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Lenovo ThinkPad T550 W550s

Tags : LenovoThinkPadT550W550s20CJ20CK20E120E2 
Lenovo ThinkPad T550 W550s Hardware Maintenance Manual

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Description

Lenovo ThinkPad T550 W550s Hardware Maintenance Manual
Third Edition (July 2015) - 114 pages

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

ThinkPad T550 Machine types (MT): 20CJ and 20CK

ThinkPad W550s MT: 20E1 and 20E2

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 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 . . . . . . 26
Checking the battery and operational
charging . . . . . . . . . . . . . . . 27
Checking the coin-cell battery . . . . . . . 27
Chapter 4. Related service
information . . . . . . . . . . . . . . 29
Restoring the factory contents by using the
product Recovery Disc Set . . . . . . . . . . 29
Using the Windows recovery programs on the
Windows 8.1 operating system . . . . . . . . 30
Recovery overview for the Windows 10 operating
system. . . . . . . . . . . . . . . . . . 32
Resetting your computer . . . . . . . . . 32
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 . . . . . . . . . . 34
How to remove the power-on password . . . 35
How to remove the hard disk password . . . 35
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 . . . . . . . . . . . 39
LCD-related symptoms . . . . . . . . . 40
Intermittent problems . . . . . . . . . . 40
Undetermined problems . . . . . . . . . 40
Chapter 5. Locations . . . . . . . . . 43
Locating computer controls, connectors, and
indicators. . . . . . . . . . . . . . . . . 43
Front view. . . . . . . . . . . . . . . 43
Left-side view . . . . . . . . . . . . . 44
Bottom view . . . . . . . . . . . . . . 44
Locating FRUs and CRUs . . . . . . . . . . 45
Major FRUs . . . . . . . . . . . . . . 46
LCD FRUs . . . . . . . . . . . . . . 47
Miscellaneous parts and other FRUs . . . . 50
Looking up FRU information . . . . . . . . . 51
Chapter 6. FRU replacement
notices . . . . . . . . . . . . . . . . 53
Common service tools . . . . . . . . . . . 53
Screw notices . . . . . . . . . . . . . . . 53
Retaining serial numbers. . . . . . . . . . . 54
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 54
Retaining the UUID . . . . . . . . . . . 55
Reading or writing the ECA information . . . 56
Chapter 7. Removing or replacing a
FRU . . . . . . . . . . . . . . . . . . 57
General guidelines . . . . . . . . . . . . . 57
Before servicing the computer . . . . . . . . 58
Disabling the built-in battery . . . . . . . 58
Removing the micro SIM card . . . . . . . 58
Removing a major FRU . . . . . . . . . . . 58
1010 Removable battery . . . . . . . . . 59
1020 Base cover assembly . . . . . . . . 59
1030 Keyboard. . . . . . . . . . . . . 61
1040 Storage-drive stabilizer bar, internal
storage drive, hard disk drive cable, and hard
disk drive bracket. . . . . . . . . . . . 66
1050 Memory module . . . . . . . . . . 68
1060 Wireless LAN card . . . . . . . . . 68
1070 Wireless WAN card . . . . . . . . . 69
1080 M.2 solid-state drive . . . . . . . . 70
1090 Coin-cell battery . . . . . . . . . . 71
1110 dc-in bracket and dc-in cable
assembly . . . . . . . . . . . . . . . 72
1120 Built-in battery or dummy battery . . . 73
1130 Thermal fan . . . . . . . . . . . . 75
1140 Speaker assembly . . . . . . . . . 77
1150 Smart card assembly or dummy smart
card . . . . . . . . . . . . . . . . . 78
1160 Fingerprint reader assembly . . . . . 79
1170 Board for the trackpad and TrackPoint
buttons . . . . . . . . . . . . . . . . 80
1180 System board assembly . . . . . . . 81
1190 LCD unit . . . . . . . . . . . . . 83
1210 Power button board . . . . . . . . 85
1220 Keyboard assembly. . . . . . . . . 86
Removing an LCD FRU for models without touch
panel . . . . . . . . . . . . . . . . . . 86
2010 LCD bezel assembly . . . . . . . . 87
2020 LCD panel and LCD cable . . . . . . 87
2030 Hinges and hinge brackets . . . . . . 89
2040 Camera/microphone card . . . . . . 90
2050 LED cable assembly . . . . . . . . 91
2060 Antenna kit and LCD rear cover
assembly . . . . . . . . . . . . . . . 92
Removing an LCD FRU for models with touch
panel . . . . . . . . . . . . . . . . . . 95
3010 LCD front sheet bezel . . . . . . . . 95
3020 LCD panel assembly and LCD cable . . 95
3030 Hinges . . . . . . . . . . . . . . 97
3040 Camera/microphone card . . . . . . 98
3050 Touch sensor card . . . . . . . . . 99
3060 LED cable assembly . . . . . . . . 100
3070 Antenna kit and LCD rear cover
assembly . . . . . . . . . . . . . . . 101
Appendix A. Notices. . . . . . . . . 105
Electronic emissions notices . . . . . . . . . 106
Trademarks . . . . . . . . . . . . . . . . 106



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