Epson | Equity 486DX2/50 PLUS | Equity 486DX2/50 PLUS - Product Support Bulletin(s)

EPSON
Product Support Bulletin
Subject: Proper Method for Running Benchmark and Diagnostics Programs
Date: 06/04/93
Page(s): 1 of 1
PSB No: S-0158
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
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
ACTION DESK 4000
VER
PART #
4.00
451-7010-201
DESC
PHOENIX
TYPE
27C010
LOC
U27
REASON
INITIAL RELEASE
EQUITY 486SX/25 PLUS
VER
1.01
1.01
1.03
1.03
PART #
ASH25U46
ASH25U47
Y738808003
Y738807003
DESC
CASH-A02
CASH-B02
CASH-B04
CASH-A04
TYPE
27C512
27C512
27C512
27C512
LOC
U46
U47
U46
U47
REASON
INITIAL RELEASE
To rectify problem with Helix
Headroom v. 2.03b. After loading,
the system may lock up when
Headroom activation key is pressed.
(This problem does not occur if a
mouse is connected via the mouse
port. To update the HDD table. See
ECN No: EQ486SX/25+-001 (8/7/92).
EQUITY 486DX2/50 PLUS
VER
1.03
1.03
PART #
Y738808003
Y738807003
DESC
CASH-B04
CASH-A04
TYPE
27C512
27C512
LOC
U46
U47
REASON
INITIAL RELEASE
EXPRESS STATION
VER
1.00.04.S0I
PART #
DESC
PHOENIX
TYPE
LOC
REASON
INITIAL RELEASE
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