Sharp R-8740 (serv.man10) Service Manual ▷ View online
R-8740M - 32
DOOR REPLACEMENT REMOVAL
Figure C-5. Door Disassembly
1. CARRY OUT 3D CHECKS.
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
gap between the choke cover and door frame as shown
in Figure C-5 to free engaging parts.
in Figure C-5 to free engaging parts.
4. Release choke cover from door panel.
5. Now choke cover is free.
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
5. Now choke cover is free.
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 downward.
10. Now, door panel is free.
11. Slide latch head upward and remove it from door frame
11. Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
head.
12. Now, latch head and latch spring are free.
13. Remove the two (2) screws holding the glass stopper to
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
15. Slide the front door glass leftwards and then slide
downwards 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.
1. Re-install the front door glass to the door frame as follows.
Insert the upper edge of the front door glass into the six
(6) tabs of the door frame.
(6) tabs of the door frame.
a) 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.
frame.
b) 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.
frame.
2. Re-install the glass stopper o the door frame as follows.
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.
two (2) holes of the glass stopper meet the two (2) pins of
the door frame.
a) 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.
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
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 door sensing switch and primary
(A) Make sure that door sensing switch and primary
latch switch are operating properly. (Refer to chapter
"Test Procedures".).
"Test Procedures".).
(B) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards. (Refer to
Microwave Measurement Procedure.)
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
1. Door latch heads smoothly catch latch hook through latch
holes and that latch head goes through centre of latch
hole.
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 Microwave
Measurement Procedure.)
Measurement Procedure.)
Note:
Figure C-6. 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.
the door panel assembly) to prevent
microwave leakage.
Door frame
Choke cover
Putty knife
PIN
PIN
OVEN HINGE
CHOKE COVER
DOOR
PANEL
PANEL
DOOR SUB
ASSEMBLY
ASSEMBLY
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
R-8740M - 32
DOOR REPLACEMENT REMOVAL
Figure C-5. Door Disassembly
1. CARRY OUT 3D CHECKS.
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
gap between the choke cover and door frame as shown
in Figure C-5 to free engaging parts.
in Figure C-5 to free engaging parts.
4. Release choke cover from door panel.
5. Now choke cover is free.
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
5. Now choke cover is free.
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 downward.
10. Now, door panel is free.
11. Slide latch head upward and remove it from door frame
11. Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
head.
12. Now, latch head and latch spring are free.
13. Remove the two (2) screws holding the glass stopper to
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
15. Slide the front door glass leftwards and then slide
downwards 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.
1. Re-install the front door glass to the door frame as follows.
Insert the upper edge of the front door glass into the six
(6) tabs of the door frame.
(6) tabs of the door frame.
a) 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.
frame.
b) 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.
frame.
2. Re-install the glass stopper o the door frame as follows.
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.
two (2) holes of the glass stopper meet the two (2) pins of
the door frame.
a) 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.
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
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 door sensing switch and primary
(A) Make sure that door sensing switch and primary
latch switch are operating properly. (Refer to chapter
"Test Procedures".).
"Test Procedures".).
(B) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards. (Refer to
Microwave Measurement Procedure.)
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
1. Door latch heads smoothly catch latch hook through latch
holes and that latch head goes through centre of latch
hole.
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 Microwave
Measurement Procedure.)
Measurement Procedure.)
Note:
Figure C-6. 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.
the door panel assembly) to prevent
microwave leakage.
Door frame
Choke cover
Putty knife
PIN
PIN
OVEN HINGE
CHOKE COVER
DOOR
PANEL
PANEL
DOOR SUB
ASSEMBLY
ASSEMBLY
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
R-8740M - 32
DOOR REPLACEMENT REMOVAL
Figure C-5. Door Disassembly
1. CARRY OUT 3D CHECKS.
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
gap between the choke cover and door frame as shown
in Figure C-5 to free engaging parts.
in Figure C-5 to free engaging parts.
4. Release choke cover from door panel.
5. Now choke cover is free.
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
5. Now choke cover is free.
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 downward.
10. Now, door panel is free.
11. Slide latch head upward and remove it from door frame
11. Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
head.
12. Now, latch head and latch spring are free.
13. Remove the two (2) screws holding the glass stopper to
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
15. Slide the front door glass leftwards and then slide
downwards 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.
1. Re-install the front door glass to the door frame as follows.
Insert the upper edge of the front door glass into the six
(6) tabs of the door frame.
(6) tabs of the door frame.
a) 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.
frame.
b) 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.
frame.
2. Re-install the glass stopper o the door frame as follows.
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.
two (2) holes of the glass stopper meet the two (2) pins of
the door frame.
a) 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.
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
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 door sensing switch and primary
(A) Make sure that door sensing switch and primary
latch switch are operating properly. (Refer to chapter
"Test Procedures".).
"Test Procedures".).
(B) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards. (Refer to
Microwave Measurement Procedure.)
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
1. Door latch heads smoothly catch latch hook through latch
holes and that latch head goes through centre of latch
hole.
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 Microwave
Measurement Procedure.)
Measurement Procedure.)
Note:
Figure C-6. 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.
the door panel assembly) to prevent
microwave leakage.
Door frame
Choke cover
Putty knife
PIN
PIN
OVEN HINGE
CHOKE COVER
DOOR
PANEL
PANEL
DOOR SUB
ASSEMBLY
ASSEMBLY
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
R-8740M - 32
DOOR REPLACEMENT REMOVAL
Figure C-5. Door Disassembly
1. CARRY OUT 3D CHECKS.
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
gap between the choke cover and door frame as shown
in Figure C-5 to free engaging parts.
in Figure C-5 to free engaging parts.
4. Release choke cover from door panel.
5. Now choke cover is free.
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
5. Now choke cover is free.
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 downward.
10. Now, door panel is free.
11. Slide latch head upward and remove it from door frame
11. Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
head.
12. Now, latch head and latch spring are free.
13. Remove the two (2) screws holding the glass stopper to
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
15. Slide the front door glass leftwards and then slide
downwards 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.
1. Re-install the front door glass to the door frame as follows.
Insert the upper edge of the front door glass into the six
(6) tabs of the door frame.
(6) tabs of the door frame.
a) 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.
frame.
b) 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.
frame.
2. Re-install the glass stopper o the door frame as follows.
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.
two (2) holes of the glass stopper meet the two (2) pins of
the door frame.
a) 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.
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
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 door sensing switch and primary
(A) Make sure that door sensing switch and primary
latch switch are operating properly. (Refer to chapter
"Test Procedures".).
"Test Procedures".).
(B) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards. (Refer to
Microwave Measurement Procedure.)
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
1. Door latch heads smoothly catch latch hook through latch
holes and that latch head goes through centre of latch
hole.
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 Microwave
Measurement Procedure.)
Measurement Procedure.)
Note:
Figure C-6. 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.
the door panel assembly) to prevent
microwave leakage.
Door frame
Choke cover
Putty knife
PIN
PIN
OVEN HINGE
CHOKE COVER
DOOR
PANEL
PANEL
DOOR SUB
ASSEMBLY
ASSEMBLY
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
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