Lenovo B575e User Manual

Note:Noisefromtheacpoweradapterdoesnotalwaysindicateadefect.
Checkingoperationalcharging
Tocheckwhetherthebatterychargesproperlyduringoperation,useadischargedbatterypackorabattery
packthathaslessthan50%ofthetotalpowerremainingwheninstalledinthecomputer.
Performoperationalcharging.Ifthebatterystatusindicatororicondoesnotturnon,removethebattery
packandletitreturntoroomtemperature.Reinstallthebatterypack.Ifthechargeindicatororiconstilldoes
notturnon,replacethebatterypack.
Ifthechargeindicatorstilldoesnotturnon,replacethesystemboard.Thenreinstallthebatterypack.Ifitis
stillnotcharged,gotothenextsection.
Checkingthebatterypack
ThebatterystatusiconintheWindows
®
noticationareadisplaysthepercentageofbatterypowerremaining.
Tomaximizethebatterylife,thecomputerdoesnotstarttorechargethebatteryifthereamingbattery
powerisgreaterthan95%.
Tocheckthedetailedbatterystatusinformation,dothefollowing:
•Windows7:LaunchthePowerManagerprogramandclicktheBatterytab.
•Windows8:
–PresstherecoverybuttontolaunchtheLenovoSolutionCenterprogram,andthenclickBattery.
–LaunchtheLenovoSettingsprogramfromtheStartscreen,andthenclickPower.
Note:Ifthebatterypackbecomeshot,itmaynotbeabletobecharged.Removeitfromthecomputerand
leaveitatroomtemperatureforawhile.Afteritcoolsdown,reinstallandrechargeit.
Tocheckthebatterypack,dothefollowing:
1.Poweroffthecomputer.
2.Removethebatterypackandmeasurethevoltagebetweenbatteryterminals1(+)and7(-).Seethe
followinggure:
Terminal
Voltage(Vdc)
1+0to+14
7
Ground(-)
1(+)
2(+)
3
4
5
6(-)
7(-)
3.Ifthevoltageislessthan+11.0Vdc,thebatterypackhasbeendischarged.
Note:Rechargingwilltakeatleast3hours,eveniftheindicatordoesnotturnon.
Ifthevoltageisstilllessthan+11.0Vdcafterrecharging,replacethebattery.
4.Ifthevoltageismorethan+11.0Vdc,measuretheresistancebetweenbatteryterminals5and7.
Theresistancemustbe4to30KΩ.
Chapter3.Generalcheckout31

Lenovo B575e Specifications

General

Processor cache	1 MB
Processor cores	2
Processor model	E2-1800
Processor family	AMD E
Processor frequency	1.7 GHz
Processor cache type	L2
Processor manufacturer	AMD
Motherboard chipset	AMD A70M
Internal memory	4 GB
Internal memory type	DDR3-SDRAM
Maximum internal memory	- GB
HDD speed	5400 RPM
HDD interface	SATA
Storage media	HDD
Optical drive type	DVD-RW
Card reader integrated	Yes
Total storage capacity	500 GB
Number of HDDs installed	1
Display diagonal	15.6 \
Display resolution	1366 x 768 pixels
Native aspect ratio	16:9
Contrast ratio (typical)	10000:1
LightScribe	-
Infrared data port	No
On-board graphics card model	AMD Radeon HD 7340G
On-board graphics card family	AMD Radeon HD 7000
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Networking features	Gigabit Ethernet
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Charging port type	DC-in jack
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
eSATA/USB 2.0 ports quantity	0
Pointing device	Touchpad
Operating system installed	Windows 7 Home Premium
Operating system architecture	64-bit
Form factor	Clamshell
Product color	Black
Battery life (max)	- h

Weight and Dimensions

Weight	2500 g