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Contents
About this manual. . . . . . . . . . . . v
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 denition. . . . . . . . . . . . 24
FRU identication for CTO, CMV, and GAV
products . . . . . . . . . . . . . . . 25
Chapter 3. General checkout . . . . . 27
What to do rst . . . . . . . . . . . . . . 27
Checkout guide . . . . . . . . . . . . . . 28
Diagnostics using PC-Doctor for DOS. . . . 28
Lenovo ThinkVantage Toolbox . . . . . . . 30
FRU tests . . . . . . . . . . . . . . . 31
Power system checkout . . . . . . . . . . . 32
Checking the ac adapter . . . . . . . . . 33
Checking operational charging . . . . . . 33
Checking the battery pack . . . . . . . . 33
Checking the backup battery . . . . . . . 34
Chapter 4. Related service
information . . . . . . . . . . . . . . 35
Restoring the factory contents by using Recovery
Disc Set . . . . . . . . . . . . . . . . . 35
Passwords . . . . . . . . . . . . . . . . 36
Power-on password . . . . . . . . . . . 36
Hard-disk password. . . . . . . . . . . 36
Supervisor password . . . . . . . . . . 37
How to remove the power-on password . . . 37
How to remove the hard-disk password . . . 37
Power management . . . . . . . . . . . . 38
Screen blank mode . . . . . . . . . . . 38
Sleep (standby) mode . . . . . . . . . . 38
Hibernation mode . . . . . . . . . . . 39
Symptom-to-FRU index . . . . . . . . . . . 39
Numeric error codes . . . . . . . . . . 40
Error messages . . . . . . . . . . . . 41
Beep symptoms . . . . . . . . . . . . 42
No-beep symptoms . . . . . . . . . . . 43
LCD-related symptoms . . . . . . . . . 43
Intermittent problems . . . . . . . . . . 43
Undetermined problems . . . . . . . . . 44
Chapter 5. Installing and conguring
RAID . . . . . . . . . . . . . . . . . . 45
Supported RAID congurations . . . . . . . . 45
Conguring the system UEFI BIOS to enable
embedded SATA RAID functionality . . . . . . 45
Creating RAID volumes . . . . . . . . . . . 45
Deleting RAID volumes . . . . . . . . . . . 46
Chapter 6. Status indicators . . . . . 47
Chapter 7. Fn key combinations . . . 51
Chapter 8. FRU replacement
notices . . . . . . . . . . . . . . . . 55
Screw notices . . . . . . . . . . . . . . . 55
Retaining serial numbers. . . . . . . . . . . 56
Restoring the serial number of the system
unit . . . . . . . . . . . . . . . . . 56
Retaining the UUID . . . . . . . . . . . 56
Reading or writing the ECA information . . . 57
Chapter 9. Removing and replacing a
FRU . . . . . . . . . . . . . . . . . . 59
Before servicing ThinkPad T520, T520i, and
W520 . . . . . . . . . . . . . . . . . . 60
1010 Battery pack . . . . . . . . . . . . . 60
1020 Serial Ultrabay Enhanced device or travel
bezel . . . . . . . . . . . . . . . . . . 61
1030 DIMM slot cover. . . . . . . . . . . . 62
1040 DIMM (bottom slot). . . . . . . . . . . 63
1050 Hard disk drive slot cover, hard disk drive
(HDD) and HDD rubber rails or solid state drive
(SSD) and storage converter . . . . . . . . . 65
1060 Keyboard . . . . . . . . . . . . . . 67
1070 DIMM (upper slot) . . . . . . . . . . . 70
1080 PCI Express Mini Card for wireless LAN . . 71
© Copyright Lenovo 2011
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