This manual is intended only for trained servicers who are familiar with Lenovo products. Use this manual to troubleshoot problems effectively. Before servicing a Lenovo product, make sure to read all the information under “Safety information” on page 1 and “Important service information”...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Safety information This chapter presents the following safety information that you need to get familiar with before you service a Lenovo computer: • “General safety” on page 2 • “Electrical safety” on page 3 • “Safety inspection guide” on page 5 •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual General safety Follow the following rules to ensure general safety: • Observe a good housekeeping in the area where the machines are put during and after the maintenance. • When lifting any heavy object: 1.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Electrical safety Observe the following rules when working on electrical equipments. Important: Use only approved tools and test equipments. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents.
Page 8
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual • Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. • Do not touch live electrical circuits with the reflective surface of a plastic dental mirror.
4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Handling devices that are sensitive to electrostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Safety notices: multilingual translations The safety notices in this section are provided in English, French, German, Hebrew, Italian, Japanese, and Spanish. Safety notice 1 Before the computer is powered on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer.
Page 12
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Safety notice 2 DANGER Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations.
Page 13
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Safety notice 3 DANGER The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire or water, or short-circuit it. Dispose of the battery pack as required by local ordinances or regulations. Use only the battery in the appropriate parts listing when replacing the battery pack.
Page 14
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Safety notice 4 DANGER The lithium battery can cause a fire, an explosion, or a severe burn. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations.
Page 15
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Safety notice 5 If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water at least for 15 minutes. Seek medical care if any symptoms caused by the fluid are present after washing.
Page 16
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Safety notice 6 DANGER To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card. Afin d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d’alimentation.
Page 17
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Safety notice 8 DANGER Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d’alimentation des socles de prise de...
Hardware Maintenance Manual Laser compliance statement Some models of Lenovo computer are equipped from the factory with an optical storage device such as a CD-ROM drive or a DVD-ROM drive. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U.S.
Page 19
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 A CD-ROM drive, a DVD-ROM drive, or any other storage device installed may contain an embedded Class 3A or Class 3B laser diode. Note the following: DANGER Emits visible and invisible laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.
To download software fixes, drivers, and BIOS, follow the steps below: 1. Go to http://consumersupport.lenovo.com/ 2. Enter the serial number or select a product or use Lenovo smart downloading. 3. Select the BIOS/Driver/Applications and download.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs: • If you are instructed to replace an FRU, but the replacement does not solve the problem, reinstall the original FRU before you continue.
Electronic Equipment Directive (2002/95/EC) is a European Union legal requirement affecting the global electronics industry. RoHS requirements must be implemented on Lenovo products placed on the market after June 2006. Products on the market before June 2006 are not required to have RoHS compliant parts.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 General checkout This chapter presents the following information: • “What to do first” on page 20 • “Power system checkout” on page 21 Before you go to the checkout, make sure to read the following important notes: Important notes: •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual What to do first When you do return an FRU, you must include the following information in the parts exchange form or parts return form that you attach to it: 1. Name and phone number of servicer 2.
4. If the voltage is acceptable, do the following: • Replace the system board. • If the problem persists, go to “Lenovo B50-30/B50-30 Touch/B50-45/B50-70/ B50-80” on page 27. Note: Noise from the AC adapter does not always indicate a defect.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Perform operational charging. If the battery status indicator or icon does not light on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Related service information This chapter presents the following information: • “Restoring the factory contents by using Recovery Disc Set” on page 23 • “Passwords” on page 24 • “Power management” on page 25 Restoring the factory contents by using Recovery Disc Set...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Passwords As many as three passwords may be needed for any Lenovo computer: the power-on password (POP), the hard disk password (HDP), and the supervisor password (SVP). If any of these passwords has been set, a prompt for it appears on the screen whenever the computer is turned on.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Power management Note: Power management modes are not supported for APM operating system. To reduce power consumption, the computer has three power management modes: screen blank, sleep (standby), and hibernation. Screen blank state If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off.
Page 30
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Shutting down the computer If you are not going to use your computer for a long time, shut it down. To shut down your computer: • For Window 7 operating system: Click Start Shut down.
• “FRU replacement notices” on page 31 • “Removing and replacing an FRU” on page 32 • “Locations” on page 65 • “Parts list” on page 68 Specifications The following table lists the specifications of the Lenovo B50-30/B50-30 Touch/ B50-45/B50-70/B50-80: Table 1. Specifications Feature Description...
Page 32
• Combo audio jack × 1 • RJ45 × 1 • HDMI port × 1 • USB 2.0 × 2, USB 3.0 × 1 (B40-30/B50-30) or USB 2.0 × 1, USB 3.0 × 2 • 4 in 1 slot × 1 (SD, SDHC, SDXC, MMC) •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Status indicators The system status indicators below show the computer status: Table 2. Status indicators Indicator Status Meaning • The battery has a charge between 20% and 100% and the AC adapter is not connected to the computer.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Fn key combinations The following table shows the function of each combination of Fn with a function key. Table 3. Fn key combinations Key combination Description Fn + Home: Activate the pause function. Fn + End: Activate the break function.
This section presents notices related to removing and replacing parts. Read this section carefully before replacing any FRU. Screw notices Loose screws can cause a reliability problem. In the Lenovo computer, this problem is addressed with special nylon-coated screws that have the following characteristics: •...
Before touching it, establish personal grounding by touching a ground point with one hand or using an electrostatic discharge (ESD) strap (P/N 6405959) to remove potential shock reasons. Note: The illustrations used in this section are of the Lenovo B50-70, unless otherwise stated.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1010 Battery pack DANGER • Only use the battery specified in the parts list for your computer. Any other battery could ignite or explode. Figure 1. Removal steps of battery pack Unlock the manual battery latch . While holding the spring-loaded battery...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual 1020 Optical drive For access, remove this FRU: “1010 Battery pack” on page 33 Figure 2. Removal steps of optical drive Remove the screw . Then remove the optical drive by arrow Step Screw (quantity)
Page 39
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Figure 2. Removal steps of optical drive (continued) Remove the two screws and remove the optical drive bracket in the direction by arrow Step Screw (quantity) Color Torque M2 x 3 mm, flat-head, nylok-coated (2) Black 1.0~1.5kgf.cm...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual 1030 Bottom slot cover For access, remove this FRU: “1010 Battery pack” on page 33 Figure 3. Removal steps of bottom slot cover Remove the two screws . Then remove the bottom slot cover by arrow...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1040 Hard disk drive For access, remove these FRUs in order: • “1010 Battery pack” on page 33 • “1030 Bottom slot cover” on page 36 Attention: • Do not drop the hard disk drive or apply any physical shock to it.
Page 42
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 4. Removal steps of hard disk drive (continued) Remove four screws and detach the hard disk drive from the metal frame in the direction shown by arrow Step Screw (quantity) Color Torque M3 x 3 mm, flat-head, nylok-coated (4) Silver 2.5~3.0kgf.cm...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1050 DIMM For access, remove these FRUs in order: • “1010 Battery pack” on page 33 • “1030 Bottom slot cover” on page 36 Figure 5. Removal steps of DIMM Release the two latches on both edges of the socket at the same time in the...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual 1060 PCI Express Mini Card for wireless LAN/WAN For access, remove these FRUs in order: • “1010 Battery pack” on page 33 • “1030 Bottom slot cover” on page 36 Figure 6. Removal steps of PCI Express Mini Card for wireless LAN/WAN...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1070 Keyboard For access, remove this FRU: • “1010 Battery pack” on page 33 Figure 7. Removal steps of keyboard Remove three screws Step Screw (quantity) Color Torque M2 x 6 mm, flat-head, nylok-coated (3) Black 1.5~2.0kgf.cm...
Page 46
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 7. Removal steps of keyboard (continued) Lift up the keyboard and disconnect the connector in the direction shown by arrows . Be careful not to damage the connector. When installing: Make sure that the keyboard connector is attached firmly to...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1080 Keyboard bezel For access, remove these FRUs: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1070 Keyboard” on page 41 Figure 8. Removal steps of keyboard bezel...
Page 48
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 8. Removal steps of keyboard bezel (continued) Disconnect the three connectors in the direction shown by arrow and remove the keyboard bezel by arrow When installing: Make sure that all the connectors are attached firmly.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1090 Finger print and power board For access, remove these FRUs: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1070 Keyboard” on page 41 •...
Page 50
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 9. Removal steps of finger print and power board (Continued) Peel off the adhesive of the power board FPC. Remove the screw . Then remove the power board in the direction by arrow...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual 1130 System board Important notices for handling the system board: When handling the system board, bear the following in mind. • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
Page 55
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Figure 13. Removal steps of system board (continued) Disconnect the ODD board connector and the USB board connector in the direction shown by arrow . Then disconnect the EDP connector in the direction shown by arrow Remove two screws...
Page 56
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 13. Removal steps of system board (continued) For B50-70 (on select models): Disconnect the two docking connectors by arrows , then remove the system board in the direction by arrow For B50-30/B50-30 Touch/B50-45/B50-70/B50-80:...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1140 Fan and heat sink assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1160 LCD unit and base cover For access, remove these FRUs: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Page 60
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 16. Removal steps of LCD unit and base cover (continued) Remove the LCD unit from the base cover in the direction by arrow...
Page 61
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 For Windows 7 operating System: Note: Applying labels to the base cover The new base cover FRU is shipped with a kit containing labels of several kinds. When you replace the base cover, you need to apply the following...
Page 62
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual For Windows 8 operating System: Note: Applying labels to the base cover The new base cover FRU is shipped with a kit containing labels of several kinds. When you replace the base cover, you need to apply the following...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1170 LCD front bezel For access, remove these FRUs: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual 1180 LCD panel For access, remove these FRUs in order: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Page 65
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Figure 18. Removal steps of LCD panel (continued) Turn over the LCD module in the direction as shown by arrow . Disconnect the connector by arrow to remove the LCD panel in the direction by arrow When installing: Make sure that the LCD panel connector is attached firmly.
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 1200 Antenna, LCD cable, and integrated camera For access, remove these FRUs in order: • “1010 Battery pack” on page 33 • “1020 Optical drive” on page 34 • “1030 Bottom slot cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Page 68
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Figure 20. Removal steps of Antenna, LCD cable, and integrated camera Release two antenna cables and one LCD cable from the cable guide. Detach the adhesive of the antenna to remove them in the direction by arrow When installing: •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Locations Front view Integrated camera Built-in microphone Wireless antennas Computer display Speakers Power button Finger print Touch pad Memory card slot System status indicator...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Right-side view Combo audio jack USB port Novo button Kingston lock slot Optical drive...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Bottom and left-side view AC power adapter jack Lenovo OneLink connector (on selected models) Louvers VGA port RJ-45 port HDMI port USB port...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Parts list This section presents the following service parts: • “Overall” on page 69 • “LCD FRUs” on page 102 • “Keyboard” on page 105 • “Miscellaneous parts” on page 108 • “AC adapters” on page 109 •...
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual LCD FRUs In Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80, the type of LCD is 15.6- inch high definition (HD).
Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80 Hardware Maintenance Manual Power cords A Lenovo power cord for a specific country or region is usually available only in that country or region: Table 11. Parts list—3-pin power cords Region B50- B50- B50- B50- B50- U ID...
The result obtained in other operating environments may vary. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
Actual results may vary. Users of this document should verify the applicable data for their specific environment. Trademarks The following terms are either registered trademarks or trademarks of Lenovo in the United States and/or other countries: ® Lenovo ®...
Need help?
Do you have a question about the B50-30 Touch and is the answer not in the manual?
Questions and answers