HP LaserJet Pro M521 Manuals

Manuals and User Guides for HP LaserJet Pro M521. We have 1 HP LaserJet Pro M521 manual available for free PDF download: Repair Manua

HP LaserJet Pro M521 Repair Manua

HP LaserJet Pro M521 Repair Manua (190 pages)

LASERJET PRO MFP

Brand: HP | Category: Other | Size: 18.02 MB

Table of Contents

Table of Contents
7
1 Removal and Replacement

11
- Removal and Replacement Strategy
  12
  - General Cautions During Removal and Replacement
    12
  - Electrostatic Discharge
    12
  - Required Tools
    13
  - Types of Screws
    13
- Service Approach
  15
  - Before Performing Service
    15
  - After Performing Service
    15
  - Post-Service Test
    15
    
    Print-Quality Test
    15
  - Location of Connectors
    17
    
    DC Controller Connections
    17
    
    Formatter Connections
    19
  - Parts Removal Order
    20
- Removal and Replacement Procedures
  21
  - Customer Self Repair (CSR) Assemblies
    21
    
    Toner Cartridge
    21
    
    Tray 2 or Tray 3 Assembly
    23
    
    Document Feeder Pickup Roller
    24
    
    Document Feeder Rollers
    24
    
    Document Feeder Separation Roller
    26
    
    Document Feeder Separation Pad
    27
  - External Panels, Covers, Doors, and Formatter
    28
    
    Formatter Cover
    28
    
    Formatter PCA
    29
    
    Fax PCA and Cable
    30
    
    Interconnect Board (ICB)
    31
    
    Formatter Stay
    32
    
    Dummy Cover
    33
    
    Rear Cover Assembly
    34
    
    Left Cover
    38
- Right-Rear Cover
  40
- Tray 1 Cover
  42
- Cartridge-Door Assembly
  44
- Right Cover Assembly
  46
- Lower Right Cover
  51
- Reinstall the Lower Right Cover
  53
- I/O Plate
  54
- Document Feeder Assemblies and Scanner
  56
  - Document Feeder/Scanner Assembly
    56
  - Document Feeder Whole Unit Kit and Scanner Whole Unit Kit
    62
  - Document Feeder Hinge Assembly
    67
  - Control-Panel Top-Cover
    67
  - Control-Panel Assembly
    69
  - Usb Pca
    70
  - Control-Panel FFC
    71
  - USB Cable and USB Grounding Cable
    74
  - Wi-Fi Module and Cable
    77
- Main Assemblies
  81
  - Tray 1 Pickup Roller
    81
  - Tray 1 Separation Pad
    83
  - Tray 2 or Tray 3 Pickup Roller
    84
  - Tray 2 or Tray 3 Separation Pad
    86
  - Tray 2 or Tray 3 Base-Plate Roller Assembly
    86
  - Transfer Roller
    88
  - Fuser
    90
  - Duplex Paper-Feed Assembly
    93
  - Registration Roller Assembly
    96
  - Power-Switch Assembly
    98
  - Interlock-Switch Assembly
    99
  - Tray Sensor PCA
    101
  - Main Fan
    103
  - Top Cover
    105
  - Laser Scanner
    108
  - Tag Holder Assembly
    111
  - DC Controller
    112
  - Low-Voltage Power Supply (LVPS)
    116
  - Tray 2 Paper Pickup Assembly
    122
  - Tray 1 or Tray 2 Pickup Solenoid
    128
  - Fuser Motor
    130
  - Pendulum Assembly
    131
  - Sub Fan and Fan Duct
    134
    
    Environmental Sensor
    138
    
    High-Voltage Power Supply (HVPS)
    140
2 Parts and Diagrams

149
- Order Parts by Authorized Service Providers
  150
- Related Documentation and Software
  152
- Fasteners Used in this Product
  152
- How to Use the Parts Lists and Diagrams
  153
- Assembly Locations
  153
  - Base Product (no Optional Trays or Accessories)
    153
  - Base Product (Optional Trays or Accessories)
    154
- Covers
  156
- Document Feeder and Scanner Assemblies
  158
- Control-Panel and USB PCA Assemblies
  160
- Document Feeder Assemblies
  162
- Internal Assemblies (1 of 6)
  164
- Internal Assemblies (2 of 6)
  166
- Internal Assemblies (3 of 6)
  168
- Internal Assemblies (4 of 6)
  170
- Internal Assemblies (5 of 6)
  172
- Internal Assemblies (6 of 6)
  174
- Input Devices
  176
  - 500-Sheet Input Tray (Tray 3)
    176
- Alphabetical Parts List
  178
- Numerical Parts List
  182
Index

187

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