Name:         PB 1400 PMU Updater

Version:      1.0.1

Released:     February 7, 1997

Description:

The PowerBook 1400 PMU Updater is a system extension that

remedies a potential problem with the contrast and

brightness controls on some PowerBook 1400's. Please refer

to the Read Me file included with with this software for

complete details.



This software consists of a self-extracting archive. To use,

download, double-click the downloaded file (this

decompresses it).



From the Read Me included with this software:



Important Information 

About the PowerBook 1400 PMU Updater



This document describes the PowerBook 1400 PMU Updater. You

may want to print this document for reference.



IMPORTANT  The PowerBook 1400 PMU Updater is preloaded on

your hard disk in the manufacturing process. If you

reinstall the system software, you must install this

extension separately if you are using System 7.5.3 or System

7.6. Be sure to save this disk (or a copy of the PowerBook

1400 PMU Updater) for this purpose.



What Is the PowerBook 1400 PMU Updater?



The PowerBook 1400 PMU Updater is a system extension that

remedies two situations which potentially can occur in some

Macintosh PowerBook 1400 computers. The conditions are:

* the contrast controls on the computer operate incorrectly,

so that pressing the upward-pointing end of the control

reduces contrast and pressing the downward-pointing end of

the control increases contrast.

* the brightness controls on the computer operate

incorrectly, so that pressing the upward-pointing end of the

control reduces brightness and pressing the

downward-pointing end of the control increases brightness.



Who Needs to Use the Updater?



The PowerBook 1400 PMU Updater corrects the conditions noted

above but does not change other parts of the system software

or hardware. If you reinstall the system software (System

7.5.3 or System 7.6), be sure to install the Updater on your

computer after the system installation, even if you have not

experienced these problems.  



To install the Updater, follow these steps.



1.  Drag the Updater to the icon of the System Folder on

your hard disk and click OK in the dialog box that appears.

2.  Restart the computer.



When the computer starts up, the Updater automatically

updates the parts of the system that potentially could cause

the situations noted above.





Copyright 1997  Apple Computer, Inc.  All rights reserved.

Apple, the Apple logo, Mac, Macintosh, and PowerBook are

trademarks of Apple Computer, Inc., registered in the U.S.

and other countries. All other product names are trademarks

or registered trademarks of their respective holders.

Mention of non-Apple products is for informational purposes

and constitutes neither an endorsement nor a recommendation.

Apple assumes no responsibility with regard to the

selection, performance, or use of these products. 

