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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c TROUBLESHOOTING
5 - 15
5
[E520] Stop jam in the ADU
Open the ADU. Is there any paper in front of the ADU exit sensor?
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YES Æ Remove the paper.
NO
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 ADU clutch working? (Perform the output check: 03-222)
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NO Æ 1) Check if the connector of the ADU clutch 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 ADU clutch.
6) Replace the LGC board.
YES
Check the rollers in the ADU. Replace them if they are worn out.