Table of Contents
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Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 2
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
information . . . . . . . . . . . . . . . 21
Strategy for replacing FRUs . . . . . . . . . .
drive . . . . . . . . . . . . . . . . .
board . . . . . . . . . . . . . . . . .
How to use error message . . . . . . . . .
and standard models. . . . . . . . . . . . .
Product definition . . . . . . . . . . . .
FRU identification . . . . . . . . . . . .
Chapter 3. General checkout . . . . . 25
What to do first . . . . . . . . . . . . . . .
Checkout guide . . . . . . . . . . . . . . .
Diagnosing problems . . . . . . . . . . .
Quick test programs . . . . . . . . . . .
UEFI diagnostic program . . . . . . . . .
Bootable diagnostic programs . . . . . . .
Power system checkout . . . . . . . . . . .
Checking the ac power adapter . . . . . . .
charging . . . . . . . . . . . . . . . .
Checking the coin-cell battery . . . . . . .
information . . . . . . . . . . . . . . . 31
Reset or restore Windows . . . . . . . . . . .
Passwords. . . . . . . . . . . . . . . . .
Power-on password . . . . . . . . . . .
Nvme password . . . . . . . . . . . . .
Supervisor password . . . . . . . . . . .
System management password. . . . . . .
How to remove the Nvme password . . . . .
password . . . . . . . . . . . . . . .
© Copyright Lenovo 2021, 2023
Power management . . . . . . . . . . . . .
Sleep mode . . . . . . . . . . . . . .
Hibernation mode . . . . . . . . . . . .
Symptom-to-FRU index . . . . . . . . . . .
Numeric error codes . . . . . . . . . . .
Error messages . . . . . . . . . . . . .
Beep symptoms . . . . . . . . . . . . .
No-beep symptoms . . . . . . . . . . .
LCD-related symptoms . . . . . . . . . .
Intermittent problems . . . . . . . . . . .
21
modes . . . . . . . . . . . . . . . . . 43
21
shortcuts . . . . . . . . . . . . . . . . 45
22
22
Chapter 7. Locations . . . . . . . . . 47
22
indicators . . . . . . . . . . . . . . . . .
22
Front view . . . . . . . . . . . . . . .
23
Side view . . . . . . . . . . . . . . .
Bottom view . . . . . . . . . . . . . .
Locating FRUs and CRUs . . . . . . . . . . .
25
26
26
9)
. . . . . . . . . . . . . . . . . .
27
Miscellaneous parts and other FRUs . . . . .
27
Connector and cable guide . . . . . . . .
27
Looking up FRU information . . . . . . . . . .
28
29
notices . . . . . . . . . . . . . . . . . 61
29
Service tool kit . . . . . . . . . . . . . . .
29
Screw notices . . . . . . . . . . . . . . .
Retaining serial numbers . . . . . . . . . . .
unit . . . . . . . . . . . . . . . . . .
31
Retaining the UUID. . . . . . . . . . . .
31
31
31
32
FRU. . . . . . . . . . . . . . . . . . . 65
32
General guidelines. . . . . . . . . . . . . .
32
Before servicing the computer . . . . . . . . .
33
Removing external devices . . . . . . . .
Disabling the built-in battery . . . . . . . .
34
34
34
35
35
36
37
37
39
39
40
. . . . . . . . .
40
47
47
50
51
51
53
55
57
57
60
61
61
62
62
63
64
65
66
66
66
i
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