Epson 4SX/25 Laptop User Manual


 
EPSON Equity 4SX/25,4DX/33, and 4DX2/50
Main System Board Diagram
VGA video
parallel
serial 2
serial 1
mouse
keyboard
ELI-d
CN2
CN3
QQQ
1
-
power supply
connectors
VGA feature
connector
ml
UlQ
U18
standard
-
512KB
video
memory
<
optional
-
512KB
CPU chip
u21
OverDrive socket
(ZIF
socket)
option board
riser card
connector
CN
0000000000000000
0000000000000000
U,..a
1
Iii
0000000000000000000
0000000000000000000
nn
-
FDD connector
-
HDD connector
-
7
1
1
1
,I
e
I”
----e--
u37
0
I
C
II
I
E
I
I
I
I
Ia
I
I
I
I
CPU
(PQFP)
U27
10
U38
TOSHIBA
TC6933ES
--1
I
I
I
I
I
I
I
I
0
I
I
2
0
A
1
Ill
u35
u33
3
CN17CNIS
CN15
CN14 CN13 CN12
CNll
OrlnnlInn
\
mu
U3Q
I
\
SIMM 1
SIMM0, 4MB SIMM standard
4/1/93
EPSON Equity-3