Hitachi RASC-4HNPE Service Manual page 281

10 Troubleshooting
Checking procedure for main parts
Checking method of resistance for inrush current prevention (Built-in thermal fuse)
(Measure the resistance under 1 kΩ range of a circuit tester.)
+
By placing the side of tester to the
(soldering portion) on DIP-IPM and the
tester to DCL1 DIP-IPM, measure the resistance. If the
resistance is around 500Ω, it is normal. If the resistance
is 0Ω or infinity Ω, it is abnormal.
Checking method of fuse for DIP-IPM protection (EF331)
(Measure the resistance under 1 kΩ range of a circuit tester.)
-
+
By placing the and side of tester to EF331 on
DIP-IPM, measure the resistance.
If the resistance is 0Ω, it is normal.
271 SMGB0091 rev.2 - 11/2015
+
side of DM1
-
side of
Contact with specified
Tester
terminals to measure.
EF331
Contact with specified
Tester
terminals to measure.
10