Fujitsu ARC90LHTA - Page 66

SERVICE PARTS INFORMATION 4
IPM
(Mounted on Inverter PCB)
Check Point 1
Check Point 2
Terminal U
Terminal V
Terminal W
Terminal U
Terminal V
Terminal W
Terminal
U
 Disconnect the connection wires between the Inverter
PCB - electrolytic capacitor and Inverter PCB - Inverter
Compressor.
Set the tester to the "Diode" mode, and measure the voltage value between the following terminals.
 Judge the result of as follows:
All 6 points several M or greater : Normal
1 or more points several k to short : Defective
Judge the result of as follows:
Tester display
[V]
Tester display
[V]
Red wire
Tester display
[V]
(P)
Tester display
[V]
White wire
Tester display
[V]
(N)
Tester display
[V]
04-103
Tester - side
(black)
Tester +side
(red)
All 6 points several 0.3V to 0.7V : Normal
1 or more points under 0.1V or over load : Defective
 Set the tester to the "Resistance" mode, and measure
the resistance between the following terminals.
Red wire (P) - screw terminals U/V/W
White wire (N) - screw terminals U/V/W
Inverter PCB
N
P
W
V
02-35
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