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NN-CT880MBPQ NN-CT870WBPQ

37

15 Parts List

1. Part numbers are indicated on most mechanical parts. Please use these part numbers for part orders. Do not use the descrip-

tion of the part.

Important safety notice

1. Components identified by the  “!” mark have special characteristics important for safety. Components identified by the  “R”

mark ( “Restriction of hazardous substances” in electrical & electronic equipment.) are RoHS compliant.  When replacing any
of these components, use only the manufacturers specified part numbers.

15.1. Common parts

Ref. No.

Part No.

Part Name & Description

Qty

1

(!)

E00064080BP

WARNING LABEL  

1

2

E41199000GP

EXHAUST GUIDE D 

1

3

E10589000BP

BACK PANEL COVER

1

4

(!)

E605A4V20BP

THERMISTER

1

5

AEE9108A20GN

HOLDER (P CLIP)  

1

6

E900C4V20BP

POWER CORD SUPPLY

1

7

(!)

E67597550GP

FUSE  10A

1

8

(!)

E607X9G00BPU

NOISE FILTER

1

9

(!)

E400A4760JP

FAN MOTOR 

1

10

(!)

AEE6230P10GN

FUSE 16A

1

11

E09020000AP

CUSHION RUBBER  

1

12

E22369000BP

RIGHT HEATER PANEL 

1

13

E41444V20GP

ORIFICE

1

14

E40086430GP

FAN  

1

15

(!)

E030A7X80BP

LEAD WIRE

1

16

E41739000BP

SHUTTER FLAP  

1

17

E09020000AH

CUSHION RUBBER  

2

18

(!)

F63265U02XN

MOTOR

1

19

E41749000BP

SHUTTER PIN  

1

20

E400E9000BP

AIR GUIDE 

1

21

E48236750BP

CAM A  

1

22

(!)

E61425180AP 

SHUTTER   SWITCH 

1

23

E22439000BP

ADIABATIC MATERIAL  A

1

24

E40447P00BP

INVERTER AIR GUIDE

1

26

E40307M30BP

AIR GUIDE D 

1

27

(!)

E030E4V20BP

HV LEAD WIRE

1

28

(!)

E606YM300XN

INVERTER

1

29

E66017P00BP

INVERTER EARTH BRACKET

1

30

E65857H83BP

INVERTER SUPPORT BRACKET

1

31

E10214V20UP

ADAPTER PLATE

1

32

(!)

E610T6700BP

OVEN LAMP 

1

33

E603Y7X80BP

PCB DU

1

34

E030C6R20BP

ADAPTER LEADWIRE

1

38

E393C8000BP

DOOR HOOK UNIT

1

39

E11088020BP

FIBRE WASHER  

4

41

E09020000ED

CUSHION RUBBER  

1

42

(!)

2M236-M1J1Y

MAGNETRON

1

43

E61454V00BP

THERMAL CUTOUT 

2

44

11JN

SCREW  

4

45

E10019000BP

BASE PLATE  

1

46

E16079000BP

DRIP TRAY

1

47

E21449000BP

SELF CLEAN.PANEL

1

48

E20347X80BP

HEATER SUPPORT  BRACKET

2

49

(!)

F63265U02XN

TURNTABLE MOTOR

1

50

AEE1008-5S1

RUBBER FOOT  

4

51

(!)

E630G9000BP

GRILL HEATER  

1

52

AEE2177-F80

PULLEY SHAFT WASHER 

1

53

E21315870GP

PULLEY SHAFT  

1

54

E30079010AP

HINGE B  

1

55

XST3+W5V

SCREW

1

56

E20559000BP

COVER A  

1

57

E200A6A50BP

OVEN CAVITY

1

58

E09030000CD

CUSHION RUBBER  

1

59

E22589000BP

ADIABATIC  MATERIAL 

1

60

E22379000BP

LEFT HEATER   PANEL 

1

61

(!)

E601L7X80QP

HUMIDITY SENSOR 

1

62

E40249000GP

EXHAUST GUIDE A 

1

63

E202N9000BP

UPPER HEATER COVER

1

64

E64179000GP

HEATER BRACKET A 

1

65

E67579000BP

HEATER BRKT  D  

1

66

(!)

E630H9000BP

CONVECTION HEATER 

1

Содержание inverter NN-CT870WBPQ

Страница 1: ...HAD1003004C2 Microwave Oven NN CT880MBPQ NN CT870WBPQ 32L United Kingdom Panasonic Home Appliance Division 2010 Unauthorized copying and distribution is a violation of law ...

Страница 2: ...3 Troubleshooting Guide 33 14 Exploded View 36 15 Parts List 37 16 Door Assy 39 17 Escutcheon Base 40 18 Packing and Accessories 42 19 Trim Kit 43 20 Digital Programmer Circuit 44 21 Key Board Matrix 45 Power source 230V 240V AC Single Phase 50Hz Power requirements Microwave 1200W Grill 1560W Convection 1300W Combi 2700W Output IEC60705 Microwave 1000W Grill 1500W Convection 1250W Microwave freque...

Страница 3: ...he inverter PCB as this can be very dangerous Replace the high voltage inverter circuit as a complete unit Return the old unit fully repacked in the original shipping box and completed paper work 4 Do not adjust or tamper with the preset volume on the inverter board It is very dangerous to adjust this preset without proper test equipment 5 Do not test the oven while the inverter grounding strip or...

Страница 4: ...ng cooking the door is opened or Stop Cancel Pad is pressed once Start Pad has to be pressed again to continue cooking 16 Stop Cancel Pad Before Cooking one press clears your instructions During Cooking one press temporarily stops the cooking program Another press cancels all your instructions and the time of day will appear in the display 3 Beep Sound A beep sounds when a pad is pressed If this b...

Страница 5: ... min 1 min 10 sec 1 h Press five times Press twice Inoperable Example of how to set 1 25pm Timer Timer Select Cooking Time Press this pad until the power you require appears in the display window Microwave Cooking and Defrosting There are 6 different microwave power levels available Selecting Microwave Power Level 10 min 1 min 10 sec 1 h Micro Power Start Power Press Level Wattage once High 1000 W...

Страница 6: ...g unless you are using the enamel shelf Start Convection Cooking Press to select oven temperature The oven starts at 150 C and then for each press the temperature will count up in 10 C stages to 250 C then to 40 C 100 C 110 C etc The Convection symbol will appear Press Start to preheat A P will appear in the display window When the oven is preheated the oven will beep and the P will flash Then ope...

Страница 7: ...250 C then to 100 C 110 C etc Grill and Convection symbols will appear Press to select Grill power if you wish to adjust from Grill 3 Low to select Grill 1 High or Grill 2 Medium Press Start to preheat P will appear in the display window When the oven is preheated the oven will beep and the P will flash Then open the door and place the food inside 10 min 1 min 10 sec 1 h Start Press Time Pads to e...

Страница 8: ... to 100 C 110 C etc Press Micro Power Pad to select Microwave setting HIGH DEFROST are not available Press to enter required cooking time 10 sec pad is inoperable Press Start Pad Combination 2 Grill and Microwave This Combination mode is suitable for foods which are normally grilled and for reheating small savoury items Do not use this program with less than 200 g 7 oz of food It is necessary to p...

Страница 9: ...ecessary to preheat and food should always be cooked uncovered 10 min 1 min 10 sec 1 h Turbo Bake Grill 1 2 3 Micro Power Start Combination Press Combination Pad Press to select oven temperature The oven starts at 150 C and then for each press the temperature will count up in 10 C stages to 250 C then to 100 C 110 C etc Press to select Grill Power if you wish to adjust from Grill 3 Low to Grill 1 ...

Страница 10: ...NN CT880MBPQ NN CT870WBPQ 10 6 Schematic Diagram ...

Страница 11: ...NN CT880MBPQ NN CT870WBPQ 11 7 Wiring Diagram Wiring Harness ...

Страница 12: ...ble below Duty cycles for Grill Cooking 8 3 Auto weight defrost Auto weight Cook When an auto control feature is selected and the start pad pressed 1 The digital programmer circuit determines the power level and the cooking time and indicates the operating state in the display The table shows the corresponding cooking times for each category and its respective weight 2 When the cooking time in the...

Страница 13: ...upplying power to relay RY5 resulting in the convection heater turning off 3 When the temperature drops below the predetermined temperature the digital programmer circuit supplies power to power relay RY5 resulting in the convection heater turning on Note After the convection process if the oven tempera ture is higher than the predetermined temperature the fan motor rotates to cool the electronic ...

Страница 14: ...rill combination the sequence applies with the digital programmer circuit switching power relay RY4 to con trol the grill elements With convection grill and micro power combination The grill elements and convection elements are operated alternatively whilst the oven temperature is above the selected level Convection Microwave Combination Convection Heater Microwave ON time OFF time Output W Duty O...

Страница 15: ...NN CT880MBPQ NN CT870WBPQ 15 8 5 1 convection and microwave duty cycles Figure 1 ...

Страница 16: ...NN CT880MBPQ NN CT870WBPQ 16 8 5 2 grill and microwave duty cycles Figure 2 ...

Страница 17: ...o sensor cooking a carefully designed instrument called the humidity sensor element senses the escape of steam then based upon the auto sensor program selected the unit will automatically determine the correct power level and the proper length of time it will take to cook the food NOTE Auto sensor cooking is successful with the foods and recipes found in the auto sensor cooking guide Because of th...

Страница 18: ...om danger in ordinary use extreme care should be taken during repair As you can see it looks like a TV flyback transformer however the current is extremely large and is therefore dangerous due to this high current and high voltage The aluminium heat sink is also energized with high voltage HOT so do not touch when the AC input terminal is con nected The power devices Collector is directly connecte...

Страница 19: ... to discharge Please be sure to touch the chassis ground side first and then short to the output terminals WARNING There is high voltage present with high current capabilities in the circuits of the primary and secondary windings choke coil and heat sink of the inverter It is extremely dangerous to work on or near these circuits with the oven energized DO NOT measure the voltage in the high voltag...

Страница 20: ...ir 1 After repair or 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 tight ened 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 proce dure for measuring microwave energy leakage CAUTION MICROWAVE RADIATION D...

Страница 21: ... holding the magnetron as shown in figure 2 NOTE After replacing the magnetron tighten the mount ing screws making sure that there is no gap between the waveguide and the magnetron to prevent microwave leak age Caution When replacing the magnetron ensure that the antenna gasket is in place Note The magnetron used for this model is unique for the inverter power supply system Make sure to use the ma...

Страница 22: ...nd support base from the oven 7 Remove the air guide E by un clipping the catch hooks 8 Remove the four screws holding the PCB to the inverter support base Caution when replacing the inverter power supply U 1 Make sure that grounding plate is in place 2 Securely tighten the grounding screw through the side of the chassis Base 3 Securely connect the 3 lead wire connectors 4 Make sure that the heat ...

Страница 23: ...n base with double faced adhesive tape Therefore apply ing hot air such as using a hair dryer is recommended for smoother removal 2 When installing a new escutcheon key board make sure that the surface of the escutcheon base is cleared suffi ciently so that problems such as shorted contacts and uneven surfaces can be avoided 10 4 Low voltage transformer and or power relays Note Be sure to ground y...

Страница 24: ...t 4 Remove the door key and spring from the door E After replacement of the defective component parts of the door reassemble it and follow the instructions below for proper installation and adjustment so as to prevent exces sive microwave leakage 1 When mounting the door to the oven be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge in the direc...

Страница 25: ...Disconnect the cables to the grill heater 4 Remove the grill cover by removing the 5 screws in figure 11 5 Remove the two screws holding the grill heater Figure12 6 Loosen the 2 screws holding the ceramic grill holders turn the holders to release the grill element 7 Remove the heater bracket D by using a flat blade screw driver to lever back the tabs 8 The grill element can now be removed from ins...

Страница 26: ...NN CT880MBPQ NN CT870WBPQ 26 Removing the screws holding the grill heater Figure 11 Removing the grill element Figure 12 ...

Страница 27: ... 14 4 Remove the power cord 5 Remove the wire terminals from the circulation fan motor and the convection heater element 6 Remove the four screws from the oven base Figure 15 7 Carefully place the oven onto its base and remove the backplate 8 Remove the nut holding the circulation fan Figure 16 9 Remove the circulation fan by removing the three screws Figure 16 10 Remove the convection element by ...

Страница 28: ...NN CT880MBPQ NN CT870WBPQ 28 Removing the oven back plate Figure 14 Removing the base plate Figure 15 ...

Страница 29: ...NN CT880MBPQ NN CT870WBPQ 29 Removing the circulation motor Figure 16 ...

Страница 30: ...tch and Monitor Cir cuit 1 Unplug the lead wires from the HV inverter primary termi nals 2 Connect the test probes of the ohm meter to these leads 3 Test the continuity of the short switch with the door open and the door closed using the lowest ohm scale 11 3 Magnetron Continuity checks can only indicate an open filament or a shorted magnetron To diagnose an open filament or shorted magnetron 1 Is...

Страница 31: ...f the oven The resistance reading across the thermistor should read 300K ohm within a temperature range of 10 to 30 degrees centigrade This would be the temperature range within a kitchen environment If the resistance measured is outside this range the thermistor is defective and should be replaced NOTE When measuring the resistance of the thermistor dis connect the connector from the digital prog...

Страница 32: ...re that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the door hook assembly to the oven assembly 3 Reconnect the short switch primary switch and second ary latch switches and check the continuity of the monitor circuit and latch switches by following the component test procedures on page 12 2 Measurement of microwave output The output power of th...

Страница 33: ...NN CT880MBPQ NN CT870WBPQ 33 13 Troubleshooting Guide ...

Страница 34: ...NN CT880MBPQ NN CT870WBPQ 34 Fuses are not blown Fuses are blown Checking the semiconductors using a resistance meter ...

Страница 35: ...ting Alternate way to troubleshoot oven with AC Ampere meter used H95 H97 H98 H99 appears in display window a short time after start key is pressed and no microwave oscillation with AC Ampere meter used for troubleshooting Alternative method for toubleshooting the inverter circuit ...

Страница 36: ...NN CT880MBPQ NN CT870WBPQ 36 14 Exploded View ...

Страница 37: ...PIN 1 20 E400E9000BP AIR GUIDE 1 21 E48236750BP CAM A 1 22 E61425180AP SHUTTER SWITCH 1 23 E22439000BP ADIABATIC MATERIAL A 1 24 E40447P00BP INVERTER AIR GUIDE 1 26 E40307M30BP AIR GUIDE D 1 27 E030E4V20BP HV LEAD WIRE 1 28 E606YM300XN INVERTER 1 29 E66017P00BP INVERTER EARTH BRACKET 1 30 E65857H83BP INVERTER SUPPORT BRACKET 1 31 E10214V20UP ADAPTER PLATE 1 32 E610T6700BP OVEN LAMP 1 33 E603Y7X80B...

Страница 38: ...71 E41079000GP EXHAUST GUIDE B 1 72 E09230000AQ CUSHION RUBBER 1 73 E490S8020GP CONV MOTOR 1 74 E22399000GP CIRCUALTION FAN 1 76 E01507550BP WARNING LABEL 1 77 E090900BCAN BASEPLATE CUSHION 2 78 E09230000AN CUSHION 1 Ref No Part No Part Name Description Qty 75 E110D6A50NBP OUTER PANEL 1 Ref No Part No Part Name Description Qty 75 E110D4V30HBP OUTER PANEL 1 Ref No Part No Part Name Description Qty ...

Страница 39: ...become damaged during disassembly of the door Ref No Part No Part Name Description Qty D1 E302A7X80HBP DOOR A ASSEMBLY 1 D2 E30214000AP DOOR KEY SPRING 1 D3 E30188000BP DOOR KEY A 1 D4 E302K9000BP DOOR E 1 D5 E30859000BP DOOR C 1 D6 E30067300AP HINGE 1 Ref No Part No Part Name Description Qty D1 E302A7X80NBP DOOR A ASSEMBLY 1 D2 E30214000AP DOOR KEY SPRING 1 D3 E30188000BP DOOR KEY A 1 D4 E302K900...

Страница 40: ...SULATION SHEET 1 E8 E83097P00BP PCB SPACER 1 E9 E605S7X80BP PCB HU 1 E10 E82566A50BP DOOR OPENING LEVER 1 E11 E80378A0AG DOOR OPENING BUTTON SPRING 1 E12 E80727P00HBP DOOR OPENING BUTTON 1 E13 E63837X80BP MEMBRANE SWITCH 1 E14 E80347X80HBP ESCUTCHEON BASE 1 NOTE When ordering a new Escutcheon base E14 also order a nameplate E1 Write the model number and serial number of the microwave oven onto the...

Страница 41: ...Ref No Remarks Part No Part Name Description Qty E1 E00077X80NBP NAME PLATE 1 E2 E81897P20BP DISPLAY WINDOW 1 E3 E80257P00NBP OPERATING BUTTONS 1 E4 E81277P00BP BACK PLATE 1 E5 E66167P00BP RIBBON CABLE 1 E6 E603L7X80BP PCB AU 1 E7 E60707P20BP INSULATION SHEET 1 E8 E83097P00BP PCB SPACER 1 E9 E605S7X80BP PCB HU 1 E10 E82566A50BP DOOR OPENING LEVER 1 E11 E80378A0AG DOOR OPENING BUTTON SPRING 1 E12 E...

Страница 42: ...IGH 1 P5 E06016A50BP SQUARE ENAMEL TRAY 1 P6 E06026A50BP SQUARE WIRE RACK 1 P7 E06014N30BP GLASS TRAY 1 P8 E06015020VP ENAMEL TRAY 1 P9 E290D5850GP ROLLER RING 1 P10 E06485020AP SPATTER SHEILD 1 P11 E00037X80BP OPERATING INSTRUCTIONS 1 P12 E01024V20BP CARTON BOX 1 P13 E01056A50BP LOWER FILLER 1 P14 E01069000BP COVER POLYTHENE 1 P15 E01079000BP DOOR SHEET 1 P16 E01926430GP PROTECTOR SHEET 1 P17 E01...

Страница 43: ...ription Microwave Oven Model Number NN TKA80W E1603A510HBP 1 Top And Bottom Strip REF No 1 NN CT870WB NN TKA80M E1603A510NBP 1 Top And Bottom Strip REF No 1 NN CT880MB NN TKA80W E1601A540HBP 1 Side strip REF No 2 NN CT870WB NN TKA80M E1601A540NBP 1 Side strip REF No 2 NN CT880MB A0003A810BP Installation Guide ...

Страница 44: ...NN CT880MBPQ NN CT870WBPQ 44 20 Digital Programmer Circuit ...

Страница 45: ...ED PIZZA B 2 A 1 I 9 AUTO MENU 6 C 13 CASSEROLE 14 MEAT SAUCE J 10 AUTO MENU 7 C 15 POTATO CRISPY TOP 16 PASTA CRISPY TOP K 11 AUTO MENU 8 C 17 WHOLE CHICKEN 18 CHICKEN PIECES WITH BONE 19 CHICKEN PIECES BONELESS L 12 AUTO MENU 9 C 20 BAKE FRUIT CRUMBLE 21 BAKE CAKE M 13 㧙 㧙 N 14 1 HOUR C O 15 10 MIN C P 16 10 SEC C Q 17 1 MIN C R 18 㧙 㧙 S 19 MICRO POWER C T 20 CONVECTION C U 21 COMBINATION 㧙 V 22...

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