Hardware Maintenance Manual
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...drive . . . 28 Important notice for wireless LAN . . 49 1070 mSATA solid state drive 50 1080 Backup battery 51 1090 Keyboard 51 1100 Keyboard bezel 54 1110 LED board 56 1120 Power board 57 1130 Microphone assembly 58 1140 I/O board 59 1150 System board assembly and ...mode 34 Hibernation mode 35 Chapter 5. Lenovo B490 37 Specifications 37 Status indicators 38 Fn key combinations 39 Chapter 6. Notices 93 Electronic emissions notices 94 Trademarks 94 © Copyright Lenovo 2012 i Parts list 79 Overall 80 LCD FRUs 83 Keyboard 85 Miscellaneous parts 87 ac power ...
...drive . . . 28 Important notice for wireless LAN . . 49 1070 mSATA solid state drive 50 1080 Backup battery 51 1090 Keyboard 51 1100 Keyboard bezel 54 1110 LED board 56 1120 Power board 57 1130 Microphone assembly 58 1140 I/O board 59 1150 System board assembly and ...mode 34 Hibernation mode 35 Chapter 5. Lenovo B490 37 Specifications 37 Status indicators 38 Fn key combinations 39 Chapter 6. Notices 93 Electronic emissions notices 94 Trademarks 94 © Copyright Lenovo 2012 i Parts list 79 Overall 80 LCD FRUs 83 Keyboard 85 Miscellaneous parts 87 ac power ...
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... of the ac power adapter for correct continuity and installation. • If the computer does not charge during operation, go to Chapter 5 "Lenovo B490" on page 37. 30 Hardware Maintenance Manual If you are here because the computer fails only when the ac power adapter is supplied when you... cable from the one you suspect a power problem, see the appropriate one of the following symptoms might indicate damage caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on page 31. Measure the output voltage at the plug of the ac power adapter cable. 3 ...
... of the ac power adapter for correct continuity and installation. • If the computer does not charge during operation, go to Chapter 5 "Lenovo B490" on page 37. 30 Hardware Maintenance Manual If you are here because the computer fails only when the ac power adapter is supplied when you... cable from the one you suspect a power problem, see the appropriate one of the following symptoms might indicate damage caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on page 31. Measure the output voltage at the plug of the ac power adapter cable. 3 ...
Hardware Maintenance Manual
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... by an unauthorized person. Power-on password A power-on password protects the system from sleep mode and resume the operation, do any operation with the keyboard, the hard disk drive, the parallel connector, or the diskette drive within that time. • If the battery indicator blinks orange, indicating that the battery...
... by an unauthorized person. Power-on password A power-on password protects the system from sleep mode and resume the operation, do any operation with the keyboard, the hard disk drive, the parallel connector, or the diskette drive within that time. • If the battery indicator blinks orange, indicating that the battery...
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.... • Pressing the power button. Chapter 4. Also, when the time set on the timer, and if the user does not do any operation with the keyboard, the hard disk drive, the parallel connector, or the diskette drive within that time. • If the timer conditions are stored on the hard disk...
.... • Pressing the power button. Chapter 4. Also, when the time set on the timer, and if the user does not do any operation with the keyboard, the hard disk drive, the parallel connector, or the diskette drive within that time. • If the timer conditions are stored on the hard disk...
Hardware Maintenance Manual
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...Keyboard • 6-row Lenovo keyboard • Recovery button Interface • Combo audio jack (stereo headphone or headset) • Two USB 2.0 connectors • Two USB 3.0 connectors • RJ45 Ethernet connector • HDMI port • External monitor connector • 4-in-1 digital media card reader slot © Copyright Lenovo 2012 37 External monitor: Maximum 2048-by -768 - Lenovo B490..."Status indicators" on page 38 • "Fn key combinations" on some models for the Lenovo B490 models. Processor • Windows 7: To view the system properties of the screen to the ...
...Keyboard • 6-row Lenovo keyboard • Recovery button Interface • Combo audio jack (stereo headphone or headset) • Two USB 2.0 connectors • Two USB 3.0 connectors • RJ45 Ethernet connector • HDMI port • External monitor connector • 4-in-1 digital media card reader slot © Copyright Lenovo 2012 37 External monitor: Maximum 2048-by -768 - Lenovo B490..."Status indicators" on page 38 • "Fn key combinations" on some models for the Lenovo B490 models. Processor • Windows 7: To view the system properties of the screen to the ...
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... • Integrated wireless LAN • Integrated Bluetooth (on some models) • Integrated WiMAX • 100/1000 Mbps Ethernet communication Security feature Fingerprint Reader (on the keyboard is enabled. To enable or disable Caps Lock mode, press the Caps Lock key. 2 Numeric Lock White: The separate numeric keypad on some models) Status...
... • Integrated wireless LAN • Integrated Bluetooth (on some models) • Integrated WiMAX • 100/1000 Mbps Ethernet communication Security feature Fingerprint Reader (on the keyboard is enabled. To enable or disable Caps Lock mode, press the Caps Lock key. 2 Numeric Lock White: The separate numeric keypad on some models) Status...
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...: Stop Multimedia control: Skip to the previous track Multimedia control: Skip to switch between the computer display and an external monitor. Lenovo B490 39 Fn key combinations The following table describes the functions of the computer screen. When the battery charge level reaches 20%, the ... is reading or writing data. To disable the feature, press Fn+F2. Has the same function as the SysRq key on a conventional keyboard. Sudden physical shock might continue until the battery is 100% charged. • Slow blinking orange: The battery charge level is between 20...
...: Stop Multimedia control: Skip to the previous track Multimedia control: Skip to switch between the computer display and an external monitor. Lenovo B490 39 Fn key combinations The following table describes the functions of the computer screen. When the battery charge level reaches 20%, the ... is reading or writing data. To disable the feature, press Fn+F2. Has the same function as the SysRq key on a conventional keyboard. Sudden physical shock might continue until the battery is 100% charged. • Slow blinking orange: The battery charge level is between 20...
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Fn + left/right arrow Increases or decreases the sound volume. 40 Hardware Maintenance Manual Fn+PgDn Activates the insert function. Function key combinations (continued) Key combination Description Fn+End Has the same function as the Break key on a conventional keyboard. Table 2. Fn + up/down arrow Increases or decreases the display brightness level.
Fn + left/right arrow Increases or decreases the sound volume. 40 Hardware Maintenance Manual Fn+PgDn Activates the insert function. Function key combinations (continued) Key combination Description Fn+End Has the same function as the Break key on a conventional keyboard. Table 2. Fn + up/down arrow Increases or decreases the display brightness level.
Hardware Maintenance Manual
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... the connector 1 , and then remove the battery pack in the direction shown by the arrow 2 . 2 1 When installing: Ensure that the connector is attached firmly. 1090 Keyboard For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom slot cover" on page 44 Removal steps of...
... the connector 1 , and then remove the battery pack in the direction shown by the arrow 2 . 2 1 When installing: Ensure that the connector is attached firmly. 1090 Keyboard For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom slot cover" on page 44 Removal steps of...
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Step 1 Screw (quantity) M2.5 × 8 mm, flat-head, nylon-coated (3) Color Black Torque 4.0 kgf-cm Push hard in the direction shown by the arrow 2 to secure the keyboard. Removal steps of keyboard Remove the screws 1 . 1 1 1 When installing: Ensure that the screws have been fastened to unlatch the front side of the keyboard. 2 When installing: Ensure that the keyboard connector is attached firmly. 52 Hardware Maintenance Manual
Step 1 Screw (quantity) M2.5 × 8 mm, flat-head, nylon-coated (3) Color Black Torque 4.0 kgf-cm Push hard in the direction shown by the arrow 2 to secure the keyboard. Removal steps of keyboard Remove the screws 1 . 1 1 1 When installing: Ensure that the screws have been fastened to unlatch the front side of the keyboard. 2 When installing: Ensure that the keyboard connector is attached firmly. 52 Hardware Maintenance Manual
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Removing and replacing a FRU 53 Remove the keyboard in the direction shown by the arrow 3 . 3 Carefully lift the keyboard until you can see how it's connected. Hold the keyboard above the computer 4 , and then detach the keyboard connector. 4 6 5 Chapter 7.
Removing and replacing a FRU 53 Remove the keyboard in the direction shown by the arrow 3 . 3 Carefully lift the keyboard until you can see how it's connected. Hold the keyboard above the computer 4 , and then detach the keyboard connector. 4 6 5 Chapter 7.
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1100 Keyboard bezel 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 Removal steps of keyboard bezel Remove the screws 1 and 2 that secure the keyboard bezel. 2 2 2 11 1 1 1 1 1 1 1 1 1 Step 1 2 Screw (quantity) M2.5 × 8 mm, flat-head, nylon-coated (11) M2 × 3 mm, flat-head, nylon-coated (3) Color Black Black Torque 4.0 kgf-cm 1.85 kgf-cm 54 Hardware Maintenance Manual
1100 Keyboard bezel 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 Removal steps of keyboard bezel Remove the screws 1 and 2 that secure the keyboard bezel. 2 2 2 11 1 1 1 1 1 1 1 1 1 Step 1 2 Screw (quantity) M2.5 × 8 mm, flat-head, nylon-coated (11) M2 × 3 mm, flat-head, nylon-coated (3) Color Black Black Torque 4.0 kgf-cm 1.85 kgf-cm 54 Hardware Maintenance Manual
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Remove the keyboard bezel. 10 1110 LED 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 56 Hardware Maintenance Manual
Remove the keyboard bezel. 10 1110 LED 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 56 Hardware Maintenance Manual
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Removal steps of LED board Peel off the mylar tape 1 . Removing and replacing a FRU 57 Then remove the LED board 2 . 1 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 page 45 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 Chapter 7.
Removal steps of LED board Peel off the mylar tape 1 . Removing and replacing a FRU 57 Then remove the LED board 2 . 1 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 page 45 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 Chapter 7.
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... 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 microphone assembly Detach the connector 1 , and then remove the microphone assembly in the direction shown by...
... 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 microphone assembly Detach the connector 1 , and then remove the microphone assembly in the direction shown by...
Hardware Maintenance Manual
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Removing and replacing a FRU 59 1140 I/O 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 I/O board Remove the screws 1 , and then detach the cable. 1 1 2 3 Step 1 Screw (quantity) M2 × 6 mm, flat-head, nylon-coated (2) Color Black When installing: Ensure that the cable is attached firmly to the system board. Torque 1.85 kgf-cm Chapter 7.
Removing and replacing a FRU 59 1140 I/O 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 I/O board Remove the screws 1 , and then detach the cable. 1 1 2 3 Step 1 Screw (quantity) M2 × 6 mm, flat-head, nylon-coated (2) Color Black When installing: Ensure that the cable is attached firmly to the system board. Torque 1.85 kgf-cm Chapter 7.
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... notices for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on a padded surface such as an ESD mat or a corrugated conductive surface.
... notices for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on a padded surface such as an ESD mat or a corrugated conductive surface.
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... LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 58 • "1150 System board assembly and USB board" on page 60 62...
... LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 58 • "1150 System board assembly and USB board" on page 60 62...
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... Card for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 Chapter 7. Removing and replacing a FRU 65 When installing: Before you attach the thermal module to the computer, apply thermal grease, at an...
... Card for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 Chapter 7. Removing and replacing a FRU 65 When installing: Before you attach the thermal module to the computer, apply thermal grease, at an...
Hardware Maintenance Manual
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... Card for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 62 Attention: The CPU is extremely sensitive. • "1100... Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 58 • "1150 System board assembly and USB board" on page 60 • "1160 Thermal ...
... Card for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 62 Attention: The CPU is extremely sensitive. • "1100... Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 58 • "1150 System board assembly and USB board" on page 60 • "1160 Thermal ...
