1.3 Cover open jam
[E400] Jam access cover opened during printing
[E410] Front cover opened during printing
Is the jam access cover open?
È YES Æ Remove the paper if there is any, then close the cover.
NO
Is the voltage of 24V being supplied from the power supply unit?
(Perform the input check in the test mode: 03-[FAX] ON/[1]/[C])
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È
NO Æ 1) Check if the connector for 24V power supply is disconnected.
2) Check if the connector CN301 on the LGC board is disconnected.
3) Check if the connector pins are disconnected or the harnesses are open
circuited.
4) Check if the conductor pattern on the LGC board is short circuited or open
circuited.
5) Replace the LGC board.
YES
Replace the LGC board.
Is the front cover open?
È YES Æ Close the cover.
NO
Is the voltage of 24V being supplied from the power supply unit?
(Perform the input check in the test mode: 03-[FAX] ON/[1]/[C])
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È
NO Æ 1) Check if the connector for 24V power supply is disconnected.
2) Check if the connector CN301 on the LGC board is disconnected.
3) Check if the connector pins are disconnected or the harnesses are open
circuited.
4) Check if the conductor pattern on the LGC board is short circuited or open
circuited.
5) Replace the LGC board.
YES
Is the front cover opening/closing switch working?
(Perform the input check in the test mode: 03-[FAX]ON/[2]/[D])
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È
NO Æ 1) Check if the connector of the front cover opening/closing switch is discon-
nected.
2) Check if the connector CN317 on the LGC board is disconnected.
3) Check if the connector pins are disconnected or the harnesses are open
circuited.
4) Check if the conductor pattern on the LGC board is short circuited or open
circuited.
5) Replace the front cover opening/closing switch. Replace the LGC board.
YES
Replace the LGC board.
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