21
R-312AW
R-312AK
1. Disconnect oven from power supply and remove outer
case.
2. Discharge high voltage capacitor.
3. Bend the tab of the partition angle holding the lamp
socket.
4. Lift up the oven lamp socket.
5. Pull the wire leads from the oven lamp socket by pushing
the terminal hole of the oven lamp socket with the small
flat type screw driver.
6. Now, the oven lamp socket is free.
OVEN LAMP AND LAMP SOCKET REMOVAL
POSITIVE LOCK
®
CONNECTOR (NO-CASE TYPE) REMOVAL
Figure C-4. Positive lock
®
connector
Push the lever of positive lock
®
connector. Pull down on the
positive lock
®
connector.
CAUTION: WHEN YOU CONNECTING THE POSITIVE
LOCK
®
CONNECTORS TO THE TERMINALS,
INSTALL THE POSITIVE LOCK
®
SO THAT
THE LEVER FACES YOU
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector
Oven lamp
socket
Terminal
Wire lead
Terminal hole
Flate type small
screw driver
Figure C-3. Oven lamp socket
TURNTABLE MOTOR REMOVAL
1. Disconnect oven from power supply.
2. Remove turntable and turntable support from oven cavity.
3. Lay the oven on it's backside. Remove the turntable
motor cover by snipping off the material in four corner.
4. Where the corners have been snipped off bend corner
areas flat. No sharp edge must be evident after removal
of the turntable motor cover.
5. Disconnect wire leads from turntable motor.
(See "Positive lock connector removal")
6. Remove two (2) screws holding turntable motor to oven
cavity.
7. Now the turntable motor is free.
8. After replacement use the one (1) screw to fit the
turntable motor cover.
1. Disconnect oven from power supply and remove outer
case.
2. Discharge high voltage capacitor.
3. Disconnect wire leads from the door sensing switch and
the oven cavity front flange.
4. Disconnect the wire leads from panel components.
5. Make one (1) tab of the oven cavity front plate straight
holding the control panel assembly to the oven flange.
6. Slide the control panel assembly upward and remove it.
7. Now, individual components can be removed.
NOTE: 1. Before attaching a new key unit, wipe off remaining
adhesive on the control panel frame surfaces
completely with a soft cloth soaked in alcohol.
2. When attaching the key unit to the control panel
frame, adjust the upper edge and right edge of
the key unit to the correct position of control panel
frame.
3. Stick the key unit firmly to the control panel frame
by rubbing with soft cloth not to scratch.
CPU UNIT AND POWER UNIT
NOTE: When soldering the CPU unit and the power unit,
make sure both the CPU unit and the power unit are
parallel, as shown figure C-5.
Handle the CPU unit carefully so that the ribbon
cable does not come off. Because the ribbon cable
is sticked on the LCD and the printed wiring board
only by heated paste.
Connector
Power unit
CPU unit
Solder
These should be parallel
Figure C-5. Side view of CPU unit and Power unit
Printed wiring board
of CPU unit
Liquid Crystal
Display (LCD)
Ribbon cable
Figure C-6. CPU unit
CONTROL PANEL ASSEMBLY REMOVAL
