Panasonic NN-GD351W Service Manual Download Page 2 | Manualshive

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NN-GD371S / NN-GD361M / NN-GD351W

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Summary of Contents for NN-GD351W

Page 1: ... Panasonic Home Appliances Microwave Oven Shanghai Co Ltd 2011 NN GD371S NN GD361M NN GD351W BPQ U K EPG Continental Europe WPG Switzerland Microwave Oven ORDER NO PHAMOS1106061CE ...

Page 2: ...2 NN GD371S NN GD361M NN GD351W ...

Page 3: ...3 NN GD371S NN GD361M NN GD351W ...

Page 4: ...rter Power Supply 14 7 COMPONENT TEST PROCEDURE 16 7 1 Primary Secondary Latch Switch interlocks Power Relay RY1 16 7 2 Short switch monitor 16 7 3 Magnetron 16 7 4 DC fan motor 16 7 5 Inverter power supply U 17 7 6 Temperature thermistor 17 8 MEASUREMENTS AND ADJUSTMENTS 18 8 1 Adjustment of Primary latch switch Secondary latch switch and Short switch 18 8 2 Measurement of microwave output 18 9 T...

Page 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN GD371S NN GD361M NN GD351W ...

Page 6: ...3 SCHEMATIC DIAGRAM 6 NN GD371S NN GD361M NN GD351W ...

Page 7: ...ave doubler voltage rectifier circuit consisting of the H V diodes and capacitors generates the necessary 4 000V DC needed for the magnetron 5 Output power of the magnetron tube is always monitored by the signal output from the current transformer built into the inverter circuit 6 This signal is fed back to the microcomputer in the DPC to determine operating conditions and output necessary to cont...

Page 8: ...circuit grounding The high voltage inverter power supply circuit board must have a proper chassis ground The inverter grounding bracket must be connected to the chassis If the inverter board is not grounded it will expose the user to very high voltages and cause extreme DANGER Be sure that the inverter circuit is properly grounded via the inverter earth bracket WARNING DISCHARGE THE HIGH VOLATGE C...

Page 9: ...r 1 After repair or replacement of parts make sure that the screws of the oven etc are neither loose nor missing Microwave energy might leak if screws are not properly tightened 2 Make sure that all electrical connections are tight before inserting the plug into the wall outlet 3 Check for microwave energy leakage CAUTION OF MICROWAVE RADIATION LEAKAGE USE CAUTION NOT TO BECOME EXPOSED TO RADIATIO...

Page 10: ... 2 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 CAUTION When replacing the magnetron be sure the antenna gasket is in place 6 2 Digital programmer circuit D P C CAUTION Be sure to ground any static electric charge built up in your body before han...

Page 11: ...relays NOTE Do not use a soldering iron or desoldering tool of more than 30 watts on D P C contacts 2 With all the terminal pins cleaned and separated from D P C contacts remove the defective transformer power relays Replace components making sure all terminal pins are inserted completely resolder all terminal contacts carefully 6 4 DC fan motor 1 Disconnect DC fan motor connect CN15 from DPC boar...

Page 12: ...semble it properly and adjustment so as to prevent an excessive microwave leakage Adjustment of the door assembly Refer page 18 7 Place the hole of hinge A into the door s upper hinge pin 8 Use your left index finger to support the door s lower hinge pin while guiding the door s hinge A into the cavity slot Then lower your finger to seat the door onto the hinge NOTE Door alignment is crucial If do...

Page 13: ...removing the motor cover be sure that cut portions are properly trimmed off or bent to the inside so that no sharp edges will be exposed to outside 2 Disconnect 2 lead wires connected to the turntable motor 3 Remove the turntable motor by removing 1 screw NOTE After reinstalling the new turntable motor and reconnecting the 2 lead wires reinstall the motor cover by rotating it around 180 tucking th...

Page 14: ...by pulling it out from the cavity left side 6 8 H V Inverter Power Supply 1 Disconnect 2 high voltage lead wires from magnetron filament terminals 2 Unplug connector CN701 CN702 from H V Inverter board 3 Remove 1 screw holding gro unding plate on the base 4 Remove 1 screw holding inverter bracket on the base 5 Slide 2 locking tabs of inverter bracket at the bottom of the base in direction of arrow...

Page 15: ...6 Remove 2 screws holding H V inverter on the inverter bracket 15 NN GD371S NN GD361M NN GD351W ...

Page 16: ...h monitor 1 Unplug lead wires from Inverter Power Supply U primary terminals 2 Connect test probes of ohm meter to the disconnected leads which were connected to Inverter Power Supply U 3 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 0Ω Close Ω Open 7 3 Magnetron ...

Page 17: ... supply cord into outlet 4 Program DPC a Press Clock button once b Press Delay Stand button once c Press Start button once d Press Micro Power button once 5 Program oven at High power for 1 minute and press Start button a After approximately 3 seconds oven stops operating b During oven operation the input current is approximately 0 4A INPUT CURRENT FAILURE CODE Unplug CN701 0 4A Oven stops in 3 se...

Page 18: ...owing the component 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 liter beaker Glass thermometer Wrist watch or stopwatch NOTE Check the line vol...

Page 19: ... control panel Always touch ground while working on this panel to discharge any static charge in your body 7 230 240V AC is present on the digital programmer circuit Terminals of power relay s and primary circuit of Digital Programmer Circuit When troubleshooting be cautious of possible electrical shock hazard Before troubleshooting operate the microwave oven following the correct operating proced...

Page 20: ...d 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 power relay RY1 5 Defective primary latch switch 6 Defective DPC or power relay RY1 Refer to DPC troubleshooting 5 Oven can program but timer...

Page 21: ... program the DPC into TEST MODE press Clock button once press Delay Stand button once Press Start button once press Micro Power button once Program unit for operation H95 H97 H98 H99 appears in display window a short time after Start button 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...

Page 22: ...edure Power will Ammeter reading is To do Remedy Shut off in 23 seconds after Start 1 Between 0 5A and 1 0A Check and repair open magnetron circuit Open magnetron 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 Z606YBA00GP 2 D702 is OK Replace magnetron Shut off in 3 seconds after Start 1 Less than ...

Page 23: ...DC C702 ZCWF4305N851 FILM CAPACITOR 1 3µF 250VDC DB701 Z0FBBQ000006 RECTIFIER BRIDGE 1 L701 Z5020W100AP CHOKE COIL 1 R702 Z0CM562JA002 SAND BAR RESISTOR 1 T701 Z609ABA00GP TRANSFORMER 1 INCLUDING D701 D702 C706 C707 D701 D702 Z0FBAZ000003 DIODE 2 C706 Z0C3F562A002 FILM CAPACITOR 1 5600PF 3KV C707 Z0C3F822A002 FILM CAPACITOR 1 8200PF 3KV 23 NN GD371S NN GD361M NN GD351W ...

Page 24: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 24 NN GD371S NN GD361M NN GD351W ...

Page 25: ...NDARY LATCH SWITCH 21 Z61785U30XN SHORT SWITCH 1 SHORT SWITCH 22 Z2M236 M36R MAGNETRON 1 23 Z606YBA00GP H V INVERTER U 1 24 Z6585BA00EP INVERTER BRACKET 1 25 Z66629W40HP GROUNDING PLATE 1 27 Z62306V60BP FUSE 1 10A 29 Z63269W00XP TURNTABLE MOTOR 1 30 Z900C9V20HP AC CORD W PLUG 1 BPQ 30 Z900C9V20ZP AC CORD W PLUG 1 EPG 30 Z900CBB10WP AC CORD W PLUG 1 WPG 31 Z61456N60AP THERMAL CUTOUT 1 150 C OPEN 20...

Page 26: ...PQ E3 Z800LBB10SEP ESCUTCHEON BASE U 1 GD371S EPG GD371S WPG E4 Z891PBA00SEP DOOR OPENING BUTTON U 1 GD371S E5 Z8256BA00EP DOOR OPENING LEVER 1 E6 Z80375K00AP COOK BUTTON SPRING 1 E7 Z9009BA00EP GROUNDING PANEL 1 GD371S E8 Z803GBA00SEP POP OUT DIAL U 1 GD371S E9 Z8018BA00EP DIAL SUPPORT 1 E10 Z8298BA10KBP BUTTON 1 GD371S E13 Z66168J00XP FLAT CABLE 1 E15 Z0007BB10SBP NAME PLATE 1 GD371S BPQ E15 Z00...

Page 27: ...26 Z80375K00AP COOK BUTTON SPRING 1 E28 Z803G9M60SBP POP OUT DIAL U 1 GD361M E28 Z803G9M60HBP POP OUT DIAL U 1 GD351W E29 Z8018BA00EP DIAL SUPPORT 1 E30 Z8298BA10SBP BUTTON 1 GD361M E30 Z8298BA10HBP BUTTON 1 GD351W E33 Z66168J00XP FLAT CABLE 1 E34 Z8126BB10EP DISPLAY WINDOW 1 GD361M GD351W E35 Z0007BB30SEP NAME PLATE 1 GD361M EPG E35 Z0007BB40HEP NAME PLATE 1 GD351W EPG E36 Z8127BA10BP BACK PANEL ...

Page 28: ...1 Z30189V00XP DOOR KEY A 1 D3 Z302KBA00EP DOOR E U 1 D4 Z30215G10XN DOOR KEY SPRING 1 D5 Z30859V00XP DOOR C 1 D6 Z3145BB10EP DOOR SCREEN A 1 D8 Z302ABB10SEP DOOR A U 1 GD371S D8 Z302ABB30SEP DOOR A U 1 GD361M D8 Z302ABB40HEP DOOR A U 1 GD351W 28 NN GD371S NN GD361M NN GD351W ...

Page 29: ...10 5 WIRING MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 Z030ABB10BP LEAD WIRE HARNESS 1 W2 Z030EBA00EP H V LEAD WIRE 1 29 NN GD371S NN GD361M NN GD351W ...

Page 30: ...SE PAPER 1 GD361M P2 Z0102BB40HEP PACKING CASE PAPER 1 GD351W P3 Z01049V00XP UPPER FILLER 1 P4 Z01059V00XP LOWER FILLER 1 P5 Z01068100XN P E BAG 1 P6 Z01075G10XN DOOR SHEET 1 P7 Z0601BA00EP COOKING TRAY 1 P8 Z01924T00AP SHEET 1 P9 Z01085G50XN RACK PACKING 1 BPQ P9 Z0108BB10EP RACK PACKING 1 EPG WPG P10 Z060V8H00BP OVEN RACK 1 P11 Z10855R00BP PIZZA PAN HANDLE 1 EPG WPG P12 Z01565U50EP NOTICE 1 EPG ...

Page 31: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM 31 NN GD371S NN GD361M NN GD351W ...

Page 32: ...32 NN GD371S NN GD361M NN GD351W 06 11 S BB1 S BB3 S BB4 Printed in China ...

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