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. 
