Lenovo B490 Notebook- User Manual

About this manual This manual provides service and reference information for the following Lenovo ® products. Machine Machine type (MT) Lenovo B490, B4301, B4302, B4303, B4305, B4306,B4307, B4308, B4309, B4310, B4311, B4312, B4315,B4316, B4317, B4318, B4319, B4320, B4321, B4322,B4323, B4325, B4326, ...

Chapter 1. Safety information This chapter presents following safety information that you need to be familiar with before you service aLenovo Notebook.• “General safety” on page 1 • “Electrical safety” on page 2 • “Safety inspection guide” on page 3 • “Handling devices that are sensitive to electros...

Electrical safety 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 materialthat does not insulate you when working with live electrical currents.Many customers have, near their eq...

2. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective. When handling ESD-sensitive parts: • Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people. • Wear a grounded wrist strap against your s...

Laser compliance statement (multilingual translations) The laser compliance statements in this section are provided in the following languages:• English• Arabic• Brazilian Portuguese• French• German• Hebrew• Japanese• Korean• Spanish• Traditional Chinese Chapter 1 . Safety information 19

Chapter 2. Important service information This chapter presents the following important service information that applies to all machine types supportedby this manual:• “Strategy for replacing FRUs” on page 27 – “Strategy for replacing a hard disk drive” on page 28 – “Important notice for replacing a ...

• If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.Replace only the FRU that changed the symptoms. Strategy for replacing a hard disk drive Always...

Chapter 3. General checkout This chapter presents following information:• “What to do first” on page 29 • “Power system checkout” on page 30 Before you go to the checkout guide, be sure to read the following important notes. Important notes: • Only certified trained personnel should service the comp...

Note: Noise from the ac power adapter does not always indicate a defect. Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a batterypack that has less than 50% of the total power remaining when installed in the computer. Pe...

Chapter 4. Related service information This chapter presents the following information:• “Recovering the computer settings” on page 33 • “Passwords” on page 33 • “Power management” on page 34 Recovering the computer settings This topic provides information about the recovery programs that are availa...

If any of these passwords has been set, a prompt for it will be displayed on the screen whenever thecomputer is turned on. The computer does not start until the password is entered. Note: If only a supervisor password is set, the password prompt will not be displayed when the operating system is sta...

Note: The computer does not accept any input immediately after it enters sleep mode. Wait a few seconds before taking any action to reenter operation mode. Hibernation mode In hibernation mode, the following occurs: • The system status, RAM, VRAM, and setup data are stored on the hard disk drive. • ...

Chapter 5. Lenovo product information This chapter presents the product-specific service references and parts information for the computer. • “Specifications” on page 37 • “Status indicators” on page 38 • “Fn key combinations” on page 39 Specifications This topic lists the physical features for the ...

Optical drive • 12.7 mm Rambo optical drive Wireless features • Integrated wireless LAN • 100/1000 Mbps Ethernet communication Status indicators This chapter presents the system status indicators that show the status of the computer. 4 1 2 3 Table 1. Status indicators Indicator Meaning 1 Caps lock s...

Table 1. Status indicators (continued) Indicator Meaning 3 Device accessstatus indicator On: The hard disk drive or optical drive is reading or writing data. Attention: • When the indicator is on, do not put the computer into sleep mode or turn off the computer. • When the indicator is on, do not mo...

Chapter 6. FRU replacement notices This chapter presents notices related to removing and replacing parts. Read this chapter carefully beforereplacing any FRU. CRU statement for customers: You can resolve some problems with your product with a replacement part you can install yourself, calleda “Custo...

• Torque driver If you have a torque screwdriver, refer to the Torque column in the screw information table for each step. • Make sure that you use the correct screw. It is recommended to use new screws for replacements. If you have a torque screwdriver, tighten all screws firmly to the torque speci...

Chapter 7. Removing and replacing a FRU This chapter provides instructions on how to remove or replace a FRU. CRU statement for customers: You can resolve some problems with your product with a replacement part you can install yourself, calleda “Customer Replaceable Unit” or “CRU”. Some CRUs are des...

1010 Battery pack Removal steps of battery pack DANGER Use only the battery specified in the parts list for your computer. Any other battery could igniteor explode. Unlock the spring-loaded battery latch 1 . Holding the manual battery latch in the unlocked position, remove the battery pack in the di...

Removal steps of bottom slot cover Remove the screws 1 , and then remove the cover 2 . 1 1 2 2 Step Screw (quantity) Color Torque 1 M2 × 3 mm, flat-head, nylon-coated (2) Black 1.85 kgf-cm 1030 Optical drive For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020 Bottom slot ...

Insert a screwdriver into the screw hole 2 and push the optical drive in the direction shown by the arrow 3 . Then remove the optical drive. 3 2 Removal steps of optical drive bezel and optical drive bracket Remove the screw 1 and then remove the optical drive bracket. 1 2 Step Screw (quantity) Colo...

Removal steps of memory modules Release the two latches on both edges of the socket at the same time in the direction shown by the arrows 1 , and then unplug the memory module in the direction shown by the arrow 2 . 1 1 2 Note: If only one memory module is used on the computer you are servicing, the...

Removal steps of hard disk drive assembly Remove the screw 1 , then pull the tab in the direction shown by the arrow 2 . 1 2 Step Screw (quantity) Color Torque 1 M2 × 3 mm, flat-head, nylon-coated (1) Black 1.85 kgf-cm Remove the hard disk drive from the slot 3 . 3 When installing: Make sure that th...

Remove the hard disk drive bracket as shown by the arrow 2 . 2 1060 PCI Express Mini Card for wireless LAN For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020 Bottom slot cover” on page 44 Removal steps of PCI Express Mini Card for wireless LAN In steps 1 , disconnect the...

Remove the card in the direction shown by the arrow 3 . 3 When installing: Plug the black cable (MAIN) into the jack labeled A , and the white cable (AUX) into the jack labeled B on the card. 1070 mSATA solid-state drive For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020...

Remove the mSATA solid-state drive 2 . 2 1080 Backup battery For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020 Bottom slot cover” on page 44 Removal steps of backup battery DANGER Use only the battery specified in the parts list for your computer. Any other battery coul...

Removal steps of keyboard Remove the screws 1 . 1 1 1 When installing: Ensure that the screws have been fastened to secure the keyboard. Step Screw (quantity) Color Torque 1 M2.5 × 8 mm, flat-head, nylon-coated (3) Black 4.0 kgf-cm Push hard in the direction shown by the arrow 2 to unlatch the front...

Remove the keyboard in the direction shown by the arrow 3 . 3 Chapter 7 . Removing and replacing a FRU 53

Removal steps of keyboard bezel Remove the screws 1 and 2 that secure the keyboard bezel. 2 2 2 1 1 1 1 1 1 1 1 1 1 1 Step Screw (quantity) Color Torque 1 M2.5 × 8 mm, flat-head, nylon-coated (11) Black 4.0 kgf-cm 2 M2 × 3 mm, flat-head, nylon-coated (3) Black 1.85 kgf-cm Remove the screw 3 . 3 Step...

• “1090 Keyboard” on page 51 • “1100 Keyboard bezel” on page 54 Removal steps of LED board Peel off the mylar tape 1 . . 1 Remove the LED board 2 2 1120 Power board For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020 Bottom slot cover” on page 44 • “1030 Optical drive” on...

Removal steps of power board Remove the screw 1 and then remove the power board 2 . 2 1 Step Screw (quantity) Color Torque 1 M2 × 3 mm, flat-head, nylon-coated (1) Black 1.85 kgf-cm 1130 Microphone assembly For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020 Bottom slot c...

1140 Media card reader slot board For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1020 Bottom slot cover” on page 44 • “1030 Optical drive” on page 45 • “1090 Keyboard” on page 51 • “1100 Keyboard bezel” on page 54 Removal steps of the media card reader slot board Remove t...

Remove the media card reader slot board. 4 1150 System board assembly and USB 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 c...

Removal steps of system board assembly and USB board Remove the screws 1 , and then detach the connectors as shown in the following illustration. 1 1 3 4 2 5 8 9 1 7 6 Step Screw (quantity) Color Torque 1 M2 × 6 mm, flat-head, nylon-coated (2) Black 1.85 kgf-cm When installing: Ensure that all the c...

Removal steps of thermal module Detach the fan connector 1 . 1 When installing: Ensure that the connector is attached firmly. Loosen the screws 2 to 8 . 3 4 5 2 7 6 8 Chapter 7 . Removing and replacing a FRU 63

When installing: Before you attach the thermal module to the computer, apply thermal grease, at an amount of 0.2 grams, on the part marked a and b as shown in the following illustrations. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a co...

• “1100 Keyboard bezel” on page 54 • “1130 Microphone assembly” on page 58 • “1150 System board assembly and USB board” on page 60 • “1160 Thermal module” on page 62 Attention: The microprocessor is extremely sensitive. When you service the microprocessor, avoid any kind of rough handling. Removal s...

• “1130 Microphone assembly” on page 58 • “1140 Media card reader slot board” on page 59 • “1150 System board assembly and USB board” on page 60 Removal steps of LCD unit Release the antenna cables from the cable guides. Then remove the screws 1 . 1 1 1 1 Step Screw (quantity) Color Torque 1 M2.5 × ...

Removal steps of speaker assembly Remove the screws 1 . Then remove the speaker assembly 2 . 2 1 1 2 1 1 Step Screw (quantity) Color Torque 1 M2.5 × 5.7 mm, flat-head, nylon-coated (4) Black 4.0 kgf-cm 1200 DC-in connector and base cover For access, remove these FRUs in order:• “1010 Battery pack” o...

Removal steps of DC-in connector and base cover Remove the screws 1 , and then remove the DC-in connector in the direction shown by the arrow 2 . 2 1 1 Step Screw (quantity) Color Torque 1 M2 × 3 mm, flat-head, nylon-coated (2) Black 1.85 kgf-cm Applying labels to the base cover The new base cover i...

Removal steps of LCD front bezel Remove the screws 1 . 1 1 Step Screw (quantity) Color Torque 1 M2 × 3.5 mm, flat-head, nylon-coated (2) Black 1.85 kgf-cm Remove the LCD front bezel in the direction shown by the arrows 2 . 2 2 2 2 When installing: Ensure that all the latches are attached firmly. The...

Removal steps of camera Remove the camera from the LCD cover as shown in the following illustration. Note: The camera is stuck on the top center of the LCD cover. 1 2 When installing: Stick the camera to the top center of the LCD cover and adjust the placement to make sure that the connector is atta...

Removal steps of LCD panel and LCD cable Remove the screws 1 . Then remove the LCD panel with hinges in the direction shown by the arrow 2 . 1 1 1 1 2 1 1 Step Screw (quantity) Color Torque 1 M2 × 4 mm, flat-head, nylon-coated (6) White 1.85 kgf-cm Remove the screws 3 . Then remove the hinges 4 . 4 ...

Remove the LCD cable. 1 2 When installing: Ensure that the cable is attached firmly. 2040 Antenna assembly and LCD rear cover For access, remove these FRUs in order:• “1010 Battery pack” on page 44 • “1180 LCD unit” on page 66 • “2010 LCD front bezel” on page 71 • “2020 Camera” on page 72 • “2030 LC...

Chapter 8. Locations This chapter presents the locations of the hardware components. Front view 2 1 2 9 8 4 3 4 5 7 6 Figure 1. Front view 1 Integrated camera (on some models) 6 Touch pad and touch pad buttons 2 Wireless module antennas 7 Power and battery status indicator 1 3 Status indicators 1 8 ...

Right-side view 1 2 3 4 5 Figure 2. Right-side view 1 Combo audio jack 4 USB connector 2 USB connector 5 ac power connector 3 Optical drive Bottom and left-side view 4 5 6 7 8 10 9 1 2 3 Figure 3. Bottom and left-side view 1 Battery latch 6 Monitor connector 2 Battery pack 7 Ethernet connector 3 Bat...

Chapter 9. Parts list This chapter contains following lists of the service parts.• “Overall” on page 80 • “LCD FRUs” on page 84 • “Keyboard” on page 86 • “Miscellaneous parts” on page 89 • “ac power adapters” on page 89 • “Power cords” on page 91 Notes : • Each FRU is available for all types or mode...

Overall 1 2 3 5 6 7 10 d 9 c 8 11 e 12 13 14 15 f 17 18 21 g h 23 b 20 19 16 22 1 2 3 4 5 6 7 8 c e f g d a b 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Table 3. Parts list—Overall No. FRU (Overall) FRU no. CRUID 1 LCD unit (see “LCD FRUs” on page 84.) 2 LB48 Upper Case W/TP 6M.4TFCS.001 90200759 N 2 ...

Table 3. Parts list—Overall (continued) No. FRU (Overall) FRU no. CRUID 19 System board assembly for Brazil, Windows 8, Intel HM77, integrated, without SmallBusiness Advantage 04X1178 N 20 CPU, Intel I5-2520M, 2.5 G, 3M, 2c J1 PGA processor 102001067 N 20 CPU, Intel B815, 1.6 G, Q0, 2M 2cPGA process...

Table 4. Parts list - LCD (continued) No. FRU FRU no. CRUID 7 Panel for Brazil, 14.0 HD 04W400804W402304W400704W406404X1910 N 7 Panel, 14.0 HD, BOE HB140WX1-100 18200154 N 7 Panel, 14.0 HD, SEC LTN140AT26-L01 18200229 N 7 Panel, 14.0 HD, LGD LP140WH4-TLN1 18200156 N 7 Panel, 14.0 HD, IVO M140NWR2 R1...

Table 8. Parts list - Keyboard (Chicony) (continued) Language FRU NO.(Windows7) FRU NO.(Windows8) CRUID Swiss 25204427 25209327 N Spanish 25204406 25209306 N Thai 25204408 25209308 N Traditional Chinese 25204413 25209313 N Turkish 25204407 25209307 N U.K. English 25204403 25209303 N U.S. English 252...

Power cords A Lenovo power cord for a specific country or region is usually available only in that country or region. Table 14. Parts list - 3-pin power cords (Brazil) Country or region FRU no. CRUID Brazil 14500059614500056414500052714550002845N038142T517442T5177 * Table 15. Parts list - 3-pin powe...

Electronic emissions notices For electronic emission information on Class B digital devices, refer to the corresponding information inthe User Guide . EU contact: Lenovo, Einsteinova 21, 851 01 Bratislava, Slovakia Trademarks The following terms are trademarks of Lenovo in the United States, other c...