Sharp R-420BW Manuals

Manuals and User Guides for Sharp R-420BW. We have 1 Sharp R-420BW manual available for free PDF download: Service Manual

Sharp R-420BW Service Manual

Sharp R-420BW Service Manual (49 pages)

Brand: Sharp | Category: Microwave Oven | Size: 3 MB

Table of Contents

Troubleshooting
3
Wiring / Schematic Diagram
3
Warning to Service Personnel
4
Before Servicing
4
After Repairing
4
Specifications
5
Off Condition
8
Cooking Condition
8
Operation
8
Sensor Cooking Condition
9
Cooking Sequence
9
Troubleshooting Guide
11
Test Procedure
11
Test Procedures
13
Monitor Switch Test
15
Touch Control Panel Assembly Test
16
Relay Test
18
Foil Pattern on the Printed Wiring Board Test
18
Compu Defrost Test
20
Key Unit Test
20
Testing Method for AH Sensor And/Or Control Unit
21
Outline of Touch Control Panel
23
Control Unit
23
Description of Lsi
24
Outer Case Removal
29
Power Transformer Removal
29
High Voltage Rectifier and High Voltage Capacitor Removal
29
Magnetron Removal
29
Component Replacement / Adjustment Procedure
30
Cooling Fan Motor Removal
31
Door Disassembly
33
Absolute Humidity Sensor Circuit
34
Structure of Absolute Humidity Sensor
34
Operational Principle of AH Sensor
34
Detector Circuit of AH Sensor Circuit
34
Ah Sensor Duct Removal
35
Ah Sensor Replacement
35
Microwave Measurement Procedure
37
Interlock Switch Test
37
Microwave Leakage Test
37
Control Panel
44
Cavity Assembly
46

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