19
R-312AW
R-312AK
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.
DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING
AFTER REMOVING OUTER CASE.
To remove the components, procedure as follows.
1. Disconnect oven from power supply.
2. Remove four(4) screws from rear and one (1) screw
along the right side of case.
3. Slide the entire case back out about 1 inch(3 cm) to free
it from retaining clips on the cavity face plate.
4. Lift entire case from the unit.
CAUTION: DISCONNECT OVEN FROM POWER SUP-
PLY BEFORE REMOVING OUTER CASE.
POWER TRANSFORMER REMOVAL
lead (longer one) of power transformer.
2. Rest transformer on the bottom plate right with its primary
terminals toward the oven face plate.
3. Secure transformer with four screws to bottom plate
right.
4. Re-connect wire leads (primary and high voltage) to
power transformer and filament leads of transformer to
magnetron and high voltage capacitor. Refer to
"PICTORIAL DIAGRAM".
5. Re-install outer case and check that oven is operating
properly.
1. Disconnect oven from power supply and remove outer
case.
2. Discharge high voltage capacitor.
3. Disconnect wire leads from power transformer,
magnetron and capacitor terminals.
4. Remove four (4) screws holding transformer to bottom
plate right.
5. Remove transformer from bottom plate right.
6. Remove the one (1) terminal insulator and tube from
filament lead (longer one) of power transformer.
Re-install
1. Install the terminal insulator to receptacle of filament
1. Open covers of the terminal insulator by using small flat
type screw driver.
2. Remove the receptacle from the terminal insulator.
3. Now, the terminal insulator is free.
Installation
1. Insert the receptacle into terminal insulator.
2. Close covers of the terminal insulator, as shown below.
Terminal
insulator
Flat type
screw driver
RECEPTACLE
COVERS
TERMINAL INSULATOR REPLACEMENT
To prevent an electric shock, take the following man-
ners.
1. Before wiring,
1) Disconnect the power supply.
2) Open the door and wedge the door open.
3) Discharge the high voltage capacitor and wait for 60
seconds.
2. Don’t let the wire leads touch to the following parts;
1) High voltage parts:
Magnetron, High voltage transformer, High voltage
capacitor and High voltage rectifier assembly.
2) Hot parts:
Oven lamp, Magnetron, High voltage transformer
and Oven cavity.
WARNING FOR WIRING
3) Sharp edge:
Bottom plate, Oven cavity, Waveguide flange,
Chassis support and other metallic plate.
4) Movable parts (to prevent a fault)
Fan blade, Fan motor, Switch, Switch lever, Open
button.
3. Do not catch the wire leads in the outer case cabinet.
4. Insert the positive lock connector certainly until its pin
is locked. And make sure that the wire leads should not
come off even if the wire leads is pulled.
5. To prevent an error function, connect the wire leads
correctly, referring to the Pictorial Diagram.
OUTER CASE REMOVAL
