Printronix P5000 Maintenance Manual page 98

Chapter 3
Troubleshooting Other Symptoms
Symptom
Stacker does not stack
properly
Stacker elevator does not
move
Stacker elevator moves by
itself
98
Table 3. General Symptom List
1. Check for and remove obstructions preventing elevator
movement.
2. Check for misaligned stacker rails. Adjust the stacker rails
if they are not vertical and parallel.
3. Power on the printer. Operate the power stacker. (Refer to
the Operator's Guide.) While the stacker is operating,
check that:
a) all motors are operating
b) the paddles are rotating
c) the elevator moves smoothly and without obstruction
d) the timing belts are undamaged and the belt pulleys are
not slipping
e) the extension springs are attached and undamaged (not
bent or stretched)
f) the drive rollers are not damaged
g) the constant force springs are tightly mounted and
undamaged
Tighten pulley setscrews and/or replace damaged
components as necessary.
4. Check the stacker limit switches. (See page 99.) If the limit
switches are OK, go to the next step.
5. Check the stacker motors. (See page 100.) If the stacker
motors are OK, go to the next step.
6. Remove the paper path. Disconnect stacker cables from
the controller board, stacker assembly, and the stacker
control panel (see Figure 69, page 344). Check cables for
cuts, breaks, or damaged pins. Check continuity of cables.
(See Appendix A.) Replace any cable that is damaged or
fails continuity test. Reconnect all stacker cables to the
controller board, stacker, and stacker control panel.
See "Stacker does not stack properly"
1. Power off the printer. Inspect all stacker LEDs for dust,
chaff, or dirt. (See Figure 95 through Figure 97, page 368
through page 372.) Clean the stacker LEDs and the sight
tubes in the LED mounts.
2. Power on the printer. If the stacker elevator moves by
itself, replace the stacker LEDs. (See Figure 95 through
Figure 97, page 368 through page 372.)
Solution