Service Manual - Page de test
Contents
1. 19 TROUBLESHOOTING GUIDE 20 EXPLODED VIEW AND PARTS LIST ten RC cue 24 PARTS LISTS 25 piole Wtcc afM S 26 ESCUT CHEON BASE ASSEMBLY c dienean ideaan satesdecesueserensectzicetdetevencesoevecensectedtcasceveesneencdetuensers 27 PACKING AND ACCESSORIES eene hapa cbe daaa iaei 28 TRIM KIT PARTS LIS Ue ect 29 DIGITAL PROGRAMMER CIRCUIT 30 DIGITAL PROGRAMMER CIRCUIT PARTS LIST 32 FEATURE CHART FEATURES NN V659 NN V629 NN V689 Microwave 6 6 Grill 3 3 Combination 3x3 3x3 Weight Defrost 3 3 Weight Combination 10 Stage Cooking 3 stage 3 stage Delay Stand Yes Yes Clock 12 Hrs 12 Hrs Word Prompt English English Weight Reheat 2 Weight 2 Sensor Reheat 2 Sensor Cook 6 Sensor Combination 6 1 CONTROL PANELS NN V659 NN V629 NN V689 Display Window Time Pads Auto Wei2. DANGER HIGH VOLTAGE AREA MAGNETRON 08 125M H V INVERTER U INVERTER SUPPORT BRACKET PULL HOW TO DISCONNECT SPECIAL LOCK CONNECTOR PRESS THIS LEVER LOCKING LEVER 05 007M 6 3 Digital Programmer Circuit DPC and membrane key board NOTE Be sure to ground any static electric charge built up on your body before handling the DPC 1 Disconnect all connectors from D P C 2 Remove 2 screws holding escutcheon base and slide the escutcheon base upward slightly 3 Remove 1 screw holding earth wire to the chassis 4 Release flat cable 5 Remove 6 screws holding DPC DU 6 Remove door lever 7 Remove 6 screws holding DPC AU To replace membrane key board 8 Remove escutcheon bracket from escutcheon base by freeing 4 catch hooks on the escutcheon base 9 Remove display window 10 Remove membrane assembly by pushing away from base NOTE 1 The membrane key board is attached to the escutcheon base with double faced adhesive tape Therefore applying hot air such as using a hair dryer is recommended for smoother removal 2 When installing new membrane key board make sure that the surface of escutcheon base is cleaned sufficiently so that any problems shorted contacts or uneven surface can be avoided 3 When replacing the silver escutcheon sheet NN V629MB ensure the escutcheon sheet is earthed to the backplate via the ea
3. L Eas 15 6 9 Steam Sensor 689 16 COMPONENT TEST PROCEDURE tis ccsicccsccsvssssecseccisconeicassssacssosetsiecsesvsesenteccsoceeseseresbescantserccusdncterteserserssscrsssecveses 17 7 1 Primary Latch Switch Secondary Secondary Latch Switch and Power Relay B Interlocks 17 7 2 Short Switch amp Monitor Circuit 22 22222 2 2 17 YA M nero RR 17 7 4 Push b tton koy board ertet rear e inne e Fe i 17 Ao Inverter Power Supplys s aset eer e ete d eden E Ee ie te e ee ether 18 7 6 lnverter Power supply U rtr tnra e cnet PIX E ge ha ena tr nee ESAS a e aa Eia 18 7 7 Steam Sensor and digital programmer 2 18 MEASUREMENTS AND 2 1 1 1 1 1 1 nns nnns inns tnn sins tnis tns s tutis atn nnne 19 8 1 Installation of Primary latch switch Secondary latch switch and Short 19 8 2 Measurement of microwave
4. D5 D ac D2 D1 Ref No Part No Part Name amp Description Pcs Set 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 G 1 D6 E30064N30BP UPPER HINGE 1 NOTE When ordering any door component also order door C as this part may become damaged during disassembly 26 13 ESCUTCHEON BASE ASSEMBLY Ref No Part No Part Name amp Description Pcs Set Remarks E1 E80724L10HBP DOOR OPENING BUTTON 1 NN V689WB NN V659WB E1 E80724L10BP DOOR OPENING BUTTON 1 NN V659CB E1 E80724L10NBP DOOR OPENING BUTTON 1 NN V629MB E1 E80724L10ZBP DOOR OPENING BUTTON 1 NN V659FB E2 E80378A0AG DOOR OPENING BUTTON SPRING 1 E3 E80344L10HBP ESCUTCHEON BASE 1 NN V689WB NN V659WB E80344L10BP ESCUTCHEON BASE 1 NN V659CB E80344L10NBP ESCUTCHEON BASE 1 NN V629MB 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
5. pn R343 10K C1 ZNC 18 19 20 sunt T SWABR 21 saat ennt T 22 SHAS vot SHES SW6O0 u 23 a SNAM SW51 SW57 SW61 24 M A ones SW52 SW58 SWAG 5 62 wW 25 041 2 29 68K_C41 68K_C1 68K_C4 68K_C41 68K_C41 68K_C1 68K C1 C4 C41 Ci 1N4 148M 10 68K_C41 10 103 C1 103 103 C1 103 C1 103 103 C1 4 RAT 4 A426 R434 _ 68K_C4 R44 R45e R46 B47 amp C40 41 42 C43 C44 45 46 30 31 32 10 1 107 sc 57 SEG7 _ TPG 56 55 SEGB SEGS 4 sSEG10 _g TPS 53 SEG11 5 012 51 5 613 12 50 49 SEG14 5 015 48 14 5616 TP15 47 SEG17 TP16 46 SEG18 45 44 43 42 40 32 17 1 TP19 TP20 5 619 SEG20 SEG24 C3A 27 DISP110 HLCAL2BP SEG22 41 5
6. 259 4 4 Autoweight defrost autoweight cook wd 4 5 Auto Sensor NN V689WB 222 2 0 00 000 10 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING eeeeeeeeeeneee nnne nnne nnn rnnt 11 5i Checkthe gro nding Detached et Ra ipie de dedo eode od 11 5 2 VEIT RAUS RENTRER DRITTER II I EET M 11 5 3 When parts must be replaced remove the power plug from the 2 12 5 4 When the 10A fuse is blown due to the operation of short 12 5 5 Avoid inserting nails wire etc through any holes in the unit during operation n2 5 6 Confirm after 12 DISASSEMBLY AND PARTS REPLACEMENT 0 nnn nnn nnns nnns 13 61 E 13 6 2 Inverter Power pe er ipe fente o dad 13 6 3 Digital Programmer Circuit DPC and membrane key board wee 14 6 4 Low voltage transformer and or power relays 14 6 5 dore 14 6 6 Doorzdisassembly DAI ee et ane oes gehen Se EE 15 6 7 Turntable motor 15 6 8 Quarz
7. SEG24 39 sEG25 _SEG25 SEG27 1 21 2 g 1P23 4 TP26 t 12v D180 TLGE260 0181 TLGE260 36 sEceB TP27 35 sEces 3 TP28 34 sEG30 29 25893 ee 33 sEG31 TP30 210 1010101000 gt gt gt gt gt gt P gt gt gt gt p gt p gt 64 TLI R182 360 D182 GE260 2 C110 R650 8 100K C1 cin 103 6 OV 4 jua 5mmPitch PCB AU PURPOSE Grill IC1MASK JPR1 JPR2 JPR3 SW40 47 53 63 48 50 5 40 42 44 63 Sw41 63 SW40 48 50 53 63 A485 USE R486 USE C460 33K C1 33K C1 31 SW47 554 B RESET START SW63 x HB HH HEH HH NN V689 S 4N5BP 60314 50 NN V659 S 4N3BP E603L4N30BP __ 17 DIGITAL PROGRAMMER CIRCUIT PARTS LIST DPC AU E603L4N50B P NN V689WB Ref No Part No Description Qty Remarks CN6 AEEM19FESVKN 19PIN CONNECTOR 1 DISP AEDDHLCAL2BP LCD 1 220 AN6747B CUSTOM IC 1 D180 D182 AESQTLGE260T G
8. o SE SECONDARY CN 701 WINDINGS CURRENT CURRENT HIGH VOLTAGE REMAINS IN cn 703 HIGH VOLTAGE CAPACITORS WARNING OF INVERTER POWER SUPPLY U GROUNDING Check the High Voltage Inverter Power Supply circuit grounding This High Voltage Inverter Power Supply circuit board must have a proper chassis ground by the grounding 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 11 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING H V INVERTER U BE SURE TO HAVE PROPER GROUNDING GROUNDING PLATE WARNING OF DISCHARGING HIGH VOLTAGE CAPACITORS Warning about the electric charge in the high voltage capacitors For about 30 seconds after the oven is turned off an electric charge remains in the high voltage capacitors in the inverter power supply circuit board When replacing or checking parts remove the power plug from the outlet and short the Inverter output terminal of the magnetron filament terminals to the chassis ground with an insulated handle screwdriver to discharge Please make sure to touch chassis ground side first then short to the output terminals Touch chassis side first then short to the terminal of the magnetron filament terminal MAGNETRON FILAMENT TERMINAL INSULAT
9. 34 NOTES 35 NOTES S AN30BP S 4N50BP Printed in the UK 36
10. C1 i 1 OV z nz i T Ave g 4 1 N BEN J0 oF S8 4 5 ros 0 08 2 TSV g ws Bl 34 14 a a aio 8 7 esw Ja 12v 42 254 E ese PA m2 4 1 o In 1 25 SJ a20 c20 de f 2 m PS250 4 d 8 104 CiT 4 ZS 1100VEX 5 6ES2 c 4 13 2 d 1 0 52 73 7 1100VEX puces ELDR35V 56 LEAD GND2 GND1 Ve et ae 6 4 5 r ONLY i e maeaea ECN20_3 E603L4NS0BP ONLY 1 R485 P36g 76 STEAM ONCE keas zeje 1 SENSOA 1 R486 4K_C4 n hook ct 3 t i 1 T a ee TP373 75 LLL LL LLL LL LEE A SI Igea ECN20 3B inn 1 INVEATER P C B Pseeot AP Zn TP3Bg 17 n UM C331 3 C T 681 x gaap i R330 i A F103 e TeS9 2 3 dh F n d B d 470 1 E D220 1N4148M i R460 i THERMISTER 33K C4 _ I j 1 3 461 1N4148M 1 1 K C1 ti gt z HOST I L ml pole m DOOR ds Ix q XM 218 g gt Ov SWITCH Edu S 18 S ti ir 1 1 i i RE i i SS a221 1 R220 1 27 2 224 s 6 6 amp z x K 1N4145M e TP41 H
11. E SMALL p B C SMALL C C E SS Transistor NPN Transistor COLLECTOR 280 B FORWARD REVERSE 2SD eil E B SMALL oo ECB E CB SMALL m EMITTER C E Bs PNP Transistor E 2SA B o FORWARD REVERSE 2SB C E B 10kQ 30kQ 10kQ 30kQ Digital Transistor ECB 50kKQ 90k0 PNP Transistor C E 40kQ 80kQ s Ml 23 10 EXPLODED VIEW AND PARTS LIST 22 11 PARTS LISTS NOTES When ordering replacement part s please use part number s shown in this parts list Do not use description of the part Important safety notice Components identified by mark have special characteristics important for safety When replacing any of these components use only manufacturer s specified parts Ref No Part No Part Name and Description Pcs set Remarks 1 E900C6520BP POWER SUPPLY CORD 1 2 AEE9108A20GN POWER CORD CLIP 1 3 E030A4N30BP LEAD WIRE HARNESS 1 4 AEE6230P10GN FUSE 16A 1 16A 5 E607X4N30BP NOISE FILTER 1 6 E67597550GP CERAMIC FUSE 10A 1 10A 7 E30208000BP DOOR HOOK 1 8 AEE6142 F61 PRIMARY LATCH SWITCH 1 V 15G 3C26 9 E61785180AP SHORT SWITCH 1 L 2C2 2 10 E61425180AP SECONDARY LATCH SWITCH 1 L 3C2 2 11 E31384830AP HOOK SPACER C 1 12 E31374830AP HOOK SPACER B 1 13 E414
12. E603Y4N50BP DPC DU 1 NN V689WB E8 E603Y4L20BP DPC DU 1 NN V659WB NN V659CB NN V629MB NN V659FB E9 E83264L10BP DISPLAY SHEET 1 E10 E90014N30BP EARTH STRIP 1 NN V629MB NOTE E11 E00074N30BP NAME PLATE 1 NOTE E12 E83374N50HBP ESCUTCHEON SHEET 1 NN V689WB E12 E83374N30HBP ESCUTCHEON SHEET 1 NN V659WB E12 E83374N30BP ESCUTCHEON SHEET 1 NN V659CB E12 E83374N30NBP ESCUTCHEON SHEET 1 NN V629MB E12 E83374N30ZBP ESCUTCHEON SHEET 1 NN V659FB NOTE Please order Escutcheon Base and Name Plate together NOTE When replacing the silver escutcheon sheet ensure it is earthed to the escutchion back plate via the earth strip 27 14 PACKING AND ACCESSORIES Ref No Part No Part Name amp Description Pcs Set Remarks P1 E06014N30BP GLASS TRAY 1 P2 E290D4N30BP ROLLER RING 1 P3 E00034N30BP OPERATING INSTRUCTIONS 1 P4 E01695750BP SERVICE CENTER LIST 1 P5 E01134N30BP TRAY STYROL 1 P6 E01024N50HBP CARTON 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 E01044N30BP UPPER FILLER 1 28 15 TRIM KIT PARTS
13. LIST Parts list for microwave oven trim kits Exploded View Trim Top and Bottom Pcs Set Side Strip Pcs Set Microwave Oven Model No Strip Ref No 1 Ref No 2 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 29 16 DIGITAL PROGRAMMER CIRCUIT We ate oe oe get ee ye ee ee caldi arco dli callidi Re CNS CNS 7 R 5 E D ECN17_195 ECN17 19R J603YALXOXX 1 CN 0 C21 1K C1 1 ECN20 7WOBBH EX AC DC 12V 103
14. T2 time in sec T1 time x K factor NOTE Remember the T1 time starts after the 10 second period The coefficient K is programmed into the microprocessor memory and they are listed in the following table along with P1 and P2 powers NOTE When More or Less pad is selected the factor varies resulting in T2 time to be increased or decreased Example of calculating T2 time Example 1 If the T1 time is measured to be 2 minutes and 40 seconds after the 10 second period and the Auto program selected is Fish T22 T1 xK 2 min and 40 sec x 0 1 160 sec x 0 1 16 sec 10 AUTO SENSOR COOKING REHEAT PROCESS MAGNETRON STEAM START ON DETECTED Y v v 1 1 T1 1 40SEC TIME lap 1 2 POWER POWER AUTO SENSOR COOK CATEGORY P1 POWER P2 POWER K FACTOR FRESH VEG HIGH HIGH 0 3 FROZEN VEG HIGH HIGH 0 1 FRESH FISH HIGH HIGH 0 1 FROZEN FISH HIGH HIGH 0 1 AUTO SENSOR COOK COMBINATION CATEGORY P1 POWER P2 POWER P3 POWER JACKET MICRO GRILL MICRO K GRILL COOK POTATOES FACTOR TIME HIGH MED 1 1 120s 5 Unlike many other 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 1 Do not
15. This product should be serviced only by trained qualified personnel This service manual covers products for following markets When troubleshooting or replacing parts please refer to the country identifications shown below for your applicable product specification BPQ for the United Kingdom DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE HOT LIVE OF THE INVERTER POWER SUPPLY U INVERTER WARNING This Inverter board looks like a regular PCB however this PCB drives the magnetron tube with extremely high voltage and high current ITHAS 1 Very high voltage and high current circuit It functions the same as the high voltage transformer and high voltage capacitor in ordinary microwave ovens 2 aluminium heat sink is very hot 3 Very 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 and also very hot in high heat energy 8 Do not try to repair the Inverter PCB as this can be very dangerous Replace the whole High Voltage Inverter Circuit U unit and return fully re packed with the original shopping box and shipping materials 4 Do not try to adjust or tamper with the preset volume on
16. and cause microwave leakage 12 5 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 Microwaves might leak if screws are not properly tightened Make sure that all electrical connections are tight before inserting the plug into the wall outlet Check for microwave energy leakage Refer to procedure for measuring microwave energy leakage CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OTHER PARTS CONDUCTING MICROWAVE ENERGY IMPORTANT NOTICE NEW H V 1 The following components have potentials above 250V while the appliance is operated Magnetron High voltage transformer Located on Inverter U High voltage diodes Located on Inverter U High voltage capacitors Located on Inverter U Pay special attention on these areas When the appliance is operated with the door hinges or magnetron is fixed incorrectly the microwave leakage can reach more than 5mW cm After repair or exchange it is very important to check if the magnetron and the door hinges are correctly fixed DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 6 6 1 Magnetron Discharge the high voltage capacitors Remove 1 screw holding the air guide A Remove 2 screws holding the tie bar the Air guide 5 Remove the Air Guide A 6 Disconnect the 2 high voltage lead wires from th
17. latch switch Secondary latch switch and short switch to the door hook is necessary When mounting the door hook assembly to the oven assembly adjust the door hook assembly by moving it in 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 Reconnect the short switch primary amp secondary latch switches and check the continuity of the monitor circuit and all latch switches again by following the components test procedures 8 2 Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures However due to the complexity of IEC test procedures it is recommended 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 Fill the beaker with exactly one litre of tap water Stir the water using the thermometer and record the beaker s temperature recorded as T1 Place the beaker on the center of glass cook plate Stir the water again and read the temperature of the beaker r
18. 0 240V 50Hz P O m YIG 1 H 4700pF 22uF 75K U f056 2 2uF RY4 o 4700pF CHASSIS GROUND 2 0mH um Mr FAN MOTOR CN1 INVERTER PC B DS 3 1 br DIODE Ay 4 ji Swa RY4 oTo Gat oTo 1 TL Rv2 RY3 VARISTOR POWER RELAY CN5 PC B DU CN2 0 2 PIEZO SENSOR NN V689 ONLY L OVENLAMP CN3 MOE MT TURN TABLE MOTOR HEATER NOTE When replacing check the lead colour as shown Colours shown by indicate colours of leadwire connector housing V 16G 3C26 M MAGNETRON CAUTION HEAT SINK PRIMARY LATCH SWITCH VER HIER 5 45 VOLTAGE amp TEMPERATURE 4 SECONDARY Vice SYMBOL COLOUR LATCH SWITCH SHORT SWITCH INVERTER OR ORANGE BOTTOM OUTSIDE BOTTOM INSIDE BL BLUE BR BROWN W WHITE SR ERI B Y YELLOW R RED E GR GREY W BK BLACK POWER RELAY POWER RELAY CL CLEAR RY1 RY4 4 4 1 Variable power cooking control HIGH VOLTAGE INVERTER POWER SUPPLY U controls output power by a signal from Digital Programmer Circuit DPC Power relay 1 stays on to supply power to the inverte
19. 44N30BP UPPER ORIFICE 1 14 E400A4760JP FAN MOTOR 1 15 E42094N30BP LOWER ORIFICE 1 16 E4008 1640 FAN BLADE 1 17 XTWANE4 12B SCREW 1 FOR MAGNETRON 18 2M236 M42E2 MAGNETRON 1 19 E030E4N30BP HV LEAD WIRE 1 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 V629MB 29 E110D4N30ZGP OUTER PANEL 1 NN V659FB 30 E63268960JP TT MOTOR 1 31 E21778000BP PULLEY SHAFT WASHER 1 32 E21315870GP PULLEY SHAFT 1 33 E30074L00GS LOWER HINGE 1 34 E01507550BP OUTER PANEL WARNING LABEL 1 NN V689WB NN V659WB 34 E01507560BP OUTER PANEL WARNING LABEL 1 NN V659CB MB FB 35 E20554L00GS COVERA 1 36 XST4 W5V SCREW 1 FOR COVER A 37 E200A4N50BP OVEN CAVITY 1 NN V689 37 E200A4N30BP OVEN CAVITY 1 NN V659 NN V629 38 E64604N30BP HEATER SUPPORT BRACKET 2 39 E03594N30GP GRILL LINK 1 40 E630G8000BP QUARTZ HEATER 2 41 E40244N30BP EXHAUST GUIDE 1 42 E00064080BP WARNING LABEL 1 43 E11405840GP STOPPER A 1 44 E607S7050AP STEAM SENSOR 1 NN V689WB 45 E407F8010BP SENSOR UNIT 1 NN V689WB 46 E64504N50BP SENSOR COVER B 1 NN V689WB 47 E09250000BD CUSHION RUBBER 1 NN V689WB 48 E09020000AH CUSHION RUBBER 1 25 12 DOOR ASSEMBLY
20. ED HANDLE SCREWDRIVER WARNING There is high voltage present with high current capabilities in the circuits of the primary and secondary windings choke coil and heat sink of the Inverter It is extremely dangerous to work on or near these circuits with oven energized DO NOT measure the voltage in the high voltage circuit including fila ment voltage of magnetron WARNING Never touch any circuit wiring with your hand nor with an insulated tool during operation 5 3 When parts must be replaced remove the power plug from the outlet When the 10A fuse is blown due to the operation of short switch 5 4 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 shorted contacts 1 2 This is mandatory Refer to and Measurement for these switches When replacing the fuse confirm that it has the appropriate rating for these models When replacing faulty switches be sure mounting tabs are not bent broken or otherwise deficient in their ability to hold the switches 5 5 Avoid inserting nails wire etc through any holes in the unit during operation Adjustments 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
21. ORDER NO MOP9905005C2 Service Manual INVERTER SYSTEM INSIDE Specifications Microwave Oven NN V659WB NN V659CB NN V659FB NN V629MB NN V689WB Ll t vv 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 to change without notice 1999 Matsushita Electric Industrial Co Ltd m b Panasonic All rights reserved Unauthorized copying and distribution is a violation of law WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public It does not con tain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by elec tricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product dealt with in this service information by anyone else could result in serious injury or death WARNING
22. 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 and closed positions with ohm meter low scale Normal continuity readings should be as follows Door Opened Door Closed Primary Latch Switch co Q open 0 close Secondary Latch Switch co Q open 0 close Power Relay B co Q open co Q close 7 2 Short Switch amp Monitor Circuit 1 Unplug lead wires from H V Inverter primary terminals 2 Connect test probes of ohm meter to the disconnected leads which were connected to H V Inverter 2 Test the continuity of short switch with door opened and closed positions using lowest scale of the ohm meter Normal continuity readings should be as follows Door Opened Door Closed 00 ANTENNA ANTENNA COOLING FIN GASKET MAGNETRON 02 12 CASE RX1 SCALE HIGHEST OHM SCALE TERMINALS 04 031M 17 7 3 Magnetron Continuity checks can only indicate an open filament or a shorted magnetron To diagnose for an open filament or shorted magnetron 1 2 3 Isolate magnetron from the circuit by disconnecting the leads A continuity check across magnetron filament terminals should indicate one ohm or less A continuity check between each filament term
23. REEN LED 3 CX320 EFOMC8004T4 CERAMIC RESONATOR 1 SW40 42 EVQ11L05R PUSH SWITCH 22 SW44 48 SW51 SW53 63 R182 ERDS2TJ361T RESISTOR 1 3600 R314 ERDS2TJ181T RESISTOR 1 1800 C22 AECF50F104Z CAPACITOR 1 100 nF D40 41 AESS1N4148M DIODE 2 IC1 AEIC8C34A120 IC1 1 C21 C40 C48 AECU1F103Z50 CHIP CAPACITOR 11 10 nF C110 C460 C20 C220 C222 AECU1F104Z25 CHIP CAPACITOR 5 100nF C224 R20 R111 R113 ERJ3GSYJ102V CHIP RESISTOR 6 1KQ R461 R340 R343 ERJ3GSYJ103V CHIP RESISTOR 4 10KQ R650 ERJ3GSY104V CHIP RESISTOR 1 100KQ R110 ERJ3GSYJ220V CHIP RESISTOR 1 220 R460 ERJ3GSYJ333V CHIP RESISTOR 1 33KQ R330 ERJ3GSYJ471V CHIP RESISTOR 1 4700 R40 R48 ERJ3GSYJ683V CHIP RESISTOR 9 68KQ DPC DU E603Y4N50BP NN V689WB Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PINCONNECTOR 1 CN1 AEEMMD05507W 7 PINCONNECTOR 1 RY1 RY4 AEGG5G1A12 RELAY 2 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 D2 D3 ERZV10D112C1 VARISTOR 2 1025 AEICP25011HL PHOTOCOUPLER 1 D26 AESTS1WBA60B DIODE BRIDGE 1 BZ310 EFBAH20C001 BUZZER 1 2KHz IC10 ETXMJ197X1BG SWITCH POWER SUPPLY 1 CN3 AEEMMF00703B 3 PIN CONNECTOR 1 CN4 AEEMMFO0D04W 4 PIN CONNECTOR 1 L10 EXCELDR35V INDUCTOR 1 Q220 Q221 AESCKTC200 NPN TRANSISTOR 2 11 1 220 CAPACITOR 1 22uF 16V C25 ECA2WHG100E CAPACITOR 1 10uF 450V C10 EEUFC1C471B CAPACITOR 1 470uF 16V R27 ERX12SJ1ROE RESISTOR 1 10 1 4W 010 2SD1859TV2 POWER TRANSISTOR 1 R220 R22 ERDS2TJ103T
24. RESISTOR 4 10 10 R24 C330 ECBT1E103ZF5 CAPACITOR 1 10nF C331 ECBT1H681KB5 CAPACITOR 1 68pF R11 ERDSTJ104T RESISTOR 1 100KQ 5 R221 R223 R310 ERDSTJ102T RESISTOR 3 1KQ 5 R10 ERDS2TJ821T RESISTOR 1 8200 D220 D225 AESS1N4148M DIODE 6 D25 AEDNERA1502 DIODE 1 ZD10 AEDZ5R6ES2T1 ZENER DIODE 1 R26 R25 ERDS1FJ563T RESISTOR 2 56 1 2W CN2 AEEMMFD0703W 3 PIN CONNECTOR 1 32 DPC AU E603L4N30BP NN V659 NN V629 Ref No Part No Description Qty Remarks CN6 AEEM19FESVKN 19PIN CONNECTOR 3 DISP AEDDHLC4L2BP LCD 1 220 AN6747B CUSTOM IC 1 D180 D182 AESQTLGE260T GREEN LED 3 CX320 EFOMC8004T4 CERAMIC RESONATOR 1 SW40 42 EVQ11L05R PUSH SWITCH 20 SW44 48 SW51 SW53 63 R182 ERDS2TJ361T RESISTOR 1 3600 R314 ERDS2TJ181T RESISTOR 1 1800 C22 AECF5O0F104Z CAPACITOR 1 100 nF D40 41 AESS1N4148M DIODE 2 AEIC8C34A120 IC1 1 C21 C40 C48 AECU1F103Z50 CHIP CAPACITOR 11 10 nF C110 C460 C20 C220 C222 AECU1F104Z25 CHIP CAPACITOR 5 100nF C224 R20 R111 R113 ERJ3GSYJ102V CHIP RESISTOR 5 1KQ R461 R340 R343 ERJ3GSYJ103V CHIP RESISTOR 4 10KQ R650 ERJ3GSY104V CHIP RESISTOR 1 100KQ R110 ERJ3GSYJ220V CHIP RESISTOR 1 220 R460 ERJ3GSYJ333V CHIP RESISTOR 1 33KQ R330 ERJ3GSYJ471V CHIP RESISTOR 1 4700 R40 R48 ERJ3GSYJ683V CHIP RESIS
25. RIFICE LOWER 01 024 6 6 Door disassembly 1 2 3 Aft Remove door C from door E by carefully pulling outward starting from upper right hand corner using a flat blade screwdriver Remove 4 screws holding door E to door A assembly to separate door E from door A Remove door key and door key spring er replacement of the defective component parts of the door reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage 1 3 When mounting the door to the oven be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment Adjust so that the door 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 Perform the microwave leakage test DOORA ASSY DOORE SCREWS DOOR HOOK SPRING DOOR C 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 2 3 cut off portions are properly trimmed off or bend to inside so that no sharp edge will expose to outside Disconnect 2 lead wires connected to the turntable motor Remove th
26. T TEST PROCEDURE Operation guide on the display To assist in programming the next operation will appear on the display When you are used to operating the oven you can turn the operating guide off To turn off Press 3 times OPERATING GUIDE OFF Stand To turn on Press 3 times OPERATING GUIDE ON Stand 1 SET CLOCK OPERATION DISPLAY OPERATION DISPLAY 6 Press start pad 1 Plug the power supply cord WELCOME TO PANASONIC REFER 5 5 into the wall outlet TO OPERATING INSTRUCTIONS Start X SEC 2 Press clock pad 7 When 1st stage cooking has SET TIME elapsed oven automatically switches to 2nd stage 1 00 MIN SEC 3 Enter time of day 8 When 2nd stage cooking has 10 1 Once 11 25 elapsed oven beeps 5 times OPEN DOOR min and shuts off Twice 10 1 _5 Times PRESS CLOCK 3 AUTO WEIGHT DEFROST 4 Press clock OPERATION DISPLAY 1 Select desired program Clock 11 25 MEAT ITEMS 1 Bread SET WEIGHT 2 Meat Items 3 Meat Joints T 2 MICROWAVE COOKING 2 STAGE OPERATION DISPLAY 2 Press g or Ib and oz 1 Place water load in oven LB OZ 2 Press Micro Power once to MEAT ITEMS set High Power HIGH SET WEIGHT di Micro Power SET TIME 3 Enter the weight by pressing up and down pads 1LB OZ 3 Settime at 5 sec by pressing PRESS START 1 sec pad 5
27. TIONS No key input 1 Push button switch Abnormal Push button switch Norma IC 1 No beep sound 1 IC 1 pin 8 voltage Abnormal IC 1 Norma 1C220 BZ310 Power relay A RY 2 does not turn on even 1 1 pin 11 voltage while operation Abnormal IC 1 though the program has been set and the Normal 5V Step2 start pad is tapped 2 Short circuit between pin 6 and pin Still not turn on RY 2 16 of IC 2 RY 2 turns on 220 No microwave oscillation at any power set 1 IC 1 pin 7 and 72 voltages while Abnormal IC 1 ting operation at high power Norma Step2 7 5V 72 5V 2 Q220 transistor Abnormal Q220 Norma 220 Dark or unclear display 1 Replace display and check opera Norma DISPLAY tion Abnormal IC 1 Missing or lighting of unnecessary segment 1 Replace IC 1 and check operation Normal IC 1 Abnormal DISPLAY Oven shuts down on Micropower after a 1 Unplug CN702 2 pin connector and OV 1 Latch switch short time set in test mode set high power measure voltage between terminals 2 DPC Power relay 1 Min H97 H98 appears in window and AC line voltage of 240V gt Step 2 oven stops operation Program High Unplug CN701 3 pin connector and 0V 1 DPC for 1 minute and conduct following test measure pin 1 voltage Approx AV 3V 1 Magnetron quickly unless H97 H98 appears and oven 2 Inverter stops NEW HV How to Check the Semiconductors Using an OHM Meter xx FORWARD REVERSE Diode ANODE CATHODE C D Di FORWARD REVERSE k B
28. TOR 9 68KQ DPC DU E603Y4L20BP NN V659 NN V629 Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PINCONNECTOR 1 CN1 AEEMMD05507W 7 PINCONNECTOR 1 RY1 RY4 AEGG5G1A12 RELAY 2 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 D2 D3 ERZV10D112C1 VARISTOR 2 1025 AEICP25011HL PHOTOCOUPLER 1 D26 AESTS1WBA60B DIODE BRIDGE 1 BZ310 EFBAH20C001 BUZZER 1 2KHz IC10 ETXMJ197X1BG SWITCH POWER SUPPLY 1 CN3 AEEMMF00703B 3 PIN CONNECTOR 1 CN4 AEEMMFO0D04W 4 PIN CONNECTOR 1 L10 EXCELDR35V INDUCTOR 1 Q220 Q221 AESCKTC200 NPN TRANSISTOR 1 11 1 220 CAPACITOR 1 22uF 16V C25 ECA2WHG100E CAPACITOR 1 10uF 450V C10 EEUFC1C471B CAPACITOR 1 470 16V R27 ERX12SJ1ROE RESISTOR 1 10 1 4W 010 2SD1859TV2 POWER TRANSISTOR 1 R220 R22 ERDS2TJ103T RESISTOR 2 10KQ 10 R24 C330 ECBT1E103ZF5 CAPACITOR 1 10nF C331 ECBT1H681KB5 CAPACITOR 1 68pF R11 ERDS2TJ104T RESISTOR 1 100KQ 5 R221 R223 R310 ERDS2TJ102T RESISTOR 3 1KQ 5 R10 ERDS2TJ821T RESISTOR 1 8200 D220 D225 AESS1N4148M DIODE 6 D25 AEDNERA1502 DIODE 1 ZD10 AEDZ5R6ES2T1 ZENER DIODE 1 R26 R25 ERDS1FJ563T RESISTOR 2 56 1 2W 33 E607X4N30BP Noise Filter Assembly Ref No Part No Description Qty Remarks R1 ERG1SJ753P RESISTOR 1 75 1W 1 amp 2 QETJ5225KRP2CE CAPACITOR 2 2 2uf C3 amp C4 ECKMNA472ME CAPACITOR 2 4700pF 250V AC L1 SC 08 E203A INDUCTOR 1 2 4mH F1 E62316010BP FUSE HOLDER 2
29. ard Defective boards must be replaced with a new one Check magnetron filament for open or short to casing before proceeding to determine a good magnetron Trouble Related to Digital Programmer Circuit SYMPTOM STEP CHECK RESULT CAUSE CORRECTIONS No display when oven is first 1 Fuse pattern of DPC Norma STEP 2 plugged in Open NOTE Shorted Circuit of ZNR L V T Oven Lamp etc Replace DPC 2 C10 Pin 9 Abnormal OV 1 10 Oven fe uas 12V line Normal 12V gt Siep3 3 IC 1 Pin 16 voltage Abnormal ZD10 Q10 Ribbon Cable Emitter of Q10 Normal 5 gt Step4 4 1 10 voltage Abnormal 220 15 of 1220 Normal IC 1 CX1 NOTE Procedure of fuse pattern repairing is as follows 1 When the fuse pattern PF2 opens 1 Remove the jumper wire PF3 2 Insert the removed jumper wire to PF2 position and solder it If both PF2 and fuse patterns are open please replace DPC NOTE At the time of these repairs make visual inspection of the varistor for burning damage and examine the transformer with tester for the presence of layer short circuit check primary coil resistance If any abnormal condition is detected replace the defective parts SYMPTOM STEP CHECK RESULT CAUSE CORREC
30. e magnetron 7 Remove 4 screws holding the magnetron NOTE After replacement of the magnetron tighten mounting screws properly making sure there is no gap between the waveguide and the magnetron to prevent microwave leakage Remove the oven lamp and lead wire harness cables from CAUTION When replacing the magnetron be sure the antenna gasket is in place NOTE Magnetron used for this model is unique type for inverter power supply system Make sure to use the one as listed in the part list 6 2 Inverter Power Supply U Discharge the high voltage capacitors 2 Unplug 3 lead wire connectors from the Inverter Power Supply board 3 Remove 1 screw to release the inverter grounding bracket 4 Remove 1 screw and remove the inverter PCB plus support 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 Securely connect 3 lead wire connectors 4 Make sure the heat sink has enough space gap from the oven Take special care not to touch any lead wire to the aluminium heat sink because it is hot 13 AIR GUIDE
31. e code system SELF TEST MODE DELAY E rower DISPLAY DISPLAY 4N30BPQ 4N50BPQ NN V689WB When oven is set in test mode place water load in oven set micropower to high and time to 1 minute press start H97 H98 appears in display window a short time after start key is pressed and no microwave oscillation with AC Ampare meter used for troubleshooting H97 H98 appears in the display window y Check oven input AC am pares measure at oven plug v more than 0 5A continuity Check magnetron filament OK refer to component test procedures less than 0 4A Loose wiring a e a Magnetron DANGER HIGH VOLTAGE DPC board Power Delay Latch switch DPC control signal Open NOTE If filament is opened it will flow AC input Ampare 0 5 1A STOP If all the above is OK up to this point there may be a H V Inverter problem SEE NOTE 22 NOTE DO NOT try to REPAIR this Inverter Power Supply U 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 handles very high voltage and very large current Off alignment of inverter board operation is dangerous Operating a misaligned Inverter circuit is dangerous due to the very high voltage and current that is produced by this bo
32. e time Refer to adjustment instructions Check continuity of power relay B s contacts between 1 and 2 and if it has conti nuity replace power relay B also Oven does not accept key input Program Key input is not in sequence Refer to operation procedure Shorted push button on DPC AU Defective DPC AU Refer to DPC troubleshooting Oven lamp and turntable motor turn on when Misadjustment or loose wiring of secondary Adjust door and latch switches oven is plugged in with door closed latch switch 2 Defective secondary latch switch En Timer starts countdown but no microwave Off alignment of latch switches Adjust door and latch switches oscillation 2 Open or loose connection of high voltage No heat while oven lamp and fan motor circuit especially magnetron filament circuit turn on NOTE Large contact resistance will bring lower magnetron filament voltage and cause magnetron to have lower output and or be intermittent 3 Defective high voltage component Check high voltage component according H V Inverter NEW H V Magnetron to component test procedure Page 17 and replace if it is defective 4 Open or loose wiring of power relay 5 Defective primary latch switch 6 Defective power relay B or DPC AU or DU Refer to DPC troubleshooting Microwave output is low 1 Decrease in power source voltage Consult electrician Oven takes longer time to cook food 2 Open o
33. e turntable motor by removing 2 screws NOTE To reinstall the motor cover use 4x6 screw 15 TURNTABLE MOTOR 6 8 Quartz heater 1 Disconnect lead wires from heater terminals 2 Remove 1 screw holding heater supports 3 Remove the heater HEATER SUPPORT 04 043M HEATER f 04 041M SCREW BASE MOTOR COVER 6 9 Steam Sensor NN V689WB Remove 1 screw holding steam sensor unit 2 Disconnect CN2 connector from digital programmer circuit board 3 Remove exhaust guide from 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 16 SENSOR MOUNTING PLATE 7 COMPONENT TEST PROCEDURE CAUTION NEW H V 1 High voltage is present at the high voltage terminal of the High Voltage Inverter U including aluminium heat sink during any cook cycle 2 It is neither necessary nor measurement of the high voltage 3 Before touching any oven components or wiring always unplug the oven from its power source and discharge the high voltage capacitors advisable to attempt 7 1 Primary Latch Switch Secondary Secondary Latch Switch and Power Relay B Interlocks 1 Unplug the lead connectors to
34. ecorded as T2 The normal temperature rise at High power position for each model is as shown in table 19 SCREW PRIMARY LATCH SWITCH DOOR HOOK ASSEMBLY SHORT SWITCH DOOR SECONDARY LATCH SWITCH SCREW t GAP SHOULD BE lt 0 7MM ACTUATOR LEVER Please confirm that the gap between the switch housing and switch actuator levers is no more than 0 7 mm when the door is closed 01 033 TABLE 1 1min test RATED OUTPUT 900W IEC705 88 TEMPERATURE RISE 10 9 TROUBLESHOOTING GUIDE OQ gr To CAUTION DO NOT try to REPAIR this H V Inverter power supply U Replace as whole H V Inverter U Unit When returning H V Inverter U make sure to pack as originally packed DO NOT RE ADJUST PRESET VOLUME on the H V Inverter U It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very large current with very high voltage Ensure proper grounding before checking for trouble Be careful of the high voltage circuitry taking necessary precautions when troubleshooting Discharge the high voltage that remains in the Inverter U When checking the continuity of the switches or the H V Inverter disconnect one lead wire from these parts and then check continuity with the AC plug removed To do otherwise may result in a false reading or damage to your meter When disconnecting a plastic connector fr
35. en 7 G A m mde csl c 4 RY4 99 J o i G5G 12V 656 12V it alt zm D222 zl z m g 72 9 8 a 1NATABM A 14 P C B No T rece 655541 20BP pets 5 p i 2 1 ANG747 OV 7 D 6 D A CIRCUIT 2 x k FEV 10 ffs RESET Do SER E 8544 5 2 PROTECT mL 186 45 E 6 IHPROTECTIH 5 7 25 xHPROTECTH 12 c CAE CIRCUIT 3 1 PCB DU J603Y4L20BP J603Y4N50BP For GRILL and For GRILL and PURPOSE NO Sensor model Sensor model 61 RY4 Q221 62 R224 R223 USE USE ary D223 D224 0225 E CN2 IC480 USE B 70 R480 R481 IG 745 30 INTO VREF VCC vss 55 P67 PWMO ANO AN4 P43 P40 XIN XOUT P54 RESET P52 P74 P70 4 SOUT SCLK AN2 AN3 P64 PES P47 P87 P86 Pes P84 P82 Ped P80 COM3 COM2 COMO SEGG SEG7 SEGB8 SEGS SEG 10 SEG11 SEG12 SEG13 SEG14 SEG 15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG2B SEG29 SEG30 SEG31 P20 vL3 vit P54 1 PRT le ie 10mmPitch 65 R340 10K C1 R341 10K C1 R342 10K C1 ria
36. from the container In Auto Sensor Cooking a carefully designed instrument called the steam sensor element senses this escape of steam Then based upon the Auto Sensor Programme selected the unit will automatically determine the correct power level and the proper length of time it will take to cook the food NOTE Auto Sensor Cooking is successful with the foods and recipes found in the Auto Sensor Cooking Guide Because of the vast differences in food composition items not mentioned in the Cooking Guide should be prepared in the microwave oven using power select and time features Please consult Variable Power Microwave Cookbook for procedures Explanation of the Auto Sensor Cooking process 1 During the first 10 second period there is no microwave activity and when calculating the T2 time by using the formula below make sure this 10 seconds 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 then shown on the display and the begins counting down Balance of cooking time T2 time The balance of cooking time which is called T2 time can be calculated by the following formula
37. ght Microwave Programs Auto Sensor Microwave 1 Program Auto Weight Combination Programs AUTO SENSOR Auto Sensor Combination 1 1 Programs 2 EN Auto Weight Defrost 1 Programs E Microwave Power Setting Grill Setting Combination Pad 6 Delay Stand Pad This can be used to delay a 7 puddings cooking program for up to 9 hrs 99 mins or used to time or for 8 standing non cooking time 1 Bread Clock Pad Press the clock pad Using the 1 Bread i minute and second pads set the 5 z 2 clock 12 hr clock Press clock pad again to stop colons One press clears your Start instructions NN V689 During Cooking One press temporarily stops the cooking program Another press cancels all your instructions and the time of day will appear in the display 14 Start Pad Press to start operating the oven If during cooking the door flashing Ib oz Conversion Pad Weight Selection Pads 9 e Stop Cancel Pad 10 Before Cooking The design of your control panel may vary from the panel displayed depending on colour but the words on the pads will be the same Beep Sound A beep sounds when a pad is pressed If this beep does not sound the setting is incorrect When the oven changes from one function to another two beeps sound After completion of cooking five beeps sound 2 OPERATION AND DIGITAL PROGRAMMER CIRCUI
38. ic components DESCRIPTION OF OPERATING SEQUENCE VARIABLE POWER COOKING POWER OUTPUT RY 1 INVERTER SETTING POWER CONTROL APPROX SIGNAL HIGH 900W stay ON stay ON DEFROST 270W stay ON ON OFF MEDIUM 600W stay ON stay ON LOW 440W stay ON stay ON SIMMER 250W stay ON ON OFF WARM 100W stay ON ON OFF GRILL COOKING GRILL NO HEATER RY 4 ON SEC OFF SEC 1 33 0 2 24 9 3 18 15 COMBINATION COOKING COMBINATION HEATER RY 4 MICROPOWER LEVEL NO ON SEC OFF SEC LOW SIMMER WARM MED 1 33 0 0 0 0 0 2 24 9 0 0 0 0 3 18 15 0 0 0 0 AUTOWEIGHT DEFROST CATEGORY WEIGHT COOKING TIME BREAD 100g 50 seconds MEAT ITEMS 150g 2 mins 21 Secs MEAT JOINTS 400g 7 mins AUTOWEIGHT COOK CATEGORY WEIGHT COOKING TIME CHILLED MEAL 200g 2 mins 50 secs FROZEN MEAL 200g 6 mins 40 secs FRESH VEG 100g 2 mins 20 secs FRESH FISH 100g 1 min 10 secs JACKET POTATOES 200g 9 mins 20 secs FROZEN POTATOES 100g 4 mins 40 secs 4 5 Auto Sensor cook NN V689WB Auto sensor cooking is a revolutionary way to cook by microwave without setting a power level or selecting a time All that is necessary is to select an Auto Sensor Program before starting to cook Understanding Auto Sensor Cooking As a food cooks a certain amount fo steam is produced If the food is covered this steam builds up and eventually escapes
39. inal 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 pads on the key board is as shown in digital programmer circuit schematic 7 5 Inverter Power Supply U DO NOT try to REPAIR this H V Inverter power supply U Replace as whole H V Inverter U Unit HIGH VOLTAGE HEAT SINK TRANSFORMER RECTIFIER BRIDGE CHOKE COIL FILM CAPACITORS SAND BAR RESISTOR PRIMARY WINDINGS CUSTOM I C HIGH VOLTAGE DIODES PHOTO COUPLER CN 701 SECONDARY WINDINGS CN 703 CURRENT TRANSFORMER HIGH VOLTAGE CAPACITORS INVERTER POWER SUPPLY DIAGRAM 7 6 Inverter Power supply U T1 TIME T2 TIME WARNING Remaining cooking time Do not attempt to make any measurements in the high 1 Min 30 Sec 4 Min 8 Sec 23 Sec voltage circuitry of the inverter or magnetron See Troubleshooting of inverter circuit and magnetron on Pages 19 and 20 to determine if the inverter power supply is functioning 7 7 Steam Sensor and digital programmer circuit CAUTION Do not touch any parts of the cicuitry on the digital programmer circuit since static electric discharge may damage this control panel Always ground yourself while working on this panel to discharge any static builtt up on your body In order to determine if the steam sen
40. lation H97 H98 appears in the DANGER display window HIGH VOLTAGE v Check magnetron filament Open Magnetron CORAM NOTE DO NOT try to REPAIR this Inverter Power Supply U fert t and also DO NOT RE ADJUST PRESET VOLUME OK ee ee on the board It is very dangerous to repair or adjust test procedures without sufficient test equipment because this circuit DPC board Power Rela handles very high voltage and very large current Off oneer Inverter AG OV y Loose relay wiring T alignment of inverter board operation is dangerous 9 Latch switch Operating a misaligned Inverter circuit is dangerous due to the very high voltage and current that is AC 240V unplug CN702 and measure produced by this board Defective boards must be at lead wire harness side replaced with a new one Check Inverter control signal OV DPC board at CN701 pin 1 and 2 Approx AC 3V unplug CN701 and measure R at wire harness side Check magnetron filament for open or short to casing before H V Inverter U proceeding to determine a good magnetron gt NOTE 21 Alternative way to troubleshooting oven with AC Ampare meter used NEW H V Oven shuts down after approximately 15 or 33 seconds If the microwave oven shuts down after a short time in micropower mode conduct the following test The microwave oven must be set in test mode to activate the self diagnostic failur
41. om a terminal you must hold the plastic connector instead of the lead wire and then disconnect it otherwise lead wire may be open or the connector cannot be removed Do not touch any parts of the circuitry on the digital programmer circuit since static electric discharge may damage this control panel Ensure you are touching the ground while working on this panel to discharge any static charge in your body 240VAC is present on the digital programmer circuit Terminals of power relay s and primary circuit of low voltage transformer When troubleshooting be cautious of possible electrical shock hazard Before troubleshooting operate the microwave oven following the correct operating procedures in the instruction manual in order to find the exact cause of any trouble since operator error may be mistaken for the oven s malfunction SYMPTOMS CAUSE CORRECTIONS Oveniis dead Open or loose lead wire harness Open low voltage transformer Defective DPC AU or DPC DU Fuse is OK No display and no operation at all No display and no operation at all Fuse is blown Shorted lead wire harness Check adjustment of primary secondary Defective primary latch switch NOTE 1 latch switch and short switch including Defective short switch NOTE 1 door Defective Inverter power supply U NEW H V Refer to component test procedure Page 17 EONS N NOTE 1 All of these switches must be replaced at the sam
42. operate on a 2 wire extension cord The microwave oven is designed to be used when grounded It is imperative therefore to make sure it is grounded properly before beginning repair work 5 2 Inverter Warnings NEW H V DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE HOT LINE OF THE INVERTER POWER SUPPLY U This High Voltage Inverter Power Supply circuit handles very high voltage and very high current for the magnetron tube Though it is free from danger in ordinary use extreme care should be taken during repair As you can see it looks like a TV flyback transformer however the current is extremely large and so danger exists by its high current and high voltages The aluminium heat sink is also energized with high voltage HOT so do not touch when AC input terminal is connected to the power devices Collector is directly connected to the Aluminium heat sink The Aluminium heat sink may be HOT by heat energy there fore extreme care should be taken during servicing and replacing Check the grounding DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE HOT LIVE OF HEAT SINK HEAT SINK 9 CAPACITORS gom CHOKE COIL SAND BAR E RESISTOR 3 HIGH VOLTAGE s TRANSFORMER mL 0 PRIMARY CUSTOM C E 4 WINDINGS PHOTO 75010 HIGH VOLTAGE COUPLER DIODE
43. r circuit The outpower is controlled by the drive signal level from the inverter circuit NOTE 1 The ON OFF time ratio does not correspond with the percentage of microwave power since approximately 2 seconds are required for heating of magnetron filament NOTE 2 If microwave cooking is over 8 minutes with HIGH power fan motor rotates for 1 minute after cooking to cool oven and electric components 4 2 Grill cooking The digital programmer circuit operates power relay 4 in the sequence as shown in the table 4 3 Combination cooking Combination cooking is accomplished by microwave and grill cooking The digital programmer circuit controls ON OFF time of power relay 4 and the inverter control signal level as shown in the table NOTE After grill and combination cooking fan motor rotates for 1 minute to cool oven and electric components 4 4 Autoweight defrost autoweight cook When those auto control feature is selected 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 circuit NOTE After one touch menu and auto reheat cooking fan motor rotates for 1 minute to cool oven and electr
44. r loose wiring of magnetron filament Refer to output test procedures by water circuit Intermittent oscillation temperature raising test 3 Aging change of magnetron Turntable on when door is opened 1 Shorted primary latch switch Loud buzzing noise can be heard 1 Loose fan and fan motor 20 SYMPTOMS CAUSE CORRECTIONS pr 9 Turntable motor does not rotate Open or loose wiring of turntable motor 2 Defective turntable motor 10 Oven stops operation during cooking Open or loose wiring of primary and Adjust door and latch switches secondary latch switch 11 Oven returns to plug mode 9 secs after pad Open steam sensor is pressed in sensor mode 2 Defective steam sensor NN V689WB Troubleshooting of Inverter Circuit U and Magnetron NEW H V Oven shuts down after approximately 15 or 33 seconds If the microwave oven shuts down after a short time in micropower mode conduct the following test The microwave oven must be set in test mode to activate the self diagnostic failure code system SELF TEST MODE DISPLAY DISPLAY FA mon power 4N30BPQ 4N50BPQ STAND START NN V689WB When oven is set in test mode place water load in oven set micropower to high and time to 1 minute press start H97 H98 appears in display window a short time after start key is pressed and there is no microwave oscil
45. rth strip ESCUTCHEON NN V689WB ONLY BASE Sem MEMBRANE i gt ESCUTCHEON SHEET up o Oe la NN V629MB 14 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 use a soldering iron or desoldering tool of more than 30 watts on DPC contacts With all the terminal pins cleaned and separated from DPC contacts remove the defective transformer power relays and install new transformer power relays making sure all terminal pins are inserted completely Resolder all terminal contacts carefully 2 6 5 Fan Motor Remove 2 screws and remove tie bar Disconnect 2 lead wires from fan motor terminals Disconnect all lead wires from noise filter Remove the noise filter Remove 4 screws holding fan motor and upper and lower orifice Detach the orifice assembly with fan motor from oven assembly Remove fan blade from the fan motor shaft by pulling it straight out Ov o mu NOISE FILTER a EU X REMOVE 4 SCREWS ORIFICE UPPER 2 FAN MOTOR FAN BLADE O
46. select grams or LB OZ 6 GRILL OPERATION OPERATION DISPLAY CHILLED PIZZA 1 Select grill power press once for grill 1 GRILL 1 SET WEIGHT SET TIME 2 3 Enter the weight 1LB OZ Grill 1 2 3 2 Set cooking time PRESS START 1 00 MIN SEC 4 Press start y 6 25 GRILL 1 ar PRESS START 3 Press start v 1 00 77 SEC 9 AUTO SENSOR NN V687WB OPERATION DISPLAY 1 Select auto sensor program STEAMED PUDDING PRESS START 7 X 2 Press start STEAMED PUDDING X 10 TO SET CHILD SAFETY LOCK OPERATION DISPLAY 1 Press start 3 times to display lock LOCK Start 11 TO RESET CHILD LOCK OPERATION DISPLAY 1 Press stop cancel 3 times Time of day or colon appears in display 1 1 25 Stop Cancel 12 DEMONSTRATION MODE OPERATION DISPLAY 1 Press clock pad 3 times Clock DEMONSTRATION MODE PRESS ANY KEY 13 CANCEL DEMONSTRATION MODE OPERATION DISPLAY 1 Press clock pad 3 times Clock 11 25 3 SCHEMATIC DIAGRAM MAGNETRON 2M236 M4 n Note Door is closed Unit is not operated NOISE FILTER OF sw3 J PO DB 1 23 C00 LOCK SWITCH T 77 E701 SW4 SECONDARY INTER H 00 LOCK SWITCI 3 SW5 MONITOR DEVICE GROUNDING 7 FUSE 2 0mH OR 10 SW1 THERMAL CUT OUT MAG BL SW3 PRIMARY INTER AC23
47. sor programme of the digital programmer circuit is in working order or not do the fllowing test 1 Place a water load 150cc in the oven 2 Set Auto Sensor Program 5 Fresh Fish 3 Tap Start pad 4 Steam Sensor detects steam about 1 minute 30 seconds to 4 minutes after the Start pad is tapped 5 T1 time cooking automatically 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 18 8 MEASUREMENTS AND ADJUSTMENTS WARNING For continued protection against radiation hazard replace only with identical replacement parts When the 10 Amp fuse is blown due to the operation of short switch you must replace Primary latch switch and short switch Then follow the installation procedures below Interlock switch replacement In replacing faulty Switches be sure mounting tabs are not bent broken or otherwise deficient in their ability to hold the switches Refer to schematic diagram to ensure proper connection 8 1 NOTE No specific adjustment during Installation of Primary latch switch Secondary latch switch and Short switch When mounting Primary latch switch Secondary latch switch and short switch to door hook assembly mount the Primary latch switch the Secondary latch switch and the short switch to the door hook assembly as shown in the illustration installation of Primary
48. the Inverter board because it is very dangerous to adjust it without proper test equipment 5 Do not test oven while Inverter grounding strip or screws are loose It is very dangerous to operate the H V Inverter Circuit U with loose mounting screws or if improperly grounded INVERTER POWER SUPPLY DIAGRAM HIGH VOLTAGE AREA 1 DO NOT TOUCH HOT HIGH VOLTAGE 2 H V INVERTER U 3 HEAT SINK RECTIFIER BRIDGE CHOKE COIL FILM CAPACITORS HIGH VOLTAGE TRANSFORMER SAND BAR RESISTOR PRIMARY WINDINGS LEAD WIRE SECONDARY WINDINGS CUSTOM I C HIGH VOLTAGE DIODES PHOTO COUPLER 701 CN 703 INVERTER WARNING DO NOT TOUCH 4 HIGH VOLTAGE CAPACITORS INVERTER SUPPORT LABEL CURRENT TRANSFORMER BRACKET GROUNDING PLATE 5 DO NOT REPAIR REPLACE WHOLE H V INVERTER U 10 11 12 13 14 15 16 17 TABLE 5 m uldc 4 OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE eere 5 SCHEMATIC DIAGRAM 8 DESCRIPTION OF OPERATING SEQUENCE 9 4 1 Variable power cooking 229 4 2 Grill cooking 2 9 4 8 Combination cooking
49. times 5SEC m NA Ry 1 PRESS START w 1 5 Times NN V689 4 Press Micro Power pad 3 times to set Medium Power MEDIUM 4 Press start pad 7 9 08 Start 5 Set for 1 minute by pressing X 1min pad once 10 1 min min Once 10 1 sec sec 1 00 MIN SEC PRESS START MEDIUM 4 DELAY STAND 7 COMBINATION COOKING Start OPERATION DISPLAY OPERATION DISPLAY 1 Set power level and time 1 Press combination COMBINATION SELECT GRILL LEVEL 2 Press stand STAND Combination Delay SET TIME 2 Press stand 3 Set standing time BRIT ZI H1 00 Grill 1 2 3 PRESS START SELECT MICROPOWER 3 Select micropower low LOW 4 Press start ww 0100 a SET TIME Start 1 00 T MIN SEC 4 Setcooking time 1 00 5 DELAY START MIN SEC OPERATION DISPLAY 4s 1 Press delay PRESS START Delay DELAY START 5 Press start Stand 1 00 Ac KS 2 Set delay time min min H1 00 8 AUTOWEIGHT COOK PROGRAM EXCEPT NN V687 CHOOSE COOKING MODE OPERATION DISPLAY 1 Select auto weight program 3 Set power level and time CHILLED MEAL 1 Reheat Meal 4 Press start pad Start 2 Press to
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