137
Intermec EasyCoder 501 – Service Manual Ed. 7
Chapter 17 CPU Board
17.6:5 HPC Slave Processor
/DSR
EOP
UWR
RDHPC
+5V
/TXD
ST1
ST2
ST3
ST4
ST5
ST6
INC
GND
RDHPC
EOP
/DSR
XINT
/CTS
/RXD
AD0 – AD15, A1 – A10
INT
X0
X1
/RTS
HPCBUSY
A2
START
LATCH
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
+5V
UWR
GND
12
13
14
15
16
17
18
19
IC404
74HC574M
HPC46083-DEP/V30
IC402
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
CKO
I0
I1
ST1
ST2
RESET
A0
A1
A2
A3
A4
A5
A6
A7
RDY
CK2
GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
I7
I6
D0
D1
D2
D3
E1
D4
D5
D6
D7
EXM
P0
P1
P2
P3
NC
B15
B14
B13
B12
B11
B10
B9
B8
A15
A14
A13
A12
A11
A10
A9
A8
VCC
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/CTS
/RXD
D0
D1
D2
D3
XINT
D4
D5
D6
D7
GND
STRB1
STRB2
STRB3
STRB4
I5
I4
I3
I2
VCC
EXUI
B0
B1
B2
B3
B4
B5
B6
B7
WO
GND
CKI
9
8
7
6
4
3
2
1
68
67
66
65
64
63
61
NMIHPC
/RESET
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
I
C19C
I
C502A
1
74HC04M
74HC074M
D
D
D
D
D
D
D
D
9
8
7
6
5
4
3
2
A1
A2
A3
A4
A5
A6
A7
A8
OE
CLK
STRBCLK
C403
C402
Y400
19
18
17
16
15
14
13
12
IC408
74HC573M
D
D
D
D
D
D
D
D
2
3
4
5
6
7
8
9
OE
CLK
R410
GND
ST1–ENG1
ST2–ENG1
ST3–ENG1
ST4–ENG1
ST5–ENG1
ST6–ENG1
GND
11
1
GND
EN–ENG1
11
1
R400
+5V
R409
EN–ENG1
WRHPC
1
HPCBUSY
IC503A
74HC32M
1
2
3
IC19D
74HC04M
9 8
IC08E
P11
74HC04M
11 10
IC509A
74HC00M
1
2
&
3
WAIT
+5V
R415
X0
X1
+5V
R416
/RSET
NMIHPC
IC702C
74HC08M
9
10
&
8
R423
GND
R425
BEEP
BEEPEN
IC204F
7406M
13 12
BEEP
2 1
GND
1
R422
24V
GND
+5V
C410 –
C413
GND
+40V
C362 –
C365
ST1
ST2
ST3
ST4
ST5
ST6
STRB4
STRB3
STRB2
4
2
3
1
5
6
+5V
+5V
/RTS
LATCH
HPCBUSY
INT
5 6
STRB1
/STX
INC
ST1–ENG1
ST2–ENG1
ST3–ENG1
ST4–ENG1
ST5–ENG1
ST6–ENG1
FORWARD
BACKWARD
START
GND
GND
R424
R421
1
R426
FCLK'
S
1D
C1
R
1
2
3