Midea AAC-18ISCH, Service Manual

Page: 19 / 54

Service manual
15
7.1.3 Outdoor main PCB(MSH-18HRIN1,MSC-18HRIN1)
1 2 3 4 5 6
A
B
C
D
6 5 4 3 2 1
D
C
B
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
27 28 29 30 32 31
33
35
34
36
37
38
39
40
41
42
44
45
46
47
48
49
50
51
52 53 54 55 56 57 58 59 60 64 63 62 61
43
TMS320F242
(64QFP)
IOPC7
IOPC6
IOPC0
CAP3/IOA5
CAP2/QEP1/IOPA4
CAP1/QEP0/IOPA3
VDD
VSS
VDD
VSS
VSSA
VDDA
ADCIN07
VREFHI
VREFLO
ADCIN06
ADCIN05
ADCIN04
ADC
IN03
ADC
IN02
ADC
IN01
ADC
IN00
/R
ES
ET
TC
K
TD
I
TD
O
TM
S
/TR
S
T
Vss
VDD
IOPC5
IOPC4
IOPC3
IOPC2
SCIRX/IOPA1
SCITX/IOPA0
XTAL2
XTAL1
VDD
VSS
VSS
VDD0
PWM1
/P
A6
PWM2
/P
A7
PWM3
/P
B
0
PWM4
/P
B
1
PWM5
/P
B
2
PTM
PD0
V
ccp
TP
2
TP
1
Vdd Vss
C16 C15
XTAL1
1
2
CN1
R7
R8
C7
+5V
R18
L4
C17
+5V
J3(Comm Select)
FAN
TXD
RXD
POWER
4-WAY
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
IC2
+12V
D5
R11
R16
18
19
20 21 22 23 24 25 26
Compress Top
R1
R2
R3
R4
R6
R5
+5V
+5V
+5V
D2
+5V
C8 R12
R14
R15
R13
C9
EVP
OUT-TEMP
1
2
CN2
1
2
Outdoor Entironment Sensor
Outdoor Pipe Sensor
+5V
+5V
C6
R10
R9
+5V
IPM
C1
R31
R12
D3 R21
R22 C10
C11 CT1
4148
R24
EMU1
EMU0
VSS
VDD
NC
IOPC1
1
2
3
4
5
6
7
8
9
10
CZ2
+5
+12
Pro
Pro
+5V
C22 C20
R23
1
2
3
IC1
C12
+5
C13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CN10
R36
R25
R35
+5
+5
+5
C14
+5V
R32
R30
LED
LED
R29
C23
C25
C4
LED
Current Detect
+5
1
2
CN4
C19
C21
R34
R33
W-
W+
V-
V+
U-
U+
1
2
3
4
5
6
7
8
9
10
11
CN1
CON11
AC-IN
AC-IN
FAN'
4-WAY'
GND
TXD
RXD
+5V
+12V
POWER1
AC-IN
FAN'
4-WAY'
link to power circuit
7.1.4 Outdoor power PCB(MSH-18HRIN1,MSC-18HRIN1)
1 2 3 4
A
B
C
D
4 3 2 1
D
C
B
A
FS1
20A/250VAC
C1
474/250V
ZMR2
14D681
ZMR1
14D681
C5
472
C4
472
C2
474/250V
t
PTC1
RL3
RL2
RL1
C84 C7
103
C81 C85 C83 C8
103
AS1
T1
H38-20A-6MH
+12V
C15
2.5U
+12V
560uF/400V *6
POWER1
AC V+
AC V-
DB1
L2 R1812
Filter
C6
50uF/450V
C82 C86
1
2
3
4
5
6
7
8
9
10
11
CN1
CON11
POWER1
+12V
+5V
RXD
TXD
GND
4-WAY
L.FAN
H.FAN
AC-IN
T3
R26
5.1K
D1
IN4007
R28
12K
C21
104
IC6 PC817
IC5 PC851
+5V
TXD
R30
3.5K/7W
C23
471/250V
RXD
1
2 3
4
1
2
3
4
+12V
POWER1
FS2
3.
15A
/250V
A
C
L1
R8025
L3
R18J04D
4-WA
Y
FAN
L
N
P-2
P-5
P-6
IPM BOARD
P-4
P-3
RL3-4
P-1
+5
AC V+
AC V-
DB2
CN4
FAN.H
CN7
CAP
CN5
COM
CN6
4-WAY
S
Power Circuit