EPSON Equity 4+
Major Subassemblies
Serial Port Connectors (CN9 and CN10)
battery
I
CN3
diskette
drive
drive bays
Connector Pin Assignments
Parallel Port Connector
(CNS)
pin 13
pin 1
I I
hooooooeoooL
piti
25
pin 14
Parallel Port Connector Pin Assignments
Pin
Signal
Pin Signal
1
stnAx? 10
ACK’
2
Data 0
11
Busy
Pin Signal
19
Signal ground
20 Signal
ground
3
Data
1
4
Data
2
5
Data
3
6
Data 4
12
PE 21
Signal
ground
13
Select
22 Signal
ground
14
Auto’
23 Signal
ground
15
El-K-P
24 Signal
ground
7
Data
5 16
hit
25 Signal
ground
8
Data
6 17
Selectin*
9
Data
7 18 Signal
ground
*Active low logic
Serial Port Connector Pin Assignments
Pin
Signal
Pin
Signal
1
Data carrier detect
6
Data set ready
2
Receive data
7
Request to send
3
Transmit data
8
Clear to send
4
Data terminal ready
9
Ring indicator
5
Not used
Keyboard Connector (CN5) and
Mouse Connector (CN4)
pin 6
pin 5
pin 4
+
+
pin 3
pin 2
pin 1
Although the keyboard and mouse connectors are physically
identical, they cannot be used interchangeably.
Keybmrd and Mouse Connector Pin Assignments
Pin
Signal
Pin
Signal
1
Data
4
+5
VDC
(fused)
2
Resewed
5
Clock
3
Ground
6
Reserved
VGA Port Connector (CN13)
Din 5
pin 10
pin 15
VGA Port Connector Pin Assignments
pin 1
pin 6
pin 11
EPSON Equity 4+ 4
10/1/93