3MH
1-4-4
(4)
A paper jam in the
paper feed section is
indicated during
copying (misfeed in
vertical paper con-
veying section 1).
Jam code 15
Broken registration switch,
cassette feed switch 1 or 2
actuator.
Check visually and replace switch.
Defective switch.
Run maintenance item U031 and turn switch on and off manually.
Replace the switch if indication of the corresponding switch is not
light.
Registration switch, cassette feed switch 1, 2
Check if the paper feed
clutch, cassette paper feed
clutch 1, 2 or 3 malfunc-
tions.
Run maintenance item U032 and select the clutch to be turned on
and off. Check the status and remedy if necessary.
Electrical problem with the
paper feed clutch, cassette
paper feed clutch 1, 2 or 3.
Check (see page 1-4-9).
Defective feed pulleys or
feed rollers.
Check visually and replace.
(5)
A paper jam in the
paper feed section is
indicated during
copying (misfeed in
vertical paper con-
veying section 2).
Jam code 16
Broken cassette feed
switch 1 or 2 actuator.
Check visually and replace switch.
Defective switch.
Run maintenance item U031 and turn switch on and off manually.
Replace the switch if indication of the corresponding switch is not
light.
Cassette feed switch 1, 2
Check if the paper feed
clutch, cassette paper feed
clutch 1 or 2 malfunctions.
Run maintenance item U032 and select the clutch to be turned on
and off. Check the status and remedy if necessary.
Electrical problem with the
paper feed clutch, cassette
paper feed clutch 1 or 2.
Check (see page 1-4-9).
Defective feed pulleys or
feed rollers.
Check visually and replace.
(6)
A paper jam in the
paper feed section is
indicated during
copying (multiple
sheets in first paper
feeder).
Jam code 22
Deformed guides along the
paper conveying path.
Check visually and replace.
Broken registration switch
actuator.
Check visually and replace switch.
Defective registration
switch.
Run maintenance item U031 and turn registration switch on and
off manually. Replace the switch if indication of the corresponding
switch is not light.
Check if the cassette paper
feed clutch 1 malfunctions.
Run maintenance item U032 and select the cassette paper feed
clutch 1 to be turned on and off. Check the status and remedy if
necessary.
Electrical problem with the
cassette paper feed clutch
1.
Check (see page 1-4-9).
Check if the right and left
registration rollers contact
each other.
Check visually and replace.
Problem
Causes/check procedures
Corrective measures
Summary of Contents for DF-420
Page 3: ...Revision history Revision Date Replaced pages Remarks ...
Page 4: ...This page is intentionally left blank ...
Page 10: ...This page is intentionally left blank ...
Page 11: ...First Edition DP 420 ...
Page 17: ...3MX 1 1 4 This page is intentionally left blank ...
Page 21: ...3MX 1 2 4 This page is intentionally left blank ...
Page 65: ...3MX 1 5 10 This page is intentionally left blank ...
Page 69: ...3MX 2 1 4 This page is intentionally left blank ...
Page 82: ...First Edition PF 420 ...
Page 87: ...3MH 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Machine cross section Paper path ...
Page 88: ...3MH 1 1 4 This page is intentionally left blank ...
Page 94: ...3MH 1 2 6 This page is intentionally left blank ...
Page 128: ...3MH 1 4 12 This page is intentionally left blank ...
Page 136: ...3MH 1 5 8 This page is intentionally left blank ...
Page 142: ...3MH 2 2 4 This page is intentionally left blank ...
Page 146: ...3MH 2 3 4 This page is intentionally left blank ...
Page 149: ...First Edition DF 420 ...
Page 151: ...3MJ This page is intentionally left blank ...
Page 155: ...3MJ 1 1 4 This page is intentionally left blank ...
Page 159: ...3MJ 1 2 4 3 Remove the tape from the process table Figure 1 2 4 Tape Process table ...
Page 175: ...3MJ 1 5 4 This page is intentionally left blank ...
Page 181: ...3MJ 2 1 6 This page is intentionally left blank ...
Page 185: ...3MJ 2 2 4 This page is intentionally left blank ...
Page 192: ...First Edition JS 420 ...
Page 194: ...3MK This page is intentionally left blank ...
Page 196: ...3MK 1 1 2 1 1 2 Parts names Figure 1 1 1 1 2 1 Job separator tray 2 LED ...
Page 197: ...3MK 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Machine cross section Paper path ...
Page 198: ...3MK 1 1 4 This page is intentionally left blank ...
Page 212: ...3MK 2 2 2 This page is intentionally left blank ...
Page 215: ...First Edition FAX System R ...
Page 217: ...3MZ This page is intentionally left blank ...
Page 227: ...3MZ 1 2 4 This page is intentionally left blank ...
Page 285: ...3MZ 1 6 2 This page is intentionally left blank ...
Page 287: ...3MZ 2 1 2 This page is intentionally left blank ...
Page 293: ...3MZ 2 2 6 This page is intentionally left blank ...
Page 295: ...3MZ 2 3 2 This page is intentionally left blank ...
Page 296: ......