R-201FK/W R-203FW R-205FW R-206FW SERVICE MANUAL S1201R201FPW/ MICROWAVE OVEN MODELS R-201FK/W R-203FW R-205FW R-206FW 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 following parts may result in a severe, possibly fatal, electrical shock.
R-201FK/W R-203FW R-205FW R-206FW 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-201FK/W R-203FW R-205FW R-206FW 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-201FK/W R-203FW R-205FW R-206FW 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-201FK/W R-203FW R-205FW R-206FW SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE OVEN R-201FK/ R-201FW/ R-203FW/ R-205FW/ R-206FW GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-201FK, R-201FW, R-203FW, R205FW and R-206FW.
R-201FK/W R-203FW R-205FW R-206FW PRODUCT DESCRIPTION SPECIFICATIONS ITEM DESCRIPTION Power Requirements 120 Volts 60 Hertz Single phase, 3 wire grounded Power Consumption 1100W / Approx. 9.6 Amperes Power Output 700 W nominal of RF microwave energy (IEC Test procedure) Operating frequency 2450 MHz Case Dimensions Width 18-1/8" Height 10-7/8" Depth 13-7/8" Cooking Cavity Dimensions (0.
R-201FK/W R-203FW R-205FW R-206FW installing this appliance, observe all applicable codes and ordinances. A short power-supply cord is provided to reduce risks of becoming entangled in or tripping over a longer cord. Where a two-pronged wall-receptacle is encountered, it is the personal responsibility and obligation of the customer to 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.
R-201FK/W R-203FW R-205FW R-206FW OPERATION DESCRIPTION OF OPERATING SEQUENCE so that it will function in the following sequence. (1) When the door opens from the closed position, the secondary interlock switch, door sensing switch and primary interlock relay (RY2) open their contacts. Then the monitor switch contacts close. (2) When the door is closed from the open position, the monitor switch contacts open first. Then the contacts of the secondary interlock switch and door sensing switch close.
R-201FK/W R-203FW R-205FW R-206FW SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY NOTE: " C/T FUSE " indicates components with potentials above 250V. TEMPERATURE FUSE (OVEN) N.O. POWER TRANSFORMER COM. (RY-2) (RY-1) A3 PRIMARY INTERLOCK RELAY CAPACITOR 0.82µF AC2100V CONTROL UNIT A1 B2 B1 GRN 120V AC 60 Hz DOOR SENSING SWITCH TTM OL TURNTABLE MOTOR OVEN LAMP MONITOR SWITCH FM RECTIFIER MAGNETRON FAN MOTOR SECONDARY INTERLOCK SWITCH Figure O-1.
R-201FK/W R-203FW R-205FW R-206FW DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM open, the C/T fuse blows simultaneously with closing of the monitor switch contacts. CAUTION: BEFORE REPLACING A BLOWN C/T FUSE, TEST THE DOOR SENSING SWITCH, PRIMARY INTERLOCK RELAY (RY2), SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE"). NOTE: C/T FUSE AND MONITOR SWITCH ARE REPLACED AS AN ASSEMBLY.
R-201FK/W R-203FW R-205FW R-206FW 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-201FK/W R-203FW R-205FW R-206FW CK = Check / RE = Replace FOIL PATTERN ON PWB. EXPRESS DEFROST KEY UNIT DIRTY OVEN CAVITY LOW VOLTAGE WRONG OPERATION CONTROL UNIT OR RELAY TURNTABLE MOTOR COOLING FAN MOTOR OVEN LAMP OR SOCKET C/T FUSE MONITOR SWITCH F G H RE RE CK I/K CK CK CK J M L SECONDARY INTERLOCK SWITCH PRIMARY INTERLOCK SYSTEM TEMPERATURE FUSE (OVEN) HIGH VOLTAGE CAPACITOR POWER TRANSFORMER C D E F H.V.
R-201FK/W R-203FW R-205FW R-206FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 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. Reconnect all leads removed from components during testing. 7. Reinstall the outer case (cabinet). 8. Reconnect the power supply cord after the outer case is installed. 9.
R-201FK/W R-203FW R-205FW R-206FW 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-201FK/W R-203FW R-205FW R-206FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 8. Run the oven and check all functions. PRIMARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH 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. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch.
R-201FK/W R-203FW R-205FW R-206FW TEST PROCEDURES PROCEDURE LETTER H COMPONENT TEST BLOWN C/T FUSE 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. If the C/T fuse is blown when the door is opened, check the primary interlock relay, secondary interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown C/T fuse.
R-201FK/W R-203FW R-205FW R-206FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 4) Replace the key unit. 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. 2. Control Unit. The following symptoms indicate a defective control unit. Before replacing the control unit, perform the Key unit test (Procedure J) to determine if control unit is faulty.
R-201FK/W R-203FW R-205FW R-206FW TEST PROCEDURES PROCEDURE LETTER K COMPONENT TEST RELAY TEST 1. 2. 3. 4. 5. Disconnect the power supply cord and then remove outer case. Open the door and blocked it open. Discharge high voltage capacitor. Disconnect the leads to the primary of the power transformer. Ensure that these leads remain isolated from other components and oven chassis by using insulation tape. 6. After that procedure, re-connect the power supply cord. 7.
R-201FK/W R-203FW R-205FW R-206FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST STEPS OCCURRENCE CAUSE OR CORRECTION 1 Only pattern at "a" is broken. *Insert jumper wire J1 and solder. 2 Pattern at "a" and "b" are broken. *Insert the coil RCILF2003YAZZ between "c" and "d". VRS1 RY1 RY2 1 CN-A 3 5) Make a visual inspection of the varistor.
R-201FK/W R-203FW R-205FW R-206FW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3) Power Source Circuit This circuit generates voltage 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 as shown in the touch control panel circuit.
R-201FK/W R-203FW R-205FW R-206FW DESCRIPTION OF LSI The I/O signal of the LSI are detailed in the following table. Pin No. 1 Signal RESET I/O IN 2 3 TEST VSS IN IN 4 OCS3 IN 5 OCS4 OUT 6 7 VD1 VDD IN IN 8 AVDD IN 9 AVREF IN 10 AVSS IN P40-P42 IN 14 P43 IN 15 BZ OUT 11-13 Description Auto clear terminal. Signal is input to reset the LSI to the initial state when power is supplied. Connected to GND. Power source voltage: -5V. VSS voltage of power source circuit input.
R-201FK/W R-203FW R-205FW R-206FW Pin No. 25 Signal K01 I/O IN 26 K02 IN 27 K03 IN Description Signal similar to K02. When either G9 line on key matrix is touched, a corresponding signal will be input into K01. Signal coming from touch key. When either G10 line on key matrix is touched, a corresponding signal out of R00, R01, R02, R03, P20 and P21 will be input into K02. When no key is touched, the signal is held at “H” level. Signal synchronized with commercial power source frequency.
R-201FK/W R-203FW R-205FW R-206FW 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.
R-201FK/W R-203FW R-205FW R-206FW 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-201FK/W R-203FW R-205FW R-206FW to free it from retaining clips on the cavity face plate. 6. Lift entire outer case from the unit. CAUTION: 1. DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. 2. DISCHARGE THE HIGH VOLTAGE CA- PACITOR 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. MAGNETRON REMOVAL 1. 2. 3. 4. 5. 6. Remove the magnetron from waveguide. 7. Now, the magnetron is free.
R-201FK/W R-203FW R-205FW R-206FW CONTROL PANEL ASSEMBLY REMOVAL 1. 2. 3. 4. Disconnect the power supply cord and remove outer case. Open the door and block it open. Discharge high voltage capacitor. Disconnect the leads from the control unit. 5. Remove the one (1) screw holding the control panel to the front plate of the oven cavity. 6. Now, the control panel assembly is free. GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT Removal 1. Disconnect the power supply cord and then remove outer case. 2.
R-201FK/W R-203FW R-205FW R-206FW TTM packing 3. Re-connect the wire leads to the turntable motor. 4. Insert the tab of the turntable motor cover into the hole of the bottom plate. 5. Re-install the turntable motor cover to the bottom plate with one (1) screw. Turntable motor Figure C-3. TTM packing Installation COOLING FAN MOTOR REMOVAL REMOVAL 1. Disconnect the power supply cord and remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4.
R-201FK/W R-203FW R-205FW R-206FW Re-install 1. Re-install each switch in its place. The secondary interlock/monitor switches are in the lower position and the door sensing switch is in the upper position. 2. Re-connect wire leads to each switch. Refer to pictorial diagram. 3. Secure latch hook (with two (2) mounting screws) to oven flange. 4. Install the switch lever to the oven cavity 5. Make sure that the monitor switch is operating properly and check continuity of the monitor circuit.
R-201FK/W R-203FW R-205FW R-206FW 5. Catch two (2) pins of door panel on two (2) hole of upper and lower oven hinges. 6. Re-install choke cover to door panel by pushing. Note: After any service to the door; (A) Make sure that door sensing switch, secondary interlock switch and monitor switch are operating properly. (Refer to chapter "Test Procedures".). (B) An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards.
1 H 2 ORG 1 CN-A 3 N.O. CN-A 1 ORG 2 3 WHT RY2 PRIMARY INTERLOCK RELAY COM. T1 N.C. 3 28 COM RED 4 5 GRY WHT WHT WHT GRY ORG ORG C GRY ORG RED N (WHT) (RED) POWER TRANSFORMER (RED) MAGNETRON H.V. RECTIFIER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE COMPONENTS C/T FUSE BLK NOTE: The neutral (WHT) wire must be connected to the terminal with "N" mark on the power supply cord. POWER SUPPLY CORD 120V 60Hz 5 Figure S-1.
3 29 DOOR SENSING SWITCH AC(H) MICRO OVEN LAMP TURNTABLE MOTOR FAN MOTOR AC120V 60Hz AC(N) A3 VRS1 RY2 RY1 c b (J1) D4 – + 4 R4 910 1/2w D40 Q22 DTA123JS SP1 (J12) (J13) DOOR M COM BZ P40 P41 P42 VR INT -5V RST C10 0.1µ /25v CPU UNIT R41 15k C20 0.1µ/25v Q20 DTA143EAK Q30 DTA143EAK Q10 DTA143EAK Q1 2SA1037AK 5 R78 220k R77 220k R76 220k R75 220k C4 0.01µ /25v C7 0.1µ /25v C3 0.
R-201FK/W R-203FW R-205FW R-206FW 1 2 4 3 6 5 A A DIP 2 C8 5 C21 4 (J10) (J11) 3 SP1 D20 D21 D D E D3 D4 D2 F D1 RY2 CN-A 3 1 G S VRS1 RY1 F C C2 1 2 E B B Q21 E (J15) (J14) (J12) (J13) ZD1 R4 C Q22 E 1 D40 D22 CHIP SIDE UNIT CODE CN-B B P G (J1) T1 Figure S-3. Printed Wiring Board H 1 2 4 3 H 6 5 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-201FK/W R-203FW R-205FW R-206FW REF. NO. PART NO.
R-201FK/W R-203FW R-205FW R-206FW HOW TO ORDER REPLACEMENT PARTS To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION Order Parts from the authorized SHARP parts Distributor for your area. Defective parts requiring return should be returned as indicated in the Service Policy.
R-201FK/W R-203FW R-205FW R-206FW 2 1 4 3 OVEN AND CABINET PARTS 6 5 7-10 A A 2-1 7-3 7-10 7-10 B B 7-3 1-8 7-10 C 7-9 7-6 4-3 C 1-2 7-10 7-2 7-9 7-7 4-12 4-9 7-10 6-4 1-10 D D 4-4 1-7 1-6 6-3 7-8 4-9 7-5 4-11 1-3 E E 7-10 1-11 4-5 7-2 7-11 F F 4-8 4-1 6-1 7-4 1-1 1-4 4-10 2-2 7-1 G G 1-2 1-5 1-1 7-1 6-2 1-9 2-2 4-7 4-2 4-6 H H 7-2 1 2 4 3 33 5 6
R-201FK/W R-203FW R-205FW R-206FW 2 1 4 3 5 A 6 TOP PAD ASSEMBLY PACKING AND ACCESSORIES A FPADBA454WRKZ DOOR PROTECTION SHEET SPADPA580WRE0 B B POLYETHYLENG BAG SSAKHA014WRE0 6-5 INSTRUCTION BOOK C C 6-1 TURNTABLE TRAY D D MICROWAVE OVEN BOTTOM PAD ASSEMBLY FPADBA455WRKZ 6-2 TURNRTABLE SUPPORT E E INTO THE OVEN CAVITY F F G PACKING CASE SPAKCD701WREZ [R-201FW] SPAKCD732WREZ [R-201FK] FPAK-A420WRKZ [R-203FW] FPAK-A429WRKZ [R-205FW] SPAKCD730WREZ [R-206FW] Not replaceable items.