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Lenovo K2450 Hardware Maintenance Manual - Lenovo K2450 Notebook - Page 34

Status indicators, The system status indicators below show the computer status

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Lenovo ZhaoYang K2450 Hardware Maintenance Manual Status indicators The system status indicators below show the computer status: cba 30

Section	Page
Contents	3
About this manual	4
Safety information	5
General safety	6
Electrical safety	7
Safety inspection guide	9
Handling devices that are sensitive to electrostatic discharge	10
Grounding requirements	10
Safety notices: multilingual translations	11
Laser compliance statement	18
Important service information	20
Strategy for replacing FRUs	20
Strategy for replacing a hard disk drive	21
Important notice for replacing a system board	21
Important information about replacing RoHS compliant FRUs	22
General checkout	23
What to do first	24
Power system checkout	25
Checking the AC adapter	25
Checking operational charging	25
Checking the battery pack	26
Related service information	27
Restoring the factory contents by using Recovery Disc Set	27
Start Recovery Disc (one disc)	27
Operating System Recovery Disc (one or more discs)	27
Applications and Drivers Recovery Disc (one or more discs)	27
Supplemental Recovery Disc	27
Passwords	28
Using passwords	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
Sleep mode	30
Hibernation mode	31
Shutting down the computer	31
Lenovo ZhaoYang K2450	32
Specifications	32
Features	32
Specifications	33
Status indicators	34
Special keys and buttons	36
Function key combinations	36
FRU replacement notices	38
Screw notices	38
Removing and replacing an FRU	39
1010 Keyboard	40
1020 Battery pack	42
1030 Dummy card	45
1040 Hard disk drive	46
1050 DIMM	48
1060 PCI Express Mini Card for wireless LAN/WAN and SSD card	49
1070 System board	51
1080 Fan assembly and Heat Sink assembly	55
1090 LCD unit	57
1100 Speaker, base cover, finger printer board, power assembly and LED board	59
1110 LCD front bezel	62
1120 LCD panel, LCD cable and hinges	63
1130 Integrated camera	65
1140 Antenna assembly and LCD cover	66
Locations	67
Front view	67
Bottom view	68
Left-side view	69
Right-side view	70
Parts list	71
Overall	72
LCD FRUs	76
Keyboard	78
AC adapters	80
Power cords	81
Notices	82

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Lenovo ZhaoYang K2450 Hardware Maintenance Manual

The system status indicators below show the computer status:

Status indicators