Olivetti d-Copia 6500MF Plus Service Manual page 378

(9) Electrical parts that could cause paper jam at the duplex part
Timing of detection
Corrective Action
Duplex motor 1 (DUM1)
Duplex motor 2 (DUM2)
Duplex sensor 1 (DUS1)
Duplex sensor 2 (DUS2)
Checking
procedure at the
Corrective action at the occurrence of
occurrence of
J43XX
J43XX
1 Items for Initial Checks
2
Duplex sensor 1 (DUS1): Conduct
connectivity check, mounting location
check, operation check (U031)
3
Duplex motor 1 (DUM1): Operation
check (U030)
4
Check how the conveying unit and the
main unit drawer are connected and, if
they are normal, replace the feed circuit
PWB1.
5
Feed PWB 1(FPWB1): replace
6
Engine PWB: Replace
7
Relay PWB (RYPWB): Replace
Service Manual
Jam code
J430x,J431x,J440x,J441x
Related parts
Engine PWB (EPWB)
Relay PWB (RYPWB)
* : In paper conveying unit
Relay PWB (RYPWB)
Feed PWB 1 (FPWB1) J440X
1-4-50
On/Off control signal output connector
(terminal), point of checking connection
see page 1-4-26
Feed PWB 1 YC23-1
Feed PWB 1 YC23-6 to 9
2N8/2N7
Y116520-