HP LJ 2420 Fuser Access

The 2420's fuser is not user-replaceable, but it's not difficult to get at and replace.

There's a set of three gears that should be replaced whenever a fuser is replaced. You have full access to them once the fuser is out. The set of gears is P/N KIT-24xx-GR-NN. See this post for more infromation.

Proceed as follows to remove the fuser:

1) Tray 2

2) Rear Cover/Door Assembly
> Pull the rear door fully open.
> Two M4x10mm pan head threading screws.
> Two claws within the tray 2 cavity.

3) Mains Receptacle Bezel
> Treat as if hinged at its outboard long edge.
> There’s a single downward-hooking claw about 3 3/8" below its top edge. If the item is stubborn, slide a thin tool in behind it about 4" below its top edge and move the tool upward. You’ll unhook the claw.

4) Black Plastic Cover at Left Side (Your right.)
> One claw/latch -- it has a ‘handle’ extending rearward.
> Pull the cover toward you. A spring hook is helpful.

5) Fuser Power Cable
> It's at the lower right just below the line cord receptacle.

6) Exit Sensor Cable (Violet)

7) Thermistor Cable (Yellow and white.)
> Free the cable from its white restraint. The restraint can be unlatched with a fingernail or a small screwdriver.

8) Duplexer Input Ramp
> Two claws -- they have ‘handles’ extending rearward.
> Push up on the claw handles and pull the ramp toward you.

9) Fuser
> Three prominent M4x10mm pan head threading screws.
> One M3x6mm pan head screw w/captive star washer. It’s in a recess at the fuser’s lower right.
> Tug on the power cable and the green wheel to coax the fuser out the back.