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e-STUDIO281c/351c/451c TROUBLESHOOTING June 2005 © TOSHIBA TEC
5 - 16
[EB50] Paper remaining on the transport path due to multiple feeding
When the paper is fed from any of the upper drawer, bypass feed unit or ADU:
Open the jam access cover. Is there any paper in front of the registration sensor?
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YES Æ Remove the paper.
NO
When the paper is fed from the upper drawer:
Is the upper drawer feed sensor working? (Perform the input check: 03-[FAX]ON/[3]/[H])
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NO Æ 1) Check if the connector of the upper drawer feed sensor is disconnected.
2) Check if the connector CN338 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 upper drawer feed sensor.
6) Replace the LGC board.
YES
When the paper is fed from the bypass feed unit:
Is the bypass feed sensor working? (Perform the input check: 03-[FAX]ON/[9]/[D])
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NO Æ 1) Check if the connector of the bypass feed sensor is disconnected.
2) Check if the connector CN340 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 bypass feed sensor.
6) Replace the LGC board.
YES
When the paper is fed from the ADU:
Is the ADU exit sensor working? (Perform the input check: 03-[FAX]OFF/[8]/[G])
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NO Æ 1) Check if the connector of the ADU exit sensor is disconnected.
2) Check if either of the connectors CN211 or CN213 on the ADU board is dis-
connected.
3) Check if the connector CN340 on the LGC 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 ADU board and LGC board are short
circuited or open circuited.
6) Replace the ADU exit sensor.
7) Replace the ADU board.
8) Replace the LGC board.
YES
Is the registration sensor working? (Perform the input check: 03-[FAX]ON/[9]/[E])
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NO Æ 1) Check if the connector of the registration sensor is disconnected.
2) Check if the connector CN338 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 registration sensor.
6) Replace the LGC board.
YES
Check the rollers. Replace them if they are worn out.