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Содержание R-530BK

Страница 1: ...er Magnetron High Voltage Rectifier Assembly High Voltage Harness etc TABLE OF CONTENTS SECTION PAGE PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICE TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY Inside Front Cover Before Servicing Inside Front Cover Warning to Service Personnel 1 Foreword and Warning 2 Specifications 3 Generallnformation 4 KeyUnitLayout 5 Operation 6 Servicing and ...

Страница 2: ...shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to releasing the oven to the owner RD21101U Before servicing an operative unit perform a microwave emission check as per the Microwave Measurement Procedure ...

Страница 3: ...er visible signs of damage to the oven DANGER Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing Service personnel Do not contact the fol lowing parts while the appliance is energized High Voltage Capacitor Power Transformer Magne tron High Voltage Rectifier Assembly and High volt age Harness If provided Vent Hood Fan Assembly and Cool...

Страница 4: ...o the primary of the power transformer Ensure that the leads remain isolated from other components and oven chassis by using insulation tape After the above procedure reconnect the power sup ply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case cabinet 2 Open the door and block it open 3 Discharge the high voltage capacitor 4 Reconnect the leads to th...

Страница 5: ...ing Repetition Rate P HI HIGH Full power throughout the cooking time P 90 1 1 approx 90 of full power P 80 a approx 80 of full power P 70 MED HIGH approx 70 of full power P 60 approx 60 of full power P 50 MED approx 50 of full power P 40 approx 40 of full power P 30 MED LOW approx 30 of full power P 20 rn approx 20 of full power P IO approx 10 of full power P O No power throughout the cooking time...

Страница 6: ...eptacle Grounded Receptacle Box Tab for Grounding Screw Where a two pronged wall receptacle is encountered it is the personal responsibility and obligation of the cus tomer to contact a qualified electrician and have it re placed with a properly polarized and grounded three pronged wall receptacle or use a grounding adaptor If an extension cord must be used it should be a 3 wire 15 ampere minimum ...

Страница 7: ...rost pad Touch to defrost certain foods Number selection pads Power Level pad Touch to select micro wave power setting Clock pad Touch to set clock Beverage Center pad Touch to Reheat certain beverages Stop Clear pad Touch to erase during programming Touch once to stop operation of oven during cooking Touch twice to cancel cooking program m Kitchen Timer pad Touch to set minute function n Start To...

Страница 8: ...primary winding of the power transformer and is converted to approximate ly 3 4 volts AC on the filament winding and approxi mately 2400 volts AC on the high voltage winding The filament winding voltage heats the magnetron filament and the high voltage is sent to a voltage dou bler circuit The microwave energy produced by the magnetron is channeled through the waveguide into the cavity feed box an...

Страница 9: ...lates cooking time and variable power level Cooking Sequence 1 Touch REHEAT pad Note The oven should not be operated in either mode 2 3 immediately after plugging in the unit Wait five minutes before cooking in sensor mode The coil to the shut off relay RY 1 is energized the oven lamp turntable motor and cooling fan motor are turned on and the power transformer remains off After about 16 seconds t...

Страница 10: ...k Switches The secondary interlock switch is mounted in the lower position of the latch hook and the door sensing switch in the primary interlock system is mounted in the upper position of the latch hook They are activated by the latch heads on the door When the door is opened the switches interrupt the circuit to all components except the oven lamp A cook cycle cannot take place until the door is...

Страница 11: ...he testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge the high voltage capacitor 4 Reconnect the leads to the primary of the power transformer 5 Re install the outer case cabinet 6 Reconnect the power supply cord after the outer case is installed 7 Run the oven and check all functions Troubleshooting Guide Off Condition ...

Страница 12: ...r in oven load food Low voltage Dirty oven cavity Wrong operation Oven does not cook properly when Shorted or open wiring programmed for Cooking Power P 50 MED mode Operates properly on Cooking Power P HI Control unit HIGH mode Oven goes into COMPU DEFROST Magnetron but food is not defrosted well Wrong operation Low voltage Dirty oven check Compu Defrost The oven is in the sensor cooking Control U...

Страница 13: ...til the temperature stabilizes Record the temperature of the water Place the cup of water in the oven Operate oven on HIGH selecting 62 seconds cook time Allow the water to heat Remove the cup from the oven and again measure the temperature making sure to stir the ther mometer or thermocouple through the water until the maximum temperature is recorded Subtract the cold water temperature from the h...

Страница 14: ...ve is not the case check the capacitor with an ohmmeter to see if it is shorted between each terminal and case If it is shorted replace the capacitor 5 Reconnect all leads removed from components during testing 6 Re install the outercase cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions 3 E Secondary Interlock Switch Test I Disconnec...

Страница 15: ...gh voltage capacitor 4 Disconnect the oven from the power supply Before performing this test make sure that the secondary interlock switch and primary interlock relay are operating properly referring to the above Switch Test Procedure Disconnect the wire lead from the monitor switch NC terminal Check the monitor switch operation by using the ohmmeter as follows When the door is open the meter shou...

Страница 16: ...oven fuse indicates overheating of the oven cavity If a temperature fuse indicates an open circuit exchange that temperature fuse and check for a restricted air duct re stricted air flow to the magnetron and oven cavity through the vent holes of the oven cavity espe cially the air duct and cooling fan assembly 5 Reconnect all leads removed from components during testing 6 Re install the outercase ...

Страница 17: ... case is installed 8 Run the oven and check all functions 2 Control Unit The following symptoms indicate a defective control unit Before replacing the control unit perform the Key unit test Procedure K to determine if control unit is faulty 2 I 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 2 2 In c...

Страница 18: ...e is good control unit is defective 1Relay Symbol 1Operational Voltage 1Connected Components RY 1 1Approx 24 3 V DC 1Oven lamp Turntable motor Cooling fan motor 1 RY2 Approx 23 5 V DC Power transformer 8 Disconnect the power supply cord 9 Open the door and block it open IO Discharge the high voltage capacitor 11 Reconnect all leads removed from components during testing 12 Re install the outer cas...

Страница 19: ...ock it open 3 Discharge the high voltage capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insu lated tape 6 After the above procedure reconnect the power supply cord 7 Follow the troubleshooting guide given below for repair Steps Occurrence Cause or Correction 1 The rated AC voltage is n...

Страница 20: ...g switch is good disconnect the flat ribbon cable that connects the key unit to the control unit and make sure the door sensing switch is closed either close the door or short the door sensing switch connector Use the key unit matrix indicated on the control panel schematic and place a jumper wire between the pins that correspond to the STOP CLEAR pad making momentary contact If the control unit r...

Страница 21: ...nce and touch the Start pad Now the oven is in the sensor cooking operation and REHEAT SENSOR COOK will appear in the display 5 Now the oven will operate for the first 16 seconds without generating microwave energy Note ERROR will appear if the door is opened or Stop Clear pad is touched during first stage of sen sor cooking 6 After approximately 16 seconds microwave energy is produced the oven sh...

Страница 22: ...ay counts down If the above is not the case the control unit is probably defective If the above checks positive the AH sensor is probably defective 10 Disconnect the power supply cord and then remove outer case cabinet 11 Open the door and block it open 12 Discharge the high voltage capacitor 13 Disconnect the dummy resistor circuit from the sensor connector of control panel 14 Cart y out the nece...

Страница 23: ... 5 com mon electrodes using a liquid Crystal Display 7 Back Light Circuit Control Unit A circuit to drive the back light Light emmitting diodes LDI LDlO It incorporates a very small error because it works on commercial frequency The Control unit consists of the following 8 Power Source Circuit This circuit generates voltage necessary in the con trol unit from the AC line voltage In addition the sy...

Страница 24: ... clear terminal Signal is input to reset the LSI to the initial state when power is supplied Temporarily set to L level the moment power is supplied at this time the LSI is reset Thereafter set at H level I 13 1 MD0 1 IN Connected to GND I I 14 P20 OUT Key strobe signal Signal applied to touch key section A pulse signal is inputted to AN8 AN11 terminal while one of G8 line keys on key matrix is to...

Страница 25: ...3 SEG40 46 SEG 13 51 SEG13 13 SEG 36 74 SEG41 47 SEG 14 52 SEG14 14 SEG 37 75 SEG42 48 SEG15 53 SEG15 15 32 SEG 38 76 SEG43 49 SEG 16 54 SEGIG 16 SEG 39 77 SEG44 50 SEG 17 55 SEG17 17 SEG 40 78 SEG45 51 SEG 18 56 SEG18 18 30 VSS IN Power source voltage 5V VC voltage of power source voltage to drive the LSI is input to VSS terminal Connected to VC 31 32 VL3 VL2 IN Power source voltage input termina...

Страница 26: ... sec TK ii Signal synchronized with commercial power source frequency This is the basic timing for time processing of LSI H 5V 92 AVCC 93 AN0 94 AN1 IN IN IN L GND I 16 7 msec I I I A D converter power source voltage The power source voltage to drive the A D converter in the LSI Connected to GND Used for Initial balancing of the bridge circuit absolute humidity sensor This input is an analog input...

Страница 27: ...related ones in cluded of the touch control panel while keeping it connected to the oven 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 For those models therefore it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper in this case you m...

Страница 28: ...ission assembly 7 There is visible damage to the oven Do not operate the oven 1 Without the RF gasket Magnetron 2 If the wave guide or oven cavity are not intact 3 If the door is not closed 4 If the outer case cabinet is not fitted 3 prevent electric shock take the following pre autions Before wiring i Disconnect the power supply cord 2 Open the door and block it open 3 Discharge the high voltage ...

Страница 29: ... plate Secure transformer with four 4 screws to base plate Reconnect the wire leads primary and high volt age to transformer and filament leads of transformer to magnetron and high voltage capacitor Refer to Wiring Diagram Re install outercase cabinet and check that oven is operating properly High Voltage Rectifier and High Voltage Capacitor Removal When replacing the high voltage rectifier and hi...

Страница 30: ...r supply cord and remove outer case cabinet side of lamp socket 6 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 7 Remove the oven lamp from the oven lamp socket by turning the oven lamp Open the oven door and block it open Discharge high voltage capacitor Pull the wire leads from the oven lamp socket with th...

Страница 31: ...ecause the coil may be cut or in jured Do not disfigure the bracket by touching with the pliers b Remove the fan blade from the shaft of the fan rno tor by pulling and rotating the fan blade with your hand c Now the fan blade will be free Coil Groove joint pliers ide View I 1 Do not use this removed fan blade again because the hole for shaft may become bigger than a standard one INSTALLATION Insta...

Страница 32: ...atched position Check the upper position of the latch hook by push ing and pulling the upper portion of the door Then check lower portion of the latch hook by pushing and pulling the lower portion of the door toward the oven face Both results play of the door should be less than 0 5mm 2 The door sensing and secondary interlock switches interrupt the circuit before the door can be opened Monitor sw...

Страница 33: ...el on two 2 holes of upper and lower door hinge 6 Re install choke cover to door panel by snapping on to the door panel Note After any service to the door A Make sure that door sensing switch secondary Interlock switch primary Interlock relay and monitor switch are operating properly Refer to section Test Procedures B An approved microwave survey meter should be used to assure compliance with prop...

Страница 34: ...c onds later the detector circuit starts to function and the LSI observes the initial voltage available at its AN1 ter minal With this voltage given the switches SW1 to SW5 in the LSI are turned on in such a way as to change the resistance values in parallel with R107 RI11 of IC2 Changing the resistance values results in that there is the same potential at both the F 3 terminal of the abso lute hu...

Страница 35: ...n door and block it open Remove screws from the rear of the outercase cabi net Slide the entire case back about 1 inch 3cm to free it from retaining clips on the cavity faceplate Lift the entire outercase cabinet from the oven unit Discharge high voltage capacitor Remove two 2 screws holding the AH sensor Refer to Figures I 16 2 16 Disconnect the AH sensor harness from connector CN F on control un...

Страница 36: ...R 530BK R 530BW AH SENSOR ORIENTATION HARNESS ROUTING AH Sensor Orientation Mounting Screw AH densor AH Sensor Duct Figure 1 I 6 Oven Left Side View AH Sensor Harness Figure 2 16 Oven Top View 34 ...

Страница 37: ...on 21CFRI 030 1 O c 3 i as prescribed by the performance standard for microwave ovens must be used for testing 2 Place the oven tray in the oven cavity 3 Place the load of 275 Z I15ml 9 8 oz of tap water ini 4 5 tially at 20 5OC 68 F in the center of the oven cav ity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approximately 8 5 cm 3 in and made of an e...

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Страница 39: ...R 530BK R 530BW 0 I c s I I 25 A 00 I I I I I I I I I I I I I I I I I I I I I I I I B I I I I I I I I I I I I I I I I I I I I I I I I c I I I I I I I k 6 ...

Страница 40: ...OR w R4 27 c10 Q2 2SB1238 Dl D4 t b a l R6 3 3k em _ 1 I LED VA I Q3 KRC243M I MICRO r 4 Cl1 N C GND INT VR BUZZER TURNTABLE MOTOR OVEN LAMP FAN MOTOR MICRO N C DOOR SWITCH DOOR SWITCH NOTE v IF NOT SPECIFIED 1 4w 5 IF NOT SPECIFIED lSS270A Power Unit Circuit 1 2 3 4 5 6 D E F C t 38 ...

Страница 41: ...2 3 4 5 6 I 024 E 2Y a YSl P9tl iz YSlE9tl s cv 1 YSl z9tl T 3 ti a II I 1 I I I L I I I I YL P I Sltl AOS w0 at i r i El3 _ AOSlrll O113 I I I I 1 I z I f 9 7 I I I I rQ I 1 l I I 4 B C II E F c I 1 I 2 I 3 I 4 I 5 I 6 ...

Страница 42: ...4 B c D E F G 3 H 1 2 3 4 5 6 I Printed Wiring Board of Power Unit I I I 1 I 2 I 3 I 4 I 5 I 6 40 ...

Страница 43: ...former 1 BF 1 14 FACCDBOO3MREO M Power cord 1 1 15 QW QZBOlGMREO M H V wire A Transformer Capacitor 1 AC 1 16 FW VZB15OMREO M Main wire harness 1 AU 1 17 FW VZBl25MREO M Stop switch harness 1 AF l 18 FDTCTA177WRKO M AH sensor 1 AQ Oven 2 1 LBNDKBO07MRPO M H V Capacitor band 1 AB 2 2 LANGTBO35MRPO M Chassis support 1 AE 2 3 PHOK BO13MRFO M Latch hook 1 AG 2 4 GDAI B051MRPO M Base plate 1 AT 2 5 GLE...

Страница 44: ...J J Resistor 68Os292W 1 R3 VRD B12HF511J J Resistor 51O l W 1 AB R4 VRD B12EF27OJ J Resistor 27al qW 1 AA R5 VRD Bl2EF472J J Resistor 4 7kQ l w 1 R6 VRD B12EF332J J Resistor 3 3kQ I 1 AA RY1 2 RRLY BO02MREO M Relay DU24Dl lP M 2 AH SPl RALM AOl4DREO J Buzzer PKM22EPT 1 AG Tl RTRNPBOO9MREO M Transformer 1 VRSl RH VZAO32DREO J Varistor 104G47lK 1 AE ZDl VHEHZlGl 1 J Zener diode HZ16 1 1 AA 3 2 LHLD ...

Страница 45: ...4 TLAB B033MRRO 5 5 TINSEB180MRRO Miscellaneous M Monitor caution label M DHHS caution label M UL SCREW label M Menu label M Operation manual r 6 1 LX BZA041WREO 6 2 LX CZO052WREO 6 3 XHTSD4OP12RVO 6 4 LX BZ0081YBEO 6 5 XOTSD40P12000 6 6 6 7 6 8 6 9 6 10 6 11 6 11 6 12 XCPSD30P08000 XCBSD30P08000 XHTSD40P08000 LX CZA038WREO XHTSD4OPO8RVO XOTSF40P12000 M XOTSE40P12000 M LX CZBOllMREO M Fasteners Sc...

Страница 46: ...R 530BK R 530BW 1 2 3 4 5 6 Cavity Assembly b p 6 6 F 0 2 16 6 12 8 1 2 3 4 5 6 A B C D E F c I 44 ...

Страница 47: ...R 530BK R 530BW 3 5 I I I 1 L 1 2 Control Panel Assembly 3 4 5 6 Door Assembly r 1 2 3 4 5 6 J 4 3 2 D E F c k 45 ...

Страница 48: ...2 3 4 5 6 Wire Harnesses Actual harnesses may be different than illustrations Packing and Accessories TURNTABLE SUPPORT TRAY PACK PACKING CASE Non replaceable items 1 2 3 4 5 6 4 B c D E F G H 46 980 SHARP CORP 4M2 70E Printed in U S A ...

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