Table Of Contents - Lenovo ThinkPad L412 Hardware Maintenance Manual

Contents
About this manual . . . . . . . . . . v
Safety information . . . . . . . . . . 1
General safety . . . .
Electrical safety . . .
Safety inspection guide .
Handling devices that are sensitive to electrostatic
discharge . . . . .
Grounding requirements .
Safety notices (multilingual translations) .
Laser compliance statement (multilingual
translations) . . . .
Important service information . . . . . 39
Strategy for replacing FRUs .
Strategy for replacing a hard disk drive .
Important notice for replacing a system board .
How to use error message
Strategy for replacing FRUs for CTO, CMV, and
GAV. . . . . . .
Product definition .
FRU identification for CTO, CMV, and GAV
products . . . .
General checkout . . . . . . . . . . 43
What to do first . . .
Checkout guide . . .
Diagnostics using PC-Doctor for DOS
Lenovo ThinkVantage Toolbox (Lenovo System
Toolbox) . . . .
PC-Doctor for Rescue and Recovery .
FRU tests . . . .
Power system checkout .
Checking the ac adapter .
Checking operational charging .
Checking the battery pack
Checking the backup battery
Related service information . . . . . . 55
Restoring the factory contents by using Recovery
Disc Set . . . . .
Passwords . . . . .
Power-on password
Hard-disk password
Supervisor password .
How to remove the power-on password .
How to remove the hard-disk password .
Power management .
Screen blank mode .
Sleep (standby) mode .
Hibernation mode .
Symptom-to-FRU index .
Numeric error codes .
Error messages . .
© Copyright Lenovo 2009, 2010
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No-beep symptoms .
LCD-related symptoms
Intermittent problems .
Undetermined problems .
. 2
. 3
Status indicators . . . . . . . . . . 69
. 5
Fn key combinations
. 6
. 6
. 7
FRU replacement notices . . . . . . . 75
Screw notices .
. 28
Retaining serial numbers .
Restoring the serial number of the system unit
Retaining the UUID
. 39
Reading or writing the ECA information
. 40
. 40
Removing and replacing a FRU . . . . 79
. 40
1010 Battery pack .
1020 ExpressCard blank bezel and Media Card
. 41
blank bezel .
. 41
1030 Optical drive or travel cover .
1040 Thermal cover.
. 41
1050 Hard disk drive (HDD) assembly .
1060 DIMM .
1070 Fan assembly .
. 44
1080 CPU . .
. 45
1090 SIM slot cover.
. 45
1100 Wireless WAN slot cover and PCI Express Mini
Card for wireless WAN .
. 48
1110 Palm rest assembly with cables .
. 48
1120 PCI Express Mini Card for wireless LAN .
. 49
1130 Backup battery .
. 51
1140 Bluetooth daughter card (BDC-2) .
. 51
1150 Media Card Reader slot board and Media
. 51
Card Reader cable assembly .
. 52
1160 Keyboard .
. 52
1170 Keyboard bezel .
1180 LCD unit .
1190 Top shielding assembly .
1200 System board assembly .
1210 USB connector board and USB cable assembly 129
. 55
1220 DC-in cable and base cover .
. 56
2010 LCD front bezel .
. 57
2020 Speaker assembly .
. 57
2030 Integrated camera .
. 57
2040 Antenna assembly .
. 57
2050 Hinges, LCD panel, LCD cable, and LCD rear
. 58
cover assembly .
. 60
. 60
Locations . . . . . . . . . . . . . 145
. 60
. 61
Front view . .
. 62
Rear view . .
. 62
Bottom view. .
. 65
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