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8 Troubleshooting
9 Check items [1] – [8].
10 Touch [+] side of the tester to DIP-IPM DCL2 terminal,
and [-] side 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 [-] side of the tester to DIP-
IPM DCL2 terminal, and [+] side to [P] of DIP-IPM
(soldered part) to measure the resistance. Normal if
all three terminals have 1 kΩ or greater.
12 Touch [+] side of the tester to DIP-IPM DCL2 terminal,
and [-] side to [N] of DIP-IPM (soldered part) to meas-
ure the resistance. Normal if all three terminals have
100 kΩ or greater.
13 Contrary to [12], touch [-] side of the tester to DIP-
IPM DCL2 terminal, and [+] side 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.)
Checking Method of Resistance for Inrush Current Prevention (Built-in Thermal Fuse)
(Measure the resistance under 1 kΩ range of a circuit tester.)
N O T E
DO NOT use a digital tester.
+
By placing the
side of tester to the
(soldering portion) on inverter PCB and the
tester to DCL1 on inverter PCB, measure the resistance.
If the resistance is around 500Ω, it is normal. If the resist-
ance is 0Ω or infinity Ω, it is abnormal.
305
SMGB0087 rev.0 - 12/2013
Tester
+
side of DM1
-
side of
Contact with specified terminals
to measure.
DCL1
DM1 -
Contact with specified terminals
+
to measure.
-
Tester
8
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Table of Contents
Troubleshooting
