Disassembly And Reassembly - Samsung MD1200WD Service Manual

4. Disassembly and Reassembly

4-1 Replacement of Magnetron, Motor Assembly and Lamp
Remove the magnetron including the shield case,
permanent magnet, choke coils and capacitors (all of
which are contained in one assembly).
1. Disconnect all lead wires from the magnetron.
2. Remove screws securing the magnetron to the
wave guide.
3. Take out the magnetron very carefully.
4. Remove a screw securing Bracket MGT.
5. Remove the Bracket MGT.
NOTE1: When removing the magnetron, make sure
that its antenna does not hit any adjacent
parts, or it may be damaged.
NOTE2: When replacing the magnetron, be sure to
remount the magnetron gasket in the correct
position and make sure the gasket is in good
condition.
4-2 Replacement of High Voltage Transformer
1. Discharge the high voltage capacitor.
2. Disconnect all the leads.
3. Remove the screw.
4. Reconnect the leads correctly and fi rmly.
PRECAUTION
Servicemen should remove their watches whenever work-
ing close to or replacing the magnetron.
PRECAUTION
There exists HIGH VOLTAGE ELECTRICITY with high
current capabilities in the circuits of the HIGH
VOLTAGE TRANSFORMER secondary and fi lament ter-
minals. It is extremely dangerous to work on or near these
circuits with the oven energized.
DO NOT measure the voltage in the high voltage circuit
including fi lament voltage of magnetron.
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