3NG
1-4-6
1-4-4 Mechanical problems
If the part causing the problem was not supplied, use the unit including the part for replacement.
Problem
Causes/check procedures
Corrective measures
(1)
No paper feed.
Check if the surfaces of the following
rollers are dirty with paper powder.
SD forwarding pulley
SD paper feed pulley
SD separation pulley
Clean with isopropyl alcohol.
Check if the following rollers is
deformed.
SD forwarding pulley
SD paper feed pulley
SD separation pulley
Check visually and replace any deformed
(see page 1-5-2,1-5-5).
Defective PF paper feed clutch installa-
tion.
Check visually and remedy if necessary.
(2)
Skewed paper feed.
PF paper width guide in a cassette
installed incorrectly.
Check the SD paper width guide visually
and remedy or replace if necessary.
(3)
Multiple sheets of
paper are fed.
Check if the paper is excessively curled. Change the paper.
Paper is loaded incorrectly.
Load the paper correctly.
Check if the SD separation pulley is
worn.
Replace the SD separation pulley if it is
worn (see page 1-5-5).
(4)
Paper jams.
Check if the paper is excessively curled. Change the paper.
Check if the contact between the SD
paper conveying roller and SD paper
conveying pulleys is correct.
Check visually and remedy if necessary.
(5)
Abnormal noise is
heard.
Check if the rollers, pulleys and gears
operate smoothly.
Grease the bushes and gears.
Check if the following clutches are
installed correctly.
SD paper feed clutch
SD paper conveying clutch
Check visually and remedy if necessary.
Summary of Contents for Utax PF 770
Page 1: ...Service Manual 3DSHU HHGHU 3 5HY Date 0 20 1 60 ...
Page 2: ...Service Manual 3DSHU HHGHU 3 5HY Date 0 20 1 60 ...
Page 4: ...Revision history Revision Date Replaced pages Remarks 1 6 April 2011 CONTENTS 2 4 1 to 2 4 3 ...
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Page 16: ...3NG 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Paper path ...
Page 17: ...3NG 1 1 4 This page is intentionally left blank ...
Page 69: ...3NG 1 5 12 This page is intentionally left blank ...
Page 77: ...3NG 2 3 4 This page is intentionally left blank ...