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HP Laserjet 4200/4300/4250/4350
Maintenance Kit Installation

Tray 1 pickup roller

Note If the optional envelope feeder accessory is installed, press the release button that is on the left
side and remove it. Then proceed to step 2.
1. Remove the front accessory cover

Tray 1 pickup roller (1 of 2)
2. Release the pickup roller by sliding apart the latches that are located on each side at the top
of the roller. Lift the roller out of the opening.

Tray 1 pickup roller (2 of 2)
Reinstall note When you install the pickup roller, place the two pivot pins in the lower mounting slots and rotate the roller into the printer until it snaps into place.

Tray 1 separation pad
Note If the optional envelope feeder accessory is installed, press the release button that is on the left
side and remove it. Then proceed to step 2.

1. Remove the front accessory cover (not shown).
2. Insert the tip of a a small flat-blade screwdriver under the tray 1 separation pad.
3. Carefully twist the screwdriver to dislodge the separation pad. Remove the tray 1 separation pad

Tray 1 Separation Pad (diag above)

Tray 2 feed rollers
1. Remove tray 2 and place it on a level work surface. Locate and open the cover (arrow) that is
next to the roller in tray 2.(below)

Tray 2 feed rollers (1 of 4)
2. Pinch the blue latch that is on the left side of the roller. Slide the roller off of the shaft
(below)

Tray 2 feed rollers (2 of 4)

CAUTION When you install the roller, make sure that it locks into place. Verify that the roller is correctly
oriented, and that the round, black spacer next to the roller is correctly positioned against the
locking pin on the shaft .

Do not allow the front of the printer to extend beyond the edge of the work surface. The printer
can become unbalanced and fall, which can cause damage to the printer or personal injury to the
service technician.

3. Move the front of the printer to the edge of the work surface for better access to the feed
roller. To find the rollers, look up into the inside of the opening that was created when you
removed tray 2.

Tray 2 feed rollers (3 of 4)
4. Pinch the blue latch on the left side of the feed roller. Slide the roller off of the shaft. You
might need to rotate the roller in order to pinch the latch.

Tray 2 feed rollers (4 of 4)
5. Repeat the previous step for the remaining white pickup roller.
Reinstall note When you install a roller, make sure that it locks into place on the tabs that are on the drive gear

Transfer roller
1. Open the control-panel door and tray 1.
CAUTION Do not touch the black rubber on the roller. Skin oils on the roller can cause print-quality problems.
The use of disposable gloves is recommended when you remove the transfer roller.
2. Use a flat-blade screwdriver to lift the left end of the metal shaft out of place near the blue
gear. Slide the transfer roller to the left to remove it.

Transfer roller (diag above)
Reinstall note When you install the transfer roller, make sure that the black collar on the left side is oriented
correctly, with the open end face down (the solid end is face up).

Fuser
WARNING! The fuser is very hot. After turning the printer power off, allow the fuser to cool for at least
30 minutes before removing it.
1. Remove the rear output bin.
2. Squeeze the blue fuser release tabs

Fuser (1 of 2)
3. Pull the fuser straight back and out of the printer.
CAUTION Do not drop or jar the fuser. It can easily be damaged if it is mishandled.(below)

Fuser (2 of 2)
Hint: When you replace the fuser, make sure that it is fully seated into the printer. You should hear both
sides snap into place.

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