Dell™ Precision™ T3500 Service Manual

Working on Your Computer

Adding and Replacing Parts

Specifications

Diagnostics

About Your System Board

System Setup

Notes, Cautions, and Warnings

U

NOTE: A NOTE indicates important information that helps you make better use of your computer.

△

CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.

↑

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.

Information in this document is subject to change without notice. $ ^{©} $ 2009 Dell Inc. All rights reserved.

Reproduction of this material in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, and Dell Precision are trademarks of Dell Inc.; Intel and Xeon are registered trademarks of Intel Corporation; Bluetooth is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license; Blu-ray Disc is a trademark of the Blu-ray Disc Association; Microsoft, Windows, Windows Server, MS-DOS, Aero, Windows Vista, and the Windows Vista start button are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

Model DCTA

September 2009 Rev. A01

About Your System Board Dell Precision™ T3500 Service Manual

☐

Password Enable Jumper

O

NVRAM Reset Jumper

☀

System Board Schematic

!

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.

Your computer's system board offers two jumpers—a password enable jumper and a RTCRST (Real Time Clock Reset) jumper.

Password Enable Jumper

PSWD - Password enable. The system password will be cleared and disabled when the system is started with this jumper removed.

Pins 1-2 shorted enables password

NVRAM Reset Jumper

RTCRST - Clears NVRAM. The NVRAM will be cleared when the jumper is closed (use the jumper from the password bridge). To properly clear: AC power must be applied (not necessarily turned on) to the system for about 10 seconds while the