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Test point
No.
n
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t
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d
n
o
c
l
a
m
r
o
n
r
e
d
n
u
e
u
l
a
v
t
s
e
T
s
t
n
e
m
e
l
e
d
e
t
a
l
e
R
t
n
i
o
p
t
s
e
T
V
5
6
2
-
V
0
6
1
e
r
i
w
e
v
il
,
e
r
i
w
l
a
r
t
u
e
N
C
d
n
a
A
n
e
e
w
t
e
B
1
t
s
e
T
V
5
6
2
-
V
0
6
1
e
r
i
w
e
v
il
,
e
r
i
w
l
a
r
t
u
e
N
C
d
n
a
B
n
e
e
w
t
e
B
2
t
s
e
T
Test 3
Between D and E
Electrolytic capacitor of DC bas bar
DC 180V-380V
Test 4
Between F and G
Electrolytic capacitor of switch power
DC 180V-380V
Test 5
Both ends of diode
D10
V
6
.
5
1
-
V
5
.
4
1
C
D
)
V
5
1
+
e
l
u
d
o
m
M
P
I
(
0
1
D
Test 6
Both ends of electrolytic
Both ends of electrolytic
Both ends of electrolytic
capacitor C40
V
3
1
-
V
2
1
C
D
)
r
e
w
o
p
V
2
1
+
(
0
4
C
Test 7
capacitor C82
V
5
C
D
)
r
e
w
o
p
V
5
+
(
2
8
C
Test 8
capacitor C225
V
3
.
3
C
D
)
r
e
w
o
p
V
3
.
3
+
(
5
2
2
C
Test 9
Between S and T
Communication circular current
DC 56V
Test 10
Between point N and
GND
R78 to N terminal (ground) (signal receiving
terminal of outdoor unit)
Jumping between 0V and 3.3V
Test 11
U12
Between 1 and 2 at leading foot of U12
Jumping between 0V and 3.3V
Test 12
Between point M and
GND
R75 to M terminal (signal sending terminal of
outdoor unit)
Jumping between 0V and 3.3V
Test 13
U15
Between 3 and 4 at leading foot of U15
Jumping between 0V and 3.3V
