Lenovo ThinkPad T420s 4170 Manuals

Manuals and User Guides for Lenovo ThinkPad T420s 4170. We have 1 Lenovo ThinkPad T420s 4170 manual available for free PDF download: Hardware Maintenance Manual

Lenovo ThinkPad T420s 4170 Hardware Maintenance Manual

Lenovo ThinkPad T420s 4170 Hardware Maintenance Manual (150 pages)

Lenovo ThinkPad T420 4177: Supplementary Guide

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

Table of Contents

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

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