Copying (Jam In Duplex Stock Section); Large Paper Deck (42 Ppm: Optional/52 Ppm: Standard); Gear - Kyocera Mita KM-4230 Service Manual

2A3/4

• Large paper deck (42 ppm: optional/52 ppm: standard)

Problem
(1) Broken deck paper conveying
A paper jam motor gear.
in the large
paper deck is
Paper is extremely curled.
indicated
during
Defective paper path sensor 1.
copying
(paper failing
to reach
PPS0 in large
paper deck
horizontal
paper path).
Electrical problem with paper
feed clutch 1.
The paper side guides are
deformed.
Mechanical problem with paper
feed clutch 1.
Defective interface PCB.
Defective deck main PCB.
3-6-30
Causes/check procedures 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 CN4-9
on the deck main PCB when
paper path sensor 1 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 1 or the interface
PCB is defective. Check the
interface PCB and, if it is okay,
replace paper path sensor 1.
Check (see page 3-6-96).
Remedy or replace.
Check the installation condition.
Check for continuity across
CN1-9 & CN7-2 and CN1-4 &
CN5-6 on the interface PCB. If
none, replace the interface
PCB.
Check if the voltage at CN4-9
on the deck main PCB changes
in the pattern 2 V DC/0 V DC
(pulse) /0 V DC. If it does,
replace the deck main PCB.