Panasonic NN-SM330M Service Manual Download Page 30 | Manualshive

Page: 30 / 32

background image

11 DIGITAL PROGRAMMER CIRCUIT

11.1. SCHEMATIC DIAGRAM (NN-ST340M, ST340W)

30

NN-ST340M / NN-ST340W / NN-SM330M / NN-SM330W / NN-SM320M

«
...
28
29
30
31
32
»

Summary of Contents for NN-SM330M

Page 1: ... Appliances Microwave Oven Shanghai Co Ltd 2010 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M HPE Hong Kong YPQ Singapore MPQ Malaysia TPE Thailand TTE Indonesia YTE Vietnam Microwave Oven ORDER NO PHAMOS1009068C3 ...

Page 2: ...2 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 3: ...N ST340M W 11 6 4 Fan motor 12 6 5 Door assembly 12 6 6 Turntable motor 14 7 COMPONENT TEST PROCEDURE 15 7 1 Primary Secondary Latch Switch Interlocks 15 7 2 Short Switch Monitor 15 7 3 High voltage transformer 15 7 4 High voltage capacitor 15 7 5 Magnetron 15 7 6 Diode 16 7 7 Variable power controller NN SM330M SM330W SM320M 16 7 8 Membrane keyboard Membrane switch assembly NN ST340M ST340W 16 8 ...

Page 4: ...1 FEATURE CHART 2 CONTROL PANEL 2 1 NN ST340M ST340W 4 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 5: ...2 2 NN SM330M SM330W SM320M 5 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 6: ...3 SCHEMATIC DIAGRAM 3 1 NN ST340M ST340W 6 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 7: ...3 2 NN SM330M SM330W SM320M 7 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 8: ...rogrammer circuit when the oven is set at any power selection except for High power position The digital programmer circuit controls the ON OFF time of power relay B contacts in order to vary the output power of the microwave oven from Low to High power One complete ON and OFF cycle of power relay B is 22 seconds The relation between indications on the control panel and the output of the microwave...

Page 9: ...malfunction of the short switch WARNING When the 10 Amp fuse is blown due to malfunction of the short switch replace all of the components Primary latch switch Secondary latch switch Short switch 1 This is mandatory Refer to Measurements and Adjustments for the location of these switches 2 When replacing the fuse confirm that it has the appropriate rating for these models 3 When replacing faulty s...

Page 10: ...ng 2 filament lead wires to the magnetron terminals be sure to connect the lead wires in the correct position The lead wire of high volatge transformer should be connected to FA terminal and the lead wire from high voltage capacitor should be connected to F terminal 6 2 Digital programmer circuit D P C Membrane switch NN ST340M W NOTE Be sure to ground any static electric charge built up on your b...

Page 11: ...alfunction or shorted contacts 6 3 Low voltage transformer and or power relays RY1 NN ST340M W NOTE Be sure to ground any static electric charge built up on your body before handling the D P C 1 Disconnect all connectors from D P C board 2 Remove 5 screws holding D P C board on escutcheon base 3 Replace D P C board A Using solder wick or a desoldering tool and 30W soldering iron carefully remove a...

Page 12: ...ice assy and detach the fan motor from orifice assy 6 5 Door assembly 1 Support the door remove 2 screws holding hinge A 2 Open the door remove door U and hinge A from cavity NOTE Support the door before opening 3 Remove door C from door A U door E by carefully pulling outward starting from upper right hand corner using a flat blade screwdriver 4 Separate door E from tabs on door A U and remove do...

Page 13: ...the cavity slot Then lower your finger to seat the door onto the hinge NOTE Door alignment is crucial If door is misaligned apply pressure until alignment is achieved NOTE Adjust so that the upper portion of the door will touch firmly to the oven cavity front plate without pushing the door If the door assembly is not mounted properly microwave power may leak from the clearance between the door and...

Page 14: ...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 the 2 tabs under the base into the 2 provided slots then screw the single tab to the base using a 4mm x 6mm screw 14 ...

Page 15: ...should be as follows 7 3 High voltage transformer 1 Remove connectors from the transformer terminals and check continuity 2 Normal cold resistance readings should be as follows Secondary winding Approx 195 Ω 240 Ω Filament winding Approx 0 Ω Primary winding Approx 0 Ω 3 Ω 7 4 High voltage capacitor 1 Check continuity of capacitor with meter on highest OHM scale 2 A normal capacitor will show conti...

Page 16: ...0M Isolate variable power switch from the circuit by disconnected 2 leads In order to check if variable power controllor is operating normally follow the test procedures below 1 Select any power other than High and start the oven 2 Check continuity between both terminals of the variable power switch 3 Variable power controller timer and variable power switch is working proporty it the ohm meter re...

Page 17: ...nt 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 voltage under load L...

Page 18: ...ad wire may be damaged or the connector cannot be removed 5 Do not touch any parts of the circuitry on the digital programmer circuit since static electric discharge may damage this control panel Always touch yourself to ground while working on this panel to discharge any static charge in your body 6 220V AC is present on the digital programmer circuit Terminals of power relay s and primary circui...

Page 19: ...19 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 20: ...erwise may result in a false reading or damage to your meter When disconnecting a plastic connector from a terminal you must hold the plastic connector instead of the lead wire and then disconnect it otherwise lead wire may be damaged or the connector cannot be removed Before troubleshooting operate the microwave oven following the correct operating procedures in the instruction manual in order to...

Page 21: ...been set and the start pad is tapped 1 IC1 pin 2 voltage while operation Abnormal IC1 Normal 3 3V Step2 2 Collector of Q223 voltage Abnormal Q223 Normal 0 7V RY2 No microwave oscillation at any power 1 IC1 pin 20 voltages while operation at high power Abnormal IC1 Normal 3 3V Step2 2 Collector of Q220 voltage Abnormal Q220 and or Q221 Q222 Q225 Q227 Normal 0 7V Step3 3 Short circuit between collec...

Page 22: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 22 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 23: ...LY SHAFT 1 SM330M W SM320M 8 F20349V00XP SUPPORTER 1 9 F290D9W00XP ROLLER RING U 1 ST340M W 9 F290D6S10XP ROLLER RING U 1 SM330M W SM320M 10 F30209V10XP DOOR HOOK 1 12 F31369V00XP HOOK LEVER A 1 14 F400A9V00XP FAN MOTOR 1 HPE YTE TPE TTE 14 F400A9W40YP FAN MOTOR 1 YPQ MPQ 15 F4008 1N00 FAN BLADE 1 16 F40259V00XP AIR GUIDE A 1 17 F41449V00XP ORIFICE 1 18 F612E7X50BP INCANDESCENT LAMP U 1 19 F61425U...

Page 24: ...T BODY 46 XTC4 10BFN SCREW 1 FOR CABINET BODY SIDE UPPER SIDE 47 XTTFL4 6BN SCREW 2 FOR CABINET BODY SIDE LOWER SIDE 48 F30069V00XP HINGE A 1 54 F60709V00XP INSULATION SHEET 1 55 XTWFA4 12LR SCREW 2 HINGE A 57 F0005 6S10 EARTH LABEL 1 TTE 58 F00066V00HP CAUTION LABEL 1 59 F00066W10MP CAUTION LABEL 1 YPQ 59 F00068H00YT CAUTION LABEL 1 YTE 60 F02849V30SYP NO LABEL 1 ST340M YPQ 60 F02849V20SYP NO LAB...

Page 25: ...30YP D P CIRCUIT AU 1 ST340M YPQ MPQ E1 F603L9V30YT D P CIRCUIT AU 1 ST340M YTE TTE E2 F630Y9V30BHP MEMBRANE SWITCH 1 ST340W E2 F630Y9V30BYT MEMBRANE SWITCH 1 ST340M E3 F80349V30HHP ESCUTCHEON BASE 1 ST340W E3 F80349V30SHP ESCUTCHEON BASE 1 ST340M E5 F81279V30AP BACK PLATE 1 ST340M W E6 F66139V30HP BACKSTOP 1 ST340M W 25 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 26: ...80349V20HHP ESCUTCHEON BASE 1 SM330W E11 F80349V10SYT ESCUTCHEON BASE 1 SM320M E12 F60019V00XP TIMER 1 SM330M W SM320M E13 F80209V00SXP TIMER KNOB 1 SM330M SM320M E13 F80209V00HXP TIMER KNOB 1 SM330W E14 F83929V00SXP TIMER KNOB 1 SM330M SM320M E14 F83929V00HXP TIMER KNOB 1 SM330W 26 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 27: ...0189V00XP DOOR KEY A 1 D2 F302A9V00HXP DOOR A U 1 ST340W SM330W D2 F302A9V00SXP DOOR A U 1 ST340M SM330M SM320M D3 F302K9V00XP DOOR E U 1 D4 F30215G10XN DOOR KEY SPRING 1 D5 F30859V00XP DOOR C 1 D6 F31459W00XP DOOR SCREEN A 1 27 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 28: ...G MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030A9V30HP LEAD WIRE HARNESS 1 ST340M W W1 F030A9V00XP LEAD WIRE HARNESS 1 SM330M W SM320M 28 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 29: ... P2 F01029V20SYT PACKING CASE PAPER 1 SM330M YPQ MPQ YTE P2 F01029V20STP PACKING CASE PAPER 1 SM330M TPE P2 F01029V20HHP PACKING CASE PAPER 1 SM330W HPE P2 F01029V10SYT PACKING CASE PAPER 1 SM320M YTE TTE P3 F01049V00XP UPPER FILLER 1 P4 F01059V00XP LOWER FILLER 1 P5 F01068100XN P E BAG 1 P6 F01075G10XN DOOR SHEET 1 P7 F06019W00XP COOKING TRAY 1 ST340M W P7 F06016D00XN COOKING TRAY 1 SM330M W P7 A...

Page 30: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM NN ST340M ST340W 30 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 31: ...31 NN ST340M NN ST340W NN SM330M NN SM330W NN SM320M ...

Page 32: ...7 D4EAY112A036 ZENER RESISTOR 2 1100V IC1 MN101C78ALA1 L S I 1 IC350 C0EBE0000401 IC 1 Q10 B1BAAJ000003 TRANSISTOR 1 R211 D0AE102JA155 CARBON FILM RESISTOR 1 1KΩ 1 4W 5 R11 D0AE202JA155 CARBON FILM RESISTOR 1 2KΩ 1 4W 5 R237 D0AE201JA155 CARBON FILM RESISTOR 1 200Ω 1 4W 5 R225 D0AE910JA155 CARBON FILM RESISTOR 1 91Ω 1 4W 5 R228 R352 D0AE104JA155 CARBON FILM RESISTOR 2 100KΩ 1 4W 5 RY1 K6B1AGA00258...

Reviews:

No comments

Related manuals for NN-SM330M

Brand: Garland Pages: 32

Brand: Garland Pages: 2

Brand: Garland Pages: 32

Brand: Lakeland Pages: 25

Brand: Atag Pages: 76

Brand: Monogram Pages: 84

Brand: Daewoo Pages: 35

Brand: Cafe Pages: 52

Brand: NEFF Pages: 32

Brand: L2G Pages: 49

Brand: Kasanova Pages: 62

Brand: Jenn-Air Pages: 8

Brand: GE Pages: 48

Brand: Magic Chef Pages: 31

Brand: Progress Pages: 60

Brand: NEFF Pages: 24

Brand: Abt Pages: 20

Brand: Diamond Pages: 11

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands