Mechanical Problems - Kyocera TASKalfa 420i Service Manual

2KR/2KS
1-4-5

Mechanical problems

Problem
(1)
No primary paper feed.
(2)
No secondary paper
feed.
(3)
Skewed paper feed.
(4)
The scanner does not
travel.
(5)
Multiple sheets of paper
are fed at one time.
1-4-60
Causes/check procedures
Check if the surfaces of the following rollers or
pulleys are dirty with paper powder:
Forwarding pulley, paper feed pulley, separa-
tion pulley, feed roller, registration roller, MP
forwarding pulley, MP paper feed pulley and
MP separation pulley
Check if the forwarding pulley, paper feed pul-
ley or separation pulley is deformed.
Check if the MP forwarding pulley, MP paper
feed pulley or MP separation pulley is
deformed.
Electrical problem with the following clutches:
Paper feed clutch 1/2, feed clutch 1/2/3, MP
paper feed clutch and MP feed clutch
Check if the surfaces of the right and left reg-
istration rollers are dirty with paper powder.
Electrical problem with the registration clutch.
Width guide in a cassette installed incorrectly. Check the width guide visually and correct
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 scanner wire is loose.
The scanner motor malfunctions.
Paper is extremely curled.
Check if the separation pulley is worn.
Check if the MP separation pulley is worn.
Corrective measures
Clean with isopropyl alcohol.
Replace the pulley if it is deformed (see
page 1-5-3).
Replace the pulley if it is deformed (see
page 1-5-5).
See page 1-4-57.
Clean with isopropyl alcohol.
See page 1-4-57.
or replace if necessary.
Check visually and replace any deformed
guide.
Repair or replace.
Reinstall the scanner wire (see page 1-5-
16).
See page 1-4-55.
Replace the paper.
Replace the separation pulley if it is worn
(see page 1-5-3).
Replace the MP separation pulley if it is
worn (see page 1-5-5).