Instruction manual

The Procedures
79
Clean the shuttle frame assembly and hammer bank cover assembly
if you find debris. Replace the hammer bank cover assembly if you
find any damage to the ribbon mask or hammer bank cover.
5. Power up the printer. Run a shuttle test.
Replace the shuttle frame assembly if it is noisy or rattles.
SHUTTLE JAM Message
1. 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.
Set the forms thickness lever to match the thickness of paper and
provide satisfactory print quality, but not too tightly.
2. Check the platen gap.
Adjust the platen gap.
3. Inspect the ribbon mask for bends or deformation that snag and interfere
with shuttle movement. Make sure the hammer bank cover assembly is
correctly installed on its mounting pegs.
Reinstall the hammer bank cover assembly. Replace a damaged or
deformed hammer bank cover assembly.
4. Run a print test.
If the message appears, power off the printer.
5. Remove the shuttle cover. Remove the paper path or the pedestal top
cover. Inspect the shuttle mechanism for obstructions. Check that all
cables are attached at the shuttle and the CMX controller board. Make
sure the MPU cable is not pinched. (Refer to the Interconnection
Diagrams in Appendix A.)
Remove obstructions and 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 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).
7. Run a print test.
If the message appears, replace the MPU and the MPU cable
assembly.
8. Run a print test.
If the message appears, replace the CMX controller board. Record
the message and return it with defective CMX board.
9. Run a print test.
If the message appears, replace the power supply board.
10. Run a print test.