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Sharp R-210A - page 1
R-210A TABLE OF CONTENTS Page CAUTION, MICROWAVE RADIATION .............................................................................................................. 1 WARNING ............................................................................................................................................................ 1 PRODUCT SPE ...
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Sharp R-210A - page 2
R-210A ...
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Sharp R-210A - page 3
R-210A 1 SER VICE MANU AL SHARP CORPORATION OSAKA, JAPAN MICROWAVE OVEN R-210A GENERAL IMPORTANT INFORMATION This Manual has been prepared to provide Sharp Corp. Service engineers with Operation and Service Information. It is recommended that service engineers carefully study the entire text of this manual, so they will be qualified to render satis ...
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Sharp R-210A - page 4
R-210A 2 PRODUCT DESCRIPTION SPECIFICATION ITEM DESCRIPTION Power Requirements 110 Volts 60 Hertz Single phase, 2 wire Power Consumption 1.1 KW Power Output 700 watts nominal of RF microwave energy (IEC-705) 600 watts nominal of RF microwave energy (2 litre water load ) Operating frequency 2450 MHz Case Dimensions Width 450 mm Height 295 mm includi ...
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Sharp R-210A - page 5
R-210A 3 APPEARANCE VIEW 1. Ventilation openings 2. Oven lamp 3. Door hinges 4. Door safety latches 5. See through door 6. Door seals sealing surfaces 7. Coupling 8. Door open button 9. Control panel 10. Waveguide cover 11. Power supply cord 12. Rating label 13. Turntable 14. Roller stay 15. Earth wire OVEN MED LOW MED HIGH LOW TIMER COOKING CONTRO ...
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Sharp R-210A - page 6
R-210A 4 OPERA TION SEQUENCE 7-1. When the oven door is opened during or after the cycle of a cooking program, the 1st latch switch and 2nd latch switch must open their (COM-NO) contacts first. After that the contacts (COM-NC) of the monitor switch can be closed. 7-2. When the oven door is closed. The contacts (COM- NC) of the monitor switch must b ...
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Sharp R-210A - page 7
R-210A 5 FUNCTION OF IMPORT ANT COMPONENTS DOOR OPEN MECHANISM The door can be opened by pushing the open button on the control panel. When the open button is pushed, the switch lever on the latch hook is moved upward, operating the latch head. The latch head is moved upward, and released from the latch hook. Now, the door can be opened. LATCH HOOK ...
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Sharp R-210A - page 8
R-210A 6 Note: The ON/OFF time ratio does not exactly corre- spond to the percentage of microwave power, because approx. 2 seconds are needed for heat- ing up the magnetron filament. SER VICING WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with following parts will result ...
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Sharp R-210A - page 9
R-210A 7 MAGNETRON POWER TRANSFORMER H.V. RECTIFIER ASSEMBLY HIGH VOLTAGE CAPACITOR 1ST. LATCH SWITCH 2ND. LATCH SWITCH MONITOR SWITCH TEMPERATURE FUSE 120˚C (OVEN) THERMAL CUT-OUT 95˚C (MG) TIMER MOTOR TIMER CONTACT TIMER VARI. SWITCH FAN MOTOR TURNTABLE MOTOR FUSE 13A POWER SUPPLY CORD SHORTED WIRE HARNESS OPENED WIRE HARNESS OVEN LAMP OR SOCKE ...
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Sharp R-210A - page 10
R-210A 8 CARRY OUT 3D CHECKS. Isolate the magnetron from the high voltage circuit by removing all leads connected to the filament terminal. To test for an open circuit filament use an ohmmeter to make a continuity test between the magnetron filament terminals, the meter should show a reading of less than 1 ohm. To test for a short circuit filament ...
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Sharp R-210A - page 11
R-210A 9 1000g 1000g 1000g T1˚C T2˚C Heat up for 62 sec. Initial temperature .................................................................................................. T1 = 11 ° C Temperature after (60 + 2) = 62 sec. ..................................................................... T2 = 21 ° C Temperature difference Cold-Warm ...... ...
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Sharp R-210A - page 12
R-210A 10 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST CAUTION: 1˚C CORRESPONDS TO 60 WATTS. REPEAT MEASUREMENT IF THE POWER IS INSUFFICIENT. 1 l 1 l (T1 C) (T2 C) 1 l 1 l (T1 C) (T2 C) CARRY OUT 3D CHECKS. A. Isolate the high voltage capacitor from the circuit. B. Continuity check must be carried out with measuring instrument which is set to t ...
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Sharp R-210A - page 13
R-210A 11 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST CARRY OUT 3D CHECKS. If the fuse 13A is blown when the door is opened, check the 1st latch switch, 2nd latch switch, monitor switch and monitor resistor. E SWITCH TEST Isolate the switch to be tested and using an ohmmeter check between the terminals as described in the following table. CARRY ...
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Sharp R-210A - page 14
R-210A 12 TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST If the fuse 13A is blown by incorrect door switching replace the defective switch(es) and the fuse 13A. If the fuse 13A is blown, there is a shorts or grounds in electrical parts or wire harness. Check them and replace the defective parts or repair the wire harness. CARRY OUT 4R CHECKS. CAUT ...
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Sharp R-210A - page 15
R-210A 13 COMPONENT REPLA CEMENT AND ADJUSTMENT PROCEDURE WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven. 1. Disconnect oven from power supply. 2. Make sure that a definite” click” can be heard when the microwave oven door is unlatched. (Hold the door in a closed position wit ...
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Sharp R-210A - page 16
R-210A 14 HIGH VOLTAGE COMPONENTS REMOVAL (HIGH VOLTAGE CAPACITOR, HIGH VOLTAGE RECTIFIER ASSEMBLY AND H.V. FUSE) To remove the components, proceed as follows. 1. CARRY OUT 3D CHECKS. 2. Disconnect the H.V. fuse from the power transformer. 3. Disconnect the H.V. wire of the H.V. rectifier assembly from the magnetron. 4. Disconnect the wire leads fr ...
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Sharp R-210A - page 17
R-210A 15 POWER SUPPLY CORD REPLACEMENT Removal 1. CARRY OUT 3D CHECKS. 2. Disconnect the wire leads from the power supply cord. 3. Remove the one (1) screw holding the power supply cord to the oven cavity back plate. 4. Remove the power supply cord from the oven cavity back plate. Re-install 1. Insert the power supply cord into the oven cavity bac ...
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Sharp R-210A - page 18
R-210A 16 CAUTION: • Do not re-use the removed fan blade be- cause the hole (for shaft) may be lager than normal. 9. Remove the two (2) screws holding the fan motor to the fan duct. 10. Now, the fan motor is free. INSTALLATION 1. Install the fan motor to the fan duct with the two (2) screws. 2. Install the fan blade to the fan motor shaft accordi ...
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Sharp R-210A - page 19
R-210A 17 flange of the oven front face. 2. With the door closed, adjust latch hook by moving it back and forth and up and down. In and out play of the door allowed by the upper and lower position of the latch hook should be less than 0.5mm. The horizontal position of the latch hook should be adjusted so that the monitor switch is activated with th ...
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Sharp R-210A - page 20
R-210A 18 ture, light or sensing of gentle warm air movement around oven door is not abnormal and do not of themselves indicate a leakage of microwave en- ergy from oven cavity. UPPER OVEN HINGE PIN DOOR PANEL CHOKE COVER PIN LOWER OVEN HINGE Figure C-8. Door Replacement SEALER FILM Installation 1. Put the adhesive tape on the backi ...
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Sharp R-210A - page 21
R-210A 19 MICR O W A VE MEASUREMENT After adjustment of door latch switches, monitor switch and door are completed individually or collectively, the following leakage test must be performed with a survey instrument and it must be confirmed that the result meets the requirements of the performance standard for micro- wave oven. REQUIREMENT The safet ...
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Sharp R-210A - page 22
R-210A 20 NOTE: " " indicates components with potential above 250V. SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. TIMER KNOB AT "0" POSITION. SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. VARIABLE COOKING CONTROL "HIGH" 3. TIMER ON Figure O-1 Oven Schematic-OFF Condition Figure O-2 Oven Schematic-ON Condi ...
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Sharp R-210A - page 23
R-210A 21 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-1. Pictorial Diagram WHT RED GRY W H T G R Y R E D BLK RED ORG BLU GRY RED TEMP. FUSE 120˚C (OVEN) 1ST LATCH SWITCH MONITOR SWITCH 2ND LATCH SWITCH TURNTABLE MOTOR N.O. COM. N.C. COM. COM. THERMALCUT-OUT 95˚C (MG) NO COM. TIMER MOTOR + ORG BLK RED 6521 4 3 WHT ...
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Sharp R-210A - page 24
R-210A 22 P ARTS LIST Note: The parts marked " ∆ " may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE * * ∆ * * * ∆ ∆ ∆ ∆ ∆ ELECTRIC PARTS 1- 1 QSWTEA126WRE0 Timer motor 30min. 1 BD 1- 2 QSW-MA110WRE0 1st. latch switch & 2nd. ...
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Sharp R-210A - page 25
R-210A 23 Note: The parts marked " ∆ " may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE 6-10 TLABPA032WRR0 Grounding label 1 AG SCREWS,NUTS AND WASHERS 7- 1 XEPSD30P08XS0 Screw : 3 mm x 8mm 1 AA 7- 2 XFPSD40P08K00 Screw : 4mm x 8mm 8 AA 7- ...
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Sharp R-210A - page 26
R-210A 24 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 7-8 4-19 1-5 1-10 4-13 4-3 4-2 4-15 1-13 7-2 1-9 7-9 2-1 6-6 6-5 4-12 7-7 7-7 7-7 7-7 7-9 4-5 4-20 4-14 1-4 7-8 7-2 4-6 7-5 1-7 1-6 7-2 1-15-1 1-8 6-8 7-12 7-7 4-9 7-8 4-17 7-10 4-1 1-2 1-2 1-3 4-10 1-12 7-3 4-8 7-7 2-3 2-3 7-7 7-7 7-7 2-2 7-2 1-11 4-16 7-4 4-11 ...
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Sharp R-210A - page 27
R-210A 25 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 MISCELLANEOUS CONTROL PANEL PARTS 5-3 5-2 3-2 3-4 3-3 7-1 3-5 3-1 1-1 5-4 5-5 6-4 5-7 5-7 5-6 5-8 5-1 5-7 Actual wire harness may be different than illustration. 6-9 ...
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Sharp R-210A - page 28
R-210A 26 '97SHARP CORP. (11K0.100E) Printed in Japan ...
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