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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c TROUBLESHOOTING
5 - 25
5
[E714] Feed signal reception jam
[E721] Jam not reaching the read sensor
Is the empty sensor working? (Perform the input check: 03-[FAX]ON/[7]/[B])
È
YES Æ Clean the rollers or replace them.
NO
Is the original excessively curled or folded?
È
YES Æ Flatten and set it again.
NO
Are the original length sensor and registration sensor working?
(Perform the input check: 03-[FAX]ON/[8]/[E], [7]/[H])
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NO Æ 1) Check if the lever of empty sensor is working normally.
2) Check if the connector of the empty sensor is disconnected.
3) Check if the connector CN75 on the RADF board is disconnected.
4) Check if the connector pins are disconnected or the harnesses are open
circuited.
5) Check if the conductor pattern on the RADF board is short circuited or open
circuited.
6) Replace the empty sensor.
7) Replace the RADF board.
YES
Replace the RADF board.
Are the registration roller and read roller stained?
È
YES Æ Clean the rollers.
NO
Is the read sensor working? (Perform the input check: 03-[FAX]ON/[7]/[G])
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NO Æ 1) Check if the connector of the read sensor are disconnected.
2) Check if the connector CN75 on the RADF 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 RADF board is short circuited or open
circuited.
5) Replace the read sensor.
6) Replace the RADF board.
YES
Replace the RADF board.