R-8000G
1
WARNING TO SERVICE PERSONNEL
Microwave ovens contain circuitry capable of pro-
ducing very high voltage and current, contact with
following parts
may result in a severe, possibly
fatal, electrical shock.
(Example)
High Voltage Capacitor, High Voltage Power Trans-
former, Magnetron, High Voltage Rectifier Assem-
bly, High Voltage Harness etc..
Read the Service Manual carefully and follow all
instructions.
Before Servicing
1. Disconnect the power supply cord
, a n d t h e n
remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
When the testing is completed,
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. Reconnect the leads to the primary of the power transformer.
5. Reinstall the outer case (cabinet).
6. Reconnect the power supply cord after the outer case is
installed.
7. Run the oven and check all functions.
After repairing
1. Reconnect all leads removed from components during testing.
2. Reinstall the outer case (cabinet).
3. Reconnect the power supply cord after the outer case is
installed.
4. Run the oven and check all functions.
Microwave ovens should not be run empty. To test for the presence
of microwave energy within a cavity, place a cup of cold water on
the oven turntable, close the door and set the power to HIGH and
set the microwave timer for two (2) minutes. When the two minutes
has elapsed (timer at zero) carefully check that the water is now
hot. If the water remains cold carry out
Before Servicing
proce-
dure and re-examine the connections to the component being
tested.
When all service work is completed and the oven is fully assem-
bled, the microwave power output should be checked and a
microwave leakage test should be carried out.
Don't Touch !
Danger High Voltage
WARNING:RISK OF ELECTRIC SHOCK.
DISCHARGE THE HIGH-VOLTAGE
CAPACITOR BEFORE SERVICING.
The high-voltage capacitor remains charged about 60 seconds
after the oven has been switched off. Wait for 60 seconds and
then short-circuit the connection of the high-voltage capacitor
(that is the connecting lead of the high-voltage rectifier) against
the chassis with the use of an insulated screwdriver.
Whenever troubleshooting is performed the power supply must be
disconnected. It may, in some cases, be necessary to connect the
power supply after the outer case has been removed, in this event,
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 leads to the primary of the power transformer.
5. Ensure that the leads remain isolated from other components
and oven chassis by using insulation tape.
6. After that procedure, reconnect the power supply cord.
