HP laserjet pro 400 mfp - Parts removal order

Parts removal order
Use the following diagram to determine which parts must be removed before removing other parts.
Figure 1-2 Parts-removal order
Component Remove Remove Remove Remove Remove Remove Remove Remove
Toner cartridge
Tray 2 cassette
Tray 1 pickup roller
Tray 1 separation pad Left cover
Tray 1 pickup gear assembly Left cover
Tray 2/3 pickup roller Tray 2/3 cassette
Tray 2/3 separation roller Tray 2/3 cassette
Document feeder pickup rollers
Document feeder separation pad
Transfer roller Toner cartridge
Left cover Tray 2 cassette
Scanner assembly Left cover
Control panel Left cover Scanner assembly
Right cover Left cover Scanner assembly Control panel
Top cover Left cover Scanner assembly Control panel Right cover
Rear cover and feed assembly Left cover Scanner assembly Control panel Right cover
Cartridge door and
front cover assembl
y
Left cover Scanner assembly Control panel Right cover
Document feeder assembly Left cover Scanner assembly
Laser scanner assembly Left cover Scanner assembly Control panel Right cover Top cover
Registration roller assembly Left cover Scanner assembly Control panel Right cover Rear cover
and feed
assembly
Top cover
Fuser assembly
and paper feed guide
Left cover Scanner assembly Control panel Right cover Rear cover
and feed
assembly
Duplex drive assembly Left cover Scanner assembly Control panel Right cover Top cover
Tray 1 solenoid Left cover
Tray 2 solenoid Left cover Scanner assembly Control panel Right cover
Duplex solenoid Left cover Scanner assembly Control panel Right cover Rear cover
and feed
assembly
Top cover Fan Duplex drive
assembly
Main motor Left cover Scanner assembly Control panel Right cover Rear cover
and feed
assembl
y
Top cover Fuser ECU
Fan Left cover Scanner assembly Control panel Right cover Top cover
Engine controller unit (ECU) PCA Left cover Scanner assembly Control panel Right cover Rear cover
and feed
assembly
Top cover
Formatter PCA Left cover Wireless PCA
(wireless models)
USB PCA Left cover
Wireless PCA (wireless models) Left cover
Fax PCA Left cover
Power switch PCA Left cover Scanner assembly Control panel Right cover Front cover
assembl
y
Connecting PCA Left cover Scanner assembly Control panel Right cover
Optional paper feeder right cover
Optional paper feeder driver PCA Tray 3 right cover
Optional paper feeder
p
a
p
er sensor PCA
Tray 3 right cover
ENWW
Service approach
5
For more information and parts on the HP LaserJet Pro 400, M425 call 800-551-1943 or order on line at www.printersupplies.com