HP Z840 Maintenance and Service Guide - Page 60

Processor and processor heatsink, CAUTION

Get HP Z840 PDF manuals and user guides View all HP Z840 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 60 highlights

Processor and processor heatsink CAUTION: Observe the following cautions when removing or replacing the heatsink. - When removing the heatsink, loosen all screws a little at a time to ensure the processor remains level. Do not fully loosen one screw, and then move on to the next. - After you remove the processor heatsink from the chassis, use alcohol and a soft cloth to clean the thermal compound residue from the processor and the heatsink, allowing the alcohol on the processor and processor heatsink to dry completely. - If you are reusing the original heatsink, apply thermal compound to the center of the processor top surface. - If you are using a new processor heatsink, do not apply thermal compound to the processor because the new heatsink already has thermal compound applied to the heatsink surface. Instead, remove the thermal compound protective liner from the bottom of the new heatsink. - Do not overtighten the heatsink screws. Overtightening can strip the threads in the chassis. - Do not fully tighten one screw and then move on to the next. Instead, tighten all screws a little at a time, ensuring that the processor remains level. CAUTION: Observe the following cautions when removing or replacing the processor. - If you are installing a second processor, it must be of the same type as the first processor. - Internal components might be powered even when the computer is off. To prevent damage, disconnect the computer power cord before you remove or install a component. - The processor socket contacts and pads are extremely fragile. Do not touch the processor socket contacts or the gold pads underneath the processor. Use extreme care and handle the processor only by the edges. - The processor socket contacts are delicate and bend easily. To avoid bending the contacts, use extreme care when installing the processor in the socket. - Installing a processor incorrectly can damage the system board. Contact an HP authorized reseller or service provider to install the processor. If you plan to install the processor yourself, view the entire remove and replace video before you begin. - Failure to follow the computer preparation instructions can result in an improperly installed processor, causing extensive computer damage. 50 Chapter 3 Component replacement information and guidelines

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
Processor and processor heatsink
CAUTION:
Observe the following cautions when removing or replacing the heatsink.
— When removing the heatsink, loosen all screws a little at a time to ensure the processor remains level. Do
not
fully loosen one screw, and then move on to the next.
— After you remove the processor heatsink from the chassis, use alcohol and a soft cloth to clean the thermal
compound residue from the processor and the heatsink, allowing the alcohol on the processor and processor
heatsink to dry completely.
— If you are reusing the original heatsink, apply thermal compound to the center of the processor top
surface.
— If you are using a new processor heatsink, do not apply thermal compound to the processor because the
new heatsink already has thermal compound applied to the heatsink surface. Instead, remove the thermal
compound protective liner from the bottom of the new heatsink.
— Do not overtighten the heatsink screws. Overtightening can strip the threads in the chassis.
— Do not fully tighten one screw and then move on to the next. Instead, tighten all screws a little at a time,
ensuring that the processor remains level.
CAUTION:
Observe the following cautions when removing or replacing the processor.
— If you are installing a second processor, it must be of the same type as the
first
processor.
— Internal components might be powered even when the computer is
off.
To prevent damage, disconnect the
computer power cord before you remove or install a component.
— The processor socket contacts and pads are extremely fragile. Do not touch the processor socket contacts
or the gold pads underneath the processor. Use extreme care and handle the processor only by the edges.
— The processor socket contacts are delicate and bend easily. To avoid bending the contacts, use extreme
care when installing the processor in the socket.
— Installing a processor incorrectly can damage the system board. Contact an HP authorized reseller or
service provider to install the processor. If you plan to install the processor yourself, view the entire remove
and replace video before you begin.
— Failure to follow the computer preparation instructions can result in an improperly installed processor,
causing extensive computer damage.
50
Chapter 3
Component replacement information and guidelines