Sharp Carousel R-350C Service Manual page 21

HIGH VOLTAGE RECTIFIER, HIGH VOLTAGE FUSE AND HIGH VOLTAGE CAPACITOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect the brown and blue wires of power supply
cord from the noise filter.
3. Disconnect the wire leads of the main wire harness
from the noise filter.
4. Disconnect the high voltage fuse from the power
transformer.
5. Disconnect filament lead of the power transformer from
the high voltage capacitor.
6. Disconnect high voltage wire of the high voltage rectifier
assembly from the magnetron.
7. Remove one (1) screw holding capacitor holder to the
oven cavity rear plate.
Removal
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from magnetron.
3. Remove the three (3) screws holding chassis support
to oven cavity front plate, oven cavity rear plate and
magnetron.
4. Remove the chassis support from oven.
5. Carefully remove the four (4) screws holding magnetron
to waveguide flange.
6. Lift up magnetron with care so that magnetron antenna
is not hit by any metal object around antenna.
7. Now, the magnetron is free.
1. CARRY OUT 3D CHECKS.
2. Pushing the lever of positive lock
3. Pull out the positive lock
CAUTION: WHEN YOU (SERVICE ENGINEERS) CON-
NECT THE POSITIVE LOCK
TO THE TERMINALS, CONNECT THE POSI-
TIVE LOCK ® SO THAT THE LEVER FACE
YOU (SERVICE ENGINEERS).
1. Open covers of the terminal insulator by using small flat
type screw driver.
2. Remove the receptacle from the terminal insulator.
3. Now, the terminal insulator is free.
Terminal
insulator
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from panel components.
MAGNETRON REMOVAL
®
POSITIVE LOCK
® connector.
® connector.
® CONNECTORS
TERMINAL INSULATOR REPLACEMENT
Flat type
screw driver
CONTROL PANEL ASSEMBLY REMOVAL
8. Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
9. Disconnect rectifier terminal from capacitor.
Now, the high voltage rectifier assembly is free.
10.Disconnect high voltage fuse from capacitor.
Now, the high voltage fuse is free.
11.Remove the high voltage capacitor from the capacitor
holder. Now, the high voltage capacitor is 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.
Re-install
1. Re-install the magnetron to waveguide flange with the
four (4) screws.
2. Insert the two (2) tabs of the chassis support to the oven
cavity front plate and back plate.
3. Re-install the chassis support to oven cavity front
plate, oven cavity rear plate and magnetron with the
three (3) screws.
4. Reconnect the wire leads to the magnetron. Refer to
"PICTORIAL DIAGRAM".
5. Re-install outer case and check that the oven is
operating properly.
CAUTION: WHEN REPLACING MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND
MOUNTING SCREWS ARE TIGHTENED
SECURELY.
CONNECTOR REMOVAL
Positive lock
connector
Figure C-1. Positive lock
Installation
1. Insert the receptacle into terminal insulator.
2. Close covers of the terminal insulator, as shown
illustlated below.
COVERS
3. Make one (1) tab of the oven cavity front plate straight
holding the control panel assembly to the oven flange.
19
Terminal
®
1
Push
Lever
2
Pull down
®
connector
RECEPTACLE
R-350C