Paper Misfeeds (Monochrome Machine) - Kyocera PF-750 Service Manual

(4) Paper misfeeds (monochrome machine)

Problem
(1)
A paper jam in the
paper feed section is
indicated during
copying (no paper
feed from cassette
3).
Jam code 12
(2)
A paper jam in the
paper feed section is
indicated during
copying (jam in 3000-
sheet paper feeder
horizontal paper con-
veying section).
Jam code 15
(3)
A paper jam in the
paper feed section is
indicated during
copying (jam in 3000-
sheet paper feeder
horizontal paper con-
veying section).
Jam code 16
Causes/check procedures
Paper is extremely curled.
Broken feed switch 3 actua-
tor.
Defective feed switch 3.
Check if the clutch malfunc-
tions.
Electrical problem with
clutch.
Paper is extremely curled.
Check if the paper side
guides are deformed.
Defective paper path sen-
sor 3.
Check if paper feeder paper
feed clutch 2 malfunctions.
Electrical problem with
paper feeder paper feed
clutch 2.
Paper is extremely curled.
Check if the paper side
guides are deformed.
Defective paper path sen-
sor 2.
Check if paper feeder paper
feed clutch 1 malfunctions.
Electrical problem with
paper feeder paper feed
clutch 1.
Corrective measures
Change the paper.
Check visually and replace switch.
Run maintenance item U031 and turn feed switch 3 on and off
manually. Replace feed switch 3 if indication of the corresponding
switch on the touch panel is not displayed in reverse.
Run maintenance item U247 and select following clutch on the
touch panel to be turned on and off. Check the status and remedy
if necessary.
Paper feeder paper feed clutch 1/2, paper feeder paper conveying
clutch
Check (see page 1-4-6).
Change the paper.
Check visually and replace.
With 5 V DC present at CN6-12 on the paper feeder main PWB,
check if CN6-11 on the paper feeder main PWB remains low when
paper path sensor 3 is turned on and off. If it does, replace paper
path sensor 3.
Run maintenance item U247 and select paper feeder paper feed
clutch 2 on the touch panel to be turned on and off. Check the sta-
tus and remedy if necessary.
Check (see page 1-4-6).
Change the paper.
Check visually and replace.
With 5 V DC present at CN6-9 on the paper feeder main PWB,
check if CN6-8 on the paper feeder main PWB remains low when
paper path sensor 2 is turned on and off. If it does, replace paper
path sensor 2.
Run maintenance item U247 and select paper feeder paper feed
clutch 1 on the touch panel to be turned on and off. Check the sta-
tus and remedy if necessary.
Check (see page 1-4-6).
5H0-4
1-4-5