User Guide

Troubleshooting the stacker and the stapler/stacker
When troubleshooting problems are related to the stacker or stapler/stacker, you might find that it is
difficult to distinguish whether the malfunction relates to the stacker, the stapler/stacker, or the
printer. The troubleshooting procedures in this section assume that the stacker or stapler/stacker is
installed on a printer that is working normally. Always correct any printer errors before attempting to
troubleshoot the stacker or stapler/stacker.
Stacker and stapler/stacker errors fall into four groups:
■ Jam errors
■ Paper-transport errors
■ Malfunction errors
■ Component errors
Jam and transport errors result when media does not move successfully from the printer through to
the stacker or stapler/stacker. Malfunction errors cause the stacker or stapler/stacker to stop or to
operate incorrectly. Component errors that are the result of an internal component failure and
generate errors messages that appear on the control-panel display. For more information about
control-panel messages, see
Alphabetical printer messages and Numerical printer messages.
Initial checks
■ Before troubleshooting the stacker or stapler/stacker, verify that any printer errors have been
corrected. The printer must be operating normally before you can troubleshoot the stacker or
stapler/stacker. See
Alphabetical printer messages and Numerical printer messages.
■ Inspect the stacker or stapler/stacker connectors on the unit and on the printer. Verify that the
connectors are not damaged, and that the stacker or stapler/stacker is installed correctly. If the
stacker or stapler/stacker was installed while the printer power was on, turn the power off and
then on again.
■ Verify that the environmental specifications are met. The specifications for the stacker and
stapler/stacker are the same as for the printer. See
Operating environment.
■ Verify that the media being used meets HP specifications. See
Supported media weights and
sizes and Paper and print media.
■ If the stacker or stapler/stacker was recently moved from a cold environment (for example, a
warehouse) into a warm room, condensation within the device might be causing the problem. If
condensation occurs, either wipe the parts with a dry, lint-free cloth, or leave the stacker or
stapler/stacker turned on for 10 to 20 minutes.
402 7 Troubleshooting