Utax AK 740, Service Manual

Page: 56 / 207

3N0/3NK/3PD/3PG
1-4-11
(2) Items and corrective actions relating to the device that will cause paper jam
Static Check if the location is
susceptible to build static
discharge at the conveying guide
during printing.
Re-assemble and re-wire the static discharge sheet at
the ejection unit or the metal guide at the tranfer unit so
that they are properly grounded.
Jam types Check description Corrective measures
BR conveying sensor
1/2 unreachable/stay
jam (J49XX)
Eject sensor non
arrival jam (J50XX)
Eject sensor stay jam
(J51XX)
DF paper entry error
JAM (J600X)
1. Check contamination of
the rollers of the bridge
conveying unit.
Clean or replace the rollers.
2. Check the mounted
position of the bridge
conveying unit.
Insert the bridge conveying unit.
Check whether the bridge conveying unit is locking
certainly.
DF conveying sensor
unreachable jam
(J610X)
DF conveying sensor
retention jam (J611X)
1. Check it the main unit
and the DF are
vertically flush with
each other.
Perform the height adjustment by referring to the
installation instructions.
2. Check if paper is
caught at its leading
edge to crumple.
If a welding protrusion on the coveying side causes
paper to be trapped, try replacing the punch unit.
Check items Check description Corrective measures
a b
12
21
a a
13
21
b
b