21
R-3A56
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before
operating the oven.
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.
1. CARRY OUT 3D CHECKS.
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;
Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal
procedures:
To remove the components, procedure as follows.
1. Disconnect oven from power supply.
2. Remove four(4) screws from rear and two(2) screwsalong
the right side edge of case.
OUTER CASE REMOVAL
3. Slide the entire case back out about 1 inch(3 cm) to free
it from retaining clips on the cavity face plate.
4. Lift entire case from the unit.
CAUTION: DISCONNECT OVEN FROM POWER SUP-
PLY BEFORE REMOVING OUTER CASE.
POWER TRANSFORMER REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from power transformer,
magnetron and capacitor terminals.
3. Remove four (4) screws holding transformer to base
plate (right).
4. Remove transformer.
Re-install
1. Rest transformer on the base cabinet with its primary
terminals toward the oven face plate.
2. Transformer with four screws to base plate (right).
3. Re-connect wire leads (primary and high voltage) to
power transformer and filament leads of transformer to
magnetron and high voltage capacitor. Refer to
"PICTORIAL DIAGRAM".
4. Re-install outer case and check that oven is operating
properly.
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from magnetron.
3. Carefully loosen four (4) screws holding magnetron to
waveguide flange.
CAUTION: WHEN REPLACING MAGNETRON, BE SURE
THE R.F. GASKET IS IN PLACE, AND MOUNTING
SCREWS ARE TIGHTENED SECURELY.
MAGNETRON REMOVAL
HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL
5. Disconnect wire leads from capacitor and remove
capacitor holder. Capacitor is now free.
CAUTION: WHEN REPLACING HIGH VOLTAGE
RECTIFIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH VOLTAGE
RECTIFIER MUST BE SECURED FIRMLY WITH A
GROUNDING SCREW.
1. CARRY OUT 3D CHECKS.
2. Remove one (1) screw holding capacitor holder to oven
cavity rear plate.
3. Disconnect rectifier terminal from capacitor.
Rectifier and high voltage assembly is now free.
4. Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
OVEN LAMP AND LAMP SOCKET REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from the lamp socket.
3. Remove the lamp holder from partition angle.
4. Remove the oven lamp from the lamp socket.
Summary of Contents for R-3A56
Page 2: ...R 3A56 ...
