Sharp Carousel R-350F Manual de serviço - Página 21

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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 two (2) 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 four (4) screws holding chassis support to

oven cavity front plate, oven cavity rear plate, magnetron

and fan duct.

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. Remove the two (2) screws holding the magnetron

duct to the magnetron.

8. Remove the magnetron duct from the magnetron.

9. 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

MAGNETRON REMOVAL

POSITIVE LOCK

connector.

CONNECTORS

TERMINAL INSULATOR REPLACEMENT

Flat type

screw driver

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 duct to the magnetron with

the two (2) screws.

2. Re-install the magnetron to waveguide flange with the

four (4) screws.

3. Insert the two (2) tabs of the chassis support to the oven

cavity front plate and back plate.

4. Re-install the chassis support to oven cavity front

plate, oven cavity rear plate, magnetron and fan duct

with the four (4) screws.

5. Reconnect the wire leads to the magnetron. Refer to

"PICTORIAL DIAGRAM".

6. 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

Figure C-1. Positive lock

Installation

1. Insert the receptacle into terminal insulator.

2. Close covers of the terminal insulator, as shown

illustlated below.

Terminal

Positive lock®

connector

Push

Lever

Pull down

connector

Covers

Receptacle

R-350F