Contents
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Page
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Second Edition March Copyright Lenovo
Contents
Locations
About this manual
Page
General safety
Safety information
Electrical safety
Safety inspection guide
Grounding requirements
Safety notices multilingual translations
Safety information
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Perigo
Perigo
Safety information
Vorsicht
Vorsicht
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Safety information
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Safety information
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Laser compliance statement multilingual translations
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Safety information
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Safety information
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Strategy for replacing FRUs
Important service information
Strategy for replacing a hard disk drive
How to use error message
Important notice for replacing a system board
General Announce Variant GAV
FRU identification for CTO, CMV, and GAV products
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
What to do first
General checkout
Checkout guide
Diagnostics using PC-Doctor for DOS
Testing the computer
Utility
Diagnostics Interactive Tests
Lenovo ThinkVantage Toolbox
Hardware Info
Applicable test
FRU tests
Power system checkout
Pin Voltage V dc
Checking the battery pack
Checking the ac adapter
Checking operational charging
Wire Voltage V dc
Checking the backup battery
Terminal Voltage V dc
Restoring the factory contents by using Recovery Disc Set
Related service information
Power-on password
Passwords
Hard-disk password
How to remove the power-on password
Supervisor password
How to remove the hard-disk password
Screen blank mode
Power management
Sleep standby mode
Symptom-to-FRU index
Hibernation mode
Numeric error codes
Error messages
Beep symptoms
LCD-related symptoms
No-beep symptoms
Intermittent problems
Undetermined problems
RAID Level 0 RAID 0 Striped disk array
Installing and configuring RAID
Supported RAID configurations
Creating RAID volumes
Deleting RAID volumes
Status indicators
Indicator Meaning
Indicator Meaning
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Key combination Description
Fn key combinations
For Windows Vista and Windows XP
For Windows
Power Option in the Control Panel or use the Power Manager
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Screw notices
FRU replacement notices
MTM on rear label
Retaining serial numbers
Restoring the serial number of the system unit
Retaining the Uuid
Eeprom
Reading or writing the ECA information
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Removing and replacing a FRU
Before servicing ThinkPad T520, T520i, and W520
Battery pack
Serial Ultrabay Enhanced device or travel bezel
For access, remove this FRU Battery pack on
Dimm slot cover
Dimm bottom slot
For ThinkPad T520 and T520i
For ThinkPad W520
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Step Screw quantity Color Torque
Keyboard
When installing the keyboard, do as follows
Removing and replacing a FRU
Dimm upper slot
Installation steps of keyboard
Removal steps of Dimm upper slot
PCI Express Mini Card for wireless LAN
Removal steps of PCI Express Mini Card for wireless LAN
When installing
PCI Express Mini Card for wireless WAN
Removal steps of PCI Express Mini Card for wireless WAN
Removal steps of ExpressCard blank bezel or ExpressCard
Keyboard bezel assembly
Removal steps of keyboard bezel assembly
Bluetooth daughter card BDC-3.0
Backup battery
Smart Card or Smart Card dummy spacer
Removal steps of Smart Card
Speaker assembly
Removal steps of speaker assembly
Removal steps of thermal module
Thermal module
For Switchable Graphics models
For Integrated Graphics models For Workstation models
1160 CPU
Removal steps of CPU
LCD unit
Step Screw cap Screw quantity Color Torque
M2 × 4 mm, wafer-head, nylon-coated Black 181 Nm Kgfcm
Base cover assembly
Removal steps of base cover assembly
1190 I/O sub card
Removal steps of I/O sub card
Important notices for handling the system board
Important notices for RAID setting
Location of major sensitive components on the system board
Removal steps of system board and magnesium structure frame
LCD bezel assembly
LED sub card
LCD cable, camera cable, LCD panel, and hinges
Integrated camera
LCD unit on LCD bezel assembly on
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Antenna kit and LCD rear cover assembly
Removal steps of antenna kit and LCD rear cover assembly
Front view
Locations
Rear view
Bottom view
ThinkPad T520, T520i, and W520 Hardware Maintenance Manual
Self-service CRUs
Parts list
Optional-service CRUs
Overall
CRU
CRU
FRU Overall FRU no
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
CRU
LCD FRUs
FRU ThinkPad T520, T520i and W520 LCD FRU no
CRU
CRU
CRU
CRU
CRU
Language FRU no
Miscellaneous parts
AC adapters
Power cords
Region
Recovery discs Windows 7 Home Basic 32 bit DVDs
Language
Windows 7 Home Premium 64 bit DVDs
Windows 7 Professional 32 bit DVDs
4281-CTO 4282-CTO, 29x, 3Px 4284-CTO
Windows 7 Professional 64 bit DVDs
Tool
Common service tools
Appendix A. Notices
Trademarks
Electronic emissions notices
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