Read Sharp AE-M18 (serv.man2) Service Manual online
12
AY-M09AE
AE-M18AE
AE-M18AE
Pin Terminal Input
No. Name
Output
Function
33 P56
OUT
–
34 P57
OUT
–
35 P60
IN
Serial signal input(A1)
36 P61
OUT
Serial signal output(A1)
37 P62
IN
Serial signal input(A2)
38 P63
OUT
Serial signal output(A2)
39 P64
OUT
–
40 P65
OUT
–
41 P66
OUT
–
42 P67
OUT
–
43 RESET –
Microcomputer reset input
44 P00
IN
GND
45 P01
OUT
–
46 P02
OUT
–
47 P03
OUT
–
48 VDD
–
Power supply(5V)
49 X2
–
Internal oscillation
50 X1
–
Internal oscillation
51 IC
–
GND
52 XT2
–
–
53 P04
IN
GND
54 AVSS
–
GND
55 ANI0
IN
Pipe temp. thermistor(A1)
56 ANI1
IN
Pipe temp. thermistor(A2)
57 ANI2
IN
GND
58 ANI3
IN
Current(A1)
59 ANI4
IN
Current(A2)
60 ANI5
IN
Revised resistance(A1)
61 ANI6
IN
Revised resistance(A2)
62 ANI7
IN
GND
63 AVSS
–
5V
64 AVREF –
5V
Microcomputer (IC1) for OUTDOOR UNIT
The microcomputer is a CMOS, one chip, 8-bit microcomputer.
Microcomputer port allocation is as follows.
The microcomputer is a CMOS, one chip, 8-bit microcomputer.
Microcomputer port allocation is as follows.
Pin Terminal Input
No. Name
Output
Function
1
P20
OUT
Compressor relay (A1)
2
P21
OUT
Compressor relay (A2)
3
P22
OUT
Outdoor motor fan relay
4
P23
OUT
–
5
P24
OUT
–
6
P25
OUT
Valve coil
7
P26
OUT
–
8
P27
OUT
–
9
P30
OUT
–
10 P31
OUT
–
11 P32
OUT
–
12 P33
IN
–
13 P34
IN
Test1 input
14 P35
OUT
–
15 BUZ
OUT
–
16 P37
OUT
–
17 VSS
–
Power supply(0V)
18 P40
OUT
–
19 P41
OUT
–
20 P42
OUT
–
21 P43
OUT
–
22 P44
OUT
–
23 P45
OUT
–
24 P46
OUT
–
25 P47
OUT
–
26 P50
OUT
–
27 P51
OUT
–
28 P52
OUT
–
29 P53
OUT
LED(error)
30 P54
OUT
LED(serial A2)
31 P55
OUT
LED(serial A1)
32 VSS
–
Power supply(0V)
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