Interfaces To Printer Devices - Intermec EasyCoder 501 Service Manual

17.6:3 Interfaces to Printer Devices

P1
MEMORY EXPANSION
AD0-A15,A1-A20
Intermec EasyCoder 501 – Service Manual Ed. 7
CUT–IN
CUT–OUT
GND
IC02B
CSDI 4
CSPANEL 5
74HC08M
IC02C
CSX0 9
&
CSX1 10
74HC08M
+5V
RN4 1
10 9 8 7 6 5 4 3 2
P9
OUT1 1
OUT2 2
OUT3 3
OUT4 4
JUM1 5
GND 6
JUM2 7
GND 8
JUM3 9
GND 10
JUM4 11
GND 12
+5V 13
+5V 14
R12
3
R17 3 Q2
2
1
GND
3
GND
74HC245M
1
RD
3EN1
3EN2
19
6
&
G3
2
AD15 18
1
2
3 17
AD14
4 16
AD13
5 15
AD12
6 14
AD11
7 13
AD10
AD9 8 12
9 11
AD8
IC05
74HC241M
CSPANEL 1
EN
A5 2 18
A6 4 16
WR 6 14
RD 8 12
IC06A
74HC245M
RD 1
3EN1
3EN2
8 CSBUS 19
G3
AD4 2 18
1
2
AD3 3 17
AD5 4 16
AD2 5 15
AD6 6 14
AD1 7 13
AD7 8 12
AD0 9 11
IC11
74HC541M
CSBUS 1
&
19 EN
WR 2 18
RD 3 17
A4 4 16
A2 5 15
A3 6 14
A1 7 13
8 12
9 11
IC14
GND
Chapter 17 CPU Board
P24
CUTTER
P6
1
2
3
2 Q1
4
1
5
RIBBONSAVE
P8
GND 1
1
+5V 2
LIFT–HEAD 3
Q3
2
RS–OK 4
EN–ENG2 5
RS–IDENT 6
ST1 7
ST2 8
ST3 9
ST4 10
ST5 11
ST6 12
+5V
GND 13
GND 14
V24
15
RN1 RN2
1 1
V24 16
PANEL INTERFACE
5 4 3 2 2 3 4 5
P2
1
DB7
DB6 2
3
DB5
4
DB4
5
DB3
6
DB2
DB1 7
8
DB0
9
*A5
10
*A6
11
GND
12
GND
13
CSPANEL
14
BWR
15
BRD
RESET 16
17
ECLK
+5V
VDISP 18
DI–IDENT 19
WR1 1
+5V 20
2
3
I/O INTERFACE
GND
P4
1
AD4*
AD3* 2
3
AD5*
AD2* 4
5
AD6*
6
AD1*
7
AD7*
8
AD0*
CSX0 9
10
CSX1
11
XINT
12
WR*
13
RD*
X0 14
X1 15
NMIHPC 16
+5.3V 17
GND 18
/RESET 19
A4* 20
A2* 21
A3* 22
23
A1* 24
25
GND 26
135