Electrolux EW27MO55HSA - Table of Contents

1-2
Basic Information
This Manual has been prepared to provide Electrolux Service Personnel with Operation and
Service Information for Electrolux Microwave Ovens EW27MO55HSA and EW30MO55HSA.
Table of Contents
Section 1 Basic Information
Safe Servicing Practices .......................................... 1-1
Table of Contents .................................................... 1-2
Warnings and Safety Information ............................ 1-3
Precautions To Be Observed Before And During
Servicing To Avoid Possible Exposure To
Excessive Microwave Energy .................................. 1-4
Before Servicing ...................................................... 1-4
Danger High Voltage ............................................... 1-4
Before Servicing ...................................................... 1-5
Microwave Measurement Procedure USA .............. 1-6
Microwave Measurement Procedure Canada ......... 1-7
Product Specification ............................................... 1-8
Grounding Instructions ............................................ 1-9
Oven Diagram ......................................................... 1-10
Section 2 Operation
Section 2 Operation
Operating Sequence Description ............................. 2-1
Oven Schematic-Off Condition ................................ 2-2
Oven Schematic-Cooking Condition ........................ 2-2
Variable Cooking ..................................................... 2-3
Sensor Cooking Condition ....................................... 2-3
Cooking Sequence .................................................. 2-3
Auto Defrost Cooking .............................................. 2-4
Component Descriptions ......................................... 2-4
Door Sensing and Primary Interlock Switch ............ 2-4
Monitor Switch ......................................................... 2-4
Third Door Switch .................................................... 2-4
Magnetron Thermal Switch Cut-Out ........................ 2-5
Oven Thermal Cut-Out ............................................ 2-5
Humidity Sensor Circuit ........................................... 2-5
Section 3 Troubleshooting and Testing
Warnings and Cautions ........................................... 3-1
Troubleshooting Guide Chart .................................. 3-2
Test Procedures ...................................................... 3-3
Section 4 Component Teardown
Warnings and Cautions ........................................... 4-1
Outer Case Removal ............................................... 4-2
Magnetron Removal ................................................ 4-2
Power Transformer Removal ................................... 4-2
High Voltage Rectifier Removal ............................... 4-3
High Voltage Capacitor Removal ............................ 4-3
Turntable Motor/Coupling Removal ......................... 4-3
Oven Lamp and Lamp Socket Removal .................. 4-3
Fan Motor Removal ................................................. 4-4
Power Supply Cord Replacement ........................... 4-5
Door Sensing Switch, Primary/Third Interlock
Switch and Monitor Switch Replacement ................ 4-5
Door Replacement ................................................... 4-7
Door Adjustment ...................................................... 4-8
Door Disassembly ................................................... 4-8
Control Assembly And CPU Unit Removal .............. 4-9
Section 5 Wire Diagrams
Wiring Schematic Oven Off Condition ..................... 5-1
Pictorial Diagram ..................................................... 5-2
Section 6 Parts List
Parts Listing ............................................................. 6-1
Oven And Cabinet Parts Exploded View ................. 6-3
Cabinet And Frame Parts Exploded View ............... 6-4
Control And Door Parts Exploded View ................... 6-5
Packing and Accessories Exploded View ................ 6-6