Lenovo B575 Support Question
Lenovo B575 Support Question
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Question posted by zodlste on February 3rd, 2014
How To Turn On Num Lock On Lenovo B575
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Answer #1: Posted by geekyankit1991 on February 3rd, 2014 1:09 PM
geekyankit1991
Member since:
December 16th, 2013 Points: 166,010
Member since:
December 16th, 2013 Points: 166,010
Your computer has a numeric keypad and function keys incorporated in its standard keyboard.
Numeric keypad The keyboard has a separate numeric keypad. To enable or disable the numeric keypad, press the Num Lock key.
The Num lock indicator will light on if the numeric keypad is enabled.
chaos hope it will help :-)
Tech freak
Related Lenovo B575 Manual Pages
Lenovo B575 Setup Poster V1.0 - Page 1
User Guide -
P/N:148500091 Printed in China
Lenovo B575
Setup Poster V1.0
Read the safety notices and important tips in the United ...the AC adapter.
3 Press the power button
B575
4 Configure the operating system following the on special features, see the Help file of Windows preinstalled computers should create a system recovery disc via Lenovo "OneKey Rescue system" as soon as a password...
Lenovo B575 Limited Warranty and Product Specific Notices V1.0 - Page 10
... Rules. Product specific notices
Electronic emissions notices
The following information refers to Lenovo B575, machine type 20119, 1450.
„ Federal Communications Commission (FCC) Statement...the interference by turning the equipment off and on a circuit different from Lenovo authorized dealers. These limits are available from that may cause undesired operation. Lenovo is not ...
Lenovo B575 User Guide V1.0 - Page 1
Lenovo B575
User Guide V1.0
Read the safety notices and important tips in the included manuals before using your computer.
Lenovo B575 User Guide V1.0 - Page 20
Chapter 2. Learning the basics
System status indicators
These indicators inform you of the computer status.
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B575
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a Caps lock indicator b Num lock indicator c Hard disk drive indicator d Power status indicator e Battery status indicator f Wireless communication indicator
16
Hardware Maintenance Manual - Page 3
... discs 23 Passwords 24 Power-on password 24 Supervisor password 24 Power management 25 Screen blank mode 25 Sleep (standby) mode 25 Hibernation mode 26
Lenovo B575 27 Specifications 27 Status indicators 29 Fn key combinations 31 FRU replacement notices 32
Screw notices 32 Removing and replacing an FRU 33
1010 Battery...
Hardware Maintenance Manual - Page 4
...problems effectively. Important: This manual is divided into the following Lenovo product:
Lenovo B575 Use this manual to troubleshoot problems. The manual is intended ..., guidelines, and safety
information required for trained servicers who are familiar with Lenovo products. Before servicing a Lenovo product, make sure to read all the information under "Safety information" on page 1...
Hardware Maintenance Manual - Page 6
... any object that weighs more than 16 kg (35 lb) or that you think is long, fasten it. • Insert the ends of the machine. Lenovo B575 Hardware Maintenance Manual
General safety
Follow these rules below to ensure general safety: • Observe a good housekeeping in the area where the machines are hammering...
Hardware Maintenance Manual - Page 8
... personal injury and machine damage.
• Do not service the following parts with the reflective surface of the units.)
• If an electrical accident occurs: - Lenovo B575 Hardware Maintenance Manual
• Always look carefully for possible hazards in a machine: -
Hardware Maintenance Manual - Page 10
..., and the person handling the part are all at the same charge. Protect against ESD damage is required for operator safety and correct system function.
Lenovo B575 Hardware Maintenance Manual
Handling devices that are sensitive to electrostatic discharge
Any computer part containing transistors or integrated circuits (ICs) should be verified by equalizing...
Hardware Maintenance Manual - Page 24
... normal use of an optical drive • Diskette drive damage caused by pressure on laptop products
The following information in the parts exchange form or parts return form that the system... drive becomes noisy, it : 1. Procedure index and page number in which the machine failed 4. Lenovo B575 Hardware Maintenance Manual
What to do first
When you do return an FRU, you must include the...
Hardware Maintenance Manual - Page 25
Turn off the computer. 6. Connect the AC adapter. 4.
To check the AC adapter, follow the steps below : 1. Measure the output voltage at the plug of the following : • Replace the system board. • If the problem continues, go to "Lenovo B575...indicate a defect. If the voltage is supplied when you turn on page 27. Turn off the computer. 2. See the
following figure:
Pin
...
Hardware Maintenance Manual - Page 26
...icon tray of the total power remains; Remove it may not be able to 30 KΩ. Turn off , replace the battery pack. Note: Recharging will be 4 to be charged. If ...battery, double-click the Power Meter icon. If the voltage is still off the computer. 2.
Lenovo B575 Hardware Maintenance Manual
Perform operational charging. Reinstall the battery pack. If the charge indicator or icon is...
Hardware Maintenance Manual - Page 28
...two passwords may be replaced for system recovery automatically.
The computer does not start until the password is turned on by an unauthorized person. Note: The recovery process might take up to complete the whole recovery ...system will enter the user interface for a scheduled fee.
24 Lenovo B575 Hardware Maintenance Manual
When you use the recovery discs to reset the password.
Hardware Maintenance Manual - Page 30
...the computer goes into hibernation mode, perform that action: - When the power is turned on the timer, and if the user does not do any operation with the ...; If a "hibernation time" has been set on , the computer returns from the hard disk drive.
26 Lenovo B575 Hardware Maintenance Manual
Hibernation mode
In hibernation mode, the following occurs: • The system status, RAM, VRAM,...
Hardware Maintenance Manual - Page 33
... computer into standby mode or
turn off the computer. c Drive in uppercase without
pressing the Shift key. When this indicator is being read from or written to the hard disk
drive, or the optical disk drive. Status indicators
Indicator
Meaning
a Caps lock White: Caps Lock mode is enabled. Lenovo B575
Status indicators
The system status...
Hardware Maintenance Manual - Page 34
Lenovo B575 Hardware Maintenance Manual
d Power on e Battery
status
f Wireless
status
White: System is less than 80% of its capacity. ...being charged with the remaining power between 5% and 20% of its capacity. Flashing white:
The wireless LAN radio is turned on and data is operating on and connected to AP. Off: The wireless LAN is switched off and the radio of it...
Hardware Maintenance Manual - Page 35
Fn key combinations
Key combination
Description
Fn + Esc:
Turn on /off).
Fn + F6:
Enable/Disable the touchpad. Fn + F9:... display brightness. Fn + F2:
Turn on/off the integrated camera.
Fn + PrtSc:
Activate the system request.
Table 4.
Fn + F1:
Enter sleep mode. Fn + Insert:
Enable/Disable the scroll lock. Lenovo B575
Fn key combinations
The following table shows...
Hardware Maintenance Manual - Page 36
... notices
Loose screws can cause a reliability problem. Tighten screws as follows: • Plastic to plastic
Turn an additional 90° after the screw head touches the surface of the plastic part:
more than 90...following country specifications.
32 If you removed. Lenovo B575 Hardware Maintenance Manual
FRU replacement notices
This section presents notices related to tighten. • Each one ....
Hardware Maintenance Manual - Page 37
...of the notes that pertain to replacement.
Attention: After replacing an FRU, do not turn off the computer, unplug all screws, springs, and other small parts are loose ... , electrostatic discharge. Metallic parts or metal flakes can be removed before the failing FRU. Lenovo B575
Removing and replacing an FRU
This section presents exploded figures with one hand or using an ...
Hardware Maintenance Manual - Page 38
Figure 1. Removal steps of the slot. Any other battery could ignite or explode. Lenovo B575 Hardware Maintenance Manual
1010 Battery pack
DANGER Only use the battery specified in the locked position.
34 Then make sure that the battery release lever is in the parts list for your computer. Holding the battery release lever in...
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