20
6 Troubleshooting Guide
6.1.
Cautions to be observed when
troubleshooting
Unlike many other appliances, the microwave oven is high-volt-
age, high-current equipment. Though it is free from danger in
ordinary use, extreme care should be taken during repair.
6.1.1.
Check the grounding
Do not operate on a 2-wire extension cord. The microwave
oven is designed to be used in a completely grounded condi-
tion. It is imperative, therefore, to make sure it is properly
grounded before beginning repair work.
6.1.2.
If the door lock, the door switch,
the door seal or the door develops
a malfunction, be sure not to oper-
ate the oven until complete repairs
are made.
If the oven is operated with any of these parts in imperfect con-
dition, hazardous microwave leakage might occur.
6.1.3.
Warning about the electric charge
in the high voltage capacitor
For about 30 seconds after the oven is turned off, an electric
charge remains in the high voltage capacitor. When replacing
or checking parts, remove the power plug from the outlet, wait
30 seconds and short the terminal of the high voltage capacitor
(terminal of lead wire from diode) to chassis ground with an
insulated jumper lead wire or an insulated handle screwdriver
discharge.
6.1.4.
When parts must be replaced,
remove the power plug from
the outlet.
6.1.5.
When the 2.5 Amp. and/or 12 Amp.
fuse is blown due to the operation
of the interlock monitor switch.
1. This is mandatory. Refer to “Measurements and
Adjustments” for these switches.
2. When replacing the fuse, confirm that it has the
appropriate rating for these models.
3. When replacing faulty switches, be sure mounting tabs
are not bent, broken or otherwise deficient in their ability
to hold the switches.
6.1.6.
Avoid inserting nails, wire, etc.
through holes in unit during opera-
tion.
Never insert a wire, nail or any other metal object through the
lamp holes on the cavity or any other holes or gaps, because
such objects may work as an antenna and cause microwave
leakage.
Summary of Contents for NE-2153-2EYG
Page 3: ...3 3 Location of Controls and Components 3 1 Outline diagram...
Page 4: ...4...
Page 5: ...5 4 Operating Instructions 4 1 Operation procedure...
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Page 22: ...22 6 2 Troubleshooting guide...
Page 28: ...28 9 Wiring Connection Diagram NOTE When replacing check the lead wire colour as shown...
