♦ Worn rollers or separation pads can cause multifeeds. Check the condition of the pickup
rollers and separation pads. Bent separation tabs (on the front corners of the input trays)
can cause misfeeds and multifeeds. Replace the tray if necessary.
♦ Defective paper tray switches can cause jams by communicating the wrong paper size
to the formatter.
♦ Defective paper sensors along the paper path might signal a false jam.
♦ Scraps of media left in the paper path can cause intermittent jams. Always check that
the paper path is clear when cleaning the printer and when clearing jams. Also, remove
the fuser and carefully check it for jam debris.
Table 7-8. Jams in Tray 1
Causes for jams in Tray 1
Cause
Solution
Pickup roller is dirty, worn, or damaged. Clean the pickup roller. If it is still dirty after
cleaning, or if it is worn or damaged, replace the
pickup roller.
Separation pad is defective. Clean the separation pad. If it is still dirty after
cleaning, or if it is worn or damaged, replace the
separation pad.
Drive gears are damaged. Check the drive gears in the paper pickup unit.
Replace the pickup drive assembly if the gears
are damaged.
Multi-purpose tray pickup solenoid is defective. 1. Disconnect the connector J25 for the multi-
purpose tray pickup solenoid from the DC
controller PCB.
2. Measure the resistance between the cable-
side connectors J25-1 and J25-2.
3. If the measured resistance is NOT about
108 ohms, replace the multi-purpose tray
pickup solenoid.
Pickup motor is defective. Replace the paper pickup drive assembly.
Paper pickup assembly is defective. Replace the paper pickup assembly.
DC controller PCB is defective. Replace the DC controller PCB. Calibrate the
printer after replacing the DC controller. See
Calibrate now.
Table 7-9. Jams in Tray 2
Causes for jams in Tray 2
Cause
Solution
Pickup roller, separation roller, or feed roller in
the paper cassette is deformed.
If any one of these rollers is damaged, replace
all three rollers together.
336 Chapter 7 Troubleshooting ENWW
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