Instruction/ maintenance manual of the product R-930AW Sharp
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R-930AK R-930AW 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. TABLE OF CONTENTS CONVECTION MICR O W A VE O VEN Page PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICE TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY .
R-930AK R-930AW PRECA UTIONS T O BE OBSER VED BEFORE AND DURING SER VICING T O A V OID POSSIBLE EXPOSURE T O EXCESSIVE MICR O W A VE ENERGY (a) Do not operate or allow the oven to be operated with the door open.
1 R-930AK R-930AW BEFORE SER VICING 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.
2 R-930AK R-930AW MICR O W A VE MEASUREMENT PR OCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should no.
3 R-930AK R-930AW SER VICE MANU AL CONVECTION MICROWAVE OVEN R-930AK / R-930AW FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Informa- tion for the SHARP CONVECTION MICROWAVE OVENS R- 930AK / R-930AW.
4 R-930AK R-930AW SPECIFICA TION 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.
5 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.
6 R-930AK R-930AW OPERA TION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. OFF CONDITION Closing the door activates the door sensing switch and secondary interlock switch. (In this condition, the monitor switch contacts are opened.
7 R-930AK R-930AW CONVECTION COOKING CONDITION PREHEATING CONDITION Program desired convection temperature by touching the CONVECTION pad and the Temperature pad.
8 R-930AK R-930AW The sensor “senses” the vapor and its resistance increases gradually. When the resistance reaches the value set ac- cording to the menu, supplementary cooking is started. The time of supplementary cooking is determined by experi- ment with each food category and inputted into the LSI.
9 R-930AK R-930AW Figure O-2. Oven Schematic-Microwave Cooking Condition IMPORTANT: During sensor cooking operation, the fire sensing op- eration sequence will not begin until the AH sensor has SCHEMATIC 1. DOOR CLOSED. 2. COOKING TIME PROGRAMMED. 3. “START” PAD TOUCHED.
10 R-930AK R-930AW SCHEMATIC 1. DOOR CLOSED. 2. CONVECTION PAD TOUCHED. 3. DESIRED TEMP. TOUCHED. 4. COOKING TIME PROGRAMMED. 5. “START” PAD TOUCHED. SCHEMATIC 1. DOOR CLOSED. 2. MIX COOKING PAD TOUCHED. 3. COOKING TIME PROGRAMMED. 4. “START” PAD TOUCHED.
11 R-930AK R-930AW 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.
12 R-930AK R-930AW TROUBLESHOO TING GUIDE 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.
13 R-930AK R-930AW A MAGNETRON B POWER TRANSFORMER C H.V. RECTIFIER ASSEMBLY D HIGH VOLTAGE CAPACITOR E SECONDARY INTERLOCK SWITCH F PRIMARY INTERLOCK SYSTEM G MONITOR SWITCH H MONITOR FUSE I MAGNETRON TEMPERATURE FUSE J CONV.
14 R-930AK R-930AW TEST PROCEDURES PROCEDURE LETTER COMPONENT 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.
15 R-930AK R-930AW 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.
16 R-930AK R-930AW 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). The thermal cut-out resets automatically at approximately 266˚F(130˚C).
17 R-930AK R-930AW If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the contacts are closed when the door is closed and open when the door is open.
18 R-930AK R-930AW T COMPU DEFROST TEST (1) Place one cup of water in the center of the turntable tray in the oven cavity. (2) Close the door, touch the "COMPU DEFROST" pad twice and touch the Number pad "5". And then touch the "START" pad.
19 R-930AK R-930AW V AH SENSOR TEST Checking the initial sensor cooking condition (1) The oven should be plugged in at least two minutes before sensor cooking. (2) Room temperature should not exceed 95˚F (35˚C). (3) The unit should not be installed in any area where heat and steam are generated.
20 R-930AK R-930AW Plunger NC NO COM COM NO NC R3 R4 R1 R2 1 2 3 F-1 F-2 F-3 To connector (F) on Control Unit. CONNECTOR 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.
21 R-930AK R-930AW The touch control section consists of the following units as shown in the touch control panel circuit. (1) Key Unit (2) Control Unit The principal functions of these units and the signals communicated among them are explained below.
22 R-930AK R-930AW 1 VCC IN Connected to GND. 2 VEE IN Anode (segment) of Fluorescent Display light-up voltage: -30V. Vp voltage of power source circuit input. 3 AVSS IN Power source voltage: -5V. VC voltage of power source circuit input. 4 VREF IN Reference voltage input terminal.
23 R-930AK R-930AW 17 P51 OUT 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.
24 R-930AK R-930AW 34 P26 IN 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. 35 P25 IN 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.
25 R-930AK R-930AW Pin No. Signal I/O Description 48 P10 OUT 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.
26 R-930AK R-930AW SERVICING approx. 1M ohm Transistor 2SB910M E C B E C B Transistor DTA123ES KRA101M KRA223M KRC243M 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.
27 R-930AK R-930AW COMPONENT REPLA CEMENT 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. OUTER CASE SWITCHES REPLACEMENT Removal 1.
28 R-930AK R-930AW POSITIVE LOCK ® CONNECTOR (NO-CASE TYPE) REMOVAL Push the lever of positive lock ® connector. Pull down on the positive lock ® connector. CAUTION: WHEN YOU CONNECTING THE POSITIVE LOCK ® CONNECTORS TO THE TERMINALS, INSTALL THE POSITIVE LOCK ® SO THAT THE LEVER FACES YOU.
29 R-930AK R-930AW FAN 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.
30 R-930AK R-930AW CONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL To remove the control panel, procedure as follows: 1. Disconnect oven from power supply and remove outer case. 2. Discharge high voltage capacitor. 3. Disconnect connector CN-A, CN-E and CN-F from the control unit.
31 R-930AK R-930AW DOOR REPLACEMENT AND ADJUSTMENT REMOVAL 1. Disconnect oven from power supply and remove the outer case. Remove turntable tray and turntable support from oven cavity. 2. Remove three (3) screws holding lower oven hinge. 3. Remove the lower oven hinge from oven cavity bottom flange.
32 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.
33 R-930AK R-930AW 6 45 1 2 3 6 45 1 2 3 A B C D E F G H A B C D E F G H TURNTABLE MOTOR GRY BRN ORG GRN RED BLK DAMPER MOTOR COOLING FAN MOTOR OUTER CASE SWITCH (Oven side) OUTER.
34 R-930AK R-930AW 6 45 1 2 3 6 45 1 2 3 A B C D E F G H A B C D E F G H Figure S-2. Control Panel Circuit + – + – + – + – + – + – A9 A7 A1 A3 A5 E1 E2 E5 E6 E3 E4 F1 F2 F3 G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8 G 9 G10 G11 G12 NO NO NO COM COM COM VRS1 C1 0.
35 R-930AK R-930AW 6 45 1 2 3 6 45 1 2 3 A B C D E F G H A B C D E F G H Figure S-3. Printed Wiring Board R R 0 1 2 1 31 1 1 1 1 1 65 4 3 2 1 1 135 7 9 45 7 8 3 3 1 4 58 12 12 12 32 33 64 3 4 6 9 13 C.
R-930AK R-930AW 36 P ARTS LIST ◊ Refer to "MPORTANT" described at end of parts list. REF. NO. PART NO. DESCRIPTION Q'TY CODE ELECTRICAL PARTS 1- 1 FACCDA048WRE0 Power supply cord 1 AT.
37 R-930AK R-930AW REF. NO. PART NO. DESCRIPTION Q'TY CODE IC1 RH-IZA797DRE0 LSI 1 AX IC2 RH-IZA495DRE0 IC 1 AL Q1 VS2SB910MR/-4 Transistor (2SB910M) 1 AE Q3 VSKRA101M//-3 Transistor (KRA101M) 1 .
R-930AK R-930AW 38 REF. NO. PART NO. DESCRIPTION Q'TY CODE 4-27 PREFHA053WRW0 Thermal protection plate (Right) 1 AP 4-28 PSKR-A153WRW0 Air guide (Bottom) 1 AK 4-29 PSKR-A323WRW0 Air guide (Right).
39 R-930AK R-930AW 7-24 XOTSD40P12000 Screw; 4mm x 12mm 22 AA 7-25 XFPSD30P08000 Screw; 3mm x 8mm 2 AA 7-26 XNESD40-32000 Nut; 4mm x 3.2mm 2 AA 7-27 XNEUW40-32000 Nut; 4mm x 3.
R-930AK R-930AW 40 6 45 1 2 3 6 45 1 2 3 A B C D E F G H A B C D E F G H OVEN AND CABINET PARTS 1-10 1-11 7-24 2-1 7-24 2-6 7-12 7-16 A 7-4 7-24 1-19 7-24 4-32 7-19 4-33 4-41 4-15 7-26 1-14 7-10 TO OV.
41 R-930AK R-930AW 6 45 1 2 3 6 45 1 2 3 A B C D E F G H A B C D E F G H DOOR PARTS CONTROL PANEL PARTS MISCELLANEOUS 5-3 5-10 5-1 5 Actual wire harness may be different than illustration.
R-930AK R-930AW 42 '97 SHARP CORP. (6K2.770E) Printed in U.S.A.
An important point after buying a device Sharp R-930AW (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sharp R-930AW yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sharp R-930AW - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sharp R-930AW you will learn all the available features of the product, as well as information on its operation. The information that you get Sharp R-930AW will certainly help you make a decision on the purchase.
If you already are a holder of Sharp R-930AW, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sharp R-930AW.
However, one of the most important roles played by the user manual is to help in solving problems with Sharp R-930AW. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sharp R-930AW along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
