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R-402JW-T
Sharp R-402JW-T User Manual
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R402JWT
5 – 2
2. TOUCH CONTROL P
ANEL
NOTE:
Some one-touch cooking features such as “MINUT
E PLUS” are disabled after three minutes when the oven is not in u
se. These fea-
tures are automatically enabled when
the door is opened and clo
sed or the STOP/ CLEAR pad is pressed.
8
10
Table of Contents
Default Chapter
1
Microwave Oven
1
Table of Contents
2
Precautions to be Observed before and During Servicing to Avoid Possible Expo
3
After Repairing
4
Before Servicing
4
When the Testing Is Completed
4
Before Servicing
3
Exposure to Excessive Microwave Energy
3
Chapter 2. Microwave Measurement Pro
5
Requirements
5
CEDURE 1] Requirements:
5
Preparation for Testing
5
Leakage Test
5
Chapter 1 Warning
6
Danger
6
Chapter 3. Foreword and Warning
6
Foreword
6
Chapter 4. Product Description
7
Specifications
7
Chapter 5. General Information
8
Grounding Instructions
8
Oven Diagram
8
Chapter 6. Operation Description of Operating Se- Quence
10
Operation
10
Oven Schematic
11
Description and Function of Components
12
Chapter 7. Troubleshooting Guide
13
Troubleshooting Chart
13
Procedure A: MAGNETRON ASSEMBLY TEST
14
Procedure B: POWER TRANSFORMER TEST
14
Procedure C: HIGH VOLTAGE RECTIFIER TEST
14
Procedure D: HIGH VOLTAGE CAPACITOR TEST
15
Procedure E: TEMPERATURE FUSE or THERMAL CUT-OUT TEST
15
Procedure F: PRIMARY INTERLOCK SWITCH TEST
15
Procedure F: SECONDARY INTERLOCK SYSTEM TEST
16
Procedure G: MONITOR SWITCH TEST
16
Procedure H: BLOWN MONITOR FUSE TEST
16
Procedure I: NOISE FILTER TEST
17
Procedure J: TOUCH CONTROL PANEL ASSEMBLY TEST
17
Procedure K: KEY UNIT TEST
18
Procedure L: RELAY TEST
19
Procedure M: DEFROST TEST
19
Procedure N: FOIL PATTERN on the PRINTED WIRING BOARD TEST
19
Chapter 9. Touch Control Panel Assem
21
Outline of Touch Control Panel
21
Description of Lsi
21
Servicing for Touch Control Panel
24
Chapter 10. Precautions for Using Lead-Free Solder
25
Employing Lead-Free Solder
25
Using Lead-Free Wire Solder
25
Soldering
25
Adjustment Procedure 1] Warnings
26
Chapter 11. Component Replacement and
26
Warnings
26
Outer Case Removal
27
Power Transformer Removal
27
High Voltage Rectifier and High Voltage Capacitor Removal
27
Magnetron Removal
27
Oven Lamp Removal
28
Positive Lock Connector (No-Case Type) Removal
28
Control Panel Assembly Removal
28
Graphic Sheet and Membrane Switch Replacement
28
Turntable Motor Removal
29
Cooling Fan Motor Removal
29
Door Sensing Switch/Primary Interlock Switch and Monitor Switch Removal
30
Door Sensing Switch/Primary Interlock Switch and Monitor Switch Adjustment
30
Door Replacement
30
Chapter 12. Circuit Diagrams
32
Pictorial Diagram (Figure S-1)
32
Control Panel Circuit (Figure S-2)
33
Printed Wiring Board (Figure S-3)
34
Parts List
35
4
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Sharp R-402JW-T Specifications
General
Brand
Sharp
Model
R-402JW-T
Category
Microwave Oven
Language
English
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