R-22JT
31
11.Loosen the tab of the cord bushing, and remove the
power supply cord with the cord bushing from the rear
cabinet.
12.Remove the cord bushing from the power supply cord,
13.Now, the power supply cord and rear cabinet are free.
8. Disconnect the power supply cord from the supply
harness.
9. Remove the one (1) screw holding the grounding wire of
power supply cord to the oven cavity.
10.Remove the rear cabinet with the power supply cord
from the oven cavity.
POWER TRANSFORMERS (1) AND/OR (2) REMOVAL
Removal
1. Disconnect the power supply cord and then remove
outer case and rear cabinet, referring to "OUTER CASE,
REAR CABINET AND POWER SUPPLY CORD
REMOVAL".
2. Open the oven door and block it open.
3. Discharge two high voltage capacitors.
4. Remove the two (2) screws holding magnetron exhaust
duct to upper and lower waveguide.
5. Remove the magnetron exhaust duct from oven cavity.
6. Disconnect wire leads from magnetrons (1) and/or (2).
7. Disconnect magnetron thermistor from the connector of
the stop switch harness.
8. Remove the one (1) screw holding the thermistor angle
MAGNETRONS (1) AND/OR (2) REMOVAL
to the upper magnetron.
9. Remove the four (4) screws holding each magnetron (1)
and/or (2) to upper and/or lower waveguide. When
removing the screws, hold the magnetron to prevent it
from falling.
10.Remove the magnetrons (1) and/or (2) from upper and/
or lower waveguide with care so magnetron antenna is
not hit by any metal object around antenna.
11.Pull out the thermistor angle from the upper magnetron.
12.Now, the magnetrons (1) and/or (2) are free.
CAUTION: WHEN REPLACING MAGNETRON, BE SURE
THE R.F. GASKET IS IN PLACE AND MOUNT-
ING SCREWS ARE TIGHTENED SECURELY.
Removal
1. Disconnect the power supply cord and then remove
outer case and rear cabinet, referring to "OUTER CASE,
REAR CABINET AND POWER SUPPLY CORD
REMOVAL".
2. Open the oven door and block it open.
3. Discharge two high voltage capacitors.
4. Remove the upper magnetron from the upper waveguide
flange, referring to "MAGNETRON (1) AND /OR (2)
REMOVAL".
5. Now, the upper magnetron with the magnetron thermistor
should be free.
6. Remove the thermistor angle from the upper magnetron
by pulling out.
7. Straighten the tab of the magnetron thermistor angle
holding the magnetron thermistor.
8. Remove the magnetron thermistor from the thermistor
angle.
9. Now, the magnetron thermistor is free.
MAGNETRON THERMISTOR REPLACEMENT
Re-install
1. Install the magnetron thermistor to the thermistor angle
as shown in Figure C-1.
1. Disconnect the power supply cord and then remove
outer case and rear cabinet, referring to "OUTER CASE,
REAR CABINET AND POWER SUPPLY CORD
REMOVAL".
2. Open the oven door and block it open.
3. Discharge two high voltage capacitors.
4. Disconnect wire leads of power transformers (1) and/or
(2) from magnetrons (1) and/or (2).
5. Remove the wire leads of power transformers from the
wire holder.
6. Pull out the wire leads of power transformers from the
tube.
7. Disconnect wire leads of power transformers (1) and/or
(2) from high voltage capacitors (1) and/or (2).
8. Disconnect the high voltage wire lead(s) from power
transformers (1) and/or (2).
9. Disconnect the main wire harness from power
transformers (1) and/or (2).
10.Remove two (2) screws holding each power transformer
(1) and/or (2) to base plate.
11.Remove the power transformers (1) and/or (2) from base
plate.
12.Now, power transformers (1) and/or (2) are free.
Figure C-1. Magnetron thermistor installation
2. Hold the magnetron thermistor to the thermistor angle by
bending the tab of the thermistor angle.
3. Insert the thermistor angle between the 2nd. fin and 3rd.
fin from the upper fin of the upper magnetron and push
it until the thermistor angle stops.
Upper magnetron
Upper fin
Tab
Thermistor
angle
Magnetron
thermistor
