Troubleshooting
Troubleshooting
Microwave Drop-down Door Series
Microwave Drop-down Door Series
4-7
#826151 - Revision A - March, 2016
TEST
PROCEDURE
COMPONENT TEST
BROKEN 20 AMP FUSE
NOISE FILTER TEST
Perform 3E Checks (page 4-2)1
If the 20 amp fuse is broken when the door is opened, check the primary2
latch switch and monitor switch.
Replace defective switch(es) and 20 amp fuse.3
Perform 4R Checks (4-2)4
Perform 3E Checks (page 4-2)1
Remove wires from noise filter board terminals2
Use an Ohm meter to measure the resistance between:3
a. N and L - read infinite resistance
b. N and White - read zero resistance
c. L and Red - read zero resistance
If incorrect readings are obtained, replace the noise filter4
Perform 4R Checks (4-2)5
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