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Microwave Oven
R-8320E
Sharp R-8320E User Manual
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6.
1
BUZZER DOES
NOT SOUND
Is normal
waveform
(2.5KHz)
applied across pin No. 1 and 5
of relay unit connector
(DI
?
Ye
s
No
]No
Is normal
waveform
(2.5KHzI
applied across pin No. 42
(D,
1
of
LSI
(l-2)
and “GND”?
Yes
>
Replace
Buzzer
(St’1
1
l
Defective
050
0
Wrong constant of
R51, R52 & R53
l
Poor soldering
94
94
96
Table of Contents
Foreword
2
Table of Contents
3
Chapteri Product Description
6
Explanation of Microwave Cooking and Convection Cooking
6
Specifications
6
Operating Instructions
7
Chapter II Operating Instructions
7
Auto-Touchtm Control Panel
8
Auto-Touchtm Operation Check
9
Operation for Clock Setting
10
Operation for Microwave Cooking
11
Accessories
14
Convectionheating
14
Introduction to Convection Cooking
14
Convection Broiling
15
Mixcooking
16
Mixroasting
16
Mixbaking
17
Operation for Convection Cooking
18
Operation for MIX Cooking
22
Operation for Special Function Cooking
25
Operation for Auto Start Cooking
28
Operation for Memory Cooking
30
CHAPTER Ill OPERATION
32
Normal Cooking Sequence
32
Description of Operating Sequence (Australia Model)
32
Microwave Cooking Condition
32
Offcondition
32
1. High Cooking
33
Medium High, Medium or Medium Low/Defrost Cooking
33
Convection Cooking Condition
34
Preheating Condition
34
Automatic MIX Cooking Condition
35
Description of Operating Sequence (South Africa Model)
39
1. High Cooking
39
Medium High. Medium or Medium Low/Defrost Cooking
39
Microwave Cooking Condition
39
Offcondition
39
Convection Cooking Condition
40
Preheating Condition
40
I Convection Cooking Condition
40
Automatic MIX Cooking Condition
41
Description and Function of Components
45
Cookrelay
45
Cooling Fan Motor
45
Door Open Mechanism
45
Heaterrelay
45
Stopswitch
45
Thermistor
45
Turntable Motor
45
Convection Cooking System
46
Heatingelement
46
Upper and Lower Latch Switches
46
Magnetrontube
47
Monitor Switch (Australia Model)
47
Powertransformer
47
Voltage Doubler Circuit
47
Damper Operation
48
Relayunit
49
Chapter IV Servicing 5
52
Troubleshooting Guide
52
Off Condition
52
Microwave Cooking Condition
53
Convection Cooking Condition
54
Test Procedures
55
Magnetron Assembly Test
55
Power Transformer Test
56
Rectifiertest
56
High Voltage Capacitor Test
57
Upper Latch Switch Test
57
Lower Latch Switch Test
57
Monitorswitchtest
57
Blownfuse
58
Magnetron Therm0 Cut-Out Test
58
Cook Relay or Heater Relay Test
58
Stopswitchtest
58
Touch Control Panel Assembly Test
58
Heating Element Test
59
Thermistortest
59
Damper Motor Test
59
Damper Switch Test
59
Relayunittest
60
Servicing
52
Touch Control Panel Assembly
61
Outline of Touch Control Panel
61
Keyunit
61
Controlunit
63
Description of LSI
64
LSI (L-L: IX2075YA)
68
Power Source Circuit
76
Circuit 7
76
Aclcircuit
77
Buzzercircuit
77
Thermistor Sensor Circuit
78
Indicator Circuit
79
Servicing
80
Checker
81
Useofchecker
81
Connection Method
81
External of Checker
82
Checker Circuit Diagram
83
Testprogram
84
Troubleshooting Guide
88
Adjustment of Thermistor Sensor Circuit
98
Warning
99
Outer Case Removal
100
High Voltage Components Removal
100
Relay Unit, Cook Relay or Heater Relay Removal
100
Turntable Motor Removal
101
Magnetron Assembly Removal
101
Cooling Fan Motor Removal
101
Damper Motor and Damper Switch Removal
106
Heating Element or Convection Fan Removal
106
Oven Lampremoval
107
Upper Latch Switch and Monitor Switch (Australia Model) Removal
107
Lower Latch Switch Removal
107
Control Panel Assembly and Components Removal
109
Door Replacement and Adjustment
111
Schematic Diagram
113
(Australia Model)
113
Packing and Accessories
123
Control Panel Parts
126
4
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Sharp R-8320E Specifications
General
Brand
Sharp
Model
R-8320E
Category
Microwave Oven
Language
English
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