TopPage RCD1200M SERVICE MANUAL S3802RCD12MP/ COMMERCIAL MICROWAVE OVEN MODELS R-CD1200M 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 POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY 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 CHAPTER 3. FOREWORD AND WARNING CHAPTER 4. PRODUCT DESCRIPTION [1] SPECIFICATIONS ...............................
RCD1200M RCD1200M Service PRECAUTIONS TO BE OBSERVED BEFORE AND Manual DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY 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.
RCD1200M Service Manual CHAPTER 1. WARNING TO SERVICE PERSONNEL RCD1200M 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.
RCD1200M Service Manual CHAPTER 2. MICROWAVE MEASUREMENT PROCEDURE RCD1200M 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.
RCD1200M CHAPTER 3. FOREWORD AND WARNINGService RCD1200M Manual FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN, R-CD1200M. 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.
RCD1200M CHAPTER 4. PRODUCT DESCRIPTION RCD1200M Service Manual [1] SPECIFICATIONS ITEM Power Requirements Power Consumption Power Output Outside Dimensions Cooking Cavity Dimensions Control Complement Weight Safety Standard DESCRIPTION Single phase, 60Hz, A.C. only 1.
RCD1200M [3] OVEN DIAGRAM 1. OVEN 1. Touch control panels 14 2. Door latch openings 1 10 3. Ceramic shelf 9 4. Splash cover 1 5. Oven light 12 6. Air intake filter 2 7. Air intake openings 4 18 3 5 11 7 15 13 8. Door seals and sealing surfaces 9. Door hinges 10. Oven door with see-through window 17 16 6 8 11. Door latches 15. Power supply cord 12. Door handle 16. Mounting plate 13. Service window for replacing the oven light bulb 17. Screw for mounting plate 14.
RCD1200M CHAPTER 5. OPERATION RCD1200M Service Manual [1] DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. 1. OFF CONDITION 2. The shut-off relay (RY-4) contacts close completing circuits to turn on the oven lamp and antenna motors. (For details, refer to Figure O-1) 3. If the door remains open, 60 seconds later the control unit de-energizes shut-off relay (RY-4) turning off the oven lamp and antenna motors.
RCD1200M [2] OVEN SCHEMATIC 1. Off Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. “ . “ APPEARS ON DISPLAY Figure O-1. Oven Schematic-Off Condition 2. Cooking Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. SELECT TIME PAD TUCHED.. 3. COOKING TIME PROGRAMMED. 4. START PAD TOUCHED. Figure O-2.
RCD1200M [3] DESCRIPTION AND FUNCTION OF COMPONENTS 1. DOOR OPEN MECHANISM 3. If the door is opened, and the contacts of the primary interlock relay and secondary interlock switch of the same circuit fail to open, the monitor fuse blows simultaneously with closing of the monitor switch contacts of that circuit (1 or 2). 1. The handle lever is pulled. 2. The upper and lower latch heads are lifted up by the linked latch lever.
RCD1200M During cooking, they operate. After cooking, they will operate at least for 1 minute and the maximum operating time is 4 minutes. When the temperature of the magnetron thermistor becomes bellow 110°C, the fan motors will stop. These two (2) fan motors are D.C. motors. 4. The large electric currents flow through the high voltage winding of the high voltage transformer. 11. EXHAUST MOTOR 6. The fuse 12A blows by the large electric currents.
RCD1200M CHAPTER 6. TROUBLESHOOTING GUIDEService RCD1200M 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.
6–2 COOKING CONDITION OFF CONDITION CONDITION PROBLEM Oven goes into a cook cycle but shuts down before and off cooking cycle. Oven does not go into cook cycle when START pad is touched. Low or no power is produced during cooking condition. (The food is heated incompletely or not heated at all.) Variable cooking does not operates properly, except HIGH power functions. Fan motor does not operate. Exhaust fan does not operate. Exhaust motor does not operate.
RCD1200M SPECIFICATION OF ERROR Outline When a basic performance and the function are ruined When the dangers of the state of the high temperature and the ignition, etc.
RCD1200M CHAPTER 7. TEST PROCEDURES RCD1200M Service Manual [1] A: MAGNETRON ASSEMBLY TEST 1. Disconnect the power supply cord, and then remove outer case and rear cover. 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.
RCD1200M 5. Reconnect all leads removed from components during testing. A 6. Reinstall the rear cover and the outer case (cabinet). 7. Reconnect the power supply cord after the rear cover and the outer case are installed. 8. Run the oven and check all functions. D2 D1 ASYMMETRIC RECTIFIER C B HIGH VOLTAGE RECTIFIER 2. ASYMMETRIC RECTIFIER TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge two high voltage capacitors. 4.
RCD1200M 7. Reconnect the power supply cord after the rear cover and the outer case are installed. 8. Run the oven and check all functions. NOTE: If the door sensing switch contacts fail in the open position and the door is closed, the blower motor, stirrer motors and oven light will be activated by RY1. 2. PRIMARY INTERLOCK RELAY RY1 1. Disconnect the power supply cord, and then remove outer case and rear cabinet. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4.
RCD1200M [9] I: FUSE 12A (1) (2) TEST 1. Disconnect the power supply cord, and then remove outer case and rear cabinet. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. If the fuse is blown, check the magnetron, high voltage capacitor, high voltage rectifier assembly, according to the “TEST PROCEDURE” before replacing the blown fuse. Then replace the fuse. 5. Reconnect all leads removed from components during testing. 6. Reinstall the rear cover and the outer case (cabinet). 7.
RCD1200M [13] M: NOISE FILTER TEST 1. Disconnect the power supply cord, and then remove outer case and rear cabinet. 2. Open the door and block it open. Source (White) Source (Black) NOISE FILTER DISCHARGE RESISTOR 470K 1/2W 3. Discharge high voltage capacitor. 4. Disconnect the lead wires from the terminal the noise filter. Using an ohmmeter, check between the terminals as described in the following table. If incorrect reading are obtained, replace the noise filter. LINE CROSS CAPACITOR 1.
RCD1200M 7) Reconnect the power supply cord after the rear cover and the outer case are installed. 8) Run the oven and check all functions. [15] O: CONTROL UNIT TEST The following symptoms indicate a defective control unit. Before replacing the control unit, perform the Key units test (Procedure) to determine if control unit is faulty. Connect the power supply cord. And check for followings. 1. In connection with pads. 1) When touching the pads, a certain group of pads do not produce a signal.
RCD1200M 1) If it is open, the relay unit is defective. 6. Check the open and /or short of the transformer primary coil on the relay unit. 1) If it is open and /or short, it is defective. 7. Check the state of the relays contacts RY-1, RY-2 and RY-3 using an ohmmeter. 1) The relay contacts should be open. If not so, the relay unit is defective. [18] R: ANTENNA SENSOR TEST There is no test procedure for the antenna sensor.
RCD1200M Service Manual CHAPTER 8. TOUCH CONTROL PANEL ASSEMBLY RCD1200M [1] SPECIAL FUNCTION FOR SERVICING This oven has the special functions for servicing as shown in the table 1 ~ 4. By using the special function, service person can check the using time or the using number of times for the electrical parts. Also service person can check the AC supply voltage and /or set the standard voltage. When “SF-2” is selected, the display will show the total cooking number of times. Table 1.
RCD1200M For example: Procedure to check the total cooking number of times (example, 957700 times) and using time (example, 1260 hours) of MG 1 and set 0 hours after MG1 is replaced. : no sound {: 0.1 second sound : 2.0 second sound ✩: [(0.04 sec. ON, 0.04 sec. OFF) x 3] x 4 beeps : (0.1 sec. ON, 0.1 sec. OFF) x 10 beeps Operation (within 20 sec.) : (0.06 sec. ON, 0.06 sec. OFF) x 2 beeps Display . . . . SF- SELECT POWER SET MEMORY START STOP/CLEAR Indicator SF2 9577 2 (after 1 sec.
RCD1200M 3. Exhaust thermistor check (SF-6) You can check if the exhaust thermistor works correctly or not by using this function. For example: In case the exhaust thermistor works correctly (275ml water load is necessary.), the display will show “OH” as follows. Operation plug in Display . Indicator Sound (within 20 sec.) (within 20 sec.) SELECT POWER . SET MEMORY START STOP/CLEAR . . SF- 6 START SF-6 5.00 (count down) ON or OH or (after 5 min.
RCD1200M [2] SERVICING FOR BRINTED WIRING BOARDS 1. Precautions for Handling Electronic Components b) On some models, the power supply cord between the printed wiring boards and the oven proper is long enough that they may be separated from each other.
RCD1200M Manual SOLDER CHAPTER 9. PRECAUTIONS FOR USINGService LEAD-FREE RCD1200M 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 Using lead-free wire solder When repairing a PWB with the “LF” symbol, only lead-free solder should be used.
RCD1200M Service AND Manual ADJUSTMENT PROCECHAPTER 10. COMPONENT REPLACEMENT RCD1200M DURE [1] WARNINGS 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.
RCD1200M 12.Now, the rear cover with the fan motor and exhaust cover is free. 10.Remove the eight (8) screws holding the rear cover and exhaust cover to the bottom plate, power supply cord angle, intake duct and exhaust duct. NOTE: Do not forget to re-connect the wire leads to the exhaust fan when the rear cover and outer case cabinet are reinstalled. 11.Remove the rear cover with the fan motor and exhaust cover from the oven cavity. [3] POWER TRANSFORMERS (1) AND/OR (2) REMOVAL 5.
RCD1200M CAUTION: 1) DISCHARGE THE TWO HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. 3. Discharge two high voltage capacitors. 4. Remove the two (2) screws holding the capacitor unit angle to the intake duct assembly or the exhaust duct assembly. 2) DO NOT REPLACE ONLY THE HIGH VOLTAGE RECTIFIER. IF IT IS DEFECTIVE, REPLACE THE HIGH VOLTAGE RECTIFIER ASSEMBLY. 5. Remove one (1) screw holding the capacitor band to capacitor unit angle. 6.
RCD1200M [9] EXHAUST FAN REMOVAL 1. Disconnect the power supply cord and then remove the outer case and the rear cover, referring to “OUTER CASE AND REAR COVER REMOVAL”. 4. Make sure that the connector of the exhaust fan has been disconnected from the wire harness. 2. Open the oven door and block it open. 5. Remove the four (4) screws and the two (2) nuts holding the exhaust fan. 3. Discharge the two high voltage capacitors. 6. Now, the exhaust fan is free. [10] FAN MOTORS REMOVAL 5.
RCD1200M NOTE: 1) Before attaching a new key unit, remove remaining adhesive on the panel fixing plate surfaces completely with a soft cloth soaked in alcohol. Cushion 2) When attaching the key unit to the panel fixing plate, adjust the lower edge and left edge of the key unit to the correct position of panel fixing plate. Vinyl tape (W 20mm x L 520mm) 3) Stick the key unit firmly to the panel fixing plate by rubbing with soft cloth to prevent scratching.
RCD1200M 2. After adjustment, check the following. 1. In and out play of door remains less than 0.5mm when in the latched position. Latch lever Switch lever A Latch hook 2. The door sensing switch and secondary interlock switches (1), (2) interrupt the circuit before the door can be opened. Monitor switch (2) 3. Monitor switches (1), (2) contacts close when door is opened. Latch head 4. Re-install outer case and check for microwave leakage around door with an approved microwave survey meter.
RCD1200M [18] DOOR DISASSEMBLY 1. CHOKE COVER REMOVAL 3) Stick the key unit firmly to the key fixing plate by rubbing with soft cloth to prevent scratching. 1. Remove the door assembly from oven cavity, referring to “DOOR REMOVAL”. 4. SWITCH UNIT REMOVAL 2. Insert a putty knife (thickness of about 0.5mm) at the three (3) positions in gap between the choke cover and the door panel of the latch heads side as shown in the fig.C-6, to free engaging parts. After removing door panel; 1.
RCD1200M 8. DOOR CASE REMOVAL 9. NOTE FOR POSITION OF HARNESS AND PIPE After removing door panel; Before the door panel is reinstalled, make sure that the pipe should be positioned at the correct place. And the harness should pass through the holder of the door frame and the pipe, as shown in Fig.C-7. 1. Remove the five (5) screws holding the key fixing plate to the door frame. 2. Remove the key fixing plate from the door frame. 3.
RCD1200M CHAPTER 11. CIRCUIT DIAGRAMS RCD1200M Service Manual [1] Figure S-1. Pictorial Diagram Gray Magnetron temp.fuse (1) Red Magnetron (1) Magnetron thermistor (1) Blue (Blue case) This main wire harness should be back to the original position as shown in Rear view, after the wire leads are connected to the magnetron thermistor (2).
RCD1200M High voltage rectifier (1) High voltage capacitor (1) Magnetron (1) Asymmetric rectifier (1) Main wire harness Power transformer (1) White/White Blue High voltage capacitor (2) CPU harness High voltage rectifier (2) Oven lamp socket Asymmetric rectifier (2) Magnetron (2) LEFT SIDE VIEW Power transformer (2) Wiring of high voltage components Sensor harness White/Orange/Blue Sensor harness Connector CN-F Green/Yellow Microwave sensor Antenna sensor (1) CPU harness Red/Blue Exhaust
RCD1200M 1 BRN 2 3 WHT CN1 Main wire harness NOTE: The red and blue wire leads to the cabinet side terminals of RY2 and RY3 should go through inside the core of CT1 Cook relay (1) RY2 RED RED Cook relay (2) RY3 BLU (Blue case) Primary interlock relay RY1 Main wire harness Main wire harness BLU (Blue case) BRN BLK YLW BLK 1 GRN 2 RED DC harness 12 CN-E CT1 DC harness 12 GRN 1 2 ORG 3 CN-C Grounding wire YLW YLW YLW YLW YLW YLW YLW YLW YLW YLW YLW YLW RED 13 12 11 10 9 8 7 6 5 4 3 2 1 1 BLK
3 TH1 L1 Q1 FB1 R8 D5 R7 5 NC DRV 3 PC1B 3 4 IC1 VCC HV 6 8 D7 C6 C10 + D2 D4 D1 D3 2 VZ3 VZ2 R3 R4 R5 R6 R11 D6 2 D8 C11 R1 R2 C13 7 8 10 2 12 T1 VZ1 4 3 4,5 D21 C21 C14 R21 C22 + IC21 2 1 ZD21 R23 PC1A C23 L21 F21 C24 1 2 CN21 Output CD1 C9 + C8 R9 C5 + C1 C12 R22 1 F1 C7 7 CS 1 2 FB CN1 1 ADJ R10 GND 4 ZD1 ZD2 R24 R25 R26 11 – 4 R27 Input RCD1200M [2] Figure S-2.
RCD1200M [3] Figure S-3. Relay Unit Circuit 1 8 4 6 NOTE: IF NOT SPECIFIED : 1/4W J% T1 RTRNPA162DR : 1SS133 CN-D 1N4002x4 1 D-5 RY4 D-7 24V-2 D-2 ZD291 HZ12B1 510F PCJ-124D3M CN-E SW POWER UNIT GND-1 D244 OL D-12 RY4 AC1 3 O.L. AM1 AM2 V-SENS 470F R291 10K 5 AC120V R292 R293 D294 C291 470uF/25V D293 T3.
F-4 F-6 F-19 F-17 RY2 RY3 H-1 H-2 H-3 1/4W 100 R161 13 14 15 16 12 8 7 Q41 18 Q43 KRC101S Q42 KRC101S Q44 6 5 R1100K14 IC101 7 3.32KD 3 + 4.7K C41 R104 1 IC101 4 KA358 8 19 10K R91 P34 P35 P36 P54 VCH 51KF 4.7K (D11) KRC101S R51 R103 2 1.8KF R101 2 R163 5 Q172 4 6 11 1/4W 10K KRC106S 3 11 11 10 (Q11) 1/4W 18K 4.7K R95 4.7K 4.
RCD1200M [5] Figure S-5.
RCD1200M PartsGuide PARTS LIST COMMERCIAL 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 MODEL R-CD1200M Parts marked "*" may cause undue microwave exposure. Parts marked " " are used in voltage more than 250V.
RCD1200M [1] OVEN PARTS 7-15 6-13 7-21 4-63 4-12 7-21 4-34 2-3 2-2 4-64 7-15 2-2-1 7-25 x2 7-13 x2 4-63 7-21 4-11 7-21 6-15 4-48 7-21 1-18 4-48 4-60 7-21 4-10 7-26 x2 7-21 2-8 2-10 Vinyl insulation tape: 20mm (W) x 520mm (L) Please get the vinyl insulation tape from a local vender 7-29 4-50 7-21 4-2 7-21 7-21 4-69 4-59 4-62 7-21 4-36 4-61 7-21 2-9 4-36 7-21 4-70 4-9 1-10 1-11 7-4 1-11 1-23 7-15 7-21 7-21 7-28 7-4 6-10 1-20 7-16 4-37 4-53 4-1 4-17 1-15 1-22 7-2 7
RCD1200M NO.
RCD1200M NO.
RCD1200M [2] DOOR AND CONTROL PANEL PARTS 3-5 3-2 3-4 3-5 3-3-6 3-3-8 3-3-3 3-3-4 3-1 3-3-2 3-4 3-3-1 3-3-7 5-8 3-3-8 3-3-5 5-34 5-20 5-17 5-28 5-18 5-6 5-3 5-2 5-3-2 5-34 5-3-1 5-18 5-17 5-19 5-5 5-7 5-21 5-33 5-14 5-30 5-25 5-26 5-31 5-29 5-11 5-9 5-27 5-7 5-32 5-24 5-10 5-13 5-16 5-7 5-12 5-15 5-16 5-11 6-2 5-32 5-35 6-1 6-9 5-1 6-8 6-3 6-12 6-4 6-7 6-5 5
RCD1200M NO.
RCD1200M INDEX PARTS CODE [ D ] DDAI-A214WRKZ DDUC-A071WRKZ DDUC-A072WRKZ DH-HZA017WRKZ DPWB-A565DRKZ DPWB-A568DRKZ DPWB-A569DRKZ DPWB-A570DRKZ DPWB-A571DRKZ DPWB-A573DRKZ [ F ] FACCDA122WREZ FANGKA225WRYZ FCAS-A026WRYZ FCOV-A018WRKZ FDORFA436WRYZ FDTCTA239WRKZ FFIL-A014WRKZ FFS-BA033WRKZ FFTASA076WRYZ FGLSPA069WRFZ FH-DZA145WRZZ FHNG-A370WRYZ FMOT-A031WRKZ FPLT-A025WRYZ FPLT-A026WRYZ FPWBFA383WRKZ FUNTKB179WREZ FUNTKB180WREZ FW-VZC153WREZ FW-VZC155WREZ FW-VZC157WREZ FW-VZC160WREZ FW-VZC168WREZ FW-VZC169W
RCD1200M PARTS CODE PSKR-A464WRPZ [ Q ] QFS-BA011WRE0 QFSHDA009WRE0 QFS-TA014WRE0 QFS-TA015WRE0 QSOCLA026WRZZ QSW-MA085WRE0 [ R ] RC-QZA322WRZZ RLMPTA086WRZZ RMOT-A016WRZZ RMOT-A026WRZZ RMOTDA209WRE0 RTRN-A768WRZZ RV-MZA358WRZZ [ T ] TCADRA030WRRZ TCAUAA312WRRZ TCAUAA313WRRZ TCAUAA314WRRZ TCAUAA315WRRZ TCAUAA316WRRZ TINSEB154WRRZ TMAPCA783WRRZ [ X ] XBPS730P28KS0 XBPS740P25K00 XBPS740P35000 XBTUW40P12000 XCBWW30P08000 XCHWW40P08000 XCPS730P08XS0 " XCPS740P08000 XEPS730P08XS0 XEPS740P08000 XEPS740P10000 XETS
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