Service manual

R-820JS
35
REMOVAL
1. Disconnect the power supply cord.
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-6 to free engaging parts.
4. Pry the principles of the lever and lift up the choke cover
by inserting a putty knife as shown in Figure C-6.
5. Release choke cover from door panel.
6. Now choke cover is free.
Figure C-6. Door Disassembly
7. Release two (2) pins of door panel from two (2) holes 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.Release door panel from seven (7) tabs of door frame by
sliding door panel downward.
11.Now, door panel is free.
DOOR REPLACEMENT
misadjustment, the following adjustment should be made.
4. Loosen the two (2) screws holding latch hook to the oven
cavity front flange.
5. With door closed, adjust latch hook by moving it back and
forth, and up and down. In and out play of the door
allowed by the upper and lower position of the latch hook
should be less than 0.5mm. The vertical position of the
latch hook should be adjusted so that the door sensing
switch and secondary interlock switch are activated with
the door closed. The horizontal position of the latch hook
should be adjusted so that the plunger of the monitor
switch is pressed with the door closed.
6. Secure the screws with washers firmly.
7. Check the operation of all switches. If each switch has
not activated with the door closed, loosen screw and
adjust the latch hook position.
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 door)
should be less than 0.5mm.
2. The door sensing switch and secondary interlock 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.)
Figure C-5. Latch Switch Adjustments
12.Slide latch head upward and remove it from door frame
with releasing latch spring from door frame and latch
head.
13.Now, latch head and latch spring are free.
14.Remove the two (2) screws holding the glass stopper to
the door frame.
15.Remove the glass stopper from the door frame.
16.Slide the front door glass left and then slide upwards to
release the tabs holding it.
17.Now, the front door glass is free
RE-INSTALL
1. Re-install the front door glass to the door frame as
follows.
1-1. Insert the lower edge of the front door glass into the six
(6) tabs of the door frame.
1-2. Slide the front door glass upwards and insert the upper
edge of the front door glass into the five (5) tabs of the
door frame.
1-3. Slide the front door glass right and insert the right edge
of the front door glass into the two (2) tabs of the door
frame.
2. Re-install the glass stopper to the door frame as follows.
2-1. 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.
2-2. 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.
4. Re-install door panel to door frame by fitting seven (7)
tabs of door frame to seven (7) holes of door panel.
Latch Hook
Door
Sensing
Switch
Monitor
Switch
Secondary
Interlock
Switch
Switch
Lever
Latch
Heads
Door
Putty Knife
Door Frame
Choke Cover