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Lenovo ThinkPad L450

Tags : LenovoThinkPadL45020DS20DT 
Lenovo ThinkPad L450 Hardware Maintenance Manual

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Description

Lenovo ThinkPad L450 Hardware Maintenance Manual
Second Edition (August 2015) - 112 pages

This manual contains service and reference information for the following ThinkPad® products.

ThinkPad L450 Machine Type (MT) 20DS and 20DT

Use this manual along with the advanced diagnostic tests to troubleshoot problems.


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. Important service
information . . . . . . . . . . . . . . 19
Strategy for replacing FRUs . . . . . . . . . 19
Strategy for replacing a hard disk drive or a
solid-state drive . . . . . . . . . . . . 19
Important notice for replacing a system
board . . . . . . . . . . . . . . . . 20
How to use error message . . . . . . . . 20
Strategy for replacing FRUs for CTO, special-bid,
and standard models . . . . . . . . . . . . 20
Product definition. . . . . . . . . . . . 20
FRU identification. . . . . . . . . . . . 20
Chapter 3. General checkout . . . . . 23
What to do first . . . . . . . . . . . . . . 23
Checkout guide . . . . . . . . . . . . . . 24
Lenovo Solution Center . . . . . . . . . 24
Quick test programs. . . . . . . . . . . 24
UEFI diagnostic program . . . . . . . . . 25
Bootable diagnostic programs. . . . . . . 25
Power system checkout . . . . . . . . . . . 26
Checking the ac power adapter . . . . . . 27
Checking the external battery pack and the
operational charging . . . . . . . . . . 27
Checking the coin-cell battery . . . . . . . 28
Chapter 4. Related service
information . . . . . . . . . . . . . . 29
Restoring the factory contents by using the
Recovery Disc Set . . . . . . . . . . . . . 29
Recovery overview for the Windows 8.1 operating
system. . . . . . . . . . . . . . . . . . 30
Refreshing your computer . . . . . . . . 30
Resetting your computer to the factory default
settings. . . . . . . . . . . . . . . . 30
Using the advanced startup options . . . . 31
Recovering your operating system if Windows
8.1 fails to start. . . . . . . . . . . . . 31
Creating and using recovery media . . . . . 31
Recovery overview for the Windows 10 operating
system. . . . . . . . . . . . . . . . . . 32
Resetting your computer . . . . . . . . . 33
Using advanced startup options . . . . . . 33
Recovering your operating system if Windows
10 fails to start . . . . . . . . . . . . . 33
Creating and using a recovery USB drive . . 33
Passwords . . . . . . . . . . . . . . . . 34
Power-on password . . . . . . . . . . . 34
Hard disk password . . . . . . . . . . . 34
Supervisor password . . . . . . . . . . 35
How to remove the power-on password . . . 35
How to remove the hard disk password . . . 36
Power management . . . . . . . . . . . . 36
Screen blank mode (for the Windows 7
operating system only) . . . . . . . . . . 36
Sleep mode . . . . . . . . . . . . . . 36
Hibernation mode . . . . . . . . . . . 37
Symptom-to-FRU index . . . . . . . . . . . 37
Numeric error codes . . . . . . . . . . 38
Error messages . . . . . . . . . . . . 39
Beep symptoms . . . . . . . . . . . . 39
No-beep symptoms . . . . . . . . . . . 40
LCD-related symptoms . . . . . . . . . 40
Intermittent problems . . . . . . . . . . 40
Undetermined problems . . . . . . . . . 41
Chapter 5. Status indicators . . . . . 43
Chapter 6. Function keys . . . . . . . 45
Chapter 7. Locations . . . . . . . . . 47
Locating computer controls, connectors, and
indicators. . . . . . . . . . . . . . . . . 47
Front view. . . . . . . . . . . . . . . 47
Rear view . . . . . . . . . . . . . . . 48
Bottom view . . . . . . . . . . . . . . 48
Locating FRUs and CRUs . . . . . . . . . . 49
Major FRUs and CRUs. . . . . . . . . . 50
LCD FRUs . . . . . . . . . . . . . . 52
Miscellaneous parts and other FRUs . . . . 53
Looking up FRU information . . . . . . . . . 53
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . 55
Screw notices . . . . . . . . . . . . . . . 55
Retaining serial numbers. . . . . . . . . . . 56
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 56
Retaining the UUID . . . . . . . . . . . 57
Reading or writing the ECA information . . . 57
Chapter 9. Removing or replacing a
FRU . . . . . . . . . . . . . . . . . . 59
General guidelines . . . . . . . . . . . . . 59
1010 SIM-card tray . . . . . . . . . . . . . 60
1020 External battery pack . . . . . . . . . . 60
1030 Keyboard rubbers . . . . . . . . . . . 61
1040 Keyboard . . . . . . . . . . . . . . 62
1050 Base cover assembly . . . . . . . . . . 67
1060 Docking dummy door. . . . . . . . . . 69
1070 SIM-card dummy cover . . . . . . . . . 70
1080 Hard disk drive or solid-state drive . . . . 70
1090 Wireless-LAN card . . . . . . . . . . . 72
1100 Wireless-WAN card . . . . . . . . . . 74
1110 Memory module . . . . . . . . . . . . 77
1120 Speaker assembly . . . . . . . . . . . 78
1130 Coin-cell battery. . . . . . . . . . . . 80
1140 LCD unit . . . . . . . . . . . . . . . 80
1150 dc-in cable . . . . . . . . . . . . . . 82
1160 Thermal fan assembly . . . . . . . . . 84
1170 I/O bracket . . . . . . . . . . . . . . 85
1180 Smart-card bracket . . . . . . . . . . 87
1190 System board and subcards . . . . . . . 88
1200 Smart card and smart-card cable, or
smart-card dummy door . . . . . . . . . . . 91
1210 Keyboard bezel assembly . . . . . . . . 92
2010 LCD-bezel sheet. . . . . . . . . . . . 93
2020 LCD panel . . . . . . . . . . . . . . 93
2030 Camera/microphone module, camera
module, or microphone module . . . . . . . . 95
2040 LCD hinges. . . . . . . . . . . . . . 96
2050 LCD cable . . . . . . . . . . . . . . 97
2060 Wireless-LAN/WAN antenna assembly
or wireless-LAN antenna, and LCD rear-cover
assembly . . . . . . . . . . . . . . . . . 98
Appendix A. Notices. . . . . . . . . 101
Electronic emissions notices . . . . . . . . . 102
Trademarks . . . . . . . . . . . . . . . . 102
Appendix B. Abbreviation table . . . 103



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