Page 5 - Contents; iii
Contents Chapter 1. About this manual . . . . . . 1 Important Safety Information . . . . . . . . . . 1 Chapter 2. Safety information . . . . . . 3 General safety . . . . . . . . . . . . . . . . 3 Electrical safety . . . . . . . . . . . . . . . 3 Safety inspection guide . . . . . . . . . . . . 5 Hand...
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iv Lenovo C355/C455 All-In-One ComputerHardware Maintenance Manual
Page 7 - Chapter 1. About this manual; Important Safety Information
Chapter 1. About this manual This manual contains service and reference information for Lenovo C355 and C455 All-In-One computerslisted on the cover. It is intended only for trained servicers who are familiar with Lenovo computer products. Before servicing a Lenovo product, be sure to read the Safet...
Page 9 - Chapter 2. Safety information; General safety
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 ...
Page 12 - Grounding requirements; DANGER
• 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...
Page 13 - • Throw into or immerse in water
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...
Page 15 - Chapter 3. General information; Specifications
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 C355/C45...
Page 17 - Chapter 4. General Checkout
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...
Page 19 - Chapter 5. Using the Setup Utility; Starting the Lenovo BIOS Setup Utility program; Password considerations
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...
Page 21 - Enabling or disabling a device
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...
Page 22 - Selecting a startup device
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...
Page 23 - Exiting the Lenovo BIOS Setup Utility program
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 ...
Page 25 - Hard disk drive boot error; Power Supply Problems
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. ...
Page 26 - POST error codes; Undetermined problems
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 • ...
Page 27 - Chapter 7. Locating connectors, controls and components; Font view
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...
Page 28 - Left and right view
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...
Page 29 - Rear view
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...
Page 30 - Hardware components
Hardware components The following illustration shows the components that make up your computer. 1 2 3 7 8 9 1 0 1 1 1 2 1 4 1 3 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 5 6 4 1. Optical disk drive bracket 12. Front bezel 2. Optical disk drive 13. Memory module 3. Hard disk drive bracket 14. Wi-Fi card 4. Har...
Page 31 - Identifying parts on the motherboard
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...
Page 33 - Chapter 8. Replacing hardware; General information; Pre-disassembly instructions
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...
Page 34 - Replacing the keyboard and mouse; To replace the keyboard:; Replacing the adapter
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. ...
Page 36 - Removing the stand base; Removing the foot cover
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...
Page 37 - Replacing a memory module
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...
Page 39 - Replacing the hard disk drive
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...
Page 40 - Replacing the optical drive
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...
Page 42 - Removing the stand holder; To remove the stand holder:
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...
Page 43 - Removing the middle cover; To remove the middle cover:
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...
Page 44 - Replacing the converter board; To replace the converter board:
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...
Page 45 - Replacing the camera; To replace the camera:
Step 9. Disconnect the two cables from the converter, and then remove the two screws that secure theconverter board to the chassis. Step 10. Lift up 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 mounting holes ...
Page 46 - Removing the EMI cover; To replace the EMI cover
Step 10. Remove the two screws that secure camera to the front bezel. 1 Step 11. Lift up the camera 2 and disconnect the data cable from the camera. 3 Step 12. To install the new camera: a. Connect the data cable to the new camera. b. Line up the holes in the new camera with the mounting holes on th...
Page 47 - Replacing the rear I/O module; To replace the rear I/O module
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)cables, and any other cables that are connected to the computer. Refer to “Left and right view”and “Rear view” for help with locating the various connectors. Step 4. Remove the stand base. Refer to “...
Page 49 - Replacing the speaker system; To replace the speaker system:
Replacing the speaker system 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 to p...
Page 50 - Replacing the system fan; To replace the system fan
Replacing the system fan 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 to prote...
Page 51 - Replacing the heat-sink
Replacing the heat-sink 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 to protec...
Page 52 - Replacing the TV tuner card; To replace the TV tuner card
c. Use the sealing tape to seal the gap in-between the system fan and heat-sink. Step 14. Reattach the EMI cover, middle cover, optical drive, stand holder, foot cover and stand base. Replacing the TV tuner card Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing ...
Page 54 - Replacing the WLAN card; To replace the WLAN card:
Step 11. Remove the screw that secures the TV-Tuner card to the motherboard. 1 Step 12. Pull the TV-Tuner card upward to remove it from the card port on the motherboard. 2 Step 13. To install the new TV-Tuner card: a. Insert the notched end of the TV-Tuner card into the card port on the motherboard....
Page 56 - Replacing the front control board; To replace the front control board:
Step 11. Remove the screw that secures the WLAN card to the motherboard. 1 Step 12. Lift up the WLAN card to remove it from the socket. 2 Step 13. To install the new WLAN card: a. Insert the notched end of the WLAN card into the card port on the motherboard. b. Secure new the WLAN card to the mother...
Page 57 - Replacing the power switch board; To replace the power switch board
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)cables, and any other cables that are connected to the computer. Refer to “Left and right view”and “Rear view” for help with locating the various connectors. Step 4. Remove the stand base. Refer to “...
Page 58 - Replacing the motherboard
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operatingsystem, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer. This includes power cords, ...
Page 59 - To replace the motherboard:
To replace the motherboard: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operatingsystem, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer....
Page 60 - Replacing the LED panel; To replace the LED panel:
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...
Page 83 - Chapter 11. General information; Additional Service Information; Power management
Chapter 11. 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...
