Panasonic NN-K593MF Service Manual Download Page 23

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9.4. How to check the semiconductors using an OHM meter

INVERTER BOARD PARTS LIST (F606Y4V00XN)

Ref. No.

Part No.

Part Name & Description

Pcs/Set

Remarks

C701

AECQ2G104JC1

CAPACITOR

0.1µF , 500VDC

C702

ECQE2405T847

CAPACITOR

4µF , 250VDC

C703

AECQ2H454JC3

CAPACITOR

0.45µF , 500VDC

C704 , C705

ECWH30822JUA

CAPACITOR

8200PF, 3000VDC

CN701

AEEMXH00703G

CONNECTOR

D701 , D702

A62024V00GP

DIODE SI

0.3A

D703

AESSRCT1H7-E

DIODE SI

D704, D705

AESSRCT1A6-E

DIODE SI

D706

AESS133T-77

DIODE SI

MA196, 0.1A

DB701

AESTRS2006M

DIODE SI

20A, 600V

XTWA3+12B

SCREW

3*12 (FOR DB701, Q701)

XTNA3+12B

SCREW

3*12 (FOR Q702)

H.S.

F66914V00XN

HEAT SINK

IC702 , IC703

AEICP25011HL

IC801

AN9DB07SB-E1

L701

F50204V00XN

CHOKE COIL

Q701

A691E4V10GP

TRANSISTOR SI

Q702

TRANSISTOR SI

C806

CAPACITOR

56PF TRANSISTOR(Q701, Q702) KIT

Q703, Q704

2SC2785TFK

TRANSISTOR SI

Q705

2SA1175TFK

TRANSISTOR SI

R715

AERGRY15J452

RESISTOR

4.5K

Ω

, 15W

VR701

AEVTZ6TLT102

VARIABLE RESISTOR

Ω

, 30%

ZD701, ZD703, ZD704, ZD705

AESZMTZJ10B

ZENER DIODE SI

ZD702

AESZMTZJ12C

ZENER DIODE SI

T701

F609A4V00XN

H.V. TRANSFORMER

PBF

CT701

F66904V00XN

CURRENT TRANSFORMER

NN-S453WF

Summary of Contents for NN-K593MF

Page 1: ...f law NN S453WF NN S553WF NN K593MF NN K573MF NN K573WF NN K543WF QPQ Australia New Zealand HPE Hong Kong YPQ Singapore MPQ Malaysia TPE Thailand Indonesia LPK Philippines YTE Others KTE UAE Egypt PTE Iran KPQ Kuwait Doha Qatar Oman Bahrain Pakistan STM Saudi Arabia ZPE CIS Countries Microwave Oven ORDER NO SIMMC0306022C3 ...

Page 2: ...2 NN S453WF ...

Page 3: ...3 NN S453WF ...

Page 4: ...EDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 18 9 TROUBLESHOOTING GUIDE 19 10 EXPLODED VIEW AND PARTS LIST 24 11 PARTS LIST 25 12 DOOR ASSEMBLY 26 13 WIRING MATERIALS 26 14 ESCUTCHEON BASE ASSEMBLY 27 15 PACKING AND ACCESORIES 29 16 DIGITAL PROGRAMMER CIRCUIT NN S453WF S553WF 30 17 DIGITAL PROGRAMMER CIRCUIT NN K593MF 32 18 DIGITAL PROGRAMMER CIRCUIT NN K573 K543WF 34 19 DIGITAL PROGRAMMER CIRCUIT...

Page 5: ...1 SCHEMATIC DIAGRAM NN S453WF NN S553WF 5 NN S453WF ...

Page 6: ...2 SCHEMATIC DIAGRAM NN K593MF K573 K543WF 6 NN S453WF ...

Page 7: ...called IGBT These devices will be switched ON OFF by the 20 to 40 KHz PWM pulse width modulation signal from the microcomputer in the DPC 3 This drives the High voltage transformer to increase up to 2 000V AC and approximately 3V AC by means of transformer 4 Then the half wave doubler voltage rectifier circuit consisting of the H V diodes and Capacitors generates the necessary 4 000V DC needed for...

Page 8: ...igh 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 Grounding of the inverter circuit board WARNING DISCHARGE T...

Page 9: ...r replacement of parts make sure that the screws of the oven etc are neither loose nor missing Microwaves 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 Refer to procedure for measuring microwave energy leakage CAUTION MICROWAVE RADIATION USE CAUTION NOT TO BEC...

Page 10: ...y 3 Remove 1 screw holding D P C 4 Release lock of connector CN6 by pushing both levels to inside and pull them upward and remove flat cable of membrane keyboard 5 Separate D P C board from tabs on the escutcheon base and remove D P C board To replace membrane key board 6 Push the upper part of key board display window portion from back of escutcheon base and peel off escutcheon sheet and membrane...

Page 11: ...move fan blade from the fan motor shaft by pulling it straight out 5 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 Remo...

Page 12: ...emoving screw NOTE After replacing the new turntable motor and reconnecting the two lead wires reinstall the motor cover by rotating it 180 tucking the tabs into the base in the 2 provided slots then screw the single tab to the base using a 4mm X 6mm screw not provided 5 7 Steam sensor 1 Disconnect connector CN2 from digital programmer circuit board 2 Disengage catch hooks on sensor cover c from o...

Page 13: ...5 8 Quartz heater For Grill Models 1 Disconnect lead wires from heater terminals 2 Remove 2 screws holding heater supports 3 Remove the heater by pulling it out 13 NN S453WF ...

Page 14: ...wire to the aluminum heat sink because it is hot 1 Discharge high voltage charge 2 Remove the 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 lead wire 5 Remove 2 screws holding Inverter bracket to the base 6 Slide 2 locking tabs of Inverter bracket at the bottom of the base in direction of arrows 7 Remove 2...

Page 15: ...nplug 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 6 3 Magnetron Continuity checks can only indicate an open filament ...

Page 16: ...am oven at High power for 1 minute and press start a After approximately 23 seconds oven stops b During oven operation input current is approximately 0 5 to 1A INPUT AMPERE FAILURE CODE Unplug CN703 0 5 to 1A Oven stops in 23 seconds after started If both a and b are OK proceed to test 2 Test2 Continued from Test 1 1 Unplug 3 pin connector CN701 CN703 remains unplugged 2 Program oven at High power...

Page 17: ...g the component test procedures on P 15 7 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...

Page 18: ...akage always 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 8 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 componen...

Page 19: ... 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 procedures in the instruction manual in order to find ...

Page 20: ... filament voltage and cause magnetron to have lower output and or have intermittent Adjust door and latch switches 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 B RY 1 5 Defective primary latch switch 6 Defective DPC or power relay B RY ...

Page 21: ... explains failure codes of H97 H98 and H99 First you must program the DPC by pressing Clock Timer Start Micro Power Program unit for operation H97 H98 H99 appears in display window a short time after start key is pressed and there is no microwave oscillation Alternate way to troubleshoot oven with AC Ampere meter used H97 H98 H99 appears in display window a short time after start key is pressed an...

Page 22: ... between collector and Emitter of Q223 Still does not turn on RY 2 For NN S453WF S553WF RY 2 turns on Q223 Power relay A RY 2 does not turn on even though the program has been set and the start pad is tapped 1 IC 1 pin 41 voltage while operation Abnormal IC 1 Normal 5V Step 2 2 Short circuit between collector and Emitter of Q223 Still does not turn on RY 2 For NN K593MF K573MF K573WF K543WF RY 2 t...

Page 23: ...I 1 MA196 0 1A DB701 AESTRS2006M DIODE SI 1 20A 600V XTWA3 12B SCREW 2 3 12 FOR DB701 Q701 XTNA3 12B SCREW 1 3 12 FOR Q702 H S F66914V00XN HEAT SINK 1 IC702 IC703 AEICP25011HL IC 2 IC801 AN9DB07SB E1 IC 1 L701 F50204V00XN CHOKE COIL 1 Q701 A691E4V10GP TRANSISTOR SI 1 Q702 TRANSISTOR SI 1 C806 CAPACITOR 1 56PF TRANSISTOR Q701 Q702 KIT Q703 Q704 2SC2785TFK TRANSISTOR SI 2 Q705 2SA1175TFK TRANSISTOR ...

Page 24: ...10 EXPLODED VIEW AND PARTS LIST 24 NN S453WF ...

Page 25: ...RO SWITCH 1 KW3 0D A 474 SECONDARY LATCH SWITCH 28 F61785U30XN MICRO SWITCH 1 KW3 0T A 375 SHORT SWITCH 29 2M261 M32F MAGNETRON 1 EXCEPT QPQ STM ZPE 29 2M261 M32G MAGNETRON 1 QPQ STM ZPE 31 A62304210BP FUSE 1 10A 33 J692Y4T00YN NOISE FILTER U 1 EXCEPT QPQ STM ZPE 33 J607X4L00BP NOISE FILTER U 1 QPQ STM ZPE 34 F63265U30XN TURNTABLE MOTOR 1 35 F900C5G10QP AC CORD W PLUG 1 QPQ 35 F900C5Q00YK AC CORD ...

Page 26: ...30855Q00AP DOOR C 1 D6 F31454T00AP DOOR SCREEN A 1 S453WF S553WF D7 F31465Q00BAP DOOR SCREEN B 1 S453WF D7 F31465Q00HP DOOR SCREEN B 1 S553WF D7 F31465R90HP DOOR SCREEN B 1 K593MF K573MF WF K543WF D8 F01729660JP CAUTION LABEL B 1 S453WF 13 WIRING MATERIALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030A5Q00BP LEAD WIRE HARNESS 1 S453WF S553WF ZPE W1 F030A6D50XP LEAD WIRE HARNESS 1 S5...

Page 27: ...RCUIT AU 1 S553WF MPQ S553WF YPQ E1 F603L5Q60YT D P CIRCUIT AU 1 S553WF YTE E1 F603L5Q60LP D P CIRCUIT AU 1 S553WF LPK E1 F603L5Q60ZP D P CIRCUIT AU 1 S553WF ZPE E1 F603L6A10HP D P CIRCUIT AU 1 K573MF HPE K573MF TPE E1 F603L6A10MP D P CIRCUIT AU 1 K573MF MPQ E1 F603L6A10YT D P CIRCUIT AU 1 K573MF YTE E1 F603L6A10LP D P CIRCUIT AU 1 K573MF LPK E1 F603L6A10YP D P CIRCUIT AU 1 K573MF YPQ 27 NN S453WF...

Page 28: ...MF K573MF E7 F80375K00AP COOK BUTTON SPRING 1 E8 F82565Q00AP DOOR OPENING LEVEL 1 E9 F80345R90SHP ESCUTCHEON BASE 1 K593MF E10 F80245R90SHP BUTTON A 1 K593MF E11 F83875R90SHP BUTTON B 1 K593MF E12 F80205Q50SEP KNOB A 1 K593MF E13 F83925R80SEP KNOB B 1 K593MF E14 F81895Q50HEP DISPLAY WINDOW 1 K593MF E15 F80165Q50EP DISPLAY FRAME 1 K593MF E16 F66165Q00EP FLAT CABLE 1 K593MF E20 F00075Q40HQP NAME PLA...

Page 29: ...30HHP PACKING CASE PAPER 1 K543WF HPE TPE MPQ YTE P2 F01025R30HZP PACKING CASE PAPER 1 K543WF ZPE P3 F01045Q00AP UPPER FILLER 1 P4 F01055Q00AP LOWER FILLER 1 P5 F01068100XN P E BAG 1 P6 F01078100XN DOOR SHEET 1 P7 F06015Q00AP COOKING TRAY 1 P8 F01924T00AP SHEET 1 K593MF K573MF P9 F01085R00BP RACK PACKING 1 K593MF P9 F01085R00AP RACK PACKING 1 K573MF WF K543WF P11 F10855R00AP PIZZA PAN HANDLE 1 K59...

Page 30: ...16 DIGITAL PROGRAMMER CIRCUIT NN S453WF S553WF SCHEMATIC DIAGRAM 30 NN S453WF ...

Page 31: ...31 NN S453WF ...

Page 32: ...17 DIGITAL PROGRAMMER CIRCUIT NN K593MF SCHEMATIC DIAGRAM 32 NN S453WF ...

Page 33: ...33 NN S453WF ...

Page 34: ...18 DIGITAL PROGRAMMER CIRCUIT NN K573 K543WF SCHEMATIC DIAGRAM 34 NN S453WF ...

Page 35: ...35 NN S453WF ...

Page 36: ...EM L S I 1 K573MF K543WF IC480 AEICUPC358G2 IC 1 K573MF Q226 AESA14EKE CHIP DIGI TRANSISTOR 1 Q182 Q223 Q224 AESC23JKE CHIP DIGI TRANSISTOR 3 Q222 AESC23JKE CHIP DIGI TRANSISTOR 1 K573MF K543WF Q10 Q180 2SD1859TV2Q TRANSISTOR 2 Q181 Q220 Q225 2SC2412KT146 CHIP TRANSISTOR 3 R182 R183 AERJ06J101R CHIP RESISTOR 2 100Ω Ω Ω Ω 1 16W 5 K573MF K543WF R224 AERJ06J103R CHIP RESISTOR 1 10K 1 16W 5 K573MF K54...

Page 37: ...Q220 Q225 2SC2412KT146 CHIP TRANSISTOR 3 SW1 SW2 SW21 SW23 SW28 SW30 EVQ11L05R SLIGHT TOUCH SWITCH 8 RSW90 AEVQSRBV18 REVOLVING SWITCH 1 RE80 AEVQEC16B24 REVOLVING ENCODER 1 R182 R183 AERJ06J101R CHIP RESISTOR 2 100Ω Ω Ω Ω 1 16W 5 R80 R81 AERJ06J102R CHIP RESISTOR 2 1K 1 16W 5 R82 R83 R90 R94 R224 R490 R492 AERJ06J103R CHIP RESISTOR 7 10K 1 16W 5 R221 R228 R342 R343 AERJ06J104R CHIP RESISTOR 4 100...

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