10 Troubleshooting
Checking procedure for main parts
SMGB0091 rev.2 - 11/2015
273
10
4
By touching the + side of the tester to the N terminal of
transistor module and the - side of tester to U, V and W of
transistor module, measure the resistance. If all the resistances
are greater than 100kΩ, it is normal.
Diode module checking procedure
Outer appearance and internal circuit of diode module:
If items [1] – [4] are performed and the results are satisfactory, the diode module is normal.
Measure it under 1kΩ range of a tester.
1
By touching the + side of the tester to the + terminal of diode
module and the - side of tester to the ~ terminals (A) of the
diode module, measure the resistance. If all the resistances are
from 5 to 50kΩ, it is normal.
2
By touching the - side of the tester to the + terminal of diode
module and the + side of tester to the ~ terminals (A) of the
diode module, measure the resistance. If all the resistances are
greater than 500kΩ, it is normal.
3
By touching the - side of the tester to the - terminal of diode
module and the + side of tester to the ~ terminals (A) of the
diode module, measure the resistance. If all the resistances are
from 5 to 50kΩ, it is normal.
4
By touching the + side of the tester to the - terminal of diode
module and the - side of tester to the ~ terminals (A) of the
diode module, measure the resistance. If all the resistances are
greater than 500kΩ, it is normal.