Sharp R-1506, R-1500, R-1505, R-1501 Touch Control Panel Assembly, Description of LSI, Lsi

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R-1500

R-1501

R-1505

R-1506

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

The touch control section consists of the following units as shown in the touch control panel circuit.

(1)Key Unit

(2)Control Unit (The Control unit consists of LSI Unit and Power U nit)

The principal functions of these units and the signals com- municated among them are explained below.

Key Unit

The key unit is composed of a matrix, signals generated in the LSI are sent to the key unit through P20, P21, P22, P23, P24, P25, P26 and P27.

When a key pad is touched, a signal is completed through the key unit and passed back to the LSI through P43, P44, P45 and P46 to perform the function that was requested.

Control Unit

Control unit consists of LSI, power source circuit, synchro- nizing signal circuit, ACL circuit, buzzer circuit, relay circuit indicator circuit and back light circuit.

1)LSI

This LSI controls the key strobe signal, relay driving signal for oven function and indicator signal.

2)Power Source Circuit

This circuit generates voltages necessary for the control unit from the AC line voltage.

In addition, the synchronizing signal is available in order to compose a basic standard time in the clock circuit.

Symbol Voltage Application

VC -5.3V LSI(IC1)

3)Synchronizing Signal Circuit

The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit. It incorporates a very small error because it works on commercial frequency.

4)ACL Circuit

A circuit to generate a signals which resetting the LSI to the initial state when power is applied.

5)Buzzer Circuit

The buzzer is responds to signals from the LSI to emit audible sounds (key touch sound and completion sound).

6)Door Sensing Switch

A switch to inform the LSI if the door is open or closed.

7)Relay Circuit

To drive the magnetron, fan motor, turntable motor, hood motor, and light the oven lamp and hood lamp.

8)Indicator Circuit

This circuit consists of 22 segments and 3 common electrodes using a Light Crystal Display.

9)Back Light Circuit

A circuit to drive the back light (Light emitting diodes LD1- LD4).

DESCRIPTION OF LSI

LSI

The I/O signal of the LSI is detailed in the following table.

Pin No.

Signal

I/O

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1-2

VL2-VL1

IN

Power source voltage input terminal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standard voltage for LCD.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3-6

AN7-AN4

IN

Terminal to change cooking input according to the Model.

 

 

 

By using the A/D converter contained in the LSI, DC voltage in accordance with the Model

 

 

 

in operation is applied to set up its cooking constant.

7

AN3

OUT

Back light circuit (Light emitting diodes) driving signal.

8

AN2

IN

To input signal which communicates the door open/close information to LSI.

 

 

 

Door close "H" level signal (0V). Door open "L" level signal (-5V).

9-10

AN1-AN0

OUT

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

11-13

P57-P55

OUT

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

14

CNTR0

OUT

Signal to sound buzzer (2.0 kHz).

 

 

0.1 sec.

 

 

 

A: key touch sound.

 

 

 

 

 

 

 

 

 

 

 

 

H : GND

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

B: Completion sound.

 

 

 

 

 

 

 

 

 

 

 

 

L : -5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.0 sec.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H : GND

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L : -5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

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Contents 1506 Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedLeakage test Microwave Measurement ProcedureRequirements Foreword Sharp PLAZA, MahwahOver the Range Microwave Oven 1500/ R-1501/ R-1505/ R-1506Grounding Instructions Product SpecificationGeneral Information DescriptionOven Diagram Light HI/ LO FAN HI/ LO Stop Clear Start Minute Plus Control PanelLevel OFF Condition Power Level P-0 to P-90 CookingOperation Description of Operating SequenceHorizontal Venting Ventilation Methods HOT AIR ExhaustVertical Venting AIR FlowFigure O-1. Oven Schematic-Off Condition Description and Function of Components Hood Lamp Troubleshooting GuideHood FAN Motor Possible Case Defective Parts Test Procedure ProblemPower Transformer Test Test ProceduresProcedure Letter Component Test Magnetron Assembly Test Microwave Output PowerHigh Voltage Capacitor Test Procedure Letter Component TestMagnetron Temperature Fuse Test High Voltage Rectifier TestSecondary Interlock Relay RY2 Primary Interlock Switch TestSecondary Interlock System Test Door Sensing Switch Monitor Switch TestHood FAN Motor Test Procedure Component Test LetterBlown Monitor Fuse Test Hood Thermal CUT-OUT TestWHT 3 Touch Control Panel Assembly TestBefore testing KEY Unit Test 1ST Stage 2ND Stage Procedure Letter Component Test Relay TestFoil Pattern on the Printed Wiring Board Test Defrost Center TestSteps Occurrence Cause or Correction QKITPB035LSI Touch Control Panel AssemblyDescription of LSI OUT Key strobe signal OUT Oven lamp, fan motor and turntable motor driving signalSignal synchronized with commercial power source frequency Internal clock oscillation frequency input settingHood motor driving signal Key strobe signalHood lamp driving signal Hood motor high / low driving signalServicing of Touch Control Panel Other PrecautionsServicing Shapes of Electronic ComponentsHood Exhaust Louver Removal Component Replacement and Adjustment ProcedureOuter Case Removal Power Transformer RemovalRe-install Pictorial DiagramThermal CUT-OUT Cavity Removal Magnetron RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Hood FAN Thermal CUT-OUT RemovalCooling FAN Motor Removal Temperature Fuse Magnetron RemovalTurntable Motor and Food Lamp Sockets Removal Positive Lock Connector NO-CASE Type RemovalControl Panel ASSEMBLY, Control Unit and KEY Unit Removal Positive lock connectorControl Unit and KEY Unit Removal Key unit locationDoor Assembly RE-INSTALL Door ReplacementAfter adjustment, check the following Door Assembly RemovalChoke Cover Door DisassemblyReplacement Door Frame AssemblyHigh Voltage Components Control UnitFigure S-2. Power Unit Circuit Unit CircuitDIP Cabinet Parts Parts ListParts marked * are used in voltage more than Electric PartsMiscellaneous Oven PartsDoor Parts Model Number HOW to Order Replacement PartsPacking and Accessories SCREWS,NUTS and WashersOven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Copyright 2001 by Sharp Corporation ALL Rights Reserved
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Manual 40 pages 37.06 Kb

R-1506, R-1501, R-1505, R-1500 specifications

The Sharp R-1500, R-1505, R-1501, and R-1506 are part of Sharp's extensive line of microwave ovens, showcasing advanced cooking technologies and user-friendly features that cater to the modern kitchen. These models are designed to provide convenience and efficiency while delivering consistent cooking results.

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