Hitachi RAS-(4-6)HVRNS2E - Spare Parts Information

8 Troubleshooting
315
SMGB0064 rev.0 - 08/2011
8
5. Touch [+] of the tester to [P] of DIP-IPM (soldered part), and [-]
to DIP-IPM U, V, W terminals to measure the resistance.
Normal if all three terminals have 1 kΩ or greater.
6. Contrary to [5], touch [-] of the tester to [P] of DIP-IPM (soldered
part), and [+] to DIP-IPM U, V, W terminals to measure the resist-
ance
. Normal if all three terminals have 30 kΩ or greater. (Resistance
gradually increases during measurement.)
7. Touch [-] of the tester to [N] of ISPM (soldered part), and [+] to
ISPM U, V, W terminals to measure the resistance.
Normal if all three terminals have 1 kΩ or greater.
8. Contrary to [7], touch [+] of the tester to [N] of DIP-IPM (sol-
dered part), and [-] to DIP-IPM U, V, W terminals to measure the
resistance.
Normal if all three terminals have 30 kΩ or greater.
(Resistance gradually increases during measurement.)
1. Tester.
2. Contact with specied terminals to measure.
Non-faulty if [9] – [13] are checked and satised.
(Measure with 1 kΩ range of a tester.)
1
2
• Internal Circuit of ACT Part of Inverter Module
1. External Appearance and Internal Circuit of Transistor Module .
N O T E
DO NOT use a digital tester
1
9. Check items [1] – [8].
10. Touch [+] of the tester to DIP-IPM DCL2 terminal, and [-] to
[P] of ISPM/DIP-IPM (soldered part) to measure the resistance.
Normal if all three terminals have 100 kΩ or greater
11. Contrary to [10], touch [-] of the tester to DIP-IPM DCL2 ter-
minal, and [+] to [P] of DIP-IPM (soldered part) to measure the
resistance.
Normal if all three terminals have 1 kΩ or greater.
12. Touch [+] of the tester to DIP-IPM DCL2 terminal, and [-] to [N]
of DIP-IPM (soldered part) to measure the resistance. Normal if
all three terminals have 100 kΩ or greater.
13. Contrary to [12], touch [-] of the tester to DIP-IPM DCL2 ter-
minal, and [+] to [N] of DIP-IPM (soldered part) to measure the
resistance.
Normal if all three terminals have 10 kΩ or greater.
(Resistance gradually increases during measurement.)
1. Tester.
2. Contact with specied terminals to measure.
1
2