Troubleshooting and Testing
3-7
Procedure
Letter
H
I
Component Test
BLOWN MONITOR FUSE
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor. (See Warnings and Instructions on page 3-1)
4. If the monitor fuse is blown when the door is opened, check the primary interlock switch, door
sensing switch relay (RY1) and monitor switch according to the “TEST PROCEDURE” for those
switches before replacing the blown monitor fuse.
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.
OVEN THERMAL CUT-OUT (on the side of steam duct)
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor. (See Warnings and Instructions on page 3-1)
4. A continuity check across the thermal cut-out terminals should indicate a closed circuit unless
the temperature of the oven thermal cut-out reaches approximately 302°F (150°C). The
thermal cut-out resets automatically at approximately 266°F (130°C). If the thermal cut-out
has operated under the normal condition, replace the thermal cut-out. An open thermal cut-out
indicates overheating of the oven cavity.
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.
MAGNETRON THERMAL CUT-OUT (on the waveguide)
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor. (See Warnings and Instructions on page 3-1)
4. A continuity check across the thermal cut-out terminals should indicate a closed circuit unless
the temperature of the thermal cut-out reaches approximately 257°F (125°C). An open thermal
cut-out indicates overheating of the magnetron. Check for restricted air flow to the magnetron
through the vent holes of the oven cavity, especially the cooling duct and cooling fan.
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.
If the monitor fuse is blown by improper switch operation , the monitor fuse and switch
must be replaced with “monitor fuse and switch assembly “ part number FFS-BA012WRK0,
even if the monitor switch operates normally . The monitor fuse and switch assembly is
packed with a 20 ampere fuse and switch.
If the thermal cut-out indicates open circuit at room temperature, replace thermal cut-out.
Summary of Contents for E30MO65GSSB
Page 2: ......
Page 24: ...Operation 2 12 Notes ...
Page 26: ...Troubleshooting and Testing 3 2 ...
Page 56: ...Component Teardown 4 12 Notes ...
Page 59: ...Wiring Diagrams 5 3 Control Panel Circuit Diagram ...
Page 61: ...Parts List 6 1 Key Unit And Door Assembly ...
Page 62: ...Parts List 6 2 Remainder of Parts List is on Page 6 4 ...
