Instruction manual

82
Chapter 3 Troubleshooting Procedures
Replace any cable that is damaged or fails continuity test. Reconnect
all stacker cables to the CMX controller board, stacker, and stacker
control panel.
Stacker elevator moves by itself
1. Power off the printer. Inspect all stacker LEDs for dust, chaff, or dirt. (See
Figure 81 through Figure 83, page 338 through page 342.)
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 81 through Figure 83, page 338 through page 342.)
STACKER FAULT Message
NOTE: This message is triggered when the elevator cannot reach either the
top or bottom position switch before timing out.
1. Power on the printer. Operate the power stacker. (Refer to the
Operator’s
Guide.
Check for obstructions preventing elevator movement.
Remove obstructions.
2. Operate the power stacker. 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.
3. Check for misaligned stacker rails
Adjust the stacker rails if they are not vertical and parallel.
4. Check the stacker limit switches. (See page 83.)
If the limit switches are OK, go to the next step.
5. Disable the power stacker unit under the Printer Control menu. (Refer to
the
Setup Guide.)
If the message occurs, replace the CMX controller board.
6. Power off the printer. Remove the paper path. Disconnect stacker cables
from the CMX controller board, stacker assembly, and the stacker control
panel (see Figure 59, page 313). 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 CMX controller board, stacker, and stacker
control panel.