Epson Equity 386SX/20 PLUS 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.

EPSON AMERICA. NC. EPSON
Product Support Bulletin
Subject: Windows 3.1 Display Drivers for the Equity 386SX/20 PLUS
Date: 04/02/93
Page(s): 1 of 1PSB No: S-0150A
Originator: MWT/KAS
The purpose of this bulletin is to inform you of the release of display drivers for
Windows 3.1 for the Equity 386SX/20 PLUS. These drivers support resolutions
of up 640 x 480 x 256 colors and 1024 x 768 x 16 colors. This driver set is
available from the Epson Product Support Bulletin Board System. The filename
is SX20PW31.EXE and is in the DRIVERS file library. This is a self-extracting
file - download it with protocol (such as XMODEM) and then execute the file.
The archive also contains an ASCII text file named READ.ME which gives the
installation instructions. Download time at 2400 baud is approximately 40
minutes.

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.

PSB No.: S-0062I
Page: 1 of 18
EQUITY 386SX/16 PLUS
VER PART DESC TYPE LOC REASON
Y705590825 CTRTD-A02 27C010 U9 INITIAL RELEASE
073092 2011051 System Bios 27C010 U9 Rapid keystrokes on all area 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 No: EQ386SX/16+-001
(4/2/93).
EQUITY 386SX/20 PLUS
VER PART DESC TYPE LOC REASON
1.04 CSTH-A04 27C010 U13 INITIAL RELEASE
1.05 CSTH-A05 27C010 U13
1.06 Y723806005 CSTH-A06 27C010 U13 Rapid keystrokes using the
enhanced 10-key area of the
keyboard. This problem may
cause shift key lock and/or
keyboard lockup.
See ECN No: EQ386SX/20+-002
(2/7/92).
EQUITY 320SX PLUS
VER PART DESC TYPE LOC REASON
101891-KZ 320SXROM AMI 27C010 U9 INITIAL RELEASE
073092 2011037 AMI 27C010 U9 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 No: EQ320SX+-001 (4/2/93).