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Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.
When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many
of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which
will be found in the "Test Procedure "section.
IMPORTANT:
If the oven becomes inoperative because of a blown monitor fuse, check the monitor switch, relay (RY1) primary interlock
relay (RY2), door sensing switch and secondary interlock switch before replacing the monitor fuse. If the monitor fuse
is replaced, the monitor switch must also be replaced. Use part FFS-BA033WRKZ as an assembly.
IMPORTANT:
Whenever troubleshooting is performed with the power supply cord disconnected. It may in, some cases, be necessary
to connect the power supply cord after the outer case has been removed, in this event,
1. Disconnect the power supply cord
2. Remove the outer case cabinet, referring to "OUTER CASE CABINET REMOVAL".
3. Open the door and block it open.
4. Discharge high voltage capacitor.
5. Remove the back plate from the oven, referring to "BACK PLATE REMOVAL".
6. Disconnect the leads to the primary of the power transformer.
7. Ensure that the leads remain isolated from other components and oven chassis by using insulation tape.
8. After that procedure, reconnect the power supply cord.
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 all leads removed from components during testing.
5. Reinstall the outer case (cabinet) and theback plate.
6. Reconnect the power supply cord after the outer case and the back plate are installed.
7. Run the oven and check all functions.
TROUBLESHOOTING GUIDE
13
R-8000G
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