Specifications

Troubleshooting by Remote Controller SiBE341027
182 Service Diagnosis
Power Transistor Check
CHECK 4
[Preparation]
·
Tester
[Point of Measurement and Judgement Criteria]
·
Measure the resistance value using a tester at each point of measurement below, 10 minutes later after power OFF.
+–
[PCB and Circuit Diagram]
Perform the following procedures prior to check.
(1) Power Off.
(2) Remove all the wiring connected to the PCB where power transistors are mounted on.
To use analog tester:
Measurement in the resistance value mode in the range of
multiplying 1kΩ.
No.
Point of Measurement
Judgement Criteria
2 ~ 15kΩ
Remarks
15kΩ and
above
(including )
Due to condenser charge
and so on, resistance
measurement may require
some time.
2 ~ 15kΩ
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
11
12
10
11
12
+–
P2
P2
P2
U
V
W
N3
N3
N3
U
V
W
P2
P2
P2
U
V
W
N3
N3
N3
U
V
W
U
V
W
P2
P2
P2
U
V
W
N3
N3
N3
U
V
W
P2
P2
P2
U
V
W
N3
N3
N3
No.
Point of Measurement
Judgement Criteria
1.2V and over
0.3 ~ 0.7V
1.2V and over
Due to condenser charge
and so on, resistance
measurement may require
some time.
Remarks
Due to condenser charge
and so on, resistance
measurement may require
some time.
To use digital tester:
Measurement is executed in the diode check mode. ( )
∗ Preparing a tester in the analog system is recommended.
A tester in the digital system with diode check function will
be usable.