Sharp R-580D, Service Manual

Page: 23 / 40

R-580D
21
5. Disconnect the wire leads from the power supply cord,
power unit, turntable motor, thermal cut-out (oven),
thermal cut-out (MG.), all switches on the latch hook
and the magnetron.
6. Release the two (2) snap bands of the main wire
harness from the oven cavity.
7. Remove the lamp socket from the lamp angle. Refer to
"OVEN LAMP AND LAMP SOCKET REMOVAL".
8. Remove the two (2) screws holding the front leg to the
oven cavity.
9. Remove the front leg from the oven cavity by releasing
the three (3) tabs.
it from retaining clips on the cavity face plate.
6. Lift entire outer case from the unit.
NOTE: Step 1, 2 and 3 form the basis of the 3D checks.
CAUTION: 1. DISCONNECT OVEN FROM POWER SUP
PLY BEFORE REMOVING OUTER CASE.
2. TO DISCHARGE THE HIGH VOLTAGE
CAPACITOR, WAIT FOR 60 SECONDS
BEFORE TOUCHING ANY OVEN COM-
PONENTS OR WIRING.
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. 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) To discharge the high voltage capacitor, 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,
Angles, Guides and other metallic plate.
4) Movable parts (to prevent a fault)
Close flow fan, Fan motor, Switch.
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.
OUTER CASE REMOVAL
To remove the outer case, proceed as follows.
1. Disconnect the oven from power supply.
2. Open the oven door and wedge it open.
3. To discharge the high voltage capacitor, wait for 60
seconds.
4. Remove the five (5) screws from the the rear cabinet
and the two (2) screws along the right and left sides of
outer case.
5. Slide the entire outer case back out about 3 cm to free
Before removal of the fuse, noise filter, high voltage fuse,
power transformer, high voltage capacitor, high voltage
rectifire, magnetron, fan motor and turntable motor, the
oven cavity must be removed from base plate as follows.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove outer case (refer to "OUTER CASE
REMOVAL").
3. It is recommended that the door is removed from the
oven cavity. Refer to "DOOR REPLACEMENT".
4. Remove the one (1) screw holding the Green/Yellow
wire to the bottom plate.
OVEN CAVITY ASSEMBLY REMOVAL