Sharp R-930CS Service Manual page 34

R-930CS
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 filament leads of transformer from the
magnetron and capacitor.
5. Disconnect high voltage lead of capacitor from the
transformer.
6. Disconnect wire leads from the transformer.
7. Remove two (2) screws holding the transformer to the
base cabinet.
Re-install
1. Rest the transformer on the base cabinet with its primary
terminals toward rear cabinet.
2. Insert the two edges of the transformer into two metal
tabs of the base cabinet.
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 filament lead of transformer from magnetron.
5. Disconnect high voltage wire lead from magnetron.
6. Carefully remove four (4) mounting screws hold the
magnetron to waveguide, when removing the screws
holding the magnetron to prevent it from falling.
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. Remove one (1) screw holding the rectifier assembly to
the capacitor holder.
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 the high voltage wire leads and rectifier
POWER TRANSFORMER REMOVAL
MAGNETRON REMOVAL
HIGH VOLTAGE RECTIFIER ASSEMBLY REMOVAL
HIGH VOLTAGE CAPACITOR REMOVAL
Special screw
Screw Driver
(Type: TORX T20 H or
GTXH20-100)
3. Make sure the transformer is mounted correctly to the
corners underneath those tabs.
4. After re-installing the transformer, secure the transformer
with two screws to the base cabinet, one is with outer
tooth washer and the other is without outer-tooth washer.
5. Re-connect the wire leads (primary and high voltage)
and high voltage lead to the transformer and filament
leads of transformer to the magnetron and capacitor,
referring to the "Pictorial Diagram".
6. Re-install the outer case and check that the oven is
operating properly.
NOTE HOT (ORANGE) WIRE MUST BE CONNECTED
TO THE POWER TRANSFORMER TERMINAL
NEAREST TO THE TRANSFORMER MOUNTING
SCREW.
7. Remove the magnetron from the unit with care so the
magnetron tube should not hit by any metal object
around the tube.
CAUTION: WHEN REPLACING THE MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND
THE MAGNETRON MOUNTING SCREWS
ARE TIGHTENED SECURELY.
5. Disconnect the rectifier assembly from the capacitor and
magnetron.
CAUTION: WHEN REPLACING THE SILICON RECTIFIER
ASSEMBLY, THE GROUND SIDE TERMINAL
MUST BE SECURED FIRMLY WITH A
GROUNDING SCREW.
assembly from high voltage capacitor and magnetron.
5. Disconnect filament lead of transformer from high voltage
capacitor.
6. Disconnect high voltage wire lead of capacitor from
transformer.
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