36
Installation and Maintenance
Service Manual
Test Point
No.
Test Point
Corresponding Component
Test value under normal condition
Test1
Between A and C
Neutral wire wire and live wire
160V~265V
Test2
Between B and C
Neutral wire wire and live wire
160V~265V
Test3
Between D and E
Electrolytic capacitor of DC bus bar
DC 180V~380V
Test4
Between F and G
Electrolytic capacitor of switch power
supply
DC 180V~380V
Test5
Two ends of diode D10 in
H
D10 (IPM module boo 15V
power supply)
DC 14.5V~15.6V
Test6
Two ends of electrolytic capacitor C708 in I
C708 (+15V power supply)
DC 14.5V~15.6V
Test7
Two ends of electrolytic capacitor C715 in J
C715 (+12V power supply)
DC 12V~13V
Test8
Two ends of electrolytic capacitor C710 in K
C710 (+5V power supply)
DC 5V
Test9
Two ends of electrolytic capacitor C226 in L
C226 (+3.3V power supply)
DC 3.3V
Test
10
Two ends of electrolytic capacitor C24 in M
C24
DC 56V
Test11
Between N point and GND
N end of R78 grounding (signal receiving
terminal of ODU)
Fluctuate between 0~3.3V
Test12
U12 in P
Between 1 and 2 of U12 pin
Fluctuate between 0~3.3V
Test13
Between O point and GND
O end of R75 grounding (signal
receiving terminal of ODU)
Fluctuate between 0~3.3V
Test14
U15 in Q
Between 3 and 4 of U15 pin
Fluctuate between 0~3.3V
