Sharp R-211A, Service Manual

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14
R-211A
CAUTION: WHEN REPLACING THE MAGNETRON,
BE SURE THE R.F. GASKET IS IN PLACE
AND THE MAGNETRON MOUNTING
SCREWS ARE TIGHTENED SECURELY.
MAGNETRON REPLACEMENT
Removal
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from the magnetron.
3. Carefully remove the two (2) screws holding the mag-
netron to the waveguide flange.
4. Lift up magnetron with care so that the magnetron
antenna is not hit by any metal object around antenna.
5. Now, the magnetron is free.
Re-install
1. Re-install the magnetron to the waveguide flange with
two (2) screws diagonally as shown in Figure C-1.
2. Re-connect the wire leads to the magnetron. Refer to
"PICTORIAL DIAGRAM".
3. Re-install the outer case and check that the oven is
operating properly.
Figure C-1. Magnetron Replacement
Screws
Magnetron
Wavegiude
Flange
OVEN LAMP SOCKET REMOVAL
POSITIVE LOCK ® CONNECTOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Pushing the lever of positive lock
®
connector.
3. Pull out the positive lock ® connector.
CAUTION:
When you (Service engineers) connect the positive lock
®
connectors to the terminals, connect the positive lock ® so
that the lever face you (Service engineers).
1. CARRY OUT 3D CHECKS
2. Pull the wire leads from the oven lamp socket by
pushing the terminal hole of the oven lamp socket
with the flat type small screw driver.
3. Tear the cushion from the light mount plate.
4. Bend the tab of the light mount plate holding the oven.
5. Lift up the oven lamp socket.
6. Now, the oven lamp socket is free.
Figure C-2. Oven lamp socket
POWER SUPPLY CORD REPLACEMENT
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the single (1) screw holding the green/yellow
wire to the oven cavity.
3. Disconnect the brown wire of the power supply cord
from the fuse holder.
4. Cut away the connector (CE-230).
5. Release the moulding cord stopper of the power supply
cord from the square hole of the oven cavity back plate,
referring to the Figure C-4 (b).
6. Now, the power supply cord is free.
Re-install
1. Insert the moulding cord stopper of power supply cord
into the square hole of the rear cabinet, referring to the
Figure C-4 (b).
2. Install the earth wire lead of power supply cord to the
oven cavity with one (1) screw and tight the screw.
3. Connect the brown wire of the power supply cord to the
fuse holder correctly, referring to the Pictorial Diagram.
4. Make sure that the blue wire lead of main wire harness
and white wire lead of the power supply cord are
stripped 15mm length from its end .
5. Wind the conductor of the blue and white wires each
other.
6. Insert them into the connector (CE-230). And clamp it.
Oven lamp
socket
Terminal
Wire lead
Terminal hole
Flate type small
screw driver
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector
Figure C-3 Positive lock ® connector