HP D8C84UT#ABA User Manual download pdf (Page 82)

5. Loosen the four captive screws that secure the heat sink to the system board tray.

CAUTION: Heat sink retaining screws should be removed in diagonally opposite pairs (as in

an X) to even the downward forces on the processor. This is especially important as the pins on

the socket are very fragile and any damage to them may require replacing the system board.

Figure 7-47 Removing the heat sink screws

74 Chapter 7 Removal and Replacement Procedures Small Form Factor (SFF) Chassis

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Maintenance and Service Guide 1
About This Book 3
Table of contents 5
1 Product Features 9
Front Panel Components 10
Rear Panel Components 11
Serial Number Location 12
Software 13
Computer Setup—File 18
Computer Setup—Storage 19
Computer Setup—Security 20
Computer Setup—Power 22
Computer Setup—Advanced 23
SATA Hard Drives 25
SATA Hard Drive Cables 25
SMART ATA Drives 26
Hard Drive Capacities 26
Chassis Designations 27
Generating Static 28
Grounding the Work Area 29
Operating Guidelines 30
Routine Care 31
Service Considerations 32
Cables and Connectors 33
Hard Drives 33
Lithium Coin Cell Battery 34
6 Illustrated parts catalog 35
Spare parts 29 37
Spare parts 31 39
Spare parts 33 41
Spare parts 35 43
Preparation for Disassembly 45
Computer Access Panel 47
Front Bezel 48
Bezel Blanks 49
System Board Connections 50
Installing Additional Memory 51
Populating DIMM Sockets 52
Installing DIMMs 52
Cable Management 61
Drive Positions 63
Description Spare part number 77
Baffle 636921-001 77
Front Fan Assembly 78
Speaker 636925-001 80
Heat sink 81
Processor 84
Power Supply 86
P2 PWRCMD 87
P3 PWRCPU 87
System Board 88
Type 1 Battery Holder 91
Type 2 Battery Holder 91
Type 3 Battery Holder 92
Orientation 93
Installing a Security Lock 94
Installing a Security Lock 87 95
Front Bezel Security 96
A Power Cord Set Requirements 98
Country-Specific Requirements 99
B POST Error Messages 100
Audible Codes 102
Safety and Comfort 104
Helpful Hints 105
Solving General Problems 107
Solving General Problems 101 109
Solving Power Problems 111
Solving Hard Drive Problems 113
Solving Display Problems 118
Solving Display Problems 111 119
Solving Display Problems 113 121
Solving Audio Problems 123
Solving Printer Problems 125
Solving Network Problems 131
Solving Network Problems 125 133
Solving Memory Problems 134
Solving Memory Problems 127 135
Solving Processor Problems 136
Cause Solution 142
Solving Software Problems 144
Resetting the Password Jumper 146
F System Recovery 151
System Recovery options 152
Recovery media 154
G Specifications 156

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