R - 50 8 CK R - 5 10 CK R -510 CW SERVICE MANUAL S3906R510CPW/ MICROWAVE OVEN MODELS NO. LBS. CUPS. OZ.
R -508 CK R -510CK R-510CW 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 -508CK R -510CK R -510CW 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 - 50 8 C K R - 5 10 C K R -5 10C W 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 -508CK R -510CK R -510CW SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE OVEN R-508CK/ R-510CK/ R-510CW GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN, R-508CK, R-510CK, R-510CW. It is recommended that service personnel carefully study the entire text of this manual so that they will be qualified to render satisfactory customer service.
R - 50 8 C K R - 5 10 C K R -5 10C W SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 13 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 1100 watts (IEC-705 TEST PROCEDURE) Operating frequency of 2450MHz Width 24" Height 13-3/8" Depth 19-1/8" Width 17-3/8" Height 10-1/2" Depth 18-5/8" Case Dimensions Cooking Cavity Dimensions 2.0 Cubic Feet Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min.
R -508CK R -510CK R -510CW contact a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polarized. If the extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally.
R - 50 8 C K R - 5 10 C K R -5 10C W OPERATION DESCRIPTION OF OPERATING SEQUENCE relay and is mechanically associated with the door so that it will function in the following sequence. (1) When the door opens from the closed position, the primary interlock relay (RY2) and secondary interlock switch open their contacts. And contacts of the relay (RY1) remains closed. Then the monitor switch contacts close. (2) When the door is closed from the open position, the monitor switch contacts open first.
R -508CK R -510CK R -510CW SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. MAGNETRON TEMP. FUSE NOTE: Indicates components with potential above 250 V. MONITOR FUSE 20A COM. N.O. A2 CAPACITOR 1.0µF AC 2300V (RY-2) PRIMARY INTERLOCK RELAY (RY-1) A1 GRN CONTROL UNIT N.O. COM. 120V AC 60 Hz B1 DOOR SENSING SWITCH CAVITY TEMP. FUSE TTM OL FM TURNTABLE MOTOR OVEN LAMP POWER TRANSFORMER B2 N.C. MONITOR SWITCH COM. H.V.
R - 50 8 C K R - 5 10 C K R -5 10C W DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM 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, PRIMARY INTERLOCK RELAY (RY2), RELAY (RY1), SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE"). NOTE: MONITOR FUSE AND MONITOR SWITCH ARE REPLACED AS AN ASSEMBLY.
R -508CK R -510CK R -510CW 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.
R - 50 8 C K R - 5 10 C K R -5 10C W CK = Check / RE = Replace Home fuse or circuit breaker blows when power cord is plugged into wall receptacle Monitor fuse blows when power cord is plugged into wall receptacle. OFF CONDITION All letters and indicators do not appear in display when power cord is first plugged into wall outlet. Display does not operate properly when STOP/CLEAR key is touched. (Buzzer should sound and ":" or time of day should appear in display.
R -508CK R -510CK R -510CW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 4. 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. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance the magnetron is grounded and must be replaced. 6.
R - 50 8 C K R - 5 10 C K R -5 10C W TEST PROCEDURES PROCEDURE LETTER C COMPONENT TEST 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. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, reverse the leads to the rectifier terminals and observe meter reading.
R -508CK R -510CK R -510CW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST CAUTION: IF THE TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE TEMPERATURE FUSE. F SECONDARY INTERLOCK SWITCH TEST 1. 2. 3. 4. 5. 6. 7. 8. Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch.
R - 50 8 C K R - 5 10 C K R -5 10C W TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case (cabinet). 7. Reconnect the power supply Screw Driver cord after the outer case is RED installed. WHT/WHT 8. Run the oven and check all functions. Monitor Switch Ohmmeter Secondary Interlock Switch H BLOWN MONITOR FUSE TEST 1. 2. 3. 4. Disconnect the power supply cord, and then remove outer case. Open the door and block it open.
R -508CK R -510CK R -510CW 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 no signal. If the Key unit is defective. 1) Disconnect the power supply cord, and then remove outer case. 2) Open the door and block it open. 3) Discharge high voltage capacitor.
R - 50 8 C K R - 5 10 C K R -5 10C W TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 5. Reconnect all leads removed from components during testing. 6. Re-install the outer case (cabinet). 7. Reconnect the power supply cord after the outer case is installed. 8. Run the oven and check all functions.
R -508CK R -510CK R -510CW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST (6) If improper operation is indicated, the control unit is probably defective and should be checked. FOIL PATTERN ON THE PRINTED WIRING BOARD TEST To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the PWB, this foil pattern acts as a fuse. 1. Foil pattern check and repairs. 1) Disconnect the power supply cord, and then remove outer case. 2) Open the door and block it open.
R - 50 8 C K R - 5 10 C K R -5 10C W TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3) Power Source Circuit This circuit generates voltages necessary in the control unit from the AC line voltage. In addition, the synchronizing signal is available in order to compose a basic standard time in the clock circuit. The touch control section consists of the following units. (1) Key Unit (2) Control Unit (The Control Unit consists of Power Unit and LSI Unit).
R -508CK R -510CK R -510CW Pin No. Signal I/O Description 11-13 P57-P55 OUT Terminal not used. 14 CNTR0 OUT Signal to sound buzzer (2.0 kHz). A: key touch sound. B: Completion sound. 0.1 sec. H : GND A L : -5V 2.0 sec. H : GND B L : -5V 15 P53 OUT 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.
R - 50 8 C K R - 5 10 C K R -5 10C W Pin No. Signal I/O Description 34 P26 OUT Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45 terminal while one of G7 line keys on key matrix is touched. 35 P25 OUT Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45 terminal while one of G6 line keys on key matrix is touched. 36 P24 OUT Key strobe signal. Signal applied to touch-key section.
R -508CK R -510CK R -510CW TOUCH CONTROL PANEL SERVICING A. On some models, the power supply cord between the touch control panel and the oven itself is so short that the two can’t be separated. For those models, check and repair all the controls (sensor-related ones included) of the touch control panel while keeping it connected to the oven. B. On some models, the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other.
R - 50 8 C K R - 5 10 C K R -5 10C W 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 -508CK R -510CK R -510CW CAUTION: 1. DISCONNECT OVEN FROM POWER SUP PLY BEFORE REMOVING OUTER CASE. 2. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. NOTE: When replacing the outer case, the 2 special Torx screws must be reinstalled in the same locations. Special screw Screw Driver (Type: TORX T20 H or GTXH20-100) POWER TRANSFORMER REMOVAL 1. Disconnect the power supply cord and then remove outer case. 2. Open the oven door and block it open. 3.
R - 50 8 C K R - 5 10 C K R -5 10C W OVEN LAMP AND LAMP SOCKET REMOVAL 1. 2. 3. 4. 5. Disconnect the power supply cord and remove outer case. Open the door and block it open. Discharge high voltage capacitor. Remove the oven lamp from the oven lamp socket. Pull the wire leads from the oven lamp socket by pushing the terminal hole of the oven lamp socket with the small flat type screw driver. 6. Remove the oven lamp socket from the magnetron duct by turning the socket counterclockwise. 7.
R -508CK R -510CK R -510CW COOLING FAN MOTOR REMOVAL CAUTION: * Do not reuse the removed fan blade because the hole (for shaft) may be larger than normal. REMOVAL 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. Disconnect the wire leads from the fan motor. 5. Remove the two (2) screws holding the fan motor to the oven cavity back plate. 6.
R - 50 8 C K R - 5 10 C K R -5 10C W forth, and up and down. In and out play of the door allowed by the upper and lower position of the latch hook should be less than 0.5mm. The vertical position of the latch hook should be adjusted so that the door sensing switch and secondary interlock switch are activated with the door closed. The horizontal position of the latch hook should be adjusted so that the plunger of the monitor switch is pressed with the door closed. 6. Secure the screws with washers firmly.
R -508CK R -510CK R -510CW Note: The door on a microwave oven is designed to act as an electronic seal preventing the leakage of microwave energy from oven cavity during cook cycle. This function does not require that door be airtight, moisture (condensation)-tight or light-tight. Therefore, occasional appearance of moisture, light or sensing of gentle warm air movement around oven door is not abnormal and do not of themselves indicate a leakage of microwave energy from oven cavity.
1 2 BLU ORG BLK 2 3 28 COM. PRIMARY INTERLOCK RELAY 1 2 CN-A N.O. RY1 N.O. RY2 T1 COM. 4 RED COM. 5 COM. SECONDARY NO INTERLOCK SWITCH WHT WHT WHT WHT TURNTABLE MOTOR Figure S-1. Pictorial Diagram BLK MONITOR FUSE & HOLDER RED D GRY WHT WHT BRN WHT WHT RED ORG FAN MOTOR MAGNETRON POWER TRANSFORMER H.V.
R -508CK R -510CK R -510CW 2 1 4 3 6 5 A A B B A1 AC A2 + d a C1 2200µ/25v CN-A CN-C 9PIN LEAD WIRE HARNESS D1 S1NB10 10G471K C VRS1 T1 – (J1) D c E GND C5 VR SP1 PKM22EPT b C3 C D C9 INT RY1 OVEN LAMP TURNTABLE MOTOR FAN MOTOR NO C4 BUZZER AC COM C6 OVEN LAMP TURNTABLE MOTOR FAN MOTOR MICRO NO C8 MICRO COM C7 (BROWNER) SH-A C2 NC SH-B C1 DOOR E RY2 F F DOOR SENSING SWITCH G G H H Figure S-2.
C-2 C-4 C-9 DOOR MICRO (BROWNER) R1 82 R4 560 1/2w R11 1k – + Q22 DTA123JKA Q21 DTD143EKA : IF NOT SPECIFIED 1/10W ± 5% D40 MA152WA D20 MA152WA NOTE C-1 C-8 C-7 OVEN LAMP TURNTABLE C-6 MOTOR FAN MOTOR NC BUZZER INT C-5 C1 0.1µ/50v R30 3.3k R2 4.7k – + C20 0.1µ/50v Q30 DTA143EKA Q10 DTA143EKA R41 15k Q20 DTA143EKA Q1 2SA1037AK 10µ /35v VR LD1 LD2 LD3 LD4 R40 C10 0.1µ /50v C21 R3 4.
C-2 C-4 C-9 C-5 DOOR MICRO (BROWNER) R11 1k R4 560 1/2w – + Q22 DTA123JKA Q21 DTD143EKA C20 0.1µ/50v Q30 DTA143EKA Q10 DTA143EKA 5 CF1 CST4.00MGW (J17) 4.7k (J15) 4.7k (J13) 4.7k (J11) 4.
R - 50 8 C K R - 5 10 C K R -5 10C W 2 1 4 3 6 5 A A B B SW (GREEN) C 1 CN - C C 2 1 D1 CN - B SH - B C1 SH - A (D2) DIP 9 (D3) (D4) SP1 D AC DU (J1) OM 1 OL TTM FM 7 D S P RY1 E F 2 E 4 T1 2 CN - A 1 VRS1 3 1 (XA) AC BROWNER F DU OM DU F OM VH RY3 RY2 MICRO G G H H Figure S-5 .
R -508CK R -510CK R -510CW 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.
R - 50 8 C K R - 5 10 C K R -5 10C W ∆ ∆ REF. NO. PART NO.
R -508CK R -510CK R -510CW 2 1 4 3 6 5 7-7 A OVEN AND CABINET PARTS 7-10 A 7-7 2-3 7-9 B B 7-10 4-7 6-7 C C 1-10 4-11 1-5 7-9 4-6 7-3 7-6 1-14 D D 7-8 4-8 1-9 7-8 4-2 6-9 E 7-5 E 1-11 1-3 4-9 7-2 1-4 7-2 6-5 1-8 7-5 7-4 4-3 4-5 4-10 F F 1-12 1-13 7-6 1-7 1-8 2-1 4-4 6-4 1-6 7-1 6-6 4-1 G G 1-1 1-2 7-5 2-2 2-2 H 7-5 2-2 1 4-12 7-5 2-2 2 H 4 3 35 5 6
R - 50 8 C K R - 5 10 C K R -5 10C W 2 1 4 3 6 5 CONTROL PANEL PARTS A A 3-1 3-2-5 3-2 3-2-4 3-3 B B DOOR PARTS 3-2-1 C C 5-4 3-2-3 3-2-2 D D 5-2 E E 5-5 5-3 F F 5-1-1 MISCELLANEOUS 5-1-2 G G 5-1 6-1 6-2 6-3 H H Actual wire harness may be different from illustration.
R -508CK R -510CK R -510CW PACKING AND ACCESSORIES TOP PAD ASSEMBLY FPADBB038MRE0 DOOR PROTECTION SHEET SPADP0221MRE0 PLASTIC BAG SSAKHA009WRE0 (R-508CK) SSAKHA009WRE0 (R-510CK) SSAKHB005MRE0 (R-510CW) TRAY HOLDER SPADFB015MRE0 6-5 TURNTABLE TRAY 6-8 OPERATION MANUAL Y VIT EN TO 6-4 TURNTABLE SUPPORT E TH CA OV IN BOTTOM PAD ASSEMBLY FPADBB039MRE0 TRAY PACK SPADPB038MRE0 PACKING CASE SPAKCB258MRR1 (R-508CK) SPAKCB258MRR2 (R-510CK) SPAKCB258MRR3 (R-510CW) 37
R - 50 8 C K R - 5 10 C K R -5 10C W 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. (2S2.530E) Printed in U.S.
