Sharp R-580D, Service Manual

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R-580D
22
10.Remove the two (2) screws holding the waveguide
flange of the oven cavity to the base plate.
11.Remove the three (3) screws holding the base plate to
the oven cavity front plate.
12.Remove the three (3) screws holding the base plate to
the oven cavity back plate.
13.Lift up the oven cavity assembly and remove it from the
base plate.
14.Now the fuse, noise filter, high voltage fuse, power
transformer, high voltage capacitor, high voltage rectifier
and fan motor can be found on the base plate.
15.The magnetron can be found at wavegide flange of the
oven cavity.
16. The turntable motor can be found under the oven
cavity bottom plate.
Reinstallation
1. Make sure that the electrical parts on the base plate are
reinstalled at their positions.
2. Make sure that the wire leads are reconnected to their
correct positions. Refer to the "PICTORIAL DIAGRAM".
3. Reinstall the oven cavity assembly on the base plate.
4. Hold the base plate to the oven cavity back plate with
three (3) screws.
5. Hold the base plate to the oven cavity front plate with
three (3) screws.
6. Hold the waveguide flane of the oven cavity to the base
plate with two (2) screws.
7. Reinstall the front leg to the oven cavity front plate.
8. Hold the front leg to the oven cavity front plate with two
(2) screws.
9. Reinstall the lamp socket to the lamp angle. Refer to
procedures of "OVEN LAMP AND LAMP SOCKET
REMOVAL".
10.Insert the two (2) snap bands of main wire harness to
the two (2) holes of oven cavity.
11. Reconnect the wire leads to the magnetron, all switches,
thermal cut-out (MG.), thermal cut-out (oven.), lamp
socket, turntable motor and power supply cord. Refer
to the "PICTORIAL DIAGRAM".
12.Hold the Green/Yellow wire of the power supply cord to
the bottom plate with (1) screw.
13. If the door has been removed, reinstall the door to the
oven cavity. Refer to "DOOR REPLACEMENT".
14. Now, the oven cavity assembly should be reinstalled.
1. CARRY OUT 3D CHECKS.
2. Remove outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Discharge the high voltage capacitor.
5. Disconnect the wire leads (primary and high voltage)
from power transformer and the filament leads from the
magnetron and capacitor terminals.
6. Remove four (4) screws holding transformer to base
plate.
7. Remove transformer from base plate.
POWER TRANSFORMER REMOVAL
Reinstallation
1. Rest transformer on the base plate with its primary
terminals toward the left side.
2. Secure transformer with four screws to base plate.
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. Reinstall the oven cavity assembly to the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
5. Re-install outer case and check that oven is operating
properly.
HIGH VOLTAGE RECTIFIER, HIGH VOLTAGE FUSE AND HIGH VOLTAGE CAPACITOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Discharge the high voltage capacitor.
5. Disconnect the high voltage fuse from the power
transformer.
6. Disconnect the high voltage wire of the high voltage
rectifier assembly from the magnetron.
7. Disconnect the filament lead (short one) of the power
transformer from the high voltage capacitor.
8. Remove one (1) screw holding capacitor holder to
base plate.
9. Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
10.Disconnect rectifier terminal from the capacitor.
High voltage rectifier assembly is now free.
11.Disconnect the high voltage fuse from the high voltage
capacitor. Now, the high voltage fuse is free.
12.Remove the capacitor holder. The capacitor is now free.
CAUTION: WHEN REPLACING HIGH VOLTAGE REC-
TIFIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A GROUNDING SCREW.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Discharge the high voltage capacitor.
5. Now, the wire leads should be disconnected from the
magnetron and thermal cut-out (MG).
MAGNETRON REMOVAL
6. Carefully remove the four (4) screws holding magnetron
to waveguide flange.
7. Remove magnetron with care so that magnetron
antenna is not hit by any metal object around antenna.
8. Remove the two (2) screws holding the magnetron
thermal cut-out angle to the magnetron.
9. Remove the magnetron thermal cut-out angle with
thermal cut-out (MG) from magnetron.
10.Now, the magnetron is free.