Page 5 - Contents
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...
Page 7 - Chapter 1. About this manual; Important Safety Information
Chapter 1. About this manual This manual contains service and reference information for Lenovo N300-308 All-In-One computers listed onthe 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 Safety Inf...
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
• 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 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 N300-308...
Page 17 - Chapter 4. Replacing hardware; General information
Chapter 4. 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 18 - Replacing the keyboard and mouse; Removing the rear cover
Replacing the keyboard and mouse To replace the keyboard and mouse: 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. Disconne...
Page 19 - Replacing the battery
Step 4. The rear cover is pinned to the front bezel, use a flat head screw driver work around the edgeto loose it. Step 5. Lift the rear cover from the bottom edge as shown. Step 6. Disconnect the function board cable, then separate the rear cover from the front bezel. Step 7. To reattach the rear c...
Page 20 - Replacing a memory module
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 21 - Replacing the hard disk drive
Step 5. Push out the latches on both sides of the memory socket to release the memory module. Gentlypull the memory module upward to remove it from its socket. Step 6. To install the new memory module: a. Align the new memory module with the memory socket, then insert it and push down onthe top edge...
Page 22 - Replacing the heat-sink
Step 5. Remove the screw that secures the hard disk drive to the chassis. Step 6. Disconnect the hard disk drive from the connector. Step 7. Remove the 4 screws that secure the hard disk drive to the bracket. Step 8. To install the new hard disk drive: a. Attach the bracket pieces to the new hard di...
Page 23 - Replacing the Wi-Fi card
Step 5. Remove the 4 screws that secure the heat-sink module to the motherboard. Step 6. Lift up the heat-sink to remove it. Attention: Place the heat-sink upside down on a flat surface to prevent thermal grease contaminating other components. Step 7. To install the new heat-sink: a. Use an alcohol ...
Page 24 - Replacing the speaker system
Step 5. Disconnect the antenna and data cables from the Wi-Fi card. 1 Step 6. Remove the screw that secures the Wi-Fi card to the motherboard. 2 Step 7. Pull the Wi-Fi card upward to remove it from the socket. 3 Step 8. To install the new Wi-Fi card: a. Insert the new Wi-Fi card into the card port a...
Page 25 - Replacing the front indicator board
Step 5. Disconnect the speaker cable from the connector on motherboard. Step 6. Detach the speaker system from the rubber screws, then lift up the speaker to remove it. Step 7. To install the new speaker system: a. Secure the new speaker system to the chassis with the rubber screws. b. Connect the n...
Page 26 - Replacing the motherboard
Step 5. Disconnect the data cable from the front indicator board. Step 6. Remove the 2 screws that secure the front indicator board to the rear cover. Step 7. Lift up the front indicator board to remove it. Step 8. To install the new front indicator board: a. Line up the front indicator board with t...
Page 27 - Replacing the computer stand
Step 10. Remove the six screws that secure the motherboard to the chassis and lift it up to remove it. Step 11. To install the new motherboard: a. Line up the holes on the new motherboard with the mounting holes on the rear cover andsecure the new motherboard with the six screws. b. Insert the notch...
Page 28 - Replacing the camera
Step 6. Remove the 6 screws that secure the computer stand to the rear cover. 1 Step 7. Slide out the system fan supporting bracket. Step 8. Slide out the computer stand as shown. 2 1 2 Step 9. To install the new computer stand: a. Line up the computer stand with the mounting hole on the rear cover ...
Page 29 - Replacing the LED panel module
Step 5. Remove the 2 screws that secure the camera to the front bezel. 1 Step 6. Lift up the camera 2 and disconnect the data cable from the camera. 3 1 1 3 2 Step 7. 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 hole...
