R-21JCA-F
21
HIGH VOLTAGE RECTIFIER ASSEMBLY AND HIGH VOLTAGE CAPACITOR REMOVAL
To remove the components, proceed as follows.
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 H.V. wire of the high voltage rectifier assembly
from the magnetron and the power transformer.
5. Disconnect the filament lead of the power transformer from
the high voltage capacitor.
6. Remove one (1) screw holding earth side terminal of the
high voltage rectifier assembly.
7. Disconnect all the leads and terminals of high voltage
rectifier assembly from the high voltage capacitor.
8. Now, the high voltage rectifier assembly should be free.
9. Remove one (1) screw holding the capacitor holder to the
oven cavity rear plate.
10. Remove one (1) screw holding the fan duct to the oven
cavity rear plate.
11. Release the capacitor holder from the fan duct.
12. Remove the capacitor from the capacitor holder.
13. Now, the capacitor should be free.
CAUTION: WHEN REPLACING HIGH VOLTAGE RECTI-
FIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH VOLT-
AGE RECTIFIER MUST BE SECURED FIRMLY
WITH A GROUNDING SCREW.
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 high voltage wire of the high voltage rectifier
assembly and filament lead of the transformer from the
magnetron.
5. Remove the one (1) screw holding the airguide to the
magnetron and remove the airguide.
6. Remove the one (1) screw holding the insertion plate A to
the magnetron and remove the insertion plate A.
7. Remove the one (1) screw holding the chassis support to
the magnetron.
MAGNETRON REMOVAL
8. Release the tabs of air intake duct from the chassis support
and the oven cavity.
9. Move the air intake duct to the left.
10. Carefully remove four (4) screws holding magnetron to
waveguide, when removing the screws hold the magnetron
to prevent it from falling.
11. Remove the magnetron from the waveguide with care so
the magnetron antenna is not hit by any metal object around
the antenna.
CAUTION: WHEN REPLACING THE MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND
THE MAGNETRON MOUNTING SCREWS
ARE TIGHTENED SECURELY.
CONTROL PANEL ASSEMBLY
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 main wire harness from the control unit.
5. Remove the one (1) screw holding the control panel assembly
to the oven cavity front plate.
6. Lift up the control panel assembly.
7. Now, the control panel assembly is free.
CONTROL UNIT
8. Remove the five (5) screws holding the control unit to the
control panel frame.
9. Remove the control unit from the control panel frame.
10.Now, the control unit is free.
CONTROL PANEL ASSEMBLY REMOVAL
TIMER KNOB
11.After removing the control unit, release the tab of the timer
knob from the hole of the control panel.
12.Now, the timer knob is free.
NOTE: 1. Before attaching a new timer sheet, wipe off
remaining adhesive on the control panel frame
surfaces completely with a soft cloth soaked in
alcohol.
2. When attaching the timer sheet to the control panel
frame, adjust the upper edge and right edge of the
timer sheet to the correct position of control panel
frame.
3. Stick the timer sheet firmly to the control panel
frame by rubbing with a soft cloth so not to cause
scratches.
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. Lift up the oven lamp socket from air intake duct.
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
Figure C-1. Oven lamp socket
Oven lamp
socket
Terminal
Wire lead
Terminal hole
Flate type small
screw driver
