Panasonic NN-V629MB Service Manual Download Page 30 | Manualshive

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16. DIGITAL PROGRAMMER CIRCUIT

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Summary of Contents for NN-V629MB

Page 1: ...B Specifications Power Source 240 V AC Single Phase 50 Hz Power Requirements Microwave 1280W Grill 1360W Maximum 2580W Output IEC705 88 900W Microwave Frequency 2 450Mhz Timer 99 min 99 sec Oven Cavity Size 27L Outside Dimensions 510mm W X 380mm D X 304mm H Inside Dimensions 359mm W X 352mm D X 217mm H Weight 13 Kg Inverter Power Supply Output power IEC705 88 Test procedure Specifications subject ...

Page 2: ...ery high voltage may remain in the circuitry even when the oven is off High voltages may remain in the capacitors on the board DO NOT 1 Do not touch the circuitry as it becomes very hot high voltage Even when replacing board extreme care should be taken to avoid possible electric shock High voltage may remain in the circuit 2 Do not touch aluminium heat sink because it is very hot in high voltage ...

Page 3: ...y 15 6 7 Turntable motor 15 6 8 Quartz heater 15 6 9 Steam Sensor NN V689WB 16 7 COMPONENT TEST PROCEDURE 17 7 1 Primary Latch Switch Secondary Secondary Latch Switch and Power Relay B Interlocks 17 7 2 Short Switch Monitor Circuit 17 7 3 Magnetron 17 7 4 Push button key board 17 7 5 Inverter Power Supply U 18 7 6 Inverter Power supply U 18 7 7 Steam Sensor and digital programmer circuit 18 8 MEAS...

Page 4: ...lay a cooking program for up to 9 hrs 99 mins or used to time or for standing non cooking time 10 Clock Pad Press the clock pad Using the minute and second pads set the clock 12 hr clock Press clock pad again to stop colons flashing 11 lb oz Conversion Pad 12 Weight Selection Pads 13 Stop Cancel Pad Before Cooking One press clears your instructions During Cooking One press temporarily stops the co...

Page 5: ...LAY 1 Place water load in oven 2 Press Micro Power once to set High Power HIGH SET TIME 3 Set time at 5 sec by pressing 1 sec pad 5 times 4 Press Micro Power pad 3 times to set Medium Power 5 Set for 1 minute by pressing 1min pad once Once Once Twice 5 Times 11 PRESS CLOCK 25 5 Times 5 SEC PRESS START HIGH SET TIME MEDIUM Once PRESS START MIN SEC 1 00 MEDIUM 6 Press start pad 7 When 1st stage cook...

Page 6: ...ILL 1 SET TIME 2 Set cooking time GRILL 1 PRESS START 3 Press start H 1 00 PRESS START MIN SEC 1 00 MIN SEC 1 00 H 1 00 CHOOSE COOKING MODE 1H 00 MIN SEC 1 00 MIN SEC 1 00 OPERATION DISPLAY 1 Press combination COMBINATION SELECT GRILL LEVEL 2 Press stand GRILL 1 SELECT MICROPOWER 3 Select micropower low LOW SET TIME 4 Set cooking time PRESS START 5 Press start OPERATION DISPLAY 1 Select auto weigh...

Page 7: ...t auto sensor program STEAMED PUDDING PRESS START 2 Press start STEAMED PUDDING OPERATION DISPLAY 1 Press start 3 times to display lock LOCK OPERATION DISPLAY 1 Press stop cancel 3 times Time of day or colon appears in display 11 25 OPERATION DISPLAY 1 Press clock pad 3 times DEMONSTRATION MODE PRESS ANY KEY OPERATION DISPLAY 1 Press clock pad 3 times 11 25 ...

Page 8: ...ector housing PRIMARY LATCH SWITCH TOP SECONDARY LATCH SWITCH BOTTOM OUTSIDE SHORT SWITCH BOTTOM INSIDE MAGNETRON HIGH VOLTAGE INVERTER POWER RELAY RY1 POWER RELAY RY4 SYMBOL COLOUR OR ORANGE BL BLUE BR BROWN W WHITE Y YELLOW R RED GR GREY BK BLACK CL CLEAR CAUTION HEAT SINK HOT LIVE VERY HIGH VOLTAGE TEMPERATURE PIEZO SENSOR NN V689 ONLY ...

Page 9: ...ed and Start pad is pressed 1 The digital programmer circuit determines the power level and cooking time to complete cooking and indicates the operating state in the display The table shows the corresponding cooking times for respective weight by categories 2 When cooking time in the display window has elapsed the oven turns off automatically by the controlled signal from the digital programmer ci...

Page 10: ... is subtracted from the T1 time In other words the T1 time starts at the end of the 10 second period 2 T1 Time The total amount of time it takes the microwave oven to switch to T2 time after the 10 second period 3 T2 Time When the steam escapes from the cooking container placed in the oven the steam sensor detects it and the microprocessor calcuates the balance of the cooking time This T2 time is ...

Page 11: ...ounding bracket to the chassis ground otherwise this H V Inverter circuit board will expose very high voltage and cause extreme DANGER Be sure to have proper grounding by the grounding plate and screws NEW H V HIGH VOLTAGE REMAINS IN HIGH VOLTAGE CAPACITORS DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE HOT LIVE OF HEAT SINK HEAT SINK CHOKE COIL SAND BAR RESISTOR CUSTOM I C CN 701 CURRENT TRANSFORMER...

Page 12: ...ightened 2 Make sure that all electrical connections are tight before inserting the plug into the wall outlet 3 Check for microwave energy leakage Refer to procedure for measuring microwave energy leakage WARNING When the 10A 250V fuse is blown due to the operation of short switch you must replace Primary latch switch and short switch Also replace power relay 1 RY1 when the continuity check reads ...

Page 13: ... base from the oven 5 Remove 1 screw to disconnect earth wire to magnetron 6 Remove 4 screws holding inverter power supply board to the Inverter bracket 7 Replace with replacement PCB and follow the steps in reverse CAUTIONS WHILE REPLACING INVERTER POWER SUPPLY U 1 Make sure to leave grounding plate in its place 2 Make sure to securely tighten grounding screw through the side of chassis base 3 Se...

Page 14: ...sure the escutcheon sheet is earthed to the backplate via the earth strip 6 4 Low voltage transformer and or power relays RY1 NOTE Be sure to ground any static electric charge built up on your body before handling the DPC 1 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...

Page 15: ... has no play between the inner door surface and oven front surface If the door assembly is not mounted properly microwave power may leak from the clearance between the door and oven 3 Perform the microwave leakage test 6 7 Turntable motor 1 Remove the motor cover by breaking off at the 8 spots indicated by arrows See Figure NOTE After breaking off the motor cover make sure that cut off portions ar...

Page 16: ...om steam sensor unit 4 Remove catch hooks on sensor mounting plate and air guide 5 Remove steam sensor from sensor mounting plate NOTE When installing the steam sensor make sure that the direction of the steam sensor is as shown in figure SENSOR MOUNTING PLATE EXHAUST GUIDE AIR GUIDE HOOK HOOK SENSOR MOUNTING PLATE METAL SURFACE OF LEAD WIRE WHITE SURFACE SURFACE ...

Page 17: ...n 1 Isolate magnetron from the circuit by disconnecting the leads 2 A continuity check across magnetron filament terminals should indicate one ohm or less 3 A continuity check between each filament terminal and magnetron case should read open 7 4 Push button key board Check continuity between switch terminals by tapping an appropriate pad on the key board The contacts assignment of the respective ...

Page 18: ...cally switches to remaining time cooking T2 6 The remaining cooking time T2 appears in the display window If the following cooking times appear Steam Sensor function is normal HEAT SINK CHOKE COIL SAND BAR CUSTOM I C PHOTO COUPLER CN 701 CURRENT TRANSFORMER FILM CAPACITORS PRIMARY WINDINGS SECONDARY WINDINGS HIGH VOLTAGE DIODES CN 703 HIGH VOLTAGE CAPACITORS INVERTER POWER SUPPLY DIAGRAM RECTIFIER...

Page 19: ...ded to test the magnetron using the simple method outlined below Necessary Equipment 1 litre 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 accurate as possible 1 Fill the beaker with exactly one litre of tap water Stir the water using the thermometer and record t...

Page 20: ...efective DPC AU or DPC DU 2 No display and no operation at all Fuse is blown 1 Shorted lead wire harness 2 Defective primary latch switch NOTE 1 3 Defective short switch NOTE 1 4 Defective Inverter power supply U Refer to component test procedure Page 17 Check adjustment of primary secondary latch switch and short switch including door NOTE 1 All of these switches must be replaced at the same time...

Page 21: ...CTIONS NEW H V CLOCK DELAY STAND START HIGH POWER DISPLAY 4N30BPQ DISPLAY 4N50BPQ NN V689WB H97 H98 appears in the Check magnetron filament OK Check Inverter input AC AC 240V Check Inverter control signal Approx AC 3V refer to component unplug CN702 and measure unplug CN701 and measure Open 0V 0V DANGER Magnetron DPC board Power Relay Loose relay wiring Latch switch DPC board H V Inverter U NOTE D...

Page 22: ...re than 0 5A refer to component less than 0 4A Open DANGER Magnetron DPC board Power Delay Loose wiring Latch switch DO NOT try to REPAIR this Inverter Power Supply U display window pares measure at oven plug continuity test procedures HIGH VOLTAGE and also DO NOT RE ADJUST PRESET VOLUME on the board It is very dangerous to repair or adjust without sufficient test equipment because this circuit ha...

Page 23: ...ven though the program has been set and the start pad is tapped 1 IC 1 pin 11 voltage while operation Abnormal IC 1 Normal 5V Step 2 2 Short circuit between pin 6 and pin 16 of IC 2 Still not turn on RY 2 RY 2 turns on IC 220 No microwave oscillation at any power set ting 1 IC 1 pin 7 and 72 voltages while operation at high power Abnormal IC 1 Normal 7 5V 72 5V Step 2 2 Q220 transistor Abnormal Q2...

Page 24: ...24 10 EXPLODED VIEW AND PARTS LIST 1 2 3 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 37 38 39 40 41 38 42 43 4 4 5 6 46 44 45 36 47 48 ...

Page 25: ...20 E610T6700BP OVEN LAMP 1 21 E20994N30BP BRACKET A 1 22 E40254N30BP AIR GUIDE A 1 23 E66014L00GS INVERTER EARTH BRACKET 1 24 E65854L00GS INVERTER SUPPORT BRACKET 1 25 E606Y4N10GP INVERTER 1 26 E10014N30BP BASE PLATE 1 27 E10614L00GS WATER SHIELD 1 28 E1008 1180 RUBBER FOOT 1 29 E110D4N30HGP OUTER PANEL 1 NN V689WB NN V659WB 29 E110D4N30GP OUTER PANEL 1 NN V659CB 29 E110D4N30NGP OUTER PANEL 1 NN V...

Page 26: ...Remarks D1 E302A4N30HBP DOOR A SCREEN B ASSY 1 NN V689WB NN V659WB D1 E302A4N30BP DOOR A SCREEN B ASSY 1 NN V659CB D1 E302A4N30NBP DOOR A SCREEN B ASSY 1 NN V629MB D1 E302A4N30ZBP DOOR A SCREEN B ASSY 1 NN V659FB D2 E30214000AP DOOR KEY SPRING 1 D3 E30184L00GS DOOR KEY A 1 D4 E302K4N30BP DOOR E UNIT 1 D5 E30854N30BP DOOR C 1 D6 E30064N30BP UPPER HINGE 1 D1 D2 D3 D4 D5 D6 ...

Page 27: ... BASE 1 NN V659CB E3 E80344L10NBP ESCUTCHEON BASE 1 NN V629MB E3 E80344L10ZBP ESCUTCHEON BASE 1 NN V659FB E4 E81274L10BP ESCUTCHEON BACK PLATE 1 E5 E603L4N50BP DPC AU 1 NN V689WB E5 E603L4N30BP DPC AU 1 NN V659WB NN V659CB NN V629MB NN V659FB E6 E66164L00GS RIBBON CABLE 1 E7 E82564L10BP DOOR OPENING LEVER 1 E8 E603Y4N50BP DPC DU 1 NN V689WB E8 E603Y4L20BP DPC DU 1 NN V659WB NN V659CB NN V629MB NN ...

Page 28: ...RTON BOX 1 NN V689WB P6 E01024N30HBP CARTON BOX 1 NN V659WB P6 E01024N30BP CARTON BOX 1 NN V659CB P6 E01024N30NBP CARTON BOX 1 NN V629MB P6 E01024N30ZBP CARTON BOX 1 NN V659FB P7 E01054N30BP LOWER FILLER 1 P8 E01084N30BP TRAY PACKING 1 P9 E060V6520BP WIRE RACK 1 P10 E06435870SP WIRE RACK FOOT 3 P11 E01066750BP VINYL COVER 1 P12 E01076700BP DOOR SHEET 1 P13 E01926430GP PROTECTOR SHEET 1 P14 E01044N...

Page 29: ...Set Side Strip Ref No 2 Pcs Set Microwave Oven Model No NN TKV69W E1603A510HBP 2 E1601A510HBP 2 NN V689WB NN V659WB NN TKV69C E1603A510BP 2 E1601A510BP 2 NN V659CB NN TKV69M E1603A510NBP 2 E1601A510NBP 2 NN V629MB NN TKV69F E1603A510ZBP 2 E1601A510ZBP 2 NN V659FB TRIMKIT ASSY INSTRUCTION E0003A4N30BP Exploded View ...

Page 30: ...30 16 DIGITAL PROGRAMMER CIRCUIT ...

Page 31: ...31 ...

Page 32: ... CHIP RESISTOR 9 68KΩ Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PIN CONNECTOR 1 CN1 AEEMMD05507W 7 PIN CONNECTOR 1 RY1 RY4 AEGG5G1A12 RELAY 2 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 D2 D3 ERZV10D112C1 VARISTOR 2 1C25 AEICP25011HL PHOTOCOUPLER 1 D26 AESTS1WBA60B DIODE BRIDGE 1 BZ310 EFBAH20C001 BUZZER 1 2KHz IC10 ETXMJ197X1BG SWITCH POWER SUPPLY 1 CN3 AEEMMF0...

Page 33: ...3V CHIP RESISTOR 9 68KΩ Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PIN CONNECTOR 1 CN1 AEEMMD05507W 7 PIN CONNECTOR 1 RY1 RY4 AEGG5G1A12 RELAY 2 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 D2 D3 ERZV10D112C1 VARISTOR 2 1C25 AEICP25011HL PHOTOCOUPLER 1 D26 AESTS1WBA60B DIODE BRIDGE 1 BZ310 EFBAH20C001 BUZZER 1 2KHz IC10 ETXMJ197X1BG SWITCH POWER SUPPLY 1 CN3 AEEMM...

Page 34: ...r Assembly Ref No Part No Description Qty Remarks R1 ERG1SJ753P RESISTOR 1 75KΩ 1W C1 C2 QETJ5225KRP2CE CAPACITOR 2 2 2µf C3 C4 ECKMNA472ME CAPACITOR 2 4700pF 250V AC L1 SC 08 E203A INDUCTOR 1 2 4mH F1 E62316010BP FUSE HOLDER 2 ...

Page 35: ...35 NOTES ...

Page 36: ...36 NOTES SM K PEN Printed in the UK S 4N30BP S 4N50BP ...

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