Troubleshooting
SiBE811001EB
291
CONVENI-PACK
Power Transistor Check
CHECK 4
Perform the following procedures prior to check.
[Preparation]
· Tester
[Point of Measurement and Judgement Criteria]
· Measure the resistance value using a tester at each point of measurement below, after 10 minutes power OFF.
Point of Measurement
Judgement Criteria
Remarks
+
–
No.
2 ~ 15k
Ω
2 ~ 15k
Ω
P2
P2
P2
U
V
W
N3
N3
N3
U
V
W
1
2
3
4
5
6
7
8
9
10
11
12
P2
P2
P2
U
V
W
U
V
W
N3
N3
N3
Point of Measurement
Judgement Criteria
Remarks
+
–
No.
0.3 ~ 0.7V
1.2V and over
1.2V and over
P2
P2
P2
U
V
W
N3
N3
N3
U
V
W
1
2
3
4
5
6
7
8
9
10
11
12
P2
P2
P2
U
V
W
U
V
W
N3
N3
N3
[PCB and Circuit Diagram]
(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 1k
Ω
.
Due to condenser charge
and so on, resistance
measurement may require
some time.
15k
Ω
and
above
(including
)
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.
Due to condenser charge
and so on, resistance
measurement may require
some time.
Due to condenser charge
and so on, resistance
measurement may require
some time.
