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19

REMOVAL
1. Disconnect the oven from the power supply.
2. Open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the

gap between the choke cover and corner portion of
door panel as shown in Figure C-5 to free engaging
parts.

4. Pry the choke cover by inserting a putty knife in order

shown in figure C-5.

5. Release choke cover  from door panel.
6. Now choke cover is free.

7. Release two (2) pins of door panel from two (2) holes

of upper and lower oven hinges by lifting up.

8. Now, door panel is free from oven cavity.
9. Release door panel from ten (10) tabs of door frame

and remove door frame by sliding the door panel
downward.

10.Now, door panel with sealer film is free.
11.Tear sealer film from door panel.
12.Now, door panel is free.
13.Slide latch head upward and remove it from door frame

with releasing latch spring from door frame and latch
head.

14.Now, latch head and latch spring are free.
15.Remove door screen from door frame.
16.Now, door screen is free.

RE-INSTALL
1. Re-install door screen to door frame.
2. Re-install latch spring to the head. Re-install latch

spring to the door frame. Re-install latch head to the
door frame.

3. Re-install door panel to door frame by fitting ten (10)

tabs of door frame to ten (10) holes of door panel.

4. Put sealer film on door panel. Refer to "Sealer Film"

and figure C-7, on how to handle the new film.

After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when

in the latched position. First check upper position of
latch hook, pushing and pulling upper portion of door
toward the oven face. Then check lower portion of the
latch hook, pushing and pulling lower portion of the
door toward the oven face. Both results (play in the

5. Catch two (2) pins of door panel on two (2) hole of upper

and lower oven hinges.

6. Re-install choke cover  to door panel by pushing.
Note: After any service to the door;
(A) Make sure that monitored latch switch, latch switch

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

latch holes and that latch head goes through center of
latch hole.

2. Deviation of door alignment from horizontal line of

cavity face plate is to be less than 1.0mm.

3. Door is positioned with its face pressed toward cavity

face plate.

4. Check for microwave leakage around door with an

approved microwave survey meter.  (Refer to Micro-
wave 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.

door) should be less than 0.5mm.

2. The monitored latch switch, latch switch interrupt the

circuit before the door can be opened.

3. Monitor switch contacts close when door is opened.
4. Re-install outer case and check for microwave leakage

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

10

5

4

8

7

9

11

3

2

1

Choke Cover

Door Frame

Putty Knife

6

Pin

Pin

Upper Oven Hinge

Lower 
Oven
Hinge

Lower Oven
Hinge

Choke Cover

Slit Choke

Door
Panel

20

After any repair, the microwave oven must be checked for
microwave leakage to ensure continued safe operation.
BS EN 60335-2-25 specifies that the maximum permitted
leakage with a load of 275 ml is 50 W/m

2 

(equivalent to 5

mW/cm

2

)

 

at  a distance of 5 cm from the oven.

The following items are required to carry out this test:-
1.  A low form of 600 ml beaker made from an electrically

non-conductive material, such as glass or plastic, with
an inside diameter of approximately 8.5 cm. This must
contain 275 

± 15 ml of water, at an initial temperature

of 20 

± 2˚C.

2. A leakage detector which has been calibrated within

the preceding 12 months to a stand whose accuracy
can be traced to National Physical Laboratory Stand-
ards.

Recommended instruments are:

Apollo "XI"
Celtec "A100"

Before commencing the test, check that the leakage
detector is functioning and adjusted according to the
manufacturer's instructions, and any spacers are fitted to
ensure that measurement is taken 5cm from the surface of
the oven.

1. Place the beaker containing the water load in the oven

cavity at the centre of the turntable. The placing of this
standard load in the oven is important, not only to
protect the oven, but also to ensure that any leakage it
is not disguised by too large a load absorbing energy.

2. Close the oven door, and with the power level set to

FULL, turn the oven ON with the timer set for a few
minutes operation. Should the water begin to boil
before the test has been completed, it should be
replaced.

3. As shown in the diagram below, move the probe slowly

(not faster than 2.5 cm/sec.);-

a) around the edge of the door following the gap
b) across the face of the door
c) across any vents in the oven's sides, rear or top

Dotted line indicates the path taken by the leakage detector.

Sealer film

Backing film

Adhesive tape

Installation
1. Put the adhesive tape on the backing film of the sealer

film as shown in Fig. C-7.

2. Tear the backing film by pulling the adhesive tape.
3. Put the pasted side of the sealer film on the door panel

21

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.

NOTE: " " indicates components with potential above 250V.

MAGNETRON

 H.V. RECTIFIER

CAPACITOR

0.91

µ

F

AC2100V

TURNTABLE MOTOR

FAN MOTOR

COM.

COM.

COM.

N.O.

N.O.

N.O.

OVEN LAMP

MONITOR SWITCH

CONTROL UNIT

RY1

D72

D70

D71

OL

FM

TIMER MOTOR

LATCH SWITCH

MONITORED
LATCH 
SWITCH

TIMER

SWITCH

TM

TTM

EARTH

230 - 240V

 

˜ 

50Hz 

BLU

BRN

LIVE

NEUTRAL

G-Y

N

L

LINE CROSS CAPACITOR

0.068

µ

/AC250V 

NOISE SUPPRESSION COIL 

LINE BYPASS

CAPACITOR

0.0022

µ

/AC250V

LINE BYPASS

CAPACITOR

0.0022

µ

/AC250V

NOISE FILTER

H.V. FUSE

0.6A

TEMPERATURE
FUSE (OVEN)

A1

A3

FUSE
T6.3A

HIGH VOLTAGE

TRANSFORMER

WITH THERMAL

CUT-OUT 150˚C

MAGNETRON

 H.V. RECTIFIER

CAPACITOR

0.91

µ

F

AC2100V

TURNTABLE MOTOR

FAN MOTOR

COM.

COM.

COM.

N.O.

N.O.

N.O.

OVEN LAMP

MONITOR SWITCH

CONTROL UNIT

RY1

D72

D70

D71

OL

FM

TIMER MOTOR

LATCH SWITCH

MONITORED
LATCH 
SWITCH

TIMER

SWITCH

TM

TTM

EARTH

230 - 240V

 

˜ 

50Hz 

BLU

BRN

LIVE

NEUTRAL

G-Y

N

L

LINE CROSS CAPACITOR

0.068

µ

/AC250V 

NOISE SUPPRESSION COIL 

LINE BYPASS

CAPACITOR

0.0022

µ

/AC250V

LINE BYPASS

CAPACITOR

0.0022

µ

/AC250V

NOISE FILTER

H.V. FUSE

0.6A

TEMPERATURE
FUSE (OVEN)

A1

A3

FUSE
T6.3A

HIGH VOLTAGE

TRANSFORMER

WITH THERMAL

CUT-OUT 150˚C

22

WHT

WHT

RED

HIGH VOLTAGE COMPONENTS

MAGNETRON

HIGH 

VOLTAGE

CAPACITOR

RECTIFIER

MONITOR 

SWITCH

TURNTABLE

MOTOR

FAN MOTOR

RED

MONITORED

LATCH 

SWITCH

COM.

COM.

ORG

N

RED

WHT

L

BLK

RED

N.C.

N.O.

GRY

BLU

RED

ORG

LATCH

SWITCH

GRY

HIGH VOLTAGE 

TRANSFORMER

HIGH VOLTAGE

FUSE

G/Y

B

L

U

B

R

N

EARTH

LIVE

NEUTRAL

POWER SUPPLY CORD

NOISE

FILTER

OVEN CAVITY

BACK PLATE

WHT

WHT 

WHT

WHT

WHT 

GRY

ORG

RED

ORG

GRY

CN-A

2

BLK

ORG

RED

RED

BLK

RED

1

3

COM.

ORG

BLK

N.O.

OVEN LAMP

TEMPERATURE

FUSE (OVEN)

TIMER MOTOR

COM.

N.O.

GRY

GRY

CONTROL UNIT

1

3

1

2

3

4

CN-A

RY1

WHT

BLU

GRY

GRY