Sharp R-3A56 User Manual

29
R-3A56
6
45
1
2
3
6
45
1
2
3
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
Figure S-1. Pictorial Diagram (for Australia)
HIGH VOLTAGE COMPONENTS
MG:MAGNETRON
H.V. WIRE
ASYMMETRIC RECTIFIER
H.V. WIRE
POWER  TRANSFORMER
WHT
MONITOR SWITCH
WHT
WHT
1ST LATCH SWITCH
ORG
TURNTABLE  MOTOR
WHT
RED
OVEN LAMP
2ND LATCH SWITCH
GRN
STOP SWITCH
BLK
WHT
WHTWHT
WHT
GRY
GRN
GRY
BLK BLK
REDBLK
GRY
GRY
BLK
WHT
BLK
BLUWHT
RED
G–Y
+
BLKBLK
GRY1
GRN2
GRN GRN
+
4 5 2
GRY3
ORG1
B
R
N
BLK
RED
RED
THERMAL CUT-OUT
145˚ (OVEN)
THERMAL CUT-OUT
145˚ (MG)
FAN MOTOR
H.V.RECTIFIER
HIGH VOLTAGE CAPACITOR
EARTH
LIVE
FUSE M8A
THERMAL CUT-OUT
95˚ (FAN)
MONITOR RESISTOR
CN-A
CN-B
CN-B
RY3
COM
NO
CN-A
1 2
135
RY1
TRANS- FORMER
CONTROL UNIT
Positive Lock (N0-case Type)
*
CONNECTOR
NEUTRAL
+
*
*
*
*
*
*
*
*
*
*
*
*
*
*
* *
POWER SUPPLY CORD

Sharp R-3A56 Specifications

General

Cooking Levels	10
Voltage	120V
Category	Microwave Oven
Wattage	1000 Watts
Power Output	1000 Watts

Summary

Function of Important Components

Door Mechanism and Switches

Explains door opening, latch, and monitor switches.

Safety and Protection Components

Details fuses, thermal cut-outs, and resistors.

Servicing and Troubleshooting

Service Personnel Safety

Critical safety warnings and precautions for technicians.

Troubleshooting Guide

A guide for diagnosing and resolving appliance issues.

Test Procedure

Component Testing Procedures

Detailed tests for magnetron, output power, transformer, and rectifiers.

Switch and Thermal Cut-out Tests

Other Component and Circuit Tests

Tests for monitor resistor, motors, fuse, and control panel.

Touch Control Panel Assembly

Control Panel Overview and LSI Description

Servicing (General Procedures)

Handling Electronic Components

Precautions for handling sensitive electronic parts like CMOS LSI.

Touch Control Panel Servicing

General Servicing Precautions

Component Replacement and Adjustment Procedure

External Component Removal

Internal Component Removal

Door Assembly Replacement and Adjustment

Microwave Measurement

Leakage Test Requirements and Preparation

Safety standards and steps for performing leakage tests.

Pictorial Diagram

Control Panel Circuit

Control Panel Circuit Diagram

Printed Wiring Board