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31

The complete control panel should be removed for re-
placement of components. To remove the control panel,
proceed as follows:
1. CARRY OUT 3D CHECKS.
2. Remove the air intake filter assembly from the base

plate.

3. Remove two (2) screws holding the control panel to the

base plate.

4. Pull down the control panel and remove it forward.
5. Disconnect two connectors (A), (B), (H) and  TAB

terminal (TAB1,2,3,4) from the control unit.

6. Now the control panel assembly is free.

CAUTION FOR TOUCH CONTROL PANEL REMOVAL
1) Hold the lower end (Position A, Fig. 1) of the touch

control panel assembly firmly while sliding it down and
toward you.

2) If the Touch Control Panel is hard to remove;
(1) Insert a flat head screw driver into space  B . (Fig. 1)
(2) Rotate the screwdriver clockwise while holding posi-

tion  C of the Touch Control Panel. (Fig. 2)

(3) If the relay (RY-4 for R-22AT/24AT ; RY-3 for R-23AM)

is hit, re-solder the Relay (RY-4) prior to reinstalling the
Touch Control Panel.

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.

Installation
1. Insert the receptacle into terminal insulator.
2. Close covers of the terminal insulator, as shown

illustlated below.

B

A

C

B

Fig. 1

Fig. 2

TOUCH CONTROL PANEL

SCREW DRIVER

Flat type
screw driver

Terminal 
insulator

RECEPTACLE

COVERS

Replacement of individual component is as follows:

7. Remove two (2) screws holding the control panel

mounting angle to the panel frame.

8. Lift up the control panel mounting angle from the

panel frame.

9. Disconnect the connectors (J) and (E) from the

control unit.

10.Remove six (6) screws holding the control unit to the

panel frame assembly.

11.Push down the right side two (2) hooks fixing the

control unit to the panel frame assembly, and lift up
the control unit upward.

12.Now, the control unit and control panel frame (with

switch unit) are free.

13.Remove the three (3) screws holding the switch unit

(Main) to the control panel frame.

14.Remove the two (2) screws holding the  switch unit

(Sub.) to the control panel frame.

15.Now,  the switch unit is free

13.Remove the  one (1) screw holding the earth wire to

the rotary encoder.

14.Remove the two (2) screws and one (1) washer

holding the  rotary encoder to the control panel
frame.

15.Remove the knob from the rotary encoder shaft.
16.Now,  the rotary encoder is free.

32

NOTE:  1. Before attaching a new key unit, remove

remaining adhesive on the control panel
frame surfaces completely with a soft cloth
soaked in alcohol.

2. When attaching the key unit to the control

panel frame, adjust the upper edge and right
edge of the key unit to the correct position of
control panel frame.

3. Stick the key unit firmly to the control panel

frame by rubbing with soft cloth to prevent
scratching.

6. For 1st. latch and 2nd. latch switches removal

6-1. Disconnect the wire leads from the 1st latch and

2nd. latch switches.

6-2. Remove the single (1) screw and nut holding the

1st latch and 2nd. latch switches to the latch hook.

CAUTION: IF THE LATCH HOOK IS NEW, WHEN

THE 1ST LATCH SWITCH AND 2ND.
LATCH SWITCH ARE INSTALLED, THE
TWO (2) TABS OF THE LATCH HOOK
SHOULD BE BROKEN.

1. CARRY OUT 3D CHECKS
2. Release the cord bushing from the rear cabinet.
3. Disconnect the brown and blue wires of the power

supply cord from the noise filter.

4. Remove the single (1) screw holding the earth wire of

power supply cord.

5. Remove the power supply cord.
Re-install
1. Insert the power supply cord into the cord bushing.
2. Connect the brown and blue wires of power supply cord

into the terminals of noise filter, referring to pictorial
diagram.

3. Install the green/yellow wire of power supply cord with

the one (1) screw.

4. Re-install the cord bushing to the rear cabinet.

5. CARRY OUT 4R CHECKS.

1. CARRY OUT 3D CHECKS.
2. Remove the control panel from the oven cavity refer-

ring to “CONTROL PANEL REMOVAL”.

3. Remove the two (2) screws holding the latch hook to

the oven cavity.

4. Open the door and pull the latch hook out of the oven

cavity.

5. For 3rd. latch, stop or Monitor switch removal

5-1. Disconnect the wire leads from the switch.
5-2. Push the retaining tabs outward slightly and then

pull the switch forwards and remove it from the
latch hook.

7. Remove three (3) screws holding the control panel

mounting angle to the panel frame.

8. Lift up the control panel mounting angle from the

panel frame.

9. Disconnect connector (G) from the control unit by

pushing the hooks of cable holder inwardly.

10.Remove six (6) screws holding the control unit to the

panel frame assembly.

11.Push down the right side two (2) hooks fixing the

control unit to the panel frame assembly, and lift up
the control unit upward.

12.Now, the control unit and control panel frame (with

key) are free.

In case 1st latch switch, 2nd latch, stop switch, 3rd latch
switch and monitor switch do not operate properly due to

a mis-adjustment, the following adjustment should be
made.

Power supply cord

Power supply cord

Cord bushing

Screw

Green/Yellow
wire

Brown wire

Brown wire

Chassis support

Blue wire

Noise filter angle

Noise filter angle

Noise filter 

Noise filter

Blue wire

33

1. Loosen the two (2) screws holding the latch hook.
2. With the door closed, adjust the latch hook by moving

it back and forward, or up and down. In and out play of
the door allowed by the latch hook should be less than
0.5mm. The vertical position of the latch hook should
be placed where the stop switch and 1st, 2nd, 3rd latch
switches have activated with the door closed.
The horizontal position of the latch hook should be
placed where the monitor switch has activated with the
door closed.

3. Secure the screws with washers firmly.
4. Make sure of the 1st, 2nd, 3rd latch switches, stop

switch, and monitor switch operation. If those switches
have not activated with the door closed, loose two (2)
screws holding latch hook and adjust the latch hook
position.

1. In and out play of door remains less than 0.5mm when

in the latched position.

2. The stop switch and 1st, 2nd, 3rd latch switches

interrupt the circuit before the door open when the door
release lever is pulled, and then and monitor switch
close the circuit when the door is opened.

3. Re-install outer case and check for microwave leakage

around the door with an approved microwave survey
meter. (Refer to Microwave Measurement Procedure.)

1. Loosen upper and lower oven hinges with phillips head

screw driver.

2. Adjust the door by moving it vertically so that the top

right hand corner of the door is in line with the top of the
control panel frame assembly.

3. Tighten the upper and lower oven hinge screws.

REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the two (2) screws holding each of the upper

and lower oven hinges to the oven cavity.

3. Remove door assembly with upper and lower oven

hinges by pulling it forward.

4. Release upper and lower oven hinges from door as-

sembly.

5. Now, door assembly is free.

NOTE: When individual parts are replaced, refer to "Door

Disassembly".

RE-INSTALL
1. Insert the upper and lower oven hinges into door hinge

pins.

2. Insert the upper and lower oven hinges with door

assembly into rectangular holes of oven cavity front
plate.

3. Make sure that the door is parallel with oven face lines

(left and upper side line) and door latch heads pass
through the latch holes correctly.

4. Fasten upper and lower oven hinges firmly to oven

cavity with two (2) screws on each hinge.

DOOR ADJUSTMENT
When removing and/or loosening hinges such as in door
replacement, the following adjustment criteria are taken.
Door adjustment is performed with the door properly
installed and closed and while the oven hinges are loose.

OUTER CASE
CABINET 

UPPER
OVEN HINGE

LOWER
OVEN HINGE

LATCH
HEADS

After adjustment, make sure of the following:
1. Door latch heads smoothly catch the latch hook through

the latch holes, and the latch head goes through the
center of the latch hole.

2. Deviation of the door alignment from horizontal line of

cavity face plate is to be less than 1.0mm.

3. The door is positioned with its face depressed toward

the cavity face plate.

4. Re-install outer case and check for microwave leakage

Latch head

SW4: Monitor switch

Latch hook

SW1: 1st. latch switch

SW2: 2nd. latch switch

SW5: Stop switch

SW3: 3rd. latch switch

Latch head

Joint lever

Door release
lever

Head lever

34

around door with an approved microwave survey me-
ter.  (Refer to Microwave Measurement Procedure.)

Note:

The door on a microwave oven is designed to act
as an electronic seal preventing the leakage of
microwave energy from oven cavity during cook
cycle. This function does not require that door be
air-tight, moisture (condensation)-tight or light-
tight. Therefore, occasional appearance of mois-

ture, light or sensing of gentle warm air movement
around oven door is not abnormal and do not of
themselves, indicate a leakage of microwave en-
ergy from oven cavity. If such were the case, your
oven could not be equipped with a vent, the very
purpose of which is to exhaust the vapor-laden air
from the oven cavity.

1. Open the door and insert a putty knife (thickness of

about 0.5mm) in gap between the choke cover and
corner portion of door panel to free engaging parts.
Refer to Fig. C-7.

NOTE: As the choke cover and door panel are engage at

16 places, do not force any perticular part.

2. Remove the choke cover carefully. (If choke cover is

broken, replace with a new one.)

UPPER AND LOWER OVEN HINGES REMOVAL
1. Remove the door assembly from oven cavity, referring

to "REMOVAL" of "DOOR REPLACEMENT AND AD-
JUSTMENT".

2. Remove choke cover, referring to "CHOKE COVER

REMOVAL".

3. Release the oven hinges from the door panel.
4. Now, the oven hinges are free.

DOOR HANDLE REMOVAL
1. Remove the door assembly from oven cavity, "RE-

MOVAL" of "DOOR REPLACEMENT AND ADJUST-

UPPER 
OVEN HINGE

LOWER 
OVEN HINGE

CHOKE COVER

DOOR 
HANDLE

LATCH HEAD

BENT

2

1

PUTTY KNIFE

PUTTY KNIFE

CHOKE COVER

DOOR PANEL

FRONT

BENT

MENT".

2. Place door assembly on a soft cloth with latches facing

up.

3. Remove choke cover from door panel, referring to

"CHOKE COVER REMOVAL".

4.  Remove two (2) screws holding the door handle to

door.

5. Remove the door handle from door panel.
6. Now, door handle is free.

UPPER AND LOWER LATCH HEADS REMOVAL
7. Remove the door release lever from the door assem-

bly.

8. Remove the three (3) screws holding the joint plate to

the door panel.

9. Release the latch spring from the tab of the joint lever

and joint plate.

10.Release the latch heads from joint lever and joint plate.
11.Now, the latch heads are free.

DOOR CASE REMOVAL
1. Remove the door assembly from oven cavity, referring

to "REMOVAL" of "DOOR REPLACEMENT AND AD-
JUSTMENT".

2. Remove choke cover from door panel, referring to

"CHOKE COVER REMOVAL".

3. Remove door handle from door panel, referring to

"DOOR HANDLE REMOVAL".

4. Bend up four (4) nails of door case.
5. Remove door case from door panel.
6. Now, the door case is free.

DOOR GLASS REMOVAL
7. Remove the four (4) screws holding two (2) outside

window fixing plates to door panel.

8. Now, the door glass is free.