Troubleshooting Guide Chart - Electrolux EI30SM55JB Technical & Service Manual

Troubleshooting Guide
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.
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-BA042WRKZ as an assembly.
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, AND THEN REMOVE OUTER CASE.
2. OPEN THE DOOR AND BLOCK IT OPEN.
3. TO DISCHARGE HIGH VOLTAGE CAPACITOR, 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.
4. REMOVE THE BACK PLATE FROM THE OVEN.
5. DISCONNECT THE LEADS TO THE PRIMARY OF THE POWER TRANSFORMER.
6. ENSURE THAT LEADS REMAIN ISOLATED FROM OTHER COMPONENTS AND OVEN CHASSIS BY
USING INSULATION TAPE.
7. 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. TO DISCHARGE HIGH VOLTAGE CAPACITOR, 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.
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.
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 then 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 procedure and re-examine the connections to the component being
tested.
When all service work is completed and the oven is fully assembled, the microwave power output should be checked
and a microwave leakage test should be carried out.
Troubleshooting and Testing
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