R-1500 R-1501 R-1505 R-1506 SERVICE MANUAL S8123R1500X// OVER THE RANGE MICROWAVE OVEN MODELS R-1500 R-1501 R-1505 R-1506 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 contain circuitry capable of producing very high voltage and current. Contact with the following parts may result in a severe, possibly fatal, electrical shock.
R-1500 R-1501 R-1505 R-1506 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.
R-1500 R-1501 R-1505 R-1506 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.
R-1500 R-1501 R-1505 R-1506 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.
R-1500 R-1501 R-1505 R-1506 SERVICE MANUAL PRODUCT DESCRIPTION OVER THE RANGE MICROWAVE OVEN R-1500/ R-1501/ R-1505/ R-1506 GENERAL INFORMATION 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-1500, R-1501 R-1505 and R-1506.
R-1500 R-1501 R-1505 R-1506 PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 14 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 1.5 Cubic Feet 1000 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Width 29-15/16" Height 16-1/4" Depth 15- 9/16" Width 17-1/2" Height 9-7/8" Depth 14-15/16" Hood lamp Hood fan 2 bulbs, 20W x 2, Incandescent light bulbs Approx. 300 C.F.M. Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min.
R-1500 R-1501 R-1505 R-1506 Electrical Requirements The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE GROUNDING 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, using a grounded receptacle. The receptacle should be located inside the cabinet directly above the Microwave Oven/Hood system mounting location.
R-1500 R-1501 R-1505 R-1506 CONTROL PANEL 1 0 0 0 WATTS NO. LBS. CUPS OZ.
R-1500 R-1501 R-1505 R-1506 OPERATION DESCRIPTION OF OPERATING SEQUENCE relay (RY2) and is mechanically associated with the door so that it will function in the following sequence. (1) When the door opens from a closed position, the secondary interlock relay (RY2) and primary interlock switch open their contacts. And contacts of the relay (RY1) remains closed. Then the monitor switch contacts close.
R-1500 R-1501 R-1505 R-1506 VENTILATION METHODS HOT AIR EXHAUST 1. VERTICAL VENTING For this venting method, hot air rising from the conventional range below is drawn in by the hood fan motor through the grease filters at the right and left sides of the base cover, up through the right and left sides of the oven cavity, then discharged vertically at rear center top of the oven, into the customer's vent system. : AIR FLOW To Duct To Duct Hood Fan Motor Hood Intake Duct R Grease Filter 2.
R-1500 R-1501 R-1505 R-1506 NOTE: " SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. " indicates components with potential above 250V. CAVITY THERMAL CUT-OUT MAGNETRON TEMPERATURE FUSE CONTROL UNIT N.O. COM. E2 FUSE 20A RY4 DOOR SENSING SWITCH N.C. B9 WHT HOOD MOTOR A1 A3 RY1 RY5 B1 B3 N.O. HIGH VOLTAGE CAPACITOR 0.94µF/ AC2300V COM. HOOD LAMP HL SECONDARY INTERLOCK RELAY OVEN LAMP RELAY Low HOOD CAPACITOR 120 V AC.
R-1500 R-1501 R-1505 R-1506 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 the monitor switch contacts. CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE TEST THE DOOR SENSING SWITCH, SECONDARY INTERLOCK RELAY (RY2), RELAY (RY1), PRIMARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE").
R-1500 R-1501 R-1505 R-1506 is channelled through the oven cavity to remove steam and vapors given off from the heating foods. It is then exhausted through the exhausting air vents at the oven cavity. This air is then expelled either vertically or horizontally through the customer supplied duct system, or discharged back into the kitchen. HOOD FAN MOTOR HOOD LAMP The hood fan motor is a two-speed, single-phase, double pole induction type, requiring a hood fan capacitor.
N N RELAY (RY-4) RELAY (RY-3) N N RELAY (RY-2) RELAY (RY-1) M L KEY UNIT CONTROL UNIT K HOOD FAN MOTOR J I HOOD HERMAL CUT-OUT MONITOR FUSE H G F E D C B MONITOR SWITCH SECONDARY INTERLOCK SYSTEM PRIMARY INTERLOCK SWITCH TEMPERATURE FUSE OR THERMAL CUT-OUT HIGH VOLTAGE CAPACITOR H.V. RECTIFIER POWER TRANSFORMER A MAGNETRON POSSIBLE CASE AND DEFECTIVE PARTS 12 MICROWAVE COOKING CONDITION DEFROST CENTER RELAYS (RY-5), (TY6) IDLE CONDITION FOIL PATERN ON P.W.B.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER A COMPONENT TEST MAGNETRON ASSEMBLY TEST 1. 2. 3. 4. 5. 6. 7. 8. 9. Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST (HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.) C HIGH VOLTAGE RECTIFIER TEST 1. 2. 3. 4. Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. Isolate the rectifier from the circuit.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 6. Reinstall the outer case (cabinet). 7. Reconnect the power supply cord after the outer case is installed. 8. Run the oven and check all functions. CAUTION: IF THE THERMAL CUT-OUT OR TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT OR TEMPERATURE FUSE. F PRIMARY INTERLOCK SWITCH TEST 1. 2. 3. 4. 5. 6. 7. 8. G Disconnect the power supply cord, and then remove outer case.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 5. 6. 7. 8. plate of the oven cavity with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing the monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the continuity of the monitor circuit.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST Resistance between; YLW BLU 1 4 HOOD FAN CAPACITOR 33 Ω 5 22 Ω 11 Ω BLU (1) BLK (2) BLU (1) BLK (2) WHT (3) AND AND AND AND AND YLW (4) = YLW (4) = BLK (2) = WHT (3) = RED (5) = 0Ω (Shorted) 33Ω 33Ω 11Ω 22Ω 2 BLK RED 3 6-PIN CONNECTOR OF HOOD FAN MOTOR BLU BLK WHT 1 2 3 WHT 5. 6. 7. 8. L Reconnect all leads removed from components during testing. Reinstall the outer case (cabinet).
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 8) Run the oven and check all functions. 2. Control Unit. The following symptoms indicate a defective control unit. Before replacing the control unit, perform the Key unit test (Procedure M) to determine if control unit is faulty. 2-1 In connection with pads. a) When touching the pads, a certain group of pads do not produce a signal. b) When touching the pads, no pads produce a signal.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER N COMPONENT TEST RELAY TEST 1. Disconnect the power supply cord, and then remove outer case. Refer to procedure of " HOOD EXHAUST LOUVER REMOVAL ", " REMOVAL OF OVEN FROM WALL " and " OUTER CASE REMOVAL ". 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. Remove the hood intake duct R. 5. Disconnect the leads to the primary of the power transformer. 6.
R-1500 R-1501 R-1505 R-1506 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 1. Foil pattern check and repairs. 1) Disconnect the power supply cord. 2) Open the door and block it open. 3) To discharge high voltage capacitor, wait for 60 seconds. 4) Remove the control unit, referring to the procedure of " CONTROL PANEL ASSEMBLY, CONTROL UNIT AND KEY UNIT REMOVAL ". 5) Follow the troubleshooting guide given below for repair. STEPS 1 2 OCCURRENCE CAUSE OR CORRECTION Only pattern at "a" is broken.
R-1500 R-1501 R-1505 R-1506 TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units as shown in the touch control panel circuit. Symbol VC (1) Key Unit (2) Control Unit (The Control unit consists of LSI Unit and Power U nit) Voltage -5.3V Application LSI(IC1) 3) Synchronizing Signal Circuit The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit.
R-1500 R-1501 R-1505 R-1506 Pin No. 15 16 Signal P53 P52 I/O OUT OUT Description Terminal not used. Oven lamp, fan motor and turntable motor driving signal 16.7 msec. To turn on and off shut off relay (RY1). The square waveform voltage is delivered to the RY1 driving circuit and RY2 control circuit. H : GND L : -5V During cooking 17-18 19 P51-P50 P47 OUT OUT Terminal not used. Magnetron high-voltage circuit driving signal. To turn on and off the cook relay (RY2).
R-1500 R-1501 R-1505 R-1506 Pin No. Signal I/O 37 P23 OUT 38 P22 OUT 39 P21 OUT 40 P20 OUT 41 P17 OUT 42 P16 OUT 43 P15 OUT 44 P14 OUT P13-P11 45-47 48-50 51-72 SEG24-SEG22 SEG21-SEG0 OUT OUT OUT 73/74 75 76 77 VCC/VREF AVSS COM3 COM2 IN IN OUT OUT 78 COM1 OUT 79 COM0 OUT 80 VL3 IN Description Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of G4 line keys on key matrix is touched. Key strobe signal.
R-1500 R-1501 R-1505 R-1506 SERVICING 1. Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of the circuits. When handling these parts, the following precautions should be strictly followed. CMOS LSI have extremely high impedance at its input and output terminals. For this reason, it is easily influenced by the surrounding high voltage power source, static electricity charge in clothes, etc. and sometimes it is not fully protected by the built-in protection circuit.
R-1500 R-1501 R-1505 R-1506 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.
R-1500 R-1501 R-1505 R-1506 5. Pull the hood exhaust louver from the oven cavity by pushing the right and left tabs of the hood exhaust louver to remove. 6. Now, the hood exhaust louver is free. Left tab Hood exhaust louver Screw Screw Right tab Screw REMOVAL OF OVEN FROM WALL (Two persons recommended to remove the oven) 1. Disconnect the power supply cord, and uncoil the power supply cord. 2. To discharge the high voltage capacitor, wait for 60 seconds. 3.
R-1500 R-1501 R-1505 R-1506 4. Disconnect the 6-pin connector of the hood fan motor from the main wire harness located at the right edge of the oven cavity top plate and release the snap band from the hood duct. 5. Remove the hood fan motor from the oven cavity top plate by lifting it up. 6. Now, the hood fan motor is free. MAGNETRON REMOVAL 1. Disconnect the power supply cord , remove the oven from wall and remove outer case (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal".
R-1500 R-1501 R-1505 R-1506 TEMPERATURE FUSE (MAGNETRON) REMOVAL 1. 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, wait for 60 seconds. 4. Remove the fan duct assembly from the oven cavity, referring to the procedure of " COOLING FAN MOTOR REMOVAL". 5.
R-1500 R-1501 R-1505 R-1506 TURNTABLE MOTOR AND FOOD LAMP SOCKETS REMOVAL 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 cavity front face plate. 6. Open the base cover. 7. Release the two hood lamp sockets from the base cover. 8.
R-1500 R-1501 R-1505 R-1506 2. Before attaching a new key unit, wipe off remaining adhesive on the key fixing plate surfaces completely with a soft cloth soaked in alcohol. 3. When attaching the key unit to the key fixing plate, adjust the upper edge and right edge of the key unit to the correct position of key fixing plate. See key unit location. 4. Stick the key unit firmly to the key fixing plate by rubbing with soft cloth not to scratch. 13.
R-1500 R-1501 R-1505 R-1506 After adjustment, check the following. 1. In and out play of door remains less than 0.5mm when in the latched position. First check upper position of latch hook, pushing and pulling upper portion of door toward the oven face. Then check lower portion of the latch hook, pushing and pulling lower portion of the door toward the oven face. Both results (play in the door) should be less than 0.5mm. 2.
R-1500 R-1501 R-1505 R-1506 DOOR DISASSEMBLY 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 three (3) screws holding the hood exhaust louver to the oven cavity front face plate. 5. Remove the hood exhaust louver from the oven cavity by pushing the right and left tabs of the hood exhaust louver. (Refer to the procedure of "HOOD EXHAUST LOUVER REMOVAL".) 6.
1 2 R E D RED ORG BLK WHT WHT COM. N.O. N.O. COM. 14 T1 1 2 CN-E CN-C CN-C 1 C100 9 3 33 1 CN-A 1 CN-B PPL YLW BLK F 4 COM. MONITOR SWITCH N.C.
R-1500 R-1501 R-1505 R-1506 2 1 4 3 6 5 A A D1-D4 1N4002 D4 5 D1 D2 (J1) 1 B + – C2 1000µ/35v D3 d a 8 10G471K VRS1 3 C1 0.1µ/50v T1 B R1 750 1w C – D21 1SS270A COM SP1 PKM22EPT COM MICRO. C3 VA C5 INT C12 OVEN LAMP TURNTABLE MOTOR FAN MOTOR C + Q21 KRC243M RY1 N.O AC(H) VC C21 10µ/35v D22 1SS270A D N.O OVEN LAMP TURNTABLE MOTOR FAN MOTOR C7 R30 3.3k AC(N) GND R2 750 1w b c C1 C4 BUZZER C11 MICRO. C10 HOOD MOTOR H/L C9 HOOD MOTOR COM.
C9 H. MOTOR COM. C4 C6 C3 DOOR SENSING SWITCH Q22 MICRO. C14 C13 C11 OVEN LAMP TURNTABLE C12 MOTOR FAN MOTOR BUZZER HOOD LAMP VA C8 C10 H. MOTOR H/L HOOD LAMP C2 C7 VR VC C11 0.1µ/50v R4 82 C10 47µ/16v NOTE : R6 4.7k Q2 KTA1661 R5 4.7k C12 0.1µ/50v Q22 DTA143EAK Q21 DTA143EAK Q30 DTA143EAK Q26 DTA143EAK Q25 DTA143EAK Q24 DTA143EAK Q23 DTA143EAK : IF NOT SPECIFIED, 1/16W ± 5% LD1 LD2 LD3 LD4 – F G I H C20 0.1µ/50v R12 15k Q11 DTA143EKA C13 0.
R-1500 R-1501 R-1505 R-1506 2 1 4 3 6 5 A A CN-C 14 D40 D20 B D21 1 DIP B R1 R2 2 Q1 R 2 B ZD1 SP1 RY1 0 RM 5 3 0 B F 0 V 4 9 A 7 2 M SCM CN-E R3 R30 C 1 E C2 C C21 BFB T1 Q21 C3 B E 1 C1 D1 D3 D4 D2 1 VRS1 D D 5 J1 P S RY2 E 3 8 C100 QKITPB035MRE0 E RY5 D25 D26 D22 F F D24 D23 RY4 RY3 1 RY6 LOT NO. 9 5 G 1 G CN-A CN-B H H Figure S-4.
R-1500 R-1501 R-1505 R-1506 PARTS LIST Note: The parts marked “∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. REF. NO. PART NO.
R-1500 R-1501 R-1505 R-1506 REF. NO. SP1 T1 VRS1 3- 2 3- 2 3- 2 3- 2 3- 2-1 3- 2-1 3- 2-1 3- 2-1 3- 2-2 3- 2-2 3- 2-2 3- 2-2 3- 2-3 3- 2-3 3- 2-3 3- 2-3 3- 2-4 3- 3 3- 4 3- 5 PART NO.
R-1500 R-1501 R-1505 R-1506 * REF. NO. 6-1-7 6-1-8 6- 2 6- 3 6- 4 6- 5 6- 6 6- 7 6- 8 6- 9 6-10 6-11 6-12 6-13 6-14 PART NO.
R-1500 R-1501 R-1505 R-1506 2 1 4 3 6 5 OVEN AND CABINET PARTS 6-1-5 6-14 A A 4-10 7-3 2-1 7-3 7-5 7-3 B 7-3 2-5 7-5 B 4-12 1-12 7-5 4-19 7-5 1-14 C C ;;; ; 2-6 7-3 7-3 4-17 7-3 4-16 4-18 4-13 D 4-17 D 2-4 2-2 7-3 6-10 4-7 7-8 6-12 E 7-1 4-16 4-20 4-13 4-15 1-15 1-2 4-4 7-9 4-11 1-8 7-6 4-8 7-7 1-16 1-13 7-10 4-3 1-1 4-5 4-9 1-9 1-4 E 7-4 6-9 6-8 F 1-3 1-7 1-11 1-5 4-6 F 1-10 1-11 1-10 4-21 4-14 4-22 7-8 1-6 2-8 1-16 1-13 7-3
R-1500 R-1501 R-1505 R-1506 2 1 4 3 6 5 3-5 CONTROL PANEL PARTS 3-3 3-4 A A 3-1 3-2 3-5 3-5 3-2-1 B B DOOR PARTS 4-1 5 7-3 3-2-3 C C 5-3 3-2-2 5-4 3-2-4 5-5 5-1 5-2-3 5-5 D D 5-2-3 E E 5-2-1 5-2-2 5-2 6-6 F F 6-7 MISCELLANEOUS 6-1 6-1-1 6-1-4 G G 6-1-5 6-1-2 6-1-6 6-11 6-1-7 6-1-3 6-1-8 H H 1 2 4 3 41 5 6
R-1500 R-1501 R-1505 R-1506 COPYRIGHT © 2001 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. '01 SHARP CORP. (8S1.730E) Printed in U.S.