R-930AK R-930AW SERVICE MANUAL S6710R930APW/ CONVECTION MICROWAVE OVEN MIX CONV DEFROST SENSOR COOK LBS OZ Interactive KG HELP CUSTOM HELP SENSOR REHEAT MINUTE PLUS POPCORN COMPU DEFROST ELEVATE PKG 1 Baked potatoes 2 Frozen vegetables 3 Fresh veg-soft 4 Fresh veg-hard 5 Frozen entrees 6 Hot dogs 7 Bacon 8 Fish, seafood SENSOR COOKT Convection 1 Hamburgers 2 Chicken pieces 3 Steaks 4 Fish steaks COMPU BROIL 1 Chicken 2 Turkey 3 Turkey breast 4 Pork COMPU ROAST 1 Bundt cake 2 Cookies 3 Muff
R-930AK R-930AW 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-930AK R-930AW BEFORE SERVICING Before servicing an operative unit, perform a microwave emission check as per the Microwave Measurement Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS CORPORATION immediately 1- (800) 237-4277.
R-930AK R-930AW 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-930AK R-930AW SERVICE MANUAL PRODUCT DESCRIPTION CONVECTION MICROWAVE OVEN GENERAL INFORMATION R-930AK / R-930AW FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP CONVECTION MICROWAVE OVENS R930AK / R-930AW. 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-930AK R-930AW SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts 13.0 Amperes (Microwave) / 13.0 Amperes (Convection) 60 Hertz / Single phase, 3 wire grounded Power Output 900 watts (IEC 705 Test Procedure) Operating frequency of 2450MHz 1450 Watts Convection Power Output Case Dimensions Cooking Cavity Dimensions (1.5 Cubic Feet ) Control Complement Width 24-5/8" Height 14-7/8" Depth 19-1/8" Width 16-1/8" Height 9-5/8" Depth 16-1/8" Touch Control System Timer (0 - 99 min.
R-930AK R-930AW Electrical Requirements The electrical requirements are a 115 -120 volt 60 Hz, AC only, 15 or 20 amp. fused electrical supply. It is recommended that a separate circuit serving only this appliance be provided. When 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.
R-930AK R-930AW OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. following results. The circuits to the turntable motor, the cooling fan motor, and the high voltage components are de-energized, the oven lamp remains on, and the digital read-out displays the time still remaining in the cook cycle when the door was opened. 7.
R-930AK R-930AW first. And then program desired cooking time by touching the Number pads. The LOW MIX/BAKE pad is preprogrammed for 350˚F with 10% microwave power, while the HIGH MIX/ ROAST pad is preprogrammed for 300˚F with 30% microwave power. When the START pad is touched, the following operations occur: 1. The numbers on the digital read-out start to count down to zero. 2.
R-930AK R-930AW 4. Now, the oven is in the convection cooking mode. 5. When the oven temperature has reached the programmed convection temperature, the oven goes into the programmed cooking mode. 6. At the end of the COMPU BROIL/ ROAST/ BAKE cycle, the damper is returned to the open position and the oven will go to the off condition. The cooling fan will remain on until the oven has cooled. The sensor “senses” the vapor and its resistance increases gradually.
R-930AK R-930AW IMPORTANT: During sensor cooking operation, the fire sensing operation sequence will not begin until the AH sensor has detected vapors and initiated a sensor cooking cycle. This is because the operation of the convection fan would interfere with the AH sensor's vapor detection. SCHEMATIC DIAGRAM SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. MAGNETRON TEMPERATURE FUSE RY1 RY6 RY5 RY4 DM N.O.
R-930AK R-930AW SCHEMATIC DOOR CLOSED. MIX COOKING PAD TOUCHED. COOKING TIME PROGRAMMED. “START” PAD TOUCHED. RY2 AND RY3 WILL ALTERNATELY CLOSE. DURING COOK CYCLE. MAGNETRON TEMPERATURE FUSE A-3 A-1 FM CM COM. (RY1) A-5 RY1 RY6 RY5 RY4 DM N.O. (RY1) RY2 A-9 RY2 PRIMARY INTERLOCK RERAY RY3 CONTROL UNIT 120V 60Hz OUTER CASE SWITCH F-1 SECONDARY INTERLOCK SWITCH F-2 F-3 E-1 E-2 E-3 DOOR SENSING SWITCH AH SENSOR E-4 E-5 E-6 THERMISTOR POWER TRANSFORMER CAPACITOR 0.94µ COM.
R-930AK R-930AW DESCRIPTION AND FUNCTION OF COMPONENTS DOOR SENSING AND SECONDARY INTERLOCK SWITCHES OUTER CASE SWITCHES The two outer case switches are mounted near the power supply cord at the oven cavity rear plate. When the outer case cabinet is installed with the screws, one of the screws pushes the actuator and then the actuator pushes each plungers of the two outer case switches and their contacts are closed.
R-930AK R-930AW Damper is in the closed position, so that no hot air will be allowed to leak out the oven cavity. HEATING ELEMENT The heating element is located at the left side of the oven cavity. It is intended to heat air driven by the convection fan. The heated air is kept in the oven and force-circulated and reheated by the heating element. Damper Operation 1. When power supply cord is plugged in: 1-1.
Replace POSSIBLE CAUSE AND DEFECTIVE PARTS A B MAGNETRON POWER TRANSFORMER C H.V. RECTIFIER ASSEMBLY D E HIGH VOLTAGE CAPACITOR SECONDARY INTERLOCK SWITCH F PRIMARY INTERLOCK SYSTEM G MONITOR SWITCH H I MONITOR FUSE MAGNETRON TEMPERATURE FUSE J CONV. THERMAL CUT-OUT K L CONVECTION HEATER THERMISTOR M DAMPER MOTOR N P DAMPER SWITCH OUTER CASE SWITCH Q TOUCH CONTROL PANEL R KEY UNIT S S RELAY RY-1 RELAY RY-2 S RELAY RY-3 S S RELAY RY-4 RELAY RY-5 S RELAY RY-6 U V FOIL PATERN ON PWB.
R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER A COMPONENT TEST MAGNETRON ASSEMBLY TEST HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD BE OBSERVED. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. 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-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads and check for short or open between the terminals using an ohmmeter. Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate continuity for a short time and should indicate approximately 10 MΩ once the capacitor is charged.
R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST An open temperature fuse indicates overheating of the magnetron assembly, check for restricted air flow to the magnetron through the opening in the chassis, especially the cooling duct and cooling fan. J THERMAL CUT-OUT TEST A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the temperature of thermal cut-out reaches 302˚F(150˚C).
R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST temperature is reached (audible signal sounds four times). The temperature experienced may be approx. 30˚F more or less than indicated on the display, however, in most cases the food cooking results will be satisfactory. Difference in power supply voltage will also affect the oven temperature. The Household power supply voltage may sometimes become lower than the rated voltage (120 V) and cause under-cooking.
R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST If the control unit responds by clearing with a beep the key unit is faulty and must be replaced. If the control unit does not respond, it is a faulty and must be replaced. If a specific pad does not respond, the above method may be used (after clearing the control unit) to determine if the control unit or key pad is at fault.
R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST Problem: POWER ON, indicator does not light up. STEPS 1 OCCURRENCE CAUSE OR CORRECTION The rated voltage is not applied to POWER terminal of CPU connector (CN-A). The rated voltage is applied to primary side of power transformer. Power transformer or secondary circuit defective. Check and repair. 3 Only pattern at "a" is broken. *Insert jumper wire J1 and solder. 4 Pattern at "a" and "b" are broken.
R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of sensor cooking. (6) After approximately 16 seconds, microwave energy is produced, and the display should start to count down the remaining cooking time and oven should turn off after water is boiling (bubbling). If the oven does not turn off, replace the AH sensor or check the control unit, refer to explanation below.
R-930AK R-930AW 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. 4) ACL Circuit A circuit to generate a signals which resetting the LSI to the initial state when power is applied. (1) Key Unit (2) Control Unit 5) Buzzer Circuit The buzzer is responds to signals from the LSI to emit noticing sounds (key touch sound and completion sound).
R-930AK R-930AW DESCRIPTION OF LSI LSI(IZA797DR): The I/O signals of the LSI(IZA797DR) are detailed in the following table. Pin No. Signal I/O 1 2 VCC VEE IN IN 3 AVSS IN 4 VREF IN 5 AN7 IN 6 AN6 IN 7-9 10 AN5-AN3 AN2 IN IN 11 AN1 IN 12 AN0 IN 13 P55 OUT Description Connected to GND. Anode (segment) of Fluorescent Display light-up voltage: -30V. Vp voltage of power source circuit input. Power source voltage: -5V. VC voltage of power source circuit input.
R-930AK R-930AW Pin No. 17 Signal I/O P51 OUT Description Magnetron high-voltage circuit driving signal. To turn on and off the cook relay(RY2). In P-HI operation, the signals holds "L" level during microwave cooking and "H" level while not cooking. In other cooking modes (P-90, P-80, P-70, P-60, P-60, P-50, P-40, P-30, P-20, P-10, P-0) the signal turns to "H" level and "L" level in repetition according to the power level. 18 P50 OUT VARI MODE ON TIME OFF TIME P-HI (100% power) 32 sec. 0 sec.
R-930AK R-930AW Pin No. Signal I/O 34 P26 IN 35 P25 IN 36 P24 IN 37 P23 OUT 38-40 P22-P20 OUT 41 P17 OUT 42 P16 OUT 43 44 45 46 47 P15 P14 P13 P12 P11 OUT OUT OUT OUT OUT Description Signal similar to P27. When any one of G-2 line key on key matrix is touched, a corresponding signal will be input into P26. Signal similar to P27. When any one of G-3 line key on key matrix is touched, a corresponding signal will be input into P25. Signal similar to P27.
R-930AK R-930AW Pin No. 48 Signal P10 I/O OUT 49-53 P07-P03 OUT 54-56 P02-P00 OUT 57-59 P37-P35 OUT 60-64 P34-P30 OUT Description Segment data signal. Signal similar to P23. Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal while one of G-5 line keys on key matrix is touched. Segment data signal. Signal similar to P23. Digit selection signal. Signal similar to P55. Digit selection signal. Signal similar to P55.
R-930AK R-930AW 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-930AK R-930AW COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING AFTER REMOVING OUTER CASE. WARNING FOR WIRING 3) Sharp edge: Bottom plate, Oven cavity, Weveguide flange, Chassis support and other metallic plate. 4) Movable parts (to prevent a fault) Fan blade, Fan motor, Switch, Switch lever, Open button. 3.
R-930AK R-930AW transformer. 5. Disconnect wire leads from the transformer. 6. Remove two (2) screws holding the transformer to the base cabinet. with two screws to the base cabinet, one is with outer tooth washer and the other is without outer-tooth washer. 5. Re-connect the wire leads (primary and high voltage) and high voltage lead to the transformer and filament leads of transformer to the magnetron and capacitor, referring to the “Pictorial Diagram”. 6.
R-930AK R-930AW TURNTABLE MOTOR REMOVAL 1. Disconnect the oven from power supply. Remove the turntable tray, and the turntable support out of the oven cavity. 2. Turn the oven upside down and remove one (1) screw holding the turntable motor cover to the base plate and take off the turntable motor cover. 3. Disconnect wire lead from the turntable motor. 4. Remove the two (2) screws holding the turntable motor and coupling mounting plate to the oven cavity bottom. 5.
R-930AK R-930AW 8. Remove the magnetron air guide from the waveguide. 9. Disconnect wire leads from the fan motor. 10. Release the main harness from the hole of the fan duct. 11. Release the thermistor harness from the hole of the fan duct. 12. Release one (1) tab holding the fan duct to the rear cabinet. 13. Release one (1) tab holding the fan duct to the air guide (Right). 14.Remove the fan duct assembly from the oven. 15.Remove the fan blade from the fan motor shaft according the following procedure.
R-930AK R-930AW DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL 1. Disconnect oven from power supply and remove outer case. 2. Discharge high voltage capacitor. 3. Remove the control panel assembly, refer to "Control Panel Removal". 4. Disconnect wire leads from each of the switches and fuse holder. 5. Remove two (2) screws holding latch hook to oven flange. 6. Remove latch hook assembly from oven flange. 7. Push outward on the one (1) stopper tabs holding each of switches place.
R-930AK R-930AW 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 3 33 4 CN-A RY6 RY4 RY5 RY1 T1 RED BRN BLK ORG ORG BRN BRN RED 5 1 2 3 4 5 6 7 8 9 WHT PPL BRN ORG CN-A RY1 (N.O.) RY1 (COM.) RY2 (N.O.) RY2 (COM.) RY3 (N.O.) RY3 (COM.) BRN RED GRN ORG PNK RED COM SECONDARY INTERLOCK SWITCH 6 GRY TURNTABLE MOTOR PNK GRY G R Y G R Y ORG GRY WHT RED PNK COM W H T COM OUTER CASE SWITCH (Cabinet side) N.O. OUTER CASE SWITCH (Oven side) N.O. BRN GRY CONVECTION MOTOR WHT WHT DAMPER MOTOR Figure S-1.
3 34 OVEN LAMP TURNTABLE MOTOR HEATING ELEMENT 4 COM NO COM NO COM NO A5 FAN MOTOR POWER TRANSFORMER A3 A1 CONV. MOTOR DAMPER MOTOR A7 c RY1 RY3 RY2 RY6 RY5 D2 D3 C2 1000µ/35v C1 0.1µ/50v D23 (J1) ZD2 Q1 2SB1238 470 1/2w + – Q22 KRA101M Q21 KRA101M Q20 KRA101M R3 330 1/2w 5 C11 C3 0.1µ/50v E1 C50 6 Q3 KRA101M R8 4.7k E4 OVEN THERMISTOR E3 R62 75kF F1 (A) (C) F3 AH SENSOR F2 (B) CF1 4.
R-930AK R-930AW 1 2 4 3 5 6 A A R 1 32 DIP ,F B B E Q90 1 2 C10 (C81) R86(J8) (ONLY PHR) (CF1) 32 CF1 (R85) D70 D71 D72 D73 D74 D75 D76 D77 R93 33 R73 R72 R71 R70 B 3 R90 C70 R80 R81 1 (C80) (R45) (C45) C7 R7 R8 C8 3 E E C 5 B Q4 B Q3 1 R79 R78 R77 R76 R75 6 12 C9 R64 64 9 C5 4 5 D 1 8 3 14 R40 1 CN - F 15 17 18 6 R31 R30 BRN D31 D30 C4 E Q1 D23 RY2 1 Q24 E C3 B E E D21 D3 D4 D1 F B D20 4 1 S1 1 5 P VRS1 3 5 7 DAMP M CONV M FAN
R-930AK R-930AW PARTS LIST ◊Refer to "MPORTANT" described at end of parts list. REF. NO. PART NO.
R-930AK R-930AW REF. NO. IC1 IC2 Q1 Q3 Q4 Q20-23 Q24-25 Q26 Q40 Q90 R2 R3 R4 R7-8 R10-11 R30 R31 R40 R50 R51 R62 R63 R64 R70-81 R90-93 R100 RY1-3 RY4-6 SP40 T1 VRS1 ZD2 ZD3 ZD4 3- 2 3- 2 3- 2-1 3- 2-1 3- 2-2 3- 2-2 3- 2-3 3- 3 3- 4 3- 5 3- 6 3- 7 PART NO.
R-930AK R-930AW REF. NO. 4-27 4-28 4-29 4-30 4-31 4-32 4-33 4-34 4-35 4-36 4-37 4-38 4-39 4-40 4-41 4-42 4-43 PART NO.
R-930AK R-930AW REF. NO. 7-24 7-25 7-26 7-27 7-28 PART NO. XOTSD40P12000 XFPSD30P08000 XNESD40-32000 XNEUW40-32000 XWSUW40-10000 DESCRIPTION Q'TY 22 2 2 1 1 Screw; 4mm x 12mm Screw; 3mm x 8mm Nut; 4mm x 3.2mm Nut; 4mm x 3.2mm Washer; 4mm x 1 mm CODE AA AA AA AA AA HOW TO ORDER REPLACEMENT PARTS To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 3. PART NO. 2. REF. NO. 4.
H 1 2 4-31 1-5 7-21 3 40 4-2 4-3 4-23 TO OVEN BASE PLATE 1-13 7-11 4-9 7-11 6-8 4 5 2-3-2 2-3-1 7-5 2-10 A 1-7 2-4 x4 2-7 7-19 1-4 1-6 4-21 2-9 7-22 x4 x4 7-24 1-2 7-13 1-3 1-18 2-6 7-24 x2 4-26 4-38 4-14 1-17 7-2 4-27 1-19 7-4 4-40 1-16 7-6 7-23 4-18 6-7 7-20 6-10 1-9 4-39 1-1 4-17 7-10 2-5 7-24 7-24 7-17 7-16 1-6 7-9 4-20 1-14 4-41 4-19 7-16 7-26 7-2 1-4 4-33 2-2 4-43 4-15 A 7-19 1-4 4-37 4-32 7-2 7-18 4 7-24 7-8 x3
R-930AK R-930AW 2 1 4 3 6 5 CONTROL PANEL PARTS 3-7 3-3 A 3-1 3-2 x2 A 3-6 x3 3-4 7-24 3-2-1 B B 3-5 C C 7-24 3-2-3 5 5-3 D D 3-2-2 5-10 DOOR PARTS 5-10 5-1 E E 5-5 5-2 5-10 5-6 F F 5-7 5-9 5-5 5-4 G 5-8 MISCELLANEOUS G 6-1 6-5 6-4 6-2 H H Actual wire harness may be different than illustration.
R-930AK R-930AW '97 SHARP CORP. (6K2.770E) Printed in U.S.
