Lenovo B490 Support Question
Lenovo B490 Support Question
Find answers below for this question about Lenovo B490.Need a Lenovo B490 manual? We have 1 online manual for this item!
Question posted by anandrajar11 on March 12th, 2015
Replace Keyboard
How to remove and attach keyboard
Current Answers
Answer #1: Posted by waelsaidani1 on March 12th, 2015 10:44 AM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,797
Member since:
May 12th, 2013 Points: 19,501,797
Related Lenovo B490 Manual Pages
Hardware Maintenance Manual - Page 3
...79
Overall 80 LCD FRUs 83 Keyboard 85 Miscellaneous parts 87 ac ...Right-side view 78 Bottom and left-side view 78
Chapter 9. Lenovo B490 37
Specifications 37 Status indicators 38 Fn key combinations 39
Chapter 6. General.... . 4 Laser compliance statement (multilingual translations 19
Chapter 2. Removing and replacing a FRU 43
General guidelines 43 1010 Battery pack 44 1020 Bottom...
Hardware Maintenance Manual - Page 7
...Replace any safety device that is long, fasten it. • Insert the ends of your necktie or scarf inside clothing or fasten it with your hair is worn or defective. • Reinstall all personnel, while you are not in a hazardous position. • Place removed...'s personnel are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in the area of...
Hardware Maintenance Manual - Page 34
..., and may be used : identified as copying, saving, or formatting. Important information about replacing RoHS compliant FRUs
RoHS, The Restriction of a system board can be used .
•...Must be RoHS
Replacement FRU Must be RoHS compliant. That is a European Union legal requirement affecting the global electronics industry. Before replacing the adapter or device, remove the FRUs, one...
Hardware Maintenance Manual - Page 35
...Customer's name and address
Note: During the warranty period, the customer may be overwritten. • Replace a FRU only with the computer, determine whether the damage is a list of a single, unreproducible...with another FRU of purchase 5. Date on removing and replacing FRUs. • When you attach to replace a nondefective FRU. Failing FRU name and part number 7. Chapter 3. Date of...
Hardware Maintenance Manual - Page 36
Remove... does not charge during operation, go to Chapter 5 "Lenovo B490" on page 37.
30 Hardware Maintenance Manual Connect the ac ...attachment of a nonsupported device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products
The following :
• Replace...
Hardware Maintenance Manual - Page 40
...mode automatically: • If a "suspend time" has been set , the password prompt will be replaced for a scheduled fee. Note: If only a supervisor password is started . Power management
Note: Power ... person.
To end screen blank mode and resume normal operation, press any operation with the keyboard,
the hard disk drive, the parallel connector, or the diskette drive within that time. ...
Hardware Maintenance Manual - Page 43
...Status indicators" on page 38 • "Fn key combinations" on some models for the Lenovo B490 models.
Chapter 5.
then
click Properties. • Windows 8: From the desktop, move the ...computer, click Start, right-click Computer; LCD: 1366-by -1536 • Camera
Keyboard • 6-row Lenovo keyboard • Recovery button
Interface • Combo audio jack (stereo headphone or headset)...
Hardware Maintenance Manual - Page 45
...the functions of the computer screen. Has the same function as the Pause key on a conventional keyboard. When the battery charge level reaches 80%, the battery status indicator stops blinking, but the ...F12 Fn+PgUp Fn+PrtSc Fn+Home
Description Launches the camera and audio settings window. Lenovo B490 39 Sudden physical shock might continue until the battery is 100% charged.
• Slow ...
Hardware Maintenance Manual - Page 57
... 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 backup battery
DANGER Use only the battery specified in order: • "1010...
Hardware Maintenance Manual - Page 58
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...
Hardware Maintenance Manual - Page 59
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.
Hardware Maintenance Manual - Page 60
... 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...
Hardware Maintenance Manual - Page 61
Color Black
Torque 1.85 kgf-cm
9 4 5
6 7
When installing: Ensure that all the connectors are attached firmly. Chapter 7. Removing and replacing a FRU 55
Remove the screw 3 .
3
Step 3
Screw (quantity) M2 × 6 mm, flat-head, nylon-coated (1)
Detach the connectors.
Hardware Maintenance Manual - Page 63
Removing and replacing a FRU 57 Removal steps of LED board Peel off the mylar tape 1 . 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.
Hardware Maintenance Manual - Page 64
...mm, flat-head, nylon-coated (1)
Color Black
Torque 1.85 kgf-cm
1130 Microphone assembly
For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom ...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 ...
Hardware Maintenance Manual - Page 65
... 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...
Hardware Maintenance Manual - Page 71
... state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51
Chapter 7. Removing and replacing a FRU 65 For models with a discrete thermal module
a
b
For models with a component. When installing: Before you attach the thermal module to imperfect contact with an integrated thermal module
a
1170 CPU
For access...
Hardware Maintenance Manual - Page 75
Removing and replacing a FRU 69 Then remove the speaker assembly 2 .
1 2 1
1
2
1
Step 1
Screw (quantity) M2.5 × 5.7 mm, flat-head, nylon-coated (4)
1200 DC-in connector and base cover
For access, remove these FRUs...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 ...
Hardware Maintenance Manual - Page 85
...are available from Lenovo at http://www.lenovo.com/UserManuals. If you might include the memory module, wireless card, keyboard, and palm rest with a replacement part you . You can be charged for all types or models, unless otherwise specified.
• A CRU ... CRUs is visible.
© Copyright Lenovo 2012
79 Once the access panel is removed, the specific CRU is your product.
Hardware Maintenance Manual - Page 89
...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.) ...Power Board 55.4TF05.001G
LB49B Fingerprint Board 22 Keyboard (see "ac power adapters" on page 88.)
FRU no.
Parts list-Overall (continued)...
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