IBM Infoprint 6500-v05 Maintenance Manual page 51

Operator Panel Message
019 STACKER FAULT
CHECK STACKER
Table 3. Message List
Explanation
Two situations can trigger this
message:
1. The stacker elevator is
obstructed while attempting to
move up or down. The message
will always occur if the user
presses the ELEVATOR UP key
on the stacker operator panel to
move the elevator and the
elevator is blocked so that it
cannot move to the top of its
travel.
2. Controller hardware tells
firmware that an over-current
condition exists. This will only
occur if the controller board or the
stacker motors are bad.
Corrective Action
1. Open the cabinet rear door and check for obstructions preventing
elevator movement. Remove any obstructions.
2. Power on the printer. Operate the power stacker and 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. Adjust the stacker rails if they are not vertical and parallel.
4. Check the stacker limit switches. (See page 191.) If the limit
switches are OK, go to the next step.
5. Power off and unplug the printer. Remove the paper guide
assembly. Disconnect stacker cables from the controller board,
stacker assembly, and the stacker operator panel. Check cables
for cuts, breaks, or damaged pins. Check continuity of cables.
Replace any cable that is damaged or fails continuity test.
6. Plug in the printer and power it on. Disable the power stacker unit
under the Printer Control menu. (Refer to the User's Manual.) If
the problem reappears, the controller board or microcode is
suspect. Do the following:
7. Save the printer configuration values. (Refer to the User's
Manual .)
8. Clear NVRAM (page 237).
9. Download and install the latest code from IBM First (page 231).
10. Power on the printer in download mode and load flash memory
(page 238).
Display Messages
51