Lenovo B575e, Руководство по техническому обслуживанию аппаратной части, Страница: 3 / 102

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 first . . . . . . . . . . . . . . 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 B575e . . . . . . . 37
Specifications . . . . . . . . . . . . . . . 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
1010 Battery pack . . . . . . . . . . . . . 43
1020 Bottom slot cover . . . . . . . . . . . 44
1030 Hard disk drive . . . . . . . . . . . . 45
1040 Optical drive . . . . . . . . . . . . . 46
1050 Memory modules . . . . . . . . . . . 47
1060 PCI Express Mini Card for wireless LAN . . 48
1070 Backup battery . . . . . . . . . . . . 50
1080 Keyboard . . . . . . . . . . . . . . 51
1090 Keyboard bezel . . . . . . . . . . . . 54
1100 LED board and power board . . . . . . . 58
1110 Microphone assembly . . . . . . . . . 59
1120 I/O board and RJ45 Ethernet board . . . . 59
1130 System board assembly. . . . . . . . . 63
1140 LCD unit . . . . . . . . . . . . . . . 65
1150 Thermal fan assembly . . . . . . . . . 67
1160 Speaker assembly . . . . . . . . . . . 69
1170 DC-in sub card and base cover . . . . . . 70
2010 LCD front bezel . . . . . . . . . . . . 72
2020 Integrated camera . . . . . . . . . . . 74
2030 LCD panel, LCD cable, and hinges . . . . 74
2040 Antenna assembly . . . . . . . . . . . 76
Chapter 8. Locations . . . . . . . . . 79
Front view . . . . . . . . . . . . . . . . 79
Bottom view . . . . . . . . . . . . . . . 80
Chapter 9. Parts list . . . . . . . . . . 81
Overall . . . . . . . . . . . . . . . . . . 82
LCD FRUs . . . . . . . . . . . . . . . . 84
Keyboard . . . . . . . . . . . . . . . . . 85
Miscellaneous parts . . . . . . . . . . . . 88
ac power adapters . . . . . . . . . . . . . 88
Power cords . . . . . . . . . . . . . . . 88
Appendix A. Notices . . . . . . . . . . 93
Electronic emissions notices . . . . . . . . . 94
Trademarks . . . . . . . . . . . . . . . . 94
© Copyright Lenovo 2012 i