2] outer case removal, 3] power transformer removal, Removal – Sharp Carousel R-305KS User Manual

Page 26: Reinstallation, 5] magnetron removal, 2] outer case removal -2, 4] high voltage components re, 5] magnetron, Removal -2, R305ks

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R305KS

11 – 2

[2] OUTER CASE REMOVAL

To remove the outer case, procedure as follows.

1. Disconnect the power supply cord.

2. Open the oven door and block it open.

3. Remove the two (2) screws from the lower portion of the rear

cabinet using a T20H Torx type or GTXH20-100 screw driver.

4. Remove the remaining three (3) screws from rear and one (1)

screw along the right side of outer case.

5. Slide the entire outer case back out about 1 inch (3 cm) to free

it from retaining clips on the cavity face plate.

6. Lift entire outer case from the unit.

CAUTION: DISCONNECT OVEN FROM POWER SUPPLY

BEFORE REMOVING OUTER CASE.

DISCHARGE THE HIGH VOLTAGE CAPACITOR
BEFORE TOUCHING ANY OVEN COMPONENTS OR
WIRING.

NOTE: When replacing the outer case, the 2 special Torx

screws must be reinstalled in the same locations.

[3] POWER TRANSFORMER REMOVAL

1. REMOVAL

1. Disconnect the power supply cord and remove outer case.

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect wire leads (primary) from power transformer and the fil-

ament leads and high voltage wire from the magnetron and capaci-
tor terminals.

5. Remove four (4) screws (two (2) screws from the upper side and

two (2) screws from bottom side) holding transformer to bottom
plate.

6. Remove transformer from bottom plate.

2. REINSTALLATION

1. Rest transformer on the bottom plate with its primary terminals

toward the oven face plate.

2. Secure transformer with four (4) screws (two (2) screws from the

upper side and two (2) screws from bottom side) to bottom plate.

3. Reconnect wire leads (primary) to power transformer and filament

leads and high voltage wire of transformer to magnetron and high
voltage capacitor. Refer to "PICTORIAL DIAGRAM".

4. Reinstall outer case and check that oven is operating properly.

[4] HIGH VOLTAGE COMPONENTS REMOVAL(HIGH VOLTAGE CAPACITOR AND HIGH VOLT-
AGE RECTIFIER ASSEMBLY)

To remove the components, proceed as follows.

1. Disconnect the power supply cord and remove outer case.

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the high voltage wire of the power transformer from the

high voltage capacitor.

5. Disconnect the high voltage wire of high voltage rectifier assembly

from the magnetron.

6. Disconnect the filament lead (short one) of the power transformer

from the high voltage capacitor.

7. Remove the one (1) screw holding capacitor holder to bottom plate.

8. Remove one (1) screw holding high voltage rectifier assembly to

capacitor holder.

9. Disconnect rectifier terminal from capacitor. High voltage rectifier

assembly is now free.

10.Remove capacitor holder. Capacitor is now free.

CAUTION: WHEN REPLACING HIGH VOLTAGE RECTIFIER AND

HIGH VOLTAGE CAPACITOR, GROUND SIDE TERMI-
NAL OF THE HIGH VOLTAGE RECTIFIER MUST BE
SECURED FIRMLY WITH A GROUNDING SCREW.

MAGNETRON REMOVAL

[5] MAGNETRON REMOVAL

1. REMOVAL

1. Disconnect the power supply cord and then remove outer case.

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect all wire leads from magnetron.

5. Remove the one (1) screw holding the chassis support to the mag-

netron.

6. Release the chassis support from the hole of the oven cavity front

flange.

7. Remove the two (2) screws holding air duct to magnetron and oven

cavity top plate.

8. Remove the air duct from oven.

9. Carefully remove the four (4) screws holding magnetron to

waveguide flange.

10.Remove magnetron with care so that magnetron antenna is not hit

by any metal object around antenna.

11. Now, the magnetron is free.

Special screw

Screw Driver

(Type: TORX T20 H or

GTXH20-100)

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