HP ProDesk 600 G3 Base Model Microtower PC Uživatelský manuál Strana 21
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- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
3 Routine care, SATA drive guidelines, and
disassembly preparation
This chapter provides general service information for the computer. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. The power cord must be disconnected from the power source before opening the computer to prevent
system board or component damage.
Electrostatic discharge information
A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device
exposed to electrostatic discharge (ESD) may not appear to be aected at all and can work perfectly
throughout a normal cycle. The device may function normally for a while, but it has been degraded in
the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge
contains enough power to alter device parameters or melt silicon junctions.
Generating static
The following table shows how humidity aects the electrostatic voltage levels generated by dierent
activities. A product can be degraded by 700 volts.
●
Dierent activities generate dierent amounts of static electricity.
●
Static electricity increases as humidity decreases.
Relative Humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl oor
Motions of bench worker
Removing DIPs from plastic tube
7,500 V
3,000 V
400 V
400 V
15,000 V
5,000 V
800 V
700 V
35,000 V
12,000 V
6,000 V
2,000 V
Removing DIPs from vinyl tray
Removing DIPs from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
2,000 V
3,500 V
7,000 V
5,000 V
4,000 V
5,000 V
20,000 V
11,000 V
11,500 V
14,500 V
26,500 V
21,000 V
Electrostatic discharge information 13
- 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
- Non-vPro systems 12
- 2 Illustrated parts catalog 13
- Computer major components 7 15
- Miscellaneous parts 16
- Miscellaneous parts 9 17
- Miscellaneous parts 11 19
- Generating static 21
- Grounding the work area 22
- Operating guidelines 23
- Routine care 24
- Service considerations 25
- Cables and connectors 26
- Hard Drives 26
- Lithium coin cell battery 26
- SATA hard drives 27
- SMART ATA drives 27
- Preparation for disassembly 28
- Access panel 29
- Dust lter 30
- Front bezel 31
- Internal drive bezel 32
- Card reader module 34
- Hood sensor module 35
- Serial port module 36
- Hard drives 38
- Optical drives 41
- Optical drives 35 43
- Drive cage 44
- Memory module 45
- Expansion card 46
- Expansion card 39 47
- Power supply 49
- Fan-sink 50
- Fan-sink 43 51
- Processor 52
- System board 53
- Computer Setup–Main 57
- Computer Setup—Security 59
- Computer Setup—Advanced 61
- Safety and comfort 67
- Helpful hints 68
- Solving general problems 69
- Solving general problems 63 71
- Solving power problems 73
- Solving hard drive problems 74
- Solving display problems 77
- Solving display problems 71 79
- Solving audio problems 81
- Solving printer problems 83
- Solving network problems 88
- Solving network problems 81 89
- Solving network problems 83 91
- Solving memory problems 92
- Solving software problems 96
- 10 System backup and recovery 110
- Using Windows tools 111
- Restore and recovery 111
- Creating recovery media 114
- Backing up your information 116
- System Recovery 117
- System Restore 117
- A Battery replacement 121
- B Statement of Volatility 124
- C Power cord set requirements 125
- Country-specic requirements 126
- D Specications 127
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