Service manual

ManualsBrandsSharp ManualsDomestic AppliancesXD250

R-1610

R-1611

R-1612

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 the following parts may result in a

severe, possibly fatal, electrical shock. (High Voltage Capaci-

tor, High Voltage Power Transformer, Magnetron, High Volt-

age Rectifier 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 .............................................................................................................................. 8

TEST PROCEDURE ..............................................................................................................................................9

TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................ 11

CONPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 14

PICTORIAL DIAGRAM ........................................................................................................................................16

POWER UNIT CIRCUIT ...................................................................................................................................... 17

LSI UNIT CIRCUIT............................................................................................................................................... 18

INDICATOR CIRCUIT .......................................................................................................................................... 19

PARTS LIST ........................................................................................................................................................ 20

PACKING AND ACCESSORIES .........................................................................................................................25

S5911R1610X//

R-1610

R-1611

R-1612

MODELS

SUPPLEMENTAL 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.

This is a supplemental Service Manual for Models R-1610, R-1611 and R-1612. These models are quite similar to

base model R-1600,R-1601 and R-1602. Use this supplemental manual together with the Base Models Service

Manual (Reference No. is S4910R1160X//) for complete operation, service information, etc..

OVER THE RANGE

MICROWAVE OVEN

SENSOR DEFROST TURNTABLE COOK

OFF

HELP

12345

67890

Rice Poultry

Popcorn

Fish/

seafood

Ground

meat

Lunch on

the Run

One Dish

Dinners

Breakfast

Bar

Compu

Defrost

Beverage

Center

Super

Defrost

Fresh

vegetables

Turntable

On/Off

Kitchen Timer

Clock

Stop

Clear

START

Touch On

Memory

Cook

Power

Level

Minute

Plus

Work

Light

Night

Light

Fan

Hi/Lo

Auto

Fan

Frozen

entrees



Frozen

snacks



Frozen

vegetables

Custom 

Help

Baked

potato

Sensor

reheat

S e n s o r C o o k i n g

Summary of content (28 pages)

PAGE 1
R-1610 R-1611 R-1612 SUPPLEMENTAL SERVICE MANUAL S5911R1610X// OVER THE RANGE MICROWAVE OVEN MODELS TURNTABLE SENSOR DEFROST HELP OFF COOK Sensor Cooking Popcorn Fresh vegetables Ground meat Sensor reheat Frozen entrees Baked potato Frozen snacks Custom Help Frozen vegetables Rice Poultry Fish/ seafood More from your Microwave Breakfast Bar Lunch on the Run Super Defrost Compu Defrost 1 6 Turntable On/Off Memory Cook Kitchen Timer Clock Work Light 3 8 2 7 One Dish Dinners Beverage Center
PAGE 2
R-1610 R-1611 R-1612 PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.
PAGE 3
R-1610 R-1611 R-1612 WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. Read the Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage When the testing is completed, 1.
PAGE 4
R-1610 R-1611 R-1612 MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm2 at any point 5cm or more from the external surface of the oven.
PAGE 5
R-1610 R-1611 R-1612 SERVICE MANUAL OVER THE RANGE MICROWAVE OVEN R-1610/ R-1611/1612 FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP OVER THE RANGE MICROWAVE OVEN, R-1610/ R-1611/ R1612. The models R-1610, R-1611 and R-1612 are quite similar to base models R-1600, R-1601 and R-1602 (Reference No. is S3910R1600X//).
PAGE 6
R-1610 R-1611 R-1612 PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 14 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 1.6 Cubic Feet 1000 watts (IEC-705 TEST PROCEDURE) Operating frequency of 2450MHz Width 29-15/16" Height 16-3/8" Depth 15- 1/16" (Not including the door handle) Width 21" Height 8-7/8" Depth 14-7/16" Hood lamp Hood fan 2 bulbs, 20W x 2, Incandescent light bulbs Approx. 300 C.F.M.
PAGE 7
R-1610 R-1611 R-1612 GENERAL INFORMATION GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle that is properly installed and grounded in accordance with the National Electrical Code and local codes and ordinances. In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. WARNING: Improper use of the grounding plug can result in a risk of electric shock.
PAGE 8
R-1610 R-1611 R-1612 OPERATION DESCRIPTION OF OPERATING SEQUENCE any vapor from the oven cavity and sensor. NOTE: During this first stage, do not open the door or touch STOP/CLEAR pad. 4. When the sensor detects the vapor emitted from the food, the display switches over to the remaining cooking time and the timer counts down to zero. At this time, the door may be opened to stir food, turn it or season, etc. 5. When the timer reaches zero, an audible signal sounds.
PAGE 9
R-1610 R-1611 R-1612 MAGNETRON TEMPERATURE FUSE CONTROL UNIT COM. N.O. F1 RY4 RY5 High B3 POWER TRANSFORMER F3 N.C. GRN B1 Low HOOD CAPACITOR E2 RY3 A3 B9 A7 N.O. TTM HOOD LAMP HL A5 HL FAN MOTOR A1 TURNTABLE MOTOR HOOD MOTOR RY1 FM DOOR SENSING SWITCH RY2 HIGH VOLTAGE CAPACITOR 0.94µF COM. OL STIRRER MOTOR 120 V AC.
PAGE 10
R-1610 R-1611 R-1612 TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected. When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which will be found in the "Test Procedure "section.
PAGE 11
R-1610 R-1611 R-1612 TEST PROCEDURES COMPONENT TEST KEY UNIT TEST 1. 2. 3. 4. 5. 6. 7. 8. Q Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the contacts are closed when the door is closed and open when the door is open.
PAGE 12
R-1610 R-1611 R-1612 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of sensor cooking. (6) After approximately 32 seconds, microwave energy is produced, and the display should start to count down the remaining cooking time and oven should turn off after water is boiling (bubbling). If the oven does not turn off, replace the AH sensor or check the control unit, refer to explanation below.
PAGE 13
R-1610 R-1611 R-1612 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST (18) Carry out “Water load cooking test” again and ensure that the oven works properly. Plunger R1, R2 : 22Ω ± 1% 1/2W R3 : 4.3kΩ ± 5% 1/4W R4 : 1MΩ ± 5% 1/4W F-1 F-2 To connector (F) on Control Unit.
PAGE 14
R-1610 R-1611 R-1612 DESCRIPTION OF LSI LSI(IZA958DR) The I/O signal of the LSI(IZA958DR) is detailed in the following table. Pin No. Signal I/O Description NOTE: For additional informations of LSI, please refer back to the R-1600/1601/ 1602 base model Service Manual. 1 AN10 IN Signal coming from touch key. When either G10 line on key matrix is touched, a corresponding signal out of P10-P17 will be input into AN10. When no key is touched, the signal is held at "H" level.
PAGE 15
R-1610 R-1611 R-1612 ABSOLUTE HUMIDITY SENSOR CIRCUIT (1) Structure of Absolute Humidity Sensor The absolute humidity sensor includes two thermistors as shown in the illustration. One thermistor is housed in the closed vessel filled with dry air while another in the open vessel. Each sensor is provided with the protective cover made of metal mesh to be protected from the external airflow. balance the bridge circuit is deviated to increase the voltage available at AN1 terminal of the LSI.
PAGE 16
R-1610 R-1611 R-1612 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING AGAINST HIGH VOLTAGE: Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in severe, possibly fatal, electric shock. (Example) High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven.
PAGE 17
R-1610 R-1611 R-1612 14.Remove the hood duct from the oven cavity by lifting it up. 15.Screw the oven lamp off from the lamp socket. 16.Remove the lamp socket from the lamp angle. 17.Pull the wire leads from the oven lamp socket by pushing the terminal hole of the oven lamp socket with a small flat type screw driver. 18.Now, the oven lamp socket is free. 19.Release the harness of the AH sensor assembly from three (3) wire holders of the hood duct. 20.
PAGE 18
1 2 3 16 CN-C N.O. N.O. COM. RY1 RY3 7 CN-A T1 1 1 4 RY2 COM. 5 ORG ORG RED BLK RED ORG RED 1 RED YLW BLK WHT CN-A 2 5 4 3 6 7 N.C. BLK RED N.O. COM. WHT WHT BLK GRY GRY WHT WHT FUSE & HOLDER SECONDARY INTERLOCK SWITCH COM. MONITOR SWITCH BLK F RY2 N.O. RY1 COM. RY1 N.O.
PAGE 19
R-1610 R-1611 R-1612 2 1 4 3 6 5 A A Q2 2SB1238 R4 27 B D3 D2 d a b C + – LED C2 GND C3 VC C1 VA C9 VR C4 INT C11 TURNTABLE MOTOR C5 BUZZER C12 HOOD LAMP B + – R3 510 1/2w Q1 2SB1238 (J1) C4 10µ/35v 5 D1 C3 0.1µ/50v 1 D4 ZD1 HZ16-1 8 R1 2.4k 3 C10 R5 4.7k C2 1000µ/35v VRS1 10G471K AC C1 0.
PAGE 20
C-12 HOOD LAMP C-7 MICRO 4 NC LD9 LD8 LD3 D41 1SS355 D20 1SS355 LD2 C12 0.1µ /50v Q23 DTA143EKA R12 15k Q22 DTA143EKA Q21 DTA123JKA F-1 F-2 AH SENSOR F C20 0.1µ/50v Q20 DTA143EKA Q30 DTA143EKA H I R90 330 1w Q24 DTA143EKA Q25 DTA143EKA C90 0.1µ/50v F-3 C13 0.01µ /25v C10 47µ/16v LD7 LD6 LD5 LD4 R10 1k ZD10 UDZ4.3B G R92 1.
PAGE 21
2 3 19 4 H NOTE IC1 P74 IC1 P75 R127 4.7 k R126 4.7 k R125 4.7 k R124 4.7 k R123 4.7 k R122 4.7 k R121 4.7 k R120 4.7 k : IF NOT SPECIFIED, 1/10W ± 5% R133 510k R132 33k 25 C123 0.1µ/50v C122 0.1µ/50v C121 0.1µ/50v C120 0.1µ/50v 50 51 VDD NC NC RESET TEST VREF R03 R02 R01 R00 P13 P12 P11 P10 P03 P02 P01 P00 K03 K02 K01 K00 NC NC NC 26 C126 0.
PAGE 22
R-1610 R-1611 R-1612 PARTS LIST Note: The parts marked “ ∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. REF. NO. "§" MARK: PARTS DELIVERY SECTION PART NO.
PAGE 23
R-1610 R-1611 R-1612 REF. NO. RY1-2 RY3-4 RY5 SSR1 SP1 T1 VRS1 ZD1 3- 2 3- 2 3- 2 3- 2-1 3- 2-1 3- 2-1 3- 2-2 3- 2-2 3- 2-2 3- 2-3 3- 3 3- 4 3- 5 PART NO.
PAGE 24
R-1610 R-1611 R-1612 REF. NO. PART NO.
PAGE 25
R-1610 R-1611 R-1612 2 1 4 3 OVEN AND CABINET PARTS 7-10 6 5 7-3 4-1 6-17 A A 7-3 1-14 4-13 1-18 2-1 7-5 4-19 7-3 4-10 2-5 B B 7-3 4-12 4-11 7-4 1-12 2-6 7-5 1-15 7-1 C 1-16 C 1-13 1-17 4-17 7-8 1-5 7-3 1-3 6-10 D D 7-9 4-7 4-18 4-24 4-20 x2 4-23 4-25 6-16 E 7-7 6-12 4-22 4-20 x2 E 7-3 4-9 6-9 1-10 7-6 1-9 1-8 2-2 4-6 1-11 7-9 F 7-7 6-8 4-16 6-8 4-8 4-5 1-4 6-13 7-10 4-3 6-14 4-14 1-2 1-10 4-4 F 7-11 1-7 7-8 1-1 1-6 4-15 2-3 2-8 G G
PAGE 26
R-1610 R-1611 R-1612 2 1 4 3 6 5 CONTROL PANEL PARTS 3-2 3-1 3-3 3-2-2 3-4 A A 7-3 3-5 B B 3-2-3 3-2-1 4-21 DOOR PARTS 5-4 C C 5-6 5-3 5-1 5-2 5-6 D 5-2-5 D 5-2-1 5-7 5-2-3 E E MISCELLANEOUS 6-6 5-2-2 5-2-4 5-5 F 6-7 F G G 6-1 6-1-1 6-1-4 6-15 6-1-5 6-1-2 6-1-6 H 6-11 H 6-1-7 6-1-3 1 2 4 3 24 5 6
PAGE 27
R-1610 R-1611 R-1612 PACKING AND ACCESSORIES DOOR PROTECTOR SPADP0221MRE0 TOP PAD SPADBB026MRE0 4-3 TURNTABLE TRAY WRAP COVER SSAKH0103MRE0 6-15 RACK RACK HOLDER SPADFB047MRE0 DOOR PAD SPADFA020WRE0 6-1 INSTALL MATERIAL ASSEMBLY 6-3 OPERATION MANUAL 6-5 WALL TEMPLATE BOTTOM PAD SPADBB025MRE0 6-2 INSTALLATION INSTRUCTION 6-4 TOP TEMPLATE 6-13 GREASE FILTER (x 2) ACCESSORY HOLDER SPADFB045MRE0 Non-replaceable items 25 PACKING CASE SPAKCB233MRR12 [R-1610] SPAKCB233MRR13 [R-1611] SPAKCB233MRR14 [R-1
PAGE 28
R-1610 R-1611 R-1612 COPYRIGHT © 1999 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. '99 SHARP CORP. (5S2.530E) Printed in U.S.