Epson 4003353 Service Manual page 122

Stylus Color service Manual
Table A-3. Connector Pin Assignments - CN2
Pin I/o
1-6
o
7
0
8
I
9
10
o
11
0
1 2
0
1 3
0
1 4
0
1 5
0
1 6
0
1 7
0
1 8
.
1 9 - 2 4
2 5 - 2 8
2 9 - 3 6
Table A-4. Connector Pin Assignments - CN3
Pin
1
2
0
3
4
I
5
o
6
7
8
I
Table A-5. Connector Pin Assignments - CN4
1
I/o
Pin
1 3 , 6 7 1 0 3 5 ,
37,4{,67,69
2,4589,39,
o
46,44,42,40,
38,36,34,32
30,28,26,24
' '
25,23,21,19,
17,15,13,11
43
o
55 0
0
58.45,47.49.
Rev. A
Name
Power supply for l/F drive
Transmit data
/READY Ready signal
Receive data
NC Not connected
IRESET Reset signal
Inhabit signal
Command request signal
Wriie ready signal
Read request signal
High write signal
Read signal
Chip select signal
Ground
A3-AO Address bus signal 3-O
Data bus signal 15-8
Name
DTR
Data terminal ready
NC Not connected
Transmit data-
Ground
Receive data -
Transmit data+
NC Not connected
Receive data +
Name
Power supply for option CG
Ground
Address signal 0-21
Data bus signal 8-15
Read signal for CG board
Output enable CG ROM on CG board
/CG
CG ROM output enable signal on CG board
(Memory select signal)
Description
Description
Description
Appendix
A-3