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 bootstrap + 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
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