Mechanical Problems - Kyocera FS-9120DN Service Manual

FS-9120DN/9520DN

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 pa-
per conveying path.
1-5-42
Causes/check procedures
Check if the surfaces of the following rollers
or pulleys are dirty with paper powder: up-
per/lower forwarding pulleys, upper/lower
paper feed pulleys, upper/lower separation
pulleys, feed rollers, registration rollers, MP
forwarding pulleys, MP paper feed pulleys
and MP separation pulleys.
Check if the upper/lower forwarding pulleys,
upper/lower paper feed pulleys or upper/
lower separation pulleys is deformed.
Electrical problem with the following electro-
magnetic clutches: upper/lower paper feed
clutches, feed clutches 1/2/3, MP paper feed
clutch and MP feed clutch.
Check if the surfaces of the right and left
registration rollers are dirty with paper pow-
der.
Electrical problem with the registration
clutch.
Width guide in a cassette installed incor-
rectly.
Deformed width guide in a cassette.
Check if a pressure spring along the paper
conveying path is deformed or out of place.
Check if the upper or lower separation pulley
is worn.
Check if the paper is curled.
Check if the paper is excessively curled.
Deformed guides along the paper conveying
path.
Check if the contact between the right and
left registration rollers is correct.
Check if the contact between the feed roller
and feed pulley is correct.
Check if the press roller is extremely dirty or
deformed.
Check if the contact between the heat roller
and its separation claws is correct.
Check if the contact between the eject roller
and pulley is correct.
The feedshift solenoid malfunctions.
Check if the developing unit is extremely
dirty.
Corrective measures
Clean with isopropyl alcohol.
Check visually and replace any deformed
pulleys (see page 1-6-2).
See pages 1-5-37 and 38.
Clean with isopropyl alcohol.
See page 1-5-38.
Check the width guide visually and correct
or replace if necessary.
Repair or replace if necessary .
Repair or replace.
Replace the upper or lower separation pul-
ley if it is worn (see page 1-6-2).
Change the paper.
Change the paper.
Repair or replace if necessary.
Check visually and remedy if necessary.
Check visually and remedy if necessary.
Clean or replace the press roller.
Repair if any springs are off the separation
claws.
Check visually and remedy if necessary.
See page 1-5-38.
Clean the developing unit.