R-464 (serv.man4). Control panel, component replacement and adjustment procedure - Sharp Home Appliance Service Manual (repair manual). Page 6

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R-464(SL)
18
9. Remove the two (2) screws holding the waveguide
flange of the oven cavity to the base plate.
10.Remove the three (3) screws holding the base plate to
the oven cavity front plate.
11.Remove the three (3) screws holding the base plate to
the oven cavity back plate.
12.Lift up the oven cavity assembly and remove it from the
base plate.
13.Now the high voltage transformer, high voltage
capacitor, high voltage rectifier, high voltage fuse and
fan motor can be found on the base plate.
14.The magnetron can be found at wavegide flange of the
oven cavity.
15. 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 flange of the oven cavity to the
base plate with two (2) screws.
7. Reinstall the front cover to the oven cavity front plate.
8. Hold the front cover to the base plate with two (2)
screws.
9. Insert the two (2) snap bands of main wire harness to
the two (2) holes of oven cavity.
10. Reconnect the wire leads to the magnetron, all switches,
thermal cut-out (MG.), thermal cut-out (oven.), oven
lamp and turntable motor. Refer to the "PICTORIAL
DIAGRAM".
11. Reinstall the power supply cord to the oven cavity,
referring to "POWER SUPPLY CORD
REPLACEMENT".
12. If the door has been removed, reinstall the door to the
oven cavity. Refer to "DOOR REPLACEMENT".
13. Now, the oven cavity assembly should be reinstalled.
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Disconnect the wire leads (primary and high voltage
fuse) from high voltage transformer and the filament
leads from the magnetron and capacitor terminals.
5. Remove four (4) screws holding transformer to base
plate.
6. Remove transformer from base plate.
HIGH VOLTAGE 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 fuse)
to high voltage 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 VOLATEGE FUSE AND HIGH VOLTAGE CAPACITOR
REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Disconnect the high voltage fuse from the high voltage
capacitor and the high voltage transformer.
5. Now the high voltage fuse is free.
6. Disconnect the filament lead (short one) of the power
transformer from the high voltage capacitor.
7. Remove one (1) screw holding capacitor holder to
base plate.
8. Remove  one (1) screw holding high voltage rectifier
assembly to capacitor holder.
9. Disconnect rectifier terminal from the capacitor.
High voltage rectifier assembly is now free.
10.Remove the capacitor holder. The capacitor is now
free.
CAUTION: WHEN REPLACING HIGH VOLTAGE REC-
TIFIER AND HIGH VOLTAGE CAPACITOR,
EARTH SIDE TERMINAL OF THE HIGH
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A EARTHING SCREW.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Now, the wire leads should be disconnected from the
magnetron and thermal cut-out (MG).
5. Carefully remove the four (4) screws holding magnetron
to waveguide flange.
6. Remove magnetron with care so that magnetron
MAGNETRON REMOVAL
antenna is not hit by any metal object around  antenna.
7. Remove the two (2) screws holding the magnetron
duct assembly to the magnetron.
8. Remove the magnetron duct assembly with thermal
cut-out (MG) from magnetron.
9. Now, the magnetron is free.
Reinstallation
1. Re-install the magnetron thermal duct assembly with
thermal cut-out (MG) to magnetron with the two (2)
screws.
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