Sensor Interfaces - Intermec EasyCoder 501 Service Manual

Chapter 17 CPU Board

17.6:10 Sensor Interfaces

IC603
WRSENS 11
CLK
1
RESET
OE
AD8 2 19
D
AD9 3 18
D
AD10 4 17
D
AD11 5 16
D
AD12 6 15
D
AD13 7 14
D
AD14 8 13
D
AD15 9 12
D
74AC574M
AD0-AD15,A5-A6
+5V
PAPER LOW
P602
1
2
3
4
GND
C609
+5V
GND
IC600A
COMP
6
–
7
1
+
LM339M
R628
BEEP
BEEP 12
CSTIMER +5V
WR GND
RD
CLK/4
+5V
+5V
CLKPAP
RIBBON LOW
P605
1
R640
2
3
R642
4
+5V
GND
HEAD LIFT
GND
P608
2
4
1
3
GND
GND
142
R612
R613
R615
R616
R617
R618
R619
+5V
CLK/4
4
OUT0 D5
13 3
IC605
GATE0 D6
2
GND D7
15 1
NC NC
82C54M +5V
OUT1 VCC
17
GATE1 WR
18
CLK1 RD
CSTIMER
C611
IC600B
R634
COMP
4
–
5 2
+
R637
LM339M
R639
C615
GND
IC600D
COMP
TRESH 8
–
R605
9
+
LM339M
C602
R608
GND
+5V
C604
GND
8
OUTPUT
5
TONE OUT
AD13
AD14
+5V
AD15
R629
1
2
27 WR
Q602
26 RD
3
+5V
8
OUTPUT
5
TONE OUT
R641
1
2
Q603
3
Intermec EasyCoder 501 – Service Manual Ed. 7
+5V
R603
WR600
14
1
2
GND
3
R614
2
Q600
1
GND
IC17C
8 R620
10
1
9
74HC02M
IC604
C606
+
TONE DECODER
1
OUT FILTER
2 + C607
IN FILTER
3
TONE IN
C608
6
TIME CAP.
LM567CM
C610
R630
R632
C623
R633
P604
GND
IC606
C613
+
TONE DECODER
1
OUT FILTER
2 + C612
IN FILTER
3
TONE IN
C614
6
TIME CAP.
LM567CM
C616
R643
R645
P607 R646
LTS
RIB–END
AD–LSS
LABEL
3
+5V
LSS Lower
P600
1
2
4
3
C605
LSS Upper
GND
P601
1
2
4
3
3
2
Q601
1
GND
+5V
R-END
P603
1
2
4
3
GND
+5V
GND
C617 – C622
+5V GND
LTS
P606
1
2
4
3
GND
GND
TRESH
HEADLIFT