Pictorial Diagram - Sharp R-430CS Service Manual

R - 4 3 0 C S
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 and high voltage) from
power transformer and the filament leads from the
magnetron and capacitor terminals.
5. Remove four (4) screws holding transformer to bottom
plate.
6. Remove transformer from bottom plate.
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 A 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.
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 wire leads from magnetron.
5. Remove the two (2) screws holding the chassis support
to the magnetron and the oven cavity front flange.
6. Slide the magnetron duct slightly so that the two (2)
screws at left hand side of the magnetron appear.
7. Carefully remove the four (4) screws holding magnetron
to waveguide flange.
8. Remove the magnetron with care so that the magnetron
antenna is not hit by any metal object around the antenna.
9. Now, the magnetron is free.
POWER TRANSFORMER REMOVAL
Re-install
1. Rest transformer on the bottom plate with its primary
2. Secure transformer with four screws to bottom plate.
3. Re-connect wire leads (primary and high voltage) to
4. Re-install outer case and check that oven is operating
7. Remove one (1) screw holding capacitor holder with the
8. Disconnect rectifier terminal from capacitor.
9. Remove capacitor holder. Capacitor is now free.
CAUTION: WHEN REPLACING HIGH VOLTAGE RECTI-
MAGNETRON REMOVAL
Re-install
1. Re-install the magnetron to waveguide flange with care
2. Secure the magnetron with the four (4) screws.
3. Hold the chassis support to the oven cavity front plate and
4. Reconnect the wire leads to the magnetron. Refer to
5. Re-install outer case and check that the oven is operating
CAUTION: WHEN REPLACING MAGNETRON, BE SURE
28
Special screw
Screw Driver
(Type: TORX T20 H or
GTXH20-100)
terminals toward the oven face plate.
power transformer and filament leads of transformer to
magnetron and high voltage capacitor. Refer to
"PICTORIAL DIAGRAM" on page 33.
properly.
high voltage rectifier to the base plate.
High voltage rectifier assembly is now free.
FIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A GROUNDING SCREW.
to prevent damage to the magnetron antenna.
the magnetron with the two (2) screws.
"PICTORIAL DIAGRAM" on page 33.
properly.
THE R.F. GASKET IS IN PLACE AND MOUNT-
ING SCREWS ARE TIGHTENED SECURELY