How to use the parts lists and diagrams
CAUTION:
Be sure to order the correct part. When looking for part numbers for electrical
components, pay careful attention to the voltage that is listed. Doing so will make sure that the part
number selected is for the correct model.
NOTE:
In this manual, the abbreviation “PCA” stands for “printed circuit-board assembly.”
Components described as a PCA might consist of a single circuit board or a circuit board plus other
parts, such as cables and sensors.
The figures in this chapter show the major subassemblies in the product and their component parts. A
parts list table follows each exploded view assembly diagram. Each table lists the item number, the
associated part number, and the description of each part. If a part is not listed in the table, then it is not
a field replacement unit (FRU).
Assembly locations
Base product (no optional trays or accessories)
Figure 2-1
Base product (no optional trays or accessories)
1
2
3
8
7
6
5
4
9
10
11
12
13
Item
Description
Item
Description
1
Dummy cover
8
I/O plate
2
Formatter cover
9
Power switch
3
Right cover
10
Tray 2
4
Left cover
11
Tray 1/Cartridge drawer door
5
Rear door
12
Output-bin extension for long paper
6
Power port
13
Standard output bin
7
Right-rear cover
ENWW
How to use the parts lists and diagrams
143
Summary of Contents for LaserJet Pro M521
Page 1: ...LASERJET PRO MFP Repair Manual M521 2 ...
Page 2: ......
Page 3: ...HP LaserJet Pro MFP M521 Printer Repair Manual ...
Page 6: ...iv Conventions used in this guide ENWW ...
Page 10: ...viii ENWW ...
Page 14: ...14 mm 4 Chapter 1 Removal and replacement ENWW ...
Page 148: ...138 Chapter 1 Removal and replacement ENWW ...
Page 155: ...ENWW Assembly locations 145 ...
Page 186: ...176 Chapter 2 Parts and diagrams ENWW ...
Page 189: ......
Page 190: ... 2012 Hewlett Packard Development Company L P www hp com A8P79 90904 A8P79 90904 A8P79 90904 ...