Panasonic NN-SE284B Service Manual Download Page 1

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Panasonic

Appliances

Microwave

Oven

(Shanghai) Co., Ltd. 2013.

NN-SE284S
NN-SE284B
NN-SE284W

CPH(CANADA)

Microwave Oven

Please file and use this manual together with the service manual for Model NN-S262SF (Order
No.SIMMC0203005C1)

ORDER NO.PAPMOSH1312046SE

Summary of Contents for NN-SE284B

Page 1: ...icrowave Oven Shanghai Co Ltd 2013 NN SE284S NN SE284B NN SE284W CPH CANADA Microwave Oven Please file and use this manual together with the service manual for Model NN S262SF Order No SIMMC0203005C1 ORDER NO PAPMOSH1312046SE ...

Page 2: ...2 NN SE284S NN SE284B NN SE284W ...

Page 3: ...3 NN SE284S NN SE284B NN SE284W ...

Page 4: ...interlock switch and interlock monitor switch 12 5 2 Measurement of microwave output 12 6 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 13 6 1 Equipment 13 6 2 Procedure for measuring radiation leakage 13 6 3 Record keeping and notification after measurement 13 6 4 At least once a year have the radiation monitor checked for calibration by its manufacturer 14 7 TROUBLESHOOTING GUIDE 15 7 1 Troub...

Page 5: ...1 SCHEMATIC DIAGRAM 5 NN SE284S NN SE284B NN SE284W ...

Page 6: ... back to the microcomputer in the 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 ...

Page 7: ...wing tables along with the P1 and P2 powers NOTE When More or Less pad is selected the K factor varies resulting in T2 time to be increased or decreased Example of calculating the T2 time Example 1 If the T1 time is measured to be 2 minutes and 40 seconds and the Auto program selected is Oatmeal T2 T1 K 2 min and 40 sec 0 1 160sec 0 1 16 sec Category P1 Power P2 Power K Factor Standard Oatmeal Pow...

Page 8: ...dinary use extreme care should be taken during repair The aluminum heat sink is also energized with high voltage HOT do not touch when the AC input terminals are energized The power device Collector is directly connected to the aluminum heat sink The aluminum heat sink may be HOT due to heat energy therefore extreme care should be taken during servicing H V Inverter warning WARNING FOR INVERTER PO...

Page 9: ...switches 2 When replacing the fuse confirm that it has the appropriate rating for these models 3 When replacing faulty switches be sure the mounting tabs are not bent broken or deficient in their ability to hold the switches 3 5 Avoid inserting nails wire etc through any holes in the unit during operation Never insert a wire nail or any other metal object through the lamp holes on the cavity or an...

Page 10: ...ary Interlock Switch 0Ω Close Ω Open Secondary Interlock Switch 0Ω Close Ω Open Power Relay RY1 Ω Open Ω Open 4 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 11: ...Unplug the oven s AC power supply cord from outlet 2 Unplug 3 pin connector CN701 CN703 remains unplugged 3 Plug in the oven s AC power supply cord into outlet 4 Program DPC a Press Timer Clock pad twice b Press Start pad once c Press Power Level pad 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 i...

Page 12: ...ircuit and all interlock switches again by following the component test procedures 5 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 13: ...ays use the 2 inch 5cm spacer supplied with the probe 4 Tap the Start pad or set the timer and with the magnetron oscillating measure the leakage by holding the probe perpendicular to the surface being measured 6 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 re...

Page 14: ...6 4 At least once a year have the radiation monitor checked for calibration by its manufacturer 14 NN SE284S NN SE284B NN SE284W ...

Page 15: ...e 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 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...

Page 16: ...he 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 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 loose connec...

Page 17: ...ction 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 ...

Page 18: ...normal IC1 Normal 5V Step2 2 Collector of Q220 voltage Abnormal Q220 and or Q225 Q226 Q227 Normal 0 7V Step3 3 Short circuit between collector of Q220 and emitter of Q225 Still not turn on RL1 RY1 turns on Q220 and or Q225 Q226 Q227 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 ...

Page 19: ... H99 First you must program the DPC into TEST MODE press Time Clock pad twice Press Start pad once press Power Level pad 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 meter used H95 H97 H98 H99 appears in display window a short time after Start...

Page 20: ...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 7 6 H V INVERTER BOARD...

Page 21: ...8 EXPLODED VIEW AND PARTS LIST 8 1 EXPLODED VIEW 21 NN SE284S NN SE284B NN SE284W ...

Page 22: ...MOTOR B 1 FOR MAGNETRON COOLING 22 F601L6F00AP SENSOR BU 1 23 F40246Z00AP EXHAUST GUIDE A 1 24 F44775H00AP EXHAUST GUIDE 1 25 F20025H00AP RACK SUPPORT 4 26 F65856Z00AP INVERTER BRACKET 1 27 F62386Z00AP WASHER 1 28 F62386F00AP WASHER 1 32 F100T5H00APG BACK PLATE BU 1 33 F400BBL60CP FILTER U 2 34 F400K5H00APG EXHAUST ADAPTER 1 35 F63175H10BAP LAMP HOLDER 1 SE284S SE284B 35 F63175H10HAP LAMP HOLDER 1...

Page 23: ...NG PLATE 1 87 A66135H00AP BRACKET A 3 88 F0334BL70CP MENU LABEL 1 92 F40316Z00APG AIR BAFFLE C 1 93 F00067C50CP CAUTION LABEL 1 94 F62315G10XN FUSE HOLDER 1 95 XTCHNE4 12BB SCREW 4 SE284S SE284B 95 XTCHNE4 12BC SCREW 4 SE284W 96 TCTTH4 10BCB SCREW 3 SE284S SE284B 96 TCTTH4 10BC SCREW 3 SE284W 99 F605S9X00CP D P CIRCUIT HU 1 COOKTOP LAMP LED INSIDE 100 F67269X00CP REFLECTOR 1 101 F81279X00CP COOKTO...

Page 24: ...DOOR KEY A 1 D2 F302ABL60SCP DOOR A U 1 SE284S D2 F302ABL70BCP DOOR A U 1 SE284B D2 F302ABL70HCP DOOR A U 1 SE284W D3 F302K5H00AP DOOR E U 1 D4 F30215G10XN DOOR KEY SPRING 1 D5 F30855H00AP DOOR C 1 D6 F31455H00AP DOOR SCREEN A 1 D7 F04114180CP HC LABEL 1 24 NN SE284S NN SE284B NN SE284W ...

Page 25: ... PIN FROM D P C AU CN10 TO D P C DU CN11 E6 F891PBL60SCP DOOR OPENING BUTTON U 1 SE284S E7 F82566F00AP DOOR OPENING LEVER 1 E8 F80375950AP COOK BUTTON SPRING 1 E10 F3316BL60CP GROUNDING PANEL 1 SE284S E11 F6616BL60CP FLAT CABLE 1 SE284S 10 PIN FROM D P C MU CN20 TO D P C AU CN21 E12 F6616BL70CP FLAT CABLE 1 8 PIN FROM D P C MU CN19 TO D P C AU CN18 E15 F0007BL60SCP NAME PLATE 1 SE284S E16 XTWBFE4 ...

Page 26: ... TO D P C DU CN11 E25 F800BBL70BCP ESCUTCHEON BASE BU 1 SE284B E25 F800BBL70HCP ESCUTCHEON BASE BU 1 SE284W E26 F8072BL70BCP DOOR OPENING BUTTON 1 SE284B E26 F8072BL70HCP DOOR OPENING BUTTON 1 SE284W E27 F82566F00AP DOOR OPENING LEVER 1 E28 F80375950AP COOK BUTTON SPRING 1 E32 F6616BL70CP FLAT CABLE 1 8 PIN FROM D P C MU CN19 TO D P C AU CN18 E35 F0007BL70BCP NAME PLATE 1 SE284B E35 F0007BL70HCP N...

Page 27: ...075H00AP DOOR SHEET 1 P7 A06015H00AP COOKING TRAY 1 P8 F01175H00AP TRAY PACKING B 1 P9 F01485H00AP REINFORCE BRACKET 2 P10 F01085H00AP TRAY PACKING 1 P11 F01928Q00SAP SHEET 1 SE284S P11 F01926Z20AP SHEET 1 SE284B P11 F01925H00AP SHEET 2 SE284W P12 F06025H00AP OVEN RACK 1 P13 F02185H00AP PROTECTOR PACKING 1 P14 F03138Q00CP INSTALLATION INSTRUCTION 1 P15 F04318Q00CP UPPER CABINET TEMPLATE 1 P16 F011...

Page 28: ...er Motor Noise Filter U D P C RY1 etc W2 F030E5H00CP H V LEAD WIRE 1 Magnetron to CN702 of H V Inverter W3 F03536F00AP LEAD WIRE HARNESS U 1 INCLUDING 5 PIN CONNECTOR CN4 Connect to Secondary Interlock Switch etc W4 F0355BL60CP LEAD WIRE HARNESS 1 Connect to Turntable Motor Cooktop Lamps etc W5 F0354BL60CP LEAD WIRE HARNESS 1 Connect to Stirrer Motor 3 Thermal Cutouts Top oven lamp LED W6 F03569X0...

Page 29: ...9 DIGITAL PROGRAMMER CIRCUIT 9 1 SCHEMATIC DIAGRAM 29 NN SE284S NN SE284B NN SE284W ...

Page 30: ...30 NN SE284S NN SE284B NN SE284W ...

Page 31: ... SHEET 1 D30 B0EDKR000014 BRIDGE DIODE 1 D32 D4EAY2710001 ZENER RESISTOR 1 270V ZD10 ZD11 DZ2J062M0L ZENER DIODE 2 ZD12 DZ2J068M0L ZENER DIODE 1 IC1 MNBL6F29AAC L S I 1 IC10 C0DBGYY03746 IC 1 IC42 B1HBGFF00007 IC 1 IC380 C3EBDC000063 IC 1 IC25 IC27 B3PAA0000302 IC 2 IC26 MIP2K30MSSCF IC 1 IC220 B1HBGFF00007 IC 1 IC380 C3EBDC000063 IC 1 IC501 C0ABBA000230 IC 1 RL1 K6B1AYY00129 POWER RELAY 1 RL3 RL7...

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