R-230KK R-230KW SERVICE MANUAL No. S2501R230KPKW MICROEAVE OVEN MODELS R-230KK R-230KW 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.
CONTENTS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID EXPOSURE TO EXCESSIVE MICROWAVE ENERGY BEFORE SERVICING CHAPTER 1. WARNING TO SERVICE PERSONNEL [1] Before Servicing.......................................... 1-1 [2] When the testing is completed,................... 1-1 [3] After repairing.............................................. 1-1 CHAPTER 2. MICROWAVE MEASUREMENT PROCEDURE [1] Requirements:............................................. 2-1 [2] Preparation for testing:..........
R230KW Service PRECAUTIONS TO BE OBSERVED BEFORE AND Manual DURING SERVICING TO AVOID EXPOSURE TO EXCESSIVE MICROWAVE ENERGY R230KW 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.
R230KW Service Manual CHAPTER 1. WARNING TO SERVICE PERSONNEL R230KW 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.
R230KW Service Manual CHAPTER 2. MICROWAVE MEASUREMENT PROCEDURE R230KW [1] 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. 2.
R230KW CHAPTER 3. FOREWORD AND WARNINGService R230KW Manual [1] FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-230KK and R-230KW. 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. Check the interlock switches and the door seal carefully.
R230KW R230KW CHAPTER 4. PRODUCT DESCRIPTION Service Manual [1] SPECIFICATIONS ITEM Power Requirements Power Consumption Power Output Case Dimensions Cooking Cavity Dimensions (0.8 Cubic feet) Control Complement Oven Cavity Light Safety Standard DESCRIPTION 120 Volts 60 Hertz Single phase, 3 wire grounded 1170W / Approx.
R230KW Service Manual R230KW CHAPTER 5. GENERAL INFORMATION [1] 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.
R230KW 2. TOUCH CONTROL PANEL NOTE: Some one-touch cooking features such as "MINUTE PLUS" are disabled after three minutes when the oven is not in use. These features are automatically enabled when the door is opened and closed or the STOP/ CLEAR pad is pressed.
R230KW Service Manual R230KW CHAPTER 6. OPERATION [1] DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. 1. OFF CONDITION 3. POWER LEVEL COOKING Closing the door activates door sensing switch and secondary interlock switch. (In this condition, the monitor switch contacts are opened.) When Variable Cooking Power is programmed, the 120 volts A.C.
R230KW [2] OVEN SCHENATIC 1. Off Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY THERMAL CUT-OUT (OVEN) NOTE: " " indicates components with potentials above 250V L or TEMPERATURE FUSE (OVEN) FUSE 15A N.O. POWER TRANSFORMER LINE BYPASS CAPACITOR 0.0033µF / AC 250V (RY-2) (RY-1) A3 PRIMARY INTERLOCK RELAY CAPACITOR 0.82µF AC2100V or AC1900V CONTROL UNIT A1 LINE BYPASS CAPACITOR 0.
R230KW [3] DESCRIPTION AND FUNCTION OF COMPONENTS 1. DOOR OPEN MECHANISM 4. TURNTABLE MOTOR The door is opened by pushing the open button on the control panel, refer to the Figure D-1. The turntable motor rotates the turntable located on the bottom of the oven cavity, so that the food on the turntable is cooked evenly. The turntable may turn in either direction. When the open button is pushed, the open button pushes up the switch lever, and then the switch lever pushes up the latch head.
R230KW CHAPTER 7. TROUBLESHOOTING GUIDEService R230KW Manual 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.
R230KW Service Manual R230KW CHAPTER 8. TEST PROCEDURES [1] Procedure A : MAGNETRON ASSEMBLY 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 circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm. 5.
R230KW 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. NOTE: Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6.3 volts. [4] Procedure D : HIGH VOLTAGE CAPACITOR 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.
R230KW 5. Reconnect all leads removed from components during testing. 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. [8] Procedure F : PRIMARY INTERLOCK SYSTEM TEST 1. 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.
R230KW [10] Procedure H : BLOWN MINITOR FUSE 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 primary interlock relay, secondary interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.
R230KW 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. 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.
R230KW G1 G2 G3 G4 6 2 3 5 4 COOK TIMER CLOCK 0 1 SOFTEN 9 8 7 G5 G6 WARM REHEAT DEFROST POWER POPCORN LEVEL STOP CLEAR START MELT MINUTE PLUS G7 Pin NO. G1 Pin NO. G10 Key unit ribbon cable G8 G9 G10 Key unit (Membrane Switch) front view [14] Procedure L : RELAY 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. Disconnect the leads to the primary of the power transformer. 5.
R230KW 4) Follow the troubleshooting guide given below for repair. STEPS 1 2 OCCURRENCE Only pattern at “a” is broken. Pattern at “a” and “b” are broken. CAUSE OR CORRECTION *Insert jumper wire J1 and solder. *Insert the coil RCILF2003YAZZ between “c” and “d”. 5) Make a visual inspection of the varistor. Check for burned damage and examine the transformer with a tester for the presence of layer short-circuit (check the primary coil resistance which is approximately 915Ω±10%).
R230KW Service Manual CHAPTER 9. TOUCH CONTROL PANEL ASSEMBLY R230KW [1] OUTLINE OF TOUCH CONTROL PANEL This circuit consists of 4-digits, 12-segments and 3-common electrodes using a Liquid Crystal Display. The touch control section consists of the following units as shown in the touch control panel circuit. (1) Key Unit 3) Power Source Circuit This circuit generates voltage necessary in the control unit from the AC line voltage.
R230KW Pin No. 24 Signal COM2 I/O OUT 25 26-37 COM3 SEG0-SEG11 OUT OUT 38-40 41 SEG12-SEG14 P70 OUT OUT Description Common data signal. Connected to LCD signal COM2. Terminal not used. Segment data signal. Connected to LCD.The relation between signals are as follows: LSI signal (Pin No.) LCD (segment) LSI signal (Pin No.
R230KW Pin No. 61 62 63 Signal P23 P22 BZO90 I/O OUT OUT OUT Description Terminal not used. Terminal not used. Signal to sound buzzer (2.0 kHz). A: key touch sound. B: Completion sound. 0.1 sec. H : GND A 2.0 sec. L : -5V H : GND B L : -5V 64 P20 OUT Terminal not used. [3] SERVICING FOR TOUCH CONTROL PANEL 1. Precautions for Handling Electronic Components 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.
R230KW Service Manual SOLDER CHAPTER 10. PRECAUTIONS FOR USING LEAD-FREE R230KW [1] Employing lead-free solder The "Main PWB" of this model employs lead-free solder. This is indicated by the "LF" symbol printed on the PWB and in the service manual. The suffix letter indicates the alloy type of the solder. Example: Indicates lead-free solder of tin, silver and copper [2] Using lead-free wire solder When repairing a PWB with the "LF" symbol, only lead-free solder should be used.
R230KW Service AND Manual ADJUSTMENT PROCECHAPTER 11. COMPONENT REPLACEMENT R230KW DURE [1] WARNING 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.
R230KW [2] OUTER CASE REMOVAL To remove the outer case, procedure as follows. 1. Disconnect the power supply cord. 2. Open the oven door and block it open. 3. Remove the two (2) screws from the lower portion of the rear cabinet using a T20H Torx type or GTXH20-100 screw driver. 4. Remove the remaining three (3) screws from the upper portion of the rear and two (2) screws along the right side of outer case. 5.
R230KW [6] POSITIVE LOCK CONNECTOR (NO-CASE TYPE) REMOVAL Terminal 1. Disconnect the power supply cord, and remove outer case. Positive lock¨ connector 2. Open the door and block it open. 1 3. Discharge high voltage capacitor. Push 4. Push the lever of positive lock connector. Lever 5. Pull down on the positive lock connector. CAUTION: WHEN CONNECTING THE POSITIVE LOCK CONNECTORS TO THE TERMINALS, INSTALL THE POSITIVE LOCK SO THAT THE LEVER FACES YOU 2 Pull down Figure C-1.
R230KW [9] POWER SUPPLY CORD REPLACEMENT 1. REMOVAL 7. Now, the power supply cord is free. 1. Disconnect the power supply cord, and remove outer case. 2. REINSTALL 2. Open the door and block it open. 3. Discharge high voltage capacitor. 1. Insert the moulding cord stopper of power supply cord into the square hole of the rear cabinet, referring to the Figure C-3 (b). 4. Remove the single (1) screw holding the green wire to the oven cavity back plate. 2.
R230KW 3. Apply the screw lock tight into the hole (for shaft) of the fan blade. 8. Remove the fan blade assembly from the shaft of the fan motor by pulling and rotating the fan blade with your hand. 9. Now, the fan blade will be free. 4. Install the fan blade to the shaft of fan motor by pushing the fan blade with a small, light weight, ball peen hammer or rubber mallet. CAUTION: DO NOT RE-USE THE REMOVED FAN BLADE BECAUSE THE HOLE (FOR SHAFT) MAY BE LARGER THAN NORMAL.
R230KW 2. 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. Latch Hook Door Door Sensing Switch Latch Heads 2.
R230KW 4. SEALER FILM Pin 1. Put the adhesive tape on the backing film of the sealer film as shown in Fig. C-8 Upper Oven Hinge 2. Tear the backing film by pulling the adhesive tape. Upper Oven Hinge 3. Put the pasted side of the sealer film on the door panel Sealer film Backing film Adhesive tape Slit choke of door panel Lower Oven Hinge Figure C-8. Sealer film Lower Oven Hinge Pin Choke Cover Figure C-7.
R230KW CHAPTER 12. CIRCUIT DIAGRAMS B LK T1 C ONT R OL P ANE L 2 1 C N-B R Y 2 P R IMAR Y INT E R LOC K R E LAY N.O. C OM. GR N GR N C N-B 2 GR Y 1 GR N GR N GR Y GR Y GR Y N.O. DOOR S E NS ING S WIT C H C OM C N-A 3 RED 2 1 GR Y B LK N.C . C OM GR Y WHT RED OR G T E MP E R AT UR E F US E (OV E N) TURNTABLE MOTOR GRY GRY G R N Screw GRY WHT Power Supply Cord GRY FUSE GRY Oven Cavity Back Plate WHT ORG WHT RED Noise Filter WHT RED (WHT) H.V.
Figure S-2. Control Panel Circuit 12 – 2 NO A3 A1 CN-B B2P-VH-B DOOR SW. B2 B1 COM POWER TRANSFORMER AC OVEN LAMP TERNTABLE MOTOR FAN MOTOR AC120V 60HZ AC < POWER UNIT > RY2 DU12D1-1P(M)-R D20 MC2836 - + Q21 DTD143ES - 470uF/25V 10uF/35V + 910 1/2W R4 NOTE D40 MC2836 Q22 DTA123JS - + DOOR M COM BZ VR INT -5V C1 R30 (J14) (J15) AIN3 (J10) (J11) 15K R41 0.1uF / 25V Q20 DTA143EKA C20 Q30 DTA143EKA 0.1uF/25V C10 AIN5 < LSI UNIT > Q10 DTA143EKA R5 ZD1 UDZ4.
R230KW [3] Printed Wiring Board (Figure S-3) Figure S-3.
R230KW PARTS LIST MICROWAVE OVEN 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 R-230KK R-230KW MODEL Parts marked "*" may cause undue microwave exposure. Parts marked " " are used in voltage more than 250V.
R230KW [1] OVEN PARTS 7-8 7-3 2-1 7-8 7-8 7-3 4-6 7-6 7-6 7-8 1-8 7-9 4-9 7-1 1-10 4-11 7-9 1-3 1-2 7-1 7-7 7-6 6-4 1-12 4-4 7-2 4-5 7-6 7-8 4-14 6-3 4-12 7-2 4-8 1-7 6-1 1-6 7-4 4-1 4-10 7-1 4-3 1-1 4-7 1-9 1-2 7-7 7-5 1-1 6-2 1-11 4-2 1-4 2-2 7-1 7-8 2-3 7-2 7-8 7-8 2-3 2 1-5 4-13
R230KW NO.
R230KW [2] DOOR AND CONTROL PANEL PARTS 5-7 5-6 5-1 5-2 5-3 5-5 5-4 3-8 3-1 3-7 3-5 3-1-2 3-4 6-5 3-6 3-1-1 6-6 3-3 3-2 4
R230KW NO.
R230KW INDEX PARTS CODE [ D ] DPWBFC479WRUZ [ F ] FACCDA107WREZ FACCDA108WREZ FDORFA397WRTZ FFS-BA026WRKZ FH-DZA114WRKZ FPNLCB845WRKZ FPNLCB846WRKZ FPWBFA385WRKZ FROLPA101WRKZ FW-VZC044WREZ [ G ] GCABUA958WRPZ GCABUA960WRPZ GCOVHA424WRFZ GDAI-A377WRWZ GLEGPA104WREZ GWAKPA978WRRZ GWAKPA980WRRZ [ H ] HPNL-A833WRRZ HPNL-A835WRRZ [ J ] JBTN-B308WRFZ JBTN-B309WRFZ [ L ] LANGFA267WRPZ LBNDKA168WRPZ LSTPPA205WRFZ LX-CZ0052WRE0 LX-CZA070WRE0 LX-CZA073WRE0 LX-EZA042WRE0 [ M ] MLEVPA241WRFZ MSPRCA050WRE0 MSPRTA187
