HP Pro 4300 C9H70UT C9H70UT#ABA manual Parts-removal tree

Parts-removal tree

Use the following diagram to determine the order in which parts must be removed.

Print cartridge

		Transfer roller	Note	Some components in the parts-removal tree have a
				superscript number listed next to the component name
Control-panel overlay				(for example, “Right-side cover1”). The superscript
Tray	1			indicates that this component must be removed to gain
				access to the transfer assembly and to the registration
Tray 2 feed rollers
				roller assembly. Components with superscript letters are
Rear	output bin			removed in numerical order.
Formatter cover

Firmware DIMM

Formatter assembly (2 machine screws)

Accessory covers and the tray 2 extension door

Fuser

Tray 1 pickup roller

Tray 1 separation pad

Top cover

Control-panel assembly

Right-side cover1

	Tray 2 media-size sensor
	Tray 2 lifter-drive assembly
	Cooling fan (right side; HP LaserJet 4300 only)2
	Laser/scanner
	Paper-pickup assembly3
	Print-cartridge motor (HP LaserJet 4300 only)4
	Main motor
	DC controller assembly5
		Main drive assembly6
	Components listed with superscripts 1, 2, 5, 6
Left-side cover7		Registration-roller assembly
	Output delivery assembly8
		Duplexing pendulum assembly
	Main cooling fan (left side)
	Power supply9

Paper-feed assembly

Tray 1 pickup assembly10

Components listed with superscripts 1, 3, 4, 5, 6, 7, 8, 9, 10

Note: The formatter assembly and fuser are only listed once, but they must be removed to gain access to some of the other components.

Transfer assembly

Q2431-90912 Chapter 6 Removing and replacing parts 135