48
Installation and Maintenance
Service Manual
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Test1
Test2
Test3
Test4
Test5
E
G
I
H
F
D
B
A
C
L
Test9
Test6
K
J
Tset7
M
N
Test11
Test10
Test8
S
T
Test12
1.Key detection point
Test NO
Test point
Corresponding component
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condition
Test 1
Between A and C
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160V~265V
Test 2
Between B and C
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160V~265V
Test 3
Between D and E
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DC 180V~380V
Test 4
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Electrolytic capacitor of power
DC 180V~380V
Test 5
Two ends of diode D15
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DC 14.5V~15.6V
Test 6
Two ends of electrolytic
capacitor C715
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DC 12V~13V
Test 7
Two ends of electrolytic
capacitor C710
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DC 5V
Test 8
Two ends of electrolytic
capacitor C226
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DC 3.3V
Test 9
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C912
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DC 15V~18V
Test 10
Between M to GND
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Test 11
Between N to GND
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Test 12
Between S and T
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DC 56V
