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R306LW

11 – 7

Figure C-6. Door Replacement

4. SEALER FILM

1. Put the adhesive tape on the backing film of the sealer film as

shown in Fig. C-7

2. Tear the backing film by pulling the adhesive tape.

3. Put the pasted side of the sealer film on the door panel

Figure C-7. Sealer film

Pin

Pin

Upper
Oven Hinge

Upper Oven
Hinge

Lower Oven

Hinge

Lower
Oven Hinge

Slit choke of
door panel

Choke Cover

Sealer film

Backing film

Adhesive tape

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Содержание R-306LK

Страница 1: ... CHAPTER 12 CIRCUIT DIAGRAMS Parts List SERVICE MANUAL R306LW CONTENTS SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to change without notice S2603R306KPW MICROWAVE OVEN R 306LK R 306LW MODELS In the interest of user safety the oven should be restored to its origi nal condition and only parts identical to those specified should ...

Страница 2: ...3 10 Procedure I NOISE FILTER TEST 8 4 11 Procedure J TOUCH CONTROL PANEL ASSEMBLY TEST 8 4 12 Procedure K KEY UNIT TEST 8 5 13 Procedure L RELAY TEST 8 6 14 Procedure M DEFROST TEST 8 6 15 Procedure N FOIL PATTERN ON THE PRINTED WIRING BOARD TEST 8 6 CHAPTER 9 TOUCH CONTROL PANEL ASSEM BLY 1 OUTLINE OF TOUCH CONTROL PANEL 9 1 2 DESCRIPTION OF LSI 9 1 3 SERVICING FOR TOUCH CONTROL PANEL 9 3 CHAPTE...

Страница 3: ...components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner BEFORE SERVICING Before servicing a...

Страница 4: ...h voltage capacitor 4 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 insulation tape 6 After that procedure reconnect the power supply cord 2 When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage cap...

Страница 5: ...he oven cavity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically non conductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cooking ...

Страница 6: ...rackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is not any other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel 3 DANGER Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing Service personnel Do not contact th...

Страница 7: ... for holding food is less Control Complement Touch Control System Clock 1 00 12 59 Timer 0 99 minutes 99 seconds Microwave Power for Variable Cooking Repetition Rate P HI Full power throughout the cooking time P 90 approx 90 of FULL Power P 80 approx 80 of FULL Power P 70 approx 70 of FULL Power P 60 approx 60 of FULL Power P 50 approx 50 of FULL Power P 40 approx 30 of FULL Power P 30 approx 40 o...

Страница 8: ...have it replaced with a properly grounded three pronged wall receptacle or have a grounding adapter properly grounded and polarized If the extension cord must be used it should be a 3 wire 15 amp or higher rated cord Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally CAUTION DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE ROUND GROUNDING PRO...

Страница 9: ...NEL NOTE Some one touch cooking features such as MINUTE PLUS are disabled after three minutes when the oven is not in use These fea tures are automatically enabled when the door is opened and closed or the STOP CLEAR pad is pressed ...

Страница 10: ...time still remaining in the cook cycle when the door was opened 7 The monitor switch electrically monitors the operation of the sec ondary interlock switch and primary interlock relay and is mechani cally associated with the door so that it will function in the following sequence a When the door opens from the closed position the primary interlock relay RY2 and secondary interlock switch open thei...

Страница 11: ...OVEN TEMPERATURE FUSE 150ºC MAGNETRON THERMAL CUT OUT 145ºC OVEN 120V AC 60 Hz GRN FUSE 20A NOISE SUPPRESSION COIL LINE CROSS CAPACITOR 0 22μF AC 250V LINE BYPASS CAPACITOR 0 0033μF AC125V LINE BYPASS CAPACITOR 0 0033μF AC 125V L N NOISE FILTER or NOTE indicates components with potentials above 250V POWER TRANSFORMER RECTIFIER MAGNETRON CAPACITOR 0 91μF AC2100V OVEN LAMP TURN TABLE MOTOR FAN MOTOR...

Страница 12: ...rntable motor rotates the turntable located on the bottom of the oven cavity so that the food on the turntable is cooked evenly The turntable may turn in either direction 5 COOLING FAN MOTOR The cooling fan motor drives a blade which draws external cool air This cool air is directed through the air vents surrounding the magne tron and cools the magnetron This air is channelled through the oven cav...

Страница 13: ...alled 7 Run the oven and check all functions 1 TROUBLESHOOTING CHART Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected RE CK A B C D E F F G H RE RE CK J CK CK CK K L N I POSSIBLE CASE AND DEFECTIVE PARTS SHORT IN POWER CORD SHORT OR OPENED WIRING MAGNETRON POWER TRANSFORMER H V RECTIFIER ASSEMBLY HIGH VOLTAGE CAPACITOR TEMPERATURE FUSE o...

Страница 14: ... to stir the thermometer or thermocouple through the water until the maximum temperature is recorded 4 Subtract the cold water temperature from the hot water temperature The normal result should be 32 1 to 59 7 F 17 9 to 33 2 C rise in tempera ture If the water temperatures are accurately measured and tested for the required time period the test results will indicate if the magnetron tube has low ...

Страница 15: ...perature fuse Oven or thermal cut out Oven indicates overheating of the oven exchange the temperature fuse or thermal cut out and check inside of oven cavity and for improper setting of cooking time or operation of control unit Check for restricted air flow through the vent holes of the oven cavity especially the cooling fan and air guide 6 Reconnect all leads removed from components during testin...

Страница 16: ...igh voltage capacitor 4 Before performing this test make sure that the secondary interlock switch and the primary interlock relay are operating properly according to the above Switch Test Procedure Disconnect the wire lead from the monitor switch COM terminal Check the monitor switch operation by using the ohmmeter as follows When the door is open the meter should indicate a closed circuit When th...

Страница 17: ...h control panel assembly is divided into two units Control Unit and Key Unit and troubleshooting by unit replacement is described according to the symptoms indicated Before testing 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...

Страница 18: ...ck it open 3 Discharge high voltage capacitor 4 Reconnect all leads removed from components during testing 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 12 Procedure K KEY UNIT TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage ...

Страница 19: ...wer supply cord after the outer case is installed 15 Run the oven and check all functions 14 Procedure M DEFROST TEST WARNING The oven should be fully assembled before following procedure 1 Place one cup of water in the center of the turntable tray in the oven cavity 2 Close the door touch the DEFROST pad once And then touch the number pad 2 3 Touch the number pad 5 and then touch the start pad 4 ...

Страница 20: ...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 Follow the troubleshooting guide given below for repair 8 Disconnect the power supply cord and then remove outer case 9 Open the door and block it open 10 Discharge high voltage capacitor 11 Reconnec...

Страница 21: ...ercial frequency 7 Door Sensing Switch A switch to tell the LSI if the door is open or closed 2 DESCRIPTION OF LSI The I O signal of the LSI are detailed in the following table Symbol Voltage Application VSS 5V LSI IC1 Pin No Signal I O Description 1 P50 IN Signal coming from touch key When either G7 line on key matrix is touched a corresponding signal out of P24 P26 and P31 P33 will be input into...

Страница 22: ...rce voltage The power source voltage to drive the A D converter in the LSI 52 P11 IN To input signal which communicates the door open close information to LSI Door close H level signal 0V Door open L level signal 5V 53 P10 OUT Terminal not used 54 P33 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P50 P51 P52 and P53 terminal while one of G1 line keys on key m...

Страница 23: ...all the controls sensor related ones included of the touch control panel while keeping it connected to the oven b On some models the power supply cord between the touch control panel and the oven proper is so 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 ov...

Страница 24: ...s adjusted accordingly 3 Soldering As the melting point of lead free solder Sn Ag Cu is higher and has poorer wettability flow to prevent damage to the land of the PWB extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time Remove the bit as soon as a good flow is achieved The high content of tin in lead free solder will cause premature corrosion of...

Страница 25: ...t close firmly 2 Door hinge support or latch hook is damaged 3 The door gasket or seal is damaged 4 The door is bent or warped 5 There are defective parts in the door interlock system 6 There are defective parts in the microwave generating and transmission 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...

Страница 26: ... capacitor Refer to PICTORIAL DIAGRAM 4 Reinstall outer case and check that oven is operating properly 4 HIGH VOLTAGE COMPONENTS REMOVAL HIGH VOLTAGE CAPACITOR AND HIGH VOLT AGE RECTIFIER ASSEMBLY To remove the components proceed as follows 1 Disconnect the power supply cord and remove outer case 2 Open the oven door and block it open 3 Discharge high voltage capacitor 4 Disconnect the high voltag...

Страница 27: ...he control unit to the control panel frame And remove the control unit 6 Remove the rubber connector from the long slit on the control panel frame 7 Tear away the graphic sheet from the control panel frame 8 Tear away the membrane switch from the control panel frame 2 REINSTALL 1 Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol 2 Tear the backing pa...

Страница 28: ... because the coil may be cut or injured Do not disfigure the bracket by touching with the pli ers 8 Remove the fan blade assembly from the shaft of the fan motor by pulling and rotating the fan blade with your hand 9 Now the fan blade will be free CAUTION Do not re use the removed fan blade because the hole for shaft may be larger than normal 10 Now the fan motor is free 2 INSTALLATION 1 Install t...

Страница 29: ...in its place The secondary interlock monitor switches are in the lower position and the door sensing switch is in the upper position 2 Reconnect wire leads to each switch Refer to pictorial diagram 3 Secure latch hook with two 2 mounting screws to oven flange 4 Make sure that the monitor switch is operating properly and check continuity of the monitor circuit Refer to chapter Test Procedure and Ad...

Страница 30: ...and latch spring are free 16 Remove door screen from door frame 17 Now door screen is free 2 REINSTALL 1 Re install door screen to door frame 2 Reinstall the latch spring to the latch head Reinstall the latch spring to the door frame Reinstall latch head to door frame 3 Reinstall door panel to door frame by fitting ten 10 tabs of door frame to ten 10 holes of door panel 4 Hold the door panel to th...

Страница 31: ... film as shown in Fig C 7 2 Tear the backing film by pulling the adhesive tape 3 Put the pasted side of the sealer film on the door panel Figure C 7 Sealer film Pin Pin Upper Oven Hinge Upper Oven Hinge Lower Oven Hinge Lower Oven Hinge Slit choke of door panel Choke Cover Sealer film Backing film Adhesive tape ...

Страница 32: ...NTROL PANEL WHT RY1 PRIMARY INTERLOCK RELAY CN B 2 1 CN A T1 3 1 RY2 RED PNK RED CN A 2 GRY 1 3 CN B 2 1 GRN GRY COM N O BLK GRY WHT HIGH VOLTAGE CAPACITOR H V RECTIFIER RED WHT RED HIGH VOLTAGE COMPONENTS MAGNETRON TURNTABLE MOTOR POWER TRANSFORMER RED RED GRY GRY RED WHT PNK GRY FUSE FAN MOTOR WHT BLK PNK OVEN LAMP PNK GRY GRN GRY L N WHT RED Power Supply Cord Oven Cavity Back Plate Screw Noise ...

Страница 33: ... D1 D2 D3 D4 D1 D4 1N4002L X 4 NOTE SEG1 SEG3 SEG2 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 COM2 COM1 COM0 B1 DOOR 5V INT BZ COM M C40 GND R4 910 1 2W CN B AC AC AC120V 60HZ G4 G5 G6 G1 LSI UNIT J1 DTA123JS G8 G9 G10 G2 G3 G7 VR R30 3 3K 0 01uF 50V KEY UNIT PA142DR COM1 COM2 COM3 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 P71 P72 AVDD P01 P00 RESET X2 X1 VSS VDD XT2 XT1 IC P53 P52 P51 P50 P02 17 R50 R51...

Страница 34: ...R306LW 12 3 3 Printed Wiring Board Figure S 3 Figure S 3 Printed Wiring Board ...

Страница 35: ...s marked may cause undue microwave exposure Parts marked are used in voltage more than 250V 1 OVEN PARTS 2 DOOR AND CONTROL PANEL PARTS INDEX DOOR PROTECTION SHEET SPADPA204WRE0 TOP PAD ASSEMBLY FPADBA616WRKZ PLASTIC BAG SSAKHA034WRE0 Not replaceable items PACKING CASE FPAK A560WRKZ R 306LK FPAK A559WRKZ R 306LW BOTTOM PAD ASSEMBLY FPADBA617WRKZ CABINET COVER for R 306LK SPAKHA011WRE0 FOAM SHEET S...

Страница 36: ... 4 12 2 1 7 1 1 13 1 2 1 7 7 3 1 10 1 9 4 10 7 10 7 10 7 8 4 11 7 5 4 17 7 4 7 10 1 5 1 4 4 2 1 1 1 1 1 11 7 7 7 10 7 3 7 7 6 4 7 11 7 9 7 2 7 2 7 10 7 10 7 10 7 6 1 12 7 8 4 8 1 8 7 10 7 8 1 2 2 3 2 2 4 12 4 6 4 14 7 1 1 3 4 16 4 15 1 6 7 1 6 1 6 2 4 7 2 3 2 3 4 12 2 3 ...

Страница 37: ...11 RV MZA340WRZZ BH Magnetron 1 11 RV MZA288WRE0 BK Magnetron Interchangeable 1 11 RV MZA321WRZZ BH Magnetron Interchangeable 1 12 QFS TA014WRE0 AG Temperature fuse 150deg C Magnetron 1 13 FPWBFA385WRKZ AV Noise filter assembly CABINET PARTS 2 1 GCABUA889WRPZ BF Outer case cabinet R 306LK 2 1 GCABUA883WRPZ BF Outer case cabinet R 306LW 2 2 GDAI A360WRWZ AS Bottom plate 2 3 GLEGPA074WRE0 AC Foot OV...

Страница 38: ...R306LW 4 2 DOOR AND CONTROL PANEL PARTS 3 2 6 6 3 3 3 6 3 2 1 3 2 2 3 4 3 5 3 1 3 7 6 5 5 1 5 3 5 2 5 4 5 5 5 8 5 7 5 6 5 8 ...

Страница 39: ...pen button R 306LW 3 4 MSPRCA050WRE0 AB Button spring 3 5 QCNC A014WRZZ AE Rubber connector 3 6 RLCDSA105DRZZ AQ Liquid crystal display 3 7 XEPS730P08XS0 AB Screw 3mm x 8mm DOOR PARTS 5 1 FDORFA364WRTZ AS Door panel 5 2 PSHEPA382WRE0 AH Sealer film 5 3 GWAKPB027WRRZ AX Door frame R 306LK 5 3 GWAKPB025WRRZ AX Door frame R 306LW 5 4 HPNL A863WRRZ AS Door screen R 306LK 5 4 HPNL A861WRRZ AS Door scre...

Страница 40: ...8WRP0 1 4 12 AB PDUC A833WRPZ 1 4 8 AM PDUC A853WRWZ 1 4 9 AP PHOK A145WRFZ 1 4 1 AL PPACGA176WREZ 1 4 10 AC PSHEPA382WRE0 2 5 2 AH PSHEPB173WREZ 2 3 2 1 AU PSHEPB174WREZ 2 3 2 1 AU Q QCNC A014WRZZ 2 3 5 AE QFS TA014WRE0 1 1 7 AG 1 1 12 AG QSW KA062DRZZ 2 3 2 2 AQ QSW MA147WRZZ 1 1 1 AG R RC QZA218WRE0 1 1 5 AW RC QZA295WRZZ 1 1 5 AV RLCDSA105DRZZ 2 3 6 AQ RLMPTA082WRZZ 1 1 8 AL RLMPTA085WRZZ 1 1 ...

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