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R-671M  -  25

LATCH HOOK

Post

MONITOR SWITCH

STOP SWITCH

PRIMARY
(MONITORED)
LATCH SWITCH

Tab

Tab

Post

Tab

Post

1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/yellow

wire to the power angle.

3. Disconnect the leads of the power supply cord from the

noise filter, referring to the Figure C-4(a).

4. Release the power supply cord from the power angle.
5. Now, the power supply cord is free.

1. Insert the moulding cord stopper of power supply cord

into the square hole of the power angle, referring to the
Figure C-4(b).

2. Install the earth wire lead of power supply cord to the

power angle with one (1) screw and tight the screw.

3. Connect the brown and blue wire leads of power supply

cord to the noise filter correctly, referring to the Pictorial
Diagram.

1. CARRY OUT 3D CHECKS.
2. Remove the two (2) screws holding the two (2) termi-

nals of the main wire harness to the top heating
element.

3. Remove the two (2) screws holding the two (2) grill

heater angles to the top of the oven cavity.

4. Remove the two (2) grill heater angles from the oven

cavity.

5. Remove the top heating element from the top of the

oven cavity.

6. Now the top heating element is free.

POWER SUPPLY CORD

POWER ANGLE

GREEN / YELLOW
WIRE

BLUE WIRE

BROWN WIRE

NOISE FILTER

SCREW

L

TP

F 8 A

TL

RED

15 A

WHT

N

CHASSIS
SUPPORT

POWER
SUPPLY CORD

MOULDING
CORD STOPPER

POWER ANGLE

SQUARE HOLE

1. CARRY OUT 3D CHECKS.
2. Remove the turntable motor cover from the power

angle, referring to "TURNTABLE MOTOR REPLACE-
MENT".

3. Disconnect the wire leads from the bottom heating

element.

4. Remove the two (2) nuts holding the bottom heating

element to the oven cavity.

5. Remove the heater cover and the heater packing from

the bottom heating element.

6. Remove the bottom heating element from the oven

cavity .

1. CARRY OUT 3D CHECKS.
2. Remove the control panel assembly referring to "CON-

TROL PANEL ASSEMBLY REMOVAL".

3. Remove the open lever from the oven cavity front plate

by removing the control panel assembly.

4. Disconnect the leads from all switches.
5. Remove the one (1) screw holding the latch hook to the

oven cavity.

6. Remove the latch hook.
7. Remove the switch(es) from the latch hook by pushing

the retaining tab backwards slightly and turning the
switch(es) on the post.

8. Now the switch(es) is free.

R-671M  -  26

If the monitor latch switch,  stop switch and monitor switch
do not operate properly due to a mis-adjustment, the
following adjustment should be made.
1. CARRY OUT 3D CHECKS.
2. Loosen the one (1) screw holding the latch hook to the

oven cavity front flange.

3. 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
0.5 mm. The horizontal position of the latch hook
should be placed where the monitor switch has activated
with the door closed. The vertical position of the latch
hook should be placed where the monitor latch switch
and stop switch have activated with the door closed.

4. Secure the screws with washers firmly.
5. Make sure of the monitor latch switch, stop switch and

monitor switch operation. If those switches have not
activated with the door closed, one (1) screw holding
latch hook to oven cavity front flange and adjust the
latch hook position.

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

latched position. First check latch hook position, pushing
and pulling the door toward the oven face. The results
(play of the door) should be less than 0.5mm.

2. The contacts (COM-NO) of the primary latch switch

and stop switch  interrupt the circuit before the door can
be opened.

3. The contacts (COM-NC) of the monitor switch close

when the door is opened.

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

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

LATCH HOOK

STOP SWITCH
SW2

MONITORED
LATCH SWITCH
SW1

MONITOR SWITCH
SW3

LATCH
HEADS

OPEN LEVER

DOOR OPEN BUTTON

DOOR

1. CARRY OUT 3D CHECKS.
2. Push the open button and open the door slightly.
3. Insert an putty knife (thickness of about 0.5mm) into the

gap between the choke cover and door frame as shown
in Figure C-7 to free engaging parts.

4. Pry the choke cover by inserting a putty knife as shown

in Figure C-7.

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

11.Slide latch head upward and remove it from door frame

with releasing latch spring from door frame and latch
head.

12.Now, latch head and latch spring are free.
13.Remove the two (2) screws holding the glass stopper

to the door frame.

14.Remove the glass stopper from the door frame.
15.Slide the front door glass leftwards and then slide

upwards to release the tabs holding it.

16.Now, the front door glass is free

1. Re-install the front door glass to the door frame as

follows.

1) Insert the upper edge of the front door glass into the five

(5) tabs of the door frame.

2) Slide the front door glass downwards and insert the

lower edge of the front door glass into the five (5) tabs
of the door frame.

3) Slide the front door glass rightwards and insert the right

edge of the front door glass into the one (1) long tab of
the door frame.

2. Re-install the glass stopper o the door frame as follows.
1) Re-install the glass stopper to the door frame so that

the two (2) holes of the glass stopper meet the two (2)
pins of the door frame.

2) Hold the glass stopper to the door frame with the two

(2) screws.

3. Re-install the latch spring to the latch head. Re-install

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

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

upper and lower oven hinges by lifting up.

8. Now, door sub assembly is free from oven cavity.
9. Remove the four (4) screws holding the door panel to

the door frame.

10.Now, door panel is free.

CHOKE COVER

DOOR PANEL

PUTTY KNIFE

DOOR FRAME

PRIMARY

R-671M  -  27

4. Hold the door panel to the door frame with four (4)

screws.

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.

1. Door latch heads smoothly catch latch hook through

latch holes and that latch head goes through centre 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.)

PIN

PIN

LOWER
OVEN HINGE

UPPER
OVEN HINGE

LOWER
OVEN HINGE

CHOKE COVER

DOOR
PANEL

DOOR SUB 
ASSEMBLY

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 moisture,
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.

R-671M  -  28

After any repair, the microwve 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 275ml is
50 W/m

 (equivalent to 5mW/cm

) at a distance of

5cm from the oven.

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

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

±

 15ml of water, at an initial temperature of

20 

±

 2

°

C.

2. A leakage detector which has been calibrated

within the preceeding 12 months to a stand
whose accuracy can be traced to National
Physical Laboratory Standards.
Recommended instruments are:

Apollo "XI"
Celtec "A1000"

Before commencing the test, check 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

inthe 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 the
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 benn
completed, it should be replaced.

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

slowly (not faster than 2.5cm/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.