Panasonic NN-C784MF User manual

ORDERNO.SIMMC0408027A3
Microwave Oven
NN-C784MF / NN-C784WF
HPE(Hong Kong)
YPQ(Singapore)
MPQ(Malaysia)
TPE(Thailand, Indonesia)
YTE(Others)
KTE(UAE)
KUE(Egypt)
PTE( Iran)
KPQ(Kuwait, Doha, Qatar, Oman, Bahrain, Pakistan)
STM(Saudi Arabia)
ZPE(CISCountries)
SPECIFICATIONS
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2004 PanasonicHome Appliances Microwave Oven (Shanghai)
Co., Ltd. / All rights reserved. Unauthorized copying and
distribution isaviolation of law.
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1. SCHEMATIC DIAGRAM
1.1. NN-C784MF/WF (EXCEPT ZPE)
1.2. NN-C784MF (ZPE)
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2. CAUTIONS TO BE OBSERVED WHEN
TROUBLESHOOTING
Unlike manyotherappliances, the microwave ovenis a high voltage, high current device. It is
free fromdangerinordinaryuse, though extreme care shouldbe takenduring repair.
Caution
Servicemen shouldremove theirwatches whenever working close
to or replacing the magnetron.
2.1. Check the grounding
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Donot operate on a twowire extension cord. The microwave ovenis designedtobe grounded
whenused. It is imperative, therefore, toensure the appliance is properlygroundedbefore
beginning repairwork.
2.2. Inverter warnings
DANGER, HIGH VOLTAGE AND HIGH TEMPERATURE (HOT/LINE) OFTHE INVERTER POWER
SUPPLY (U)
Thishigh voltage inverter power supplyhandles veryhigh voltage
and current for the magnetron tube. Though itisfree from danger
inordinaryuse, extreme care shouldbe taken during repair.
The aluminum heat sink isalso energized with high voltage (HOT),
so do not touch when the AC input terminalsare energized. The
power devices Collector isdirectlyconnected to the aluminum heat
sink.
The aluminum heat sink maybe HOTdue to heat energy, therefore,
extreme care shouldbe taken during servicing.
H.V. Inverterwarning
WARNING FOR INVERTER POWER SUPPLY (U) GROUNDING
Check the high voltage inverter power supplycircuitgrounding.
The high voltage inverter power supplycircuitboard must have a
proper chassisground, the inverter grounding bracket must be
connected to the chassis. Ifthe inverter board isnot grounded it
will expose the user to veryhigh voltages and cause extreme
DANGER!Besure that the inverter circuitisproperlygrounded via
the inverter earth bracket.
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Grounding of the invertercircuit board
WARNING!DISCHARGE THE HIGH VOLATGE CAPACITORS
For about 30 seconds after the oven isturned off, an electriccharge
remains inthe high voltage capacitors inthe inverter power supply
circuitboard.
When replacing or checking parts, remove the power plug from the
outlet and short the inverter output terminal of the magnetron
filament terminalsto the chassisground with an insulated handle
screwdriver to discharge. Please be sure to touch the chassis
ground side first and then short to the output terminals.
Discharging the high voltage capacitors
WARNING
There ishigh voltage present with high current capabilities inthe
circuits of the primaryand secondarywindings, choke coil and heat
sink of the inverter. Itisextremelydangerous to work on or near
these circuits with the oven energized. DO NOTmeasure the
voltage inthe high voltage circuitincluding the filament voltage of
the magnetron.
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WARNING
Never touch anycircuitwiring with your hand or with an insulated
tool during operation.
2.3. Part replacement.
Whenanypart orcomponent is tobe replaced, always ensure that the powercordis removed
fromthe wall outlet.
2.4. When the 10Afuse isblowndue to the operation of the short
switch:
WARNING
When the 10A250V fuse isblowndue to the operation of the
interlock monitor switch, replace all of the components (primary
latch switch, secondarylatch switch, short switch and power relay
B(RY1)).
1. Thisismandatory. Refer to “adjustments and measurements” for
the location of these switches.
2. When replacing the fuse, confirm that ithas the appropriate rating
for these models.
3. When replacing faultyswitches, be sure the mounting tabs are
not bent, broken or deficient intheirabilityto holdthe switches.
2.5. Avoidinserting nails, wire etc. through anyholes inthe unit
during operation.
Neverinsert a wire, nail oranyothermetal object through the lampholes on the cavityorany
holes orgaps, because suchobjects maywork as anantenna and cause microwave leakage.
2.6. Confirm after repair
1. After repairor replacement of parts, make sure that the screwsof
the oven, etc. are neither loose nor missing. Microwaves might
leak ifscrewsare not properlytightened.
2. Make sure that all electrical connections are tight before inserting
the plug into the wall outlet.
3. Check for microwave energyleakage. (Refer to procedure for
measuring microwave energyleakage).
CAUTION MICROWAVE RADIATION
USE CAUTIONNOTTO BECOME EXPOSEDTO RADIATIONFROM
THEMICROWAVE MAGNETRONOROTHERPARTS CONDUCTING
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MICROWAVE ENERGY
IMPORTANTNOTICE
The following components have potentialsabove 2000V whilethe
appliance isoperated.
-Magnetron
-High voltage transformer (Located on inverter (U))
-High voltage diodes (Located on inverter (U))
-High voltage capacitors (Located on inverter (U))
Payspecial attention to these areas.
When the appliance isoperated with the door hinges or magnetron
fixed incorrectly, the microwave leakage can exceed more than
5mW/cm2. After repairor exchange, itisveryimportant to check if
the magnetron and the door hinges are correctlyinstalled.
2.7. Sharp edges
Caution
Please use caution when unpacking, installing or moving the unit,
as some exposed edges maybe sharp to the touch and cause
injuryifnot handled with care.
3. MEASUREMENTS AND ADJUSTMENTS
3.1. Adjustment of primarylatch switch, secondarylatch switch and
short switch.
1. Mount the Primarylatch switch, the Secondarylatch switch and
the Short switch to the door hook assemblyas showninILL.
NOTE:
Nospecificindividual adjustment during installation of the
Primarylatch switch, Secondarylatch switch or short switch to
the door hook are required.
2. When mounting the door hook assemblyto the oven assembly,
adjust the door hook assemblybymoving itinthe direction of the
arrowsinthe illustration, so that the oven door will not have any
playinit. Check for playinthe door bypulling the door assembly.
Make sure that the latch keysmove smoothlyafter adjustment is
completed. Completelytighten the screwsholding the door hook
assemblyto the oven assembly.
3. Reconnect the short switch and check the continuityof the
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monitor circuitand all latch switches againbyfollowing the
component test procedures.
3.2. Measurement of microwave output
The output powerof the magnetron canbe determinedbyperforming IEC standardtest
procedures. However,due tothe complexityof IEC test procedures, it is recommendedtotest
the magnetron using the simple method outlinedbelow.
NecessaryEquipment:
*1 literbeaker*Glass thermometer/ *Wrist watchorstopwatch
NOTE:
Check the line voltage under load.Low voltage will lower the
magnetron output. Take the temperature readings and heating time
as accuratelyas possible.
1. Fill the beaker with exactlyone liter of tap water.Stirthe water
using the thermometer and record the water’stemperature.
(recorded as T1).
2. Place the beaker on the center of glass tray. / Set the oven for
High power and heat itfor exactlyone minute.
3. Stirthe water againand read the temperature of the water.
(recorded as T2).
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4. The normal temperature rise at High power level for each model,
isas shownintable.
TABLE (1L-1min.test)
RATED OUTPUT TEMPERATURE RISE
1000W Min.8.6°C
4. EXPLODED VIEW AND PARTS LIST
4.1. EXPLODEDVIEW
4.2. PARTS LIST
NOTE:
1. When ordering replacement part(s), please use part number(s)
showninthispart list.
Donot use description of the part.
2. Important safetynotice:
Components identified bymark have special characteristics
important for safety.
When replacing anyof these components, use onlymanufacture’s
specified parts.
NOTE:
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-“A“parts are supplied byCSD(Japan)
-“F“ parts are supplied byPHAMOS(China)
Ref. No. PartNo. PartName& Description Pcs/Set Remarks
1F01506W50XP NO TOUCHING LABEL 1
2F00066V00HP CAUTION LABEL 1 EXCEPTZPE
2F00066W10ZP CAUTION LABEL 1 ZPE
3F00076V50SHP NAMEPLATE 1 C784MF HPE
3F00076V50SMP NAMEPLATE 1 C784MF MPQ
3F00076V50SYP NAMEPLATE 1 C784MF YPQ
3F00076V50SYT NAMEPLATE 1 C784MF YTE
3F00076V50STP NAMEPLATE 1 C784MF TPE
3F00076V50SKT NAMEPLATE 1 C784MF KTE
3F00076V50SKP NAMEPLATE 1 C784MF KPQ
3F00076V50SST NAMEPLATE 1 C784MF STM
3F00076V50SPT NAMEPLATE 1 C784MF PTE
3F00076V50SZP NAMEPLATE 1 C784MF ZPE
3F00076V50HKT NAMEPLATE 1 C784WF KTE
3F00076V50HKP NAMEPLATE 1 C784WF KPQ
3F00076V50HST NAMEPLATE 1 C784WF STM
3F00076V50HPT NAMEPLATE 1 C784WF PTE
3F00076V50HKU NAMEPLATE 1 C784WF KUE
4F10014X80XN BASE 1
5F1008-3W0 RUBBER FOOT 4
6F110D6V50SHP CABINETBODY(U) 1 C784MF
6F110D6V50HKT CABINETBODY(U) 1 C784WF
7F11404J60XN STOPPER 2
8F11614X80MN REINFORCEBRACKET 1
9F200A5G00XN OVEN(U) 1
10 F2011-1640 COVER 1
11 F21315G00XN PULLYSHAFT 1
12 F2177-F80 WASHER 1
13 F290D5G00XN ROLLER RING (U) 1
16 J300W-1830 DOOR HOOK (U) 1
17 F3105-1830 LATCH BRACKET 1
19 F400A6V50HP FAN MOTOR 1
20 F40084T00AP FAN BLADE 1
21 F40254X80MN AIR GUIDEA 1
22 F40264X80MN AIR GUIDEB 1
23 F40315G00XN AIR GUIDEC 1
24 F630G4X80HN HEATER(AU) 1 HPE,YTE,TPE,KTE,STM,ZPE,PTE,KUE
24 F630G4X80MN HEATER(AU) 1 MPQ,YPQ,KPQ
25 A607S-1450 SENSOR 1
26 F64174X80MN HEATER MOUNTING PLATE 3
27 F606Y4V00XN H.V.INVERTER(U) 1
28 J6142-1450 MICRO SWITCH 1 (V-16G-3C26-M)(PRIMARYLATCH SWITCH)
29 A61425180AP MICRO SWITCH 1 (L-3C2-2)(SECONDARYLATCH SWITCH)
30 F61456V50HP THERMAL CUTOUT 2
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Ref. No. PartNo. PartName& Description Pcs/Set Remarks
31 A61785180AP MICRO SWITCH 1 (L-2C2-2)(SHORTSWITCH)
32 A62304210BP FUSE 1 10A,250V
33 F63265U00XN TURNTABLEMOTOR 1
34 F64504J00XN SENSOR COVER B 1
35 F65434X80MN SENSOR COVER C 1
36 F65854Y60XN INVERTER BRACKET 1
37 F67634X80MN INVERTER BRACKETB 1
38 F66624X80MN GROUNDING PLATE 1
40 A62314000AP FUSE HOLDER 1 EXCEPTSTM, ZPE
42 F900C5E60YK AC CORD W/PLUG 1 HPE,MPQ,YPQ,YTE,KTE,KPQ,KUE
42 F900C5E60TN AC CORD W/PLUG 1 TPE,PTE
42 F900C5G00ST AC CORD W/PLUG 1 STM
42 F900C5G00ZP AC CORD W/PLUG 1 ZPE
43 XTWAFE4+10RU SCREW 4 FOR MAGNETRON
44 XTTFA4+6BN SCREW 1 FOR COVER
46 XTWFA4+12LR SCREW 4 FOR LEFTHINGE2,RIGHTHINGE2
47 2M261-M32F MAGNETRON 1 EXCEPTSTM,ZPE
47 2M261-M32J MAGNETRON 1 STM,ZPE
48 F80234J00XN ESCUTCHEON SASH 1
49 F300B-1640 LEFTHINGE 1
50 F300U-1640 RIGHTHINGE 1
51 XNG4EVS NUT 2
52 XWS4VL SPRING WASHER 2
53 F40244X80MN EXHAUSTGUIDEA 1
54 F41074X80MN EXHAUSTGUIDEB 1
55 F48804X80MN INSULATION PLATE 1
56 F22364X80MN RIGHTHEATER PANEL 1
57 F203M4X80MN HEATER FAN CASE 1
58 F22395850AP HEATER FAN 1
59 F41325850AP PULLEY B 1
60 F41575850AP FAN BRACKETA 1
61 F41585850AP FAN BRACKETB 1
62 F41635850AP FAN SPACER C 1
63 A420P5850AP HEATER FAN AXLETREE (U) 1
65 A40604X80MN BELTA 1
66 F41795G00XN HEATER FAN MOTOR 1 EXCEPTSTM
66 F41795G00SN HEATER FAN MOTOR 1 STM
67 F40085020AQ FAN BLADE 1
68 F41805G00XN HEATER FAN MOTOR BRACKET 1
72 F0922000AD CUSHION RUBBER C 1 (AIR GUIDEB)
73 F0005-4S10 EARTH LABEL 1 TPE
74 F02395E20KN CORD CAUTION LABEL 1 KTE,KPQ,STM,PTE,KUE
75 J692Y4T00QPR NOISE FILTER(U) 1 STM,ZPE
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Ref. No. PartNo. PartName& Description Pcs/Set Remarks
76 F67974X00CP P.C.B. HOLDER 1 STM,ZPE
77 F612E5G00XP INCANDESCENTLAMP(U) 1 EXCEPTHPE
77 F612E5T80HN INCANDESCENTLAMP(U) 1 HPE
79 F00066W10MP CAUTION LABEL 1 YPQ
80 F02846V50YP NO. LABEL 1 YPQ
4.3. DOORASSEMBLY
Ref. No. PartNo. PartName& Description Pcs/Set Remarks
D1 F302K4J00XN DOOR E(U) 1
D3 F3044-1640 RIGHTDOOR ARM 1
D4 F30854J00XN DOOR C 1
D5 F3252-1450 DOOR ARMSPACER 1
D6 XTNFA3+7Q SCREW 8
D7 F3054-1640 LEFTDOOR ARM 1
D8 F3230-1600 DOOR KEY SPRING B 1
D9 F302A6V50SHP DOOR A(U) 1 C784MF
D9 F302A6V50HKT DOOR A(U) 1 C784WF
4.4. WIRING MATERIALS
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Ref. No. PartNo. PartName& Description Pcs/Set Remarks
W1 F030A5G00XN LEAD WIREHARNESS 1 EXCEPTSTM, ZPE
W1 F030A5G00ZP LEAD WIREHARNESS 1 STM,ZPE
W2 F030E4X80MN H.V. LEAD WIRE 1
W4 AECQJ5335KRP CAPACITOR 1 EXCEPTSTM, ZPE
4.5. ESCUTCHEONBASE ASSEMBLY
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Ref. No. PartNo. PartName& Description Pcs/Set Remarks
E1 F603L5G00HN D.P. CIRCUIT 1 HPE
E1 F603L5G00MN D.P. CIRCUIT 1 MPQ
E1 F603L5G00YN D.P. CIRCUIT 1 YPQ
E1 F603L5G00TN D.P. CIRCUIT 1 YTE,TPE
E1 F603L5G00SN D.P. CIRCUIT 1 KTE,STM,PTE,KUE
E1 F603L5G00KN D.P. CIRCUIT 1 KPQ
E1 F603L5G00ZP D.P. CIRCUIT 1 ZPE
E2 F630Y6V50SHP MEMBRANESWITCH 1 C784MF HPE/MPQ/YPQ/YTE/TPE
E2 F630Y6V50SKT MEMBRANESWITCH 1 C784MF KTE/KPQ/STM/PTE
E2 F630Y6V50SZP MEMBRANESWITCH 1 C784MF ZPE
E2 F630Y6V50HKT MEMBRANESWITCH 1 C784WF KTE/KPQ/STM/PTE/KUE
E3 F80346V50SHP ESCUTCHEON BASE 1 C784MF
E3 F80346V50HKT ESCUTCHEON BASE 1 C784WF
E4 F81274J00XN BACK PANEL 1
E5 F80025G00XN ESCUTCHEON B 1
E6 F82844J00XN CUSHION RUBBER 1
4.6. PACKING AND ACCESSORIES
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Ref. No. PartNo. PartName& Description Pcs/Set Remarks
P1 F00036V50HP INSTRUCTION MANUAL 1 HPE,MPQ,YPQ,YTE,TPE
P1 F00036V50KP INSTRUCTION MANUAL 1 KTE,KPQ,STM,PTE,KUE
P1 F00036V50ZP INSTRUCTION MANUAL 1 ZPE
P2 F000B6V50HP COOKING GUIDE 1 HPE,MPQ,YPQ,YTE,TPE
P2 F000B6V50KP COOKING GUIDE 1 KTE,KPQ,STM,PTE,KUE
P2 F000B6V50ZP COOKING GUIDE 1 ZPE
P4 F00324040XN EARTH CAUTION LABEL 1 TPE
P5 F01026V50SHP PACKING CASE,PAPER 1 C784MF HPE/MPQ/YPQ/YTE/TPE
P5 F01026V50SKT PACKING CASE,PAPER 1 C784MF KTE/PTE
P5 F01026V50SKP PACKING CASE,PAPER 1 C784MF KPQ/STM
P5 F01026V50SZP PACKING CASE,PAPER 1 C784MF ZPE
P5 F01026V50HKT PACKING CASE,PAPER 1 C784WF KTE/PTE/KUE
P5 F01026V50HKP PACKING CASE,PAPER 1 C784WF KPQ/STM
P6 F01044J00XN UPPER FILLER 1
P7 F01054J00XN LOWER FILLER 1
P8 F01064W00AP P.E. BAG 1
P9 F01078100XN DOOR SHEET 1
P10 F01084J00XN TRAYPACKING 1
P12 F04456V50SMP OVERLAY 1 MPQ,YPQ,YTE
P12 F04456V50STP OVERLAY 1 TPE
P13 A06014J00XN COOKING TRAY 1
P14 F06024X80MN OVEN RACK 1
P15 F91644000XN EARTH LEAD 1 TPE
P16 F01134J00XN TRAYSTYROL 1
P17 F01174J00KN TRAYSTYROL B 1 KTE,KPQ,STM,PTE,KUE
P18 F01925E60XN SHEET 1
P19 F01264J00XN REINFORCEMATERIAL 1 KTE,KPQ,STM,PTE,KUE
P20 F01115E90ZP G LABEL 1 ZPE
P21 F01565G00HP OPERATION PRECAUTION 1 HPE,MPQ,YPQ,YTE,TPE
P21 F01565G00KP OPERATION PRECAUTION 1 KTE,KPQ,STM,PTE,KUE
P21 F01565G00ZP OPERATION PRECAUTION 1 ZPE
5. DIGITAL PROGRAMMER CIRCUIT
5.1. SCHEMATICDIAGRAM
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