Epson 4+ manual

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A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Epson 4+, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

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First and foremost, an user manual of Epson 4+ should contain:
- informations concerning technical data of Epson 4+
- name of the manufacturer and a year of construction of the Epson 4+ item
- rules of operation, control and maintenance of the Epson 4+ item
- safety signs and mark certificates which confirm compatibility with appropriate standards

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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Epson 4+ alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Epson 4+, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Epson service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Epson 4+.

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Table of contents for the manual

  • Page 1

    EPSON Equity 4+ power (SPEED) hard disk diskette power light access light drive button Memory bay for hard disk, diskette drive, CD-ROM, tape drive, or other option card slots ROM Video RAM Shadow RAM Cache Math coprocessor Clock/calendar Controllers Video power keyboard I ’ ’ serial serial VGA inlet port mo”s POti’ pod2 monitor poti ;F?[...]

  • Page 2

    EPSON Equity 4+ Keyboard PS/2 compatible keyboard interface built into main system board; num lock setting selectable through SETUP; 6-pin, mini DIN connector Mouse PS/2 compatible mouse interface built into main system board; 6-pin, mini DIN connector Option slots Four 16-bit (or S-bit) I/O expansion slots, ISA compatible, 8 MHz bus speed; three s[...]

  • Page 3

    EPSON Equity 4+ Main System Board Diagram parallel port I serial port 2 serial port 1 mouse keyboard I 1 CN13 nnnnn / SUPPly connectors option card - riser board connector VGA feature connector video memory - (512KB optional) c OSCl 1 clc3- u9 z -+ diskette drive connector hard disk dtive connector 5 I) ; : 5 = = = z - - DIP switches SIMM sockets[...]

  • Page 4

    EPSON Equity 4+ Major Subassemblies Serial Port Connectors (CN9 and CN10) battery I CN3 diskette drive drive bays Connector Pin Assignments Parallel Port Connector (CNS) pin 13 pin 1 I I hooooooeoooL piti 25 pin 14 Parallel Port Connector Pin Assignments Pin Signal Pin Signal 1 stnAx? 10 ACK’ 2 Data 0 11 Busy Pin Signal 19 Signal ground 20 Signal[...]

  • Page 5

    EPSON Equity 4+ VGA Feature Connector (CN14) pin 1 pin 25 ~oooooooooooow, pin 2 /’ ’ pin 26 VGA Feafwe Connector Pin Assignments ‘Active low togic DMA Assignments Hardware Interrupts System I/O Address Map ~~ Reat-time clock NM non-maskable interru t mask OAO - OBF OF0 OCO - ODF OF1 OF8 - OFF 1 lntermpt controller 2,8259A Clear math coprocess[...]

  • Page 6

    EPSON Equity 4+ System Memory Map 23FFFFF 36MB Extended memory 0199909 1MB System BIOS (Shadow RAM, 64KB) OOFOCKKI OOEOOOO 99C7FFF Reserved for system BIOS (64KB) oocoooo 0088000 ooBoooo oOA9CUl9 oooooOO Resewed for ROM on I/O cards VGA BIOS ROM (Shadow, 32KB) VGA Color Text VGA Mono Text VGA Graphics Base memory Jumper and DIP Switch Settings Disp[...]

  • Page 7

    EPSON Equity 4+ Video Memory Hard Disk Drive Types If the computer has 512KB of video memory, you can install four 256K x 4 bit, 70ns, 20-pin DRAM ZIP (Zig-zag Inline Package) chips to increase the video memory to 1MB. The following table lists compatible DRAM ZIP chips. Supported Video ZIP Chips Manufacturer I Part number GoldstaP 1 GM71 C4256AZ-7[...]

  • Page 8

    EPSON Equity 4+ lnstallation / Support Tips Mouse and Keyboard Cl When connecting the mouse and keyboard to the computer, be careful to plug them into the proper ports. Although the ports are physically identical, they are not interchangeable, and damage may occur to the main system board if you plug the connectors into the wrong ports. Installing [...]