Page 2 - performed on each oven prior to release to the owner.; BEFORE SERVICING; . The owner of the unit should be instructed not to use
40 R-1200R-1201 PRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLE EXPO-SURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or o...
Page 3 - WARNING TO SERVICE PERSONNEL; Before Servicing; Disconnect the power supply cord; After repairing; Reconnect all leads removed from components during
1 R-1200R-1201 WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing parts may result in a severe, possiblyfatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Trans-former, Magnetron, High V...
Page 4 - MICROWAVE MEASUREMENT PROCEDURE; should not exceed 1mW/cm
2 R-1200R-1201 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/cm 2 at any point 5cm or more from the external surface of the oven, measured prior to acquisit...
Page 5 - SHARP ELECTRONICS CORPORATION; SERVICE MANUAL; OVER THE COUNTER; DANGER
3 R-1200R-1201 SHARP ELECTRONICS CORPORATION SHARP PLAZA, MAHWAH, NEW JERSEY 07430-2135 SERVICE MANUAL OVER THE COUNTER MICROWAVE OVEN R-1200/ R-1201 FOREWORD This Manual has been prepared to provide Sharp Electronics Corp.Service Personnel with Operation and Service Information for theSHARP OVER TH...
Page 6 - PRODUCT SPECIFICATION; GROUNDING INSTRUCTIONS
4 R-1200R-1201 ITEM DESCRIPTION Power Requirements 120 Volts / 14.1 Amperes60 HertzSingle phase, 3 wire grounded Power Output 1100 watts (IEC TEST PROCEDURE)Operating frequency of 2450MHz Case Dimensions Width 23-7/8" Height 14-1/16" Depth 15- 9/16" Cooking Cavity Dimensions Width 17-1/2...
Page 7 - OVEN DIAGRAM; It will light when oven is operating or door is open.; CONTROL PANEL
5 R-1200R-1201 Electrical RequirementsThe oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THEGROUNDING PIN FROM THE PLUG.The power supply cord and plug must be connected to a separate 120 Volt AC, 60 Hz, 15 Amp. or more dedicated line, usinga grounded rec...
Page 8 - OPERATION; DESCRIPTION OF OPERATING SEQUENCE; OFF CONDITION
6 R-1200R-1201 OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions duringoven operation. OFF CONDITION Closing the door activates the door sensing switch andprimary interlock switch. (In this condition, the monitorswitch contacts are opened.)When oven is...
Page 10 - DESCRIPTION AND FUNCTION OF COMPONENTS; If the door is opened, and the secondary interlock relay; TURNTABLE MOTOR; As the door goes to a closed position, the monitor switch
8 R-1200R-1201 DESCRIPTION AND FUNCTION OF COMPONENTS 3. If the door is opened, and the secondary interlock relay (RY2) and primary interlock switch contacts fail to open,the monitor fuse blows simultaneously with closing of themonitor switch contacts. CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE ...
Page 11 - TROUBLESHOOTING GUIDE
9 R-1200R-1201 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. Manyof the possible causes of troub...
Page 12 - A B C D E F G H
10 R-1200R-1201 CK = Check / RE = Replace POSSIBLE CASE AND DEFECTIVE PARTS PROBLEM TEST PROCEDURE CONDITION OFF CONDITION IDLE CONDITION MICROWAVE COOKING CONDITION Home fuse blows when power cord is plugged into wall receptacle. Monitor fuse blows when power cord is plugged into wall receptacle. D...
Page 13 - POWER TRANSFORMER TEST; TEST PROCEDURES; PROCEDURE
11 R-1200R-1201 B POWER TRANSFORMER TEST TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 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. To test for an open filament, isolate the magnetron from the high voltage...
Page 14 - Reconnect all leads removed from components during testing.
12 R-1200R-1201 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 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. If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input lea...
Page 15 - fan motor, stirrer motor and oven light will be activated by RY1.
13 R-1200R-1201 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 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. Before performing this test, make sure that the primary interlock switch and the secondary interlo...
Page 16 - BLOWN MONITOR FUSE TEST; Reconnect all leads removed from; TOUCH CONTROL PANEL ASSEMBLY TEST
14 R-1200R-1201 I BLOWN MONITOR FUSE TEST TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 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. If the monitor fuse is blown when the door is opened, check the secondar...
Page 17 - -2 In connection with indicators; KEY UNIT TEST
15 R-1200R-1201 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST The following symptoms indicate a defective key unit.a) When touching the pads, a certain pad produces no signal at all.b) When touching a number pad, two figures or more are displayed.c) When touching the pads, sometimes a pad produces...
Page 20 - TOUCH CONTROL PANEL ASSEMBLY; OUTLINE OF TOUCH CONTROL PANEL; Symbol
18 R-1200R-1201 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 8) Disconnect the power supply cord.9) Open the door and block it open. 10) To discharge high voltage capacitor, wait for 60 seconds.11) Reconnect all leads removed from components during testing.12) Re-install the outer case (cabinet)....
Page 21 - DESCRIPTION OF LSI; Signal; Oven lamp, fan motor and turntable motor driving signal
19 R-1200R-1201 DESCRIPTION OF LSI LSIThe I/O signal of the LSI is detailed in the following table. Pin No. Signal I/O Description 1-2 VL2-VL1 IN Power source voltage input terminal.Standard voltage for LCD. 3-6 AN7-AN4 IN Terminal to change cooking input according to the Model.By using the A/D conv...
Page 22 - Hood lamp driving signal.
20 R-1200R-1201 Pin No. Signal I/O Description 30 XIN IN Internal clock oscillation frequency input setting.The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respectto XOUT terminal. 31 XOUT OUT Internal clock oscillation frequency control output.Output to ...
Page 24 - SERVICING
22 R-1200R-1201 1. Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of thecircuits. When handling these parts, the following pre-cautions should be strictly followed. CMOS LSI haveextremely high impedance at its input and output termi-nals. For this reason,...
Page 25 - WITHOUT REMOVING THE OVEN FROM THE WALL
23 R-1200R-1201 Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts mayresult in severe, possibly fatal, electric shock.(Example)High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness ...
Page 27 - COOLING FAN MOTOR REMOVAL; Make sure that the axis of the shaft is not slanted.
25 R-1200R-1201 6. Disconnect high voltage wire A from capacitor.7. Remove the fan duct assembly from the oven cavity, referring to the procedure of "COOLING FAN MOTORREMOVAL" 8. Remove one (1) screw holding capacitor holder and high voltage rectifier to the fan duct. 9. Disconnect the high ...
Page 28 - Positive lock; Rear View
26 R-1200R-1201 1. Disconnect the power supply cord.2. Open the door and block it open.3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the one (1) screw holding the base cover to the oven cavity back plate. 5. Remove the three (3) screws holding the base cover to the oven ...
Page 29 - RIGHT PANEL ASSEMBLY AND POWER UNIT REMOVAL
27 R-1200R-1201 1. Disconnect the power supply cord.2. Open the door and block it open.3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove one (1) screw holding the right panel to the oven cavity front face plate. 5. Release the right panel from the oven cavity front face plat...
Page 30 - DOOR REPLACEMENT
28 R-1200R-1201 DOOR ASSEMBLY REMOVAL1. Disconnect the power supply cord and remove the oven from wall and remove outer case. (Refer to procedure of"Removal of Oven from Wall" and "Outer case Removal") 2. Open the door and block it open.3. To discharge the high voltage capacitor, wai...
Page 31 - NOTE: When carrying out any repair to the door, do not; DOOR DISASSEMBLY
29 R-1200R-1201 1. Disconnect the power supply cord.2. Open the door and block it open.3. To discharge the high voltage capacitor, wait for 60 seconds. 4. R e m o v e d o o r a s s e m b l y , r e f e r r i n g t o " D O O R REPLACEMENT".Replacement of door components are as follows: 5. Plac...
Page 32 - HIGH VOLTAGE COMPONENTS
30 R-1200R-1201 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 Figure S-1. Pictorial Diagram HIGH VOLTAGE RECTIFIER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE WIRE A HIGH VOLTAGE COMPONENTS POWER TRANSFORMER Power Supply cord 120V 60Hz 1 2 3 WHT GRN BLK WHT GRN BLK CAVITY TEMPERATURE FUSE MAGNETRO...
Page 36 - PARTS LIST; DESCRIPTION
34 R-1200R-1201 PARTS LIST Note: The parts marked “ ∆ ” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. " §" MARK: PARTS DELIVERY SECTION REF. NO. PART NO. § DESCRIPTION Q'TY CODE ** * ∆ * ELECTRIC PARTS 1- 1 FH-DZB016MRY0 M High voltage rectifier...
Page 37 - DOOR PARTS
35 R-1200R-1201 REF. NO. PART NO. § DESCRIPTION Q'TY CODE ∆ ∆ ∆ ∆ ∆ ∆ 4- 8 PPACGB014MRF0 M Turntable motor packing 1 AA 4- 9 PHOK-B018MRF0 M Latch hook 1 AF 4-10 FANGTB006MRY0 M Unit mounting plate assembly 1 AS 4-11 NFANPB006MRE0 M Fan blade 1 AC 4-12 LBSHC0037WRE0 M Cord bushing 1 AB 4-13 MLEVFB00...
Page 38 - HOW TO ORDER REPLACEMENT PARTS; RIGHT PANEL PARTS
36 R-1200R-1201 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 6-6 6-7 6-5 6-1 6-1-1 6-1-2 6-1-3 6-1-7 6-2 6-1-5 6-1-6 6-1-4 5-2-2 5-2-3 5-2-1 5-2-5 5-2-13 5-2-7 5-2-9 5-2-8 5-2-10 5-2-11 5-2 5-3 5-4 5-1 5-2-6 5-2-4 5 4-18 4-19 5-5 5-5 7-2 3-3 3-4 3-5 3-2 3-1 3-6 5-2-12 HOW TO ORDER REPLACE...
Page 39 - OVEN AND CABINET PARTS
37 R-1200R-1201 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 OVEN AND CABINET PARTS ; ;; ;; ; ; ; ;;; ; ; ;;;; ; ;;; ; ; ;; ; ; ; ;; ; ; ; ;; ; ; ; ; ;; ; ; ; ;; ; ; ; ;; ; ; ; ;; ; ;; ; ; ; ;;; ;; ;; ; ;; ;;; ;; ;; ; ; ; ; ; ; ;; ; ;;; ;;; ; ;; ;; ; ;; ; ; ; ; ;;; ; ; ; ;; ; ;; ; ;; ; ; ...
Page 40 - COPYRIGHT © 2001 BY SHARP CORPORATION; Non-replaceable items; PACKING AND ACCESSORIES
38 R-1200R-1201 COPYRIGHT © 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, storedin retrieval systems, or transmitted in any form or byany means, electronic, mechanical, photocopying,recording, or otherwise, without prior written permis-sion of the publ...
