HP ZBook 14u G4 Mobile Workstation Bedienungsanleitung Seite 71
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USB/audio board
Description Spare part number
USB/audio board 916922-001
Before removing the USB/audio board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 29).
5. Remove the battery (see Battery on page 34).
6. Remove the keyboard (see Keyboard on page 44).
7. Remove the internal base plate (see Internal base plate on page 49
Remove the USB/audio board:
1. Disconnect the cable from the USB/audio board (1).
2. Remove the 2 Phillips M2.5×5.0 screws (2) that secure the USB/audio board to the computer.
3. Lift up rear side of the board, and then pull it away from the side of computer to remove it (3).
Reverse this procedure to install the USB/audio board.
Component replacement procedures 59
- Maintenance and Service Guide 1
- Safety warning notice 5
- Table of contents 7
- 1 Product description 13
- Display 7 19
- Using the hot keys 24
- Bottom 13 25
- Component 27
- (2) Product number 27
- (3) Serial number 27
- (4) Warranty period 27
- 3 Illustrated parts catalog 28
- Computer major components 17 29
- Plastics Kit 32
- Mass storage devices 33
- Cable Kit 34
- Miscellaneous parts 34
- Miscellaneous parts 23 35
- Tools required 36
- Service considerations 36
- Cables and connectors 37
- Drive handling 37
- Grounding guidelines 38
- Workstation guidelines 39
- Equipment guidelines 40
- Customer Self-Repair parts 41
- Description Spare part number 46
- Hard drive 47
- Solid-state drive (SSD) 49
- Memory modules 50
- WLAN/Bluetooth combo card 52
- WWAN module 54
- Keyboard 56
- 10. Remove the keyboard (8) 58
- RTC battery 60
- Internal base plate 61
- Heat sink/fan assembly 63
- Fingerprint reader assembly 65
- Touchpad board 67
- NFC module 68
- Smart card reader board 69
- USB/audio board 71
- System board 72
- Speaker assembly 75
- Display assembly 76
- Power button board 83
- Top cover 85
- 8 Troubleshooting guide 88
- Resources 89
- General troubleshooting steps 89
- Identify the issue 90
- 2. Examine the environment 92
- Analyze the issue 93
- Table 8-5 Boot-error codes 99
- Resolve the issue 101
- 13. Replace the system board 104
- Helpful Hints 105
- During operation 106
- Consulting with HP Service 106
- Power-on issues 107
- AC adapter issue 110
- Battery discharges too fast 112
- Burnt smell 113
- No video (with power) 113
- Blinking lights 114
- Diagnostics error messages 115
- Performance (OS) 116
- Intermittent shutdown 117
- Blue screen 118
- No wake up 121
- Unresponsive 123
- Slow performance 123
- Incorrect time and date 124
- Display anomalies 125
- Dead pixel 127
- No video (internal) 127
- No video (external) 128
- DisplayPort/VGA 128
- Touch screen 130
- I/O devices 131
- Keyboard point stick 132
- Keyboard backlight 132
- TouchPad 133
- Smart card reader 137
- Thunderbolt (TB) 139
- Read-write error 142
- Blue screen (BSOD) error 142
- Noisy hard drive 143
- Mechanical 144
- Noise (sound) 145
- Fan runs constantly 146
- Thermal shutdown (hot) 147
- Stuck power button 147
- Additional information 148
- Processor not executing code 149
- Memory module error 149
- Failure - System Board Error 150
- Error message list 153
- Bug check symbolic names 153
- Use Windows Debugging Tool 154
- Additional information 143 155
- 6. Open the crash dump le 157
- Additional information 145 157
- Lookup for Bug Check 0xC2 158
- Cable management 160
- Connector types 161
- Using Computer Setup 163
- Updating the BIOS 164
- Downloading a BIOS update 165
- 11 Backup and recovery 169
- Using Windows tools 170
- Restore and recovery 171
- 12 Specications 175
- Hard drive specications 177
- Nonvolatile memory usage 183
- Questions and answers 185
- 15 Recycling 187
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