3-18
TEST CHARTS
TEST PROCEDURE
RESULT
COMPONENT
1. Set the ohmmeter to the
R x 1
scale, and measure
the:
a) Primary winding.
b) Secondary to ground.
c) Filament winding.
2. Set the ohmmeter to its
R x 1000
scale, and mea-
sure the:
a) Primary to ground.
b) Filament to ground.
Magnetron (with wire leads un-
plugged). NOTE: A microwave
energy leakage test must always
be performed when the oven is
serviced for any reason.
1. Set the ohmmeter to the
R x 1
scale, and measure
the:
a) Filament terminal.
2. Set the ommeter to the
R x 1000
scale and mea-
sure the:
a) Filament winding to
chassis.
a) Normal readings - Less
than 1 ohm.
a) Normal = infinity.
High-Voltage Transformer (with
wire leads unplugged).
a) 0.3 to 0.5 ohms.
b) 65 to 120 ohms.
c) 0.2 to 0.4 ohms
a) Normal = infinity.
b) Normal = infinity.
NOTE: Replace the magnetron
if the checks and all of the high
voltage component tests are
good, but the unit still does not
heat a load.
COMPONENT TESTING
FILAMENT WINDING
SECONDARY
WINDING
HIGH VOLTAGE
TRANSFORMER
PRIMARY WINDING
WARNING
ELECTRICAL SHOCK HAZARD
DISCONNECT THE POWER SUPPLY CORD
FROM THE WALL OUTLET WHEN REMOVING
THE CABINET FROM THE OVEN. PROCEED
WITH THE TESTS ONLY AFTER DISCHARG-
ING THE HIGH VOLTAGE CAPACITOR, AND
REMOVING THE WIRE LEADS FROM THE
PRIMARY WINDING OF THE HIGH VOLTAGE
TRANSFORMER.
Summary of Contents for 1997 "E"
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