Sharp Carousel R-326FS, Service Manual

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R- 326FS
5. Reinstall outer case and check that the oven is operating
properly.
CAUTION: WHEN REPLACING MAGNETRON, BE SURE
THE R.F. GASKET IS IN PLACE AND MOUNT-
ING SCREWS ARE TIGHTENED SECURELY.
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. 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, CON-
NECT THE POSITIVE LOCK
® SO THAT THE
LEVER FACES YOU
POSITIVE LOCK
®
CONNECTOR (NO-CASE TYPE) REMOVAL
Figure C-1. Positive lock ® connector
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 control unit.
5. Remove the one (1) screw holding the control panel
CONTROL PANEL ASSEMBLY REMOVAL
decoration to the chassis support.
6. Remove the one (1) screw holding the control panel assembly
to the oven flange.
7. Slide the control panel assembly upward and remove it.
8. Now, individual components can be removed.
GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT
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
CONTROL PANEL ASSEMBLY REMOVAL.
5. Disconnect the ribbon cable from the connector CN-G on
the control unit.
6. Tear away the graphic sheet from the control panel frame.
7. Tear away the membrane switch from the control panel
frame.
Installation
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 right 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. Connect the ribbon cable to the connector CN-G on the
control unit.
NOTE:
Do not contact the conductor portion of the ribbon cable
(edge) and the rubber connector directly with your fingers.
This is to avoid oxidized.
Figure C-2. Graphic Sheet and Membrane Switch Replacement
Graphic sheet
Rubber connector
Conductor portions
Membrane
switch
Small
depression
Ribbon
cable
Control panel frame
(Rear side)
Control panel frame
Long slit
Slit
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector