Specifications

Epson EL 3S/33
Major Subassemblies
Serial Port Connectors (CN4 and CN5)
a, option card
connector coprocessor
power
J4
supply
\
J11
I
I
mounting bracket
\
I
1
\
drive bays
Connector Pin Assignments
Parallel Port Connector (CN3)
pin 13 pin 1
I
I
l oeoooooooo~
~oooooooooo~
I I
pin 25 pin 14
Parallel Port Connector Pin Assignments
main
system
board
17 IData
I16
I25 1 Signal ground
8 IData 17
9 IData
18
Selectin*
Signal ground
Serial Port Connector Pin Assignments
Keyboard Connector (CON1)
pin 5
pin 4 -b
+ pin 3
pin 2
pin 1
Although the keyboard and mouse connectors are physically
identical, they cannot be used interchangeably.
Keyboard and Mouse Connector Pin Assignments
Pin 1 Signal I Pin I Signal
1 IData 14 I+5vDc
2 Resewed 5 Clock
3 Ground
6
Resewed
VGA Port Connector (CN2)
pin 5
pin 10
pin 15
VGA Port Connector Pin Assignments
pin 1
pin 6
pin 11
‘Active low logic
5/28/93
Epson EL 3S/33-3