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6. DESCRIPTION OF OPERATING SEQUENCE

6.1. Variable power cooking control (NN-K152WF)

The coil of power relay B (RY1) is energized intermittently by the digital programmer circuit,
when the oven is set at any power selection except for High power position. The digital
programmer circuit controls the ON-OFF time of power relay B contacts in order to vary the
output power of the microwave oven from ”Low” to “High” power. One complete ON and OFF
cycle of power relay B is 22 seconds. The relation between indications on the control panel and
the output of the microwave oven is as shown in table.

NOTE:

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Содержание NN-K153WF

Страница 1: ...103WF NN K123MF BPQ U K EPG Germany France Italy Finland Spain Portugal Greece Poland Holland WPG Switzerland Please file and use this specified manual together with the service manual for Model NN K152WF NN K102WF ORDER NO SIMMC0203001C2 SPECIFICATIONS 1 ...

Страница 2: ...2003 Shanghai Matsushita Microwave Oven Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law 2 ...

Страница 3: ...3 ...

Страница 4: ...1 SCHEMATIC DIAGRAM NN K103WF 2 SCHEMATIC DIAGRAM NN K153WF NN K123MF 4 ...

Страница 5: ...her appliances the microwave oven is high voltage high current equipment Though it is free from danger in ordinary use extreme care should be taken during repair CAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron 5 ...

Страница 6: ...oltage capacitor terminal of lead wire from diode to chassis ground with an insulated handle screwdriver to discharge WARNING There is high voltage present with high current capabilities in the circuits of the high voltage winding and filament winding of the high voltage transformer It is extremely dangerous to work on or near these circuits with oven energized DO NOT measure the voltage in the hi...

Страница 7: ...erting nails wire etc through any holes in the unit during operation Never insert a wire nail or any other metal object through the lamp holes on the cavity or any other holes or gaps because such objects may work as an antenna and cause microwave leakage 3 6 Confirm after repair 1 After repair or replacement of parts make sure that the screws of the oven etc are neither loose nor missing Microwav...

Страница 8: ...ot handled with care 4 MEASUREMENTS AND ADJUSTMENTS 4 1 Adjustment of primary latch switch secondary latch switch and short switch 1 When mounting Primary latch switch Secondary latch switch and short switch to door hook assembly mount the Primary latch swith the Secondary latch switch and the short switch to the door hook assembly as shown in table NOTE No specific adjustment during installation ...

Страница 9: ...owever due to the complexity of IEC test procedures it is recommended to test the magnetron using the simple method outlined below Necessary Equipment 1 liter beaker Glass thermometer Wrist watch or stopwatch NOTE Check the line voltage under load Low voltage will lower the magnetron output Take the temperature readings and heating time as accurately as possible 1 Fill the beaker with exactly one ...

Страница 10: ...ble TABLE 1L 1min test RATED OUTPUT TEMPERATURE RISE 800W IEC60705 Min 8 C 5 EXPLODED VIEW AND PARTS LIST 6 PARTS LIST NOTE 1 When ordering replacement part s please use part number s shown in this part list Do not use description of the part 2 Important safety notice Components identified by mark have special characteristics important for safety When replacing any of these components use only man...

Страница 11: ...SWITCH 1 K103WF SECONDARY LATCH SWITCH 17 F61415U30XN MICRO SWITCH 1 K153WF K123MF SECONDARY LATCH SWITCH 18 F61454J50XN THERMAL CUTOUT 1 K103WF 185 C OFF 19 F61785U30XN MICRO SWITCH 1 SHORT SWITCH 20 2M210 M1G MAGNETRON 1 21 F60905G10XN H V CAPACITOR 1 1 0 F 2100V 23 F621B5G10MN H V TRANSFORMER 1 24 F62025G10XN DIODE 1 25 F606V5G10XN PROTECTOR DIODE U 1 26 ANE6230Z70BP FUSE 1 8A 250V 28 F63265U30...

Страница 12: ...N THERMAL CUTOUT 1 K103WF 67 C ON 77 C OFF 44 F0922000AE CUSHION RUBBER C 1 45 F0922000EF CUSHION RUBBER C 1 46 F04905U60HEP ENERGY LABEL 1 K153WF EPG 46 F04905U60SEP ENERGY LABEL 1 K123MF EPG 46 F04905U50HEP ENERGY LABEL 1 K103WF EPG 47 F01505G50BP NO TOUCHING LABEL 1 BPQ 48 F02395G50BP AC CORD CAUTION LABEL 1 BPQ 49 F0923000AL CUSHION RUBBER C 1 50 F62385G50XN SPACER 1 K103WF 7 DOOR ASSEMBLY 12 ...

Страница 13: ... K123MF D3 F302K5G10XN DOOR E U 1 D4 F30215G10XN DOOR KEY SPRING 1 D5 F30855G10XN DOOR C 1 D6 F31455G10XN DOOR SCREEN A 1 D7 F31465U30XN DOOR SCREEN B 1 8 WIRING MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030A5G60BP LEAD WIRE HARNESS 1 K153WF K123MF W1 F030A5U50BP LEAD WIRE HARNESS 1 K103WF 9 ESCUTCHEON BASE ASSEMBLY 13 ...

Страница 14: ...F E5 A67004T00AP RUBBER CONNECTOR 1 K153WF K123MF E6 AEDDHJ5G60XN DISPLAY 1 K153WF K123MF E7 F80345U50HBP ESCUTCHEON BASE 1 K103WF BPQ E7 F80345U50HEP ESCUTCHEON BASE 1 K103WF EPG E8 F60015U50BP TIMER 1 K103WF E9 F80205U30HXN TIMER KNOB 1 K103WF E10 F80205V00HXN TIMER KNOB 1 K103WF E11 F603L5G50EP INRUSH CURRENT SUPPRESSION 1 K103WF E12 F00075U60HBP NAME PLATE 1 K153WF BPQ E12 F00075U60HEP NAME PL...

Страница 15: ...1025U60HBP PACKING CASE PAPER 1 K153WF P2 F01025U60SBP PACKING CASE PAPER 1 K123MF P2 F01025U50HBP PACKING CASE PAPER 1 K103WF P3 F01045G10XN UPPER FILLER 1 P4 F01055G10XN LOWER FILLER 1 P5 F01065M00BP P E BAG 1 P6 F01075G10XN DOOR SHEET 1 P7 A06015G10XN COOKING TRAY 1 P8 F01924T00AP SHEET 1 P10 F01085G50XN TRAY PACKING 1 P11 F060V5G50XN OVEN RACK 1 P12 F01695M70BP SERVICE CENTER LIST 1 11 DIGITAL...

Страница 16: ...16 ...

Страница 17: ...12 DIGITAL PROGRAMMER CIRCUIT NN K153WF K123MF PARTS LIST 17 ...

Страница 18: ... AESA14EKE CHIP DIGI TRANSISTOR 1 R211 AERJ06J102R CHIP RESISTOR 1 1K 1 16W 5 R226 AERJ06J103R CHIP RESISTOR 1 10K 1 16W 5 R221 R228 R229 R350 R351 AERJ06J104R CHIP RESISTOR 5 100K 1 16W 5 R40 R41 R42 R43 R44 R45 R46 R47 AERJ06J154R CHIP RESISTOR 8 150K 1 16W 5 R320 R352 AERJ06J220R CHIP RESISTOR 2 22 1 16W 5 R220 R222 R223 AERJ06J222R CHIP RESISTOR 3 2 2K 1 16W 5 R210 AERJ06J332R CHIP RESISTOR 1 ...

Страница 19: ...2WF NN K102WF BPQ U K EPG Germany France Italy Finland Spain Portugal Greece Poland Holland WPG Switzerland SPECIFICATIONS 2002 Shanghai Matsushita Microwave Oven Co Ltd All rights reserved Unauthorized copying and distribution is a violation of 1 ...

Страница 20: ...law 2 ...

Страница 21: ...3 ...

Страница 22: ...N K102WF NN K152WF FEATURE Three Stage Cooking O Chaos Defrost O Auto Cook O Grill O O Combination O O Digital Clock O Child Safety Lock O Timer O Variable Power Control O 2 CONTROL PANEL 3 OPERATION AND DIGITAL PROGRAMMER 4 ...

Страница 23: ...te 10min 1min 10sec pads 4 Press Timer Clock pad TOD has now been resistered into the digital programmer circuit and will count up by minutes 3 2 Chaos defrost OPERATION SCROLL DISPLAY 1 Press Chaos Defrost Pad once to select Bread 2 Set the weight for 100g by pressing pad 3 Press Start pad 4 Press Stop Reset Pad twice Oven shuts off Time of day or colon if set appears in the display 5 ...

Страница 24: ...rt pad When cooking time has elapsed Oven beeps 5 times and shuts off Time of day or colon if set appears in the display 3 4 Grill OPERATION SCROLL DISPLAY 1 Press Grill pad twice 2 Set for 1 minute 3 Press Start pad When 2nd stage cooking time has elapsed Oven beeps 5 times and shuts off Time of day or colon if set appears in the display 6 ...

Страница 25: ...SPLAY 1 Press Start pad 3 times continuously Child appears in the display 3 6 To reset child lock OPERATION SCROLL DISPLAY 1 Press Stop Reset pad 3 times continuously Time of day or colon if set appears in the display 4 SCHEMATIC DIAGRAM NN K102WF 7 ...

Страница 26: ...5 SCHEMATIC DIAGRAM NN K152WF 8 ...

Страница 27: ... at any power selection except for High power position The digital programmer circuit controls the ON OFF time of power relay B contacts in order to vary the output power of the microwave oven from Low to High power One complete ON and OFF cycle of power relay B is 22 seconds The relation between indications on the control panel and the output of the microwave oven is as shown in table NOTE 9 ...

Страница 28: ...level One complete cycle of the vari power controller is 30 senconds in which the vari power switch is turned ON or OFF by the cam rotation in the 30 2 second period By controlling the timing of the vari power switch ON period the 230 240V AC supplied to the high voltage transformer is interrupted intermittently so that the average output power of the microwave oven is varied Table shows the timin...

Страница 29: ...er appliances the microwave oven is high voltage high current equipment Though it is free from danger in ordinary use extreme care should be taken during repair CAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron 7 1 Check the grounding Do not operate on a 2 wire extension cord The microwave oven is designed to be used when grounded It is imperative ...

Страница 30: ...ng with your hand nor with an insulated tool during operation 7 3 When parts must be replaced remove the power plug from the outlet 7 4 When the 8 Amp fuse is blown due to the operation of short switch WARNING When the 8 Amp fuse is blown due to the operation of short switch you must replace Primary latch switch and short switch Also replace power relay B RY1 when the continulty check reads shorte...

Страница 31: ...e not properly tightened 2 Make sure that all electrical connections are tight before inserting the plug into the wall outlet 3 Check for microwave energy leakage CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY IMPORTANT NOTICE 1 The following components have potentials above 2000V while the appliance is operate...

Страница 32: ...tron filament terminals 5 Remove 2 screws holding the magnetron NOTE After replacing the magnetron tighten mounting screws properly making sure there is no gap between the waveguide and the magnetron to prevent microwave leakage CAUTION When replacing the magnetron be sure the antenna gasket is in place CAUTION When connecting 2 filament lead wires to the magnetron terminals be sure to connect the...

Страница 33: ...ctor 6 Separate display holder from tabs on the escutcheon base and remove display holder 7 Remove display To replace membrane key board 8 Push the upper part of key board display window portion from back of escutcheon base and peel off escutcheon sheet and membrane key board completely from escutcheon base NOTE 1 The membrane key board is attached to the escutcheon base with double faced adhesive...

Страница 34: ...up on your body before handling the DPC A Using solder wick or a desoldering tool and 30W soldering iron carefully remove all solder from the terminal pins of the low voltage transformer and or power relays NOTE Do not use a soldering iron or desoldering tool of more than 30 watts on DPC contacts B With all the terminal pins cleaned and separated from DPC contacts remove the defective transformer ...

Страница 35: ...Remove two knobs from timer shaft NOTE Knobs can not be removed from front Do not try to remove knobs with fully assembled oven 8 5 Fan motor 1 Disconnect 2 lead wires from fan motor terminals 2 Remove 2 screws holding fan motor and orifice assy and detach the fan motor from oven assy 3 Remove fan blade from the motor shaft by pulling it straight out 8 6 Door assembly 17 ...

Страница 36: ...approximately 10 Note The door cannot be removed if the opening angle is greater than 10 6 Remove the door E from its hinges by pushing the door E upward and out 7 Replace other components NOTE Door alignment is crucial If door is misaligned apply pressure until alignment is achieved NOTE After replacement of the defective component parts of the door reassemble install and perform microwave leakag...

Страница 37: ...le motor 3 Remove the turntable motor by removing 2 screw NOTE After reinstalling the new turntable motor and reconnecting the 2 lead wires reinstall the motor cover by rotating it around 180 tucking the 2 tabs under the base into the 2 provided slots then screw the single tab to the base using a screw 8 8 Quartz heater 1 Disconnect lead wires from heater terminals 2 Remove 1 screw holding heater ...

Страница 38: ...always unplug the oven from its power source and discharge the high voltage capacitor 9 1 Primary latch switch secondary secondary latch switch and power relay B interlocks 1 Unplug the lead connectors to Power Relay B and verify continuity of the power relay B 1 2 terminals 2 Unplug lead connectors to primary Latch switch and Secondary Latch Switch 3 Test the continuity of switches at door opened...

Страница 39: ...ings should be as follows 9 3 High voltage transformer 1 Remove connectors from the transformer terminals and check continuity 2 Normal cold resistance readings should be as follows Secondary winding Approx 80 120 Filament winding Approx 0 Primary winding Approx 0 3 9 4 High voltage capacitor 1 Check continuity of capacitor with meter on highest OHM scale 2 A normal capacitor will show continuity ...

Страница 40: ...ould indicate one ohm or less 3 A continuity check between each filament terminal and magnetron case should read open 9 6 Diode 1 Isolate the diode from the circuit by disconnecting the leads 2 With the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage ba...

Страница 41: ...ower switch from the circuit by disconnecting 2 leads In order to check if variable power controller is operating normally follow the test procedures below 1 Select any power other than High and start the oven 2 Check continuity between both terminals of the variable power switch 3 Variable power controller timer and variable power switch is working property it the ohm meter reads open and 0 ohm w...

Страница 42: ... the direction of arrow in the illustration so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the door hook assembly to the oven assembly 3 Reconnect the short switch and check the coninuity of the monitor circuit and all latch swi...

Страница 43: ...g for trouble 2 Be careful of high voltage circuit 3 Discharge high voltage capacitor 4 When checking the continuity of the switches or the high voltage transformer disconnect one lead from these parts and then check continuity with the AC plug removed To do otherwise may result reading or damage to your meter When disconnecting a plastic connector from a terminal you must the plastic connector in...

Страница 44: ...find the exact cause of any trouble 11 1 Digital programmer circuit troubleshooting guide 26 ...

Страница 45: ...11 2 How to check the semiconductors using an OHM meter 12 EXPLODED VIEW AND PARTS LIST 27 ...

Страница 46: ... in this part list Do not use description of the part 2 Important safety notice Components identified by mark have special characteristics important for safety When replacing any of these components use only manufacture s specified parts NOTE Please order all parts from MELUK in U K 28 ...

Страница 47: ...J61414T00AP MICRO SWITCH 1 K152WF SECONDARY LATCH SWITCH D3V 16G 3C25 18 F61455G10XN THERMAL CUTOUT 1 K102WF 19 J61784T00AP MICRO SWITCH 1 SHORT SWITCH D3V 1G 2C25 20 2M210 M1G MAGNETRON 1 21 F60905G10XN H V CAPACITOR 1 1 0 F 23 F621B5G10MN H V TRANSFORMER 1 24 F62025G10XN DIODE 1 25 F606V5G10XN PROTECTOR DIODE U 1 26 ANE6230Z70BP FUSE 1 8A 250V 28 F63265G10XN TURNTABLE MOTOR 1 29 F900C5G50BP AC C...

Страница 48: ...SHION RUBBER C 1 45 F0922000EF CUSHION RUBBER C 1 14 DOOR ASSEMBLY Ref No Part No Part Name Description Pcs Set Remarks D1 F30185G10XN DOOR KEY A 1 D2 F30015G10HMN DOOR A 1 D3 F302K5G10XN DOOR E U 1 D4 F30215G10XN DOOR KEY SPRING 1 D5 F30855G10XN DOOR C 1 D6 F31455G10XN DOOR SCREEN A 1 D7 F31465G10XN DOOR SCREEN B 1 15 ESCUTCHEON BASE ASSEMBLY 30 ...

Страница 49: ...G WPG E3 F80345G40HHN ESCUTCHEON BASE 1 K152WF E4 F66174T00AP DISPLAY TUBE COVER 1 K152WF E5 A67004T00AP RUBBER CONNECTOR 1 K152WF E6 AEDDHJ5G60XN DISPLAY 1 K152WF E7 F80345G50HBP ESCUTCHEON BASE 1 K102WF BPQ E7 F80345G50HEP ESCUTCHEON BASE 1 K102WF EPG E8 F60015G50XN TIMER 1 K102WF E9 F80205G10HMN TIMER KNOB 2 K102WF E10 JQX 13FA24D POWER RELAY 1 K102WF E11 F603L5G50EP INRUSH CURRENT SUPPRESSION ...

Страница 50: ...G60WP INSTRUCTION MANUAL 1 WPG P2 F01025G60HBP PACKING CASE PAPER 1 K152WF BPQ EPG P2 F01025G60HWP PACKING CASE PAPER 1 K152WF WPG P2 F01025G50HBP PACKING CASE PAPER 1 K102WF BPQ EPG P3 F01045G40XN UPPER FILLER 1 P4 F01055G40XN LOWER FILLER 1 P5 F01068100XN P E BAG 1 P6 F01075G10XN DOOR SHEET 1 P7 A06015G10XN COOKING TRAY 1 P8 A01924T00AP SHEET 1 P10 F01085G50XN TRAY PACKING 1 P11 F060V5G50XN OVEN...

Страница 51: ...33 ...

Страница 52: ...19 DIGITAL PROGRAMMER CIRCUIT PARTS LIST 34 ...

Страница 53: ...26 AESA14EKE CHIP DIGI TRANSISTOR 1 R211 AERJ06J102R CHIP RESISTOR 1 1K 1 16W 5 R226 AERJ06J103R CHIP RESISTOR 1 10K 1 16W 5 R221 R228 R229 R350 R351 AERJ06J104R CHIP RESISTOR 5 100K 1 16W 5 R40 R47 AERJ06J154R CHIP RESISTOR 8 150K 1 16W 5 R320 R352 AERJ06J220R CHIP RESISTOR 2 22 1 16W 5 R220 R222 R223 AERJ06J222R CHIP RESISTOR 3 2 2K 1 16W 5 R210 AERJ06J332R CHIP RESISTOR 1 3 3K 1 16W 5 R440 C440...

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