Lenovo ThinkPad T61 User Manual

Appendix B. Customer Replaceable Units (CRUs)
Customer Replaceable Units (CRUs) are computer parts that can be upgraded
or replaced by the customer. There are two types of CRUs: internal and
external. External CRUs are easy to install, whereas internal CRUs require
some technical skills and in some cases might require tools such as a
screwdriver. However, both internal and external CRUs are safe for removal
by the customer.
Customers are responsible for replacing all external CRUs. Internal CRUs can
be removed and installed by customers or by a Lenovo service technician
during the warranty period.
Your computer contains the following types of external CRUs:
v External CRUs (pluggable): These CRUs unplug from the computer.
Examples of these types of CRUs include the ac adapter and power cord.
v External CRUs with latches: These CRUs include a latch to help you
remove and replace the part. Examples of these types of CRUs include the
notebook main battery and Ultrabay devices such as an optical drive, a
hard-disk drive, and an extended battery.
Your computer contains the following types of internal CRUs:
v Internal CRUs (located behind an access panel): These CRUs are isolated
parts within the computer that are concealed by an access panel that is
typically secured by either one or two screws. Once the access panel is
removed, only the specific CRU is visible. Examples of these types of CRUs
include memory modules and hard disk drives.
v Internal CRUs (located within the product): These CRUs are accessible
only by opening the computer’s outer case. Examples of these CRUs
include PCI Express Mini Cards and the integrated keyboard.
Online Access Help provides instructions for replacing internal and external
CRUs. To start the Access Help program, click Start, move the pointer to All
Programs (in Windows 2000, Programs); then to ThinkVantage. Click Access
Help.
Additionally, the Service and Troubleshooting Guide (this guide) and Setup
Instructions provide instructions for several critical CRU’s.
If you are unable to access these instructions or if you have difficulty
replacing a CRU, you can use either of the following additional resources:
© Copyright Lenovo 2007 57

Lenovo ThinkPad T61 Specifications

General

Bus type	FSB
Tjunction	100 °C
Processor cache	4 MB
Processor cores	2
Processor model	T7300
Processor family	Intel® Core™2 Duo
Processor series	Intel Core 2 Duo T7000 Series
Processor socket	PBGA479, PPGA478
Processor codename	Merom
Processing Die size	143 mm²
Processor frequency	2 GHz
Processor cache type	L2
Processor lithography	65 nm
Processor manufacturer	Intel
Processor front side bus	800 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	35 W
CPU multiplier (bus/core ratio)	10
Number of Processing Die Transistors	291 M
HDD speed	5400 RPM
HDD interface	SATA
Optical drive type	DVD-ROM
Total storage capacity	80 GB
Display diagonal	14.1 \
Display resolution	1280 x 800 pixels
Native aspect ratio	16:10
Modem speed	56 Kbit/s
Wireless technology	IEEE 802.11a/g/n
Memory slots	2x SO-DIMM
Internal memory	1 GB
Internal memory type	DDR2-SDRAM
Maximum internal memory	4 GB
CD write speed	24 x
DVD read speed	8 x
Audio system	High Definition Audio
Networking features	Gigabit Ethernet
Bundled software	Sun JRE, ThinkVantage Access Connections, ThinkVantage Client Security Solution, ThinkVantage Productivity Center, ThinkVantage Rescue & Recovery, ThinkVantage System Update, Norton Internet Security 2007 (OEM), PC-Doctor diagnostics, Adobe Acrobat Reader, Diskeeper 9.0 Home Edition, Lotus Notes Stand-alone Client, Picasa - Google
Operating system installed	Windows Vista Business
Battery life (max)	3 h
Number of battery cells	4
Charging port type	DC-in jack
Serial ports quantity	0
USB 2.0 ports quantity	3
CardBus PCMCIA slot type	Type II
Cable lock slot type	IBM
Pointing device	ThinkPad UltraNav
Discrete graphics card model	Intel® GMA X3100
Processor ARK ID	29760
Processor package size	35 x 35 mm

Weight and Dimensions

Depth	255 mm
Width	357.5 mm
Height	30 mm
Weight	2300 g