Causes for jams in Tray 3, Tray 4, or Tray 5 (HP Color LaserJet 5550models only)
Cause
Solution
Lifting plate or lifter drive mechanism in the Tray
3 or Tray 4 cassette is defective.
Replace the cassette, or the lifter drive assembly.
Lifting plate or lifter drive mechanism in the Tray
2 cassette is defective.
Replace the cassette.
Paper feeder PCB is defective. Replace the paper feeder PCB.
DC controller PCB is defective. Replace the DC controller PCB. Calibrate the
printer after replacing the DC controller. See
Calibrate now.
Table 7-11. Jams in the paper path
Causes for jams in the paper path
Cause
Solution
Registration shutter is defective.
(This applies to jams that occur before the
registration roller.)
Make sure the shutter is clean, moves smoothly,
and that the spring is in place. If the shutter is
damaged, replace the paper pickup assembly.
Drive gears are damaged.
(This applies to jams that occur before the
registration roller.)
Check the drive gears in the paper pickup unit.
Replace the pickup drive assembly if the gears
are damaged.
Registration roller and registration sub roller are
dirty, worn, or damaged.
(This applies to jams that occur before the
registration roller.)
Clean the registration roller or registration sub
roller if it is dirty. If it is still dirty after cleaning, or
if it is worn or damaged, replace the paper
pickup assembly.
Attaching roller is damaged.
(This applies to jams in which paper is crumpled
into an accordion as it enters the ETB.)
Check if the attaching roller is damaged. If it is
damaged, replace the ETB. Calibrate the printer
after replacing the ETB. See
Calibrate now.
Cartridge shutter open/close mechanism is
damaged.
(This applies to jams in which paper is crumpled
into an accordion fold somewhere on the ETB
belt.)
The shutters in each print cartridge should open
as you close the ETB. If a shutter does not open,
reseat that cartridge. Replace the cartridge if
necessary. Also check for a damaged shutter
mechanism in the printer.
Cartridge drive motor assembly is damaged. Inspect the cartridge drive assembly in each
print cartridge. If any are damaged, replace the
assembly for that print cartridge.
Attaching roller is defective. Make sure the attaching roller is clean and the
spring is in place. If the roller is damaged,
replace the ETB. Calibrate the printer after
replacing the ETB. See
Calibrate now.
Top of page sensor is defective. Replace the multi-purpose tray sensor PCB.
Table 7-10. Jams in Tray 3, Tray 4, or Tray 5 (HP Color LaserJet 5550 models only)
(continued)
338 Chapter 7 Troubleshooting ENWW
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