R-350J
18
HIGH VOLTAGE RECTIFIER, HIGH VOLTAGE FUSE AND HIGH VOLTAGE CAPACITOR REMOVAL
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before
operating the oven.
1. Disconnect oven from power supply.
2. Make sure that a definite” click” can be heard when the
microwave oven door is unlatched. (Hold the door in a closed
position with one hand, then push the door open button with
the other, this causes the latch leads to rise, it is then possible
to hear a “click’ as the door switches operate.)
3. Visually check the door and cavity face plate for damage
(dents, cracks, signs of arcing etc.).
Carry out any remedial work that is necessary before operating
the oven.
Do not operate the oven if any of the following conditions exist;
1. Door does not close firmly.
2. Door hinge, support or latch hook is damaged.
3. The door gasket or seal or damaged.
4. The door is bent or warped.
5. There are defective parts in the door interlock system.
6. There are defective parts in the microwave generating and
transmission assembly.
7. There is visible damage to the oven.
Do not operate the oven:
1. Without the RF gasket (Magnetron).
2. If the wave guide or oven cavity are not intact.
3. If the door is not closed.
4. If the outer case (cabinet) is not fitted.
Please refer to ‘OVEN PARTS, CABINET PARTS, CONTROL PANEL PARTS, DOOR PARTS’, when carrying out any of the following
removal procedures:
WARNING FOR WIRING
To prevent an electric shock, take the following manners.
1. Before wiring,
1) Disconnect the power supply.
2) Open the door and wedge the door open.
3) Discharge the high voltage capacitor and wait for 60
seconds.
2. Don't let the wire leads touch to the following parts;
1) High voltage parts:
Magnetron, High voltage transformer, High voltage
capacitor, High voltage rectifier assembly and High
voltage fuse.
2) Hot parts:
Oven lamp, Magnetron, High voltage transformer and
Oven cavity.
3) Sharp edge:
Bottom plate, Oven cavity, Waveguide flange, Chassis
support and other metallic plate.
4) Movable parts (to prevent a fault)
Fan blade, Fan motor, Switch, Switch lever, Open
button.
3. Do not catch the wire leads in the outer case cabinet.
4. Insert the positive lock connector certainly until its pin is
locked. And make sure that the wire leads should not
come off even if the wire leads is pulled.
5. To prevent an error function, connect the wire leads
correctly, referring to the Pictorial Diagram.
Reinstallation
1. Rest transformer on the bottom plate with its primary terminals
toward the oven face plate.
2. Secure transformer with four (4) screws (two (2) screws from
the upper side and two (2) screws from bottom side) to bottom
plate.
3. Reconnect wire leads (primary) to power transformer and
filament leads of transformer to magnetron and high voltage
capacitor. And reconnect the high voltage fuse to the power
transformer. Refer to "PICTORIAL DIAGRAM".
4. Reinstall outer case and check that oven is operating properly.
OUTER CASE REMOVAL
To remove the components, procedure as follows.
1. Disconnect oven from power supply.
2. Open the oven door and block it open.
3. Remove five (5) screws from rear and one (1) screw along the
right side edge of case.
4. Slide the entire case back out about 1 inch (3 cm) to free it
from retaining clips on the cavity face plate.
5. Lift entire case from the unit.
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads (primary) from the power transfomer.
3. Disconnect the high voltage fuse from the power transfomer.
4. Disconnect the filament leads from the magnetron and the
high voltage capacitor.
5. Remove four (4) screws (two (2) screws from the upper side
and two (2) screws from bottom side) holding transformer to
bottom plate.
6. Remove transformer from bottom plate.
POWER TRANSFORMER REMOVAL
6. Discharge the H. V. capacitor before carrying out any further
work.
7. Do not operate the oven with the outer case removed.
NOTE: Step 1, 2 and 6 form the basis of the 3D checks.
CAUTION: DISCONNECT OVEN FROM POWER SUPPLY
BEFORE REMOVING OUTER CASE.
1. CARRY OUT 3D CHECKS.
2. Disconnect the high voltage fuse from the power transformer.
3. Disconnect the high voltage wire of high voltage rectifier
assembly from the magnetron.
Summary of Contents for Carousel R-350J
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