3LM
1-4-9
1-4-4 Mechanical problems
Problem
Causes/check procedures
Corrective measures
(1)
No primary paper feed.
Check if the surfaces of the following rollers
and pulleys are dirty with paper powder:
forwarding pulley, paper feed pulley, separa-
tion pulley, feed roller and feed pulley.
Clean with isopropyl alcohol.
Check if the paper feed pulley or separation
pulley is deformed.
Replace (see page 1-5-2).
Check if the forwarding pulley is deformed.
Replace (see page 1-5-2).
Electrical problem with the following electro-
magnetic clutches: PF paper feed clutches 1/
2 and PF paper conveying clutch.
See page 1-4-7.
(2)
Skewed paper feed.
Paper width guide in the cassette installed
incorrectly.
Check the paper width guide visually and
remedy or replace if necessary.
Deformed paper width guide in the cassette.
Check the paper width guide visually and
remedy or replace if it is deformed.
(3)
Multiple sheets of paper
are fed at one time.
Check if the separation pulley is deformed.
Replace the separation pulley if it is worn
(see page 1-5-2).
Check if the paper is curled.
Change the paper.
(4)
Paper jams.
Check if the paper is excessively curled.
Change the paper.
Deformed guides along the paper conveying
path.
Check visually and remedy or replace any
deformed guides.
(5)
Abnormal noise is heard.
Check if the pulleys, rollers and gears operate
smoothly.
Grease the bushings and gears.
Check if the PF paper feed clutches 1/2 and
the PF paper conveying clutch are installed
correctly.
Remedy.
Y1120
2
0-
4
Service Manual
Summary of Contents for PF-720
Page 1: ...PF 720 Option Copier SERVICE MANUAL Code Y112020 4...
Page 3: ...This page is intentionally left blank...
Page 9: ...This page is intentionally left blank...
Page 11: ...3LM This page is intentionally left blank...
Page 15: ...3LM 1 1 4 This page is intentionally left blank Service Manual Y112020 4...
Page 21: ...3LM 1 2 6 This page is intentionally left blank Service Manual Y112020 4...
Page 39: ...3LM 1 4 10 This page is intentionally left blank Service Manual Y112020 4...
Page 53: ...3LM 2 2 2 This page is intentionally left blank Service Manual Y112020 4...
Page 59: ...3LM 2 4 2 This page is intentionally left blank Service Manual Y112020 4...
Page 61: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 04 2010 1ST EDITION 61 Y112020 4...