Equipment information:

Lenovo ThinkPad L412 Notebook
Manufacturer:
Lenovo
Model: ThinkPad L412
Date: 2012
Category: Computer equipment
Group: Notebook
Description:
Information:
                                    

These manuals are available for the above equipment:

Lenovo -- ThinkPad L412 -- Service Manual
File name: Lenovo-4520-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 167
Size: 11.86 Mbytes (12438766 Bytes)
Language: english
Revision: first edition
Manual-ID/Number: 0A96085_03
Date: April 2012
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: e2ad42fa5596c7ab1d88027d63c2abea
ed2kID: 714c397b824f03ade61471cf76c27ed1
Downloads: 194 since 28 April 2013
Information:
About this manual
This manual contains service and reference information for the following ThinkPadĀ® Notebook products.
ThinkPad L412 MT 0530, 0553, 0585, 0591, 4403, and 4404
ThinkPad L512 MT 2550, 2597, 2598, 2599, 4444, and 4447
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important:
This manual is intended only for trained service technicians who are familiar with ThinkPad Notebook
products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a ThinkPad Notebook product, be sure to read all the information under Safety information
and Important service information.

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) . . . . . . . . . . . . . . . . 17
Chapter 2. Important service
information . . . . . . . . . . . . . . 23
Strategy for replacing FRUs . . . . . . . . . 23
Strategy for replacing a hard disk drive . . . 24
Important notice for replacing a system
board . . . . . . . . . . . . . . . . 24
How to use error message . . . . . . . . 24
Strategy for replacing FRUs for CTO, CMV, and
GAV . . . . . . . . . . . . . . . . . . . 24
Product definition . . . . . . . . . . . . 24
FRU identification for CTO, CMV, and GAV
products . . . . . . . . . . . . . . . 25
Chapter 3. General checkout . . . . . 27
What to do first . . . . . . . . . . . . . . 27
Checkout guide . . . . . . . . . . . . . . 28
System supporting the Lenovo ThinkVantage
Toolbox program and the PC-Doctor for DOS
diagnostics program . . . . . . . . . . 28
System supporting the Lenovo diagnostics
programs . . . . . . . . . . . . . . . 33
Power system checkout . . . . . . . . . . . 35
Checking the ac adapter . . . . . . . . . 35
Checking operational charging . . . . . . 36
Checking the battery pack . . . . . . . . 36
Checking the backup battery . . . . . . . 37
Chapter 4. Related service
information . . . . . . . . . . . . . . 39
Restoring the factory contents by using Recovery
Disc Set . . . . . . . . . . . . . . . . . 39
Passwords . . . . . . . . . . . . . . . . 40
Power-on password . . . . . . . . . . . 40
Hard-disk password. . . . . . . . . . . 40
Supervisor password . . . . . . . . . . 41
How to remove the power-on password . . . 41
How to remove the hard-disk password . . . 41
Power management . . . . . . . . . . . . 42
Screen blank mode . . . . . . . . . . . 42
Sleep (standby) mode . . . . . . . . . . 42
Hibernation mode . . . . . . . . . . . 43
Symptom-to-FRU index . . . . . . . . . . . 44
Numeric error codes . . . . . . . . . . 44
Error messages . . . . . . . . . . . . 46
No-beep symptoms . . . . . . . . . . . 46
LCD-related symptoms . . . . . . . . . 47
Intermittent problems . . . . . . . . . . 47
Undetermined problems . . . . . . . . . 48
Chapter 5. Status indicators . . . . . 49
Chapter 6. Fn key combinations . . . 51
Chapter 7. FRU replacement
notices . . . . . . . . . . . . . . . . 55
Screw notices . . . . . . . . . . . . . . . 55
Retaining serial numbers. . . . . . . . . . . 56
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 56
Retaining the UUID . . . . . . . . . . . 57
Reading or writing the ECA information . . . 57
Chapter 8. Removing and replacing a
FRU . . . . . . . . . . . . . . . . . . 59
1010 Battery pack . . . . . . . . . . . . . 59
1020 ExpressCard blank bezel and Media Card
blank bezel . . . . . . . . . . . . . . . . 61
1030 Optical drive or travel cover . . . . . . . 62
1040 Thermal cover. . . . . . . . . . . . . 63
1050 Hard disk drive (HDD) assembly . . . . . 64
1060 DIMM . . . . . . . . . . . . . . . . 65
1070 Fan assembly . . . . . . . . . . . . . 66
1080 CPU . . . . . . . . . . . . . . . . 69
1090 SIM slot cover . . . . . . . . . . . . 70
1100 Wireless WAN slot cover and PCI Express
Mini Card for wireless WAN. . . . . . . . . . 72
1110 Palm rest assembly with cables . . . . . . 74
1120 PCI Express Mini Card for wireless LAN . . 76
1130 Backup battery . . . . . . . . . . . . 78
1140 Bluetooth daughter card (BDC-2) . . . . . 78
1150 Media Card Reader slot board and Media
Card Reader cable assembly . . . . . . . . . 79
1160 Keyboard . . . . . . . . . . . . . . 81
1170 Keyboard bezel . . . . . . . . . . . . 83
1180 LCD unit . . . . . . . . . . . . . . . 85
1190 Top shielding assembly . . . . . . . . . 89
1200 System board assembly. . . . . . . . . 91
1210 USB connector board and USB cable
assembly . . . . . . . . . . . . . . . . . 96
1220 DC-in cable and base cover . . . . . . . 98
2010 LCD front bezel . . . . . . . . . . . . 102
2020 Speaker assembly . . . . . . . . . . . 103
2030 Integrated camera . . . . . . . . . . . 104
2040 Antenna assembly . . . . . . . . . . . 104
2050 Hinges, LCD panel, LCD cable, and LCD rear
cover assembly . . . . . . . . . . . . . . 106
Chapter 9. Locations . . . . . . . . 111
Front view . . . . . . . . . . . . . . . . 112
Rear view. . . . . . . . . . . . . . . . . 113
Bottom view . . . . . . . . . . . . . . . 113
Chapter 10. Parts list . . . . . . . . 115
Overall . . . . . . . . . . . . . . . . . . 116
LCD FRUs . . . . . . . . . . . . . . . . 138
Keyboard . . . . . . . . . . . . . . . . . 144
Miscellaneous parts . . . . . . . . . . . . 145
ac power adapters . . . . . . . . . . . . . 146
Power cords . . . . . . . . . . . . . . . 147
Recovery discs . . . . . . . . . . . . . . 148
Windows XP Professional (32 bit) DVDs . . . 148
Windows Vista Home Basic (32 bit) DVDs . . 149
Windows Vista Business (32 bit) DVDs . . . 149
Windows 7 Home Basic (32 bit) DVDs. . . . 150
Windows 7 Home Premium (32 bit) DVDs . . 151
Windows 7 Home Premium (64 bit) DVDs . . 151
Windows 7 Professional (32 bit) DVDs. . . . 152
Windows 7 Professional (64 bit) DVDs. . . . 153
Windows Starter (32 bit) DVDs. . . . . . . 154
Windows 7 Ultimate (32 bit) DVDs . . . . . 155
Windows 7 Ultimate (64 bit) DVDs . . . . . 155
Common service tools . . . . . . . . . . . 156
Appendix A. Notices . . . . . . . . . 157
Electronic emissions notices . . . . . . . . . 158
Trademarks . . . . . . . . . . . . . . . . 158
Lenovo-4520-Manual-Page-1-Picture
Start Free Download


Comments

No comments yet.

Add Comment

* Required information
(never displayed)
 
Bold Italic Underline Strike Superscript Subscript Quote Line Bullet Link Email Image Video
 
Smile Sad Huh Laugh Mad Tongue Crying Grin Wink Scared Cool Sleep Blush Unsure Shocked
 
1000
Is it true or false that green is a number?
 
Enter answer:
 
Notify me of new comments via email.
 
Remember my form inputs on this computer.
 
 
Powered by Commentics