Fujitsu AR G30LHTBP Series Service Instructions Manual page 85

SERVICE PARTS INFORMATION 7
IPM
(
Mounted on Transistor PCB)
Check Point 1
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 as follows:
Terminal
Tester(+) Tester(-)
U
P V
W
U
V P
W
U
N V
W
U
V N
W
Check Point 2
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(-)
U
P V
W
U
V P
W
U
N
V
W
U
V N
W
Resistance value
Over 2k
(Including )
Over 20k
(Including )
Over 2k
(Including )
Tester display
0.3V 0.7V
P
CN301 CN303
IPM CONTROL WHITE WHITE
02-48
YELLOW
TM301
W301
TM305
U
RED
W305
TM304
V
WHITE
W304
TM303
W
BLACK
W303
W302
N
TM302
BLUE