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Lenovo B50–35 Hardware Maintenance Manual
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Lenovo B50–35 Hardware Maintenance Manual

All-in-one computer
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Lenovo B50–35 All-In-One Computer
Hardware Maintenance Manual
Machine Types: F0AV [B50-35]

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Summary of Contents for Lenovo B50–35

  • Page 1 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual Machine Types: F0AV [B50-35]...
  • Page 3 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual Machine Types: F0AV [B50-35]...
  • Page 4 Third Edition (September 2014)12th © Copyright Lenovo 2014. 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...

  • Page 5: Table Of Contents

    Selecting a startup device ..Removing the rear deco ... Exiting the Lenovo BIOS Setup Utility program . . Replacing the camera ... .
  • Page 6 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 7: Chapter 1. About This Manual

    This manual contains service and reference information for Lenovo B50–35 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.
  • Page 8 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 9: Chapter 2. Safety Information

    Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect any attached power cords, telecommunication cables, network cables, and modem cables before you open the computer covers, unless instructed otherwise in the installation and configuration procedures. © Copyright Lenovo 2014...
  • Page 10 – 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. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 11: Safety Inspection Guide

    – Switch off power. – Send another person to get medical aid. Safety inspection guide The intent of this inspection guide is to assist you in identifying potential hazards posed by these products. Each computer, as it was designed and built, had required safety items installed to protect users and service personnel from injury.

  • Page 12: Grounding Requirements

    • Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...
  • Page 13 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 outlets. 3. Attach signal cables to connectors. 3. Remove signal cables from connectors. 4. Attach power cords to outlet. 4.
  • Page 14 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. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 15: Chapter 3. General Information

    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 2014...
  • Page 16 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 17: Chapter 4. General Checkout

    • If the computer displays a POST error, go to “POST error codes”. • If the computer hangs and no error is displayed, continue at step 7. 7. If the test stops and you cannot continue, replace the last device tested. © Copyright Lenovo 2014...
  • Page 18 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 19: Chapter 5. Using The Setup Utility

    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.
  • Page 20 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 characters (a-z and 0-9).

  • 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.

  • Page 22: Selecting A Startup Device

    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.

  • Page 23: Exiting The Lenovo Bios Setup Utility Program

    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: •...
  • Page 24 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 25: Chapter 6. Symptom-To-Fru Index

    Check that the following are properly installed: Reseat connectors • Power Cord • On/Off Switch connector • System Board Power Supply connectors • Microprocessor connections Check the power cord. Power Cord Check the power-on switch. Power-on Switch © Copyright Lenovo 2014...

  • Page 26: Post Error Codes

    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. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 27: Chapter 7. 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 Warranty Guide, go to the Support Web site at: http://consumersupport.lenovo.com. Note: Use only parts provided by Lenovo.

  • Page 28: Replacing The Keyboard And Mouse

    Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Step 1. Remove any media (disks, CDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 29: 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 protect the touch screen from scratches or other damage.

  • Page 30: Removing The Foot Cover

    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 touch screen from scratches or other damage.

  • Page 31: Replacing The Memory Module

    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 touch screen from scratches or other damage.

  • Page 32: 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 cloth to protect the touch screen from scratches or other damage.

  • Page 33: Replacing The Optical 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 cloth to protect the touch screen from scratches or other damage.
  • Page 34 Remove the 2 screws that secure the optical drive to the metal bracket. Step 9. Use a small flat head screwdriver to press and push out the pins that secure the cover to the disk. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 35: Removing The Stand Holder

    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.

  • Page 36: Removing The Middle Cover

    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.

  • Page 37: Replacing The Converter 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 to protect the computer screen from scratches or other damage.

  • Page 38: Removing The Emi Cover

    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.

  • Page 39: 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. 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.

  • Page 40: Replacing The Tv Tuner Card

    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.

  • Page 41: 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 protect the computer screen from scratches or other damage.

  • Page 42: Replacing The Cpu

    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.
  • Page 43 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.
  • Page 44 Step 15. Lower the microprocessor straight down into its socket on the motherboard. Step 16. To secure the microprocessor in the socket, close the microprocessor retainer and lock it into position with the small handle. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 45: 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 protect the computer screen from scratches or other damage.

  • Page 46: 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 protect the computer screen from scratches or other damage.

  • Page 47: 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 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.

  • Page 48: 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 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.

  • Page 49: Removing The Rear Deco

    • Touch control board cable • Optical drive SATA cable (Red) • Hard disk drive SATA cable (Black) • Power supply cable • Hard disk drive power cable • Power switch board cable • Speaker system cable • Camera cable •...

  • Page 50: Replacing The Camera

    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.

  • Page 51: Replacing The Led Panel Module

    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.
  • Page 52 Step 12. Remove the rear deco. Refer to “Removing the rear deco”. Step 13. Remove the camera. Refer to “Replacing the camera”. Step 14. Remove the eleven screws that secure the chassis to the LED panel module. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...
  • Page 53 Step 15. Disconnect the LVDS cable from connector as shown. Step 16. Disconnect the touch control board cables from connector. Step 17. Disconnect the power switch board cables from connector. Refer to “Replacing the power switch board”. Step 18. Lift up the chassis from the bottom and disconnect the converter cable from the connector on the LED panel.
  • Page 54 Line up the chassis and new LED panel with the front bezel, and then place it into position. Attach the speaker module to the new LED module. Step 21. Reattach the system fan, EMI cover, middle cover, optical drive, computer stand, foot cover and stand base. Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 55: Chapter 8. Fru Lists

    Chapter 8. FRU lists This chapter lists the information on the field replaceable units (FRUs) for Lenovo B50–30 All-In-One desktop computer. Attention: Be sure to read and understand all the safety information before replacing any FRUs. Notes: FRUs that have a 1 or 2 in the CRU column are Customer Replaceable Units (CRUs).
  • Page 56 LCD B5035 W/O NFC NT BLK 5D10G69130 LCD B5035 W/O NFC TS Silver 5D10G69126 LCD B5035 W/O NFC NT Silver 5D10G69122 POWER liteon PS-2151-08VB ES SLIM 150w PSU 36200624 36200625 Acbel APC003-EL1G ES SLIM 150w PSU Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...
  • Page 57 WIFI Liteon WB335 1x1BGN+BT4.0 HMC W LAN 20200437 Ltn RTL8723BE 1x1BGN+BT HMC W LAN 20200439 CBT RTL8821AE 1x1ac BT combo HMC 20200571 LTN RTL8821AE 1x1ac+BT4.0 Combo HMC 11202485 Avermedia H334 DVB-T Mini TV Card 11201071 REMOTER Philips 43 key IR remoter b LAck 888900018 888010662 Philips Win7 Receiver®...
  • Page 58 Shielding MB B5030 W/HDMI_IN/OUT 5S60G56063 Shielding MB B5030 W/TV 5S60G56059 Shield MB B5030 W/HDMI_OUT 5S60G57262 Shield MB B5030 W/HDMI_OUT_TV 5S60G57237 Shield MB B5030 W/HDMI_IN 5S60G57258 Shield MB B5030 W/HDMI_IN_TV 5S60G57245 Shield MB B5030 5S60G57261 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...
  • Page 59 BEZEL Bezel ODD B5030 Silver 5B30G57240 Bezel ODD B5030 BLK 5B30G56069 BRACKET Bracket TV Tuner B5030 5B40G56050 Bracket ODD B5030 5B40G56047 Bracket HDD B5030 5B40G56064 CARDPOP Board Power Switch B5030 5 C5 0G56071 CABLE Cable Camera B5030 5C10G56056 Cable Converter to MB B5030 5C10G56053 Cable Power Switch Board B5030 5C10G56048...
  • Page 60 Liteon SK-8861(BE-EN) 2.4G KB-B LAck8 Liteon SK-8861(US-EU) 2.4G KB-B LAck8 25209203 Liteon silver silk 2.4G KB&MC kit (BR)-B LAck8 SKM0E64987 Liteon SM-8861(WW) Mouse B LAck 25203464 25203465 Liteon SM-8861 Mouse(No Battery) B LAck Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...
  • Page 61 Liteon SM-8861 Mouse(MY) B LAck 25203466 25205773 Liteon SM-8861(JP) Mouse-B LAck Liteon SK-8861(US) 2.4G KB-Silver8 25209204 25209205 Liteon SK-8861(US-MY) 2.4G KB-Silver8 Liteon SK-8861(Taiwan) 2.4G KB-Silver8 25209206 25209207 Liteon SK-8861(TH) 2.4G KB-Silver8 Liteon SK-8861(CS-SK) 2.4G KB-Silver8 25209208 25209209 Liteon SK-8861(US-IN) 2.4G KB-Silver8 Liteon SK-8861(RU) 2.4G KB-Silver8 25209210 25209211...
  • Page 62 Volex 1.8M C13 Italy Power Cord Luxshare 1.8M C13 Italy Power Cord 31502864 31039729 Longwell 1.8M Denmark C13 Power Cord® Volex 1.8M C13 Denmark Power Cord 31049511 31502863 Luxshare 1.8M C13 Denmark Power Cord Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...
  • Page 63 Longwell 1.8M SEV C13 Power Cord® 31039732 31049516 Volex 1.8M C13 Switzer LAnd Power Cord Luxshare 1.8M C13 Switzer LAnd Power Cord 31502868 31039728 Longwell 1.8M Israel C13 Power Cord® Volex 1.8M C13 Israel Power Cord 31049510 31502866 Luxshare 1.8M C13 Israel Power Cord Chapter 8 FRU lists...
  • Page 64 Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual...

  • Page 65: Chapter 9. General Information

    • Wake Up on Alarm: You can specify a date and time at which the computer will be turned on automatically. This can be either a single event , a daily event or a weekly event. • Wake Up on LAN: This feature allows LAN adapter card to wake the System. © Copyright Lenovo 2014...

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B50–30

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