Panasonic NE-9970 Service Manual Download Page 1

Page: 1 / 47

Summary of Contents for NE-9970

Page 1: ... X 17 D X 15 3 4 H 606 mm W X 432 mm D X 400 mm H Oven Cavity Dimensions 16 W X 15 1 2 D X 9 3 4 H 406 mm W X 395 mm D X 250 mm H Specifications subject to change without notice Power Source Power Requirement Matsushita Engineering and Panasonic Hawaii Inc Panasonic Saes Company Service Company 91 238 Kauhi St Ewa Beach Division of Matsushita Electric 50 Meadowland Parkway P O Box 774 of Puerto Ri...

Page 2: ...sissauga Ontario L4W 2T3 5 There are special components used in the microwave oven which are important for safety These parts are shaded on the schematic diagram and marked with a A on the replacement parts list It is essential that these critical parts should be replaced with manufacturer s specified parts to prevent microwave leakage shock fire or other hazards Do not modify the PRECAUTIONS TO B...

Page 3: ...s NE 9970 NE 9970C and NE 9870 NE 9870C are identical except NE 9970 NE 9970C have Auto Sensor Cooking Control feature while NE 9870 NE 9870C do not References to unique operating features of applicable model will be refered to in this service manual Location of nameplate The nameplate is located at lower frame of the escutcheon base as illustrated in Fig A The model and serial numbers will be fou...

Page 4: ... of your oven Glass Ceramic Tray Must be placed in the oven before cooking Roller Ring Must be placed in the oven before cooking _ _____ _______ Page of operating Instructions __________ _ __y og Auto Weight Combination Pad Time Pads Cyclic Defrost Pad Power Pad ma Stand Timer Pad Broil Pad Combination Pad 1 0 Pound 10 Ounce Pad 0 1 Pound 1 Ounce Pad Cooking Guide a_i Auto Weight Defrost Pad Auto ...

Page 5: ...LOW The Pads serve as a 10 minute pad 1 minute pad 10 second pad and MIN MIN SEC SEC 1 second pad from the left and can be programmed up to 99 minutes 10 99 seconds Example 1 To set 13 minutes 45 seconds Touch 10 MIN Pad once 1 MIN Pad 3 times 10 SEC Pad 4 times 1 SEC Pad 5 times Example 2 To set 30 seconds Touch 10 SEC Pad 3 times LOW Microwave power Combination and Convection The Pads serve as a...

Page 6: ... refer to Introduction in the Panasonic Cookbook Press this pad to select the appropriate cook category 1 through 5 Listed below are the recommended foods and maximum weight limits for each category Category Food Maximum Weight Frozen Vegetables 32 oz Frozen Entrees in a Pouch 16 oz Frozen Entrees 32 02 Frozen Breakfasts 16 oz iFrozen Dinners 32 oz Auto Weight Defrost Pad This feature allows you t...

Page 7: ...rt Pad is touched The oven light will stay on or turn on whenever the door is opened Beep Sound When a padis touched correctly a beep will be heard If a pad is touched and no beep is heard the unit has not or cannot accept the instruction The oven will beep twice between programmed stages During Auto Weight Defrost oven will beep twice two times during total defrosting time These beeps are a signa...

Page 8: ...ected the remaining cooking time immediatety appears in the display window and begins to count down At this time the oven door may be opened to stir turn or add foods On Cook A1 no time will appear in display window Auto Sensor Cooking is successful with the foods and recipes found in the cookbook and marked with the Symbol A Because of the vast differences in food composition recipes and charts w...

Page 9: ...rom display window Third stage power indicator light turns on Third stage cooking time appears in display window After Oven Starts MICROWAVE COOKING BEGINS Turntable rotates Third stage cooking time disappears and first stage cooking time reappears in the display wiridow and begins to count down First stage power indicator light turns on and starts to blink Second stage power indicator light turns...

Page 10: ...date ON 0286 OL66 90286 90266 4N Microwave Auto Weight Defrost Clock time disappears The selected category number appears Press Auto Weight Defrost Pad to select Defrost Category 1 through in the display window AUTO 3 Auto Weight WEIGHT DEF and pounds Ib Step 2 indicator light turns on Set the Weight of your meat in Category number disappears and pounds and tenths of apound by Weight the weight se...

Page 11: ...re pressing Time Pads CAUTION Door wiil get hot during convection cooking Please handle door carefully 24 Combination Aremarkable development in technology enables Panasonic to bring you an oven that combines the best features of both microwave and convection cooking It cooks foods with speed and accuracy while roasting and evenly browning them to juicy tender perfection Note 1 Do not use metal co...

Page 12: ...cipes and charts Step 1 Press Broil Pad for desired Broil category 1 or 2 Clock time disappears Broit category 1 or 2 and BROIL indicator light turn on Step 2 Time Cooking Step 1 Note Place Oven Broiling Rack in upper rack guides before you start preheating Touch Start Pad Oven light turns on Turntable rotates Auto Preheating starts and BROIL indicator blinks P for PREHEATING appears and remains i...

Page 13: ...PROGRAMMED TIME HAS ELAPSED oven beeps five times Time of day appears in display window Note Ifoven door is opened during the timer function the time in the display window will continue to count down Replacement of Oven Light When itbecomes necessary to replace the oven light i 2 you can replace ityourself Please follow the directions Stand Time Ponaeaea Step 1 Step 1 Turn off theoven and unplug i...

Page 14: ...IDITY SENSOR FOR NE 9970 ONLY IMPORTANT SAFETY NOTE THE SHADED AREA ON THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM MICROWAVE RADIATION FIRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SHADED AREAS OF THE SCHEMATIC DIAGRAM S 2L 2M APH 1 By 0Z86 4N 0266 3N NVHDVIC ...

Page 15: ...OVEN THERMISTOR FOR NE 9970C ONLY IMPORTANT SAFETY NOTE THE SHADED AREA ON THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM MICROWAVE RADIATION FIRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SHADED AREAS OF THE SCHEMATIC DIAGRAM S 2L 2M CPH 2z ark oo o NN LSS Zz Bat...

Page 16: ... 9870C WIRING DIAGRAM NE 9970 NE 9870 BOA aa Pee FUSE 15A ees eI OVEN LAMP 20W he oie OO OCD gagorTy noramicus ee Gioond tee Pak SWITCH fer R w e ee OY ee PROGRAVMER se w PRO TERMINATION LATCH SWITCH 8 FAN MOTOR TRANSFORMER ...

Page 17: ...IRING DIAGRAM NE 9970C NE 9870C erlL __Ir ee oe FUSE 15A Gms OVEN LAMP 20W POR MIDEL_NE 9670C Ch oro HUMIDITY NOT APPLICABLE SENSOR G6 Bar s QIGITAL a PROGRAMMER CIRCUIT he NO TERMINATION r HIGH VOLTAGE TRANSFORMER BLACK R _REO oR ORANGE ...

Page 18: ...energized for 9 seconds and de energized for 13 seconds by DPC See Fig 7 C During standing periods power relay C is always open resulting in no microwave power ae NOTE Defrost time selected is converted into seconds by the DPC but display will show selected time in minutes and seconds as prog rammed The total number of seconds is divided Into 8 time periods The remainder seconds not equally divisi...

Page 19: ...k Pad Weight Pads Start Pad When the Auto Weight Control Frozen Cook feature is selected and the Start Pad is tapped A The digital programmer circuit functions exactly the same as when Auto Weight Control Defrost feature is selected except for some variations in cooking powers and cooking times Fig 11 shows the cooking times for respective weights by categories NE 9970 NE 9970C NE 9870 NE 9870C WE...

Page 20: ...OTE When Broil cooking feature is selected oven temperature Is de termined automatically by category as shown in Fig 13 Fig 12 6 Combination cooking control Combination cooking is accomplished by microwave and convection cooking being done alternately during one combination cooking cycle One combination cooking cycle is 22 seconds A During combination cooking the digital programmer circuit control...

Page 21: ...times for respective weights by categories B When the combination cooking time in the display window has elapsed the oven turns off automatically by the controlled signal from the digital programmer circuit a SELECTED CATEGORY1 CATEGORY3 CATEGORY 4 CATEGORY 6 CATEGORY 7 18 min 30 sec 27 min 00 sec 23 min 00 sec 23 min 00 sec 37 min 00 sec 54 min 00 sec 46 min 00 sec 46 min 00 sec 55 min 30 sec 1ho...

Page 22: ...iner placed in the oven the humidity sensor detects it and the microp rocessor calculates the balance of cooking time This T2 time is then shown in the display and begins counting down Balance of cooking time T2 time The balance of cooking time which is called T2 time can be calcu lated by the following formula T2 time in sec T1 time X K factor NOTE When calculating T2 time the last digit of T1 ti...

Page 23: ...on WARNING Never touch any circuit wiring with your hand nor with an insulated tool during operation 3 When parts must be replaced remove the power plug from the outlet 4 When the 15 Amp fuse is blown due to the operation of short switch WARNING When the 15 Amp fuse is blown due to the operation of short switch you must replace power relay C latch switch A and short switch For NE 9970C and NE 9870...

Page 24: ...ove 2 screws holding the fan motor 3 Replacement of the digital programmer circuit D P C NOTE Be sure to ground any static electric charge built up in your body before handling the D P C A Unplug the 3 pin connector CN5 from the D P C NE 9970 NE 9970C only Caution when removing connector CNS This connector is a special type which may be very hard to remove just by pulling directly outward Instead ...

Page 25: ... handle Fig 25 H Separate the door A from door E by carefully freeing the 8 catch hooks on door A while pulling outward See Fig 26 and 27 1 Remove door keys door key lever door key spring and handle pins from the door E Fig 25 J When mounting the door to the oven be sure to adjust the door para llel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the directio...

Page 26: ...ing heater fan motor bracket The screws on outer frame side is not necessary to remove H Remove 2 screws holding air guide B I Remove 4 screws holding heater cover onto oven assy both sides only NOTE Do not remove screws on top of heater cover J Remove heater cover assembly by lifting it up carefully with heater fan motor bracket slightly lifted up K Remove spring speed nuts from heater terminals ...

Page 27: ...sconnecting the leads B 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 batteries should be used to check the front to back resist ance of the diode otherwise an infinite resistance may be read in both directions A normal diode s resistance wil...

Page 28: ...tained 7 Low voltage transformer Check the voltage of secondary winding of the low voltage transfor mer L V T The normal voltages of the L V T with no load should read as shown in Fig 37 A and 37 B When measuring the voltage of L V T measure the voltage between each pin of the L V T with the connector CN2 unplugged CAUTION A 120V AC is present at the primary circuit of the low voltage transformer ...

Page 29: ...ction of LEVER arrow in Fig 39 so that the oven door will not have any play in it Check for play in the door by pulling on the door Make sure that the latch key moves smoothly after adjustment is completed Completely tighten the screws holding the door hook B assembly to the oven assembly 3 Measurement of microwave output The power output of the magnetron can be measured by perform ing a simple wa...

Page 30: ...elease lev er less than 2mw eat A Pour 275 15cc 9ozs 1 20z 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 B Set the radiation monitor to 2450MHz and use it following the manu facturer s recommended test procedure to assure correct results C When measuring the leakage always use the 2 inch 5 cm spacer supplied with the probe i D Tap the...

Page 31: ...t turn on or does not blink when the clock pad is tapped Adistinct change in the brightness of one or more numbers in the colgsh Meee ete te AUTO WEIGHT DEF FROZ COOK COMB ne or more digits in the display not on when they shouid be Wrong or no power indicator light for power level selected CONV ae Specific numbers for example 2 or 3 will not display GRILL Jr Display does not count down with time c...

Page 32: ...incorrect operation of latch switch A Both no continuity Defective high voltage capa citor Disconnect one side of lead wire connected from high vol Replace tage transformer to the high voltage capacitor and operate the unit Defective high voltage trans 15A fuse again blows fonner Replace 1 15A fuse blows For NE 9970C NE 9870C RESULT REMEDY Shorted contacts of short Replace latch switchA secondary ...

Page 33: ...CN1 and check continuity of low voitage transformer Check between pin no 1 and 5 TROUBLE 3 Display shows all figures selected but oven does not start cooking even though desired program and time are set and start pad is tapped Cooking time counts down and oven lamp turns on Check continuity of latch switch A Faulty of latch switch B Loose connection of latch switch A s wiring improper adjustment o...

Page 34: ...hort circuited this W3 lead wire will be burnt and act as a protector When this lead wire is open replace together with mag Open winding of high voltage netron transformer or faulty insulation NOTE3 Refer to component test procedure on page 27 of filament winding i NOTE 3 NOTE 2 Replace Shorted diode NOTE 3 Replace Faulty magnetron NOTE 3 Replace TROUBLE 5 Microwave output power is low First of al...

Page 35: ...oil NOTE 4 Defective DPC Replace NOTE 4 When checking DC voltage check between coil terminals of power relay D with door opened TROUBLE 7 Magnetron oscillates for 1 5 minutes after power supply cord is plugged into wall receptacle then stops all functions of the oven Then about 7 15 minutes later magnetron oscillates again REASON During first 1 5 minutes magnetron is oscillates but the fan motor d...

Page 36: ...V Defective D P C Replace TROUBLE 10 Heater turns on when microwave cooking In this case this trouble should be causing fuse and or home circuit breaker to open Continuity TROUBLE 11 Combination cooking is not working in correct order REMEDY Check continuity of power re lay B Check between termin als 1 2 and 3 4 Check timing period of DC voltage being applied to pow er relay B and C Refer to the d...

Page 37: ...isplay window will show TOD again Clock time disappears HIGH Power indicator light turns on Display window shows 5 First stage cooking time 5 and HIGH power indicator light disappear Oven beeps twice MED power indicator light turns on Display window shows 4 Second stage cooking time 4 and MED power indicator light disappear Oven beeps twice LOW power indicator light turns on Display window shows H...

Page 38: ...dicator lights turn on Ib appears in the display window Category number 2 disappears and the weight selected 16 0 appears in the display window Oven light turns on Microwave defrosting begins Auto Weight Defrost indicator light begins to blink Turntable begins to rotate Weight in display window disappears Defrosting time 2H 29 appears and counts down Oven shuts off The display window will show TOD...

Page 39: ...e Clock time disappears A5 appears in display window Auto Sensor Cook indicator lights turn on Auto Sensor Cook indicator light starts to blink Oven lamp turns on Fan motor and tumtable start rotating Oven lamp will dim a little about 50 seconds after Start Pad is tapped This indicates that magnetron has started oscillation Auto Sensor Cooking automatically switches to time cooking A5 disappears t...

Page 40: ...bright and dim cycles This indicates that heater turns on and off to keep a constant oven temp As soon as oven lamp dims unplug the AC power plug and CN6 connector from DPC Measure the oven sensor resistance with ohmmeter as soon as possible It should read approx 70 108 Kem UNPLUG AC PLUG UNPLUG CN6 CONNECTOR BRIGHT DIM UA UIA WA VZ HEATER HEATER OFF ON MEASURE THE OVEN TEMP PREHEATING SENSOR RESI...

Page 41: ... off automatically Turntable stops rotating Convection cooking indicator light turns off T O D appears in the display window 8 Combination Cooking Time cooking Category number 2 appears in the display window Combination cooking indicator light turns on Set cooking time for 2 min Category number 2 disappears and Combination Cooking time H 2 appears in the display window Tap Start pad Oven lamp turn...

Page 42: ...lay window AUTO WEIGHT Set the weight for 3 pounds by tap ping 1 0 Ib pad 3 times Category number C5 disappears and selected weight 3 0 appears in the display window AUTO WEIGHT Selected weight 3 0 disappears and Combination Cooking time 1H 18 appears and starts counting down Auto Weight Combination Cooking indicator light begins blinking Auto Weight Combination Cooking begins Tap Start Pad Oven s...

Page 43: ...D PARTS LIST 4 Schematic diagram For NE 9870 NE 9870C For NE 9970 NE 9970 See page 44 See page 44 See page 44 Ref No 75 L V Transformer assy For NE 9870 NE 9870C For NE 9970 NE 9970C NE 9970 NE 9970C NE 9870 NE 9870C S 2L 2M APH CPH ...

Page 44: ...NG MATERIAL FRONT VIEW MAGNETRON PB Pi2 S ffvoll in the oven SS l ae me ph ae ASSY gh epee GLASS CERAMIC TRAY ASSEMBLY_ cI Uf Humidity sensor element D P Circuit CN5 HIGH VOLTAGE TRANSFORMER S 2L 2M APH CPH ESCUTCHEON BASE ASSEMBLY _ To chassis HIGH VOLTAGE CAPACITOR S 2L 2M APH CPH kn on iim oo Oo AN SS zz ah oo Oo AN T 00 ...

Page 45: ...lley shaft Rubber foot Spacer Door arm Reinforce bracket A ANE200YX00AP ANE1008B00SS ANE6611X00AP ANE30042L0AP ANE20342L0AP Turntable motor Lower hinge Door hinge spacer Lever Thermal cutout ANE6326X00AP ANE30072L0AP ANE3081B60AP ANE62412LO0AP ANE6145X00AP Washer Glass plate ANE2177X00AP ANE64372LOAP For oven lamp ANE61392LOAP Insulation tube ANE65642L0AP_ Bracket For NE 9870 ANE605P2L0CP Bracket ...

Page 46: ...brane switch For NE 9970 NE 9970C Smoke panel Bracket Escutcheon panel Escutcheon A Escutcheon sash Door opening button Cook lever shaft Cook lever spring Door opening lever Plate spring NOTE 5 Please order name plate together PACKING AND ACCESSORIES ANEOOOB2MOAP ANE00032MOAP ANEO0032MOCP ANE02072L0AP ANE06022L0AP ANE01022L0AP ANE01022L0CP ANE01022MOAP ANE01022MOCP ANE01042L0AP ANE01052L0AP ANE060...

Page 47: ...V Transformer For NE 9970 NE 9970C 4 Fan motor bracket B 1 Reinforce bracket 2 Thermal cutout For magnetron 1 Shaft 1 Shaft 1 Sensor element For NE 9970 XNWANESES XNG4EVS XUBANE66FZ XYEANE5 E12S For NE 9870 NE 9870C ETP41K86B For NE 9970 NE 9970C ETP54J9A ANE6249X40AP L V Transformer XST4 5VS XTW44 12T XTNANE4 10B XTC4 12BC Screw XPDANE3A16KP XTWANE4 12E Wire pin Screw sa FH PFHNMHKNYNNYNANN NH BA...

Search results

Summary of Contents for NE-9970

Reviews:

Related manuals for NE-9970

Brands by name

Popular brands

Panasonic NE-9970, Service Manual

Search results

Summary of Contents for NE-9970

Reviews:

Related manuals for NE-9970

Brands by name

Popular brands