Epson Equity 286 PLUS Dimensions

EPSON

Product Support Bulletin

Subject: Equity Series SIMM Compatibility

Date: 12/4/91

Page(s): 1 of 1

PSB No: S-0136

Originator: JAD

Due to the influx of third party SlMMs on the market, there are some that are not

compatible with Epson products. This bulletin is intended to be an aid in ensuring

that only compatible SlMMs are chosen for use in Epson’s Equity Series of

computers.

The SlMMs in question were SEIMENS, CUMULUS and KINGSTON. Installing these

SlMMs in Epson products may cause the following errors:

Parity Check 1

18FFFE 0000 202 Memory Address Error

164 System Options Not

Set

1500 E000 201” DOS RAM Address Error

It was thought that the chips used in these SlMMs were of poor quality.

Epson Portland evaluated the SlMMs in question and found that this was not true.

The problem is caused by the SIMM circuit boards (ITE and TECAP circuit boards)

used to manufacture the SIMM modules. The dimensions of these boards are not

compatible with industry standard SIMM sockets. This may result in incomplete

contact between the SIMM assembly and it’s socket. This is caused by insufficient

size of the contact surfaces in these products. Also enlarged holes in the TECAP

product allow the component pin to pass entirely through the hole without making

contact.

It is recommended that only SIMMS meeting industry standard contact surface

specifications be used in Epson Equity computer products.

Some recommended SlMMs that were tested and found Compatible are:

Toshiba

Matsushita

CDC Enterprises

Samsung

Aculogic

For more information contact Technical Support.

EPSON

Product Support Bulletin

Subject: EQUITY 286 PLUS Diagnostics Upgrade

Date: 8/7/91 PSB No: S-0132

Page(s): 1 of 1

Originator: MWT

The Diagnostics utility for the EQUITY 286 PLUS has been upgraded from version

3.15 to version 3.20. The reason for the upgrade was to provide a keyboard layout

to match the 101-key keyboard that is supplied with the EQUITY 286 PLUS.

This file is available for downloading from the Epson Bulletin Board System. The file

is located in the /80286L library under the filename 286DlAG.EXE. This is a self-

extracting file - simply download it with protocol and type 286DIAG. This will

extract the file DIAG.EXE which should be 84,673 bytes in size with a creation date

of 05/10/91.

Please make this upgraded file available to your EQUlTY 286 PLUS customers on

an as-needed basis.

PSB No.: S-0062I

Page: 1 of 18

EQUITY 286 PLUS

VER PART # DESC TYPE L C REAS N

030191-K2 Y727590801 AMI 27C010 U10 INITIAL RELEASE

081592 2011038 AMI 27C010 U10 Rapid keystrokes on all areas of the

keyboard may cause a shift key lock

and/or keyboard lockup. In some

rare cases, improper keyboard timing

may cause intermittent system boot

failure.

See ECN EQ286+-003 (4/2/93).

EQUITY III

VER PART # DESC TYPE L C REAS N

L1.07

H1.07

KQQNK1019A

KQQNK1020A

27128D-2

M27C128

U147

U146

INITIAL RELEASE

L1.09

H1.09

27128D-2

M27C128

U147

U146

To allow the use of drives with more

than 8 heads.

L1.10

H1.10

KDPN0000100

KDPN0000110

27128D-2

M27C128

U147

U146

Requires U99 chip upgrade to

DEC01A. Fixes problems with drive

type table, 3270 emulation, Novell 286

v2.0a and Thesys Fastcard III.

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