Sharp R-771 OE - Table of Contents; Test Procedures; Power Transformer Test; Short Protector Test

TABLE OF CONTENTS
Page
FOREWORD..
..................................................................
1
CAUTION, MICROWAVE RADIATION
.................................................
1
CHAPTER I PRODUCT DESCRIPTION.
................................................
4
Explanation of Microwave Cooking.
.................................................
4
Specifications
................................................................ 4
CHAPTER II OPERATION ..........................................................
5
Normal Cooking Sequence
.......................................................
5
Description of Operating Sequence.
.................................................
5
OffCondition ............................................................
5
IdleCondition ...........................................................
5
CookingCondition.. ......................................................
5
High Condition.
......................................................
5
Med. LOW (Defrost) Med., Med. High and Low Condition
...........................
5
Description and Function of Components
... 1
.........................................
9
Variable Cooking Control. ...................................................
9
Timer .................................................................
9
Door Open Mechanism. .....................................................
.10
Upper and Lower Latch Switches. ..............................................
10
Monitor Switch.
..........................................................
10
CHAPTER III SERVICING..........................................................l 1
Troubleshooting Guide.
.........................................................
11
OffCondition............................................................l 1
IdleCondition..
.......................................................
..I 1
CookingCondition..
....................................................
..ll
Test Procedures.
.............................................................
.13
Magnetron Assembly Test.
..................................................
.13
Power Transformer Test ....................................................
.14
RectifierTest............................................................l 4
High Voltage Capacitor Test
.................................................
.14
Short Protector Test
......................................................
.14
FanMotorTest...........................................................l 5
TimerTest..............................................................l 5
Magnetron Therm0 Cut-out Test
.............................................. .15
Upper Latch Switch Test
................................................... .15
Lower Latch Switch Test ...................................................
.15
Vari-switch Test
......................................................... .15
Vari-motor Test
......................................................... .15
Monitor Switch Test
.......................................................
.16
CHAPTER IV COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURES
................
.16
Warning....................................................................l 6
OuterCaseRemoval............................................................l 6
High Voltage’Components Removal ................................................
.17
Power Transformer Removal ...................................................
: . .17
OvenLampRemoval...........................................................l 7
Turntable Motor Removal.
......................................................
.18
Turntable Roller Removal.
......................................................
.18
FanMotorRemoval............................................................l 8
Magnetron Assembly Removal.
...................................................
.18
Upper Latch Switch and Monitor Switch Removal.
......................................
.19
Lower Latch Switch Removal
....................................................
-19
Control Panel Assembly and Components Removal
...................................... .20
Vari-motor Assembly.
.....................................................
.20
Timer.................................................................2 0
CookSwitch.............................................................2 0
2