HP ZBook Studio G5 Mobile Workstation User Manual Page 108
- Page / 192
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Items Procedures
Verify AC adapter
It is preferable to verify the battery before verifying the AC adapter. However, you can
verify the AC adapter rst, before opening the service door for a battery check.
●
Verify AC adapter is compatible with product. Verify that the part number is for
this computer if possible.
●
Verify AC adapter and power cord are good (no physical damage, bent middle ID
pin).
●
Verify AC adapter works on a veried working computer.
●
Plug in AC adapter and power on computer without battery.
●
Inspect power port on computer side for any damage, dust, or debris.
●
Check power light (7. Status lights, blinking light codes, troubleshooting lights,
and POST error messages on page 87). Rear power light indicates external power
to the computer is good.
NOTE: Refer to battery replacement section
for removing/replacing the battery
Verify battery condition/status
1. Check battery condition (overall result, cycle life, voltage, etc.) using HP PC
Hardware Diagnostics (UEFI) or HPSA tools.
2. Verify that battery is installed properly in battery bay without a gap and that
latch locks are tight (for models with removable batteries).
3. Check battery status light (7. Status lights, blinking light codes, troubleshooting
lights, and POST error messages on page 87). Be sure that battery is not fully
discharged, preventing system from booting.
4. Determine whether the computer can turn on with battery only.
5. Remove service door and test with a veried working battery. If the computer
boots, inspect original battery before replacement.
6. Test battery with a veried working computer to verify that it is OK.
7. If there is still no boot, remove battery and boot on AC power only.
The sections below are intended for authorized service providers/technicians.
Verify AC adapter – voltage
1. Measure DC voltage output that should be around 19.5 VDC and acceptable
voltage range is from 18.5 – 20.5 VDC.
2. If the DC voltage is out of range, replace the AC adapter.
NOTE: This action requires a digital voltmeter.
NOTE: 2015 mWS does not have the power
cable between system board and power
connector on chassis
Verify power button, power connector
1. Be sure that power button is not stuck.
2. Reseat power connector cable (if applicable).
3. Replace new power connector cable (if the cable exists and is defective)
4. To isolate faulty power connector cable and power button, technicians can short
power-on pads/pins to power up the computer. Contact HP Engineering for this
information.
Verify blinking lights (7. Status lights, blinking light codes, troubleshooting lights,
and POST error messages on page 87)
96 Chapter 6 Troubleshooting guide
- Maintenance and Service Guide 1
- Safety warning notice 3
- Table of contents 5
- 1 Product description 13
- 2 Components 18
- 8 Chapter 2 Components 20
- Display 9 21
- Keyboard area 22
- Keyboard area 11 23
- 12 Chapter 2 Components 24
- Special keys 25
- Action keys 26
- Keyboard area 15 27
- 16 Chapter 2 Components 28
- 3 Illustrated parts catalog 30
- Computer major components 19 31
- Computer major components 21 33
- Plastics Kit 34
- Mass storage devices 37
- Bracket Kit 39
- Miscellaneous parts 40
- Tools required 41
- Service considerations 41
- Drive handling 42
- Workstation guidelines 43
- Equipment guidelines 44
- Bottom cover 45
- Description Spare part number 47
- Solid-state drive (M.2) 49
- Optane memory module 51
- Memory module 52
- WWAN modules 56
- WLAN/Bluetooth combo card 58
- Hard drive connector 60
- Fingerprint reader board 61
- NFC module 64
- Bottom speakers 65
- 4. Remove the speaker (4) 66
- Card reader/audio board 67
- Thermal module 68
- Discrete graphics models: 70
- UMA graphics models: 70
- System board 71
- RTC battery 75
- Power button board 76
- Top speaker 78
- Display assembly 79
- Top cover/keyboard 88
- 6 Troubleshooting guide 89
- Resources 90
- General troubleshooting steps 90
- Identify the issue 91
- 2. Examine the environment 93
- Analyze the issue 94
- Table 6-5 Boot-error codes 100
- Resolve the issue 101
- 13. Replace the system board 104
- Helpful Hints 105
- During operation 106
- Consulting with HP Service 107
- Power-on issues 107
- AC adapter issue 110
- Battery discharges too fast 112
- Burnt smell 112
- No video (with power) 113
- Blinking lights 114
- Diagnostics error messages 114
- Performance (OS) 116
- Intermittent shutdown 117
- Blue screen 118
- No wake up 122
- Unresponsive 123
- Slow performance 123
- Display anomalies 124
- 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 136
- Thunderbolt (TB) 138
- Read-write error 141
- Blue screen (BSOD) error 141
- Noisy hard drive 142
- Mechanical 143
- Noise (sound) 144
- Fan runs constantly 145
- Thermal shutdown (hot) 146
- Stuck power button 146
- Additional information 147
- Processor not executing code 148
- Memory module error 148
- Failure - System Board Error 149
- Additional information 139 151
- Error message list 152
- Bug check symbolic names 152
- Use Windows Debugging Tool 153
- 6. Open the crash dump le 156
- Lookup for Bug Check 0xC2 157
- Additional information 145 157
- Cable management 159
- Connector types 160
- Using Computer Setup 162
- Updating the BIOS 163
- Downloading a BIOS update 164
- Using Windows tools 171
- Before you begin 172
- Creating the recovery media 172
- Restoring and recovery 173
- 10 Specications 176
- Nonvolatile memory usage 181
- Questions and answers 183
- 13 Recycling 188
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