User Manual

Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 3
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Chapter 2. Important service
information . . . . . . . . . . . . . . . 21
Strategy for replacing FRUs . . . . . . . . . . 21
Strategy for replacing a solid-state drive . . . 21
How to use error message . . . . . . . . . 22
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . . 22
Product definition . . . . . . . . . . . . 22
FRU identification . . . . . . . . . . . . 22
Chapter 3. General checkout . . . . . 23
What to do first . . . . . . . . . . . . . . . 23
Checkout guide . . . . . . . . . . . . . . . 24
Diagnosing problems . . . . . . . . . . . 24
Quick test programs . . . . . . . . . . . 25
UEFI diagnostic program . . . . . . . . . 25
Bootable diagnostic programs . . . . . . . 25
Power system checkout . . . . . . . . . . . 26
Checking the ac power adapter . . . . . . . 26
Checking the built-in battery and operational
charging . . . . . . . . . . . . . . . . 27
Chapter 4. Related service
information . . . . . . . . . . . . . . . 29
Reset or restore Windows . . . . . . . . . . . 29
Passwords. . . . . . . . . . . . . . . . . 29
Power-on password . . . . . . . . . . . 29
NVMe passwords . . . . . . . . . . . . 29
Supervisor password . . . . . . . . . . . 30
System management password. . . . . . . 30
How to remove the power-on password . . . 31
How to remove the NVMe password . . . . . 31
How to remove the system management
password . . . . . . . . . . . . . . . 31
Power management . . . . . . . . . . . . . 32
Sleep mode . . . . . . . . . . . . . . 32
Hibernation mode . . . . . . . . . . . . 32
Symptom-to-FRU index . . . . . . . . . . . 33
Numeric error codes . . . . . . . . . . . 34
Error messages . . . . . . . . . . . . . 35
Beep errors. . . . . . . . . . . . . . . 35
No-beep symptoms . . . . . . . . . . . 37
LCD-related symptoms . . . . . . . . . . 37
Intermittent problems. . . . . . . . . . . 38
Undetermined problems . . . . . . . . . 38
Chapter 5. Special keys . . . . . . . . 41
Chapter 6. Locations . . . . . . . . . 43
Locating computer controls and connectors . . . 43
Front . . . . . . . . . . . . . . . . . 43
Side view . . . . . . . . . . . . . . . 44
Rear . . . . . . . . . . . . . . . . . 45
Bottom . . . . . . . . . . . . . . . . 45
Locating FRUs and CRUs . . . . . . . . . . . 46
Major FRUs and CRUs . . . . . . . . . . 47
Miscellaneous parts . . . . . . . . . . . 49
Connector and cable guide . . . . . . . . 49
Looking up FRU information . . . . . . . . . . 51
Chapter 7. FRU replacement
notices . . . . . . . . . . . . . . . . . 53
Service tool kit . . . . . . . . . . . . . . . 53
Screw notices . . . . . . . . . . . . . . . 53
Retaining serial numbers . . . . . . . . . . . 54
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . . 54
Retaining the UUID. . . . . . . . . . . . 55
Reading or writing the ECA information . . . . 55
Chapter 8. Removing or replacing a
FRU. . . . . . . . . . . . . . . . . . . 57
General guidelines. . . . . . . . . . . . . . 57
Before servicing the computer . . . . . . . . . 57
Disabling the built-in battery . . . . . . . . 57
Disable Fast Startup and the built-in battery . . 58
Removing the nano-SIM-card and nano-SIM-
card tray . . . . . . . . . . . . . . . . 58
1010 Base cover assembly . . . . . . . . . . 59
1020 2242 M.2 solid-state drive . . . . . . . . 60
1030 Wireless-WAN card (for selected models) . . 60
1040 Thermal fan assembly . . . . . . . . . . 62
1050 Power button board and power button board
cable . . . . . . . . . . . . . . . . . . . 63
1060 Built-in battery . . . . . . . . . . . . . 64
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