Hitachi RAS-4-HNCE - RAS-3 HVNC

8. Troubleshooting
278
SMGB0079 rev.0 - 01/2013
1 Touch [+] side of the tester to DIP-IPM 52C terminal,
and [-] side to DIP-IPM R, S and T terminals to mea-
sure the resistance. Normal if all three terminals have
1 kΩ or greater.
2 Contrary to [1], touch [-] side of the tester to DIP-IPM
52C terminal, and [+] side to DIP-IPM R, S terminals
to measure the resistance. Normal if all three termi-
nals have 100 kΩ or greater.
3 Touch [-] side of the tester to [-] side of DIP-IPM DMI
(soldered part), and [+] side of the tester to DIP-IPM
R, S terminals to measure the resistance. Normal if all
three terminals have 1 kΩ or greater
4 Contrary to [3], touch [+] side of the tester to [-] side
of DIP-IPM DMI, and [-] side of the tester to DIP-IPM
R, S terminals to measure the resistance. Normal if all
three terminals have 100 kΩ or greater.
Contact with specied terminals
to measure.
Tester
5 Touch [+] side of the tester to [P] of DIP-IPM (solde-
red part), and [-] side 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 [-] side of the tester to [P] of
DIP-IPM (soldered part), and [+] side 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.)
7 Touch [-] side of the tester to [N] of ISPM (soldered
part), and [+] side to ISPM U, V, W terminals to mea-
sure the resistance. Normal if all three terminals have
1 kΩ or greater.
8 Contrary to [7], touch [+] side of the tester to [N] of-
DIP-IPM (soldered part), and [-] side 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.)
Contact with specied terminals
to measure.
Tester