Lenovo C40-05 Lenovo C40 Series All-In-One Computer Hardware Maintenance Manua - Page 36

Step 9. Lift up the middle cover as shown to remove

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Step 9. Lift up the middle cover as shown to remove it. 30 Lenovo C40 Series All-In-One Computer Hardware 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 adapter	28
Removing the stand base	29
Removing the foot cover	30
Replacing the memory module	31
Replacing the hard disk drive	32
Removing the stand holder	33
Removing the middle cover	34
Replacing the optical drive	37
Replacing the power switch board	39
Replacing the converter board	40
Removing the EMI cover	41
Replacing the system fan	42
Replacing the heat-sink	43
Replacing the speaker system	45
Replacing the Wi-Fi card	46
Removing the rear deco	47
Replacing the motherboard	49
Replacing the camera	50
Replacing the LED panel module	52
Chapter 8. FRU lists	55
Chapter 9. FRU lists	65
Chapter 10. General information	75

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Step 9. Lift up the middle cover as shown to remove it.

Lenovo C40 Series All-In-One Computer Hardware Maintenance Manual