Pcb Diagram; Indoor Main Pcb - Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 Manual

8 PCB diagram

8.1 Display board
1
D
CN1 8LED
C
7
6 CLK
5 DATA
4 +5
FROM INDOOR PCB DIGI
3 +5V
2 REMOTE
E2
1 GND
47u/16V
R1 102
B
R2 102
A
1

8.2 Indoor main PCB

1 2
CN1
1
R2 51/1W
C2
2
333/250VAC
3 T2 T1
TR1
4 C25
BT131
1.2(1.5)uF/450V
5
D
FAN_IN
2K R1
IC1 PC817
IN4007*4
D1
D2
E1
A
D4
D3
2200uF/25V
B
CN5 D6 IN4007*4
4
14.5VAC 350mA
D7
3
2 E5
14.5VAC 200mA
D9
1
TRANS_OUT D8
2200uF/25V
C
PC817
IC6
R18
C14 5.1K
C16
D10
103
IN4007 471/250V
IC10 PC851
R17
2K/2W
R20 R21
11K/2W 11K/2W
DZ2 C13 R19
B
24V 100K
E9 CN9
473
N
100uF/35V
1
2
CN8
1
S
+5V +5V
R31 R32
103 103
SELECT1 SELECT2
J2 J3
A
1 2
2 3
IC1
1
Dsa Vcc
2
Dsb Q7
3
Q0 Q6
4
Q1 Q5
5
Q2 Q4
6
Q3 MR
7
GND CP
74HC164
+5
C3 C6
R6
221
104 102
Q1
9012
R5
102
Q2
9013
R4 221
dig.1 g a
f
+5
d dp e c
R3 221
Q3
9012
2 3
3
L
E2
470uF/25V
C5
L1
DZ1 333/250VAC
R4 R5
D5
12V 11K/2W 11K/2W
N
IN4007
+5V
PTC1
R3
82RM
INDOORFAN'
561
IC2 7812 +12V IC3 7805
1 3 1 3
Vin Vout Vin Vout
C3 E3 C4 E4
104 104
1000uF/25V
470uF/16V
IC12 7812 ISO+12V
1 3
Vin Vout
C8 E6 C9
104 104
1000uF/25V
ISOGND
POWER CIRCUIT
+5V
4
R23
+5V
3 512 C15
103
R24
RXD
681
R22
123
Q2 9014
R26202
TXD
D11 CN10
L
1
R25
2
512
IN4007
COMMUNICATE CIRCUIT
+5V
+5V
D15
R33
IN4148
103
R34512
SELECT3 FAN_BACK
C20
103
J1
3
4
+5
R7
221
Q4
R8
9012
+5
102
104
C1
14
13
12
DISP2
11
10
9
8
+5
R10
151
REC1
b
DISP1
E4
C5
10u/16V
dig.2 104
4
4 5
CN10
FUSE1
1
L
3.15A/250V
ZR1
2
14D681K
CN9
1
N
2
1 CN2
TRANS_IN
2
+5V
CORTROL CIRCUIT
C6
104
IC8
1
C10
E7 VSS0
100uF/16V
223 2
VDD0
+5V 3
INDOORFAN P25
4
BUZZ P26
5
STEP1 P00
6
STEP2 P01
7
STEP3 P02
8
STEP4 P03
9
CHUCHEN P04
10
VSS1
11
P05
12
SELECT3 P50
13
SELECT1 P51
14
SELECT2 P52
15
SW_KEY P53
16
+5V AVDD
17
AVREF
18
T1_room AN10
19
T2_pipe AN11
20
AN12
21
AN13
UPD789166
+5V
R40 512
R37 123
A
D13 1N4148 R38 R39
D14 1N4148 123 123 C22
223
B
+5V
R35
CN13
103
3
2 SW_KEY
1
C21
FAN_BACK SW1
104
+12V
4 5
287
5
LED1 LED2 LED3
DEF R
TIME Y
AUTO G
Size FCSM No. DWG No.
B
Scale Sheet
0 of 0
5
6 7
IC4 CN3
1 16
STEP1 IN1 OUT1 1
2
2 15
STEP2 IN2 OUT2 3
4
3 14
STEP3 IN3 OUT3 5
4 13
STEP4 IN4 OUT4
5 12
BUZZ IN5 OUT5
R8
6 11
INDOORFAN IN6 OUT6 INDOORFAN'
102
7 10
CHUCHEN IN7 OUT7
8 9
VSS VDD
IC5
C7 IC/ULN2003 R7
104 102
+12V
R6
202
R10 X1
42
X1
105
41
X2
2.5M
40
RESET RST
+5V
R11 10K
39
XT1
R12 10K
38
XT2
RST
37
Vpp/IC E8
36 47uF/16V
P24 LED_C
35
P23 CLK
34
P22 RXD
33
P21 TXD
32
VDD1
31
P20 DIGI_C
30
P33 FAN_BACK
29
P32 ZERO
CLK
28
P31 DATA
DIGI_C
27
P30 REMOTE
REMOTE
26
P11 SDA
25
P10 SCL
CN4
24
AVSS
23
AN15
22
AN14
R28
103
ZERO
Q3
SCL
9014
SDA
C23
223
CN11 +5V CN14
2 2
1 1
T2_pipe T1_room
R27 202
T2_pipe
E16 C17
R36 R41
8061 47uF/16V 223 8061
6 7
6
D
C
B
A
Rev
6
8
+12V
D
B1
ISO+12V
PC817
R9
Q1
512
9014
ISOGND
ISO+12V
CN6 CN12
IC9
2
3
C11
1
104
7042 C
R13 103
+5V
+5V
R14 R15 R16
103 103 103
CN7
LED_C 7
6
DATA 5
4
+5V 3
2
R30 101 1
C18
3
102
2
DISPL AY
1
B
E10 100uF/16V
+5V
C19 104
IC11 24C04
R29
8 1
103
VCC A0
7 2
WC A1
6 3
SCL A2
5 4
SDA GND
+5V
R42 202
T1_room
C24
E11
47uF/16V
223
A
8