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Manuals and User Guides for Lenovo 21DL. We have
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Lenovo 21DL manual available for free PDF download: Hardware Maintenance Manual
Lenovo 21DL Hardware Maintenance Manual (98 pages)
Brand:
Lenovo
| Category:
Laptop
| Size: 32.07 MB
Table of Contents
Table of Contents
3
About this Manual
5
Chapter 1. Safety Information
7
General Safety
7
Electrical Safety
7
Safety Inspection Guide
8
Handling Devices that Are Sensitive to Electrostatic Discharge
9
Grounding Requirements
10
Safety Notices (Multilingual Translations)
10
Chapter 2. General Checkout
27
What to Do First
27
CRU List
28
Chapter 3. Identifying Frus (Crus)
29
Locate Frus and Crus
29
Chapter 4. Removing a FRU or CRU
39
Service Tools
39
General Guidelines
39
Removal Procedure for Thinkbook 14 G4 IAP and Thinkbook 14 G4 ABA
40
Remove the Lower Case
40
Remove the Battery Pack
41
Remove the 2242 Solid-State Drive (SSD)
42
Remove the 2280 Solid-State Drive (SSD) and Thermalpad
42
Remove the 2 Nd Solid-State Drive (SSD)
44
Remove the 2 Nd Solid-State Drive (SSD) Bracket
44
Remove the Wi-Fi Card
45
Remove the Heat Sink (for Thinkbook 14 G4 IAP and Thinkbook 15 G4 IAP Only)
46
Remove the Fan (for Thinkbook 14 G4 IAP and Thinkbook 15 G4 IAP Only)
47
Remove the Thermal Module (for Thinkbook 14 G4 ABA and Thinkbook 15 G4 ABA Only)
48
Remove the Memory Module
49
Remove the CMOS Battery
50
Remove the I/O Bracket (Left)
50
Remove the I/O Bracket (Right)
51
Remove the I\/O Board with Cable
52
Remove the I/O Board with Cable
52
Make Sure the Following Frus (or Crus) Have Been Removed
53
Remove the Lower Case
53
Remove the Power Board with Cable
53
Remove the Battery Pack
55
Remove the CMOS Battery
55
Remove the Fan
55
Remove the Fingerprint Board with Cable
55
Remove the Lens Light Guide
56
Remove the Speakers
57
Remove the System Board
57
Remove the LCD Module
59
Remove the Upper Case (with Keyboard and Touchpad)
60
Disassemble the LCD Module
61
Remove the Camera
66
Removal Procedure for Thinkbook 15 G4 IAP and Thinkbook 15 G4 ABA
68
Remove the Lower Case
68
Make Sure the Following FRU (CRU) Has Been Removed
69
Remove the 2242 Solid-State Drive (SSD)
69
Remove the Battery Pack
69
Remove the Lower Case
69
Step 1. Disconnect the Battery Pack Cable from the System Board
69
Remove the Solid-State Drive (SSD)
70
Remove the 2 Nd Solid-State Drive (SSD)
71
Remove the 2 Nd Solid-State Drive (SSD) Bracket
72
Remove the Fan
72
Remove the Wi-Fi Card
72
Remove the Memory Module
74
Remove the CMOS Battery
75
Remove the I/O Bracket (Left)
76
Remove the I/O Bracket (Right)
76
Remove the I/O Board with Cable
77
Remove the Power Board with Cable
79
Remove the Fingerprint Board with Cable
80
Remove the Lens Light Guide
80
Remove the Speakers
81
Remove the System Board
81
Remove the LCD Module
83
Disassemble the LCD Module
84
Remove the Upper Case (with Keyboard and Touchpad)
84
Remove the LCD Bezel
85
Make Sure the Following Frus (Crus) Have Been Removed
87
Removable Tape
87
Remove the LCD Panel
87
Replacement Parts
87
Remove the EDP Cable
88
Remove the LCD Panel
88
Remove the Microphone Rubbers
88
Remove the Camera
89
Appendix A. Label Locations
91
Trademarks
95
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