Instruction/ maintenance manual of the product 4S Epson
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Epson EL 4S/33+ EL 4S/33+ Components Memory - The following diagrams illustrate the outside of the EL 4S/33+ system. dskettec#fe reeetbutton / KIB I I I CoMl cow I - VGA power inlet AC outlet MOUSE P.
Epson EL 4S/33+ Keyboard Mouse Game port Option slots Speaker Mass storage Diskette drives Hard disk drives Other devices Keyboard PS/2 compatible keyboard interface built into main system board; 6-pi.
Epson EL 4S/33+ Major Subassemblies System Board Components 12/93 Epson EL 4S/33+ - 3.
Epson EL 4S/33+ System board components and connectors Jumper Settings Use J10 with the built-in VGA adapter only. When J10 is ON, 1024 x 768 mode is interlaced and 800 x 600 mode refreshes at 56Hz. When J1O is OFF, 1024 x 768 is non-interlaced and refresh at 60Hz; 800 x 600 refreshes at 72Hz.
Epson EL 4S/33+ Hard disk drive types Video Memory The computer comes with 256KB of video memory. You can increase the video memory to 512KB or 1024KB by installing 20-pin, 70ns or 80ns, 44256 DIP (Dual Inline Package) chips. For the memory to work properly, you must install one chip in each socket.
Epson EL 4S/33+ Drive Option Information Standard diskette drive specifications DMA Assignments Level DMA0 DMA1 DMA3 DMA6 DMA7 Assigned device Reserved (8-bit) Reserved (8-bit) FDD controller (8-bit) Reserved (8-bit) Cascade for DMA controller 1 Reserved (16-bit) Reserved (16-bit) Reserved (16-bit) Hardware Interrupts IRQ no.
Epson EL 4S/33+ System Memory Map System l/O Address Map 000FFFFFFh 000FF0000h 000FE0000h 00100000h 000F0000h 000C8000h 000C0000h 000A0000h System BIOS ROM: 64KB Dupliated from 0F0000h Reserved for sy.
Connector Pin Assignments Parallel port connector pin assignments (CN3) *Active low logic Serial port connector pin assignments (CN4 and CN5) VGA port connector pin assignments (CN2) Power supply conn.
Epson EL 4S/33+ Option card riser hard connector pin assignments (S1) (continued) *Active low logic *Active low logic SIMM sockets (RAM1, RAM2, RAM3, RAM4) Use only 30-pin, 8-bit or 9-bit, fast-page mode SIMMs (preferably tin-plated) that operate at an access speed of 70ns (nanoseconds) or faster.
Epson EL 4S/33+ Software Problems When installing a copy-protected software package, first try the installation at high speed. If this does not work properly, select low speed by pressing the Ctrl and Alt keys and the - key on the numeric keypad simultaneously.
An important point after buying a device Epson 4S (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Epson 4S yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Epson 4S - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Epson 4S you will learn all the available features of the product, as well as information on its operation. The information that you get Epson 4S will certainly help you make a decision on the purchase.
If you already are a holder of Epson 4S, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Epson 4S.
However, one of the most important roles played by the user manual is to help in solving problems with Epson 4S. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Epson 4S along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
