Epson EL 4S/33+

Option card riser hard connector pin assignments (S1) (continued)

 

SIMM sockets (RAM1, RAM2, RAM3, RAM4)

*Active low logic

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. SIMMs must operate at the same

speed.

 

Installation/Support Tips

 

 

Installing Diskette Drives

 

Make sure that the drive type has been correctly selected in

 

the SETUP program.

 

Installing Hard Disk Drives

 

When installing a hard disk drive, see the hard disk drive

 

type tables on pages 5 and 6 and use the auto-sensing

 

feature in SETUP to select the correct type number for the

 

drive. If the auto-sensing feature does not produce a

 

match for the drive, you can define your own drive type

 

by selecting User Def 1 or 2 as the type and entering

 

the drive’s exact parameters.

*Active low logic

It is recommended that a 16-bit, AT-type hard disk

 

controller be used if you are installing a drive that cannot

 

use the embedded IDE interface. If you install a non-IDE

 

hard disk drive and controller card, you need to disable

 

the built-in IDE hard disk drive interface by moving

 

jumpers J21 and J30 to position 2-3.

 

If you plan to install two hard disk drives in the internal

 

bays, you must use flat-head screws (#6-32UNC x 8

 

FH,M,+) to secure the top drive to the mounting bracket.

 

If you are installing an ESDI hard disk drive, make sure

 

you disable the built-in IDE hard disk drive interface by

 

moving jumpers J21 and J30 to position 2-3. Also be sure

 

to remove the hard disk drive ribbon connector from the

 

system board.

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Epson EL 4S/33+ - 9