Fujitsu AS*G09KXCA Series Service Instruction page 81

SERVICE PARTS INFORMATION 6
Main PCB (IPM Check)
Check Point 1
Disconnect the connection wires between the Main PCB - Compressor.
Set the tester to the "Resistance" mode, and measure the resistance between the following terminals.
TM301 (P) - W400(S) / W401(R) / W402(C)
TM302 (N) - W400(S) / W401(R) / W402(C)
*Make sure that the compresor wires are not short-circuit during the measuring.
Judge the result of as follows:
Terminal
Tester(+) Tester(-)
P W400
P W401
P W402
W400 P
W401 P
W402 P
N W400
N W401
N W402
W400 N
W401 N
W402 N
Check Point 2
Set the tester to the "Diode" mode, and measure the voltage value between the following terminals.
*Make sure that the compresor wires are not short-circuit during the measuring.
Judge the result of as follows:
Terminal
Tester(+) Tester(-)
W400
P
W401
P
W402
P
W400
P
W401
P
W402
P
W400
N
W401
N
W402
N
W400
N
W401
N
W402
N
Resistance value
Over 2k
(Including )
Over 20k
(Including )
Over 2k
(Including )
Tester display
0.3V 0.7V
02-47