Epson Equity LT Dimensions

EPSON

Product Support Bulletin

Subject: Proper Method for Running Benchmark and Diagnostics Programs

Date: 06/04/93 PSB No: S-0158

Page(s): 1 of 1 Originator: MWT

This bulletin describes the proper method for running any benchmark or diagnostics

programs. This applies to any computer system.

In most cases, the computer should be started using an MS-DOS boot diskette

that’s ‘clean’ -

in other words, one with no CONFIG.SYS or AUTOEXEC.BAT files.

The appropriate executable can then be run, either from diskette or hard drive.

There will be some exceptions to the above rule. In attempting to benchmark or

troubleshoot any add-on that requires a device driver (CD-ROM, local area network,

etc.), obviously the necessary device driver(s) must be loaded. Also, some

programs will require a minimum number of FILES or BUFFERS to be defined in

the CONFIG.SYS file. Such programs will usually display this requirement if they

are run without the necessary CONFIG.SYS file.

For the most consistent results, use the absolute minimal boot configuration that’s

allowed by the hardware being tested.

Product Support Bulletin

Subject:

Equity LT Battery Life and the AdaptaPAK Battery Pack

Date:

9/7/89

Page:

1 of 2

PSB No.: S - 0096

Originator: BGB

(-7

;i4

The purpose of this bulletin is to provide the test results of the Product R&D’s

AdaptaPAK Battery and usage instructions.

Like the Equity LT’s internal battery,

(refer to PSB S- 0055) there are several usage variables that can have a

significant effect on the working time.

In this test, the Equity LT was configured with the 20MB hard disk drive and the

EL (electroluminescent) backlit LCD and set at 10 Mhz. This is the most popular

configuration and also the one that consumes the most power. The first test was

with heavy access, constantly using the hard disk and floppy disk.

The internal battery was previously discharged. The laptop and AdaptaPAK

battery were charged for 18 hours.

The battery charge lasted a total of 5 hours

and 15 minutes before it ceased operation.

The second test was with minimum access and the hard drive turned off after

powering on. The internal battery was previously discharged. The Equity LT and

the AdaptaPAK battery were charged for 18 hours. After turning on the unit, a

program that didn’t require any keyboard input was executed. The battery charge

lasted a total of 8 hours and 15 minutes before it ceased operation.

NOTE: The battery lives listed in this document are the results of our tests.

Your experience may vary as battery life is affected by configuration and

usage.

We can also assume that if we were to follow the guidelines (PSB S-0055, P3)

to extend the battery charge time, we would get even better results.

AdaptaPAK Battery

1) Ensure the battery is fully charged before using.

approximately 10 hours.

Full charge takes

2) The battery is a sealed lead - acid type.

3) The battery is contained in a black nylon carrying case with shoulder strap.

4) It plugs into a 120V AC outlet for charging. For overseas usage an

international 220V AC recharger is available.

PSB No: S-0096

Page: 2 of 2

5) Weight 7 Ibs, size 3 X 6 X 11 inches.

The product is manufactured and available from:

Product R&D Corporation

1194 Pacific St., Suite 201

San Luis Obispo, CA 93401

Phone: (805) 546 - 9713

The AdaptaPak product includes the ExtraPAK battery and AdaptaCORD. Both

are required for use with the Equity LT.

Epson Accessories, Inc. is considering the possibility of offering the AdaptaPAK

for resale.

PSB No.: S-0062I

Page: 1 of 18

EISA SERIES DESKTOP

VER PART # DESC TYPE LOC REASON

0.10.20.01 DESKRO Phoenix 27C512 U26 INITIAL RELEASE

EISA SERIES TOWER

VER PART # DESC TYPE LOC REASON

TOWERRO U26 INITIAL RELEASE

EQUITY LT

VER PART # DESC TYPE LOC REASON

1.00

HLO-A1

HLO-B1

27C64

INITIAL RELEASE (FIRST 800 UNITS)

1.01

Y164802001

Y164803001

HLO-A2

HLO-B2

27C64

Fixes problems with the serial port and

icrosoft Word.

EQUITY LT286e

VER PART # DESC TYPE LOC REASON

1.01

A I

27256

U18

U19

INITIAL RELEASE

EQUITY LT386SX

VER PART # DESC TYPE LOC REASON

1.02

A I

27C256

U13

U14

INITIAL RELEASE

NB3s

VER PART # DESC TYPE LOC REASON

040990-KO INITIAL RELEASE

EPSON

EPSON AMERICA, INC.

SERVICE

PRODUCT

SUPPORT

BULLETIN

PSB NO.: S-0055 DATE: 6/14/88 PAGE: 1 of 4

SUBJECT: EQUITY LT BATTERY LIFE

The purpose of this bulletin is to provide additional

information regarding battery charge life with the Equity LT.

There are several variables that can have a significant effect

on the working time obtainable from a charge. These include:

Configuration

I/O activity

Battery condition

Processor speed

Environment

Configuration

One of the more popular configurations of the Equity LT is the

hard disk drive model with the EL (electroluminescent) backlit

LCD.

Obviously, this is also the configuration that will

consume the most power and provide the shortest working time

on a charge. For example, here are some comparisons between

various configurations:

CONFIGURATION LOW BATTERY TOTAL LIFE

Dual FDD, Reflective LCD (NA) 6:00 Hours 7:00 Hours

Dual FDD, Reflective LCD (FA) 1:20 Hours 1:50 Hours

Dual FDD, Backlit LCD (NA) 5:20 Hours 6:lO Hours

Dual FDD, Backlit LCD (FA) 0:55 Hours 1:20 Hours

HDD, Reflective LCD (NA) 4:00 Hours 4:40 Hours

HDD, Reflective LCD (FA) 0:45 Hours 1:05 Hours

HDD, Backlit LCD (NA) 3:45 Hours 4:20 Hours

HDD, Backlit LCD (FA) 0:25 Hours 0:40 Hours

NA = No access: No activity including no keyboard input

FA =

Full access: "COPY A:*.* B:" or "COPY A:*.* C:"

(These times are a representative sampling. Depending on

configuration and usage, your times may vary.)

It's apparent that drive and backlight usage has a dramatic

effect on working time.

EPSON AMERICA SERVICE, 23610 TEL0 AVENUE, TORRANCE, CALIF. 90505

NUMBER: S-0055

PAGE:

2 of 4

Heavy use of the parallel, serial or RGB monitor ports can

also reduce working time. Functionally, this is of less

concern because devices that interface via these ports

(with the exception of battery-powered printers and modems)

will require AC power, allowing access to the LT's AC adapter.

Battery Condition

All NiCad batteries exhibit a phenomenon known as "memory".

Essentially, if the battery is recharged anumber of times

without being fully discharged, it "remembers" the shorter

times between charges. This is why you will see photographers

discharge their electronic flash units before putting them

away.

Processor Speed

The Equity LT employs the NEC V30 CPU, which is a low-power

CMOS 8086-compatible processor. However, the 10 MHz speed

setting will cause it to draw somewhat more power. In fact,

on a dual FDD LT with the reflective LCD, the difference

between 4.77 and 10 MHz can be as much as 48 minutes total

life.

Environment

Extremes in temperature and humidity can effect not only

battery charge life, but LCD performance as well. The standard

rule of thumb applies here: If it's comfortable for you, your

computer should function optimally.

NUMBER: S-0055

PAGE:

3 of 4

How to get the most out of the Equity LT

It is possible to extend the working battery charge time of

the Equity LT by following a few simple guidelines:

1) Turn the hard disk drive power OFF. For most applications,

constant access to the hard disk drive is not required.

Once the application is loaded into RAM, wait for the

drive access LED to go out and turn the HDD power switch

off.

When you're ready to save your work, turn the HDD

power switch back on, wait for the HDD to spin up and then

save.

Another alternative is to boot the LT from floppy

with the HDD power off. The power-on self-test will take

longer, and a"1701-C" error will display. This is normal

this situation and should be ignored.

l:cess your application from the FDD. Then you can

2) Set the backlight period to 0.5 minutes. This is

accomplished from the SETUP program. If you pause to think

about what you're doing, the backlight will turn off after

30 seconds. This drops power consumption by as much as

580mA. Also, set the brightness and contrast controls as

low as is comfortable. The difference between 1/2

brightness and full brightness can be as much as 445mA.

3) Run at 4.77 MHz. The difference in power consumption

between 4.77 MHz and 10 MHz is 70-80mA.

4) Completely discharge the battery. From time to time, let

the battery drain all the way down. When the LOW BATTERY

LED starts flashing, save your work in progress (if any)

and

then leave the LT powered up. Eventually, the power

supplied by the battery will drop below the threshold

level and the system will power down. Then give it a full

(12 hour) recharge. This will help to minimize the memory

effect.

NUMBER:

S-0055

PAGE:

4 of 4

5) Traveling Software has recently introduced a battery

monitoring

and

maintenance software package called

Battery Watch. This package has been written specifically

for a number of popular laptop systems, including the

Equity LT. Battery Watch provides the capability to:

Monitor battery life (and optionally set an audible alarm)

Customize the installation

Perform a "deep discharge" of the NiCad battery

It's a small (10-20KB) memory-resident program. For more

information, please contact:

Traveling Software, Inc.

19310 North Creek Parkway

Bothell, Wa. 98011

(206) 483-8088

By following the above guidelines, it is possible to achieve

working times well in excess of two hours with a hard drive,

backlit Equity LT.

EPSON

EPSON AMERICA, INC.

SERVICE P

RODUCT

UPPORT

ULLETIN

PSB NO.: S-0053

DATE: 6/1/88 PAGE: 1 of 1

SUBJECT:

EQUITY I+/II+/III+/LT DIAGNOSTIC "EXEC failed" MESSAGE

The purpose of this bulletin is to clarify the correct

usage of the DIAGNOSTIC DISK.

Many customers and dealers have contacted Epson's Technical

Support because of getting a"EXEC failed" error message

when trying to run the system diagnostics MEMORY test.

This occurs because many people are not booting the system

with the diagnostic disk but rather loading the diagnostic

program after booting from the MS-DOS system disk or hard

disk drive. In the instructions for performing system

diagnostics the following statement is made:

Note: To run the System diagnostics, boot your system with

the diagnostics diskette in drive A. Then select

option 4 from the OPERATION menu. If you start this

program in any other way, some tests may produce

strange results.

The "EXEC failed" error message will not occur if the

diagnostic diskette is properly loaded,

Please note that the diagnostic diskette should not be

modified in any way or similar results may occur.

If the diagnostics diskette was obtained through Epson

America's Training Department and does not contain the

system files then the system files should be copied to

the diagnostics disk before attempting to run the

diagnostic programs.

EPSON AMERICA SERVICE, 23610 TEL0 AVENUE, TORRANCE, CALIF. 90505

Product Support Bulletin

Subject:

Using Expanded Memory with Equity and Apex Computers

Date:

3/2/90

Page:

1 of 6

PSB No:

S-0047C

Originator:

KAS

‘/“p&

Q1.

What is Expanded Memory?

Conventional memory, managed by MS - DOS, is limited to 640K. In

response to the need for greater amounts of accessible memory, the

LIM EMS (Lotus/Intel/Microsoft Expanded Memory Specification) was

introduced in 1984. EMS, version 3.2, provides usable memory

beyond the 640K limit through “bank switching”. The expanded

memory is divided into 16K portions called “pages”. The computer

accesses these pages through a “page frame” or “window” which is

64K of memory located between 768K and 896K in 80286 - based

systems and between 800K and 960K in 8086 - or 8088 - based

systems.

16K pages of memory are allocated for an application’s

use and the EMM (Expanded Memory Manager) handles the job of

mapping the pages in and out of the page frame as they are

needed. However, in order to make use of expanded memory, the

software must be written to take advantage of the EMS. Software

such as Lotus 1 - 2 - 3, Microsoft Windows and Borland’s SideKick

Plus make use of expanded memory. EMS is limited to 8Mb of

expanded memory.

Q2.

What is EEMS?

A superset of EMS, AQA EEMS (AST/Quadram/Ashton - Tate

Enhanced Expanded Memory Specification) provides greater flexibility

in the mapping of expanded memory. However, it also uses the

technique of “bank switching” and has its own memory manager

which accommodates such specially written software as Quarterdeck’s

DESQview. EEMS is also limited to 8Mb of expanded memory.

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