Parts Removal Order - HP LaserJet PRO M521 Repair Manua

Parts removal order

Figure 1-4
1. covers and customer replaceable assemblies
Assembly
Toner cartridge
Tray2,3
Formatter cover
Formatter PCA
ICB
Fax card and cable
Dummy cover
Rear cover assy
Left cover
Right-rear cover
Tray 1 cover
Cartridge-door assy
Right cover
Lower right cover
Top cover
I/O Plate
ADF pickup &
separation roller
2. ADF/Scanner assembly
Assembly
Control Panel
top cover
Control Panel
sub cover
Control Panel
USB PCA
Control Panel
FFC cable
USB cable &
grounding cable
Wifi module
and cable
ADF whole unit
Scanner whole unit
ADF hinge assembly
3. Main assemblies
Assembly
Tray 1 pickup roller
Tray 1
separation pad
Tray 2, 3
pickup roller
Tray 2, 3
separation pad
Tray 2, 3 base-plate
roller assy
Transfer roller
Fuser
Duplex media-feed
assy
Registration roller
assy
Power-switch assy
Interlock switch assy
Tray sensor PCA
Main fan
DC controller
Top cover
Laser scanner
Tag holder assy
LVPS (Low-voltage
power supply)
Tray 1, 2 pickup
solenoid
Fuser motor
Pendulum assy
Sub fan and
fan duct
Environmental
sensor
Tray 2 paper pickup
HVPS
10 Chapter 1 Removal and replacement
Parts removal order: covers and customer-replaceable assemblies
Remove Remove Remove
Formatter cover
Formatter cover
Formatter cover
Formatter cover
Rear cover assy
Formatter cover Rear cover assy
Rear cover assy Left cover Tray 1 cover
Formatter cover Tray 1 cover Cartridge-door assy
(could choose (could choose not
Dummy cover
not remove) remove, only open)
Rear cover assy
ADF/Scanner assy
Left cover
Formatter cover Formatter PCA Formatter Stay
ICB
(sheet metal)
Fax card
Remove Remove Remove
Control Panel
top cover
Control Panel Control Panel
top cover sub cover
Control Panel USB bracket
top cover (sheet metal)
Scanner lower Control Panel
cover top cover
Formatter cover
Scanner lower Control Panel
cover top cover
Dummy cover
Rear cover assy
Scanner lower
cover
Left cover
Scanner rear
ADF/Scanner
assy cover
Scanner rear
cover
Remove Remove Remove
Rear cover assy Right-rear cover
Rear cover assy Right-rear cover
Rear cover assy Left cover
Tray 1 cover Cartridge-door assy
Tray 1 cover Cartridge-door assy
Tray 1 cover Cartridge-door assy
Formatter cover
Tray 1 cover Cartridge-door assy
Dummy cover
Tray 1 cover Cartridge-door assy
Rear cover assy
ADF/Scanner assy
Left cover
ADF/Scanner assy Top cover
ADF/Scanner assy Top cover
Right cover Lower right cover
Right cover Lower right cover
Formatter cover
Dummy cover
Right cover Lower right cover
Rear cover assy
Right cover Lower right cover
Left cover
Right cover Lower right cover
Right-rear cover
Right cover Lower right cover
Tray 1 cover
Cartridge-door
assy Duplex media-feed Right cover
assy
Duplex media-feed Right cover
assy
Remove Remove
ADF/Scanner assy
ADF/Scanner assy Right cover
I/O Plate assembly
Remove
Control Panel
sub cover
Remove Remove
Right cover
Right cover
Right cover
Right cover
Right cover Lower right cover
(if removing sheet
metal plate)
ADF/Scanner assy Top cover
ADF/Scanner assy Top cover
ADF/Scanner assy Top cover
ADF/Scanner assy Top cover
ADF/Scanner assy Top cover
ADF/Scanner assy Top cover
Lower right cover ADF/Scanner assy
Lower right cover ADF/Scanner assy
Remove Remove Remove
DC controller LVPS
DC controller LVPS
DC controller LVPS
DC controller LVPS Fuser motor
LVPS
DC controller
DC controller LVPS
with plate
Top cover DC controller LVPS
Top cover DC controller LVPS
ENWW