Hardware Maintenance Manual
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... the ac power adapter 30 Checking operational charging 31 Checking the battery pack 31 Chapter 4. Notices 93 Electronic emissions notices 94 Trademarks 94 © Copyright Lenovo 2012 i General checkout . . . . . 29 What to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations) . . . . . 4 Laser compliance statement (multilingual... Mini Card for replacing a system board 28 Important information about replacing RoHS compliant FRUs 28 Chapter 3. Lenovo B490 37 Specifications 37 Status indicators 38 Fn key combinations 39 Chapter 6.
... the ac power adapter 30 Checking operational charging 31 Checking the battery pack 31 Chapter 4. Notices 93 Electronic emissions notices 94 Trademarks 94 © Copyright Lenovo 2012 i General checkout . . . . . 29 What to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations) . . . . . 4 Laser compliance statement (multilingual... Mini Card for replacing a system board 28 Important information about replacing RoHS compliant FRUs 28 Chapter 3. Lenovo B490 37 Specifications 37 Status indicators 38 Fn key combinations 39 Chapter 6.
Hardware Maintenance Manual
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...on page 1 and Chapter 2 "Important service information" on page 27. © Copyright Lenovo 2012 iii Use this manual to troubleshoot problems effectively. • Before servicing a Lenovo product, be sure to troubleshoot problems. The manual is intended only for servicing computers. ... includes service, reference, and product-specific parts information. Important: • This manual is divided into the following Lenovo® products. Machine Lenovo B490 Machine type (MT) 3756, 3772, 20205, 20207 Use this manual This manual provides service and reference information for...
...on page 1 and Chapter 2 "Important service information" on page 27. © Copyright Lenovo 2012 iii Use this manual to troubleshoot problems effectively. • Before servicing a Lenovo product, be sure to troubleshoot problems. The manual is intended only for servicing computers. ... includes service, reference, and product-specific parts information. Important: • This manual is divided into the following Lenovo® products. Machine Lenovo B490 Machine type (MT) 3756, 3772, 20205, 20207 Use this manual This manual provides service and reference information for...
Hardware Maintenance Manual
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... force, or dropped. To check the ac power adapter, do the following : • Replace the system board. • If the problem persists, go to Chapter 5 "Lenovo B490" on page 37. 30 Hardware Maintenance Manual Turn off the computer. 6. Remove the battery pack. 3. Turn off the computer. 2. Disconnect the ac power adapter and...
... force, or dropped. To check the ac power adapter, do the following : • Replace the system board. • If the problem persists, go to Chapter 5 "Lenovo B490" on page 37. 30 Hardware Maintenance Manual Turn off the computer. 6. Remove the battery pack. 3. Turn off the computer. 2. Disconnect the ac power adapter and...
Hardware Maintenance Manual
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... From the desktop, move the cursor to the top-right or bottom-right corner of your computer, click Start, right-click Computer; Lenovo B490 This chapter presents the following product-specific service references and parts information: • "Specifications" on page 37 • "Status indicators" ...on page 38 • "Fn key combinations" on some models for the Lenovo B490 models. Memory • Double data rate 3 (DDR3) synchronous dynamic random access memory (SDRAM) Storage device • 2.5-inch (7 mm height or...
... From the desktop, move the cursor to the top-right or bottom-right corner of your computer, click Start, right-click Computer; Lenovo B490 This chapter presents the following product-specific service references and parts information: • "Specifications" on page 37 • "Status indicators" ...on page 38 • "Fn key combinations" on some models for the Lenovo B490 models. Memory • Double data rate 3 (DDR3) synchronous dynamic random access memory (SDRAM) Storage device • 2.5-inch (7 mm height or...
Hardware Maintenance Manual
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... to the next track Enables or disables the scroll lock function. Chapter 5. To disable the feature, press Fn+F2. Enables or disables the numeric keypad. Lenovo B490 39 Fn key combinations The following table describes the functions of the computer screen. Enables or disables the built-in wireless networking features. Puts the...
... to the next track Enables or disables the scroll lock function. Chapter 5. To disable the feature, press Fn+F2. Enables or disables the numeric keypad. Lenovo B490 39 Fn key combinations The following table describes the functions of the computer screen. Enables or disables the built-in wireless networking features. Puts the...
Hardware Maintenance Manual
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Front view 2 1 2 4 9 8 3 4 7 6 5 Figure 1. Lenovo B490 front view 1 Integrated camera (on some models) 2 Wireless module antennas 3 Status indicators 1 4 Speakers 5 Media card reader slot 6 Touch pad and touch pad buttons 7 Power and battery indicator1 8 Power button 9 Recovery button 1 For the description of the Lenovo B490 hardware components. Chapter 8. Locations This chapter presents the locations of the indicators, see "Status indicators" on page 38. © Copyright Lenovo 2012 77
Front view 2 1 2 4 9 8 3 4 7 6 5 Figure 1. Lenovo B490 front view 1 Integrated camera (on some models) 2 Wireless module antennas 3 Status indicators 1 4 Speakers 5 Media card reader slot 6 Touch pad and touch pad buttons 7 Power and battery indicator1 8 Power button 9 Recovery button 1 For the description of the Lenovo B490 hardware components. Chapter 8. Locations This chapter presents the locations of the indicators, see "Status indicators" on page 38. © Copyright Lenovo 2012 77
Hardware Maintenance Manual
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Lenovo B490 right-side view 1 Combo audio jack 2 USB connector 3 Optical drive Bottom and left -side view 1 Battery latch 2 Battery pack 3 Battery lock 4 Security keyhole 5 Fan louvers 6 Monitor connector 7 Ethernet connector 8 HDMI port 9 USB connectors 10 Bottom slot cover1 1 The memory modules, hard disk drive, and wireless cards are located underneath the bottom slot cover. 78 Hardware Maintenance Manual Lenovo B490 bottom and left -side view 45 3 12 4 USB connector 5 ac power connector 1 2 3 10 4 5 8 76 9 Figure 3. Right-side view Figure 2.
Lenovo B490 right-side view 1 Combo audio jack 2 USB connector 3 Optical drive Bottom and left -side view 1 Battery latch 2 Battery pack 3 Battery lock 4 Security keyhole 5 Fan louvers 6 Monitor connector 7 Ethernet connector 8 HDMI port 9 USB connectors 10 Bottom slot cover1 1 The memory modules, hard disk drive, and wireless cards are located underneath the bottom slot cover. 78 Hardware Maintenance Manual Lenovo B490 bottom and left -side view 45 3 12 4 USB connector 5 ac power connector 1 2 3 10 4 5 8 76 9 Figure 3. Right-side view Figure 2.
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... N 90001937 N 102001067 N 102500229 N 102500228 N 102500018 N 102500017 N 102500016 N 102500015 N 102001065 N 102500230 N 102500101 N 102500133 N 102500350 N 102500301 N 102500303 N 102500362 N 102500440 N 102500433 N 102500421 N 102500435 N 90000220 N 90000979 N LCD FRUs In Lenovo B490 models, the type of LCD is 14-inch high definition (HD) TFT LCD (Table 4 "Parts list LCD" on page 85.) - ac power adapter (see "Keyboard...
... N 90001937 N 102001067 N 102500229 N 102500228 N 102500018 N 102500017 N 102500016 N 102500015 N 102001065 N 102500230 N 102500101 N 102500133 N 102500350 N 102500301 N 102500303 N 102500362 N 102500440 N 102500433 N 102500421 N 102500435 N 90000220 N 90000979 N LCD FRUs In Lenovo B490 models, the type of LCD is 14-inch high definition (HD) TFT LCD (Table 4 "Parts list LCD" on page 85.) - ac power adapter (see "Keyboard...