Sharp Carousel II R-3A54 Manuel d'entretien - Page 22

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R -3A54

R-3E54

COMPONENT

REPLACEMENT

AND ADJUSTMiENT

PROCEDURE

Avoid

possible

exposure

to microwave

energy.

Please

the

before

operating

the oven.

1. CARRY OUT 3D CHECKS.

2. Make sure that a definite

"click"

can be heard when

the microwave

oven door is unlatched.

(Hold

the

door in a closed position

with one hand, then push

the door open button

with the other, this causes the

latch

heads to rise., it is then

possible

to hear a

"click"

as the door switches

operate.)

3. Visually

check the door and cavity

face plate for

damage (dents, cracks, signs of arcing etc.).

2. Door hinge, support

or latch hook is damaged.

3. The door gasket or seal is damaged.

4. The door is bent or warped.

5. There are defective

parts in the door interlock

sys-

tem.

6. There are defective

parts in the microwave

generat-

ing and transmission

assembly.

7. There is visible

damage to the oven.

Carry' out any remedial

work that is necessary

before

Do not operate the oven:

operating

the oven.

1. Without

the RF gasket (Magnetron).

Do not operate the oven if any of the following

con-

2. If the wave guide or oven cavity are not intact.

ditions

exist;

3. if the door is not closed.

1. Door does not close firmly.

4. if the outer case (cabinet)

is not fitted.

Please refer to 'OVEN PARTS, CABINET

PARTS, DOOR PARTS', when

carrying

out any of the following

removal

procedures:

(RDAOOOl

OUTER

CASE

REMOVAL

To remove the outer case, proceed as follows.

6. Discharge

the H.V. capacitor

before carring

out any

1. Disconnect

oven from power supply.

further work.

2. Open the oven door and wedge

it open.

7. Do not operate

the oven with

the outer case re-

3. Remove the screws

from rear and along

the side

moved.

edge of case.

N.B.; Step I,2 and 6 form the basis of the 3D checks.

4. Slide the entire case .back about

1 inch

(3cm)

CAUTION:

DISCHARGE

HIGH

VOLTAGE

free it from retaining

clips on the cavity face plate.

CAPACITOR

BEFORE TOUCHING

ANY

5. Lift the entire case from the oven.

OVEN COMPONENTS

OR WIRING.

HIGH

VOLTAGE

COMPONENTS

REMOVAL

(HIGH

VOLTAGE

CAPACITOR

AND

HIGH

VOLTAGE

RECTIFIER

ASSEMBLY)

1. CARRY OUT 30 CHECKS.

2. Disconnect

the H.V. wire A with

the filament

lead

of the

power

transformer

from

the

high

voltage

capacitor.

3. Disconnect

the H.V. wire

of the H.V. rectifier

as-

sembly from the power transformer.

4. Remove the single(l)

screw holding

the capacitor

holder to the back plate of the oven cavity.

5. Remove the single(l)

screw holding

the earth side

terminal

of the high voltage rectifier assembly to the

capacitor

holder.

6. Disconnect

the H.V. rectifier assembly from the high

voltage

capacitor.

7. Now,

high

voltage

capacitor

and H.V. rectifier

are

free.

CAUT!ON:

WHEN

REPLACING

HIGH

VOLTAGE

RECTIFIER

ASSEMBLY,

ENSURE THAT

THE CATHODE

(EARTH)

CONNECTION

SECURELY

FIXED

THE

CAPACITOR

HOLDER

WITH

EARTHING

SCREW.

POWER

TRANSFORMER

REMOVAL

1. CARRY OUT 30 CHECKS

2. Disconnect

the main harness from the power trans-

former

3. Disconnect

the H.V. wire

of the H.V. rectifier

as-

sembly from the power transformer.

4. Disconnect

the filament

lead of the power transfor-

mer from the H.V. wire A.

5. Disconnect

the filament

lead of the power transfor-

mer from the magnetron.

6. Remove

the

four(4)

screws

holding

the

power

transformer

to the bottom

plate.

7. Remove the trans cushion

from the power transfor-

mer.

8. Remove

the

power

transformer

from

the

bottom

plate.

Now, it is free.