Table Of Contents - Lenovo ThinkBook 13s Gen 4 Hardware Maintenance Manual

Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 2
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Chapter 2. General checkout . . . . . 21
What to do first . . . . . . . . . . . . . . .
CRU list . . . . . . . . . . . . . . . . . .
Chapter 3. Identifying FRUs
(CRUs) . . . . . . . . . . . . . . . . . 23
Locate FRUs and CRUs
Chapter 4. Removing a FRU or
CRU . . . . . . . . . . . . . . . . . . 27
Service tools . . . . . . . . . . . . . . . .
General guidelines . . . . . . . . . . . . . .
Remove the lower case . . . . . . . . . . . .
Remove the battery pack . . . . . . . . . . .
Remove the solid-state drive (SSD) module . . . .
Remove the speakers . . . . . . . . . . . .
Remove the I/O bracket. . . . . . . . . . . .
© Copyright Lenovo 2022
. . . . . . . . . . .
Remove the touchpad cable . . . . . . . . . .
Remove the touchpad . . . . . . . . . . . .
Remove the heat sink . . . . . . . . . . . .
Remove the fans . . . . . . . . . . . . . .
Remove the I/O board . . . . . . . . . . . .
Remove the fingerprint board module . . . . . .
Remove the system board and the I/O board
cable . . . . . . . . . . . . . . . . . . .
Use a Golden Key U1 tool to flash-write key id
information . . . . . . . . . . . . . . .
Remove the LCD module . . . . . . . . . . .
Remove the upper case. . . . . . . . . . . .
21
Disassemble the LCD module . . . . . . . . .
22
Remove the hinge cover. . . . . . . . . .
Remove the LCD bezel . . . . . . . . . .
Remove the hinges. . . . . . . . . . . .
Remove the LCD panel . . . . . . . . . .
23
Remove the camera privacy shutter . . . . .
Remove the microphone rubbers . . . . . .
Remove the camera cable . . . . . . . . .
Remove the camera board . . . . . . . . .
27
Remove the sensor board (with cable) . . . .
27
Remove the LCD cover . . . . . . . . . .
28
29
Appendix A. Label locations. . . . . . 55
30
Trademarks . . . . . . . . . . . . . . . .
31
31
33
34
35
36
37
41
42
44
45
46
47
47
47
48
49
50
51
52
52
53
54
lvii
i