Electrolux EI30BM55HB - 30" Microwave Oven, Техническое и сервисное руководство

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Troubleshooting
3-8
Procedure
Letter
H
I
Component Test
MONITOR 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. Before performing this test, make sure that the secondary interlock switch and the primary
interlock relay are operating properly, according to the above Switch Test Procedure.
Disconnect the wire lead from the monitor switch (COM) terminal. Check the monitor switch
operation by using the ohmmeter as follows. When the door is open, the meter should
indicate a closed circuit. When the monitor switch actuator is pushed by a screwdriver
through the lower latch hole on the front plate of the oven cavity with the door opened (in
this condition the plunger of the monitor switch is pushed in), the meter should indicate an
open circuit. If improper operation is indicated, the switch may be defective. After testing the
monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the
continuity of the monitor circuit.
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.
BLOWN MONITOR FUSE 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. If the monitor fuse is blown when the door is opened, check the secondary interlock switch,
primary interlock relay (RY2), relay (RY1) and monitor switch according to the “TEST PRO-
CEDURE” for those switches before replacing the blown monitor fuse.
CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE SECONDARY
INTERLOCK SWITCH, PRIMARY INTERLOCK RELAY, DOOR SENSING
SWITCH AND MONITOR SWITCH FOR PROPER OPERATION.
If the monitor fuse is blown by improper switch operation, the monitor fuse and monitor
switch must be replaced with “monitor fuse and monitor switch assembly” part number FFS-
BA037WRKZ, even if the monitor switch operates normally. The monitor fuse and monitor
switch assembly is comprised of a 20 ampere fuse and 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.
SCREW
DRIVER
Black
White/ Gray
MONITOR
SWITCH
SECONDARY
INTERLOCK
SWITCH
OHMMETER