Mechanical Problems - Olivetti PF-720 Service Manual

1-4-4

Mechanical problems

Problem
(1)
No primary paper feed.
(2)
Skewed paper feed.
(3)
Multiple sheets of paper
are fed at one time.
(4)
Paper jams.
(5)
Abnormal noise is heard.
Y112020-4
Causes/check procedures
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.
Check if the paper feed pulley or separation
pulley is deformed.
Check if the forwarding pulley is deformed.
Electrical problem with the following electro-
magnetic clutches: PF paper feed clutches 1/
2 and PF paper conveying clutch.
Paper width guide in the cassette installed
incorrectly.
Deformed paper width guide in the cassette.
Check if the separation pulley is deformed.
Check if the paper is curled.
Check if the paper is excessively curled.
Deformed guides along the paper conveying
path.
Check if the pulleys, rollers and gears operate
smoothly.
Check if the PF paper feed clutches 1/2 and
the PF paper conveying clutch are installed
correctly.
Clean with isopropyl alcohol.
Replace (see page 1-5-2).
Replace (see page 1-5-2).
See page 1-4-7.
Check the paper width guide visually and
remedy or replace if necessary.
Check the paper width guide visually and
remedy or replace if it is deformed.
Replace the separation pulley if it is worn
(see page 1-5-2).
Change the paper.
Change the paper.
Check visually and remedy or replace any
deformed guides.
Grease the bushings and gears.
Remedy.
Service Manual
Corrective measures
3LM
1-4-9