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R-202EK

SHARP ELECTRONICS CORPORATION

SHARP PLAZA, MAHWAH,

NEW JERSEY 07430-2135

SERVICE MANUAL

MICROWAVE OVEN

R-202EK

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service
Information for the SHARP MICROWAVE OVEN, R-202EK.

The model R-202EK is quite similar to base model R-202EW (Refer No. is S7116R202EPW/).

It is recommended that service personnel carefully study the entire text of this manual and the base model's manual so that
they will be qualified to render satisfactory customer service.

Check the interlock switches and the door seal carefully. Special attention should be given to avoid electrical shock and
microwave radiation hazard.

WARNING

Never operate the oven until the following points are ensured.
(A) The door is tightly closed.
(B) The door brackets and hinges are not defective.
(C) The door packing is not damaged.
(D) The door is not deformed or warped.
(E) There is no other visible damage with the oven.

Servicing and repair work must be carried out only by trained service personnel.

DANGER

Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing.
Service personnel - Do not contact the following parts while the appliance is energized;
High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly,  High Voltage
Harness;
If provided, Vent Hood, Fan assembly, Cooling Fan Motor.

All the parts marked “*” on parts list are used at voltages more than 250V.

Removal of the outer wrap gives access to voltage above 250V.

All the parts marked “

” on parts list may cause undue microwave exposure, by themselves, or when they are damaged,

loosened or removed.

Summary of Contents for R-202EK

Page 1: ...specified should be used WARNING TO SERVICE PERSONNEL Microwave ovens con tain circuitry capable of producing very high voltage and current contact with following parts may result in a severe possibly fatal electrical shock High Voltage Capacitor High Voltage Power Transformer Magnetron High Voltage Rectifier Assembly High Voltage Harness etc SHARP CORPORATION This document has been published to b...

Page 2: ...ransmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per the Microwave Mea...

Page 3: ...acitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconnec...

Page 4: ...e oven cavity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cooking Mo...

Page 5: ...il the following points are ensured A The door is tightly closed B The door brackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is no other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel DANGER Certain initial parts are intentionally not grounded and present a risk of elec...

Page 6: ... Power for Variable Cooking Repetition Rate P HI Full power throughout the cooking time P 90 approx 90 of FULL Power P 80 approx 80 of FULL Power P 70 approx 70 of FULL Power P 60 approx 60 of FULL Power P 50 approx 50 of FULL Power P 40 approx 40 of FULL Power P 30 approx 30 of FULL Power P 20 approx 20 of FULL Power P 10 approx 10 of FULL Power P 0 No power throughout the cooking time EXPRESS DE...

Page 7: ...bled when the door is opened and closed or the STOP CLEAR pad is pressed SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 CLOCK APPEARS ON DISPLAY See NOTE See NOTE See NOTE POWER TRANSFORMER RECTIFIER MAGNETRON CAPACITOR 0 82µF AC2100V C T FUSE 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR MONITOR SWITCH SECONDARY INTERLOCK SWITCH TTM OL FM GRN A3 COM DOOR SENSING SWITCH B2 B1 RY 1 RY 2 CONT...

Page 8: ...SUPPLY CORD 120V 60Hz GRD H N NOTE The grounding conductor of the power supply cord has been grounded by power supply cord fixing screw The screw must allways be kept tight NOTE The neutral WHT wire must be connected to the terminal with N mark on the power supply cord RED WHT DOOR SENSING SWITCH GRY RED POWER TRANSFORMER BLK WHT GRY CONTROL PANEL GRY ORG ORG WHT RED C T FUSE BLK SP1 RY1 PRIMARY I...

Page 9: ...2 1 GCABUA828WRPZ Outer case cabinet 1 BD 2 2 GLEGPA074WRE0 Foot 2 AC CONTROL PANEL PARTS 3 1 FPNLCB602WRKZ Control panel frame with key unit 1 BA 3 1 1 FUNTKB098WREZ Key unit 1 AW 3 2 JBTN B164WRFZ Open button 1 AK 3 3 MSPRCA050WRE0 Open button spring 1 AB 3 4 DPWBFC188WRUZ Control unit 1 BH 3 5 QCNC A014WRZZ Rubber connector 1 AE 3 6 RLCDSA097DRZZ Liquid crystal display 1 AM 3 7 XEPSD30P08XS0 Sc...

Page 10: ...ms TRAY PAD ASSY CPADBA287WRKZ PACKING CASE MICROWAVE OVEN TOP PAD ASSEMBLY FPADBA454WRKZ POLYETHYLENG BAG SSAKHA014WRE0 SPAKCD671WREZ BOTTOM PAD ASSEMBLY FPADBA455WRKZ DOOR PROTECT SHEET SPADPA580WRE0 FOAM SHEET SPAKHA014WREZ SCREWS NUTS AND WASHERS 7 1 XHPSD40P08K00 screw 4 mm x 8 mm 2 AC 7 2 XHTSD40P08RV0 Screw 4mm x 8mm 4 AA 7 3 LX CZA070WRE0 Special screw Torx tamper proof screw 2 AC 7 4 LX C...

Page 11: ...G H OVEN AND CABINET PARTS 7 10 2 1 7 10 7 10 7 3 7 3 1 8 6 4 6 3 7 8 1 3 4 11 4 3 7 6 7 5 2 2 4 7 4 10 4 2 7 11 6 1 6 2 7 2 7 10 7 10 7 9 7 9 1 6 1 11 7 1 4 5 1 2 7 10 4 13 7 2 7 10 7 1 1 5 1 1 1 2 1 1 1 9 1 4 4 1 7 2 2 2 4 6 1 7 1 10 4 9 4 12 4 8 4 4 7 7 7 4 4 9 ...

Page 12: ...ctronic mechanical photocopying recording orotherwise withoutprior written permission of the publisher 6 4 5 1 2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H MISCELLANEOUS CONTROL PANEL PARTS DOOR PARTS 5 2 6 6 5 5 5 3 5 4 5 6 5 7 5 1 Actual wire harness may be different than illustration 3 2 3 1 1 3 1 3 6 3 7 3 4 3 5 3 3 Before attaching Control unit to Control panel foil side of Control unit mu...

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