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Lenovo ThinkPad Yoga 12 (English) Hardware Maintenance Manual - ThinkPad Yoga - Page 4

AppendixA.Notices, AppendixB.Abbreviation table .. 105, Windows home-button board - 5 digitizer

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Page 4 highlights

Before servicing the computer 58 Disabling the built-in battery 58 1010 Lenovo OneLink connector cover . . . . . 58 1020 Base cover assembly 58 1030 Speaker assembly 60 1040 Battery 60 1050 Hard disk drive or solid-state drive . . . . 61 1060 Wireless-LAN card 65 1070 M.2 solid-state drive 67 1080 Hard-disk-drive/buttons card and hard-disk-drive/buttons cable 68 1090 P sensor 69 1100 System board 70 1110 Coin-cell battery 74 1120 Thermal fan assembly 75 1130 Keyboard assembly 77 1140 Keyboard bezel assembly and the LCD unit . 83 2010 LCD bezel assembly 85 2020 Windows home-button board 86 2030 LCD hinges 87 2040 LCD panel 93 2050 Camera/microphone assembly 95 2060 Sensor card 97 2070 LCD cable assembly 97 2080 Camera/microphone cable or camera/digitizer/microphone cable 98 2090 Wireless-LAN antenna kit and LCD rear-cover assembly 100 Appendix A. Notices 103 Electronic emissions notices 104 Trademarks 104 Appendix B. Abbreviation table . . . 105 ii Hardware Maintenance Manual

Section	Page
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. Important service information	25
Strategy for replacing FRUs	25
Strategy for replacing a hard disk drive or a solid-state drive	25
Important notice for replacing a system board	26
How to use error message	26
Strategy for replacing FRUs for CTO, special bid model, and standard models	26
Product definition	26
FRU identification	27
Chapter 3. General checkout	29
What to do first	29
Checkout guide	30
Lenovo Solution Center	30
Quick test programs	30
UEFI diagnostic program	31
Bootable diagnostic programs	32
Power system checkout	33
Checking the ac power adapter	33
Checking the built-in battery and operational charging	33
Checking the coin-cell battery	34
Chapter 4. Related service information	35
Restoring the factory contents by using the product Recovery Disc Set	35
Using the Windows recovery programs on the Windows 8.1 operating system	36
Refreshing your computer	36
Resetting your computer to the factory default settings	36
Using the advanced startup options	37
Recovering your operating system if Windows 8.1 fails to start	37
Creating and using recovery media	37
Passwords	38
Power-on password	38
Hard disk password	39
Supervisor password	39
How to remove the power-on password	39
How to remove the hard disk password	40
Power management	40
Screen blank mode (for the Windows 7 operating system only)	40
Sleep mode	40
Hibernation mode	41
Symptom-to-FRU index	41
Numeric error codes	42
Error messages	43
Beep symptoms	43
No-beep symptoms	44
LCD-related symptoms	44
Intermittent problems	45
Undetermined problems	45
Chapter 5. Status indicators	47
Chapter 6. Function keys	49
Chapter 7. Locations	51
Locating computer controls, connectors, and indicators	51
Front view	51
Rear view	52
Bottom view	53
Locating FRUs and CRUs	53
Major FRUs	54
LCD FRUs	56
Miscellaneous parts and other FRUs	57
Looking up FRU information	58
Chapter 8. FRU replacement notices	59
Screw notices	59
Retaining serial numbers	60
Restoring the serial number of the system unit	60
Retaining the UUID	61
Chapter 9. Removing or replacing a FRU	63
General guidelines	63
Before servicing the computer	64
Disabling the built-in battery	64
1010 Lenovo OneLink connector cover	64
1020 Base cover assembly	64
1030 Speaker assembly	66
1040 Battery	66
1050 Hard disk drive or solid-state drive	67
1060 Wireless-LAN card	71
1070 M.2 solid-state drive	73
1080 Hard-disk-drive/buttons card and hard-disk-drive/buttons cable	74
1090 P sensor	75
1100 System board	76
1110 Coin-cell battery	80
1120 Thermal fan assembly	81
1130 Keyboard assembly	83
1140 Keyboard bezel assembly and the LCD unit	89
2010 LCD bezel assembly	91
2020 Windows home-button board	92
2030 LCD hinges	93
2040 LCD panel	99
2050 Camera/microphone assembly	101
2060 Sensor card	103
2070 LCD cable assembly	103
2080 Camera/microphone cable or camera/digitizer/microphone cable	104
2090 Wireless-LAN antenna kit and LCD rear-cover assembly	106
Appendix A. Notices	109
Electronic emissions notices	110
Trademarks	110