Hitachi YUTAKI Series - RHUE-(5;6)AHN. Procedure for Checking the ISPM

Troubleshooting
Service Manual
220
Checking procedure for main parts
SMGB0066 rev.0 - 12/2009
 
● Procedureusingananalogtester:
Checking the diode module:
By touching the + side of the tester to the P1 1.
terminal of ISPM and the - side of the tester to R
andSofISPM,measuretheresistance.Ifallthe
resistancesaremorethan1kΩ,itisnormal.
By touching the - side of the tester to the P1 2.
terminal of ISPM and the + side of the tester to R
andSofISPM,measuretheresistance.Ifallthe
resistancesaremorethan100kΩ,itisnormal.
By touching the - side of the tester to the N 3.
terminal of ISPM and the + side of the tester to R
andSofISPM,measuretheresistance.Ifallthe
resistancesaremorethan1kΩ,itisnormal.
By touching the + side of the tester to the N 4.
terminal of ISPM and the - side of the tester to R
andSofISPM,measuretheresistance.Ifallthe
resistancesaremorethan100kΩ,itisnormal.
Remove all the terminals of the ISPM before check. Ifitems(a)to(h)areperformedandtheresultsaresatisfactory,ISPMis
normal.Measureitunder1kΩrangeofatester.

warning
Electrical hazard. Risk of electrical shock. Perform the high voltage discharge procedure as described. -
Capacitors
LED 201
NoiselterPCB
Fuses
Reactor
Magnetic contactor
Magnetic contactor Inverter module ISPM
RecticationpartsofinternalcircuitofISPM(common)