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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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1. Fan connectors

15. Card reader

2. Camera connector

16. USB connector

3. Touch control board connector

17. Microphone jack

4. Front function board connector

18. Headphone jack

5. Optical drive SATA connector

19. USB connector

6. Hard disk drive SATA connector

20. Memory slots

7. Scalar board connector

21. CPU Socket

8. B-CAS Connector

22. Power supply connector

9. Wi-Fi card connector

23. Battery

10. TV-Tuner card connector

24. Power supply connector

11. Rear I/O connector

25. Optical drive power connector

12. Power switch board connector

26. Hard disk drive power connector

13. Speaker connector

27. Bluetooth connector

14. Front LED indicator board connector

Chapter 7

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Locating connectors, controls and components

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Содержание IdeaCentre B345

Страница 1: ...IdeaCentre B345 B545 All In One Hardware Maintenance Manual ideaideaideaCentreidea Machine Types 10098 2567 B345 10100 4749 B545 ...

Страница 2: ......

Страница 3: ...IdeaCentre B345 B545 All In One Hardware Maintenance Manual Machine Types 10098 2567 B345 10100 4749 B545 ...

Страница 4: ...right Lenovo 2012 LIMITED AND RESTRICTED RIGHTS NOTICE If data or software are delivered pursuant a General Services Administration GSA contract use reproduction or disclosure is subject to restrictions set forth in Contract No GS 35F 05925 ...

Страница 5: ...s and components 21 Chapter 8 Replacing hardware 27 General information 27 Replacing the keyboard and mouse 28 Replacing the power cord or power adapter 28 Removing the computer cover 29 Removing the computer stand 30 Replacing a memory module 31 Replacing the hard disk drive 32 Replacing the optical drive 33 Removing the middle cover 35 Replacing the converter board 37 Removing the EMI cover 39 R...

Страница 6: ...iv IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 7: ...ion and danger statements in this book before performing any of the instructions Veuillez lire toutes les consignes de type DANGER et ATTENTION du présent document avant d exécuter les instructions Lesen Sie unbedingt alle Hinweise vom Typ ACHTUNG oder VORSICHT in dieser Dokumentation bevor Sie irgendwelche Vorgänge durchführen Leggere le istruzioni introdotte da ATTENZIONE e PERICOLO presenti nel...

Страница 8: ...2 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 9: ...l case away from walk areas so that other people will not trip over it Do not wear loose clothing that can be trapped in the moving parts of a machine Ensure that your sleeves are fastened or rolled up above your elbows If your hair is long fasten it Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip approximately 8 centimeters 3 inches from the end Do ...

Страница 10: ...our pocket or behind your back Remember There must be a complete circuit to cause electrical shock By observing the above rule you may prevent a current from passing through your body When using a tester set the controls correctly and use the approved probe leads and accessories for that tester Stand on suitable rubber mats obtained locally if necessary to insulate you from grounds such as metal f...

Страница 11: ...for a A third wire ground connector in good condition Use a meter to measure third wire ground continuity for 0 1 ohm or less between the external ground pin and frame ground b The power cord should be the appropriate type as specified in the parts listings c Insulation must not be frayed or worn 4 Remove the cover 5 Check for any obvious alterations Use good judgment as to the safety of any alter...

Страница 12: ...ired for operator safety and correct system function Proper grounding of the electrical outlet can be verified by a certified electrician Safety notices The caution and danger safety notices in this section are provided in the the language of English DANGER Electrical current from power telephone and communication cables is hazardous To avoid a shock hazard Do not connect or disconnect any cables ...

Страница 13: ... not Throw or immerse into water Heat to more than 100 C 212 F Repair or disassemble Dispose of the battery as required by local ordinances or regulations CAUTION When laser products such as CD ROMs DVD ROM drives fiber optic devices or transmitters are installed note the following Do not remove the covers Removing the covers of the laser product could result in exposure to hazardous laser radiati...

Страница 14: ...urn off the electrical current supplied to the device The device also might have more than one power cord To remove all electrical current from the device ensure that all power cords are disconnected from the power source 1 2 CAUTION Do not place any object weighing more than 82 kg 180 lbs on top of rack mounted devices 8 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 15: ...ons 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 to 35 C Transit 20 to 55 C Humidity Operating 35 to 80 Transit 20 to 90 40 C Altitude 86KPa to 106KPa Electrical input Input voltage 90V 264V AC Input frequency 47Hz 63Hz Copyright Lenovo 2012 9 ...

Страница 16: ...10 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 17: ...dure to help determine the cause of the problem 1 Power off the computer and all external devices 2 Check all cables and power cords 3 Set all display controls to the middle position 4 Power on all external devices 5 Power on the computer Look for displayed error codes Look for readable instructions or a main menu on the display If you did not receive the correct response proceed to step 6 If you ...

Страница 18: ...12 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 19: ...ings see Starting the Setup Utility program You must use the keyboard when using the Lenovo BIOS Setup Utility menu The keys used to perform various tasks are displayed on the bottom of each screen Using passwords You can use the Lenovo BIOS Setup Utility program to set passwords to prevent unauthorized persons from gaining access to your computer and data See Starting the Setup Utility program Th...

Страница 20: ...dministrator 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 Administrator Password and press the Enter key 3 The password dialog box will be displayed Type the current password then press Enter key 4 Type the new password then press Enter key Re type the password to confirm th...

Страница 21: ...rd Enter blank fields for each new password line item A setup notice will display that changes have been saved 4 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 5 Select Save changes and Exit from the menu Enabling or disabling a device The Devices options is used to enable or disable user access to the following devices USB Functions Select whether to enable or dis...

Страница 22: ...enu does not display using these steps repeatedly press and release the F12 key rather than keeping it pressed when turning on the computer 3 Use and arrows to select the desired startup device from the Startup Device Menu and press the Enter key to begin Note Selecting a startup device from the Startup Device Menu does not permanently change the startup sequence Selecting or changing the startup ...

Страница 23: ...ress the Esc key several times Do one of the following If you want to save the new settings select Save changes and Exit from the menu When the Save reset window shows select the Yes button and then press the Enter key to exit the Lenovo BIOS Setup Utility program If you do not want to save the settings select Discard changes and Exit from the menu When the Reset Without Saving window shows select...

Страница 24: ...18 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 25: ...d disk drive boot error A hard disk drive boot error can have the following causes Error FRU Action The startup drive is not included in the boot sequence in configuration Check the configuration and ensure the startup drive is in the boot sequence No operating system installed on the boot drive Install an operating system on the boot drive The boot sector on the startup drive is corrupted The dri...

Страница 26: ...Startup option to Enabled The BIOS then ignores the missing keyboard during POST Reboot and Select proper Boot device or Insert Boot Media in selected Boot device The BIOS was unable to find a suitable boot device Make sure the boot drive is properly connected to the computer Make sure you have bootable media in the boot device Undetermined problems 1 Power off the computer 2 Remove or disconnect ...

Страница 27: ...ir vents on the computer Blocked air vents can cause overheating 1 2 3 7 8 9 10 11 12 13 14 6 5 4 1 Built in microphone 8 Volume down 2 Built in camera 9 Volume up 3 Built in IR Emitter do not block selected models only 10 Brightness down 4 Hard disk drive indicator 11 Brightness up 5 Bluetooth status indicator 12 Novo vision button 6 Wi Fi status indicator 13 PC mode HDMI in AV in switch 7 TV ind...

Страница 28: ... and components on the left and right side of the computer 1 2 3 4 5 6 7 8 1 Optical drive 5 Microphone port 2 TV buttons selected models only 6 USB connector 3 USB connector 7 Memory card reader 4 Headphone port 8 Power button 22 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 29: ...he computer 1 7 3 4 6 2 5 8 8 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 Power connector 4 HDMI IN connector selected models only 8 Air vents do not block Chapter 7 Locating connectors controls and components 23 ...

Страница 30: ...TV Scale Board 3 Middle cover 16 WLAN card 4 Front LED indicator board 17 Speakers 5 EMI cover 18 Converter 6 Chassis 19 Heat sink 7 LED panel 20 Infra red module 8 Front bezel 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 24 IdeaCentre B345 B545 All In...

Страница 31: ... reader 2 Camera connector 16 USB connector 3 Touch control board connector 17 Microphone jack 4 Front function board connector 18 Headphone jack 5 Optical drive SATA connector 19 USB connector 6 Hard disk drive SATA connector 20 Memory slots 7 Scalar board connector 21 CPU Socket 8 B CAS Connector 22 Power supply connector 9 Wi Fi card connector 23 Battery 10 TV Tuner card connector 24 Power supp...

Страница 32: ...ns of parts on the digital hardware TV board ATS C type 1 2 3 6 7 4 5 1 LVDS Connector 5 Tuner Board Connector 2 Converter Connector 6 Debug Port 3 TV Function Connector 7 Fan Connector 4 Mother Board Connector The following illustration shows the locations of parts on the digital hardware TV board DVB T type 1 2 3 6 7 4 5 1 LVDS Connector 5 Tuner Board Connector 2 Converter Connector 6 Fan Connec...

Страница 33: ...afety and Warranty Guide go to the Support Web site at http consumersupport lenovo com Note Use only parts provided by Lenovo General information Pre disassembly instructions Before proceeding with the disassembly procedure make sure that you do the following 1 Turn off the power to the system and all peripherals 2 Unplug all power and signal cables from the computer 3 Place the system on a flat s...

Страница 34: ...lp with locating the various connectors Note Your keyboard will be connected to a USB connector on one side or at the rear of the computer Step 4 Disconnect the defective keyboard cable from the computer and connect the new keyboard cable to the same connector Note The mouse can be replaced using the same method Replacing the power cord or power adapter Attention Turn off the computer and wait 3 t...

Страница 35: ...urn 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 To remove the computer cover Chapter 8 Replacing hardware 29 ...

Страница 36: ... various connectors Step 4 Remove the two cover pieces by sliding them in opposite directions as shown Step 5 To reinstall the computer cover a Line up the cover pieces with the chassis then slide them back Removing the computer stand 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 ...

Страница 37: ... and right view and Rear view for help with locating the various connectors Step 4 Push the stand lock upward to unlock it and then slide the stand out as show 1 2 3 1 2 3 Step 5 To reinstall the computer stand a Line up the computer stand with the mounting slots in the chassis and slide it back into position 1 b Lift up the rear of the computer stand until you hear a pa sound indicating the stand...

Страница 38: ...the new memory module with the memory socket then insert it and push down on the top edge Make sure the latches lock the memory module in place Step 7 Reattach the rear cover 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 Attention It may be helpful to place the computer face down on a soft flat surface for this p...

Страница 39: ... Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover To replace the optical drive 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 in...

Страница 40: ...2 1 Step 6 Push a small iron stick paper clip into the small hole on the optical drive cover so that the disk springs out as shown Step 7 Remove the two screws that secure the optical drive to the metal bracket 1 Step 8 Use a small flat head screwdriver to press and push out the pins that secure the cover to the disk 2 3 34 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 41: ... blanket towel or other soft cloth to protect the computer screen from scratches or other damage To remove the middle cover 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 p...

Страница 42: ...eight screws that secure the middle cover to the chassis 1 1 1 1 1 1 1 1 1 Step 8 Push up the middle cover upward with two hands to remove it from pins 2 3 2 36 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 43: ...protect the computer screen from scratches or other damage To replace the converter board 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...

Страница 44: ...he pins to release the converter 1 1 1 1 Step 9 Disconnect the two cables from the converter board 2 Step 10 Lift up the converter board to remove it 2 2 38 IdeaCentre B345 B545 All In OneHardware Maintenance Manual ...

Страница 45: ... 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 Refer to Left and right view and Rear view for help with locating the various con...

Страница 46: ...lace the camera 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 Refer to Left and...

Страница 47: ...es or other damage To replace the Bluetooth module 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 connecte...

Страница 48: ...age To replace the battery 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 Refer ...

Страница 49: ...r other damage To replace the system fan 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 c...

Страница 50: ...ystem fan with mounting holes on the motherboard b Secure the system fan with five screws c Connect the fan power cable to the connectors on the motherboard 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 44 IdeaCentre B345 B545...

Страница 51: ...r to Removing the computer stand 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 Step 9 Remove the two screws that secure the power supply connector to the metal bracket 1 Step 10 Disconnect the two power cables from the motherboard 2 Step 11 Remove the...

Страница 52: ...r cover Refer to Removing the rear cover Step 5 Remove the computer stand Refer to Removing the computer stand 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 Step 9 Remove the system fans Refer to Replacing the system fans Step 10 Remove the eight scre...

Страница 53: ...ng the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Remove the computer stand Refer to Removing the computer stand 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 Step 9 Remove the system fans Refer to Replacin...

Страница 54: ...rocessor with your fingers remove the protective cover that protects the gold contacts on the new microprocessor 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...

Страница 55: ...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 To replace the rear I O module 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 a...

Страница 56: ...w that secure the rear I O module to the metal bracket 1 Step 13 Lift up the rear I O module to remove it from the metal bracket 1 Step 14 To install the new rear I O module a Line the new I O module with metal bracket then secure it with the screw b Reattach the TV antenna cable to the rear I O module secure it with the two screws c Line the new I O module up with the chassis then secure it with ...

Страница 57: ...to the motherboard Step 10 Disconnect the antenna cables from the Wi Fi card Step 11 Lift up the Wi Fi card upward to remove it from the socket Step 12 To install the new Wi Fi card a Insert the new Wi Fi card to the socket and secure it with the screw b Connect the antenna cables to the new Wi Fi card Step 13 Reattach the EMI cover middle cover optical drive computer stand and the rear cover Repl...

Страница 58: ...al drive computer stand and the rear cover Replacing the speaker system Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover To replace the speaker system 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 ou...

Страница 59: ... 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 Refer to Left and right view and Rear view for help with locat...

Страница 60: ...ny 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 Refer to Left and right view and Rear view for h...

Страница 61: ...s 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 Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Remove the computer stand Refer to Removing the computer...

Страница 62: ...the screw d Insert the notched end of the Wi Fi card into the card port on the new motherboard and secure it with the screw e Install the CPU to the new motherboard and secure the CPU in the socket close the CPU retainer and lock it into position with the small handle f Install the memory module s to the new motherboard g Install the heat sink to the new motherboard h Install the system fans to th...

Страница 63: ...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 rear cover Refer to Removing the rear cover Step 5 Remove the computer stand Refer to Removing the computer stand Step 6 Remove the memory modules Refer to Replacing a memory module Step 7 Remove the optical drive Refer to Replacing the ...

Страница 64: ...cator board cable from the connector on the motherboard Step 17 Disconnect the power switch board cable from the connector on the motherboard Step 18 Remove the eight screws that secure the chassis to the front bezel 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...

Страница 65: ...ct the converter cable to the converter e Connect the front function board cable front indicator board cable and the power switch board cable to the connectors on the motherboard f Reattach the Wi Fi antenna cables back to the front bezel g Secure the new LED panel to the chassis with four screws h Secure the chassis to the front bezel with the eight screws i Reinstall the camera and the Bluetooth...

Страница 66: ... 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 rear cover Refer to Removing the rear cover Step 5 Remove the computer stand Refer to Removing the computer stand Step 6 Remove the memory modules Refer to Replacing a memory module Step 7 Remove the optical drive Refer to Replacing the optical drive...

Страница 67: ...erboard Step 17 Disconnect the power switch board cable from the connector on the motherboard Step 18 Remove the eight screws that secure the chassis to the front bezel 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 Step 22 Push the pins that secure the pow...

Страница 68: ...e new LED panel and then place the chassis into position d Connect the converter cable to the converter e Connect the front function board cable front indicator board cable and the power switch board cable to the connectors on the motherboard f Reattach the Wi Fi antenna cables back to the front bezel g Secure the new LED panel to the chassis with four screws h Secure the chassis to the front beze...

Страница 69: ...IOS As this computer has an ACPI BIOS system the operating system is allowed to control the power management features of the computer and the settings for Advanced Power Management APM BIOS mode is ignored Not all operating systems support ACPI BIOS mode Automatic Power On features The Automatic Power On features within the Power Management menu allow you to enable and disable features that turn o...

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