Video memory, Hard disk drive types, Installation / support tips – Epson 4SX/25 User Manual
Page 7: Power, Mouse and keyboard, Installing diskette drives, Lnstallation/support tips

Video Memory
If the computer has 512KB of video memory, you can install
four 256K x 4 bit,
DRAM DIP (Dual
Package) chips to increase the video memory to
The
following table lists which DRAM DIP chips you can install
on the main system board.
Supported DRAM Chips
EPSON Equity 4SX/25, 4DX/33, and 4DX2/50
Hard Disk Drive Types (continued)
1022
37
202
683
16
38
682
CP-3204F
38
548
8
115
761
8
PA
(ESDI)
42
1022
5
36
CDC
43
68
1024
8
512
1023
LAN64,
44
1828
45
42
1024
5
17
512
1023
46
40
615
8
17
618
47
Reserved
48
If the computer has an Epson
or
hard
disk drive, select the appropriate type number from the table
below when you run the SETUP program.
Epson
Hard Disk Drive Types
Type number
Epson hard disk drive
24
39
34
240MB
lnstallation/Support Tips
I
Manufacturer
I
number
I
I
Hard Disk Drive Types
The table below lists types of hard disk drives you can use in
the computer. Check this table and your hard disk manual to
find the correct type number(s) for the hard disk drive(s)
installed in the computer. You need to enter the type
number(s) when you set the hard disk drive configuration in
the SETUP program.
Hard Disk Drive Types
Landing
no.
(CYL)
(SEC)
zone
306
4
17
128
2
20
615
4
17
615
ST-225,
3
615
6
17
615
ST-138A
4
8
17
512
5
46
6
17
512
6
20
615
4
17
none
615
ST-125,
16
17
The computer has an input voltage selection switch on the
back panel to select between
for USA and Canadian
use, and
for use in other countries.
Mouse and Keyboard
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 Diskette Drives
Make sure that the drive type has been correctly selected in
the SETUP program.
I1023
4/1/93
EPSON Equity-7