Magnetron Removal; High Voltage Rectifier And High Voltage Capacitor Removal - Sharp R-1880LS Service Manual

R-1880LS/LST
10. Now, the hood fan motor is free.
11. Remove the hood exhaust duct from the oven cavity by
lifting it up
1. Screw the oven lamp off from the lamp socket.
13. Remove the lamp socket from the lamp angle of the top duct
by releasing the two () tabs of the oven lamp socket.
14. Pull the wire leads from the oven lamp socket by pushing the
terminal hole of the oven lamp socket with the small flat type
screw driver.
15. Now, the oven lamp socket is free.
16. Release the one (1) snap band of the AH sensor assembly from
the oven cavity.
17. Release the one (1) tab of the top duct from the AH sensor
assembly.
1. Disconnect the power supply cord, remove the oven from wall,
remove outer case, remove the unit mounting screw and hood
intake duct R. (Refer to procedure of "Removal of Oven from
Wall", "Outer case Removal" and "Unit Mounting Screw and
Hood Intake Duct R Removal".)
. Open the door block it open.
3. Discharge high voltage capacitor.
4. Remove the hood fan motor and the hood exhaust duct from
the oven cavity, referring to the procedure of "HOOD FAN
MOTOR, HOOD EXHAUST DUCT, OVEN LAMP SOCKET
AND AH SENSOR REMOVAL".
5. Disconnect the high voltage wire leads of the high voltage
rectifier assembly from the magnetron.

HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL

1. Disconnect the power supply cord, remove the oven from wall,
remove outer case, remove the unit mounting screw and hood
intake duct R. (Refer to procedure of "Removal of Oven from
Wall", "Outer case Removal" and "Unit Mounting Screw and
Hood Intake Duct R Removal".)
. Open the door block it open.
3. Discharge high voltage capacitor.
4. Disconnect the high voltage wire leads with high voltage
rectifier from the magnetron.
5. Disconnect filament lead of the transformer from high voltage
capacitor.
6. Disconnect high voltage wire lead of capacitor from the
transformer.
1. Disconnect the power cord, remove the oven from wall and
remove outer case. (Refer to procedure of "Removal of Oven
from Wall" and "Outer case Removal")
. Open the door and block it open.
3. Discharge high voltage capacitor.
1. Disconnect the power supply cord, remove the oven from wall
and remove outer case. (Refer to procedure of "Removal of
Oven from Wall" and "Outer case Removal")
. Open the door and block it open.
3. Discharge the high voltage capacitor.
4. Remove the hood fan motor and the hood exhaust duct from
the oven cavity, referring to the procedure of "

MAGNETRON REMOVAL

HOOD FAN THERMAL CUT-OUT REMOVAL
TEMPERATURE FUSE (MAGNETRON) REMOVAL
18. Remove two () screws holding the AH sensor assembly to
the exhaust duct.
19. Now, the AH sensor assembly and the exhaust duct are free.
Terminal
Wire lead
6. Disconnect the filament lead of the transformer from the
magnetron.
7. Carefully remove the four (4) mounting screws holding the
magnetron to waveguide. When removing the screws hold the
magnetron to prevent it from falling.
8. Remove the magnetron from the unit with care so the magnetron
tube should not hit by any metal object around the tube.
CAUTION: WHEN REPLACING THE MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND
MOUNTING SCREWS ARE TIGHTENED SE-
CURELY.
7. Remove one (1) screw holding capacitor holder to the back
plate.
8. Remove one (1) screw holding high voltage rectifier from the
capacitor holder.
9. Disconnect the high voltage rectifier assembly from the high
voltage capacitor.
10. Now, the high voltage rectifier assembly is free.
11. Remove capacitor from the holder.
1. Now, the high voltage capacitor is free.
CAUTION: WHEN REPLACING THE HIGH VOLTAGE
RECTIFIER ASSEMBLY, THE GROUND SIDE
TERMINAL MUST BE SECURED FIRMLY W ITH
A GROUNDING SCREW.
4. Disconnect the wire leads from the hood fan thermal cut-
out.
5. Remove the hood fan thermal cut-out from the base plate
right.
6. Now, the hood fan thermal cut-out is free.
5. Disconnect the wire leads from the temperature fuse
(Magnetron).
6. Remove the one (1) screw holding the temperature fuse
(Magnetron) to the oven cavity.
7. Now, the temperature fuse (Magnetron) is free.
4
Oven lamp
socket
Terminal hole
Flate type small
screw driver