Microwave Technical Bulletin Sharp Electronics Corporation Services and Support Group 1300 Naperville Drive Romeoville, IL 60446 Number: MW-174 Date: July 2003 Model(s): R-1850/51, R1855A, R1870/71/72 SUBJECT: Service manual correction. Please see the chart below for service manual correction.
Microwave Technical Bulletin Sharp Electronics Corporation Services and Support Group 1300 Naperville Drive Romeoville, IL 60446 Number: MW-186 Date: December 2003 Model(s): R1200 / R1201 / R1210 / R1211 / R1214 / R1405 / R1406 / R1500 / R1501 / R1502 / R1505 / R1506 / R1510 / R1511 / R1512 / R1514 / R1600 / R1601 / R1602 / R1610 / R1611 / R1612 / R1750 / R1751 / R1752 / R1754 / R1850 / R1851 / R1852 / R1850A / R1851A / R1852A / R1855A / R1870 / R1871 / R1872 / R1874 / R1875 SUBJECT: Part substitution T
R-1855A SERVICE MANUAL S99M138R1855E OVER THE RANGE MICROWAVE OVEN MODEL R-1855A 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. This model for the US and Canada markets, Please refer to the appropriate pages for service information. TABLE OF CONTENTS Page PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICE TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ..................
R-1855A 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-1855A 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 outer case. 2. Open the door and block it open. 3.
R-1855A MICROWAVE MEASUREMENT PROCEDURE (USA) 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-1855A MICROWAVE MEASUREMENT PROCEDURE (CANADA) After adjustment of the door switches are completed individually or collectively, switch test and microwave leakage test must be performed with survey instrument and test result must be confirmed to meet the requirement of the performance standard for microwave ovens as undermentioned. A.
R-1855A SERVICE MANUAL OVER THE RANGE PRODUCT DESCRIPTION MICROWAVE OVEN R-1855A GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP OVER THE RANGE MICROWAVE OVEN, R-1855A. 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.
R-1855A SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 13.2 Amperes (Microwave), 13.2 Amperes (Convection) 60 Hertz Single phase, 3 wire grounded Power Output 850 watts (IEC-705 TEST PROCEDURE) Operating frequency of 2450MHz Convection Power Output 1400 watts Case Dimensions Width 29-15/16" Height 16-11/32" Depth 15- 9/32" Cooking Cavity Dimensions Width 17-1/8" Height 8-1/16" Depth 13-13/16" 1.
R-1855A Electrical Requirements The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE GROUNDING PIN FROM THE PLUG. The power supply cord and plug must be connected to a separate 120 Volt AC, 60 Hz, 15 Amp. or more branch circuit, using a grounded receptacle. The receptacle should be located inside the cabinet directly above the Microwave Oven/Hood system mounting location.
R-1855A OPERATION DESCRIPTION OF OPERATING SEQUENCE (1) When the door opens from a closed position, the primary interlock relay, door sensing switch, secondary interlock switch and third door switch open their contacts, and then the monitor switch contacts close. (2) When the door is closed from the open position, the monitor switch contacts first open, and then the contacts of the secondary interlock switch and third door switch close.
R-1855A touched, the following operations occur: 1. The numbers on the digital read-out start to count down to zero. 2. The shut-off relays (RY1, RY4, RY5 and RY7) are energized, turning on the oven lamp, turntable motor, cooling fan motor and convection motor. 3. The shut-off relay (RY6) is energized. The damper plate is closed from the open position. 4. The heater relay (RY3) is energized, applying the main supply voltage to the heating element. 5. Now, the oven is in the convection cooking condition. 6.
R-1855A The time of supplementary cooking is determined by experiment with each food category and inputted into the LSI. An example of how sensor works: automatically compute the oven temperature, microwave power and cooking time for broiling, roasting and baking. Set the desired program by touching one of the COMPU BROIL, COMPU ROAST or COMPU BAKE pad, and number pad. Enter the weight by touching the Number pads. When the START pad is touched, the following operations occur: 1.
R-1855A 3. RE-CIRCULATION (INSIDE VENTING) The air handing is same as VERTICAL VENTING except that the final air discharge is directed horizontally through the upper front of the oven into the kitchen. IN this case, the accessory charcoal filter lit RK-220 must be provided to filter the air before it leaves the oven. the relays to the power transformer and fan motor. The LSI also stops counting down and closes the damper door so that no fresh air will enter the oven cavity. 3.
R-1855A SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. RY5 RY7 C1 BRN RY2 HOOD LAMP HL HL E6 E3 BLK WHT-WHT WHT WHT BRN STIRRER MOTOR POWER TRANSFORMER E4 F1 F2 F3 COM RY1 WHT WHT GRY GRY CONTROL UNIT HIGH VOLTAGE CAPACITOR 0.9 F HIGH VOLTAGE RECTIFIER AH SENSOR RED YEL GRY BLU NOISE FILTER BLK E2 E5 STM RED E1 DAMPER SWITCH RY1 RY3 BRN BLK N.O. RY3 THERMISTOR GRN COM RY3 PNK COM RY2 PPL RED BRN PPL BRN WHT N.O.
R-1855A SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CONVECTION PAD TOUCHED. 3. DESIRED TEMP. TOUCHED. 4. START PAD TOUCHED. RY5 RY4 RY7 E6 E3 BLK WHT-WHT WHT WHT BLK BRN BLK E2 E5 STM STIRRER MOTOR POWER TRANSFORMER RED E1 E4 RY1 C1 BRN RY2 HOOD LAMP HL HL F1 F2 F3 HIGH VOLTAGE CAPACITOR 0.9 F HIGH VOLTAGE RECTIFIER CONTROL UNIT COM RY1 WHT WHT GRY GRY AH SENSOR RED YEL GRY BLU NOISE FILTER DAMPER SWITCH THERMISTOR GRN N.O.
R-1855A SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. RY4 RY7 BLK BLK E6 E3 WHT-WHT WHT WHT BRN BLK E2 E5 STM STIRRER MOTOR POWER TRANSFORMER RED E1 DAMPER SWITCH E4 RY1 C1 RY3 RY2 BRN BRN BLK N.O. RY3 THERMISTOR GRN COM RY3 PNK COM RY2 PPL RED N.O. B7 RY1 BRN PPL BRN WHT B1 GRY WHT BLK WHT RY5 ORG ORG BLK ORG ORG B3 MONITOR SWITCH OVEN OL LAMP DOOR SENSING SWITCH THIRD DOOR SWITCH F2 F3 HIGH VOLTAGE CAPACITOR 0.
R-1855A SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CONVECTION PAD TOUCHED. 3. DESIRED TEMP. TOUCHED. 4. START PAD TOUCHED. RY5 RY4 E5 E6 E3 BLK WHT-WHT WHT WHT BRN BLK E2 STM STIRRER MOTOR POWER TRANSFORMER RED E1 DAMPER SWITCH THERMISTOR BLK GRN PNK N.O. RY3 E4 RY1 C1 RY3 RY2 BRN BRN BLK ORG RY7 COM RY3 PPL RED COM RY2 BRN PPL N.O.
R-1855A DESCRIPTION AND FUNCTION OF COMPONENTS operate inversely.) 3. If the door is opened, and the primary interlock relay, secondary interlock switch and third door switch contacts fail to open, the monitor fuse blows simultaneously with closing of the monitor switch contacts. CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK RELAY, THIRD DOOR SWITCH, DOOR SENSING SWITCH, MONITOR SWITCH AND SECONDARY INTERLOCK SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE").
R-1855A Damper Operation 1. When power supply cord is plugged in: 1-1. When power supply cord is plugged in, a signal is sensed in the control unit, and operates shut-off relay (RY6). 1-2. Contacts of shut-off relay (RY6) close, the damper motor is energized, opening the damper plate. 1-3. When the damper is moved to the open position by the damper cam the damper switch is closed (ON position). 1-4. The signal from damper switch is re-sensed in the control unit and shut-off relay (RY6) is turned off. 1-5.
R-1855A 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-1855A TROUBLESHOOTING 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. Home fuse blows when power cord is plugged into wall receptacle. Monitor fuse blows when power cord is plugged into wall receptacle.
19 NOISE FILTER LOW VOLTAGE NO POWER AT OUTLET SHORTED IN POWER CORD SHORTED OR OPENED WIRING HOOD MOTOR CAPACITOR HOOD LAMP OR SOCKET CONVECTION MOTOR TURNTABLE OFF CONDITION STIRRER MOTOR TURNTABLE MOTOR FAN MOTOR OVEN LAMP OR SOCKET AH SENSOR FOIL PATTERN ON PWB.
R-1855A TEST PROCEDURES PROCEDURE LETTER A COMPONENT TEST MAGNETRON ASSEMBLY TEST 1. 2. 3. 4. 5. 6. 7. 8. 9. Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. 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-1855A 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-1855A TEST PROCEDURES PROCEDURE LETTER F G COMPONENT TEST PRIMARY INTERLOCK RELAY (RY2) 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 two (2) wire leads from the male tab terminals of the Secondary Interlock Relay. Check the state of the relay contacts using a ohmmeter. The relay contacts should be open. If the relay contacts are closed, replace the circuit board entirely or the relay itself. 5.
R-1855A TEST PROCEDURES PROCEDURE LETTER I COMPONENT TEST BLOWN MONITOR FUSE 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 monitor fuse is blown when the door is opened, check the secondary interlock relay, secondary, primary switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.
R-1855A TEST PROCEDURES PROCEDURE LETTER M COMPONENT TEST HOOD FAN MOTOR 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 motor does not turn, touch the HOOD FAN button once (set hood fan motor power "HIGH") and check voltage between pins "1" and "2" (Blue and Black wires) of the 6 pin connector. If 120 Volts appear and the hood capacitor is good, replace the hood fan assembly.
R-1855A TEST PROCEDURES PROCEDURE LETTER P COMPONENT TEST CHECKING TEMPERATURE IN THE CONVECTION MODE 1. 2. 3. 4. 5. 6. 7. 8. Q Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. It is difficult to measure the exact temperature in the convection oven. An accurate thermocouple type temperature tester must be used. A low priced bi-metal type thermometer is not reliable or accurate.
R-1855A TEST PROCEDURES PROCEDURE LETTER Q COMPONENT TEST TOUCH CONTROL PANEL ASSEMBLY TEST 2. Control Unit. The following symptoms indicate a defective control unit. Before replacing the control unit, perform the Key unit test (Procedure R) to determine if control unit is faulty. 2-1 In connection with pads. a) When touching the pads, a certain group of pads do not produce a signal. b) When touching the pads, no pads produce a signal.
R-1855A TEST PROCEDURES PROCEDURE LETTER S COMPONENT TEST 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. 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. Remove the outer case and check voltage between Pin No.
R-1855A TEST PROCEDURES PROCEDURE LETTER U COMPONENT TEST PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD PWB IS OPEN To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the PWB, this foil pattern acts as a fuse. 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.
R-1855A TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST Water load cooking test Make sure the oven has been plugged in at least five minutes before checking sensor cook operation. The cabinet should be installed and screws tightened. (1) Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup. (2) Place the container on the center of tray in the oven cavity. (3) Close the door. (4) Touch SENSOR COOK pad. And touch the number pad 1. And touch the start pad.
R-1855A TEST PROCEDURES PROCEDURE LETTER W COMPONENT TEST NOISE FILTER TEST 1. 2. 3. 4. 5. Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. Disconnect the leads to the primary of the power transformer. Using an ohm-meter, check between the terminals as described in the following table: NOISE FILTER UNIT MONITOR FUSE NOISE SUPPRESSION COIL LINE CROSS CAPACITOR 0.
R-1855A 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. 3) Synchronizing Signal Circuit The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit. It incorporates a very small error because it works on commercial frequency.
R-1855A DESCRIPTION OF LSI LSI(IZA719DR) The I/O signals of the LSI(IZA719DR) are detailed in the following table. Pin No. Signal I/O Description 1 VCC IN Connected to GND. Anode (segment) of Fluorescent Display illumination voltage: -31V. 2 VEE IN 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. A reference voltage applied to the A/D converter in the LSI. Connected to GND.
R-1855A Pin No. Signal I/O 18 P50 OUT 19 P47 OUT 20 P46 OUT 21 P45 OUT 22 P44 OUT 23 P43 OUT 24 P42 IN 25 INT1 IN Description Convection motor driving signal. H. GND During OFF cooking To turn on and off shut-off relay(RY7). "L" level during (Convection) ON L CONVECTION; "H" level otherwise. Hood lamp driving signal. H : GND OFF To turn on and off relay(RY8). "L" level: During Hood L ON lamp ON. "H" level: During Hood lamp OFF. Hood motor driving signal.
R-1855A Pin No. 31 Signal XOUT I/O OUT 32 VSS IN 33 P27 IN 34 P26 IN 35 P25 IN 36 P24 IN P23-P20 OUT 37-40 Description Internal clock oscillation frequency control output. Output to control oscillation input of XIN. Power source voltage:-5V. VC voltage of power source circuit input. Signal coming from touch key. When any one of G12 line keys on key matrix is touched, a corresponding signal will be input into P27. When no key is touched, the signal is held at "L" level.
R-1855A Pin No. Signal 56 57-59 60-64 I/O P00 OUT P37-P35 P34-P30 OUT OUT Description Key strobe signal. Signal applied to touch-key section. A pulse signal is input to AN1 and P27 - P24 terminal while one of G2 line keys on key matrix is touched. Segment data signal. Signal similar to P55. Key strobe signal. Signal applied to touch-key section. A pulse signal is input to AN1 and P27 - P24 terminal while one of G1 line keys on key matrix is touched. Segment data signal. Signal similar to P55.
R-1855A SERVICING B. On some models, the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other.
R-1855A 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.. Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven. 1.
R-1855A REMOVAL OF OVEN FROM WALL (Two persons recommended to remove the oven) 1. Disconnect the power supply cord, and uncoil the power supply cord. 2. Remove the turntable tray and support from the oven cavity. 3. Remove the two (2) screws holding the oven (outer case cabinet) to the top cabinet. 4. Remove the two (2) grease filters from the base cover. 5. While supporting the front of the oven, unfasten the two (2) unit mounting screws holding the oven to the unit mounting plate. 6.
R-1855A 10.Now, the hood fan motor is free. 11.Remove the hood exhaust duct from the oven cavity by lifting it up 12.Screw the oven lamp off from the lamp socket. 13.Remove the lamp socket from the lamp angle of the top duct by releasing the two (2) tabs of the oven lamp socket. 14.Pull the wire leads from the oven lamp socket by pushing the terminal hole of the oven lamp socket with the small flat type screw driver. 15.Now, the oven lamp socket is free. 16.
R-1855A GROUNDING SCREW. 9. Remove one (1) screw holding the fan duct assembly to oven cavity. 10.Release the fan duct assembly from the oven cavity. 11.Remove the fan blade from the fan motor shaft according the following procedure. 1) Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers. CAUTION: * Make sure that any pieces do not enter the gap between the rotor and the startor of the fan motor because the rotor is easily shaven by pliers and metal pieces may be produced.
R-1855A TURNTABLE MOTOR AND COUPLING REMOVAL 1. Disconnect the power supply cord. 2. Open the door and block it open. 3. Remove the three (3) screws holding the base cover to the oven cavity 4. Remove the base cover from the oven cavity by pulling down and moving to the left slightly. 5. Disconnect the wire leads from the turntable motor. 6. Remove two (2) screws holding turntable motor to the oven cavity. 7. Now the turntable motor is free. 8.
R-1855A 15.Remove the one (1) screw holding the key fixing plate to the control panel. 16.Release the four (4) tabs holding the key fixing plate to the control panel. 17.Remove the key fixing plate from the control panel. 18.Tear the key unit from the key fixing plate. 19.Now, the key unit is free 4. Insert the bottom edge of the display board under the tab of control panel as shown in step 4. 5. PLace the top edge of the display board on the clip (F).
R-1855A CONVECTION DUCT ASSEMBLY REMOVAL 1. Disconnect power supply cord, remove the oven from wall and remove outer case. (Refer to procedure of "Removal of Oven from Wall" and Outer case Removal") 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Lift the left mounting screw off the tab and slide it down from the base plate left. 5. Remove the one (1) screw holding the exhaust duct to the top duct. 6. Remove the exhaust duct from the oven cavity. 7.
R-1855A 3. Secure the latch hook (with two (2) mounting screws) to oven cavity front flange. 4. Make sure that the monitor switch is operating properly and check continuity of the monitor circuit. Refer to chapter "Test Procedure" and "Adjustment procedure". And install the hood intake duct R, hood exhaust duct and outer case. diagram.
R-1855A microwave energy from oven cavity during cook cycle. This function does not require that door be air-tight, moisture (condensation)-tight or lighttight. 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. 6. Re-install the door stopper to the door assembly. 7. Re-install the sash left to the oven cavity front face plate. 8.
1 PNK WHT BRN 2 GRN N.O. GRN YLW 5 RED BLK 3 BLK RED 4 YLW BLU 3 WHT PPL 2 BLK GRY 1 BLU WHT 2 WHT 1 GRN STIRRER MOTOR PNK GRN COM. Power Supply cord 120V 60Hz TEMPERATURE FUSE (MG.) R E D BLK DOOR SENSING SWITCH WHT GRN RY2:Primary Interlock Relay GRN Y L W O R G B R N 2 2 to oven cavity front flange R-1855A HOOD FAN MOTOR 6 BLK 1 BLK A 5 4 3 B BLK C 1 CN-E 6 D E F G H AH.
C7 R7 4.7k C6 10µ/35v C8 R8 4.7k C9 0.1µ/50v D28 5 RY3 Q28 KRA101M NO D29 CONVECTION HERTER COM R30 15k D32 COM R31 4.7k R62 36kF C60 Q60 KRC101M CF1 4MHz (A) (B) Q29 KRA101M 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 22 23 24 25 26 27 28 29 1G 2G 3G 4G 5G 6G 7G 8G R93 100k R91 100k R92 100k G2 G3 G4 G5 G6 R82 3.3k D76 R81 D75 3.3k D74 3.3k 3.3k D73 R80 R79 R78 3.3k D72 D71 R77 3.
R-1855A 2 1 4 3 5 6 A A R 0 TAPE B B 27 28 2 1 32 1 20 21 22 23 24 25 26 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 69 29 30 31 32 33 34 C 1 70 R100 B C30 32 44 C10 C11 C12 Q40 42 40 41 1 R70 R71 R72 E 38 Q90 43 R93 C5 E B 39 D C6 R64 B Q60 ZD4 48 49 51 RY3 E MICRO C20 B B E D28 Q30 E Q27 1 57 52 53 54 55 56 B B B 3 12 RY2 58 E B AC (H) Q3 B C9 OVEN LAMP 63 D32 F Q1 E C4 66 E 5 H/M HIGH B C1 C3 R1 ZD1 D3 D4 D1 D2 64 E R3
R-1855A PARTS LIST Note: The parts marked “∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. "§" MARK: PARTS DELIVERY SECTION. REF. NO. PART NO.
R-1855A REF. NO. CF1 D1-4 D20-32 D70-76 IC1 IC2 Q1 Q3 Q4 Q20-26 Q27 Q28-30 Q40 Q60 Q90 R1 R2 R3 R4 R7-8 R30 R31 R40 R50 R51 R62 R63 R64 R70-74 R75 R76-82 R90-93 R100 RY1-3 RY4-9 RY10 SP40 T1 VRS1 ZD1 ZD2 ZD3 ZD4 3- 2 3- 2-1 3- 2-2 3- 2-3 3- 2-4 3- 2-5 3- 2-6 3- 3 PART NO.
R-1855A REF. NO. 4-17 4-18 4-19 4-20 4-21 4-22 4-23 4-24 4-25 4-26 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 4-44 4-45 4-46 4-47 4-48 4-49 4-50 4-51 4-52 4-53 4-54 4-55 PART NO.
R-1855A REF. NO. 6- 9 6-10 6-11 6-12 6-13 6-13 6-14 6-15 PART NO.
R-1855A 2 1 4 3 6 5 OVEN AND CABINET PARTS A A 4-52 4-52 4-50 1-17 7-25 4-1 4-50 7-24 4-51 4-16 B B 7-7 7-24 2-10 4-39 4-46 7-11 4-36 4-25 7-7 C 7-24 7-24 4-37 1-21 7-3 4-45 C 4-24 7-11 4-40 7-17 2-5 1-13 4-38 7-5 2-6 7-7 1-7 4-44 4-8 7-11 7-7 4-22 7-20 D D 7-5 4-20 7-21 7-14 7-15 7-23 1-16 2-9 7-14 4-10 4-11 1-6 1-3 4-7 7-1 1-4 7-20 7-4 4-4 4-19 E 7-7 7-7 1-20 4-18 1-18 4-54 6-13 1-15 4-13 4-17 7-6 7-24 4-14 7-12 6-12 1-5 7-22 2-2 4-23 4-5
R-1855A 2 1 4 3 6 5 CONTROL PANEL PARTS A A 3-2 3-3 3-1 3-2-2 3-2-6 B DOOR PARTS 6-15 B 3-2-1 4-35 7-7 3-3 6-15 5-9 3-2-5 C 5-4 3-2-4 5-6 C 5-1 3-2-3 5-9 D D 5-5 5 5-7 5-8 E E 5-3 5-2 MISCELLANEOUS 6-1 6-8 F 6-1-1 F 6-6 6-1-4 6-1-5 6-1-2 G 6-1-3 6-1-6 6-1-7 G 6-10 6-9 6-11 H H 1 2 4 3 54 5 6
R-1855A PACKING AND ACCESSORIES 6-1 INSTALL MATERIAL ASSEMBLY 6-7 COOK BOOK 6-3 OPERATION MANUAL 6-5 WALL TEMPLATE TOP PAD DOOR PROTECTOR WRAP COVER 6-2 INSTALLATION INSTRUCTION 6-4 TOP TEMPLATE 2-1 GREASE FILTER (x 2) 6-10 LOW RACK 6-9 HIGH RACK BOTTOM PAD MILLER MAT 4-3 TURNTABLE TRAY TAPE 4-2 TURNTABLE SUPPORT ASSEMBLY PACKING CASE Non-replaceable items TRAY HOLDER 4-1 DAMPER ASSEMBLY DAMPER HOLDER 55
R-1855A NOTES: 56
R-1855A NOTES: 57
R-1855A COPYRIGHT © 1999 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. '99 SHARP CORP. (9M3.20E) Printed in U.S.
