Toshiba DP4500 Service Handbook page 102

[E36] Paper fed from the PFP lower cassette not reaching the PFP upper feed sensor
Open the PFP side cover. Is there any paper in front of the PFP upper feed sensor?
YES
Remove the paper.
NO
Is the PFP upper feed sensor working?
(Perform the input check in the test mode: 03-[FAX]OFF/[2]/[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 upper feed sensor.
7. Replace the PFP board.
8. Replace the LGC board.
YES
Is the PFP transport clutch working? (Perform the output check in the test mode: 03-225)
NO
1. Check if the connector of the PFP transport 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 open-circuited.
6. Replace the PFP transport clutch.
7. Replace the PFP board.
8. Replace the LGC board.
YES
Check the PFP transport roller. Replace it if it is worn out.
December 2000 © TOSHIBA TEC
disconnected.
5 - 7 DP4500/3500 TROUBLESHOOTING