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R-23GT-F
R-24GT-F
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)
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 to
the upper magnetron.
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.
Re-install
1. Apply the silicone grease (Shinetsu silicone grease G746 of
Shinetsu Chemical Co. Ltd.) to the thermo-contactor and
the magnetron thermistor.
2. Insert the thermo-contactor between the 1st. fin and the
2nd. fin.
3. Install the magnetron thermistor to the thermistor angle as
shown in Figure C-1.
4. Hold the magnetron thermistor to the thermistor angle by
bending the tab of the thermistor angle.
5. 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.
POWER TRANSFORMERS (1) AND/OR (2) REMOVAL
MAGNETRONS (1) AND/OR (2) REMOVAL
MAGNETRON THERMISTOR REPLACEMENT
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.
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 (1).
12.Remove the thermo-contactor from the upper magnetron
(1).
13.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.
NOTE:The magnetron thermistor should be between the
upper fin and the 2nd. fin.
6. Re-install the upper magnetron to the upper waveguide
flange with four (4) screws.
7. Re-install the thermistor angle to the upper waveguide
flange with one (1) screw.
8. Re-install the magnetron exhaust duct to the upper and
lower waveguide flanges with two (2) screws.
9. Route the thermistor harness under the magnetron
temperature fuse.
10.Connect the thermistor harness to the stop switch harness.
11.Connect the wire leads to the upper magnetron, referring to
the pictorial diagram.
12.Re-install the power supply cord, rear cabinet and outer
case cabinet to the oven by reversing the procedures of
"OUTER CASE, REAR CABINET AND POWER SUPPLY
CORD REMOVAL".
CAUTION: WHEN REPLACING MAGNETRON, BE SURE
THE R.F. GASKET IS IN PLACE AND MOUNT-
ING SCREWS ARE TIGHTENED SECURELY.
Apply grease here.
Figure C-1. Magnetron thermistor installation
32
Upper magnetron
Upper fin
Thermo contactor
Thermistor
angle
Magnetron
Tab
thermistor
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