Toshiba DP4500 Service Handbook page 103

[EB5] Paper left on the transport path due to multiple feeding
In case an paper is fed from the upper cassette, bypass feed unit or ADU,
Open the jam access cover. Is there any paper in front of the registration sensor?
YES
NO
Is the registration sensor working? (Perform the input check in the test mode: 03-[FAX]ON/[2]/[A])
NO
YES
Check the rollers. Replace them if they are worn out.
In case an paper is fed from the lower cassette, PFP or LCF:
Open the jam access cover. Is there any paper in front of the upper feed sensor?
YES
NO
Is the upper feed sensor working? (Perform the input check in the test mode: 03-[FAX]OFF/[6]/[E])
NO
YES
Check the rollers. Replace them if they are worn out.
DP4500/3500 TROUBLESHOOTING
Remove the paper.
1. Check if the connector of the registration sensor is disconnected.
2. Check if the connector J313 on the LGC board is disconnected.
3. Check if the connector pins are disconnected and the harnesses are open-circuited.
4. Check if the conductor pattern on the LGC board is short- or open-circuited.
5. Replace the registration sensor.
6. Replace the LGC board.
Remove the paper.
1. Check if the connector of the upper feed sensor is disconnected.
2. Check if the connector J313 on the LGC board is disconnected.
3. Check if the connector pins are disconnected and the harnesses are open-circuited.
4. Check if the conductor pattern on the LGC board is short- or open-circuited.
5. Replace the upper feed sensor.
6. Replace the LGC board.
5 - 8 December 2000 © TOSHIBA TEC