SERVICE MANUAL Microwave Oven EMO-SRT1(NX) EMO
Contents
1. H REMOVING DOOR 1 Remove the cabinet frame 2 Remove 2 screws securing the P C B for Power with bracket to the cavity Figure 11 Then take out it 8 Remove the both of spring hanging to the arm Note When reinstalling the spring be carefull of direction of the tip of spring 4 To remove the arms push the on its under the door closing 5 Remove the 2 screws securing roller assembly to detatch the both of hinge NOTES After replacing the door be sure to check that the interlock switch the door sensing switch and the interlock monitor swich operate normally See pages 1 and 7 After replacing the door check for microwave ene rgy leakage with a leakage detector Microwave energy leakage must be below the limit of 5mW cm 12 I RELEASING TYPE CONNECTOR This oven is provided with locked type connectors When you remove a connector pull the connector while releasing the lock by pressing A point shown below Do not pull the wire of the connector Connector 51 S2 5102 S104 Figure 13 lt gt Figure 13 Figure 14 Pull connector case Never pull the wire Figure 15 J DETECTOR INFRALED SENSOR 1 When microwave operation is overheating check for surface of filter on infrared sensor and mounting place of infrared sensor to the cavity If the clouding the surface of filter on infrared sensor clean up the surface of filter using soft cloth and secure the 2 screws in2. Food does not heat Press STOP CLEAR cool down the oven by keeping the door open for a while and operate again The turntable does not rotate Check if the turntable is set correctly Heating soon stops or its rotation is uneven Check the food container for contact with the wall Arcing or abnormal 9 Check for use of a metal container container having gold or silver decoration sounds occur C metal skewers baking tray or cooking rack when heating with micro heating Check for contact by metallic substrates aluminum foil etc with the wall m Check inside the oven and turntable for contamination by food waste and oil Smoke or odor occurs is it the first empty baking of the oven Check as instructed below when U50 or U21 appears in the display U50 flashes in the e Was the key pressed within 1 minute after placing the food inside the oven display and closing the door for REHEAT and automatic operation keys Was the key pressed within 1 minute after connecting the plug to an outlet r gt placing the food inside the oven and closing the door 5 Hu gt Open and then close the door again and press the key within 1 minute This function prevents empty heating without any food The buzzer sounds five Check for high temperature inside the oven when the temperature is set to times and U21 20 C or less at SET TEMP or pressing AUTO D
3. 0 0 5 bi M vO 10v ov R122 47K R206 JANI R121 33K sv 21 1013 7 1 2 S104 324 1 4 P54 Er Esa P51 C103 d 100 Z25v e 4 poe 3800 172W PA R306 LED312 PDA Pos 990917106 3800 1 2W 12 R303 LED Matrix 3600 1 2w pu R302 LM8845 3809 1 2W LED311 C3917x3 Pag 245 11 Pag PG O O G Q G dul PSS CNTRI pn Key Matrix P22 00 MORE P23 LESS ee PIO E ce Piz ons pn 5 P70 hid iB Pia 3 ue Id RUSO mn E EM pao uk bim mr 2 5 ord AUS gli 8 EY 98 v CONTROL CIRCUIT BOARD Ground Figure 17 1 D N N 0 PD Ul N 3 LCDt o 18 1 e RHS UCHI k ped i 52 8123 LL Cus 8120 lt CUNT RR e man i3 N 25 los fus3 0201 fuss 2 mise e R z RISA Ct51 9 Die i amp 198 o9 J u e Nd a E 9 AL n E a ol JH2 8 Ny 2 NEL AM q 8 5 te AEN E me z QU 8 507 51 06 E sh gt 3 Ham 8 i 6 00 my a A 0120 ce jn mE f FJ m S
4. 3 To remove the Control Assembly remove the all connector and lead wires from the Control circuit board 4 Remove 3 screws securing the Control Assebmbly to the cavity 5 Remove the FPC connector from the connector 5101 while pushing up the end of the plastic fastner b Remove 6 screws securing the control circuit board 11 6 Lift up the control circuit board from its left side and take out from the control base PCB for Power 3x8 Bracket Figure 11 F REMOVING TOUCH KEY BOARD 1 Remove the FPC connector from the connector 101 while pushing up the end of the plastic fastner 2 Remove the control plate which is held on the control base with the adhesive tape from the front of control base G REMOVING MAGNETRONS See Figure 12 1 Remove the Cabinet 2 Remove all lead wires from magnetron and thermal limiter on duct 3 Remove 2 screws securing the stay plate 4 Remove 4 screw securing magnetrons to the waveguide 5 Remove magneron fromthe wave guide VERY CAREFULLY NOTES When removing the magnetron make sure that its dome does not hit any adjacent parts or it may be damaged When replacing the magnetron be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition After replacing the magnetron check the microwave energy leakage to ensure it is below the limit of 5mW cm Duct for Magnetron Figure 12
5. TEST PROCEDURES ANDTROUBLESHOOTING SEE FIGURE 3 DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVING THE CABINET FROMTHE UNIT PROCEED WITH TESTS ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITORS AND REMOVING THE LEAD WIRES ON THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORM ERS FOR LOWER AND UPPER MAGNETRONS A TEST PROCEDURES CAUTION PRIMARY WINDINGS Filament Windings on Rx1 scale Figure 4 2 Check for resistance Between each filament terminal of the magnetron and the chassis ground with an ohm meter on highest scale Figure 5 Figure 3 COMPONENT CHECKOUT PROCEDURE RESULT 1 Check for resistance Across the filament ter Normal reading MAGNETRON minal of the magnetron with an ohm meter Less than 1 ohm Normal reading Infinite ohms HIGH VOLTAGE TRANSFORMER 1 Measure the resistance With an ohm meter on x1 scale a Primary winding b Filament winding c Secondary winding 2 Measure the resistance with an ohm meter on highest scale a Primary winding to ground b Filament winding to ground Normal reading Approximately 2 0 ohms Less than 1 ohm Approximately 137 ohms Normal reading Infinite ohms Infinite ohms Note Remove varnish of measured point COMPONENT CHECKOUT PROCEDURE RESULT HIGH VOLTAGE CAPACITOR Including internal bleeder resistor Measure the resistance Across two t
6. BEFORE CALLING FOR SERVICE Make following simple checks before contacting SANYO Service Center Never remove or interfere with any parts or screws THIS COULD PROVE VERY DANGEROUS Problem Checking items Nothing is indicated in Power will not be supplied merely by connecting the plug to an outlet with the display after the door closed connecting the plug to Open the door for 1 second or more an outlet Power will be turned on and 0 will appear in the display Open the door for 1 second or more place the food inside the oven and operate This occurs because power is automatically turned off to save energy upon lapse of 5 minutes after operation Refer to Auto Power Off Function on page a Check whether there is a power failure or whether the main circuit breaker has been opened No operations at all Open the door for 1 second or more after recovery from the power failure or closing the main circuit breaker Check for a disconnected power plug Connect the power plug to an outlet and open the door for 1 second or more Unless the door is opened once the power will not be supplied Check if the door is closed firmly Check whether the food is covered by a metal container or aluminum foil during heating with micro heating Check for D in the display Refer to page 45 Check for too high temperature inside the oven when heating with micro heating
7. EF or setting to fermentation appears in 115 1 C Press STOP CLEAR open the door for a while to cool down the oven and the display i m yg repeat the operation When the buzzer sounds five times and one of the following error messages appears E1 E3 or E22 Check the indicated error code disconnect the power plug from the outlet and inform your dealer of the error code Indication on display not malfunctions HOT is indicated in the display This appears when the temperature of the turntable or the inside of the oven is too high Automatic heating and manual heating can be operated even during the HOT indication Until the temperature lowers the cooling fan HOT continuously revolves up to 30 minutes The HOT indication remains after removing the turntable or baking tray HOT is not indicated although the turntable is hot MENT is indicated and the fan revolves This is indicated until the temperature inside the oven lowers immediately after oven or grill heating or microwave heating is repeated at short intervals Always be careful when removing the turntable e The HOT message will not be indicated when using microwave heating The fan revolves to ventilate the oven after microwave heating The fan continues to revolve after opening the door The indication disappears 1 minute later however the fan will continuously revolve for up to 30 minutes
8. GLOVE 22 9 OVERALL CIRCUIT DIAGRAM 14 ver 220 240 S102 2 3 22 ves son Door Sensing ved ADS 7 001 RIO 10K 9 PIS 512 XA SBN Poo cios 901 O in 5600 2 V z BZ1 2KHz Leman 256 P27 RLI BM 1 P50 125 TK 010 E R127 10K R125 E AN2 55 OPEN Pot su 5 s 2 512 up 9905 m XA SBN 10K 5V VK osos 35 22 FMA9A P OPEN i 9912 2 2 1 D117 2 2 FMABA m 1 2 XIN xour P55 CNTRI SEGIS SEGIA SEGI3 SEGI2 SEGI SEGIO stas seca sta 3 06 stas SEGA SEG3 SEG2 SEGI SEGO comi como coma 2 vu Rig 1013 10k 324 3 4 VRI 2 2K C25 100 25 C16 47u 25V C20 1000P 50V R92 1009 C13 22004716V D Q AO UO Ol MPG06G 3 n 2 R24 6900 D14 MPGO6G OPEN O Pit PCSTKO V4 RI26 R906 R907 R908 10K 100K 100K 100K P26 PA2 INTO 47K 001 5 stV PES ANS 930 b 6 R120 E2K R208 R201 4 GRILL 22K 18K D203 p Pse Infrared ud or 1 Ro05 15k 90 E ANS R123 10K p lt Rosa 202 cna 0 01 1618 D Lx SHUD Ey aN ZANT R205
9. IS gt i Ce your GB RH am cs 8205 0203 4 86 ID ES 208 38 B m o aX DR R20 Dii JP c3 8 002 cP Ne gt e og B C QA gt e 80 Is awa 7 o D 5 ON ryt i5 5 Q 0 i pe 323 JO NRA 128 LK BS una Po _ 0152 me lt C 0 3120 C A 0195 Diss NE cre QUE aL wy ON ope Cu E r a e ON EM 2 9 9 mA BC 25 TP 2 TP 3 TP 4 26 SANYO Printed in JAPAN
10. KS BEFORE PROCEEDING WITH ANY RE B REMOVING DOOR INTERLOCK SWITCH PAIR WORK WAIT AT LEAST 1 MINUTE UNTIL See Figure on page 1 THE CAPACITOR INTHE HIGH VOLTAGE AREA HAS 1 Disconnect all lead wires from the door inter FULLY DISCHARGED lock switch 2 Remove 2 screw secutring the lever stopper 3 Pull out the door interlock switch toward you A REMOVING INTERLOCK MONITOR SWITCH See Figure 1 on page 1 while pressing switch stopper 1 Disconnect all lead wires from the interlock moni 4 Make the necessary adjustments or replace tor switches ment of the switch by reversing step 3 and 2 Remove 2 screw securing the lever stopper check microwave energy leakage according to 3 Pull out the interlock monitor toward you while 1 ADJUSTMENT PROCEDURE FOR pressing switch stopper SWITCHES on page 1 Check proper operation 4 Make the necessary adjustment and perform a according to CHECKOUT PROCEDURE FOR microwave energy leakage check according to SWITCHES on page 7 1 ADJUSTMENT PROCEDURE FOR SWITCHES on page 1 Check proper operation according to PROCEDURE FOR SWITCHES on page 7 10 C REMOVING DOOR SENSING SWITCH See Figure on page 1 1 Disconnect all lead wires from the door sens ing switch and door interlock switch 2 Remove 2 screw securing the lever stopper 8 Pull out the door sensing switch toward you while pressing switch stopper together with door interl
11. OF CONTENTS Adjustment 2 2 1 2 Power output Measurement 2 Precautions and Repair Service Tips 2 Circuit Diagramo 3 CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT BE EXPOSED TO THE MICROWAVE ENERGY WHICH MAY RADI ATE FROM THE MAGNETRON OR OTHER MICROWAVE GENERATING DEVICE IF IT IS IMPROPERLY USED OR CONNECTED ALL INPUT AND OUTPUT MICROWAVE CONNEC TIONS WAVEGUIDE FLANGES AND GASKETS MUST BE SECURE NEVER OPERATETHE DEVICE WITHOUT A MICROWAVE ENERGY ABSORBING LOARD ATTACHED NEVER LOOK AN OPENWAVEGUIDE OR ANTENNA WHILTHE DEVICE IS ENERGIZED 1 ADJUSTMENT PROCEDURES TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE THE FOLLOWING ADJUST MENTS OF THE INTERLOCK SWITCHES SHOULD BE MADE ONLY BY AUTHORIZED SERVICE PER SONNEL A INTERLOCK SWITCH AND DOOR SENSING SWITCH ADJUSTMENT Figure 1 1 Loosen 2 screws securing the lever stopper 2 Adjust the lever stopper position so that it is pushed up and rotated counterclockwise until there is zero gap between the latch and the switch bodies when the door latch is securely locked 3 Tighten the lever stopper screws securely 4 Make sure the latch interlock switch and the door sensing switch open before the interlock monitor switches coses when the door is o
12. SANYO FILE NO SERVICE MANUAL Microwave Oven EMO SRT1 NX EMO SRT1 SG Model No Pro Code No EMO SRT1NX 437 517 01 EMO SRT1SG 437 517 00 Foreword Read this manual carefully especially precaution on microwave energy and follow the procedure strictly careless servicing and testing may expose yourself to the microwave energy leakage 0 PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY PRECAUTIONS Do not operate or allow the oven to be operated with the door open Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source and make repairs as necessary 1 Interlock operation 2 proper door closing 3 seal and sealing surfaces arcing wear and other damage 4 damage to or loosening of hinges and latches 5 evidence of dropping or abuse Before turning on microwave power for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections Any defective or misadjusted 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 REFERENCE NO SM 6410005 00 TABLE
13. SHION ASS Y FOOT 19 Spec FR P P E 7000 FR PET JAE IL SNYO 240V 20W METORO SGT 1358C VERTICAL SUS304 WPB 00 7 V 15G 1C25 M OMRON YAMATAKE V 5230D 142 V 16G 3C25 M OMRON P BOARD TABUCHI HAMSUNG 0 85 2200 N F PCB SOC SWP B D1 6 SWP B D1 6 PP ly Control Panel Parts 2000000 er 20 7 X Q 55 Key Service parts No __ Spe 0 1 617 227 4218 P C B COMP CONTROL C BOARD 2 617 219 6299 P C B COMP SWITCH SW BOARD 3 617 227 6939 CONTROL PLATE SUS430 HL 150 0 4 4 617 219 7180 PMMA 51617 220 2365 6 617 219 7296 505430 2BC T0 3 7 617 219 7289 SUS430 2 0 3 8 617 220 2372 9 617 219 7203 PC ABS S1500V 10 617 219 7258 PET ABS 11 617 220 2389 ABS 12 617 220 2396 FLAT CABLE UL20706 L170 20PBNCD NT MEME Parts marked with this sign have special Characterstics important for microwave leakage When replacing any of these parts use only Manufacturers specified parts 20 Door Parts 617 219 6657 DOOR ASSY COMP 21617 219 6787 DOOR ORNAMENT PLATE 3 617 229 6838 DOOR ORNAMENT PLATE SUS430 0 3 41617 219 6756 DOOR COVER 51617 227 6724 DOOR PANEL 6 617 227 6731 CHOKE DIELECTRIC FR PET 7 617 219 6763 DOOR HANDLE 91617 102 7495 SPECIAL SCREW CAP TIGHT 10 617 222 0802 NITTO NO 686P 11 617 222 0819 NITTO NO 686P 12 617 229 0485 13 617 230 6582 DOOR ORNAMENT PLATE E 21 INST MANUAL
14. VENT until the sensor cools down 0 flashes in the display 0 appears when the STOP CLEAR key is consecutively pressed five times Press STOP CLEAR to clear 0 and to operate the oven normally When D is indicated in the display D Press STOP CLEAR five times The buzzer beeps and the 0 changes to a flashing O 8 Press REHEAT START five times The buzzer beeps and the flashing 0 changes to a steadily lit 0 When D disappears the oven may be used normally The following symptoms are not malfunctions Clicking sounds during heating These are switching sounds when switching the output Snapping sounds during heating noise is made when the oven wall expands during oven or grill heating Revolving fan after heating The fan continuously revolves to ventilate the oven or cool down the infrared ray sensor for a maximum of 30 minutes Sound when opening the door or using This is the sound of motor stabilizing the infrared ray sensor SET TEMP Click sound although nothing is done gt This is the power turning off sound when the auto power off function is activated About 5 minutes after heating finishes Interior light doesn t turn on during heating gt lt The interior light turns off seconds after the start of heating to Interior light turns off halfway during heating save energy Refer to page 9 Specifications Microwave power out p
15. er temperature rise shall be 8 C to 12 C 9 For correct Power output measurement the line voltage under load must be 230 2Volts 4 PRECATIONS AND REPAIR SERVICE TIPS PRELIMINARY A SINCE NEARLY 4 000 VOLTS EXISTS IN SOME CIRCUITS OF THIS MICROWAVE OVEN RE PAIRS SHOULD BE CARRIED OUT WITH GREAT CARE B TO AVOID POSSIBLE EXPOSURE TO MICRO WAVE ENERGY LEAKAGE THE FOLLOWING PRECATIONS MUST BETAKEN BEFORE SER VICING 1 Before the power is applied a Open and close door several times to make sure the interlock switch door sensing switch and interlock monitor switch operate properly Listen for the clicking sound from switches Make sure the interlock monitor switch is closed after the interlock switch and door sens ing are open when the door is opened See pages 1 and 7 b Make sure the perforated screen and the choke dielectric of the door are correctly mounted 2 After the power is applied a Open and close the door to see if the interlock mechanism operates properly b Check microwave energy leakage with a leak age detector and confirm the energy leakage is below 5mW cm 3 Do not operate the unit until it is completely repaired of any of the following conditions a Door is not closed firmly against the cavity front b The hinge is broken c The choke dielectric or the door seal is dam aged d The door is bent or warped or there is any other visible damage to the oven that may cause m
16. erminals with an ohm meter on highest scale Figure 7 Normal reading Momentarily indicates several ohms and gradually to 10 meg ohms Abnormal reading Indicates continuity or 10 meg ohms from the beginning HIGH VOLTAGE DIODE Measure the resistance Across two terminals with an ohm meter on highest scale Figure 8 Normal reading Indicate about middle position in one direction forward and infinite ohms in the reverse direction using ohm meter with a 9V battery NOTE Some digital meter may show more than 0 ohms or infinite ohms even in a forward direction because the low mea suring voltage of the meter does not allow the meter to pass through the high voltage diode Use an ohm meter with a 9V battery Abnormal reading Indicates continuity or infinite ohms in both directions FUSE DIODE Measure the resistance Across two terminals with an ohm meter on highest scale Figure 9 Normal reading Indicate infinite ohms in both directions Abnormal reading Indicates continuity in both directions or continuity in one direction and infinite ohms in reversed direction THERMISTOR CHART 8000 7000 6000 5000 4000 3000 2000 1000 Magnetron 0 Resistance Thermistor connector Temperature 7 DISASSEMBLY INSTRUCTIONS THE OVEN MUST BE DISCONNECTED FROM THE ELECTRICAL OUTLET WHEN MAKING REPLACE MENTS REPAIRS ADJUSTMENT OR CONTINUITY CHEC
17. frared sensor to ther mounting place certainly as shown in figure 16 Shatter Filter Figure 16 Adjustment Method for Infrared sensor When Control PCB or Infrared sensor is changed please carry the following Initialization adjustment out for the Infrared sensor Procedure 1 Prepare 250g 59 tap water and ice 500g 59 2 Pour water and ice into a plastic tray with minimum 195mm inner diameter cylinder maximum 60mmm height 3 Plug in power cord 4 Open the door 0 will apper in the display window 5 Place the turn table base and turn table 6 Place the Plastic tray in the centre of the turn table in the oven 7 Push the GRILL key 0 s will appear in the display window 8 Push together with MORE LESS and POWER key for 1 second and more Buzzer will beep tone 9 Press the TEMP key once Buzzer will beep tone and the O s changes to a 0 D D will flasing 10 Press the MORE LESS key once Buzzer will beep tone Temperature of Ice with water will be corrected automatically while measure the ice with water After 3 seconds its corrcted water temperature will appear in the display window 11 Press the STOP CLEAR key once Buzzer will beep tone and the 0 C changes to a flashing 0 12 Press STOP CLEAR key once Buzzer will beep tone and the 0 will appear in the display window Flashing D will disappear 13 Take the plastic tray out from oven cavity 13
18. icrowave energy leakage Note Always keep the seal clean e Make sure that there are no defective parts in the interlock mechanism f Make sure that there are no defective parts in the microwave generating and transmission assembly especially wave guide 4 The following items should be checked after the unit is repaired a The interlock monitor switch is connected cor rectly and firmly b The magnetron gasket on the magnetron is properly positioned c Waveguide and oven cavity are intact No leakage of microwave energy d The door can be properly closed and the safety switches work properly e The oven must be stopped when the door is opened or the time is up The oven must not be operated with any of the above components removed or by passed 5 CIRCUIT DIAGRAM Timer Thermistor Magnetron Detector Infrared sensor H VDiode Shatter motor H V Capacitor Fuse Diode H V Transforemer g Geared motor Lower Heater Upper Heater Main Relay Monitor SW Lamp 1 Main circuit side BI tor ower moto White Thermal limiter Door Interlock SW White Noise filter Won Mos Figure 3 Caution The voltage between filament leads of magnetron is about 3 3VA C but the filament carries 4KV DC high voltage with respect to ground Never touch these leads with bare hand during operation 6
19. marked with this sign are supplied with Parts marked with this sign have special high voltage exceeding 250V Characterstics important for microwave leakage When replacing any of these parts use only Manufacturers specified parts 18 Main body Parts Key No Service parts Description 617 228 6303 617 220 9593 617 202 1577 617 221 7895 617 227 6847 617 227 6854 617 154 4701 617 219 7418 617 206 6295 617 192 6743 617 192 6729 617 225 0748 617 219 7401 617 219 6954 617 220 6585 617 227 7097 617 229 7743 415 002 8907 617 115 3422 617 129 1001 617 229 7699 617 227 7042 617 187 2217 617 227 7059 617 227 7028 617 215 9133 617 160 0421 617 193 3024 617 227 4263 617 227 7165 617 227 7172 617 227 7134 617 218 0571 617 228 2084 617 228 8420 423 017 8003 617 205 5800 617 207 6836 617 205 5817 617 144 5435 617 219 6633 FRAME DUCT THERMISTOR ASS Y HEAT INSU HEATER ASS Y UPPER HEATER ASS Y LOWER SPECIAL SCREW HEAT INSU SHAFT ASSY SPECIAL WASHER PARTS BASE GEAR MOTOR CAVITY COVER ANTENNA COMP DETECTOR COMP BLOWER COMP CORD COMP NX MAGNETRON 2M243H A LAMP THERMOSTAT CORD COMP SG LEVER SPRING LEVER LEVER STOPPER MICRO SWITCH DOOR INTER MICRO SWITCH DOOR SENSING MICRO SWITCH MONITOR P C B COMP POWER LEAD WIRE ASS Y DIODE LEAD WIRE ASS Y FUSE DIOD TRANSFORMER CAPACITOR P C B COMP NOIZE FILTER INSU SHEET FUSE 250V 8A SPRING CLIP SPRING FOOT CU
20. ock switch 4 Make the necessary adjustments or replace ment of the switch by reversing step 3 and check microwave energy leakage according to 1 ADJUSTMENT PROCEDURE FOR SWITCHES on page 1 Check proper opera tion according to CHECKOUT PROCEDURE FOR SWITCHES on page 7 WHEN REPLACING ANY DOOR MICROSWITCH REPLACE ONLY WITH THE SAME SWITCH SPECI FIED ON THE PARTS LIST D REMOVING FUSE Remove the 8 A fuse with screwdriver NOTES When replacing the 8 fuse be sure to use the exact repair part If the 8 A fuse blows immediately check the primary and secondary interlock switch the relays RL 4 and RL 1 on the control circuit board and the interlock monitor switch according to CHECKOUT PROCE DURE FOR SWITCHES on page 7 Make sure to check the microwave energy leakage according to 1 AD JUSTMENT PROCEDURE FOR SWITCHES on page 1 when the primary and secondary interlock switches the relay RL 4 and RL 1 or the interlock monitor switch is adjusted or replaced If the interlock switch the relay RL 4 and RL 1 or the interlock monitor switch operate properly determine which of the following is defective control circuit board high voltage transformer high voltage capacitor high voltage diode or magnetron E REMOVING CONTROL CIRCUIT BOARD 1 Remove the cabinet frame 2 Remove 2 screws securing the P C B for Power with bracket to the cavity Figure 11 Then take out it
21. pened very slowly according to PROCEDURE FOR SWITCHES on page 7 5 Make sure the microwave energy leakage is below the limit of the regurationb mW cm when measured with a detector All service adjustments must be made for mini mum microwave energy leakage readings B DOOR INTERLOCK SWITCHES ADJUSTMENT Figure 1 1 Loosen 2 screws securing the lever stopper 2 Adjust the lever stopper position so that it is pushed Test Procedures and Troubleshooting 4 10 Disassembly Instructions 11 14 Exploded View and Parts List 15 22 Overall Circuit 23 25 up and rotated counterclockwise until there is zero gap between the latch lever and the switch bodies when the door latch is securely locked 4 Make sure the latch interlock switch open before the interlock monitor switches coses when the door is opened very slowly according to PROCEDURE FOR SWITCHES on page 6 5 Make sure the microwave energy leakage is below the limit of the reguration 5 mW cm when measured with a detector All service adjustments must be made for mini mum microwave energy leakage readings NOTE If the interlock monitor circuit operates and at the same time the fuse blows with the door open be sure to replace the relay circuit board Interlock switch and monitor switch Interlock monito
22. r switch Door sensing switch Door Interlock switch Screws Figure 1 2 SPECIFICATIONS Microwave output 700W Frequency 2 450MHz Power supply 220 230V 50Hz Rated current Microwave 5 0 Amp Heater 5 7 Amp Safety Device Thermal protector Magnetron 135 C Open Thermistor Oven Fuse Cartridge Type 250V8A Micro switch Safty Relay Door Interlock Switch Interlock monitor Switch Door sensing Switch and SaftyRelay Max input time Electronic Digital up to Reheat Oven 30min More Less 120 Overall Dimensions 510 W x458 D x345 H mm Oven cavity size 352 W x352 D x235 H mm Effective Capacity of Oven Cavity 25 1liters Net weight 20Kg 3 POWER OUTPUT MEASUREMENT 1 Prepare 1000 5cc tap water 2 Adjust water temperature to 10 2 3 Pour the water into a container made of borosili cate glass 190mm outer diameter cylinder max imum 3 mm thickness NOTE Use the container kept on the room temperature 4 Place the container in the center of the oven cavity 5 Set the heating time for 60 seconds and rating full power and then start oven 6 Take container out immediately when heating time up 7 Stir water for making even water temperature in the container 8 Measure the water temperature Wat
23. ut Frequency Power consumption Microwave oven heating Power consumption ven heatin 9 eaung Temperature adjustment range Grill heating Power consumption Input power supply Outside Dimensions Common specifications Turntable dimensions Weight interior dimensions effective 700 W corresponding to 500 W 200 W 2 450 MHz 1 090 W during 700 W high frequency output 1 330 W Heater 1 300 W at 230 V 40 fermentation 100 250 930 W Heater 900 W at 230 V 220 240 V single phase 50 Hz 510 mm W x 458 mm D x 345 mm H 339 mm W x 352 mm D x 209 mm H Operating time for this oven at 230 250 C is 10 minutes After this the temperature switches automatically to 220 C 340 mm dia 20 kg According to IEC 705 test procedures 45 Specifications subject to change without notice 8 EXPLODED VIEW AND PARTS LIST Main body Parts Parts marked with this sign have special Characterstics important for microwave leakage Parts marked with this sign are supplied with When replacing any of these parts use only high voltage exceeding 250V Manufacturers specified parts 16 Main body Parts Characterstics important for microwave leakage When replacing any of these parts use only Parts marked with this sign have special Manufacturers specified parts Parts marked with this sign are supplied with high voltage exceeding 250V 17 Main body Parts Parts
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