Utax AK 740, Service Manual

Page: 66 / 207

3N0/3NK/3PD/3PG
1-4-21
(6) Electrical parts that could cause paper jam at the DF eject tray part
Timing of detection
Corrective Action
Jam code
J640x,J641x
Related parts
DF eject motor (DFEM) DF main PWB(DFMPWB)
DF tray motor (DFTM)
DF middle sensor (DFMES)
DF tray upper sensor 1 and 2 (DFTUSS 1,2)
Checking
procedure at the
occurrence of
J64XX
Corrective action at the occurrence of
J64XX On/Off control signal output connector
(terminal), point of checking connection
1 Items for Initial Checks see page 1-4-7
2
DF middle sensor (DFMES):Conduct
connectivity check, mounting location
check, operation check (U241)
DF main PWB YC20-6
3
DF tray upper sensor 1 and 2
(DFTUSS1, 2) : Conduct connectivity
check, mounting location check,
operation check (U241)
DF main PWB YC21-
19(DFTUSS1),YC13-3(DFTUSS2)
4
DF eject motor (DFEM): Operational
check (U240)
DF main PWB YC12-5 to 8
5
DF tray motor (DFTM) : Operation check
(U240)
DF main PWB YC19-4
6
DF main PWB(DFMPWB) : Replace