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R-290H(S)

Removal

1. Disconnect the oven from the power supply.
2. Remove the turntable and turntable support from the

oven cavity.

3. Turn the oven over.
4. Remove the one (1) screw holding the turntable motor

cover to the bottom plate.

5. Now, the turntable motor cover is free.
6. Disconnect the wire leads from the turntable motor.
7. Remove the single (1) screw holding the turntable

motor to the oven cavity.

8. Remove the turntable motor from the oven cavity.
9. Remove the TTM packing from the turntable motor.
10.Now, the turntable motor is free.

TURNTABLE MOTOR REMOVAL

Re-install

1. Re-install the TTM packing.
2. Re-install the turntable motor with theTTM packing

with the single (1) screw.

3. Re-connect the wire leads to the turntable motor.
4. Insert the tab of the turntable motor cover into the hole

of the bottom plate.

5. Re-install the turntable motor cover to the bottom plate

with one (1) screw.

Figure C-3. TTM packing Installation

Installation
1. Remove remaining adhesive on the control panel frame

surfaces with a soft cloth soaked in alcohol.

2. Tear the backing paper from the new membrane switch.
3. Insert the ribbon cable of the membrane switch into the

slit of the control panel frame.

4. Adjust the upper edge and right edge of the membrane

switch to the small depression on the surface of the
control panel frame.

5. Attach the membrane switch to the control panel frame

by rubbing with a soft cloth not to scratch.

6. Tear the backing paper from the new graphic sheet.
7. Adjust the upper edge and right edge of the graphic

sheet to the large depression on the surface of the
control panel frame.

8. Attach the graphic sheet to the control panel frame by

rubbing with a soft cloth not to scratch.

9. Tear the small backing paper from the ribbon cable of

the membrane switch.

10. Insert the two (2) holes of the ribbon cable into the two

(2) pins of the control panel frame (rear side).

11. Attach the ribbon cable to the control panel frame rear

side.

12. Place the edge of the membrane switch’s ribbon cable

on the lower portion of the liquid crystal display.

13. Insert the rubber connector into the long slit on the

control panel frame.

14. Reinstall the control unit to the control panel frame with

the three (3) screws.

NOTE:
Do not contact the conductor portion of the ribbon

cable (edge) and the rubber connector directly with
your fingers. This is to avoid oxidized.

Figure C-2. Graphic Sheet and Membrane Switch

Replacement

REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the magnetron from the waveguide. Refer to

chapter "MAGNETRON REMOVAL"

3. Disconnect the wire leads from the fan motor.
4. Release the wire leads from the hole of the fan duct.
5. Remove the three (3) screws holding the fan duct to the

oven cavity.

6. Release the fan motor assembly from the oven cavity.

COOLING FAN MOTOR REMOVAL

7. Remove the fan blade from the fan motor shaft accord-

ing to the following procedure.

8. Hold the edge of the rotor of the fan motor by using a

pair of groove joint pliers.

CAUTION:
• Make sure that any pieces do not enter the gap

between the rotor and the stator of the fan motor.
Because the rotor is easy to be shaven by pliers
and metal pieces may be produced.

TTM packing

Turntable motor

Rubber connector