135
Intermec EasyCoder 501 – Service Manual Ed. 7
Chapter 17 CPU Board
17.6:3 Interfaces to Printer Devices
1
2
Q2
3
CUT–IN
R17
CUT–OUT
R19
8
9
10
D1
R12
P24
Q1
R20
Q3
LIFT–HEAD
EN–ENG2
RS–IDENT
RN4
1
7 6 5 4 3
+5V
+5V
GND
JUM4
GND
JUM3
GND
JUM2
GND
JUM1
OUT4
OUT3
OUT2
OUT1
V24
V24
GND
GND
ST6
ST5
ST4
ST3
ST2
ST1
RS–OK
+5V
GND
RIBBONSAVE
CUTTER
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P9
2
+5V
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P8
16
15
5
4
3
2
1
P6
GND
1
2
3
2
1
3
GND
GND
&
11
12
13
14
15
16
17
18
CSX1
CSX0
CSPANEL
CSDI
IC02C
9
8
10
74HC08M
IC14
9
8
7
A1
6
A3
5
A2
4
A4
3
RD
2
WR
19
1
CSBUS
74HC541M
IC11
11
9
AD0
12
8
AD7
13
7
AD1
14
6
AD6
15
5
AD2
16
4
AD5
17
3
AD3
1
18
2
AD4
19
CSBUS
1
RD
74HC245M
IC06A
12
8
RD
14
6
WR
16
4
A6
18
2
A5
EN
1
CSPANEL
74HC241M
IC05
AD8
AD9
AD10
AD11
AD12
AD13
AD14
18
AD15
RD
PANEL INTERFACE
+5V
WR1
1
2
3
AD4*
AD3*
AD5*
AD2*
AD6*
AD1*
AD7*
AD0*
CSX0
CSX1
XINT
WR*
RD*
X0
X1
NMIHPC
+5.3V
GND
/RESET
A4*
A2*
A3*
A1*
GND
26
25
24
23
22
21
I/O INTERFACE
+5V
DI–IDENT
VDISP
ECLK
RESET
BRD
BWR
CSPANEL
GND
GND
*A6
*A5
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
GND
20
19
18
17
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P4
16
15
EN
&
GND
G3
3EN2
3EN1
2
20
19
18
17
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P2
16
15
11
9
12
8
13
7
14
6
15
5
16
4
17
3
2
19
1
74HC245M
G3
3EN2
3EN1
2
1
&
IC02B
4
6
5
74HC08M
P1
GND
+5.3V
+5.3V
3
2
1
4
5
6
7
8
9
10
11
12
13
CSMEM
/RESET
HOLDA
DDIN
NADS
GND
HBE
RD
WR
GND
NMI
A17'
A18'
A19'
A20'
A21'
A22'
A23'
CTTL'
23
22
21
20
19
18
17
16
15
14
24
25
26
27
28
29
30
31
32
33
A16'
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
AD7
AD5
AD6
35
34
AD0
AD1
AD2
AD3
AD4
40
39
38
37
36
NEXTHOLD
AD0-A15,A1-A20
MEMORY EXPANSION
5
+5V
4
3
2
2
3
4
5
1
1
RN1
RN2