Panasonic NN-A880WB Manual de usuario

OrderNumberMOP00090015C2

MicrowaveOven

NN-A880WB/ NN-A850WB/ NN-A850CB

SPECIFICATIONS

Unauthorizedcopying and distribution isaviolation oflaw.

1. InverterWarning

Theinverterboard looks like aregularPCB, however, thisPCB drives themagnetron tubeusing

veryhigh voltages and current.

Ithas

1. Veryhigh voltageand high current

2. AnAluminiumheat sinkthat becomes veryhot

3. Thecapacitorson theinvertercircuitwill containahigh voltage

chargeevenwhentheovenisnotoperating.

Donot

1. Donottouchthecircuitryas itcontainsveryhigh voltages. When

replacing theboardplease take extremecaretoavoidpossible

electricshock. High voltages mayremaininthecircuit.

2. Donottouchthealuminiumheat sinkas itwill becomeveryhot. It

alsocontainshigh voltages.

3. DonotattempttorepairtheinverterPCB as thiscanbevery

dangerous. Replace thehigh voltageinvertercircuitas acomplete

unit. Returntheoldunitfullyrepackedintheoriginal shipping box

and completedpaperwork.

4. Donotadjust ortamperwiththepreset volumeon theinverter

board. Itisverydangeroustoadjust thispreset withoutproper

test equipment.

5. Donottest theovenwhiletheinvertergrounding striporscrews

areloose. Itisverydangeroustooperate theinvertercircuitboard

withoutaproperground connection.

Figure1

InverterGounding

Figure2

InverterPCB layout

2. FeatureChart

Function NN-A880WB NN-A850WB

NN-A850CB

Microwave 6 6

Grill 3 3

Convection 17 17

Combination YES YES

Sensor reheat 2 -

Sensor cook 2 -

Sensor combination 4 -

Weightdefrost 3 3

Weightcombination 8 12

Weightreheat - 2

Weightcook - 2

Stagecooking 3 3

Delay/Stand YES YES

More/Less YES NO

Kg->lb/oz YES YES

Clock 12H 12H

Word prompt English English

StepbyStep LED LED

3. Control Panel

4. Operation And Digital ProgrammerCircuit Test

Procdure

5. SchematicDiagram

6. Wiring Diagram

7. Description of Operating instruction

7.1. Variablepowercooking control

TheHIGHVOLTAGE INVERTERPOWERSUPPLYcontrolstheoutputpowerbyasignal from the

digital ProgrammercircuitDPC. Thepowerrelay (RY1)turnson tosupplypowertotheinverter

circuit. Thelevel ofoutputpoweriscontrolledbythedrive signal level from theinvertercircuit.

NOTE1:TheON/OFF timeratiodoes notcorrespond withthepercentageofmicrowave power

since approximately2secondsarerequiredfor heating themagnetron filament. / NOTE:2If

microwave cooking isover8minutes on HIGHpower, thefanmotor rotates for 1minuteafter

cooking tocool theovenand electrical components.

Dutycycles for microwave cooking

Output DutyON/OFF

ONtime OFF time

High 1000W 22” 0”

Defrost 440W 16” 6”

Medium 600W 22” 0”

Low 440W 22” 0”

Simmer 440W 15” 7”

Warm 440W 8” 14”

7.2. Grill Cooking

Thedigital programmercircuitcontrolsthegrill powerbyoperating thepowerrelay RY4inthe

sequence showninthetablebelow

Dutycycles for Grill Cooking

DutyON/OFF

ONTime OFF Time

Grill 1 66” 0”

Grill 2 54” 12”

Grill 3 42” 24”

7.3. Autoweightdefrost, AutoweightCook

Whenanautocontrol featureisselectedand thestartpadpressed:

1. Thedigital programmercircuitdetermines thepowerlevel and the

cooking timeand indicates theoperating state inthedisplay. The

tableshowsthecorresponding cooking times foreachcategory

and its respectiveweight.

2. Whenthecooking timeinthedisplaywindow has elapsed, the

oventurnsoff automaticallyviathecontrol signal fromthedigital

programmercircuit.

Note:Afterautocooking iftheoventemperatureisoverthe

predeterminedtemperaturethefanmotorrotates tocool theoven

and its components.

AutoWeightDefrostNN-A880WBNN-A850WBNN-A880CB

Category 1stTouch

Weight Cooking

Time

Bread 100 45s

MeatItems 200 3m 40s

MeatJoints 400 6m 20s

AutoweightCookNN-A880WB

Category 1stTouch

Weight Cooking

Time

9.WholeChicken 1000 18m 20s

10.ChickenPortions 300 9m 30s

11.Beef/Lamb 500 14m 40s

12.Casserole 800 56m 40s

13.ChilledCrispyTop 300 10m

14.FrozenCrispyTop 300 14m

15.Bake Pastry 600 15m

16.Bake Cake 400 11m 40s

AutoweightCookNN-A850WBNN-A850CB

Category 1stTouch

Weight Cooking

Time

1.ChilledMeal 300 3m 30s

2. FrozenMeal 300 6m 20s

3. FreshVegatables 100 2m 20s

4. Fish 100 1m

5. JacketPotatoes 200 16m 30s

6.FrozenPotato

Products 200 10m

7. WholeChicken 1000 18m 20s

8. ChickenPortions 300 9m 30s

9. Beef/Lamb 500 14m 40s

10. Casserole 800 56m 40s

11. ChilledCrispy

Top 300 10m

12. FrozenCrispy

Top 300 14m

13. ChilledPizza 200 7m 40s

14. FrozenPizza 200 10m

15. Bake Pastry 600 15m

16. FruitCrumble 500 18m 20s

7.4. Convection Cooking

1. Thedigital programmercircuitoperates thepowerrelaysRY3,RY5

and RY6inthesequence as showninthefigurebelow.

2. Whentheovenreaches apredeterminedtemperaturethedigital

programmercircuitstopssupplying powertorelayRY5, resulting

intheconvection heaterturning off.

3. Whenthetemperaturedropsbelow thepredetermined

temperature, thedigital programmercircuitsupplies powerto

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