Lenovo C540 Touch All-in-One- Manuals

Chapter 2. Safety information This chapter contains the safety information that you need to be familiar with before servicing a computer. General safety Follow these rules to ensure general safety: • Keep the areas around the computer clear and clean during and after maintenance. • When lifting any ...

• Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people while handling the part. • Wear a grounded wrist strap against your skin to eliminate static on your body. • Prevent the part from touching your clothing. Most clothing is insulative a...

To Connect To Disconnect 1. Turn everything OFF. 2. First, attach all cables to devices. 3. Attach signal cables to connectors. 4. Attach power cords to outlet. 5. Turn device ON. 1. Turn everything OFF. 2. First, remove power cords from outlets. 3. Remove signal cables from connectors. 4. Remove al...

Chapter 3. General information This chapter provides general information that applies to all computer models covered by this manual. Specifications This section lists the physical specifications for your computer. This section lists the physical specifications for your computer. Type Lenovo C540 Thi...

Chapter 4. General Checkout Attention: The drives in the computer you are servicing might have been rearranged or the drive startup sequence may have been changed. Be extremely careful during write operations such as copying, saving, orformatting. Data or programs can be overwritten if you select an...

Chapter 5. Using the Setup Utility The Setup Utility program is used to view and change the configuration settings of your computer, regardlessof which operating system you are using. However, the operating system settings might override any similarsettings in the Setup Utility program. Starting the...

To set a Power-On Password, do the following: 1. Start the Lenovo BIOS Setup Utility program (See ”Starting the Lenovo BIOS Setup Utility program” on page 13.) 2. From the Security menu, select Set Power-On Password and press the Enter key. 3. The password dialog box will be displayed. Type the pass...

Select ATA Device Setup , press the Enter key, then select SATA Mode . Select Audio Setup , press the Enter key, then select Onboard Audio Controller . Select Network Setup , press the Enter key, then select Onboard Ethernet Support or LAN Boot Agent . 4. Select Disabled or Enabled and press the Ent...

a. If you do not want to save the settings, select Discard changes and Exit from the menu. b. If you have changed these settings and want to return to the default settings, select Load Optimal Defaults from the menu. Exiting the Lenovo BIOS Setup Utility program After you finish viewing or changing ...

Chapter 6. Symptom-to-FRU Index The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first.Always begin with Chapter 4, “General Checkout,” on page 11. This index can also be used to help youdecide which FRUs to have available when servicing a computer. ...

POST error codes Each time you turn the computer on, it performs a series of tests to check that the system is operatingcorrectly and that certain options are set. This series of tests is called the Power-On Self-Test , or POST . POST does the following: • Checks some basic motherboard operations • ...

Chapter 7. Locating connectors, controls and components This section provides illustrations to help locate the various connectors, controls and components of thecomputer. Font view The following illustration shows the location of controls and components on the front of the computer. Attention: Be ca...

Left and right view The following illustration shows the location of connectors, controls and components on the left and rightside of the computer. 1 2 3 6 5 4 7 8 1. USB connector 5. Memory card reader 2. Headphone connector 6. Power button 3. Microphone connector 7. Optical drive eject button 4. U...

Rear view The following illustration shows the location of connectors and components on the rear of the computer. 1 2 3 7 6 5 4 8 9 1. TV tuner connector (selected models only, 2 connectorsfor Japan) 6. USB connector 2. TV tuner connector (selected models only, 2 connectorsfor Japan) 7. HDMI-out con...

Hardware components The following illustration shows the components that make up your computer. 1 2 3 6 7 8 9 1 0 1 1 1 4 1 8 1 6 1 7 1 5 1 9 2 0 2 1 2 2 4 5 1 2 1 3 1. Computer stand 12. Wi-Fi card 2. Foot cover 13. TV-Tuner card 3. Middle cover 14. System fan 4. EMI cover 15. Heat-sink 5. Motherbo...

Identifying parts on the motherboard The motherboard (sometimes called the planar or system board) is the main circuit board in your computer.It provides basic computing functions and supports a variety of devices that are factory-installed or thatyou can install later. The following illustration sh...

Chapter 8. Replacing hardware Attention: Do not remove the computer cover or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain copies of the Safety and WarrantyGuide, go to the Support Web site at: ht...

Replacing the keyboard and mouse Note: Your keyboard will be connected to a USB connector at either side or at the rear of the computer. To replace the keyboard: Step 1. Remove any media (disks, CDs, or memory cards) from the drives, shut down the computer, andturn off all attached devices. Step 2. ...

Removing the stand base Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to p...

Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the touch screen from scratchesor other damage. Step 1. Remove any media (disks, CDs, or memory cards) from the drives, s...

Replacing the hard disk drive Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft clot...

Step 7. Push the lock pins outward to release the hard disk drive from the bracket. Step 8. To install the new hard disk drive: a. Line up the new hard disk drive with the bracket and secure it with the pins. b. Slide the hard disk drive and bracket back into position. Step 9. Reattach the foot cove...

Step 10. Separate the cover from the defective optical drive. Step 11. To install the new optical drive: a. Align the new optical drive with the cover, and then push the cover back into position. b. Screw the metal bracket back onto the new optical drive. c. Slide the new optical drive into the driv...

Step 7. To reattach the stand holder: a. Align the holes on the stand holder with mounting holes on the chassis, place the standholder back into position. b. Secure the stand holder to the chassis with the four screws. Step 8. Line up the foot cover with mounting holes on the back of the computer, t...

Step 9. To reattach the middle cover: a. Line up the middle cover with chassis, then place the middle cover back. b. Secure the middle cover to the chassis with the seven screws. Step 10. Reattach the stand holder, optical drive, foot cover and stand base. Replacing the converter board Note: Turn of...

Step 9. Disconnect the two cables from the converter, and then remove the screw that secures theconverter board to the chassis. Step 10. Lift up then slide out the converter board to remove it. Step 11. To install the new converter board: a. Line up the holes on the new converter board with the moun...

Step 9. Disconnect the four cables from the converter 1 2 3 4 , and then remove the three screws that secure the touch control board to the chassis. Step 10. Lift up the touch control board to remove it. 1 2 3 4 Step 11. To install the new touch control board: a. Line up the holes on the new touch c...

Step 9. Remove the seven screws that secure the EMI cover to the chassis, and then lift it up. Step 10. To reattach the EMI cover: a. Line up the holes on the EMI cover with mounting holes on the chassis, then place EMI coverback into position. b. Secure the EMI cover to the chassis with seven screw...

Step 10. Remove the three screws that secure the rear I/O module to the motherboard and lift it up gently. Step 11. Disconnect the power cable from the motherboard and the TV antenna cable(s) from the TV tuner card. Step 12. Remove the hexagonal nut that secure the TV-Tuner antenna connector to the ...

Step 8. Remove the middle cover. Refer to “Removing the middle cover”. Step 9. Remove the EMI cover. Refer to “Removing the EMI cover”. Step 10. Disconnect the antenna cable from the TV-Tuner card. Step 11. Remove the screw that secures the TV-Tuner card to the motherboard. Step 12. Pull the TV-Tune...

Step 10. Disconnect the antenna cables from the WLAN card. Step 11. Remove the screw that secures the WLAN card to the motherboard. Step 12. Lift up the WLAN card to remove it from the socket. Step 13. To install the new WLAN card: a. Insert the notched end of the WLAN card into the card port on the...

Step 10. Disconnect the speaker cables from the connector on the motherboard. 1 Step 11. Remove the four rubber screws that secure the speaker system to the chassis 2 , then lift up the speaker system to remove it. 3 1 2 2 2 3 3 Step 12. To install the new speaker system: a. Place the new speaker sy...

Step 11. Remove the three screws that secure the system fan to the chassis. Step 12. Disconnect the power cable from the motherboard. Step 13. Lift up the system fan to remove it. Step 14. To install the new system fan: a. Place the new system fan into position, and then secure it to the chassis wit...

Step 11. Remove the eight screws that secure the heat-sink to the motherboard and chassis. Step 12. Remove the heat-sink by lifting it up. Attention: Place the heat-sink upside down on a flat surface to prevent thermal grease from contaminating other components. Attention: Use an alcohol pad to wipe...

Step 9. Remove the EMI cover. Refer to “Removing the EMI cover”. Step 10. Remove the heat-sink. Refer to “Replacing the heat sink”. Step 11. Remove the screw that secures camera to the front bezel. Step 12. Lift up the camera and disconnect the data cable from the camera. 1 2 Step 13. Remove the two...

Replacing the front control board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth...

Step 14. Reattach the speaker system, EMI cover, middle cover, optical drive, stand holder, foot cover and stand base. Replacing the power switch board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer fac...

c. Connect the power cable to the new power switch board. Step 13. Reattach the EMI cover, middle cover, optical drive, stand holder, foot cover and stand base. Replacing the motherboard Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may b...

Step 17. Remove the five screws that secure the motherboard to the chassis and lift the motherboard up to remove it. Step 18. To install the new motherboard: a. Line up the holes on the new motherboard with the mounting holes chassis and place the newmotherboard into position. b. Use the screws to s...

Chapter 10. General information This chapter provides general information that applies to all computer models covered by this manual. Additional Service Information This chapter provides additional information that the service representative might find helpful. Power management Power management redu...