C4170-90959
Paper Handling Problems
109
Locating and Correcting Jams
See the “Paper Pick and Feed System” (page 89) for an account of the operation of the
paper feed system. After reading that section, use the diagrams below to locate and
troubleshoot the possible causes of the paper jam.
• “Printer Paper Path, Sensors, and Signals” (page 148)
• “Optional Tray 3 Paper Path, Sensors, and Signal” (page 149)
• “General Printer Component Locations” (page 150)
The process of correcting paper jams may be simplified by categorizing jams by frequency,
location, and type of jam. See “Paper Jams” (page 110).
Table 6-6. General Paper Jam 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 the customer. See “Troubleshooting with Control
Panel Messages” (page 96) and “Status Log Messages”
(page 113) and evaluate the Status Log. Perform a Continuous
Self Test (See Chapter 4).
Do paper jams occur with a
specific type of media?
Try using known good media. Refer to “Media Troubleshooting”
(page 134).
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 damaged or torn?
Attempt to duplicate the problem. Inspect the paper path and all
paper path mechanical assemblies located before the leading
paper jam.
Use the “Continuous Self-Test” (page 49) to aid in locating paper
jams.
Is the customer loading the
paper trays correctly?
Observe the customer loading paper. Break the ream, do not fan
the paper. Refer to proper paper handling procedures in “Media
Troubleshooting” (page 134).
Is the customer overfilling
the paper trays?
Ensure that the paper is NOT over the maximum fill marks in the
paper trays. Observe the customer loading paper in the trays.
Are the paper tray guides
set correctly?
Ensure all front and rear Tray 2 and optional Tray 3 guides are set
correctly.
Does the printer need
cleaning?
Inspect the paper path and paper path rollers. Refer to cleaning
procedures in “Cleaning the Printer” (page 61).
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