Horizontal Paper Path) - Kyocera KM-4230 Service Manual

2A3/4
Problem
(3)
A paper jam
in the large
paper deck is
indicated
during
copying
(paper failing
to reach
PPS2 in large
paper deck
horizontal
paper path).
3-6-32
Causes/check procedures
Broken deck paper conveying
motor gear.
Paper is extremely curled.
Defective paper path sensor 3.
Electrical problem with paper
feed clutch 2.
Mechanical problem with paper
feed clutch 2.
The paper side guides are
deformed.
Defective interface PCB.
Defective deck main PCB.
Corrective measures
Check visually and replace the
deck paper conveying motor or
its gear if necessary.
Change the paper.
With a 5/0 V DC pulse signal
output at CN1-1 on the deck
main PCB, check if a 2/0 V DC
pulse signal is output at CN1-11
on the deck main PCB when
paper path sensor 3 is turned
on by holding a sheet of paper
level about 10 to 20 mm below
the bottom of the paper
conveying base. If not, paper
path sensor 3 or the interface
PCB is defective. Check the
interface PCB and, if it is okay,
replace paper path sensor 3.
Check (see page 3-6-97).
Check the installation condition.
Remedy or replace.
Check for continuity across
CN1-5 & CN5-4 and CN2-11 &
CN4-2 on the interface PCB. If
none, replace interface the
PCB.
Check if the voltages at CN1-11
on the deck main PCB change
in the pattern 2 V DC/0 V DC
(pulse) /0 V DC. If it does,
replace the deck main PCB.