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Lenovo ThinkPad E450 (English) Hardware Maintenance Manual - ThinkPad E450, E4 - Page 85

Loosen the screws., Remove the system board together with the thermal fan assembly.

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Page 85 highlights

Loosen the screws. 10 Remove the system board together with the thermal fan assembly. 11 Chapter 9. Removing or replacing a FRU 79

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, a hybrid 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	31
Power system checkout	32
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 Recovery Disc Set	35
Recovery overview for the Windows 7 operating system	36
Creating and using a recovery media	37
Performing backup and recovery operations	37
Using the Rescue and Recovery workspace	38
Creating and using a rescue medium	39
Reinstalling preinstalled applications and device drivers	40
Solving recovery problems	41
Recovery overview for the Windows 8.1 operating system	41
Refreshing your computer	41
Resetting your computer to the factory default settings	42
Using the advanced startup options	42
Recovering your operating system if Windows 8.1 fails to start	42
Creating and using recovery media	43
Passwords	44
Power-on password	44
Hard disk password	44
Supervisor password	44
How to remove the power-on password	45
How to remove the hard disk password	45
Power management	46
Screen blank mode (for the Windows 7 operating system only)	46
Sleep mode	46
Hibernation mode	46
Symptom-to-FRU index	47
Numeric error codes	48
Error messages	49
Beep symptoms	49
No-beep symptoms	50
LCD-related symptoms	50
Intermittent problems	50
Undetermined problems	51
Chapter 5. Status indicators	53
Chapter 6. Function keys	55
Chapter 7. Locations	57
Locating computer controls, connectors, and indicators	57
Front view	57
Bottom view	58
Locating FRUs and CRUs	59
Major FRUs	60
LCD FRUs	62
Miscellaneous parts and other FRUs	62
Looking up FRU information	63
Chapter 8. FRU replacement notices	65
Screw notices	65
Retaining serial numbers	66
Restoring the serial number of the system unit	66
Retaining the UUID	67
Chapter 9. Removing or replacing a FRU	69
General guidelines	69
Before servicing the computer	70
Disconnect the battery	70
1010 Lenovo OneLink connector cover	70
1020 DIMM door	71
1030 Internal storage drive	71
1040 Memory module	72
1050 Wireless LAN card	73
1060 Coin-cell battery	74
1070 Keyboard	75
1080 Keyboard bezel assembly	76
1090 Media card reader	78
1100 USB/audio card	79
1110 ThinkPad-logo-LED card	79
1120 System board, dc-in support bracket, and thermal fan assembly	80
1130 Battery pack	87
1140 Speaker assembly	89
1150 LCD unit	90
1160 Hinge support bracket, wireless LAN antennas assembly, and base cover assembly	91
2010 LCD bezel assembly	94
2020 LCD module	95
2030 Hinge kit	95
2040 Integrated camera and microphone combo card	96
2050 LCD cable assembly and LCD rear cover assembly	97
Appendix A. Notices	99
Electronic emissions notices	100
Trademarks	100

Match case Limit results 1 per page

Loosen the screws.

Remove the system board together with the thermal fan assembly.

Chapter 9

Removing or replacing a FRU