Troubleshooting
3-7
Procedure
Letter
F
G
Component Test
SECONDARY INTERLOCK SWITCH TEST
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. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open
(NO) terminal of the switch. The meter should indicate an open circuit with the door open
and a closed circuit with the door closed. If improper operation is indicated, replace the sec-
ondary interlock switch.
5. Reconnect all leads removed from components during testing.
6. Reinstall the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
PRIMARY INTERLOCK SYSTEM TEST
1. DOOR SENSING SWITCH
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. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open
(NO) terminal of the switch. The meter should indicate an open circuit with the door open
and a closed circuit with the door closed. If improper operation is indicated, replace the door
sensing switch.
5. Reconnect all leads removed from components during testing.
6. Reinstall the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
NOTE:
If the door sensing switch contacts fail in the open position and the door is closed, the
cooling fan motor, stirrer motor and oven light will be activated by RY1.
2. PRIMARY INTERLOCK RELAY (RY2)
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 two (2) wire leads from the male tab terminals of the Primary Interlock Relay.
Check the state of the relay contacts using a ohmmeter.
The relay contacts should be open. If the relay contacts are closed, replace the circuit board
entirely or the relay itself.
5. Reconnect all leads removed from components during testing.
6. Reinstall the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
Summary of Contents for EI30BM55HB - 30" Microwave Oven
Page 1: ... 5995524393 October 2008 Technical Service Manual Over The Range Microwave Oven ...
Page 2: ......
Page 3: ...1 1 Section 1 Basic Information Basic Information ...
Page 13: ...2 1 Section 2 Operation Operation ...
Page 22: ...Operation 2 10 Notes ...
Page 23: ...3 1 Section 3 Troubleshooting Guide Troubleshooting ...
Page 39: ...4 1 Section 4 Component Teardown Component Teardown ...
Page 54: ...Component Teardown 4 16 Notes ...
Page 55: ...5 1 Section 5 Wiring Diagrams Wiring Diagrams ...
Page 60: ...Wiring Diagrams 5 6 Notes ...