Sharp KB-3425LS Service Manual

Also see for Insight KB-4425LK: Installation manual Installation manual

Contents

KB-3425LS/K/WKB-4425LS/K/WWARNING TO SERVICE PERSONNEL:This service manual is intended for use by persons having electrical and mechanical training and a level ofknowledge of these subjects generally considered acceptable in the appliance repair trade. Sharp ElectronicsCorporation cannot be responsible, nor assume any liability, for injury or damage of any kind arising from theuse of this manual.Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with thefollowing parts may result in a severe, possibly fatal, electrical shock. (High Voltage Capacitor, High VoltagePower Transformer, High Voltage Rectifier and Heat sink etc., and Magnetron, High Voltage Harness etc..)S66R264KB442LKB-3425LSKB-3425LKKB-3425LWFREE STANDING/SLIDE-IN RANGEWITH MICROWAVE DRAWERMODELSSERVICE MANUALTABLE OF CONTENTSPagePRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TOAVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY..................... INSIDE FRONT COVERBEFORE SERVICING ....................................................................................................... INSIDE FRONT COVERWARNING TO SERVICE PERSONNEL ................................................................................................................. 3MICROWAVE MEASUREMENT PROCEDURE..................................................................................................... 5FOREWORD AND WARNING ............................................................................................................................... 7PRODUCT SPECIFICATIONS ............................................................................................................................... 8POWER CONNECTION ....................................................................................................................................... 0ANTI-TIP DEVICE ................................................................................................................................................ 2CONTROL LAYOUT ............................................................................................................................................. 3SCHEMATICS ...................................................................................................................................................... 4TEST PROCEDURES .......................................................................................................................................... 8TOUCH CONTROL PANEL ASSEMBLY .............................................................................................................. 29OVEN/MICROWAVE DRAWER DISASSEMBLY .................................................................................................. 40WIRING DIAGRAMS ............................................................................................................................................ 52PRINTED WIRING BOARDS ............................................................................................................................... 58PARTS LIST ......................................................................................................................................................... 63PACKING AND ACCESSORIES .......................................................................................................................... 74This document has been published to be used for after sales service only. The contents are subject to change without notice.SHARP ELECTRONICS CORPORATIONKB-4425LW picturedKB-4425LSKB-4425LKKB-4425LW