5
Removal and replacement
Introduction
.........................................................................................................................................
94
Removal and replacement strategy
..................................................................................
94
Electrostatic discharge
.......................................................................................................
94
User-replaceable parts
......................................................................................................
94
Required tools
...................................................................................................................
95
Before performing service
..................................................................................................
95
After performing service
.....................................................................................................
96
Post-service tests
..............................................................................................................
96
Test 1 (print-quality test)
...................................................................................
96
Test 2 (copy-quality test)
...................................................................................
96
Test 3 (fax-quality test)
......................................................................................
97
Parts removal order
...........................................................................................................
98
Remove the print cartridge
................................................................................................
99
External panels, covers, and doors
..................................................................................................
100
Right cover
.......................................................................................................................
100
Left cover
.........................................................................................................................
102
Print-cartridge door
..........................................................................................................
104
Rear cover
.......................................................................................................................
106
Top cover
.........................................................................................................................
108
Replace the ADF pickup-roller assembly
.........................................................................................
110
ADF scanner glass
...........................................................................................................................
113
ADF assembly
..................................................................................................................................
115
Scanner/ADF assembly
....................................................................................................................
117
Bezel and control panel
....................................................................................................................
119
Internal assemblies
..........................................................................................................................
122
Convenience-stapler assembly (HP LaserJet M2727nfs only)
........................................
122
Convenience-stapler power supply (HP LaserJet M2727nfs only)
..................................
124
Convenience-stapler AC inlet cable (HP LaserJet M2727nfs only)
.................................
126
Convenience-stapler power supply bracket and strap (HP LaserJet M2727nfs only)
.....
127
Speaker
...........................................................................................................................
128
Power-switch PCA
...........................................................................................................
130
Formatter
.........................................................................................................................
132
Duplex assembly
.............................................................................................................
135
Laser/scanner (print engine)
............................................................................................
137
Memory-tag-reader assembly (E-label reader)
................................................................
139
Fan
...................................................................................................................................
141
Duplex-drive gears
...........................................................................................................
143
Duplex solenoid
...............................................................................................................
145
Fuser
................................................................................................................................
147
Interlock assembly
...........................................................................................................
152
Engine controller assembly (ECU)
...................................................................................
153
Main motor
.......................................................................................................................
158
Pickup-and-feed assemblies
............................................................................................
160
Transfer roller
..................................................................................................
160
Registration-roller assembly
............................................................................................
161
Main gear assembly and tray 2 pickup solenoid
..............................................................
162
6
Solve problems
Problem-solving checklist
.................................................................................................................
166
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ENWW