R209KK
11 – 3
[6] POSITIVE LOCK CONNECTOR (NO-CASE TYPE) REMOVAL
1. Disconnect the power supply cord, and remove outer
case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Push the lever of positive lock
connector.
5. Pull down on the positive lock
connector.
CAUTION: WHEN CONNECTING THE POSITIVE LOCK
CONNECTORS TO THE TERMINALS,
INSTALL THE POSITIVE LOCK
SO THAT
THE LEVER FACES YOU
[7] CONTROL PANEL ASSEMBLY REMOVAL
1. Disconnect the power supply cord and remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the leads from the control unit.
5. Remove the one (1) screw holding the control panel to the front
plate of the oven cavity.
6. Now, the control panel assembly is free.
[8] GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT
1. REMOVAL
1. Disconnect the power supply cord and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, referring to chapter of CON-
TROL PANEL ASSEMBLY REMOVAL.
5. Remove the two (2) screws holding the control unit to the control
panel frame. And remove the control unit.
6. Remove the rubber connector from the long slit on the control panel
frame.
7. Tear away the graphic sheet from the control panel frame.
8. Tear away the membrane switch from the control panel frame.
2. REINSTALL
1. Remove remaining adhesive on the control panel frame surfaces
with a soft cloth soaked in alcohol.
2. Tear the backing paper from the new membrane switch.
3. Insert the ribbon cable of the membrane switch into the slit of the
control panel frame.
4. Adjust the upper edge and right edge of the membrane switch to
the small depression on the surface of the control panel frame.
5. Attach the membrane switch to the control panel frame by rubbing
with a soft cloth not to scratch.
6. Tear the backing paper from the new graphic sheet.
7. Adjust the upper edge and left edge of the graphic sheet to the
large depression on the surface of the control panel frame.
8. Attach the graphic sheet to the control panel frame by rubbing with
a soft cloth not to scratch.
9. Tear the small backing paper from the ribbon cable of the mem-
brane switch.
10.Attach the ribbon cable to the control panel frame rear side.
11. Place the edge of the membrane switch’s ribbon cable on the lower
portion of the liquid crystal display.
12.Insert the rubber connector into the long slit on the control panel
frame.
13.Reinstall the control unit to the control panel frame with the two (2)
screws.
NOTE:
Do not contact the contact surface of the ribbon cable
(edge) and the rubber connector directly with your fin-
gers. This is to avoid oxidized. If display digits are miss-
ing or scrambled, remove control unit and clean contact
surface with alcohol. After cleaning, do not attach the rub-
ber connector until alcohol dries up. Do not use alcohol
or solution to clean the rubber connector. Make sure that
there is no trash or foreign substance on contact surface
of the rubber connector.
Figure C-2. Graphic Sheet and Membrane Switch Replacement
Terminal
Push
Pull down
1
2
Lever
Positive lock¨
connector
Figure C-1. Positive lock
connector
Rubber connector
Contact surface
Membrane
switch
Ribbon cable
of membrane
switch
Small
depression
Small
backing
paper
Liquid crystal
display
Control panel frame
(Rear side)
Control panel frame
Long slit
Slit
Ribbon
cable
Large
depression
Graphic
sheet
