Daikin RTSQ20PY1 Service Manual page 423

SiBE31-801_C
1. Power module checking
When using the analog type of multiple
tester, make measurement in resistance
measurement mode in the x1k
2. Diode module checking
When using the analog type of multiple
tester, make measurement in resistance
measurement mode in the x1k
Appendix
Method of Checking the Inverter's Power Transistors and Diode Modules
Measuring
point
No. Criterion
+ -
1 P3 U
2 P3 V 2 to 15kΩ
3 P3 W
4 U P3
5 V P3
Not less
6 W P3
than
15kΩ
7 N3 U
(including)
8 N3 V
9 N3 W
10 U N3
11 V N3 2 to 15kΩ
12 W N3
Measuring
point
No. Criterion
+ -
1 P1 J1
2 P1 J2 2 to 15kΩ
3 P1 J3
4 J1 P1
5 J2 P1
Not less
6 J3 P1
than
15kΩ
7 N3 J1
(including)
8 N3 J2
9 N3 J3
10 J1 N3
11 J2 N3 2 to 15kΩ
12 J3 N3
When using the digital type of multiple
tester, make measurement in diode check
Ω
range. mode (
Remark No.
1
2
3
4
It may take
5
time to
6
determine the
resistance due
7
to capacitor
8
charge or else.
9
10
11
12
When using the digital type of multiple
tester, make measurement in diode check
Ω
range. mode (
Remark No.
1
2
3
4
It may take
5
time to
6
determine the
resistance due
7
to capacitor
8
charge or else.
9
10
11
12
).
Measuring
point
Criterion
+ -
P3 U Not less It may take time to
than determine the voltage
P3 V
1.2V due to capacitor
P3 W (including) charge or else.
U P3
V P3
W P3
0.3 to 0.7V
N3 U
N3 V
N3 W
U N3 Not less It may take time to
than determine the voltage
V N3
1.2V due to capacitor
W N3 (including) charge or else.
).
Measuring
point
Criterion
+ -
P1 J1 Not less It may take time to
than determine the voltage
P1 J2
1.2V due to capacitor
P1 J3 (including) charge or else.
J1 P1
J2 P1
J3 P1
0.3 to 0.7V
N3 J1
N3 J2
N3 J3
J1 N3 Not less It may take time to
than determine the voltage
J2 N3
1.2V due to capacitor
J3 N3 (including) charge or else.
Remark
Remark
412