Service manual

The printer feeds multiple sheets or jams frequently from the main input tray or priority input slot.
Cause
Solution
The paper guides are not adjusted correctly or the paper is not
far enough forward.
Slide the guides against the sides of the stack in the main input
tray or the priority input slot to center the paper. Make sure that
the guides are not adjusted too tightly.
The stack is not neat or not aligned well on all sides. Remove the media, and then align stack and replace it.
The main input tray is overfilled. Remove some of the sheets. The main input tray can hold up
to 250 sheets of 75 g/m
2
(20-lb) bond-weight paper (less for
heavier paper) or from 20 to 30 envelopes.
The priority input slot is overfilled. Remove media or feed single sheets. The priority input slot is
designed for optimal feeding of single sheets, especially when
heavier media is used. It can hold up to ten sheets of 75 g/m
2
(20-lb) bond-weight paper (one sheet of heavier paper) or one
envelope.
The paper was poorly cut by the manufacturer and is sticking
together.
“Break” the ream of paper by curving it into an upside-down u-
shape; this can effectively decrease multifeeds. Also try turning
the paper around to feed the opposite end first, or use a
different type of paper.
The paper does not meet HP specifications for print media. Make sure that the media meets the specifications detailed in
the HP LaserJet Printer Family Print Media Guide.
The output capacity was exceeded in the output bin.
Do not allow more than 125 sheets of 75 g/m
2
(20-lb) bond-
weight paper (less for heavier paper) to fill the paper output
bin.
The pickup roller is dirty. Clean the pickup roller.
The pickup roller is damaged. Replace the pickup roller.
The separation pad is damaged. Replace the separation pad.
A sensor is not operating correctly. The chances of a sensor failing are very small. However,
debris around the sensor arms can cause them to register a
jam. Three sensors are in the printer: top-of-page sensor,
paper-width sensor, and delivery sensor. Check them to
ensure that the sensor arms can move freely. On the rare
occasion of a failed sensor, replace the printer.
Table 6-7 Solving paper-feed problems (continued)
ENWW Solving paper-feed problems 123