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