Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Important safety
information. . . . . . . . . . . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 2
Safety inspection guide . . . . . . . . . . . . . 3
Handling electrostatic discharge-sensitive
devices . . . . . . . . . . . . . . . . . . . 4
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multi-lingual translations) . . . . . . 4
Chapter 2. Important service
information. . . . . . . . . . . . . . . 27
Strategy for replacing FRUs . . . . . . . . . . 27
Strategy for replacing a solid-state drive . . . 27
Important notice for replacing a system
board . . . . . . . . . . . . . . . . . 27
How to use error codes . . . . . . . . . . 27
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . . 28
Product definition . . . . . . . . . . . . 28
FRU identification . . . . . . . . . . . . 28
Chapter 3. Product Overview . . . . . 29
Chapter 4. Service checkout and
symptom-to-FRU index . . . . . . . . 31
Service checkout . . . . . . . . . . . . . . 31
Problem determination tips . . . . . . . . 31
Symptom-to-FRU index . . . . . . . . . . . 32
Power supply problems . . . . . . . . . . 32
POST error codes . . . . . . . . . . . . 33
Miscellaneous error conditions . . . . . . . 34
Undetermined problems . . . . . . . . . 36
Chapter 5. Troubleshooting,
diagnostics, and recovery . . . . . . . 37
Basic procedure for resolving hub problems. . . . 37
Frequently asked questions . . . . . . . . . . 37
Troubleshooting . . . . . . . . . . . . . . 38
Startup and shutdown problems . . . . . . 38
Microsoft Teams Rooms problems . . . . . 38
Zoom Rooms System problems. . . . . . . 38
Screen problems . . . . . . . . . . . . 39
Audio problems . . . . . . . . . . . . . 40
Storage drive problems . . . . . . . . . . 40
External monitor problems . . . . . . . . . 41
Network problems . . . . . . . . . . . . 41
Performance problems . . . . . . . . . . 42
USB device problems . . . . . . . . . . 43
Diagnostics . . . . . . . . . . . . . . . . 43
Lenovo diagnostic tools . . . . . . . . . . 43
UEFI diagnostic program . . . . . . . . . 43
Recovery . . . . . . . . . . . . . . . . . 44
Restore system files and settings to an earlier
point . . . . . . . . . . . . . . . . . 44
Restore your files from a backup . . . . . . 44
Reset your hub . . . . . . . . . . . . . 44
Use advanced options . . . . . . . . . . 44
Windows automatic recovery. . . . . . . . 45
Create and use a recovery USB device . . . . 45
Update the device driver . . . . . . . . . 45
Chapter 6. Hardware removal and
installation . . . . . . . . . . . . . . . 47
Handling static-sensitive devices . . . . . . . . 47
Service tool kit . . . . . . . . . . . . . . . 47
Major FRUs and CRUs . . . . . . . . . . . . 48
System board and Skype board . . . . . . . . 51
Removing hardware . . . . . . . . . . . . . 52
External options . . . . . . . . . . . . . 52
Bottom cover . . . . . . . . . . . . . . 52
Bottom chassis . . . . . . . . . . . . . 53
M.2 solid-state drive . . . . . . . . . . . 54
Wi-Fi card . . . . . . . . . . . . . . . 55
System board and heat sink . . . . . . . . 56
HDMI-in board . . . . . . . . . . . . . 57
Video capture card . . . . . . . . . . . . 59
Skype board . . . . . . . . . . . . . . 60
Thermal sensor cable . . . . . . . . . . . 61
System fan . . . . . . . . . . . . . . . 62
Skype board bracket . . . . . . . . . . . 63
Mechanical chassis . . . . . . . . . . . 64
LCD panel . . . . . . . . . . . . . . . 65
MIPI cable . . . . . . . . . . . . . . . 66
Internal microphones . . . . . . . . . . . 66
LCD back cover . . . . . . . . . . . . . 67
Wi-Fi antenna cables . . . . . . . . . . . 67
Hinge pipe . . . . . . . . . . . . . . . 68
LED board and LED lens . . . . . . . . . 69
Internal speakers . . . . . . . . . . . . 70
Infrared board. . . . . . . . . . . . . . 71
Hinge assembly . . . . . . . . . . . . . 72
© Copyright Lenovo 2020 i
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