Sharp 21HT-16C Instrukcja Obsługi

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R-21HT
R-21HV
In the interest of user-safety the oven should be restored to its original
condition and only parts identical to those 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 Recti-
fier Assembly, High Voltage Harness etc..)
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 ................................................................................................... 2
FOREWORD AND WARNING ...............................................................................................................................3
PRODUCT SPECIFICATIONS .............................................................................................................................. 4
GENERAL INFORMATION ...................................................................................................................................4
OPERATION ..........................................................................................................................................................6
TROUBLESHOOTING GUIDE .............................................................................................................................. 9
TEST PROCEDURE ............................................................................................................................................ 10
TOUCH CONTROL PANEL .................................................................................................................................18
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 25
PICTORIAL DIAGRAM ........................................................................................................................................32
CONTROL PANEL CIRCUIT .............................................................................................................................. 33
PRINTED WIRING BOARD .................................................................................................................................35
PARTS LIST ........................................................................................................................................................ 36
PACKING AND ACCESSORIES .........................................................................................................................41
S7814R21HTP//
R-21HT
R-21HV
LIGHT DUTY
COMMERCIAL
MICROWAVE OVENS
MODEL
SERVICE MANUAL
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
R-21HV
1000W/ R-21HV
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Podsumowanie treści

Strona 1 - SERVICE MANUAL

R-21HTR-21HVIn the interest of user-safety the oven should be restored to its originalcondition and only parts identical to those specified should be

Strona 2 - BEFORE SERVICING

R-21HTR-21HV8DESCRIPTION AND FUNCTION OF COMPONENTSDOOR OPEN MECHANISMThe door is opened by grasping the door handle, refer toFigure D-1.When the door

Strona 3 - WARNING TO SERVICE PERSONNEL

R-21HTR-21HV9TROUBLESHOOTING GUIDENever touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.When t

Strona 4

R-21HTR-21HV10TEST PROCEDURECONDITION PROBLEMPOSSIBLE CASEAND DEFECTIVE PARTSHome fuse or circuit breaker blows when power cord is plugged into wall

Strona 5 - SERVICE MANUAL

R-21HTR-21HV11B POWER TRANSFORMER TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block it open.3. Discharge

Strona 6 - GENERAL INFORMATION

R-21HTR-21HV12TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block i

Strona 7 - TOUCH CONTROL PANEL

R-21HTR-21HV13TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block i

Strona 8 - OPERATION

R-21HTR-21HV14H BLOWN MONITOR FUSE TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2.

Strona 9

R-21HTR-21HV15TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST7) Reconnect the power supply cord after the outer case is installed.8) Run the oven and che

Strona 10

R-21HTR-21HV16K RELAY TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door

Strona 11 - TROUBLESHOOTING GUIDE

R-21HTR-21HV176) Reconnect all leads removed from components during testing.7) Re-install the outer case (cabinet).8) Reconnect the power supply cord

Strona 12 - CONDITION PROBLEM

R-21HTR-21HVPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or allow th

Strona 13

R-21HTR-21HV18This model has 20 Memory pads.When the oven is shipped, Memory pad 1 to 10 areset as follows: fig.1.Memory No. Cook Time Output Power1 1

Strona 14

R-21HTR-21HV191 VCC IN Power source voltage: +5V.VC voltage of power source circuit input.2/3VEE/AVSSIN Connected to GND4 VREF IN Connected to VC. (+5

Strona 15

R-21HTR-21HV2022-24 P44-P42 OUT Digit selection signal.Signal similar to P45.25 INT1 IN Signal synchronized with commercial power source frequency.Thi

Strona 16

R-21HTR-21HV2161 P33 OUT Key strobe signal.Signal applied to touch-key section. A pulse signal is input to P27, P26, P25 and P24terminals while one of

Strona 17 - DEFROST

R-21HTR-21HV22approx. 1M ohmECBICKIA7805P1321TransistorDTA123ESDTB143ESDTC143ESDTD143ESTOUCH CONTROL PANEL SERVICING4) Re-install the outer case (cabi

Strona 18

R-21HTR-21HV23PROCEDURE FOR CHECKING/CLEARINGSERVICE COUNTS OF MICROWAVE OVENThe following procedure enables the servicer to obtain thetotal using tim

Strona 19

R-21HTR-21HV242) To check the constants of Express defrost." ": Flicker / : 0.1 sec BUZZERPAD DISPLAY INDICATOR PHONE.CHECK . "No

Strona 20 - TOUCH CONTROL PANEL ASSEMBLY

R-21HTR-21HV25To remove the outer case, proceed as follows.1. Disconnect the power supply cord.2. Open the oven door and block it open.3. Remove the f

Strona 21 - 16.7 msec

R-21HTR-21HV26POWER TRANSFORMER REMOVAL6. Disconnect the main wire harness from the powertransformer.7. Remove the two (2) screws holding the transfo

Strona 22

R-21HTR-21HV27COOLING FAN MOTOR REMOVALPOSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVALFigure C-2. Positive lock® connector1. Disconnect the power su

Strona 23 - 2-2 Memory IC (IC2)

R-21HTR-21HV1WARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing

Strona 24 - TOUCH CONTROL PANEL SERVICING

R-21HTR-21HV284. Install the fan blade to the shaft of fan motor by pushingthe fan blade with a small, light weight, ball peen hammeror rubber mallet.

Strona 25

R-21HTR-21HV29CHOKE COVER1. Disconnect the power supply cord.2. Open the door slightly.3. Insert a putty knife (thickness of about 0.5mm) into thegap

Strona 26 - (memory 1 count 100 set)

R-21HTR-21HV30Figure C-6. Door Disassembly7. Release two (2) pins of door panel from two (2) holes ofupper and lower oven hinges by lifting up.8. Now,

Strona 27 - WARNING FOR WIRING

R-21HTR-21HV311. Disconnect the power supply cord.2. Open the door and block it open.3. Make sure that the smooth surface of the ceramic shelfface up.

Strona 28 - MAGNETRON REMOVAL

R-21HTR-21HV32645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramGRYORGTHERMAL CUT-OUT125˚C(OVEN)OVEN LAMP & SOCKETTHERMALCUT-OUT145°C(

Strona 29 - ANTENNA MOTOR REMOVAL

R-21HTR-21HV33645123645123ABCDEFGHABCDEFGHFigure S-2a. Control Panel Circuit (R-21HT)+–+–+–+––+A3A5A7NONOCOMCOMB1 B2G12G11G10G9G1 G2 G3 G4 G5 G6 G7 G8

Strona 30 - POWER SUPPLY CORD REPLACEMENT

R-21HTR-21HV34645123645123ABCDEFGHABCDEFGHFigure S-2b. Control Panel Circuit (R-21HV)+–+–+–+––+A3A5A7NONOCOMCOMB1 B2G12G11G10G9G1 G2 G3 G4 G5 G6 G7 G8

Strona 31 - DOOR PARTS REMOVAL

R-21HTR-21HV35645123645123ABCDEFGHABCDEFGHFigure S-3. Printed Wiring Board113FR30R83(C83)R82(C82)R81(C81)R80R58R57R56R55R54R53R52R51R50(R91)(R90)(R89)

Strona 32 - Choke Cover

R-21HTR-21HV36***∆*PARTS LISTNote: The parts marked “∆” may cause undue microwave exposure.The parts marked “*” are used in voltage more than 250V.REF

Strona 33 - INSTALLATION OF CERAMIC SHELF

R-21HTR-21HV37∆∆∆∆∆∆REF. NO. PART NO. DESCRIPTION Q'TY CODER80-88 VRD-B12EF472J Resistor 4.7 ohm 1/4W 9 AARY2 RRLY-A101DRE0 Relay (VRB12) 1

Strona 34 - HIGH VOLTAGE COMPONENTS

R-21HTR-21HV2MICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiation

Strona 35

R-21HTR-21HV38HOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please furnish the following information.1. MODEL NUMBER

Strona 36

R-21HTR-21HV39645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS7-37-37-121-136-41-17-74-154-151-84-197-74-337-47-17-17-41-111-154-34-44-51-31-57-54-3

Strona 37

R-21HTR-21HV40645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTSDOOR PARTSMISCELLANEOUS3-2-23-33-2-33-2-13-23-13-43-43-43-4Actual wire harness may be di

Strona 38 - PARTS LIST

R-21HTR-21HV41PACKING AND ACCESSORIESINSTRUCTION BOOKTOP PAD ASSEMBLY (FPADBA385WRK0)BOTTOM PAD ASSEMBLY (FPADBA386WRK0)WRAP COVER (SSAKHA034WRE0)

Strona 39

R-21HTR-21HV42'98 SHARP CORP. (7S2.530E) Printed in U.S.ACOPYRIGHT © 1998 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may

Strona 40

R-21HTR-21HV3SHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SERVICE MANUALLIGHT DUTYCOMMERCIALMICROWAVE OVENR-21HT/ R-21HVFOREW

Strona 41 - OVEN AND CABINET PARTS

R-21HTR-21HV4ITEM DESCRIPTIONPower Requirements 120 Volts14 Amperes60 Hertz / Single phase, 3 wire groundedPower Output 1000 watts (IEC 705 Test Proce

Strona 42 - MISCELLANEOUS

R-21HTR-21HV53-Pronged PlugGroundedReceptacle BoxGrounding Pin3-Pronged ReceptacleOVEN DIAGRAM1. Back splash cover2. Side splash cover3. Oven light4.

Strona 43 - PACKING AND ACCESSORIES

R-21HTR-21HV6OPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITIONClosing

Strona 44

R-21HTR-21HV7SCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED.2. SELECTATIME PAD TOUCHED.3. COOKING TIME ENTERED.4. START PAD TOUCHED.Figure O-2 Oven Sc

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