Lenovo B550 Hardware Maintenance Manual
Note: Before using this information and the product it supports, be sure to read the general information under “Notices” on page 86. First Edition (March 2010) © Copyright Lenovo 2010. All rights reserved. LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and disclosure.
Contents About this manual........................................ iv Safety information......................................... 1 General safety................................................. 2 Electrical safety............................................... 3 Safety inspection guide................................... 5 Handling devices that are sensitive to electrostatic discharge..................................... 6 Grounding requirements..................................
About this manual This manual contains service and reference information for the following Lenovo product: Lenovo B550 Use this manual to troubleshoot problems. The manual is divided into the following sections: •• The common sections provide general information, guidelines, and safety information required for servicing computers. •• The product-specific section includes service, reference, and product-specific parts information.
Safety information Safety information This chapter presents the following safety information that you need to get familiar with before you service a Lenovo B550 computer: •• “General safety” on page 2 •• “Electrical safety” on page 3 •• “Safety inspection guide” on page 5 •• “Handling devices that are sensitive to electrostatic discharge” on page 6 •• “Grounding requirements” on page 6 •• “Safety notices: multilingual translations” on page 7 •• “Laser compliance statement” on page 14 1
Lenovo B550 Hardware Maintenance Manual General safety Follow these rules below 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. Make sure that you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift it. 4.
Safety information 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. Many customers have rubber floor mats near their machines that contain small conductive fibers to decrease electrostatic discharges. Do not use such kind of mat to protect yourself from electrical shock.
Lenovo B550 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. The surface is conductive; such touching can cause personal injury and machine damage.
Safety information Safety inspection guide The purpose of this inspection guide is to assist you in identifying potential unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service personnel from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards according to the attachment of non-Lenovo features or options not covered by this inspection guide.
Lenovo B550 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. Notes: 1.
Safety information 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. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical shorts.
Lenovo B550 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 shortcircuit it. Dispose of the battery as required by local ordinances or regulations. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery. Certaines batteries de secours contiennent du nickel et du cadmium.
Safety information 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. Use of an incorrect battery can result in ignition or explosion of the battery. La batterie contient du nickel. Ne la démontez pas, ne l’exposez ni au feu ni à l’eau.
Lenovo B550 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. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.
Safety information 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. Si le panneau d’affichage à cristaux liquides se brise et que vous recevez dans les yeux ou sur les mains une partie du fluide, rincez-les abondamment pendant au moins quinze minutes.
Lenovo B550 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. Aus Sicherheitsgründen die Kunststoffabdeckung, die den unteren Teil der Spannungswandlerplatine umgibt, nicht entfernen.
Safety information 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 courant, retirez la batterie et déconnectez tous les cordons d’interface.
Lenovo B550 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. to conform to the requirements of the Department of Health and Human Services 21 Code of Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products.
Safety information 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. Radiação por raio laser ao abrir. Não olhe fixo no feixe de luz, não olhe diretamente por meio de instrumentos óticos e evite exposição direta com o feixe de luz.
Lenovo B550 Hardware Maintenance Manual Important service information This chapter presents the following important service information: •• “Strategy for replacing FRUs” on page 16 – “Strategy for replacing a hard disk drive” on page 17 – “Important notice for replacing a system board ” on page 17 •• “Important information about replacing RoHS compliant FRUs” on page 18 Important: BIOS and device driver fixes are customer-installable.
Important service information 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. •• Some computers have both a processor board and a system board. If you are instructed to replace either of them, and replacing one of them does not solve the problem, reinstall that board, and then replace the other one.
Lenovo B550 Hardware Maintenance Manual Important information about replacing RoHS compliant FRUs RoHS, The Restriction of Hazardous Substances in Electrical and 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.
General checkout 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: • Only certified trained personnel can service the computer. • Before replacing any FRU, read the entire page on removing and replacing FRUs. • When you replace FRUs, use new nylon-coated screws.
Lenovo B550 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. Date of service 3. Date on which the machine failed 4. Date of purchase 5. Procedure index and page number in which the failing FRU was detected 6. Failing FRU name and part number 7. Machine type, model number, and serial number 8.
General checkout Power system checkout To verify a symptom, follow the steps below: 1. Turn off the computer. 2. Remove the battery pack. 3. Connect the AC adapter. 4. Make sure that power is supplied when you turn on the computer. 5. Turn off the computer. 6. Disconnect the AC adapter and install the charged battery pack. 7. Make sure that the battery pack supplies power when you turn on the computer.
Lenovo B550 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. If the charge indicator still does not light on, replace the system board. Then reinstall the battery pack. If it is still not charged, go to the next section.
Related service information Related service information This chapter presents the following information: •• “Restoring the factory contents by using OneKey Recovery” on page 23 •• “Passwords” on page 24 •• “Power management” on page 25 Restoring the factory contents by using OneKey Recovery Restore of factory default The Lenovo B550 computers come with pre-installed OneKey Rescue System.
Lenovo B550 Hardware Maintenance Manual When you use the recovery discs to boot your computer, the system will enter the user interface for system recovery automatically. Please follow the prompt to insert the backup discs to complete the whole recovery process. Note: The recovery process might take up to 2 hours. Passwords As many as two passwords may be needed for any Lenovo computer: the power-on password (POP) and the supervisor password (SVP).
Related service information 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 mode If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off. You can also turn off the LCD backlight by pressing Fn+F2. To end screen blank mode and resume normal operation, press any key.
Lenovo B550 Hardware Maintenance Manual Hibernation mode In hibernation mode, the following occurs: •• The system status, RAM, VRAM, and setup data are stored on the hard disk. •• The system is powered off. To cause the computer to enter hibernation mode, follow the steps below: •• If you are using the ACPI operating system and have defined one of the following actions as the event that causes the system to go into hibernation mode, perform that action: – Closing the lid. – Pressing the power button.
Lenovo B550 Lenovo B550 This chapter presents the following product-specific service references and product-specific parts information: •• “Specifications” on page 27 •• “Status indicators” on page 29 •• “Fn key combinations” on page 31 •• “FRU replacement notices” on page 32 •• “Removing and replacing an FRU” on page 33 •• “Locations” on page 71 •• “Parts list” on page 73 Specifications The following table lists the specifications of the Lenovo B550 : Table 1.
Lenovo B550 Hardware Maintenance Manual Table 1. Specifications (continued) Feature Description Keyboard Touch pad Integrated camera Battery • 6-row Lenovo Keyboard • Yes with two buttons AC adapter Pre-installed operating system 28 • 0.
Lenovo B550 Status indicators The system status indicators below show the computer status: 1 2 3 4 5 6 Table 2. Status indicators Indicator Meaning 1 Caps lock White: 2 Num lock White: Caps Lock mode is enabled. You can enter all alphabetic characters (A-Z) in uppercase without pressing the Shift key. To enable or disable Caps Lock mode, press the CapsLk key. The separate numeric keypad on the keyboard is enabled. To enable or disable the numeric keypad, press the Num Lock key.
Lenovo B550 Hardware Maintenance Manual Table 2. Status indicators (continued) Indicator 30 3 Power on 4 Battery status 5 Wireless status 6 Drive in use Meaning White: System is enabled. Blinking white: System is in sleep mode. Off: System is in hibernate mode or shut down. Blinking amber: (500ms off/ 1s on) The remaining power of the battery is less than 5% of its capacity. Blinking amber: (100ms off/ 3.
Lenovo B550 Fn key combinations The following table shows the function of each combination of Fn with a function key. Table 4. Fn key combinations Key combination Description Fn + F1: Fn + F2: Fn + F3: Fn + F4: Fn + F5: Fn + F8: Fn + F9: Fn + F10: Fn + F11: Fn + F12: Fn + Delete Fn + PrtSc: Fn + Pause: Fn + / : Fn + / : Enter sleep mode. Turn on/off the backlight of the LCD screen. Shift to other connected display devices. Open the interface for display resolution settings.
Lenovo B550 Hardware Maintenance Manual FRU replacement notices 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: •• They maintain tight connections. •• They do not easily come loose, even with shock or vibration. •• They are harder to tighten.
Lenovo B550 Removing and replacing an FRU This section presents exploded figures with the instructions to indicate how to remove and replace the FRU. Make sure to observe the following general rules: 1. Do not attempt to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts. 2. Before replacing any FRU, review “FRU replacement notices” on page 32. 3. Begin by removing any FRUs that have to be removed before the failing FRU.
Lenovo B550 Hardware Maintenance Manual 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 battery release lever 1. Holding the battery release lever in the unlocked position 2, remove the battery pack in the direction shown by arrow 3. 1 1 3 2 2 When installing: Install the battery pack along the slide rails of the slot.
Lenovo B550 1020 Hard disk drive (HDD) slot cover and HDD For access, remove this FRU: •• “1010 Battery pack” on page 34 Attention: • Do not drop the hard disk drive or apply any physical shock to it. The hard disk drive is sensitive to physical shock. Improper handling can cause damages and permanent loss of data. • Before removing the drive, suggest the customer to backup all the information on it if possible. • Never remove the drive while the system is operating or is in suspend mode. Figure 2.
Lenovo B550 Hardware Maintenance Manual Figure 2. Removal steps of HDD slot cover and HDD (continued) Pull the tab up in the direction shown by arrows 3 4 to remove the hard disk drive from the slot. 3 4 When installing: Make sure that the HDD connector is attached firmly.
Lenovo B550 1030 Memory/Wireless module/CPU (central processing unit) compartment cover For access, remove this FRU: •• “1010 Battery pack” on page 34 Figure 3. Removal steps of Memory/Wireless module/CPU compartment cover Note: Loosen the screws 1, but do not remove them. Remove the screw 2. Remove the Memory/Wireless module/CPU compartment cover in the direction shown by arrow 3. 1 1 2 3 Step 2 Screw (quantity) Color Torque M2.5 × 8 mm, flat-head, nylon-coated (1) Black 2.0~2.
Lenovo B550 Hardware Maintenance Manual 1040 Optical drive For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 Figure 4. Removal steps of optical drive Remove the screw 1, insert a screwdriver into the screw hole and push the optical drive in the direction shown by arrow 2, and then pull the optical drive out in the direction shown by arrow 3. 1 Step 1 Screw (quantity) Color Torque M2.
Lenovo B550 1050 DIMM For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 Figure 5. Removal steps of DIMM Release the two latches on both edges of the socket at the same time in the direction shown by arrows 1, and then unplug the DIMM in the direction shown by arrow 2.
Lenovo B550 Hardware Maintenance Manual 1060 Fan assembly and Heat Sink assembly For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 Figure 6. Removal steps of fan assembly and heat sink assembly Note: Remove three screws 1 and four spring screws 2. Unplug the connector in the direction shown by arrow 3.
Lenovo B550 Figure 6. Removal steps of fan assembly and heat sink assembly (continued) Lift the fan assembly and heat sink assembly in the direction shown by arrow 4. Be careful not to damage the connector. 4 Attention: Do not handle the heat sink assembly roughly. Improper handling can cause distortion or deformation and imperfect contact with components.
Lenovo B550 Hardware Maintenance Manual Figure 6. Removal steps of fan assembly and heat sink assembly (continued) a b When installing: •• Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, to the a part shown in the figure above. Either too much or too less grease application can cause a thermal problem due to imperfect contact with a component.
Lenovo B550 1070 CPU For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1060 Fan assembly and Heat Sink assembly” on page 40 Attention: CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling. Figure 7.
Lenovo B550 Hardware Maintenance Manual 1080 PCI Express Mini Card for wireless LAN/WAN For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 Figure 8. Removal steps of PCI Express Mini Card for wireless LAN/WAN 1 1 2 Disconnect the two wireless LAN cables (black, white) in the direction shown by arrows 1, and then remove the screw 2.
Lenovo B550 Figure 8. Removal steps of PCI Express Mini Card for wireless LAN/WAN (continued) Remove the wireless LAN card in the direction shown by arrow 3. 3 When installing: •• Plug the black cable into the jack labeled MAIN, and the white cable into the jack labeled AUX on the card.
Lenovo B550 Hardware Maintenance Manual 1090 Keyboard cover and power board For access, remove this FRU: •• “1010 Battery pack” on page 34 Note: Power board is attached to the keyboard cover. Figure 9. Removal steps of Keyboard cover and power board Remove the screws 1. 1 1 1 1 Step 1 46 Screw (quantity) Color Torque M2.0 × 2.5 mm, flat-head, nylon-coated (4) Black 1.5~2.
Lenovo B550 Figure 9. Removal steps of Keyboard cover and power board (continued) Open the LCD at an angle about 120°. Lift the keyboard cover with fingers in the direction shown by arrows 2 3.
Lenovo B550 Hardware Maintenance Manual Figure 9. Removal steps of Keyboard cover and power board (continued) Turn the keyboard cover over in the direction shown by arrow 4, disconnect the FPC connector in the direction shown by arrows 5 6, and then remove the keyboard cover. 6 5 4 When installing: Make sure that the FPC connector is attached firmly. Remove the screws 7, and then remove the power board 8. 7 7 8 Step 7 48 Screw (quantity) Color Torque M2.
Lenovo B550 1100 Keyboard For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1090 Keyboard cover and power board” on page 46 Figure 10. Removal steps of keyboard Remove the screws 1. 1 1 1 1 Step 1 Screw (quantity) Color Torque M2.0 × 2.5 mm, flat-head, nylon-coated (4) Black 2.0+/-0.
Lenovo B550 Hardware Maintenance Manual Figure 10. Removal steps of keyboard (continued) Lift the keyboard a little 2, unlock the FPC connector and then detach the connector in the direction shown by arrows 3 4. 2 4 3 When installing: Make sure that the FPC connector is attached firmly and then lock the FPC connector.
Lenovo B550 1110 LCD unit For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090 Keyboard cover and power board” on page 46 •• “1100 Keyboard” on page 49 Figure 11. Removal steps of LCD unit Remove the two screws 1 and detach the LCD connector 2. 2 1 1 Step 1 Screw (quantity) Color Torque M2.
Lenovo B550 Hardware Maintenance Manual Figure 11. Removal steps of LCD unit (continued) Pull out the LCD cable and the two antenna cables from the guide hole and release them from the cable guides in the direction shown by arrows 3. Detach the connector in the direction shown by arrows 4 5. 5 4 3 3 3 When installing: •• Route the antenna cables along the cable guides. As you route the cables, make sure that they are not subjected to any tension.
Lenovo B550 Figure 11. Removal steps of LCD unit (continued) Remove two screws 6. 6 6 Step 6 Screw (quantity) Color Torque M2.5 × 8 mm, flat-head, nylon-coated (2) Black 2.0~2.
Lenovo B550 Hardware Maintenance Manual Figure 11. Removal steps of LCD unit (continued) Remove the LCD unit in the direction shown by arrows 7.
Lenovo B550 1120 Keyboard bezel For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1040 Optical drive” on page 38 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090 Keyboard cover and power board” on page 46 •• “1100 Keyboard” on page 49 •• “1110 LCD unit” on page 51 Figure 12. Removal steps of keyboard bezel Remove thirteen screws 1 and three screws 2 on the bottom.
Lenovo B550 Hardware Maintenance Manual Figure 12. Removal steps of keyboard bezel (continued) Remove three screws 3 and one screw 4. 3 4 3 3 Step 3 4 56 Screw (quantity) Color Torque M2.5 × 6 mm, flat-head, nylon-coated (3) Black 2.0~2.5 kgf·cm M2.0 × 3 mm, flat-head, nylon-coated (1) Silver 2.0~2.
Lenovo B550 Figure 12. Removal steps of keyboard bezel (continued) Detach two FPC connectors in the direction shown by arrows 5 6. 6 5 When installing: Make sure that all the FPC connectors are attached firmly.
Lenovo B550 Hardware Maintenance Manual Figure 12. Removal steps of keyboard bezel (continued) Remove the keyboard bezel in the direction shown by arrow 7.
Lenovo B550 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. • Avoid rough handling of any kind. • In the whole process, make sure not to drop or stack the system board. • If you put a system board down, make sure to put it only on a padded surface such as an ESD mat or conductive corrugated material.
Lenovo B550 Hardware Maintenance Manual Figure 13. Removal steps of system board (continued) Unplug two connectors (bluetooth connector and speakers connector) in the direction shown by arrow 2, and remove two screws 3. 3 3 2 When installing: Make sure that the connectors are attached firmly. Step 3 60 Screw (quantity) Color Torque M2.5 × 5 mm, flat-head, nylon-coated (2) Black 2.0~2.
Lenovo B550 Figure 13. Removal steps of system board (continued) Remove the system board in the direction shown by arrow 4. 4 b a a When installing: When attaching the system board to the base cover, adjust the placement of the wireless radio switch as shown in b , and make sure that both of the audio jack and the microphone jack are attached to the holes on the base cover as shown in a . Improper placement of the switch or those jacks might cause a damage.
Lenovo B550 Hardware Maintenance Manual 1140 Bluetooth daughter card, speakers and base cover For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1020 Hard disk drive (HDD) slot cover and HDD” on page 35 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1040 Optical drive” on page 38 •• “1050 DIMM” on page 39 •• “1060 Fan assembly and Heat Sink assembly” on page 40 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090
Lenovo B550 Figure 14. Removal steps of Bluetooth daughter card, speakers and base cover (continued) Remove four screws 3, release the speaker cables from the cable guides, and then remove the speakers 4. 3 3 3 3 4 4 Step 3 Screw (quantity) Color Torque M2.5 × 5.7 mm, flat-head, nylon-coated (4) Black 1.5~2.
Lenovo B550 Hardware Maintenance Manual Figure 14. Removal steps of Bluetooth daughter card, speakers and base cover (continued) Remove the power assembly in the direction shown by arrows 5. 5 5 When installing: Make sure that the power connector is attached firmly.
Lenovo B550 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 label: The following labels need to be peeled off from the old base cover, and need to be put on the new base cover. a Energy save label b COA label c Rating label d PRC CODE label For some models, you also need to apply one or two FCC labels.
Lenovo B550 Hardware Maintenance Manual 1150 LCD front bezel For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090 Keyboard cover and power board” on page 46 •• “1100 Keyboard” on page 49 •• “1110 LCD unit” on page 51 Figure 15. Removal steps of LCD front bezel Remove six screws 1.
Lenovo B550 1160 LCD panel and hinges For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090 Keyboard cover and power board” on page 46 •• “1100 Keyboard” on page 49 •• “1110 LCD unit” on page 51 •• “1150 LCD front bezel” on page 66 Figure 16.
Lenovo B550 Hardware Maintenance Manual Figure 16. Removal steps of LCD panel and hinges (continued) Remove the LCD panel in the direction shown by arrow 2. 2 Note: The LCD circuit is attached to the LCD panel, and is connected with the LCD cable by an FPC connector. Remove eight screws 3, and then release the hinges from the LCD panel in the direction shown by arrows 4. 4 3 3 3 3 3 3 3 3 4 Step 3 68 Screw (quantity) Color Torque M2.0 × 3 mm, flat-head, nylon-coated (8) Silver 1.0~1.
Lenovo B550 1170 Integrated camera For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090 Keyboard cover and power board” on page 46 •• “1100 Keyboard” on page 49 •• “1110 LCD unit” on page 51 •• “1150 LCD front bezel” on page 66 •• “1160 LCD panel and hinges” on page 67 Figure 17.
Lenovo B550 Hardware Maintenance Manual 1180 Antenna assembly and LCD cover For access, remove these FRUs in order: •• “1010 Battery pack” on page 34 •• “1030 Memory/Wireless module/CPU (central processing unit) compartment cover” on page 37 •• “1080 PCI Express Mini Card for wireless LAN/WAN” on page 44 •• “1090 Keyboard cover and power board” on page 46 •• “1100 Keyboard” on page 49 •• “1110 LCD unit” on page 51 •• “1150 LCD front bezel” on page 66 •• “1160 LCD panel and hinges” on page 67 •• “1170 Integr
Lenovo B550 Locations Front view Integrated camera Array microphones (bulit-in) Wireless LAN antennas System status indicators Note: For the description of each indicator, see “Status indicators” on page 29.
Lenovo B550 Hardware Maintenance Manual Right-side view 1 USB port 2 Optical drive 3 AC power adapter jack 3 2 1 Bottom and Left-side view 1 2 3 4 5 6 7 8 9 J Battery latch - manual Battery pack Battery latch - spring loaded Memory/Wireless module/CPU compartment Kensington slot Fan louvers RJ-45 port VGA port USB port Hard disk drive (HDD) compartment 1 2 3 4 5 6 7 8 10 72 9
Lenovo B550 Parts list This section presents the following service parts: •• “Overall” on page 74 •• “LCD FRUs” on page 78 •• “Keyboard” on page 80 •• “Miscellaneous parts” on page 82 •• “AC adapters” on page 83 •• “Power cords” on page 84 Notes: • Each FRU is available for all types or models, unless specific types or models are specified.
Lenovo B550 Hardware Maintenance Manual Overall 1 3 2 4 5 f 6 a 9 7 10 8 11 g 12 h 13 14 15 16 17 18 b 21 c 19 20 22 74
Lenovo B550 Table 5. Parts list—Overall No. FRU 1 2 3 4 5 6 7 7 7 8 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 10 11 11 12 LCD unit (see “LCD FRUs” on page 78.) NIWAB STRIP COVER-TEXTURE 15.6 71ER NIWAB POWER BOARD W/FFC LOWEND 15.6 71ER Keyboard (see “Keyboard” on page 80.) Touch Pad, ALPS,KGDFF0014A NIWAB LOGIC UPPER ASSY-TEXTURE 15.6 71ER NIWAB M/B ASSY GM GS-W/BT DIS 15.6 NIWAB M/B ASSY GM W/BT UMA 15.
Lenovo B550 Hardware Maintenance Manual Table 5. Parts list—Overall (continued) No. FRU FRU no.
Lenovo B550 Table 5. Parts list—Overall (continued) No. FRU FRU no.
Lenovo B550 Hardware Maintenance Manual LCD FRUs In Lenovo B550, there are following types of LCDs. •• “15.6-in.
Lenovo B550 15.6-in. HD TFT Table 6. Parts list—15.6-in. HD TFT No. FRU FRU no. 1 2 3 3 3 3 3 4 5 6 7 NIWAB LCD BEZEL W/CMOS-TEXTURE 15.6 KIWA7 LCD BRACKET L&R LCD panel, 15.6 HD LED Panel,AUO,B156XW02 V2 LCD panel, 15.6 HD LED Panel,LGD,LP156WH2-TLAA LCD panel, 15.6 HD LED Panel,SEC,LTN156AT05-J01 LCD panel, 15.6 HD LED Panel,BOE,HT156WXB-100 LCD panel, 15.6 HD LED Panel,CMO,N156B6-L04(G) KIWA7 LVDS CABLE_LED NIWAB CAMERA 0.3M KIWA7 CAMERA CABLE DC02000RG00 NIWAB LCD COVER WO/ MIMO-TEXT 15.
Lenovo B550 Hardware Maintenance Manual Keyboard Table 7. Parts list—Keyboard Language New KB, add NM KB 80 JME English U.K.
Lenovo B550 Table 7. Parts list—Keyboard (continued) Language New KB, add NM KB (continued) Chicony B550 Low Cost KB Dafon English U.K.
Lenovo B550 Hardware Maintenance Manual Miscellaneous parts Table 8.
Lenovo B550 AC adapters Table 9. Parts list—3-pin AC adapters FRU P/N 65W, Delta ADP-65KH B adapter 65W, Liteon PA-1650-56LC adapter 65W, Brazil PA-1650-52LB adapter 65W, Chicony CPA-A065 20V3.25A adapter 90W, Delta ADP-90DD B adapter 90W, Liteon PA-1900-56LC adapter 90W, Chicony CPA-A090 20V4.
Lenovo B550 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 10.
Lenovo B550 Table 10. Parts list—3-pin power cords (continued) Region P/N Switzerland • Longwell LP-37+H03VV-F+LS-18 1m Brazil • Longwell LP-46+H03VV-F+LS-18 1m Israel • Longwell LP-41+H03VV-F+LS-18 1m UL • Longwell LP-30B+SPT-2 18AWG+LS-18 1m UL • Longwell LP-30B+SPT-2+LS-18 1.
Lenovo B550 Hardware Maintenance Manual Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used.
Notices Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary.
