Fujitsu ASU30RLE Service Instruction page 88

SERVICE PARTS INFORMATION 8
IPM
(Mounted on Transistor PCB)
Test 1 : Check the Transistor of PCB ( for Resistance )
Disconnect the connection wires between the Transistor
PCB - Capacitor PCB and Transistor PCB - Inverter
Compressor.
Set the tester to the "Resistance" mode, and measure
the resistance between the following terminals.
TM301 (P) - TM305(U) / TM304(V) / TM303(W)
TM302 (N) - TM305(U) / TM304(V) / TM303(W)
Judge the result of
Terminal
Tester(+) Tester(-)
P U
P V
P W
U P
V P
W
P
N U
N V
N W
U N
V N
W N
Test 2 : Check the Transistor of PCB ( for Diode )
Set the tester to the "Diode" mode, and measure the voltage value between the following terminals.
Judge the result of as follows:
Terminal
Tester(+) Tester(-)
P U
P V
P W
U
P
V P
W P
N U
N V
N W
U N
V N
W N
as follows:
Resistance value
Over 2k
(Including )
Over 20k
(Including )
Over 2k
(Including )
Tester display
0.3V 0.7V
02-52