Printronix P5000 Maintenance Manual page 80

Chapter 3
Troubleshooting Display Messages
Message
SHUTTLE JAM
80
Table 2. Message List
Explanation
The shuttle is not moving or
is moving at the wrong
speed. Check the forms
thickness lever: if it is set too
tightly, it can slow the shuttle
enough to trigger the fault
message.
Solution
1. Set the forms thickness lever to
match the thickness of paper, but
not too tightly.
2. Check/adjust the platen gap.
3. Inspect the ribbon mask for
deformation that snags and
interferes with shuttle movement.
Correctly install the hammer bank
cover assembly or replace a
deformed cover assembly.
4. Run a print test. If the message
appears, power off the printer.
5. Remove the shuttle cover and
paper path or the pedestal top
cover. Inspect the shuttle
mechanism for obstructions.
Check that all cables are
attached at the shuttle and the
controller board. Make sure the
MPU cable is not pinched. (Refer
to the Interconnection Diagrams
in Appendix A.) Reseat all cables.
Check the resistance of the MPU
at connector P107. (Refer to the
Main Wire Harness Test Tables
in Appendix A.) Replace the MPU
if it fails the test.
6. Run a print test. If the message
appears, replace the power
supply board.
7. Run a shuttle test and observe
shuttle movement. If the shuttle
oscillates too slowly, adjust the
gap between the MPU assembly
and the flywheel to 0.010 ± .001
inch (0.254 ± 0.025 mm). Torque
the 7/16 inch MPU clamp screw
to 18 ± 1 inch-pounds (2.03 ±
0.11 N•m).
8. Run a print test. If the message
appears, replace the MPU and
the MPU cable assembly.