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2-20 Service Manual
4227-X00
Paper Feed Service Check
Note: If the problem is frequent jams or paper creases, verify that
the paper is neither very thick nor very thin. If necessary refer the
customer to the User’s Guide for specifications of acceptable
papers.
FRU / Symptom Action
1 Auto Sheet
Feeder
If the Auto Sheet Feeder is installed, remove it.
Enter the Paper Handling Options Menu and
set “ASF” to off. Verify that the machine works
correctly without the ASF installed.
If the printer fails only with the Auto Sheet
Feeder installed, go to the
“Auto Sheet
Feeder (ASF) Service Check” on page
2-12
.
2 Tractor 2 If the Tractor 2 option is installed, remove it.
Verify that the machine works correctly without
Tractor 2 installed.
If the printer fails only with Tractor 2 installed,
go to the
“Tractor 2 Service Check” on
page 2-31
.
3 Paper Feed Motor If there is no paper motion, disconnect the
paper feed motor connector CN10 from the
main logic board.
Check the resistance of pins:
CN-1 and 6, 2 and 5, 3 and 6, and 4 and 5.
All resistances should be 5.8
± 0.5 ohms. No
pin should have continuity to ground.