EXP Computer C4077-90960 - Manual (Page 274)

General Paper Path Troubleshooting
Paper jams occur in the printer when paper does not either reach or clear a
photosensor along the printer’s paper path in a specific amount of time. If a
paper jam occurs, a "13.xx PAPER JAM" message is displayed on the printer’s
Control Panel. The following lists general questions you should ask and
topics you should explore prior to troubleshooting:
General Paper Path Troubleshooting Questions
Problem Action
What is the frequency of the
paper jams (e.g. continuous,
one jam per 100 pages, one
jam per 1000 pages, etc. . .)? Verify with customer. Print or Show Error Log to determine paper
jam history. See the Display and Error Log Sections of this Chapter
and evaluate error log.
Do paper jams only occur
when the paper is fed from a
particular paper input source
(e.g., Tray 1, Tray 2, Tray 3,
Tray 4 or Envelope Feeder)? See Verification Section of this chapter and use Paper Path Test to
isolate problem.
Do jams only occur when
paper is output to a specific
output bin (e.g., face-down
output bin, face-up bin,
mailbox bin, duplex
operation, stapler)? See Verification Section of this chapter and use Paper Path Test to
isolate problem. Note: Multi-Bin Mailbox and Stapler are not
supported with the HP LaserJet 5Si HM (C3124A).
Do paper jams occur with a
specific type of media? Try known good media. See the HP LaserJet Printer Family Paper
Specifications Guide. Note that the guide is bundled with the
Service Manual.
Where does the leading
edge of the first sheet of
paper in the printer’s paper
path stop when a jam
occurs? Are any sheets of
paper physically damaged or
torn? Attempt to duplicate. See Verification Section of this chapter and
use Paper Path Test. Inspect the paper path and all paper path
mechanical assemblies prior to the leading paper jam.
Is the customer loading the
paper trays correctly? Observe customer loading paper. Do not fan paper. Refer to proper
paper handling procedures in the Paper Specification Guide.
Is the customer overfilling
the paper trays? Ensure paper is NOT over the maximum fill marks in the paper
trays. Observe customer loading paper in trays.
Are the paper tray guides
set correctly? Ensure Tray 2 and 3 left-side paper fence is set correctly at both
the front and rear of the tray; and that the front fence is locked into
the correct position. For Tray 4 ensure all adjustments are set
correctly: front, back, and side at the top and bottom of the tray.
Does the printer need
cleaning? Inspect paper path and paper path rollers. Refer to cleaning
procedures in Chapter 4.
When was the User
Maintenance performed on
the printer? Determine from PCL Configuration Page the number of pages
since the last maintenance (refer to Figure 7-5). The User
Maintenance Kit should be installed every 350,000 images
(250,000 images with HP LaserJet 5Si Heavy Media printers) by
the customer.
7
Troubleshooting
Troubleshooting 7-37