Check
SiME341909EA
264
Part 6 Service Diagnosis
6.4 Power Transistor Check
CHECK 4
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.
Point of Measurement and Judgment Criteria
Turn OFF the power supply. Then, after a lapse of 10 minutes or more, make measurement of
resistance.
When using the analog type of multimeter,
make measurement in resistance measurement mode in the x1 k
Ω
range.
When using the digital type of multimeter, make measurement in diode check mode.
Preparation
Multimeter
∗
Prepare the analog type of multimeter.
For the digital type of multimeter, those with
diode check function are available for the
checking.
No.
Measuring point
Judgment
Criteria
Remarks
+
–
1
P2
U
2 ~ 15 k
Ω
―
2
P2
V
3
P2
W
4
U
P2
15 k
Ω
and
more
(including
∞
)
Due to
condenser
charge and so
on, resistance
measurement
may require
some time.
5
V
P2
6
W
P2
7
N3
U
8
N3
V
9
N3
W
10
U
N3
2 ~ 15 k
Ω
―
11
V
N3
12
W
N3
No.
Measuring point
Judgment
Criteria
Remarks
+
–
1
P2
U
1.2 V and more
Due to
condenser
charge and so
on, resistance
measurement
may require
some time.
2
P2
V
3
P2
W
4
U
P2
0.3 ~ 0.7 V
―
5
V
P2
6
W
P2
7
N3
U
8
N3
V
9
N3
W
10
U
N3
1.2 V and more
Due to
condenser
charge and so
on, resistance
measurement
may require
some time.
11
V
N3
12
W
N3
Summary of Contents for VRV X RXQ6-48ANR Series
Page 1: ...Service Manual Cooling Only 50 60 Hz RXQ6 48A N R Series SiME341909EA...
Page 289: ...SiME341909EA Wiring Diagrams Part 7 Appendix 283 RXQ10 12ARYFK 2D124184...
Page 290: ...Wiring Diagrams SiME341909EA 284 Part 7 Appendix RXQ14 16ARYFK 2D124183...
Page 295: ...SiME341909EA Wiring Diagrams Part 7 Appendix 289 FXMQ40 50 63 80 100ARV1 3D127112 04 59...
