Sharp KB-3411JS - User Manual

To Next Page

KB-3411JS

KB-3411JK

KB-3411JW

This is a supplemental Service Manual and is quite similar to the base models KB-3300JS/JK/JW; (S74R243KB330J). This

supplemental manual must be used in conjunction with the base model service manual for complete operation, service, safety

and replacement parts information.

WARNING TO SERVICE PERSONNEL:

This service manual is intended for use by persons having electrical and mechanical training and a level of

knowledge of these subjects generally considered acceptable in the appliance repair trade. Sharp Electronics

Corporation cannot be responsible, nor assume any liability, for injury or damage of any kind arising from the

use of this manual.

Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with the following

parts may result in a severe, possibly fatal, electrical shock. (High Voltage Capacitor, High Voltage Power

Transformer, High Voltage Rectifier and Heat sink etc., and Magnetron, High Voltage Harness etc..)

S25R247KB341J

KB-3411JS

KB-3411JK

KB-3411JW

FREE STANDING RANGE

WITH MICROWAVE DRAWER

MODELS

SUPPLEMENTAL SERVICE MANUAL

TABLE OF CONTENTS

Page

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO

AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ................... INSIDE FRONT COVER

BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER

WARNING TO SERVICE PERSONNEL ............................................................................................................... 1

MICROWAVE MEASUREMENT PROCEDURE .....................................................................................................3

FOREWORD AND WARNING ................................................................................................................................5

PRODUCT SPECIFICATIONS ............................................................................................................................... 6

POWER CONNECTION .........................................................................................................................................8

ANTI-TIP DEVICE ...............................................................................................................................................10

CONTROL LAYOUT ............................................................................................................................................ 11

SCHEMATICS ..................................................................................................................................................... 12

TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................. 16

OVEN/MICROWAVE DRAWER DISASSEMBLY .................................................................................................21

WIRING DIAGRAMS ........................................................................................................................................... 33

PRINTED WIRING BOARDS ...............................................................................................................................39

PARTS LIST ........................................................................................................................................................ 44

PACKING AND ACCESSORIES ......................................................................................................................... 55

This document has been published to be used for after sales service only. The contents are subject to change without notice.

SHARP ELECTRONICS CORPORATION

KB-3411JS pictured

Main Page

Need help?

Do you have a question about the Sharp KB-3411JS and is the answer not in the manual?

This document is a supplemental service manual for the SHARP Free Standing Range with Microwave Drawer, specifically for models KB-3411JS, KB-3411JK, and KB-3411JW. It is designed to be used in conjunction with the base model service manual (S74R243KB330J) for comprehensive information on operation, service, safety, and replacement parts.

Function Description:

The device is a combination appliance featuring a free-standing range with a built-in microwave drawer. It offers both conventional oven cooking and microwave cooking capabilities, along with a cooktop. The microwave drawer provides a convenient and accessible way to heat or cook food using microwave energy. The control system is a touch-based interface, allowing for precise control over various cooking functions.

Important Technical Specifications:

Oven Specifications:

Power Requirements: 120/208 - 120/240 Volts / 46/50 Amperes, 60 Hertz, Single phase, 3 wire grounded.
Thermal Oven Heating Elements: Top - 3000W, Bottom - 2000W.
Case Dimensions: Width 29-7/8", Height 37-5/16", Depth 27-5/16".
Cooking Cavity Dimensions: Width 22-5/8", Height 15-13/16", Depth 18".
Cubic Feet: 3.8 Cubic Feet.
Cook Top Heating Elements: Two 6" - 1200W, One 8" - 2000W, One 6"/9" - 1200/2400W.
Control Complement: Touch Control System with Clock (1:00 - 12:59), Timer (0 - 99 min. 99 seconds). Includes pads for Bake, Broil, Self Clean, Timed Cook, Number selection, Delay Start, Stop/Clear, Oven Light, Control Lock, Setup/Custom Help, Cooktop warm, Set/off, On, Control lock/on off, Convection, Timer/Hold to Clear, and 3 min Plus.
Oven Cavity Light: 40W x 1.
Safety Standard: UL Listed.
Weight: Approx. 260 lbs.

Microwave Drawer Specifications:

Power Output: 1000 watts (IEC TEST PROCEDURE).
Operating Frequency: 2450MHz.
Cooking Cavity Dimensions: Width 17-11/32", Height 5-7/16", Depth 17-1/8".
Control Complement: Touch Control System with Clock (1:00 - 12:59), Timer (0 - 99 min. 99 seconds). Includes pads for START/MINUTE PLUS, Defrost, Number selection, Micro-warm/Power Level, Timer/Clock, Stop/Clear, Sensor Reheat, Sensor Popcorn, Sensor Cook, Open pad, Close pad, Setup/Custom Help.
Microwave Power for Variable Cooking (Repetition Rate):
- P-100: 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.
Oven Cavity Light: Yes.
Safety Standard: UL Listed, FCC Authorized, DHHS Rules, CFR, Title 21, Chapter 1, Subchapter J.

Usage Features:

The appliance offers a wide range of cooking options through its touch control panel. Users can select various oven functions like Bake, Broil, Convection, and Self Clean, as well as timed cooking. The cooktop features multiple radiant heating elements with different power outputs for diverse cooking needs. The microwave drawer provides convenient access and a variety of microwave cooking modes, including sensor reheat and popcorn functions, and defrost. The "Minute Plus" feature allows for quick additions to cooking time. A "Control Lock" function is available for safety.

Maintenance Features:

The manual provides detailed instructions for servicing, emphasizing safety precautions due to high voltage and microwave energy.

Safety Checks: Before activating the magnetron or other microwave source, safety checks are required, including interlock operation, proper door closing, seal integrity, and damage assessment.
Microwave Emission Check: A microwave emission check is mandatory before and after servicing to ensure compliance with Federal Performance Standards. If emissions exceed 4mW/cm², Sharp Electronics Corporation must be contacted.
High Voltage Capacitor Discharge: Service personnel are warned to discharge the high voltage capacitor by waiting 60 seconds after power disconnection before touching internal components.
Lead-Free Solder: The "Main PWB" uses lead-free solder (Sn-Ag-Cu), indicated by an "LF" symbol. Only lead-free solder should be used for repairs, and specific soldering techniques are recommended due to its higher melting point and poorer wettability.
Disassembly Procedures: Detailed steps are provided for disassembling various components, including the control panel, oven/microwave drawer, cooktop, oven door, bake and broil elements, thermistor, blower motor, lock motor, convection motor/impeller blade, and cooktop radiant heaters/hot surface indicators.
Switch and Actuator Adjustment: Instructions are given for the removal and adjustment of switch angles and actuators to ensure proper operation of the microwave drawer and its safety interlocks. Correct adjustment is critical for the performance of the Auto Drawer.
Wiring Diagrams: Comprehensive wiring diagrams are included for the cooktop, microwave drawer, and range power supply, aiding in troubleshooting and repair.
Parts Lists: Extensive parts lists are provided for the control panel, cooktop, microwave drawer, oven unit, oven door, and packing components, with indications for parts that may cause undue microwave exposure or are used in voltages over 250V.
Grounding Instructions: Specific instructions for 3-wire and 4-wire power connections and grounding are provided to ensure electrical safety.
Anti-Tip Device: Installation and checking procedures for the anti-tip device are included to prevent the range from tipping.

Sharp KB-3411JS Specifications

General

Brand	Sharp
Model	KB-3411JS
Category	Freestanding ranges
Language	English