3MH
1-4-5
(7)
A paper jam in the
paper feed section is
indicated during
copying (multiple
sheets in second
paper feeder).
Jam code 23
Deformed guides along the
paper conveying path.
Check visually and replace.
Broken cassette feed
switch 1 actuator.
Check visually and replace switch.
Defective cassette feed
switch 1.
Run maintenance item U031 and turn cassette feed switch 1 on
and off manually. Replace the switch if indication of the corre-
sponding switch is not light.
Check if the cassette paper
feed clutch 2 malfunctions.
Run maintenance item U032 and select the cassette paper feed
clutch 2 to be turned on and off. Check the status and remedy if
necessary.
Electrical problem with the
cassette paper feed clutch
2.
Check (see page 1-4-9).
(8)
A paper jam in the
paper feed section is
indicated during
copying (multiple
sheets in third paper
feeder).
Jam code 24
Deformed guides along the
paper conveying path.
Check visually and replace.
Broken cassette feed
switch 2 actuator.
Check visually and replace switch.
Defective cassette feed
switch 2.
Run maintenance item U031 and turn cassette feed switch 2 on
and off manually. Replace the switch if indication of the corre-
sponding switch is not light.
Check if the cassette paper
feed clutch 3 malfunctions.
Run maintenance item U032 and select the cassette paper feed
clutch 3 to be turned on and off. Check the status and remedy if
necessary.
Electrical problem with the
cassette paper feed clutch
3.
Check (see page 1-4-9).
Problem
Causes/check procedures
Corrective measures
Содержание DF-420
Страница 1: ...SERVICE MANUAL Published in May 2009 3MZSM060 First Edition DP 420 PF 420 DF 420 JS 420 FAX System R ...
Страница 3: ...Revision history Revision Date Replaced pages Remarks ...
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Страница 11: ...First Edition DP 420 ...
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Страница 84: ...3MH 2 4 Appendixes List of maintenance parts 2 4 1 Periodic maintenance procedures 2 4 1 Wiring diagram 2 4 2 ...
Страница 87: ...3MH 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Machine cross section Paper path ...
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Страница 196: ...3MK 1 1 2 1 1 2 Parts names Figure 1 1 1 1 2 1 Job separator tray 2 LED ...
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Страница 291: ...3MZ 2 2 4 2 2 2 NCU PWB Figure 2 2 2 NCU PWB silk screen diagram MCN1 MCN2 MCN3 4 3 4 3 4 3 CN2 CN1 1 2 21 22 2 1 ...
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