Lenovo ThinkPad T420s 4171 Computer Manuals

Manuals and User Guides for Lenovo ThinkPad T420s 4171 Computer. We have 2 Lenovo ThinkPad T420s 4171 Computer manuals available for free PDF download: Hardware Maintenance Manual, Reference Manual

Lenovo ThinkPad T420s 4171 Hardware Maintenance Manual (150 pages)

Lenovo ThinkPad T420 4177: Supplementary Guide

Brand: Lenovo | Category: Laptop | Size: 12.32 MB

Table of Contents
5
About this Manual

7
Chapter 1. Safety Information

9
Chapter 2. Important Service Information

39
- Strategy for Replacing Frus
  39
- Strategy for Replacing Frus for CTO, CMV, and GAV
  40
  - Product Definition
    40
  - FRU Identification for CTO, CMV, and GAV Products
    41
Chapter 3. General Checkout

43
- What to Do First
  43
- Checkout Guide
  44
  - Diagnostics Using PC-Doctor for DOS
    44
  - Testing the Computer
    45
  - Lenovo Thinkvantage Toolbox
    47
  - FRU Tests
    47
- Power System Checkout
  49
Chapter 4. Related Service Information

53
- Restoring the Factory Contents by Using Product Recovery Discs
  53
- Restoring the Factory Contents by Using Recovery Disc Set
  53
- Passwords
  55
  - Power-On Password
    55
  - Hard-Disk Password
    55
  - Supervisor Password
    55
  - How to Remove the Power-On Password
    55
  - How to Remove the Hard-Disk Password
    56
- Power Management
  56
  - Screen Blank Mode
    56
  - Sleep (Standby) Mode
    57
  - Hibernation Mode
    57
- Symptom-To-FRU Index
  58
  - Numeric Error Codes
    59
  - Error Messages
    60
  - Beep Symptoms
    60
  - No-Beep Symptoms
    61
  - LCD-Related Symptoms
    61
  - Intermittent Problems
    62
  - Undetermined Problems
    62
Chapter 5. Status Indicators

63
Chapter 6. Fn Key Combinations

67
Chapter 7. FRU Replacement Notices

69
- Screw Notices
  69
- Retaining Serial Numbers
  70
Chapter 8. Removing and Replacing a FRU

73
1130 Bluetooth Daughter Card (BDC-3.0)

98
- Removal Steps of DC-In Sub Card
  98
1140 Bluetooth-Wireless Radio Switch FPC

99
- 1150 System Board, Fan Assembly, 34-MM Expresscard Reader, and Base Cover
  101
  - Color Torque
    103
  - Color Silver
    105
- Chapter 8 . Removing and Replacing a FRU
  105
- 2010 LCD Bezel Assembly
  106
- 2020 LCD Panel
  108
- 2030 Integrated Camera, Microphone, or Hall Sensor Card
  110
- 2040 LED Sub Card
  111
- 2050 LCD Cable
  112
- 2060 Hinge Kit
  113
- 2070 LED Cable
  115
- 2080 Antenna Kit and LCD Rear Cover Assembly
  116
Chapter 9. Locations

119
- Front View
  119
- Rear View
  120
- Bottom View
  120
Chapter 10. Parts List

121
- Overall
  122
  - Overall
    127
- LCD Frus
  133
- Keyboard
  137
- Miscellaneous Parts
  138
- AC Adapters
  139
- Power Cords
  139
- Recovery Discs
  140
- Common Service Tools
  146
Appendix A. Notices

147
- Electronic Emissions Notices
  148
- Trademarks
  148

Lenovo ThinkPad T420s 4171 Reference Manual (2 pages)

Lenovo ThinkPad T400s 2815: Reference Guide

Brand: Lenovo | Category: Laptop | Size: 0.27 MB

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Lenovo ThinkPad T420s 4171 Computer Manuals

Lenovo ThinkPad T420s 4171 Hardware Maintenance Manual (150 pages)

Table of Contents

About this Manual

Chapter 1. Safety Information

Chapter 2. Important Service Information

Chapter 3. General Checkout

Chapter 4. Related Service Information

Chapter 5. Status Indicators

Chapter 6. Fn Key Combinations

Chapter 7. FRU Replacement Notices

Chapter 8. Removing and Replacing a FRU

Step Screw (Quantity)

1130 Bluetooth Daughter Card (BDC-3.0)

1140 Bluetooth-Wireless Radio Switch FPC

Chapter 9. Locations

Chapter 10. Parts List

Appendix A. Notices

Lenovo ThinkPad T420s 4171 Reference Manual (2 pages)

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