Toshiba DP4500 Service Handbook page 115

[E43] ADU opened during printing
Is the ADU open?
YES
NO
Is the ADU opening/closing switch working? (Perform the input check in the test mode: 03-[FAX]OFF/
[1]/[F])
NO
YES
1. Replace the ADU board.
2. Replace the LGC board.
[E44] Side cover opened during printing
Is the side cover open?
YES
NO
Is the side door switch working?
(Perform the input check in the test mode: 03-[FAX]ON/[2]/[G])
NO
YES
Replace the LGC board.
DP4500/3500 TROUBLESHOOTING
Remove the paper if there is any, then shut the ADU.
1. Check if the connector of the ADU opening/closing switch is disconnected.
2. Check if either of the connectors CN211 or CN217 on the ADU board is disconnected.
3. Check if the connector J316 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 ADU board and LGC board are short- or
open-circuited.
6. Replace the ADU opening/closing switch.
7. Replace the ADU board.
8. Replace the LGC board.
Remove the paper if there is any, then shut the cover.
1. Check if the connector of the side door switch 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 side door switch.
6. Replace the LGC board.
5 - 20 December 2000 © TOSHIBA TEC