Mechanical Problems - Kyocera FS-720 Service Manual

1-5-5 Mechanical problems

Problem
(1)
No primary paper feed.
(2)
No secondary paper
feed.
(3)
Skewed paper feed.
(4)
Multiple sheets of paper
are fed at one time.
(5)
Paper jams.
(6)
Toner drops on the paper
conveying path.
(7)
Abnormal noise is heard.
Causes/check procedures
Check if the surfaces of the feed roller is dirty
with paper powder.
Check if the paper feed roller is deformed.
Defective feed clutch installation.
Check if the surfaces of the upper and lower
registration rollers are dirty with paper pow-
der.
Defective registration clutch installation.
Paper width guide in a cassette installed
incorrectly.
Check if the separator pad is worn.
Check if the paper is curled.
Check if the paper is excessively curled.
Check if the contact between the upper and
lower registration rollers is correct.
Check if the upper and lower fuser roller is
extremely dirty or deformed.
Check if the contact between the FD roller
and FD pulley is correct.
Check if the drum unit or developer unit is
extremely dirty.
Check if the pulleys, rollers and gears operate
smoothly.
Check if the following electromagnetic
clutches are installed correctly: Feed clutch
and registration clutch.
Corrective measures
Clean with isopropyl alcohol.
Check visually and replace any deformed
paper feed roller. See page 1-6-4.
Check visually and remedy if necessary.
Clean with isopropyl alcohol.
Check visually and remedy if necessary.
Check the paper width guide visually and
correct or replace if necessary.
Replace the separator pad if it is worn.
Change the paper.
Change the paper.
Check visually and remedy if necessary.
Clean or replace the upper and lower fuser
roller.
Check visually and remedy if necessary.
Clean the drum unit or developer unit.
Grease the bearings and gears.
Check visually and remedy if necessary.
2GL/2FV/2FW
1-5-23