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10. Wiring Diagrams

10-2 Wiring Diagrams

Summary of Contents for 401.85052010

Page 1: ...5059010 1 Precaution 2 Specification 3 Operating Instructions 4 Installation 5 Disassembly and Reassembly 6 Alignment and Adjustments 7 Troubleshooting 8 Exploded Views and Part List 9 PCB Diagrams 10 Wiring Diagrams 11 Schematic Diagrams ...

Page 2: ...y 24 6 6 Adjustment of Primary Switch Door Sensing Switch and Monitor Switch 24 6 7 Vent Exhaust Blower Motor 25 6 8 Thermal Cutout TCO S 26 6 8 1 Oven Thermal Cutout Flame sensor 26 6 8 2 Replacement of Flame Sensor 26 6 8 3 Hood Thermal Cutout 27 6 8 4 Bottom Thermal Cutout 27 6 8 5 Magnetron Thermal Cutout 27 6 9 Output Power of Magnetron 28 6 10 Procedure for Measurement of Microwave Energy Le...

Page 3: ...3 1 Precaution ...

Page 4: ...ck Monitor Switch Replace all of the following at the same time Primary door sensing switch and power relay as well as the Interlock Monitor Switch The correct adjustment of these switches is described elsewhere in this manual Make sure that the fuse has the correct rating for the particular model being repaired 13 Design Alteration Warning Use exact replacement parts only i e only those that are ...

Page 5: ...oltage is maintained within specified limits by close tolerance safety related components and adjustments If the high voltage exceeds the specified limits check each of the special components PRECAUTION There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH VOLTAGE TRANSFORMER secondary and filament terminals It is extremely dangerous to work on or near th...

Page 6: ...T POWER 1 100 W OPERATING FREQUENCY 2 450 MHz MAGNETRON OM75P 21 COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 297 8 W x 161 2 H x 151 8 D OVEN CAVITY DIMENSIONS 2013 16 W x 1013 16 H x 149 16 D SHIPPING DIMENSIONS 333 8 W x 203 16 H x 197 16 D NET WEIGHT 50 44 lbs 85053 51 76 lbs SHIPPING WEIGHT 59 69 lbs 85053 61 23 lbs 2 Specifications ...

Page 7: ...cifications 2 2 Accessory Item Description Glass tray Roller guide ring Top Template Wall template Installation instructions Use and Care Guide Hardware kit Grease filter Charcoal filter Shelf Exhaust adaptor ...

Page 8: ...8 3 Operating Instructions 3 1 Control Panel ...

Page 9: ...uctions 3 2 Features External Views 389 6 mm 758 9 mm 430 4 mm 406 5 mm Door Handle Window with Metal Shield Cooking Guide Wire Rack Door Safety Lock System Oven Control Panel Glass Turntable Model and Serial Number Plate ...

Page 10: ...nd or peninsula It must be mounted to both a top cabinet and wall VENT BLOWER The vent or exhaust blower is located at the top of the oven It is shipped for recirculating exhaust but can be changed to rear exhaust or vertical See installation instrustions on how to change and or blower section on how to remove COOKTOP LIGHTS One 20 watt screw base halogen bulb is located on the bottom The bulb is ...

Page 11: ... parts are cool If may stay on for 30 minutes or more after the cooktop and microwave controls are turned off Grill REMOVAL The top full width grill is removable for service to some components such as oven light cavity T C O vent motor capacitor and fuse TO REMOVE Grill 1 Disconnect oven power 2 Remove screws 2 from grill outer case 3 Lift off grill REMOVING OVEN FROM WALL 2 PEOPLE REQUIRED Oven i...

Page 12: ... 2 PEOPLE REQUIRED Oven is hooked on metal tabs at bottom of wall mounting plate and to cabinet by 3 top cabinet bolts 5 1 Replacement of High Voltage Transformer Parts Explaination Photo Explaination Grille 1 Disconnect oven power 2 Remove Grille 1 Remove 2 screws 2 Slide the Grille to the left then pull it straght out Panel Outer 3 Remove Panel Outer ...

Page 13: ... 1 Replacement of High Voltage Transformer Parts Explaination Photo Explaination High voltage capacitor 4 Discharge the High voltage capacitor 5 Disconnect all the leads Base Bottom 6 Remove Base bottom HV Trans 7 Take out the HV Trans ...

Page 14: ... the wave guide 3 Take out the magnetron very carefully NOTE1 When removing the magnetron make sure that it antenna does not hit any adjacentparts or it may be damaged NOTE2 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition NOTE3 Reconnect the lead wire to thermal cutout mounted on the magnetron before replace...

Page 15: ...sconnect all lead wires from Fan Motor and High Voltage Transformer 3 Put out Assy Fan Motor 4 Remove Fan Blade 5 Remove screws 2 securing Fan Motor 6 Replace Fan Motor to new one 7 After replacing Fan Motor and reconnecting lead wires make sure that the connectors are connected securely on the terminal of Fan Motor by pulling the wires lightly ...

Page 16: ... the gap between Door A and Door C to remove Door C Be careful when handling Door C because it is fragile Then remove the door assembly Removal of Door C 2 Insert flat screwdriver into the gap between Door A and Door C to remove Door C Becareful when handling Door C because it is fragile Removal of Key Door Spring 3 Detach the spring and key door from Door ...

Page 17: ...s then handle is detached from Door A Removal of Door E 5 Following the procedure as shown in the figure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound Insertion depth of the thin metal plate should be 0 5mm or less PRECAUTION PERFORM MICROWAVE LEAKAGE TEST ...

Page 18: ...tch and power relay 4 When the above four switches operate properly check if any other part such as the control circuit board blower motor or high voltage transformer is defective 5 6 Replacement of Drive Motor Parts Explaination Photo Explaination Drive Motor 1 Disconnect power and remove bottom plate screws 5 2 Remove bottom plate and disconnect the turntable motor drive 3 Remove turntable motor...

Page 19: ...otor driver and located on the upper side of the cavity The oven uses a top feed wave guide The stirrer is located in the wave guide and the motor is located on the wave guide 1 Disconnect power and open the door 2 Remove the clip and turn the stirrer cover left 3 Remove stirrer cover and the stirrer will come with it ...

Page 20: ...ntrol circuit board Removal of P C B Assembly 1 Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of membrane panel 2 Remove screws 4 securing the control circuit board 3 Lift up the control circuit board from the Ass y control box 4 When reconnecting the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic ...

Page 21: ... avoid injury from the heat of the bulb Parts Explaination Photo Explaination Cooktop Lamp 1 Unplug the oven or turn off the power at the main power 2 Remove the bulb cover and mounting screws 3 Replace the bulb with a 20 watt appliance bulb 4 Replace the bulb cover and mounting screws 5 Turn the power back on at the main power supply ...

Page 22: ...assembly 5 10 Replacement of Oven Light Parts Explaination Photo Explaination Oven Light 1 Remove the Grille 2 Remove the COVER LAMP by removing the screw and put up the lever 3 Replace the bulb with a 40 watt appliance bulb ...

Page 23: ...Y 4ERMINAL 0RIMARY 4ERMINAL 6 2 Magnetron 1 Continuity checks can indicate only an open filament or a shorted magnetron To diagnose an open filament or shorted magnetron 2 Isolate the magnetron from the circuit by disconnecting its leads 3 A continuity check across the magnetron filament terminals should indicate one ohm or less 4 A continuity check between each filament terminal and magnetron cas...

Page 24: ...gether Then follow the adjustment procedures below After repair and adjustment be sure to check the continuity of all interlock switches and the interlock monitor switch 1 When mounting Primary switch and Interlock Monitor switch to Latch Body consult the figure 2 No specific adjustment during installation of Primary switch and Monitor switch to the latch body is necessary 3 When mounting the Latc...

Page 25: ...eedle should rise then fall cap is charging then discharging TO TEST BLOWER WINDINGS 1 Disconnect power and remove grill 2 Open control panel and discharge capacitor 3 Disconnent two wires to run capacitor Continuity test across the two wires should be approximately 50 ohms of resistance This test allows you to read across all three windings at the same time TO REMOVE VENT BLOWER 1 Remove unit fro...

Page 26: ...area 4 Magnetron thermal cutout on magnetron 6 8 1 Oven Thermal Cutout Flame sensor The oven thermal cutout Cavity TCO is located on the top side of the oven cavity beside exhaust duct with a temperature rating of 248 F 120 C and is non resetable The cutout is tightly held to the top of the oven cavity under the duct upper 6 8 2 Replacement of Flame Sensor Disconnect oven power Remove Grill Panel ...

Page 27: ...e enough to close the Hood Thermal Cutout and force the fan to run While at moderate high temperature we do want it to run however during a fire it is advantageous to NOT have the vent fan running So if a fire were to start on the stove top the Bottom Thermal Cutout would open at 248 F 120 C and remove all power to the microwave oven This cutout is designed to not be resetable To Remove Magnetron ...

Page 28: ...l place it in the center of the cooking tray Set the oven to high power and operate for 41 seconds exactly 3 seconds included as a holding time of magnetron oscillation 4 When heating is finished stir the water again with the thermometer and measure the temperature T2 5 Subtract T1 from T2 This will give you the water temperature rise T 6 The output power is obtained by the following formula Outpu...

Page 29: ...surement and meter accuracy 6 11 Check for Microwave Leakage 1 Remove the outer panel 2 Pour 275 15cc of 20 5 C 68 9 F water in a beaker which is graduated to 600cc and place the beaker in the center of the oven 3 Start the oven at the highest power level 4 Set survey meter dual ranges to 2 450MHz 5 Using the survey meter and spacer cone as described above measure near the opening of magnetron the...

Page 30: ...ity behind the grill To Service 1 Disconnect power and remove Panel outer 2 Separate retainer from receptacle and unplug sensor SENSOR TEST QUICK TEST 1 With 2 fingers touch and hold the following pads at the same time Auto Defrost and 2 Observe diagnostic number in display Numbers approximate 15 185 Normal verify with detection test 213 or Higher Sensor failed to open sensor unplugged wiring or s...

Page 31: ...rmer NOTE 2 Oven does not accept key input Key input is not in Sequence Open or loose connection of membrane key pad to Ass y PCB Shorted or open membrane panel Refer to operation procedure Replace PCB main Defective Ass y PCB Timer starts countdown but no microwave Off alignment of latch switches Open or loose connection of high Adjust door and latch switches Check high voltage component accordin...

Page 32: ...Off alignment of primary interlock Defective secondary interlock S W Open or loose wiring of Replace turntable motor Loud buzzing noise can be heard Loose fan and fan motor Tighten screws of fan motor Tighten screws of H V Transformer Replace H V Diode Loose screws on H V Transformer Shorted H V Diode Microwave output is low Decrease in power source voltage Consult electrician Open or loose wiring...

Page 33: ...ing foods such as soup cocoa or milk Sparks Turntable motor does not rotate Open or loose wiring of turntable motor Replace turntable motor Defective turntable motor Oven stops operation during cooking Open or loose wiring of primary interlock switch Adjust door and latch switches Operation of thermal cutout Magnetron Sparks Metallic ware or cooking dishes touching on the oven wall Inform the cust...

Page 34: ...smart board If necessary replace sensor If error code appears when starting sensor function replace smart board E 12 Sensor short error Check shorted sensor or smart board If necessary replace sensor If error code appears when starting sensor function replace smart board E 13 Sensor T1 max time error Check sensor If necessary replace sensor If error code appears when starting sensor function repla...

Page 35: ...02 P443 G244 M036 Y097 P012 M001 P007 M015 M471 M131 M058 C309 P433 P359 P086 P024 P026 P036 P025 P432 P190 M021 H018 P109 M023 M098 M040 M039 M528 M035 M443 H012 Z009 P393 M453 M029 M155 M038 X009 M048 T037 T036 P001 M034 M051 M059 M059 M131 M049 M544 B064 B048 B047 B048 B013 C144 M087 M068 M017 B022 M116 W002 U005 U007 U004 U013 U019 M131 U058 U001 M060 P090 S259 P088 P091 P089 U008 M058 85052 ...

Page 36: ...M086 M102 P443 G244 M036 Y097 P012 M001 P007 M015 M471 M131 M058 C309 P433 P432 P190 M021 H018 P109 M023 M098 M040 M039 M528 M035 M443 H012 Z009 P393 M453 M029 M155 M038 X009 M048 T037 T036 P001 M034 M051 M059 M059 M131 M049 M544 B064 B048 B047 B048 B013 C144 M087 M068 M017 B022 M116 W002 U005 U007 U004 U013 U019 M131 U057 U001 M060 P090 S259 P088 P091 P089 U008 P359 P086 P024 P026 P036 P025 M058 ...

Page 37: ...02 P443 G244 M036 Y097 P012 M001 P007 M015 M471 M131 M058 C309 P433 P432 P190 M021 H018 P109 M023 M098 M040 M039 M528 M035 M443 H012 Z009 P393 M453 M029 M155 M038 X009 M048 T037 T036 P001 M034 M051 M059 M059 M131 M049 M544 B064 B048 B047 B048 B013 C144 M087 M068 M017 B022 M116 W002 U005 U007 U004 U013 U019 M131 U057 U001 M060 P090 S259 P088 P091 P089 U008 P359 P086 P024 P026 P036 P025 M058 85059 ...

Page 38: ...MHC4 MHC5 WHITE COATING 1 SA D005 DE01 00127A FILM DOOR JVM 1860 POLYESTER PET L479 T0 1 SA D006 DE64 01849A DOOR C MHC4 PP 1 SA D007 DE61 00086A SPRING KEY HSWR PI0 95 D8 35 L47 1 SA D011 DE64 01308A DOOR KEY MODULAR 2 POM BLK 1 SA D020 DE94 02375B ASSY HANDLE 85052 PC WHITE MHC4 MD4 SEA 1 SA D024 DE64 02445B SCREEN DOOR B 85052 REINFORCED GLASS T3 1 SA D046 DE64 01851A DOOR CAP MHC4 PP 1 SA D049...

Page 39: ...6 DE63 00659A COVER LAMP MODULAR4 EGI SECC T0 4 1 SA M087 DE63 00663A COVER STIRRER MODULAR4 PP TB53 1 SA M098 DE61 00164A HOLDER WIRE OTR8 PP JI350 NTR 1 SA M102 DE47 00006A SOCKET LAMP OTR7 250V 75W 250Vx187 1 SA M116 DE61 30129A SUPPORT PCB DASS T9N 3 SA M131 DE66 00123A WIRE SADDLE JE620 610BF WF 3 SA M155 DE94 02379A ASSY BASE PLATE 85053 SECC T0 6 MODULAR 1 SNA M443 DE47 20007A THERMOSTAT NT...

Page 40: ...P443 DE67 00263A DUCT UPPER REAR MODULAR4 EGI SECC T0 4 1 SA S259 DE60 10111A SCREW INCH MACH UNC1 4 L50 SWRCH18A 1 SNA T001 DE74 20002C TRAY COOKING MW7692W GLASS T6 1 SA T036 DE66 00227A BLADE STIRRER MODULAR4 ALCOT T0 6 1 9 CU 1 SA T037 DE61 01061A HOLDER STIRRER MD3 SPS 1 SNA T166 DE92 90189U ASSY GUIDE ROLLER 1 0CUFT PPS 1 SC U001 DE94 02365B ASSY BASE BOTTOM 85052 SECC T0 4 MHC4 W 1 SA U004 ...

Page 41: ...DE01 00127A FILM DOOR JVM 1860 POLYESTER PET L479 T0 1 SA D006 DE64 01849A DOOR C MHC4 PP 1 SA D007 DE61 00086A SPRING KEY HSWR PI0 95 D8 35 L47 1 SA D011 DE64 01308A DOOR KEY MODULAR 2 POM BLK 1 SA D024 DE64 02445A SCREEN DOOR B 85053 85059 REINFORCED G 1 SA D037 DE94 02371A ASSY DOOR A 85053 STS201 MHC4 MD4 SEARS 1 SA D046 DE64 01851A DOOR CAP MHC4 PP 1 SA D049 DE94 02366C ASSY DOOR 85053 PC STS...

Page 42: ...00663A COVER STIRRER MODULAR4 PP TB53 1 SA M098 DE61 00164A HOLDER WIRE OTR8 PP JI350 NTR 1 SA M102 DE47 00006A SOCKET LAMP OTR7 250V 75W 250Vx187 1 SA M116 DE61 30129A SUPPORT PCB DASS T9N 3 SA M131 DE66 00123A WIRE SADDLE JE620 610BF WF 3 SA M155 DE94 02379A ASSY BASE PLATE 85053 SECC T0 6 MODULAR 1 SNA M443 DE47 20007A THERMOSTAT NT 101 250V 10A 125V 15A 150 1 SA M453 DE47 20034A THERMOSTAT NT ...

Page 43: ...DE74 20002C TRAY COOKING MW7692W GLASS T6 1 SA T036 DE66 00227A BLADE STIRRER MODULAR4 ALCOT T0 6 1 9 CU 1 SA T037 DE61 01061A HOLDER STIRRER MD3 SPS 1 SNA T166 DE92 90189U ASSY GUIDE ROLLER 1 0CUFT PPS 1 SC U001 DE94 02365A ASSY BASE BOTTOM 85053 85059 SECC T0 4 1 SA U004 DE61 00319B BRACKET BOTTOM LAMP OTR 9 JVM 1860BF SEC 1 SC U005 DE67 40063A GLASS COOK TOP LAMP GLASS T3 2 W59 L15 1 SA U007 DE...

Page 44: ...OR E SMH7175 COATING 1 SA D005 DE01 00127A FILM DOOR JVM 1860 POLYESTER PET L479 T0 1 SA D006 DE64 01849A DOOR C MHC4 PP 1 SA D007 DE61 00086A SPRING KEY HSWR PI0 95 D8 35 L47 1 SA D011 DE64 01308A DOOR KEY MODULAR 2 POM BLK 1 SA D020 DE94 02375A ASSY HANDLE 85059 PC BLACK MHC4 MD4 SEA 1 SA D024 DE64 02445A SCREEN DOOR B 85053 85059 REINFORCED G 1 SA D026 DE63 00654A COVER HANDLE MODULAR4 PC BLK S...

Page 45: ...E63 00659A COVER LAMP MODULAR4 EGI SECC T0 4 1 SA M087 DE63 00663A COVER STIRRER MODULAR4 PP TB53 1 SA M098 DE61 00164A HOLDER WIRE OTR8 PP JI350 NTR 1 SA M102 DE47 00006A SOCKET LAMP OTR7 250V 75W 250Vx187 1 SA M116 DE61 30129A SUPPORT PCB DASS T9N 3 SA M131 DE66 00123A WIRE SADDLE JE620 610BF WF 3 SA M155 DE94 02379A ASSY BASE PLATE 85053 SECC T0 6 MODULAR 1 SNA M443 DE47 20007A THERMOSTAT NT 10...

Page 46: ...R MODULAR4 EGI SECC T0 4 1 SA S259 DE60 10111A SCREW INCH MACH UNC1 4 L50 SWRCH18A 1 SNA T001 DE74 20002C TRAY COOKING MW7692W GLASS T6 1 SA T036 DE66 00227A BLADE STIRRER MODULAR4 ALCOT T0 6 1 9 CU 1 SA T037 DE61 01061A HOLDER STIRRER MD3 SPS 1 SNA T166 DE92 90189U ASSY GUIDE ROLLER 1 0CUFT PPS 1 SC U001 DE94 02365A ASSY BASE BOTTOM 85053 85059 SECC T0 4 1 SA U004 DE61 00319B BRACKET BOTTOM LAMP ...

Page 47: ...47 9 PCB Diagrams 9 1 PCB Diagrams ...

Page 48: ...C901 100nF C105 5V R708 20K D709 1N4148M D203 MM4148 47uF C501 C103 1nF 20K R804 C302 100nF 100 R201 MM4148 D209 1N4148M D708 RY204 AC5 S DC12V KRC246 TR204 1N4007 D214 AC5 S DC12V RY208 R707 2K R103 12K RY207 AC5 S DC12V 20K R711 2 1 4 3 F2 SMW250 04V_RED CN301 100nF XTL101 8 000MHz D217 MM4148 C113 TR504 KRC246 R502 220 MM4148 D212 5V D201 MM4148 R903 2K MM4148 D207 5V R305 2K R203 10K TR203 KRC...

Page 49: ...49 10 Wiring Diagrams 10 1 Wiring Diagrams ...

Page 50: ...50 10 Wiring Diagrams 10 2 Wiring Diagrams ...

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