R408LS
11 – 4
5. Install the fan motor assembly to the oven cavity back plate with
two (2) screws.
6. Connect the wire leads to the magnetron and fan motor, referring to
the pictorial diagram.
[10] CONTROL PANEL ASSEMBLY 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. Disconnect the wire leads from panel components.
5. Remove the one (1) screw holding the control panel to the oven
cavity front plate.
6. Straighten the nail holding the control panel assembly to the oven
cavity front plate.
7. Slide the control panel assembly upward and remove it.
8. Now, individual components can be removed.
[11] 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. Disconnect the ribbon cable of the membrane switch from the con-
trol unit.
6. Remove the back light PWB from the control panel frame.
7. Remove the four (4) screws holding the control unit to the control
panel frame. And remove the control unit.
8. Remove the display window from the control panel frame.
9. Tear away the graphic sheet from the control panel frame.
10.Tear away the membrane switch from the control panel frame.
2. REINSTALLATION
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. Insert the ribbon cable into the slit of the control unit.
10.Reinstall the control unit to the control panel frame and hold with
the four (4) screws.
11.Insert and connect the edge of the membrane switch’s ribbon cable
into the connector CN-G.
12.Insert the back light PWB into the square hole.
13.Reinstall the display window to the control panel frame.
CAUTION: When the back light PWB is installed into the square hole
of the control panel frame, the wire leads should be routed
through the cut off portion, not to be pinched.
Graphic Sheet and Membrane Switch Replacement
Gap
Rotor
Bracket
Stator
Groove joint pliers
Coil
Shaft
Axis
Stator
Rotor
These are the positions
that should be pinched
with pliers.
Shaft
Table
Center of
bracket
Rear View
Side View
Slit
Graphic sheet (Key sheet)
Membrame switch (FPC)
Control panel frame
Large
depression
Small
depression
Ribbon
cable
