Lenovo 3000 J Series Manual

Hardware Maintenance Manual
Lenovo 3000 J Series
Types7387, 7388, 7389, 7390, 7391, 7392,
7393, 7394, 7395, 7396, 7397, 7398            

Lenovo 3000 J Series 
   
 
 
    

Note: Before using this information and the product it supports, be sure to read the 
information under “Notices,” on page 211.
   
Seventh Edition (August 2007) 
© Copyright Lenovo 2006. Portions © Copyright International Business Machines Corporation 2005, 2006. All rights reserved. 
LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted...

Contents 
Chapter 1. About this manual   . . . . .1 
Important Safety Information . . . . . . . . .1 
Important information about replacing RoHS 
compliant FRUs 
 . . . . . . . . . . . . .2 
Chapter 2. Safety information 
 . . . . .3 
General safety 
 . . . . . . . . . . . . . .3 
Electrical safety 
 . . . . . . . . . . . . .3 
Safety inspection guide 
 . . . . . . . . . . .5 
Handling electrostatic discharge-sensitive devices 
 . .6 
Grounding requirements 
 . . . . . . . . . .6 
Safety notices...

Replacing the system board (Types 7390, 7391, and 
7392)   . . . . . . . . . . . . . . . . 129 
Replacing the microprocessor (Types 7396, 7397, 
and 7398) . . . . . . . . . . . . . . . 132 
Replacing the microprocessor (Types 7390, 7391, 
and 7392) . . . . . . . . . . . . . . . 136 
Replacing the hard disk drive 
 . . . . . . . . 140 
Replacing an optical drive 
 . . . . . . . . . 141 
Replacing the diskette drive 
 . . . . . . . . 142 
Replacing the power switch/ LED assembly 
 . . . 143 
Replacing the...

Chapter 1. About this manual 
This manual contains service and reference information for Lenovo™ computers 
listed on the cover. It is intended only for trained servicers who are familiar with 
Lenovo computer products. 
Before servicing a Lenovo product, be sure to read the Safety Information. See 
Chapter 2, “Safety information,” on page 3. 
The Symptom-to-FRU Index and Additional Service Information chapters are not 
specific to any machine type and are applicable to all Lenovo computers. 
This manual...

Important information about replacing RoHS compliant FRUs 
RoHS, The Restriction of Hazardous Substances in Electrical and Electronic 
Equipment Directive (2002/95/EC) is a European Union legal requirement 
affecting the global electronics industry. RoHS requirements must be 
implemented on Lenovo products placed on the market after June 2006. Products 
on the market before June 2006 are not required to have RoHS compliant parts. 
So, if the parts are not compliant originally, replacement parts can also...

Chapter 2. Safety information 
This chapter contains the safety information that you need to be familiar with 
before servicing a computer. 
General safety 
Follow these rules to ensure general safety: 
v   
 Observe good housekeeping in the area of the machines during and after 
maintenance. 
v 
 
 When lifting any heavy object: 
1. 
 
 Ensure you can stand safely without slipping. 
2. 
 
 Distribute the weight of the object equally between your feet. 
3. 
 
 Use a slow lifting force. Never move...

CAUTION: 
Electrical current from power, telephone, and communication cables can be 
hazardous. To avoid personal injury or equipment damage, disconnect the 
attached power cords, telecommunication systems, networks, and modems before 
you open the server/workstation covers, unless instructed otherwise in the 
installation and configuration procedures. 
Observe the following rules when working on electrical equipment. 
Important:   Use only approved tools and test equipment. Some hand tools have 
handles...