HP LaserJet 4300 Series Spezifikationen PDF herunterladen (Seite 318)

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298 Troubleshooting Q2431-90912

Persistent jams

If jams occur repeatedly, use the information in this section to diagnose the root cause of the

problem. The tables in this section list possible causes and recommended solutions for jams in

each area of the paper path. The information is listed in the order in which you conduct the

investigation. In general, items at the beginning of the list are relatively minor repairs. Items at

the end of the list are more significant repairs.

Basic troubleshooting for persistent jams

The basic troubleshooting process for jams consists of the following:

1. Gather data.

2. Identify the cause of the problem.

3. Fix the problem.

Data collection

To troubleshoot jams, gather the following information:

● the exact error code that appears on the control panel

● the location of the leading edge of all of the media that is in the paper path

● the location of the media when the jam occurs: in the paper path or if paper is stuck

in the input tray

● the timing of the jam: at power-up or while paper is moving

● the location if any damage occurs on the media and the location in the paper path

where the damaged media stops

● the relationship to a particular tray

● the relationship to duplex printing

● the relationship to the type of paper

● the use of any non-HP supplies (non-HP supplies are known to cause jams)

● paper-handling conditions, including correct storage, overloading trays, damaging

media during loading, fanning of the paper ream, or use of paper that has already

been fed through this printer, another printer, or a copier.

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