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Contents
About this manual. . . . . . . . . . . iii
Chapter 1. Safety information . . . . . 1
General safety . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . 2
Safety inspection guide . . . . . . . . . . . 3
Handling devices that are sensitive to electrostatic
discharge. . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . 4
Laser compliance statement (multilingual
translations) . . . . . . . . . . . . . . . . 19
Chapter 2. Important service
information . . . . . . . . . . . . . . 27
Strategy for replacing FRUs . . . . . . . . . 27
Strategy for replacing a hard disk drive . . . 28
Important notice for replacing a system
board . . . . . . . . . . . . . . . . 28
Important information about replacing RoHS
compliant FRUs . . . . . . . . . . . . . . 28
Chapter 3. General checkout . . . . . 29
What to do rst . . . . . . . . . . . . . . 29
Power system checkout . . . . . . . . . . . 30
Checking the ac power adapter . . . . . . 30
Checking operational charging . . . . . . 31
Checking the battery pack . . . . . . . . 31
Chapter 4. Related service
information . . . . . . . . . . . . . . 33
Recovering the computer settings . . . . . . . 33
Passwords . . . . . . . . . . . . . . . . 33
Power-on password . . . . . . . . . . . 33
Supervisor password . . . . . . . . . . 33
Power management . . . . . . . . . . . . 34
Screen blank mode . . . . . . . . . . . 34
Sleep mode . . . . . . . . . . . . . . 34
Hibernation mode . . . . . . . . . . . 34
Chapter 5. Lenovo E49 and ZhaoYang
E49 . . . . . . . . . . . . . . . . . . 37
Specications . . . . . . . . . . . . . . . 37
Status indicators . . . . . . . . . . . . . . 38
Fn key combinations . . . . . . . . . . . . 39
Chapter 6. FRU replacement
notices . . . . . . . . . . . . . . . . 41
Screw notices . . . . . . . . . . . . . . . 41
Chapter 7. Removing and replacing a
FRU . . . . . . . . . . . . . . . . . . 43
General guidelines . . . . . . . . . . . . . 43
1010 Battery pack . . . . . . . . . . . . . 44
1020 Optical drive . . . . . . . . . . . . . 44
1030 Bottom slot cover . . . . . . . . . . . 46
1040 Memory modules . . . . . . . . . . . 46
1050 Hard disk drive assembly . . . . . . . . 47
1060 PCI Express Mini Card for wireless LAN . . 49
1070 Thermal fan assembly . . . . . . . . . 51
1080 Microprocessor . . . . . . . . . . . . 53
1090 Keyboard . . . . . . . . . . . . . . 54
1100 Keyboard bezel . . . . . . . . . . . . 57
1110 Power board . . . . . . . . . . . . . 59
1120 Backup battery . . . . . . . . . . . . 60
1130 System board assembly. . . . . . . . . 61
1140 LCD unit . . . . . . . . . . . . . . . 62
1150 DC-in cable and base cover . . . . . . . 65
2010 LCD front bezel . . . . . . . . . . . . 67
2020 Integrated camera . . . . . . . . . . . 69
2030 LCD panel, LCD cable, and hinges . . . . 69
2040 Antenna assembly and LCD rear cover . . . 71
Chapter 8. Locations . . . . . . . . . 73
Front view . . . . . . . . . . . . . . . . 73
Right-side view . . . . . . . . . . . . . . 74
Rear view. . . . . . . . . . . . . . . . . 74
Bottom and left-side view . . . . . . . . . . 75
Chapter 9. Parts list . . . . . . . . . . 77
Overall . . . . . . . . . . . . . . . . . . 78
LCD FRUs . . . . . . . . . . . . . . . . 81
Keyboard . . . . . . . . . . . . . . . . . 83
Miscellaneous parts . . . . . . . . . . . . 83
ac power adapters . . . . . . . . . . . . . 83
Power cords . . . . . . . . . . . . . . . 84
Appendix A. Notices. . . . . . . . . . 89
Electronic emissions notices . . . . . . . . . 90
Trademarks . . . . . . . . . . . . . . . . 90
© Copyright Lenovo 2012
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