Sharp R-210A, Service Manual

R-210A

14

HIGH VOLTAGE COMPONENTS REMOVAL

(HIGH VOLTAGE CAPACITOR, HIGH VOLTAGE RECTIFIER ASSEMBLY AND H.V. FUSE)

To remove the components, proceed as follows.
1. CARRY OUT 3D CHECKS.
2. Disconnect the H.V. fuse from the power transformer.
3. Disconnect the H.V. wire of the H.V. rectifier assembly

from the magnetron.

4. Disconnect the wire leads from the noise filter.
5. Remove one (1) screw holding capacitor holder to

oven cavity back plate.

6. Disconnect the filament lead of the power transformer

from the H.V. capacitor.

7. Remove one (1) screw holding earth side terminal of high

voltage rectifier assembly, and remove capacitor holder.

8. Disconnect all the leads and terminals of high voltage

rectifier assembly from high voltage capacitor.

9. Disconnect the H.V. fuse from high voltage capacitor.
10.Remove the HVC cover from the high voltage capacitor.
11.Now H.V. rectifier assembly, H.V. fuse and H.V. ca-

pacitor should be free.

CAUTION: WHEN REPLACING HIGH VOLTAGE REC-

TIFIER ASSEMBLY, ENSURE THAT THE
CATHODE (EARTH) CONNECTION IS SE-
CURELY FIXED TO THE CAPACITOR
HOLDER WITH AN EARTHING SCREW.

CAUTION: DO NOT REPLACE ONLY HIGH VOLTAGE

RECTIFIER. WHEN REPLACING IT, RE-
PLACE HIGH VOLTAGE RECTIFIER AS-
SEMBLY.

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.

OVEN LAMP SOCKET REMOVAL

Figure C-2. Oven lamp socket

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) CON-

NECT THE POSITIVE LOCK

®

 CONNEC-

TORS TO THE TERMINALS, CONNECT
THE POSITIVE LOCK

®

 SO THAT THE LE-

VER FACE YOU (SERVICE ENGINEERS).

Terminal

Push

Pull down

1

2

Lever

Positive lock®

connector

Figure C-3 Positive lock

®

 connector

Removal
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from the magnetron.
3. Carefully remove the two (2) screws holding the

magnetron 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.

CAUTION: WHEN REPLACING THE MAGNETRON,

BE SURE THE R.F. GASKET IS IN PLACE
AND THE MAGNETRON MOUNTING
SCREWS ARE TIGHTENED SECURELY.

MAGNETRON REPLACEMENT

Figure C-1. Magnetron Replacement

Screws

Magnetron

Wavegiude 
Flange

Oven lamp
socket

Terminal

Wire lead

Terminal hole

Flate type small
screw driver