Panasonic NN-SD985S Service Manual Download Page 1

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Panasonic

Appliances

Microwave

Oven

(Shanghai) Co., Ltd. 2015.

NN-SE995S
NN-SD985S
NN-ST965S

RPH (MEXICO & LATIN AMERICA)

Microwave Oven

ORDER NO.PAPMOSH1501010CE

Summary of Contents for NN-SD985S

Page 1: ... Panasonic Appliances Microwave Oven Shanghai Co Ltd 2015 NN SE995S NN SD985S NN ST965S RPH MEXICO LATIN AMERICA Microwave Oven ORDER NO PAPMOSH1501010CE E1 ...

Page 2: ...2 NN SE995S NN SD985S NN ST965S ...

Page 3: ...3 NN SE995S NN SD985S NN ST965S ...

Page 4: ...or 15 6 MEASUREMENTS AND ADJUSTMENTS 16 6 1 Adjustment of primary interlock switch secondary interlock switch and interlock monitor switch 16 6 2 Measurement of microwave output 16 7 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 17 7 1 Equipment 17 7 2 Procedure for measuring radiation leakage 17 7 3 Record keeping and notification after measurement 17 7 4 At least once a year have the radiatio...

Page 5: ...1 SCHEMATIC DIAGRAM 5 NN SE995S NN SD985S NN ST965S ...

Page 6: ...he DPC to determine operating conditions and output necessary to control PWM signal to the Inverter Power Supply for control of the output power 2 3 Inverter defrost When the Auto Control feature is selected and the Start pad is tapped 1 The digital programer circuit determines the power level and cooking time to complete cooking and indicates the operating state in the display window Table shows ...

Page 7: ...at is a quick and easy way to reheat refrigerated and room temperature foods Simply press the reheat pad There is no need to select power level and cooking time NOTE The Auto Sensor Reheat process is similar as Auto Sensor Cooking process Balance of cooking time T2 time The balance of cooking time which is called T2 time can be calculated by the following formula T2 time in sec T1 time X K factor ...

Page 8: ...uminum heat sink may be HOT due to heat energy therefore extreme care should be taken during servicing H V Inverter warning WARNING FOR INVERTER POWER SUPPLY U GROUNDING Check the High Voltage Inverter Power Supply circuit grounding The high voltage inverter power supply circuit board must have a proper chassis ground The inverter grounding plate must be connected to the chassis If the inverter bo...

Page 9: ... 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 holes or gaps because such objects may work as an antenna and cause microwave leakage 3 6 Verification after repair 1 After repair or replacement of parts make sure that the screws of the oven etc are neither loosen or missing Microwave energy might lea...

Page 10: ...and the magnetron to prevent microwave leakage CAUTION When replacing the magnetron be sure the antenna gasket is in place 4 2 Digital programmer circuit D P C CAUTION Be sure to ground any static electric charge built up in your body before handling the DPC 1 Disconnect all connectors from D P C 2 Remove 1 grounding screw 3 Remove 1 screw holding escutcheon base and slide the escutcheon base upwa...

Page 11: ...ice 4 5 Door assembly 1 Remove door C from door E by carefully pulling outward starting from upper right hand corner using a flat blade screwdriver 2 Separate door E from tabs on door A and remove door A 3 Open Door E at the opening angle of approximately 10 Note The door cannot be removed if the opening angle is greater than 10 4 Remove the door E from its hinges by pushing the door E upward and ...

Page 12: ...oving 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 in the 2 provided slots then screw the single tab to the base using a 4mm 6mm screw 4 7 Steam sensor 1 Disconnect connector CN2 from digital programmer circuit board 2 Disengage catch hooks on sensor cover C from orifice...

Page 13: ...because it is hot 1 Discharge high voltage charge 2 Remove the H V lead wire from magnetron terminals 3 Disconnect 2 connectors from CN701 CN702 on H V Inverter U 4 Remove 1 screw holding grounding plate to the base 5 Bend back 2 locking metal tabs on the base 6 Press 1 encircled locking tab and then slide 4 locking tabs of Inverter bracket at the bottom of the base in direction of arrows 7 Remove...

Page 14: ...ary Interlock Switch 0Ω Close Ω Open Secondary Interlock Switch 0Ω Close Ω Open Power Relay RL1 Ω Open Ω Open 5 2 Interlock Monitor Switch 1 Unplug lead wires from Inverter Power Supply U primary terminals 2 Connect test probes of ohm meter to the disconnected leads that were connected to Inverter Power Supply U 3 Test the continuity of Interlock Monitor Switch with door opened and closed position...

Page 15: ...Clock button twice b Press Start button once c Press Power Level button once For SE995S ST965S models a Press Clock button once b Press Timer button once c Press Start button once d Press Power Level button once 5 Program oven at High power for 1 minute and press Start pad a After approximately 3 seconds oven stops operating b During oven operation the input current is approximately 0 4A INPUT CUR...

Page 16: ...ircuit and all interlock switches again by following the component test procedures 6 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 liter beaker Glass thermometer W...

Page 17: ...use the 2 inch 5cm spacer supplied with the probe 4 Tap the start button or set the timer and with the magnetron oscillating measure the leakage by holding the probe perpendicular to the surface being measured 7 2 1 Measurement with the outer panel removed Whenever you replace the magnetron measure for radiation leakage before the outer panel is installed and after all necessary components are rep...

Page 18: ...7 4 At least once a year have the radiation monitor checked for calibration by its manufacturer 18 NN SE995S NN SD985S NN ST965S ...

Page 19: ...s 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 H97 H98 error code display If 3 times H97 or 2 times H98 exist microwave oven can not be used any more even if the defective parts already be replaced un plug and plug in again How to reset for the service Please take the following steps 1 Plug in oven 2 Press...

Page 20: ...y the control signals from DPC but magnetron is not oscillating 1 Magnetron 2 Loose lead wire connector CN703 3 H V Inverter U Oven stops in 10 seconds after pressing Start pad button Auto sensor cooking Steam sensor circuit is not functioning 1 Steam sensor 2 DPC 3 Open or loose wiring of sensor terminal from connector CN2 on DPC 2 No display and no operation at all Fuse is blown Most probably lo...

Page 21: ...ion of high voltage circuit especially magnetron filament circuit NOTE Large contact resistance will cause lower magnetron filament voltage and cause magnetron to have lower output and or be intermittent 3 Defective high voltage component H V Inverter Power Supply U Magnetron Check high voltage component according to component test procedure and replace if it is defective 4 Open or loose wiring of...

Page 22: ...s Clock button once press Timer button once press Start button once press Power Level button once For NN SD985S model press Timer Clock button twice press Start button once press Power Level button once Program unit for operation H95 H97 H98 H99 appears in display window a short time after Start pad is pressed and there is no microwave oscillation Alternate way to troubleshoot oven with AC Ampere ...

Page 23: ...llation at any power 1 IC1 pin 8 voltages while operation at high power Abnormal IC1 Normal 5V Step2 2 Collector of Q227 voltage Abnormal Q227 and or Q225 Q226 Q228 Normal 0 7V Step3 3 Short circuit between collector of Q227 and emitter of Q225 Still not turn on RL1 RL1 turns on Q227 and or Q225 Q226 Q228 H95 H97 H98 appears in window and oven stops operation Program High power for 1 minute and co...

Page 24: ...5V Step2 2 Collector of Q227 voltage Abnormal Q227 and or Q225 Q226 Q228 Normal 0 7V Step3 3 Short circuit between collector of Q227 and emitter of Q225 Still not turn on RL1 RL1 turns on Q227 and or Q225 Q226 Q228 Dark or unclear display 1 Replace display and check operation Normal Display Abnormal IC1 Missing or lighting of unnecessary segment 1 Replace IC1 and check operation Normal IC1 Abnorma...

Page 25: ...or of Q227 voltage Abnormal Q227 and or Q225 Q226 Normal 0 7V Step3 3 Short circuit between collector of Q227 and emitter of Q225 Still not turn on RL1 RL1 turns on Q227 and or Q225 Q226 Dark or unclear display 1 Replace display and check operation Normal Display Abnormal IC1 Missing or lighting of unnecessary segment 1 Replace IC1 and check operation Normal IC1 Abnormal Display H95 H97 H98 appear...

Page 26: ...ron wiring between Inverter and magnetron terminal 2 Between 1 0A and 2 0A Check continuity of D702 in Inverter PCB 1 D702 shorted Replace H V Inverter F606Y9X90AP 2 D702 is OK Replace magnetron Shut off in 3 seconds after Start 1 Less than 0 5A Check open circuit Interlock Switch DPC Power Relay and CN701 Replace defective component s or correct switch cables and connectors 8 6 H V INVERTER BOARD...

Page 27: ...8 7 How to check the semiconductors using an OHM meter 27 NN SE995S NN SD985S NN ST965S ...

Page 28: ...9 EXPLODED VIEW AND PARTS LIST 9 1 EXPLODED VIEW 28 NN SE995S NN SD985S NN ST965S ...

Page 29: ...00A5Y00AP FAN MOTOR 1 AC120V SINGLE PHASE 60Hz 18 F40084T00AP FAN BLADE 1 19 F4025BP20AP AIR GUIDE A 1 20 F40264T60APG AIR GUIDE B 1 21 F41445W00AP ORIFICE 1 22 F64508660AP SENSOR COVER B 1 24 F65434W00AP SENSOR COVER C 1 25 J607S4M00AP STEAM SENSOR 1 26 F612EBP20AP LAMP U 1 LED LAMP INSIDE 27 J61415G10XN MICRO SWITCH 1 PRIMARY INTERLOCK SWITCH 28 F61415U30XN MICRO SWITCH 1 SECONDARY INTERLOCK SWI...

Page 30: ...ion Pcs Set Remarks 56 F04467D00RP FUNCTION LABEL 1 SD985S 57 F0445BP20AP PICTO LABEL 1 SE995S 60 F0007BP30SRP NAME PLATE 1 SE995S 60 F0007BP10SRP NAME PLATE 1 SD985S 60 F0007BQ40SRP NAME PLATE 1 ST965S 30 NN SE995S NN SD985S NN ST965S ...

Page 31: ...T CABLE 1 SE995S D P CIRCUIT AU CN6 to D P CIRCUIT DU CN5 E5 F8057BP30BAP ESCUTCHEON BASE B 1 SE995S E6 F891PBP30SAP DOOR OPENING BUTTON U 1 SE995S E7 F82565W00AP DOOR OPENING LEVER 1 E8 F80375K00AP COOK BUTTON SPRING 1 E10 F90095X00AP GROUNDING PANEL 1 E16 F6616BL70CP FLAT CABLE 1 SE995S TOUCH SCREEN CN19 to D P CIRCUIT AU CN18 E17 F6616BL60CP FLAT CABLE 1 SE995S TOUCH SCREEN CN20 to D P CIRCUIT ...

Page 32: ...61 F603LBQ40RP D P CIRCUIT AU 1 ST965S E63 F800LBQ40SRP ESCUTCHEON BASE U 1 ST965S E66 F891PBP80SAP DOOR OPENING BUTTON U 1 ST965S E67 F82565W00AP DOOR OPENING LEVER 1 E68 F80375K00AP COOK BUTTON SPRING 1 E70 F90095X00AP GROUNDING PANEL 1 32 NN SE995S NN SD985S NN ST965S ...

Page 33: ...1 SD985S E104 F66164W20AP FLAT CABLE 1 SD985S E105 F8298BD70SAP BUTTON 1 SD985S E106 F891P4M60SCP DOOR OPENING BUTTON U 1 SD985S E107 F82565W00AP DOOR OPENING LEVER 1 E108 F80375K00AP COOK BUTTON SPRING 1 E110 F90095X00AP GROUNDING PANEL 1 E111 F83928P00KAP DIAL 1 SD985S E112 F8338BD70AP WATERPROOF SHEET 1 SD985S E113 F8126BK80BCP DISPLAY WINDOW 1 SD985S 33 NN SE995S NN SD985S NN ST965S ...

Page 34: ... F30186P40AG DOOR KEY A 1 D2 F302ABP30SAP DOOR A U 1 SE995S D2 F302ABP10SRP DOOR A U 1 SD985S D2 F302ABQ50SAP DOOR A U 1 ST965S D3 F302KBK10AP DOOR E U 1 D4 F30216P40AG DOOR KEY SPRING 1 D5 F3085BF30AP DOOR C 1 D6 F3145BD90AP DOOR SCREEN A 1 34 NN SE995S NN SD985S NN ST965S ...

Page 35: ... 5 WIRING MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030ABP10RP LEAD WIRE HARNESS 1 INCLUDING MAGNETRON THERMISTOR W2 F030E8W50AP H V LEAD WIRE 1 35 NN SE995S NN SD985S NN ST965S ...

Page 36: ...02BP30SRP PACKING CASE PAPER 1 SE995S P2 F0102BP10SRP PACKING CASE PAPER 1 SD985S P2 F0102BQ40SRP PACKING CASE PAPER 1 ST965S P3 F0104BP80AP UPPER FILLER 1 P4 F0105BP80AP LOWER FILLER 1 P5 F01067C50AP P E BAG 1 P6 F01074U00AP DOOR SHEET 1 P7 A06014M00AP COOKING TRAY 1 P10 F01924U00AP SHEET 1 P12 F0445BP10SRP OVERLAY 1 SD985S P12 F0445BQ40SRP OVERLAY 1 ST965S P13 F00166H70RP NOTICE 1 36 NN SE995S N...

Page 37: ...10 DIGITAL PROGRAMMER CIRCUIT 10 1 SCHEMATIC DIAGRAM NN SE995S 37 NN SE995S NN SD985S NN ST965S ...

Page 38: ...38 NN SE995S NN SD985S NN ST965S ...

Page 39: ...39 NN SE995S NN SD985S NN ST965S ...

Page 40: ...10 2 SCHEMATIC DIAGRAM NN ST965S 40 NN SE995S NN SD985S NN ST965S ...

Page 41: ...41 NN SE995S NN SD985S NN ST965S ...

Page 42: ...10 3 SCHEMATIC DIAGRAM NN SD985S 42 NN SE995S NN SD985S NN ST965S ...

Page 43: ...43 NN SE995S NN SD985S NN ST965S ...

Page 44: ...AP LCD HOLDER 1 F6752BP80AP DIFFUSION SHEET 1 VA1 D4EAY2710001 VARISTOR 1 270V IC1 MNBP8F50AAB L S I 1 IC10 C0DBGYY05981 IC 1 VOLTAGE STABILIZED IC25 C0DBBYY00073 IC 1 IC480 C0ABBA000230 IC 1 PC25 B3PAA0000302 IC 1 RL1 K6B1AYY00129 POWER RELAY 1 T10 G4DYA0000681 SWITCH POWER SUPPLY 1 120V FUSE1 K5G402YA0159 FUSE 1 4A 250V 10 4 3 NN SD985S Ref No Part No Part Name Description Pcs Set Remarks BZ210 ...

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