Lenovo E4430 User Manual download pdf (Page 23)

Chapter 1. Product overview 9

Specifications

This topic lists the physical specifications for your computer.

Heat output

• 65 W (222 Btu/hr) or 90 W (307 Btu/hr) maximum heat output (depending on the model)

Power source (ac power adapter)

• Sine-wave input at 50 to 60 Hz

• Input rating of ac power adapter: 100 to 240 V ac, 50 to 60 Hz

Battery pack

• Lithium-ion (Li-ion) battery pack

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 75 76

User Guide 1
First Edition (August 2013) 2
Contents 3
Read this first 5
Important safety information 6
Safety guidelines 7
Power supply statement 9
External devices 9
General battery notice 9
Rechargeable battery notice 10
Heat and product ventilation 11
Laser compliance statement 12
Using headphones or earphones 13
Additional safety information 13
Chapter 1. Product overview 15
Left-side view 17
Right-side view 18
Front view 19
Rear view 19
Bottom view 20
Status indicators 21
Features 22
Specifications 23
Frequently asked questions 24
Registering your computer 26
Special keys and buttons 26
Function key combinations 26
Numeric keypad 28
Using the touch pad 28
Power management 29
Checking the battery status 29
Using the ac power adapter 29
Charging the battery 30
Maximizing the battery life 30
Power-saving modes 30
Handling the battery 31
Connecting to the network 33
Ethernet connection 33
Wireless connection 33
Using a flash media card 34
Using USB connectors 34
Accessibility and comfort 35
Ergonomic information 35
Chapter 4. Security 37
Chapter 5. Recovery overview 38
Chapter 6. Replacing devices 41
Replacing the hard disk drive 43
Replacing the keyboard 44
Replacing a memory module 48
Replacing the optical drive 51
38 User Guide 52
Taking care of your computer 53
Troubleshooting 57
Battery and power problems 57
Computer screen problems 58
Hard disk drive problems 59
A password problem 60
A sound problem 61
Other problems 61
ENERGY STAR model information 62
Wireless related information 63
Export classification notice 64
Electronic emission notices 64
China WEEE statement 67
Important WEEE information 67
European Union RoHS 69
China RoHS 69
Turkish RoHS 70
Ukraine RoHS 70
India RoHS 70
Appendix E. Notices 72
Trademarks 73
60 User Guide 74
Rev. AA00 76

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