Printronix P5000 Maintenance Manual page 108

Chapter 3
Troubleshooting Other Symptoms
Symptom
Reverse paper feed: platen
does not open
TOF is lost repeatedly
108
Table 3. General Symptom List
1. Raise the forms thickness lever and check that the platen
opens. If the platen opens with difficulty, inspect for and
remove jams or obstructions.
2. Check the condition and tension of the platen open belt.
Adjust the platen open belt. Replace the belt if it is
damaged.
3. Check the platen gap. Adjust the platen gap.
4. Power off the printer. Remove the paper guide assembly.
Disconnect connector P106 from the controller board.
Check the resistance of connector P106/PLAT M. (Refer
to the Main Wire Harness Test Tables in Appendix A.)
Replace the platen open motor if it fails the resistance test.
5. Power on the printer. Press PAPER ADVANCE and VIEW
several times and check that paper moves in both
directions. Replace the controller board if the platen does
not open during paper reverse.
1. Check that the customer is setting the forms length to
match the size paper used. Set the forms length to match
the length of paper being used.
2. If the customer is using multi-part forms, check that the
forms thickness lever is not being set too tightly. Set the
forms thickness lever to match the thickness of paper and
provide satisfactory print quality, but not too tightly.
3. Check the condition and tension of the paper feed timing
belt. Adjust the paper feed timing belt. Replace the belt if it
is damaged.
4. Check the dynamic paper tension.
5. Remove the paper path or pedestal top cover. Make sure
connector P107/PAPR M is fully seated in connector J107
on the controller board. Connect P107/PAPR M to J107 on
the controller board.
6. Power on the printer. Load paper and set TOF. Press
PAPER ADVANCE and VIEW several times and check
that paper returns to TOF. Replace the paper feed motor if
paper does not return to TOF.
7. Power on the printer. Press PAPER ADVANCE and VIEW
several times and check that paper returns to TOF.
Replace the controller board if paper does not return to
TOF.
Solution