26
R - 320HK
R- 320HQ
R-320HW
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. Disconnect all wire leads from magnetron.
5. Remove the one (1) screw holding the chassis support
to the magnetron.
6. Release the chassis support from the hole of the oven
cavity front flange.
7. Remove the two (2) screws holding air duct to magnetron
and oven cavity top plate.
8. Remove the air duct from oven.
9. Carefully remove the four (4) screws holding magnetron
to waveguide flange.
10.Remove magnetron with care so that magnetron antenna
is not hit by any metal object around antenna.
11.Now, the magnetron is free.
Reinstallation
1. Reinstall the magnetron to waveguide flange with the
four (4) screws.
2. Reinstall the air duct to the oven cavity top plate and the
magnetron with two (2) screws.
3. Insert the end of the chassis support into the hole of the
oven cavity front flange.
4. Hold the other end of the chassis support to the magnetron
with the one (1) screw.
5. Reconnect the wire leads to the magnetron. Refer to
"PICTORIAL DIAGRAM" on page 28.
6. 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.
MAGNETRON REMOVAL
HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR 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. Disconnect the high voltage wire of the power transformer
from the high voltage capacitor.
5. Disconnect the high voltage wire of high voltage rectifier
assembly from the magnetron.
6. Disconnect the filament lead (short one) of the power
transformer from the high voltage capacitor.
7. Remove the one (1) screw holding capacitor holder to
bottom plate.
8. Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
9. Disconnect rectifier terminal from capacitor.
High voltage rectifier assembly is now free.
10.Remove capacitor holder. Capacitor is now free.
CAUTION: WHEN REPLACING HIGH VOLTAGE RECTI-
FIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A GROUNDING SCREW.
6. Lift entire outer case from the unit.
CAUTION: 1. DISCONNECT OVEN FROM POWER SUP
PLY BEFORE REMOVING OUTER CASE.
2. DISCHARGE THE HIGH VOLTAGE CA-
PACITOR BEFORE TOUCHING ANY OVEN
COMPONENTS OR WIRING.
NOTE: When replacing the outer case, the 2 special
Torx screws must be reinstalled in the same
locations.
1. Disconnect the power supply cord and then remove
outer case.
2. Open the oven door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect wire leads (primary) from power transformer
and the filament leads and high voltage wire from the
magnetron and capacitor terminals.
5. Remove four (4) screws (two (2) screws from the upper
side and two (2) screws from bottom side) holding
transformer to bottom plate.
6. Remove transformer from bottom plate.
POWER TRANSFORMER REMOVAL
Reinstallation
1. Rest transformer on the bottom plate with its primary
terminals toward the oven face plate.
2. Secure transformer with four (4) screws (two (2) screws
from the upper side and two (2) screws from bottom side)
to bottom plate.
3. Reconnect wire leads (primary) to power transformer
and filament leads and high voltage wire of transformer
to magnetron and high voltage capacitor. Refer to
"PICTORIAL DIAGRAM" on page 28.
4. Reinstall outer case and check that oven is operating
properly.
Special screw
Screw Driver
(Type: TORX T20 H or
GTXH20-100)
