HP Z840 Maintenance and Service Guide - Page 82

Power consumption and heat dissipation, Resetting the power supply, System board

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 82 highlights

Power consumption and heat dissipation Power consumption and heat dissipation specifications are available for multiple configurations. To review available specifications, see http://www.hp.com/go/quickspecs. To reach zero power consumption, unplug the workstation from the power outlet or use a power strip with an on/off switch. For additional information about power-saving features, see the operating system installation instructions. This product is in compliance with U.S. Executive Order 13221. Resetting the power supply If an overload triggers the power supply overload protection, power is immediately disconnected. To reset the power supply: 1. Disconnect the power cord from the workstation. 2. Determine what caused the overload and fix the problem. For troubleshooting information, see Diagnostics and troubleshooting on page 76. 3. Reconnect the power cord and restart the workstation. When you power off the workstation through the operating system, power consumption falls below what is considered low power consumption but does not reach zero. This low power consumption feature extends the life of the power supply. System board If you replace the system board: ● Make a note of the cable connections before disconnecting them from the system board. ● Follow good cable management practices. See Cable management on page 49. The following tables show system cabling for the workstations. 72 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
Power consumption and heat dissipation
Power consumption and heat dissipation
specifications
are available for multiple
configurations.
To review
available
specifications,
see
go/quickspecs
.
To reach zero power consumption, unplug the workstation from the power outlet or use a power strip with an
on/off
switch. For additional information about power-saving features, see the operating system installation
instructions.
This product is in compliance with U.S. Executive Order 13221.
Resetting the power supply
If an overload triggers the power supply overload protection, power is immediately disconnected.
To reset the power supply:
1.
Disconnect the power cord from the workstation.
2.
Determine what caused the overload and
fix
the problem. For troubleshooting information, see
Diagnostics and troubleshooting
on page
76
.
3.
Reconnect the power cord and restart the workstation.
When you power
off
the workstation through the operating system, power consumption falls below what is
considered low power consumption but does not reach zero. This low power consumption feature extends the
life of the power supply.
System board
If you replace the system board:
●
Make a note of the cable connections before disconnecting them from the system board.
●
Follow good cable management practices. See
Cable management
on page
49
.
The following tables show system cabling for the workstations.
72
Chapter 3
Component replacement information and guidelines