R-884 (serv.man3) - Sharp Home Appliance Service Manual (repair manual). Page 29

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R-884M - 29
REMOVAL
1. Disconnect the oven from the power supply.
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. Release choke cover  from door panel.
5. Now choke cover is free.
DOOR REPLACEMENT
  COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
Figure C-7. Door Disassembly
6. Lift the door upwards.
7. Now, door sub assembly is free from oven cavity.
8. Remove the four (4) screws holding the door panel to
the door frame.
9. Release door panel from six (6) tabs of door frame by
sliding door panel upward.
10.Now, door panel 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
RE-INSTALL
1. Re-install the front door glass to the door frame as
follows.
a) Insert the upper edge of the front door glass into the
six (6) tabs of the door frame.
b) Slide the front door glass downwards and insert the
lower edge of the front door glass into the six (6) tabs
of the door frame.
c) Slide the front door glass rightwards and insert the
right edge of the front door glass into the one (1) tab
of the door frame.
2. Re-install the glass stopper to the door frame as follows.
a) 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.
b) 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.
4. Re-install door panel to door frame by fitting six (6) tabs
of door frame to six (6) holes of door panel.
5. Hold the door panel to the door frame with four (4)
screws.
6. Locate door panel hinge pins into cavity hinge location
holes.
7. Re-install choke cover  to door panel by clipping into
position.
Note: After any service to the door;
(A) Make sure that the monitor switch, monitored
latch switch and stop switch are operating prop-
erly. (Refer to chapter "Test Procedures".).
(B) An approved microwave survey meter should be
used to assure compliance with proper micro-
wave radiation emission limitation standards.
(Refer to Microwave Measurement Procedure.)
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 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.)
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
airtight, 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.
Figure C-8. Door Replacement
NOTE: When carrying out any repair to the door,
do not bend or warp the slit choke (tabs on
the door panel assembly) to prevent
microwave leakage.
Door frame
Choke cover
Putty knife
PIN
PIN
LOWER
OVEN HINGE
UPPER
OVEN HINGE
LOWER
OVEN HINGE
CHOKE COVER
DOOR
PANEL
DOOR SUB 
ASSEMBLY
SLIT CHOKE
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