This manual contains service and reference information for IdeaCentre B345-B545 All-In-One computers listed 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 Safety Information.
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– Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
– Send another person to get medical aid. Safety inspection guide The intent of this inspection guide is to assist you in identifying potentially unsafe conditions on these products. Each machine, as it was designed and built, had required safety items installed to protect users and service personnel from injury.
• Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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To Connect To Disconnect 1. Turn everything OFF. 1. Turn everything OFF. 2. First, attach all cables to devices. 2. First, remove power cords from outlet. 3. Attach signal cables to connectors. 3. Remove signal cables from connectors. 4. Attach power cords to outlet. 4.
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To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on top of rack-mounted devices. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
This chapter provides general information that applies to all machine types supported by this publication. Specifications This section lists the physical specifications for your computer. This section lists the physical specifications for your computer. Type IdeaCentre B345-B545 This section lists the physical specifications. Environment Air temperature: Operating: 10°...
1. If your computer is already on when you start this procedure, shut down the operating system and turn off the computer. 2. Press and hold the F1 key then turn on the computer. When the Lenovo BIOS Setup Utility program is displayed, release the F1 key.
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5. Select Save changes and Exit from the menu. Power-On Password When a Power-On Password is set, you cannot start the Lenovo BIOS Setup Utility program until a valid password is typed from the keyboard. Setting, changing, or deleting a Power-On Password Note: A password can be any combination of letters and numbers up to 16 character (a-z, and 0-9).
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.
Selecting or changing the startup device sequence To view or permanently change the configured startup device sequence, 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 Lenovo BIOS Setup Utility program main menu, select the Startup option.
Exiting the Lenovo BIOS Setup Utility program After you finish viewing or changing settings, press the Esc key to return to the Lenovo BIOS Setup Utility program main menu. You might have to press the Esc key several times. Do one of the following: •...
3. Power-on the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or component. If all devices and components have been removed and the problem continues, replace the system board. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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The following illustration shows the location of connectors, controls and components on the left and right side of the computer. 5. Microphone port 1. Optical drive 2. TV buttons (selected models only) 6. USB connector 7. Memory card reader 3. USB connector 4. Headphone port 8. Power button IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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Rear view The following illustration shows the location of connectors and components on the rear of the computer. 1. Ethernet port 5. AV-IN connectors (selected models only) 2. USB connectors 6. TV tuner ports (selected models only) 3. HDMI-OUT connector 7.
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21. System fans 9. Glass 22. Camera 10. Rear I/O module 23. Hardware TV tuner board 11. Power supply 24. Hardware TV switch board 12. Motherboard 25. Touch module 13. Hard disk drive 26. Bluetooth module IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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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 that you can install later. The following illustration shows the location of connectors and components on the front of the motherboard.
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The following illustration shows the locations of parts on the digital hardware TV board. (DVB-T type) 1. LVDS Connector 5. Tuner Board Connector 2. Converter Connector 6. Fan Connector 3. TV Function Connector 7. Debug Port 4. Mother Board Connector IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 Warranty Guide, go to the Support Web site at: http://consumersupport.lenovo.com. Note: Use only parts provided by Lenovo.
Remove any media (diskettes, CDs, DVDs, or memory cards) from the drives, shut down your operating system, and turn off all attached devices and the computer. Step 2. Locate the connector for the power cord. Refer to “Rear view”. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 protect the computer screen from scratches or other damage.
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: For this procedure, it helps to place the computer face-down on a soft flat surface. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the screen surface from scratches or other damage.
Step 1. Remove any media (disks, CDs, DVDs or memory cards) from the drives, shut down the operating system, 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, input/output (I/O) cables, and any other cables that are connected to the computer.
Attention: 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 computer screen from scratches or other damage.
Step 5. Push then slide the hard disk drive and bracket upward and out of the chassis as shown. Step 6. Push the pins and release the hard disk drive from the bracket. Step 7. Install the new hard disk drive as follows: Line up the new hard disk drive with the bracket and secure it with the pins.
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Remove the two screws that secure the optical drive to the metal bracket. Step 8. Use a small flat head screwdriver to press and push out the pins that secure the cover to the disk. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 protect the computer screen from scratches or other damage.
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Step 7. Remove the eight screws that secure the middle cover to the chassis. Step 8. Push up the middle cover upward with two hands to remove it from pins. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 protect the computer screen from scratches or other damage.
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Step 8. Push the pins to release the converter. Step 9. Disconnect the two cables from the converter board. Step 10. Lift up the converter board to remove it. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 protect the computer screen from scratches or other damage.
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 protect the computer screen from scratches or other damage.
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 protect the computer screen from scratches or other damage.
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 protect the computer screen from scratches or other damage.
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 protect the computer screen from scratches or other damage.
Step 12. Reattach the EMI cover, middle cover, optical drive, computer stand and the rear cover. Removing the power supply Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 computer screen from scratches or other damage.
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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 computer screen from scratches or other damage.
Replacing the CPU Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the CPU Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices.
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Step 14. Holding the sides of the microprocessor with your fingers, position the microprocessor so that the notches on the microprocessor are aligned with the tabs in the microprocessor socket. Important: To avoid damaging the microprocessor contacts, keep the microprocessor completely level while installing it into the socket. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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 protect the computer screen from scratches or other damage.
Step 15. Reattach the EMI cover, middle cover, optical drive, computer stand and the rear cover. Replacing the Wi-Fi card Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the Wi-Fi card: IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, 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, input/output (I/O) cables, and any other cables that are connected to the computer.
Step 6. Remove the optical drive. Refer to “Replacing the optical drive”. Step 7. Remove the middle cover. Refer to “Removing the middle cover”. Step 8. Remove the EMI cover. Refer to “Removing the EMI cover”. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
Step 9. Disconnect the speaker cable from the connectors on motherboard. Step 10. Detach the speaker system from the rubber screws as shown. Step 11. To install the new speaker system: Secure the new speaker system to the chassis with the rubber screws. Connect the new speaker cable to motherboard.
Remove the middle cover. Refer to “Removing the middle cover”. Step 8. Remove the EMI cover. Refer to “Removing the EMI cover”. Step 9. Remove the rear I/O module. Refer to “Replacing the rear I/O module”. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
Step 10. Disconnect the three cables from the scalar board. Step 11. Remove the five screws that secure the scalar board to the motherboard and chassis, then lift it up to remove it. Step 12. To install the new scalar board: Line up the holes on the new scalar board with the mounting holes and secure it with five screws.
Step 21. Reattach the EMI cover, middle cover, optical drive, computer stand and the rear cover. Replacing the LED panel Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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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 computer screen from scratches or other damage.
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Step 19. Remove the four screws secure the chassis to the LED panel bracket. Step 20. Lift up the chassis gently as shown. Step 21. Remove the converter cable from the connector on the LED panel. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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Step 22. Push the pins that secure the power switch board to the front bezel, and then lift out the power switch board as shown. Step 23. To install the new the LED panel: Install the power switch board to the new front bezel. Connect the converter cable to the connector on the new LED panel, and attach the converter cable to the LED panel properly using double faced adhesive tape.
Remove the EMI cover. Refer to “Removing the EMI cover”. Step 10. Remove the camera. Refer to “Replacing the camera”. Step 11. Remove the Bluetooth module. Refer to “Replacing the Bluetooth module”. Step 12. Detach the Wi-Fi antenna cables from the front bezel. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...
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Step 13. Disconnect the LVDS cable from the connector on the LED panel. Step 14. Disconnect the converter cable from the connector on the converter. Step 15. Disconnect the front function board cable from the connector on the motherboard. Step 16. Disconnect the front indicator board cable from the connector on the motherboard. Step 17.
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Secure the new LED panel to the chassis with four screws. Secure the chassis to the front bezel with the eight screws. Reinstall the camera and the Bluetooth module. Step 24. Reattach the EMI cover, middle cover, optical drive, computer stand and the rear cover. IdeaCentre B345–B545 All-In-OneHardware Maintenance Manual...