Table Of Contents - Lenovo ThinkPad L13 Yoga Gen 2 Hardware Maintenance 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 . . . . . . . . . .
Strategy for replacing a hard disk drive or a
solid-state drive . . . . . . . . . . . . .
Important notice for replacing a system
board . . . . . . . . . . . . . . . . .
How to use error codes . . . . . . . . . .
Strategy for replacing FRUs for CTO, special-bid,
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 . . . . . . .
Checking operational charging . . . . . . .
Checking the built-in battery . . . . . . . .
Checking the coin-cell battery . . . . . . .
Chapter 4. Related service
information . . . . . . . . . . . . . . . 31
Recovery overview for the Windows 10 operating
system . . . . . . . . . . . . . . . . . .
Resetting your computer . . . . . . . . .
Using advanced startup options . . . . . .
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . .
Creating and using a recovery USB drive . . .
Passwords. . . . . . . . . . . . . . . . .
Power-on password . . . . . . . . . . .
Hard disk password . . . . . . . . . . .
© Copyright Lenovo 2020
Supervisor password . . . . . . . . . . .
System management password. . . . . . .
How to remove the power-on password . . .
How to remove the hard disk password. . . .
How to remove the system management
password . . . . . . . . . . . . . . .
Power management . . . . . . . . . . . . .
Sleep mode . . . . . . . . . . . . . .
Hibernation mode . . . . . . . . . . . .
Symptom-to-FRU index . . . . . . . . . . .
Numeric error codes . . . . . . . . . . .
Error messages . . . . . . . . . . . . .
Beep errors. . . . . . . . . . . . . . .
21
No-beep symptoms . . . . . . . . . . .
LCD-related symptoms . . . . . . . . . .
21
Intermittent problems . . . . . . . . . . .
22 Undetermined problems
22
Chapter 5. Use the keyboard
shortcuts . . . . . . . . . . . . . . . . 44
22
22
Chapter 6. Locations . . . . . . . . . 47
22
Locating computer controls, connectors, and
indicators . . . . . . . . . . . . . . . . .
Front . . . . . . . . . . . . . . . . .
25
Base . . . . . . . . . . . . . . . . .
26
Left . . . . . . . . . . . . . . . . . .
26
Right . . . . . . . . . . . . . . . . .
26
Bottom . . . . . . . . . . . . . . . .
27
Locating FRUs and CRUs . . . . . . . . . . .
27
Major FRUs and CRUs . . . . . . . . . .
28
LCD FRUs and CRUs . . . . . . . . . . .
28
Miscellaneous parts . . . . . . . . . . .
29
Connector and cable guide . . . . . . . .
29
Looking up FRU information . . . . . . . . . .
30
Chapter 7. FRU replacement
notices . . . . . . . . . . . . . . . . . 61
Service tool kit . . . . . . . . . . . . . . .
Screw notices . . . . . . . . . . . . . . .
31
Retaining serial numbers . . . . . . . . . . .
31
Restoring the serial number of the system
31
unit . . . . . . . . . . . . . . . . . .
Retaining the UUID. . . . . . . . . . . .
32
32
Chapter 8. Removing or replacing a
32
FRU. . . . . . . . . . . . . . . . . . . 65
33
General guidelines. . . . . . . . . . . . . .
33
33
33
34
34
35
36
36
36
37
37
39
39
41
41
42
. . . . . . . . . 42
47
47
48
49
50
51
52
53
55
57
58
60
61
62
62
63
63
65
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