Epson Equity 286 PLUS Manuals

EQUITY 286 PLUS Computer Specifications CPU and Memory 16-bit CPU System memory ROM Shadow RAM Math coprocessor (optional) Clock/calendar Battery Controllers Diskette Hard disk 80286 microprocessor, 12 MHz system clock speed, 12 MHz or 6 MHz processor speed; user selectable 0 wait state memory access speed at 12 MHz 1MB RAM standard; expandable using 256KB or 1MB SIMMs up to 5MB (maximum); SIMMs must be 100ns or faster access speed Memory expandable to 16MB if memory option card is used 128KB (includes system BIOS and VGA BIOS) 0 wait state access speed; system ROM BIOS and video ROM can be copied into RAM through SETUP 80287 (8 or 10 MHz) support; speed selectable by jumper Real-time clock, calendar, and CMOS RAM for configuration; battery backup Replaceable, 3.6V lithium battery; 3-5 year life supports up to two drives in any of four formats: 5 ‘/tin& high-density, 1.2MB; 5 ‘/r-inch, doubledensity, 360KB; 3 ?4-inch, high-density, l&MB; 3 ?4-inch, double-density, 720KB; controller on main system board Supports up to two drives; embedded controllers; interface on main system board Interfaces Monitor serial Parallel Auxiliary Keyboard option slots speaker Power Supply Type Input ranges Maximum outputs Mass Storage Diskette drives Hard disk drives Keyboard Layout Function Standard VGA with 256KB of video memory; supports up to 640 x 480 pixels in 16-color or gray scale mode; 15-pin, D-shell connector RS-232C, programmable, asynchronous; 9-pin, D-shell connector Standard 8-bit parallel, monodirectional; 25 pin, D-shell connector Mini DIN, 6-pin connector for PS/2 compatible mouse or other device Mini DIN, 6-pin connector for PS/2 compatible keyboard Four standard input/output expansion slots (three 16-bit ISA compatible and one 8-bit ISA compatible); 8 MHz bus speed Internal 145W, fan-cooled 98 VAC to 132 VAC, 47 Hz to 63 Hz +5 VDC at 18 Amps, +12 WC at 4.2 Amps -12 VDC at 0.3 Amps, -5 VDC at 0.3 Amps Three half-height drives maximum (one vertical mount and two horizontal mounts) configurable using the following drive types: 5 ‘/-inch diskette drive, 1.2MB (high-density) storage capacity 3 ‘/l-inch diskette drive, 1.44MB (high-density) storage capacity 5 ‘/-inch diskette drive, 36OKB (double-density) storage capacity 3 ‘h-inch diskette drive, ROKB (double-density) storage capacity 3 ‘h-inch form factor hard disk drive(s), up to haIf height size; the first mounted vertically, second mounted horizontaIIy Detachable, two position; 101 sculpted keys 58key QWERTY main keyboard; 17-key numeric /cursor pad; 10 cursor keys; additional Q-key cursor pad; 16 function keys (user-definable) Four levels (normaI, shift, control, alternate); user-definable Equity Series Computers 9/17/91 286 PLUS-1

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 ® E Q U I T Y ® 2 8 6 P L U S U s e r ’ s G u i d e