28
R-22GV
R-22GT
R-23GT
R-24GT
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.
DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING
AFTER REMOVING OUTER CASE.
OUTER CASE, REAR CABINET AND POWER SUPPLY CORD REMOVAL
To remove the components, procedure as follows.
1. Disconnect oven from power supply.
2. Remove the screws from the rear and along side the
edge of the case.
3. Slide the case back about 1 inch (3 cm) to free it from the
oven cavity.
4. Lift entire case from the unit.
5. DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE
TOUCHING ANY OVEN COMPONENTS OR WIRING
6. Now, outer case is free.
To remove rear cabinet and power supply cord:
7. Remove the screws holding the rear cabinet to the oven
cavity and blower motor.
8. Remove the one (1) screws holding the switch mounting
angle to the rear cabinet and release the switch mounting
angle from the rear cabinet (for R-23GT and R-24GT).
9. Disconnect the power supply cord from the fuse holder.
10.Remove the one (1) screws holding the grounding wire
of power supply cord to the base plate.
11.Remove the rear cabinet with the power supply cord
from the oven cavity.
12.Loosen the tab of the cord bushing, and remove the
power supply cord with the cord bushing from the rear
cabinet.
13.Remove the cord bushing from the power supply cord,
14.Now, the power supply cord and rear cabinet are free.
POWER TRANSFORMERS (1) AND/OR (2) REMOVAL
1. Disconnect oven from power supply
2. Remove outer case and rear cabinet referring to "OUTER
CASE, REAR CABINET AND POWER SUPPLY CORD
REMOVAL".
3. Disconnect wire leads of power transformers (1) and/or
(2) from magnetrons (1) and/or (2).
4. Disconnect wire leads of power transformers (1) and/or
(2) from high voltage capacitors (1) and/or (2).
5. Disconnect wire leads of high voltage rectifier assembly
from power transformers (1) and/or (2).
6. Remove two (2) screws holding each power transformer
(1) and/or (2) to base plate.
7. Remove the power transformers (1) and/or (2) from base
plate.
8. Now, power transformers (1) and/or (2) are free.
WIRING CAUTION FOR MODEL R-22GT/ R-23GT
As shown in the figure below, the red and gray wires
between the two transformers are of the same length.
Be careful as to connect the wires according to the
Pictorial Diagram S-2. If they incorrectly wired a short
will be placed across the transformers. This could
cause the oven to cycle on the upper thermal cut-out
due to excessive heat being generated within wiring.
Connect the gray lead (after July 1995 production it will
have a blue connector case as shown in the bellow
figure ) to the rear power transformer.
Power
Transformer
(Front)
Power
Transformer
(Rear)
Red
Gray
Blue case
MAGNETRONS (1) AND/OR (2) REMOVAL
Removal
1. Disconnect oven from power supply
2. Remove outer case and rear cabinet referring to "OUTER
CASE, REAR CABINET AND POWER SUPPLY CORD
REMOVAL".
3. Remove the two (2) screws holding magnetron exhaust
duct to upper and lower waveguide.
4. Remove the magnetron exhaust duct from oven cavity.
5. Disconnect wire leads from magnetrons (1) and/or (2).
6. 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.
7. 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.
8. 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.
1. Disconnect oven from power supply.
2. Remove outer case and rear cabinet referring to "OUTER
CASE, REAR CABINET AND POWER SUPPLY CORD
REMOVAL".
3. Remove two (2) screws holding ground side terminals of
high voltage rectifier assembly to the capacitor holder
HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY REMOVAL
