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Appendix J Stacker Operation
Stacker Troubleshooting
The power stacker augments the paper feed system of the printer. The most
frequently occurring problems in the paper feed system are paper jams.
Because of the electromechanical nature of the system, other problems that
can occur are worn or poor electrical connections and cabling, worn or
defective feed motors, worn or damaged mechanical components, or
incorrect installation of the stacker assembly. Table 10 shows some of the
problems that may occur with the power stacker and the page where you can
find the troubleshooting procedure.
Table 10. Power Stacker Troubleshooting
Symptom Origin of Symptom Explanation Solution
Printer does not detect
presence of power
stacker
Reported by customer. Various causes possible. page 116
017 STACKER JAM
CHECK STACKER
Message on control
panel LCD.
Paper is bunching above the
elevator or the paper motion
detector is not working
properly.
page 68
018 STACKER FULL
CHECK STACKER
Message on control
panel LCD.
Status message: the power
paper stacker is full.
page 69
019 STACKER FAULT
CHECK STACKER
Message on control
panel LCD.
This message is triggered
when the elevator cannot
reach the top or bottom limit
switch before timing out.
page 70
Stacker “chatters” at
upper or lower limit
Reported by customer. Various causes possible. page 117
Stacker does not stack
properly
Reported by customer. Various causes possible. page 118
Stacker elevator does
not move
Reported by customer. Various causes possible. page 118
Stacker elevator moves
by itself
Reported by customer. Various causes possible. page 118
Stacker not operating Reported by customer. Same symptom as “Printer
does not detect presence of
power stacker”
page 116
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