Service manual

19
R-3S68
Re-install
1. Insert tube into filament lead (longer one) of power
transformer.
2. Install the terminal insulator to receptacle of filament
lead (longer one) of power transformer.
3. Rest transformer on the bottom plate right with its primary
terminals toward the oven face plate.
4. Secure transformer with four screws to bottom plate right.
5. 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".
6. Re-install outer case and check that oven is operating
properly.
TERMINAL INSULATOR REPLACEMENT
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 illustrated
below.
RECEPTACLE
COVERS
Terminal 
insulator
Flat type
screw driver
HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL
7. Disconnect wire leads from capacitor and remove
capacitor holder.
8. Now, high voltage capacitor is free.
CAUTION: WHEN REPLACING HIGH VOLTAGE
RECTIFIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH VOLTAGE
RECTIFIER MUST BE SECURED FIRMLY WITH A
GROUNDING SCREW.
1. CARRY OUT 3D CHECKS.
2. Disconnect the high voltage wire of the high voltage
rectifier assembly from the magnetron.
3. Remove one (1) screw holding capacitor holder to oven
cavity rear plate.
4. Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
5. Disconnect rectifier terminal from capacitor.
6. Now, high voltage rectifier assembly is free.
POSITIVE LOCK
®
CONNECTOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Pushing the lever of positive lock
®
connector.
3. Pull out the positive lock
®
connector.
CAUTION: WHEN YOU (SERVICE ENGINEERS) CON-
NECT THE POSITIVE LOCK
®
CONNECTORS
TO THE TERMINALS, CONNECT THE POSI-
TIVE LOCK
®
SO THAT THE LEVER FACE
YOU (SERVICE ENGINEERS).
Figure C-2. Positive lock
®
connector
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector
CONTROL PANEL ASSEMBLY REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from panel components.
3. Release one (1) nail holding the control panel assembly
to the oven flange.
4. Remove control panel assembly and slide upward.
5 . Now, individual components can be removed.
NOTE: 1. Before attaching a new key sheet, wipe off
remaining adhesive on the control panel frame
surfaces completely with a soft cloth soaked in
alcohol.
2. When attaching the key sheet to the control panel
frame, adjust the upper edge and right edge of
the key sheet to the correct position of control
panel frame.
3. Stick the key sheet firmly to the control panel
frame by rubbing with soft cloth not to scratch.