This kit is the parts needed to repair fuser gear
noise.
Specifications
Models Used: 2400
Instruction Version: 9/6/08
Expected Duty Life: N/A
OEM Part Number: N/A
Kit
Contents:
1 HP RU5-0378-000CN
1 HP RU5-0379-000CN
1 HP RU5-0377-000CN
NOTE: PROCEEDURE IS
WRITTEN ASSUMING THAT THE FUSER WILL BE REPLACED.
Remove Paper Tray:
Locate
the horizontal groove in the front of the machine. Pull the paper tray straight
back away from the machine.
Remove
Toner Cartridge:
Locate
the toner cover release at the top front of the machine. Pull back on the
release. Pull back on the toner door. Locate the handle on the toner cartridge.
Lift slightly up and then out of the machine.
Remove Back Cover:
Turn
the machine around. Locate the tab on the face down delivery door and pull the
door open. Locate the two tabs, one on each side of the door, that keep the
door captive. Release the tabs and pull the door down. Locate the two screws,
one on each side of the door, and remove the screws. Locate the two tabs on the
inside of the paper tray cavity. Use a flat blade screwdriver or a spring hook
to release these tabs to remove the back cover.
Remove the I/O Cover:
Pull
the right side of the I/O cover away from the machine. Clear the captive tabs
from the machine and remove the cover.
Remove the Fuser Cable Cover:
Locate
the fuser cable cover at the right side of the fuser frame. Locate and release
the tab for the cover. Rotate the cover towards the center of the machine and
remove.
Remove the
Duplexer Inlet Guide:
Locate
the duplexer inlet guide at the base of the fuser. Use a flat blade screwdriver
or spring hook to lift up on the two tabs that keep the guide captive. Remove
the guide by pulling straight back from the machine.
Remove the Fuser:
Locate
the wire connectors at each side of the fuser. Note: The wire harness at the
left of the fuser that connects to the power supply is a captive wire harness.
Remove the two wire harnesses. Locate the four screws at the corners of the
fuser and remove the screws. Tilt the fuser slightly down and pull it away from
the machine.
Replace the Faulty
Gears:
Locate
the gear cluster at the top of the left side of the fuser cavity. The three
gears that are to be replaced are located around a fourth gear that will not be
replaced. Using a small flat blade screwdriver or a spring hook, depress the
tab on the inside of the 19 tooth gear, the one closest to the back of the
machine, and remove and replace that gear. Locate and remove the 20 tooth gear
at the lowest position of the three gears. Replace the 20 tooth gear. Locate
and remove the 21 tooth gear at the position closest to the front of the
machine. Replace the 21 tooth gear.
Note: The gears can be replaced in the
wrong position, so replace these gears one at a time.