Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual Machine Types: F0AV [B50-35]
Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual Machine Types: F0AV [B50-35]
Second Edition (July 2014)23rd © 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.
Contents Chapter 1. About this manual . . . . . . 1 Chapter 7. Replacing hardware . . . . Important Safety Information . . . . . . . . . . General information . . . . . . . Replacing the keyboard and mouse Replacing the power cord . . . . Removing the stand base . . . . Removing the foot cover . . . . . Replacing the memory module . . Replacing the hard disk drive . . . Replacing the optical drive . . . . Removing the stand holder . . . . Removing the middle cover . . . Replacing the converter board . .
iv Lenovo B50–35 All-In-One Computer Hardware Maintenance Manual
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. The description of the TV-tuner card in this manual applies only to computers with a TV-tuner card installed. It does not apply to computers without a TV-tuner card.
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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 heavy object: 1. Ensure you can stand safely without slipping. 2. Distribute the weight of the object equally across both feet. 3. Lift slowly. Never move suddenly or twist when you attempt to lift. 4.
Observe the following rules when working on electrical equipment. Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have rubber floor mats near their equipment that contain small conductive fibers to decrease electrostatic discharge. • Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet.
– 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. This guide addresses only those items.
• 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 and retains a charge even when you are wearing a wrist strap. • Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.
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. Remove all cables from devices. 5. Turn device ON. CAUTION: When replacing the lithium battery, use only Part Number 45C1566 or an equivalent type battery recommended by the manufacturer.
≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs) CAUTION: Use safe practices when lifting. CAUTION: The power control button on the device and the power switch on the power supply do not turn 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. 2 1 CAUTION: Do not place any object weighing more than 82 kg (180 lbs.
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 B50–35 This section lists the physical specifications.
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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, or formatting. Data or programs can be overwritten if you select an incorrect drive. General error messages appear if a problem or conflict is found by an application, the operating system, or both.
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Chapter 5. Using the Setup Utility The Setup Utility program is used to view and change the configuration settings of your computer, regardless of which operating system you are using. However, the operating system settings might override any similar settings in the Setup Utility program. Starting the Lenovo BIOS Setup Utility program To start the Lenovo BIOS Setup Utility program, do the following: 1.
Administrator Password Setting an Administrator Password deters unauthorized persons from changing configuration settings. You might want to set an Administrator Password if you are responsible for maintaining the settings of several computers. After you set an Administrator Password, a password prompt is displayed every time you access the Lenovo BIOS Setup Utility program. If both the Administrator and Power-On Password are set, you can type either password.
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 password, then press the Enter key. 4. Re-type the password to confirm. If you typed the password correctly, the password will be installed. To change a Power-On Password, do the following: 1.
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 Enter key. 5. Return to the Lenovo BIOS Setup Utility program menu and select the Exit option. 6. Select Save changes and Exit from the menu. Notes: a.
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 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.
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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 you decide which FRUs to have available when servicing a computer. If you are unable to correct the problem using this index, go to “Undetermined problems” on page 20. Notes: • If you have both an error message and an incorrect audio response, diagnose the error message first.
POST error codes Each time you turn the computer on, it performs a series of tests to check that the system is operating correctly 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 • Checks that the memory is working correctly • Starts video operations • Verifies that the boot drive is working POST Error Message Description/Action Keyboard error Cannot initialize the keyboard.
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. General information Pre-disassembly instructions Before starting the disassembly procedure, make sure that you do the following: 1.
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, and turn off all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Locate the connector for the keyboard. Refer to “Side view of the computer” and “Rear view of the computer”. Step 4.
Step 2. Disconnect the power cord from the connector on the computer 1 , then unplug the power cord from electrical outlet. 2 B50-30/B50-35 Step 3. Connect the new power cord as shown. B50-30/B50-35 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.
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. 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 views” and “Rear view” for help with locating the various connectors. Step 4.
Step 5. Lift up the stand holder then slide out the foot cover as shown. 1 2 Step 6. To reattach the foot cover: a. Lift up the stand holder. b. Line up the foot cover with mounting holes on the back of the computer, then slide it back into position. 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.
Step 6. Remove the memory shielding as shown. Step 7. Push out the latches on both sides of the memory socket to release the memory module 1 and gently pull the memory module upward to remove it from its socket. 2 Step 8. To install the new memory module: Step 9. a. Align 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. b. Reattach the memory shielding. Reattach the foot cover and stand base.
Step 6. Lift out the hard disk drive and bracket as shown. 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: Step 9. a. Line up the new hard disk drive with the bracket and secure it with the pins. b. Connect the data and power cables to the new hard disk drive. c. Slide the hard disk drive and bracket back into position. Reattach the foot cover and stand base.
Step 6. Locate the optical removal notch, and then use a screw driver push the optical drive out. Step 7. 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 8. Remove the 2 screws that secure the optical drive to the metal bracket. 1 Step 9. Use a small flat head screwdriver to press and push out the pins that secure the cover to the disk.
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. Slide the new optical drive into the drive bay. Step 12. Reattach the foot cover and stand base. Removing the stand holder Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
1 Step 7. To reattach the stand holder: a. Align the holes on the stand holder with mounting holes on the chassis, place the stand holder 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, then slide it back into position. Step 9. Reattach the stand base. Removing the middle cover Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Step 9. Lift up the middle cover as shown to remove it. Step 10. 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 six screws. Step 11. Reattach the stand holder, optical drive, foot cover and stand base. Replacing the converter board Note: 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, 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 locating the various connectors. Step 4.
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 connectors. Step 4. Remove the stand base. Refer to “Removing the stand base”. Step 5. Remove the foot cover. Refer to “Removing the foot cover”. Step 6. Remove the optical drive.
Step 4. Remove the stand base. Refer to “Removing the stand base”. Step 5. Remove the foot cover. Refer to “Removing the foot cover”. Step 6. Remove the optical drive. Refer to “Replacing the optical drive”. Step 7. Remove the stand holder. Refer to “Removing the stand holder”. Step 8. Remove the middle cover. Refer to “Removing the middle cover”. Step 9. Remove the EMI cover. Refer to “Removing the EMI cover”. Step 10. Disconnect the antenna cables from the Wi-Fi card. Step 11.
Step 5. Remove the foot cover. Refer to “Removing the foot cover”. Step 6. Remove the optical drive. Refer to “Replacing the optical drive”. Step 7. Remove the stand holder. Refer to “Removing the stand holder”. Step 8. Remove the middle cover. Refer to “Removing the middle cover”. Step 9. Remove the EMI cover. Refer to “Removing the EMI cover”. Step 10. Disconnect the antenna cable from the TV-Tuner card. Step 11. Remove the screw that secures the TV-Tuner card to the motherboard. Step 12.
Step 6. Remove the optical drive. Refer to “Replacing the optical drive”. Step 7. Remove the stand holder. Refer to “Removing the stand holder”. Step 8. Remove the middle cover. Refer to “Removing the middle cover”. Step 9. Remove the EMI cover. Refer to “Removing the EMI cover”. Step 10. Remove the sealing tape between the system fan and heat-sink. Step 11. Remove the six screws that secure the heat-sink to the motherboard and chassis. Step 12. Slide then lift up the heat-sink to remove it.
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 “Removing the stand base”. Step 5. Remove the foot cover. Refer to “Removing the foot cover”. Step 6. Remove the optical drive. Refer to “Replacing the optical drive”. Step 7. Remove the stand holder.
Step 13. Holding the sides of the microprocessor with your fingers, remove the protective cover 1 that protects the gold contacts on the new microprocessor. 2 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. Step 15.
Step 17. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the grease syringe). Step 18. Reattach the heat-sink, EMI cover, middle cover, optical drive, stand holder, foot cover and stand base. 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.
a. Place the new system fan into position, and then secure it to the chassis with three screws. b. Connect the system fan power cable to the connector on the motherboard. c. Use the sealing tape to seal the gap in-between the system fan and heat-sink. Step 15. Reattach the EMI cover, middle cover, optical drive, stand holder, foot cover and stand base. Replacing the speaker system Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
a. Place the new speaker system into position, then secure it with four screws. b. Connect the new speaker cables to the connector on the motherboard. Step 13. Reattach the EMI cover, middle cover, optical drive, stand holder, foot cover and stand base. 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.
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. To replace the motherboard: Step 1.
• 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 • LVDS cable Step 17. Remove the seven 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 new motherboard into position. b.
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 rear deco: 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.
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 right view” and “Rear view” for help with locating the various connectors. Step 4.
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 connectors. Step 4. Remove the stand base. Refer to “Removing the stand base”. Step 5. Remove the foot cover. Refer to “Removing the foot cover”. Step 6. Remove the optical drive.
Step 15. Disconnect the LVDS cable from connector as shown. 1 2 Step 16. Disconnect the touch control board cables from connector. 3 Step 17. Disconnect the power switch board cables from connector. Refer to “Replacing the power switch board”. 4 Step 18. Lift up the chassis from the bottom and disconnect the converter cable from the connector on the LED panel. 5 Step 19. Lift up the chassis to separate the chassis from the LED panel module. Step 20.
c. Connect the LVDS cable to the connector on the motherboard. d. Connect the touch control board cables to the connector on the touch control board. e. Connect the power switch board cable to the connector on the power switch board. f. Secure the LED panel to the chassis with the eleven screws. g. Attach the camera to the new LED module. h. Line up the rear deco with the guide track on the LED module, then slide the rear deco into position. i.
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). • 1– identifies parts that are fairly simple to replace, requiring few or no tools. • 2– identifies parts that are slightly more difficult to replace.
Mic_R D9QBJ 8GB D3L-1600S Memory-HF 1-101012 M471B5674QH0-YK0 2GB D3L-1600S Memory-HF 1-100983 M471B5173DB0-YK0 4GB D3L-1600S Memory-HF 1-100942 HMT425S6AFR6A-PB 2GB D3L-1600S Memory-HF 1-100643 HMT451S6BFR8A-PB 4GB D3L-1600S Memory-HF 1-100985 Mic_R D9PSH 2GB D3L-1600S Memory-HF 1-100965 Mic_R D9QBJ 4GB D3L-1600S Memory-HF 1-100967 M471B5173DB0-YK0 4GB D3L-1600S Memory-HF 1-100942 M471B1G73DB0-YK0 8GB D3L-1600S Memory-HF 1-100943 HMT451S6BFR8A-PB 4GB D3L-1600S Memory-HF 1-100985 HMT41GS
N TV Avermedia H334 DVB-T Mini TV Card 11201071 1 REMOTER Philips 43 key IR remoter black 888900018 Philips Win7 Receiver® 888010662 Philips IR receiver 888900019 N CAMERA Camera B5030 W/Bracket 2D 5C20G56065 1 SPEAKER B56X JBL Speaker 25216350 N HEATSINK Heatsink B5035 DIS AVC 5H40G69121 Heatsink B5035 UMA CM 5H40G69127 Fan N Delta BUB1112DDA02 3450RPM 11022FAN 31507283 SUNON MFB0201V1C010S99 3450RPM 11022FAN 31507284 N Touch Pad Chicony TGR1226 2.
Back B5030 W/HDMI_IN/OUT BLK 5CB0G56049 Back B5030 W/TV BLK 5CB0G56070 Back B5030 W/HDMI_OUT BLK 5CB0G57250 Back B5030 W/HDMI_IN BLK 5CB0G57269 Back B5030 W/HDMI_OUT_TV BLK 5CB0G57253 Back B5030 W/HDMI_IN_TV BLK 5CB0G57273 Back B5030 BLK 5CB0G57238 Slide B5030 W/TV_HDMI_IN/OUT BLK 5CB0G56073 Slide B5030 W/HDMI_IN/OUT BLK 5CB0G56068 Slide B5030 W/TV BLK 5CB0G56067 Slide B5030 W/HDMI_OUT BLK 5CB0G57234 Slide B5030 W/HDMI_IN BLK 5CB0G57260 Slide B5030 W/HDMI_OUT_TV BLK 5CB0G57243 Slid
N CARDPOP Board Power Switch B5030 5C50G56071 N CABLE Cable Camera B5030 5C10G56056 Cable Converter to MB B5030 5C10G56053 Cable Power Switch Board B5030 5C10G56048 Cable TV Tuner B5030 PAL 5C10G56072 Cable TV Tuner B5030 NTSC 5C10G56051 Cable SATA HDD&ODD B5030 5C10G56054 1 KB&MS Sunrex EKB-10YA(US) B-Silk USB KB-LVT8 25209111 Primax KB4721(US) B-Silk USB KB-LVT8 25209112 Sunrex EKB-10YA(TW) B-Silk USB KB-LVT8 25209114 Sunrex EKB-10YA(TH) B-Silk USB KB-LVT8 25209115 Sunrex EKB-10YA(C
54 Primax M300 USB gesture mouse BLK 25213876 Liteon SK-8861(US) 2.4G KB-Black8 25209175 Liteon SK-8861(US-MY) 2.4G KB-Black8 25209176 Liteon SK-8861(TW) 2.4G KB-Black8 25209177 Liteon SK-8861(TH) 2.4G KB-Black8 25209178 Liteon SK-8861(CS-SK) 2.4G KB-Black8 25209179 Liteon SK-8861(US-IN) 2.4G KB-Black8 25209180 Liteon SK-8861(RU) 2.4G KB-Black8 25209181 Liteon SK-8861(GB) 2.4G KB-Black8 25209182 Liteon SK-8861(Nordic) 2.4G KB-Black8 25209183 Liteon SK-8861(LA) 2.
Liteon SK-8861(US-IN) 2.4G KB-Silver8 25209209 Liteon SK-8861(RU) 2.4G KB-Silver8 25209210 Liteon SK-8861(GB) 2.4G KB-Silver8 25209211 Liteon SK-8861(Nordic) 2.4G KB-Silver8 25209212 Liteon SK-8861(LA) 2.4G KB-Silver8 25209213 Liteon SK-8861(LA-AR) 2.4G KB-Silver8 25209214 Liteon SK-8861(SA) 2.4G KB-Silver8 25209215 Liteon SK-8861(CH) 2.4G KB-Silver8 25209216 Liteon SK-8861(DE) 2.4G KB-Silver8 25209217 Liteon SK-8861(TR) 2.4G KB-Silver8 25209218 Liteon SK-8861(ES) 2.
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Chapter 9. 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 reduces the power consumption of certain components of the computer such as the system power supply, processor, hard disk drives, and some monitors.
