Lenovo A540 All In One Lenovo A540/A740 Hardware Maintenance Manual - Page 40

Step 7., Slide the LED panel upward from the bottom with Lenovo logo of the panel.

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Step 7. Slide the LED panel upward from the bottom (with "Lenovo" logo) of the panel. 34 Lenovo A540/A740Hardware Maintenance Manual

Section	Page
Chapter 1. About this manual	7
Important Safety Information	7
Chapter 2. Safety information	9
General safety	9
Electrical safety	9
Safety inspection guide	11
Handling electrostatic discharge-sensitive devices	11
Grounding requirements	12
Safety notices	12
Chapter 3. General information	15
Specifications	15
Chapter 4. General Checkout	17
Chapter 5. Using the Setup Utility	19
Starting the Lenovo BIOS Setup Utility program	19
Viewing and changing settings	19
Using passwords	19
Enabling or disabling a device	21
Selecting a startup device	22
Exiting the Lenovo BIOS Setup Utility program	23
Chapter 6. Symptom-to-FRU Index	25
Hard disk drive boot error	25
Power Supply Problems	25
POST error codes	26
Undetermined problems	26
Chapter 7. Replacing hardware	27
General information	27
Replacing the keyboard and mouse	28
Replacing the power cord or power adapter	28
Removing the base cover	29
Replacing the hard disk drive	30
Replacing a memory module	32
Replacing the system fan	33
Replacing the heat-sink	34
Replacing the speaker system	35
Replacing the motherboard	36
Removing the hinge from the chassis	37
Removing the rear cover	38
Replacing the Transform board	41
Replacing the Wi-Fi card	42
Replacing the power switch board	43
Replacing the NFC module	44
Replacing the camera	45
Replacing the LED panel	46
A540 FRU lists	48
A740 FRU lists	52
Chapter 8. General information	59

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Step 7.

Slide the LED panel upward from the bottom (with “Lenovo” logo) of the panel.

Lenovo A540/A740Hardware Maintenance Manual