Toshiba DP4500 Service Handbook page 110

[E16] PFP lower cassette misfeeding (paper not reaching the PFP lower feed sensor)
Open the PFP side cover. Is there any paper in front of the PFP lower feed sensor?
YES
Remove the paper.
NO
Is the PFP lower feed sensor working?
(Perform the input check in the test mode: 03-[FAX]OFF/[4]/[D])
NO
1. Check if the connector of the PFP upper feed sensor is disconnected.
2. Check if either of the connectors CN241 or CN243 on the PFP board is disconnected.
3. Check if the connector J312 on the LGC board is disconnected.
4. Check if the connector pins are disconnected and the harnesses are open-circuited.
5. Check if the conductor patterns on the PFP board and LGC board are short- or open-circuited.
6. Replace the PFP lower feed sensor.
7. Replace the PFP board.
8. Replace the LGC board.
YES
Is the PFP lower cassette feed clutch working?
(Perform the output check in the test mode: 03-228)
NO
1. Check if the connector of the PFP lower cassette feed clutch is disconnected.
2. Check if any of the connectors CN241, CN242 and CN244 on the PFP board is
3. Check if the connector J312 on the LGC board is disconnected.
4. Check if the connector pins are disconnected and the harnesses are open-circuited.
5. Check if the conductor patterns on the PFP board and LGC board are short- or
6. Replace the PFP lower cassette feed clutch.
7. Replace the PFP board.
8. Replace the LGC board.
YES
Check the PFP lower cassette feed roller and separation roller. Replace them if they are worn out.
December 2000 © TOSHIBA TEC
disconnected.
open-circuited.
5 - 15 DP4500/3500 TROUBLESHOOTING