Manuals / Whirlpool / Kitchen Appliance / Dishwasher

Whirlpool MAH3000 service manual MAH7500, 16010486, Teardown & Wiring Information

Models: MAH3000

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MAH7500

16010486 (16008373-05)	Section 5. Teardown & Wiring Information	5-8

Revised 10/00

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Whirlpool MAH3000 MAH7500, 16010486, Teardown & Wiring Information, Revised 10/00 2001 Maytag Appliances Sales Company

Contents

Service Manual Customer ServiceWasher 16010061SAFETY PRECAUTIONS USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTSINTRODUCTION MAH3000Models covered in this manual Maytag Appliances Sales Company 240 Edwards Street, S.E Cleveland, TNC O N T E N T S GENERALSECTION ASSEMBLYCABINET ASSEMBLY DIAGNOSTICMOTOR DisplacementOUTER MACHINEPRE-INSTALLATION REQUIREMENTS Checkpoints for proper installationUNCRATING INSTRUCTIONS NOTE Proper installation is the responsibil- ity of the purchaserINSTALLATION GROUNDING POLARITY CHECKS CAUTION Do not cut or remove the ground- ing prong from this plugSPECIFICATIONS USE OF ADAPTERS IS NOT RECOMMENDEDWASHER CONTROLS Prior To SeriesINPUT DEFINITIONS Series 17 & LaterDOOR LOCK SWITCH INPUT END-OF-CYCLE SIGNAL INPUTTEMPERATURE SENSOR INPUT TIMER INPUTSWATER TEMPERATURE INPUTS DefinitionsOUTPUT DEFINITIONS END-OF-CYCLE SIGNAL OUTPUTSee Timer Input Charts TIMER MOTOR OUTPUTTORQUE OUTPUT Vcc REFERENCE VOLTAGE OUTPUTWATER VALVE OUTPUTS CYCLE SEQUENCE DEFINITIONS 1-10DELAY Timer Motor Output and Section 2 Timer Input ChartMISCELLANEOUS Door Latch Switch Monitoring Door Lock/Spin ControlRedistribution 1-11Push-To-Start Relay Operation 1-12STARTING THE WASHER STOPPING THE WASHERCYCLE REVIEW Main Wash Time/Total Cycle Time - Minutes See Notes1-13 Diagnosis - Clothes Wet at End of SpinGENERAL COMPONENT EXPLODED VIEW 1-14SECTION 1. GENERAL INFORMATION 1998 Maytag CorporationSECTION 2. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TEST EQUIPMENTDescription Part NumberELECTRICAL TESTS G r o u n d e d C o m p o n e n t sVoltage Checks Water Valve TestTimer & Console Switches Timer Input ChartsSECTION 2. ELECTRICAL COMPONENTS & TESTING T C BKey 0 = Input Signal Not Asserted1= Input t i m e rMachine Control M A C HIN E DRIVE MOTOR MOTOR CONTROL BOARDMotor Harness Connector Motor Phase Test Motor & Motor Control TestMotor Windings Check 1 . Disconnect power to the washer prior to testing1 . Disconnect power to the unit w i n d i n g s c h e c k S e e M o t o r W i n d i n g s C h e c kTachometer Circuit Diagnostics PHASEWIRE COLORS RESULT/SOLUTIONUNBALANCE CONTROL SYSTEM Wire ChecksTachometer Voltage FoundTub Displacement Switch Strut Displacement SwitchTesting the Tub Displacement Switch 1 . Disconnect power to the unit Testing the Strut Displacement SwitchInertial Unbalance Switch Cabinet Vibration AbsorberCabinet Vibration Sensor Testing the Inertial Unbalance SwitchSECTION 2. ELECTRICAL COMPONENTS & TESTING 2 - 11998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0SECTION 3. TROUBLESHOOTING Shuts OFF When Push-To-Start Button Re- leasedStart Line Relay Operation Runs For Five Seconds Then Shuts OFFTemperature Inputs Tumbles OnlyContinuesTo Tumble After The Wash Cycle Is Finished Third Rinse Cycle Is Always ColdDoor Leaks “Thumping” Noise In SpinTicking or Knocking Noise In Spin RF Radio Frequency InterferenceT R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 31998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 31998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 31998 Maytag Corporation 1 6 0 0 8 3 7 3 - 03 - 1 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1998 Maytag CorporationT R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 3 - 11998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING3 - 1 1998 Maytag CorporationT R O U B L E S H O O T I N G indicators of the Quick Wash and Regular washSECTION 3. TROUBLESHOOTING 3 - 1 1998 Maytag CorporationMISCELLANEOUS INFORMATION Energy UsageWasher WattagesSECTION 4. CONSOLE Disconnect power to the unitR E M O V A L VERTICAL SWITCHES Push Button HORIZONTAL SWITCHES Push-to-StartR E M O V A L R E P L A C E M E N TTIMER REMOVAL 1 . Disconnect power to the unitR E P L A C E M E N T 1998 Maytag Corporation SECTION 4. CONSOLE1 6 0 0 8 3 7 3 - 0 SECTION 5. CABINET ASSEMBLY DOOR ASSEMBLY & HINGESDISASSEMBLY R E M O V A LCabinet Vibration Absorber Door Latch HoopFRONT PANEL Disconnect power to the unitTOP COVER DOOR LOCK MECHANISMR E M O V A L 1. Remove the front panel See Front Panel RemovalFRONT SHROUD ASSEMBLY REMOVALTroubleshooting REMOVALCABINET ASSEMBLY w/REAR ACCESS PANEL Hinge RemovalR E M O V A L SECTION 5. CABINET ASSEMBLY 1998 Maytag Corporation16008373-01 SECTION 6. WATER-CARRYING COMPONENTS WATER VALVEREAR REMOVAL FRONT REMOVALWATER LEVEL PRESSURE SWITCH AIR DOME HOSEREMOVAL FROM CONSOLE REMOVAL FROM OUTER TUBDISPENSER ASSEMBLY REPLACEMENT/ROUTINGNOTE Using soap and water may lead to a potential leak 1. Disconnect power to the unitPUMP ASSEMBLY FRONT WATER FLUME INJECTOR5. Disconnect the hoses attached to the dis- penser assembly procedure is not followed properlyPump Accessory Kit CLEANING THE PUMP1. Depress the locking tab on the face of the pump housing 1. Disconnect power to the unitDRAIN HOSE R E M O V A L 1. Disconnect power to the unit5. Reverse the previous steps for replacement 1998 Maytag Corporation SECTION 6. WATER CARRYING COMPONENTS16008373-01 DOOR BOOT BAFFLESSECTION 7. OUTER TUB & SPINNER ASSEMBLY R E M O V A L 1. Disconnect power to the unitOUTER TUB COVER REPLACEMENT2. Stretch the rear lip of the door boot onto the tub cover 1. Disconnect power to the unitSPIN BASKET ASSEMBLY w/BALANCE RING R E M O V A L 1. Disconnect power to the unitDRIVE PULLEY 1. Disconnect power to the unitREPLACEMENT Figure7-6SPINNER TUB SUPPORT Disconnect power to the unitREPLACEMENT R E M O V A LSEAL SYSTEM R E M O V A L 1. Disconnect power to the unitFigure7-9 OUTER TUB ASSEMBLY COUNTER WEIGHTSBEARINGS REMOVAL OF UPPER WEIGHT 1. Disconnect power to the unitSTRUT ASSEMBLY Strut Displacement SwitchINERTIAL UNBALANCE SWITCH 1. Disconnect power to the unitTUB DISPLACEMENT SWITCH 1. Disconnect power to the unit1. Disconnect power to the unit REMOVALSECTION 7. OUTER TUB & SPINNER ASSEMBLY 1998 Maytag Corporation16008373-01 SECTION 8. MOTOR DRIVE SYSTEM DRIVE BELTDRIVE MOTOR R E M O V A LMACHINE CONTROL R E M O V A L 1 . Disconnect power to the unitR E P L A C E M E N T Console RemovalMOTOR CONTROL Disconnect power to the unitR E M O V A L R e m o v a lSECTION 8 . MOTOR DRIVE SYSYTEM 1998 Maytag Corporation1 6 0 0 8 3 7 3 - 0 SECTION 9. ELECTRICAL SCHEMATICS & TIMER I N F O R M A T I O N Prior to SeriesELECTRICAL SCHEMATICS SECTIONTIMER CHART - Prior to Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationELECTRICAL SCHEMATIC - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationTIMER CHART - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationELECTRICAL SCHEMATIC - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationTIMER CHART - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationELECTRICAL SCHEMATIC - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationN O T E S ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationCONTENTS SPECIFICATIONSDISPENSER ASSEMBLY WIRING INFORMATIONSECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS SECTION 3. BASIC MACHINE OPERATION SECTION 4. WASHER CONTROLS OVERVIEWSeries 10 MAH4000 only Series 11 & LaterSECTION 5. CYCLE REVIEW Cycle Times All Wash Time/Total Wash CycleNon-Max Cotton/SturdyStain Cycle General overview of Stain CycleThe following is an example of a Stain Cycle Suds detection during stain cycleSECTION 6. GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location16010199 Revised 7/00SECTION 7. ELECTRICAL INFORMATION electrical power to the unit vice repair procedures1. Discontinue power and water to the SECTION 8. WATER CARRYING COMPONENTS1. Disconnect power and water to the machine OPERATIONSee Figure RECIRCULATION PUMPRemoval 1. Disconnect power and water to the washer NOTE Indicator mark on hose for reinstallationDETERGENT HOSE See Figure 8-11 3. Locate the rear mounting clip on the detergent hose in the access panel opening and slide the clip off the cabinet flange. See FigureSee Figure Page SECTION 9. WIRING INFORMATION 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 10 - SCHEMATIC MAH4000 only 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 11 MAH4000 and MAH5500 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 10 - TIMER CHART MAH4000 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 11 - TIMER CHART MAH4000 & MAH5500A 16010199Revised 7/00 2000 Maytag Appliances Sales CompanyNew Century Neptune Washer Service Manual Supplement 16008373-05MAYTAG DIAGNOSTIC/HELP CODE TABELS SECTION 4. ELECTRICAL COMPONENTS & TESTINGTEARDOWN & WIRING INFORMATION Models covered in this manual supplement MAH5500B MAH7500A16010486 Revised 02/012001 Maytag Appliances Sales Company SPECIFICATIONS SECTION 1. GENERAL INFORMATIONMAH5500B CONTROL FACIA MAH7500 CONTROL FACIAGeneral Flow Of A Complete Wash Cycle BASIC MACHINE OPERATIONCYCLE SEQUENCES Wash Time TumbleWash Selections Tumbling TimeINPUT WATER TEMPERATURE Temperaturetemperature Extra Heavy, QuickFeatures of MAH5500B LED Washer Features of MAH7500 LCD WasherSECTION 2. WASHER CONTROLS OVERVIEW BASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERSTEMPERATURE MODE delay wash key will be locked outSIGNAL MODE DELAY MODEDISPLAY CHARACTERISTICS OPTIONS MODEPage 1-3 Extra Rinse Table Door Locked LEDPRESSURE SWITCH INPUT TEMPERATURE SENSOR INPUTDOOR LOCK SWITCH INPUT INPUT MODIFICATIONS DEFINEDDiagnostics OUTPUT MODIFICATIONS DEFINEDSTART/PAUSE INPUT TACH INPUTMain Wash Target Temperatures CYCLE SEQUENCE DEFINITIONSWATER VALVE OUTPUTS BLEACH DISPENSE REDISTRIBUTIONSUDS DETECTION MISCELLANEOUS DOOR LOCK PHILOSOPHYDOOR LOCK OPERATION POWER LOSS/FAILURE SPECIAL FEATURESMAH7500A ADVERTISING MODESERVICE MODE LED WasherLCD Washer 2-10Accessing Service Mode SERVICE MODE TABLE LED WasherLED WASHER SPECIAL TESTSQUICK SERVICE CYCLE 2-12Speed Range DisplayedAccessing The Help Codes BOARD INPUT TESTHELP CODES BOARD OUTPUT TESTDIAGNOSTIC CODES Section 5 DIAGNOSTIC/HELP CODE TABLESAccessing Diagnostic Codes Clearing Diagnostic Code ListACCESSING SERVICE MODE Service TestsLCD WASHER User Interface TestsService Cycle During a cycle2-16 Note This selection is valid only if a cycle is running 2-17DIAGNOSTIC/HELP CODES exit diagnostic/help codes Return toClear diagnostic codes Clear the entire list of diagnostic codes SYSTEM CHECKSection 3 DIAGNOSTIC/HELP CODE TABLES HELP CODES LISTINGHelp DescriptionHelp DescriptionTrigger Action to be TakenHelp DescriptionTrigger Action to be TakenDIAGNOSTIC CODES LISTING DiagDescription TriggerDiag DescriptionTrigger Action to be TakenDiag DescriptionTrigger Action to be TakenGENERAL COMPONENT - EXPLODED VIEW Component Identification & LocationSection 3. Teardown & Wiring Information 16010486Glossary of Terms Spin Speed - This is the speed of the washer spinner during extraction 3-10 Section 3. Teardown & Wiring Information16010486 Revised 2/01SECTION 4. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TESTSGrounded Components Water Valve TestMachine Control Board Output TestINPUT/OUTPUT VOLTAGES LCD Washer INPUT/OUTPUT VOLTAGES LED WasherMembrane Pad Checks On the MAH5500B washer you can perform the Membrane Pad Check with the control console. See Section 2 Accessing Service Mode Membrane Pad CheckLCD Washer LED WasherMotor Control Access DRIVE MOTORMOTOR CONTROL BOARD Drip Shield RemovalMotor Phases Motor Drive System TestMachine Control Board Output Test Motor & Motor Control TestHEATER ASSEMBLY Heater Will Not Turn OnThermistor Temperature Chart Heating Targets UsingUser Selections Main Wash TemperingSECTION 5. TEARDOWN & WIRING INFORMATION CONSOLE REMOVALMICROPROCESSOR BOARD REMOVAL LCD MODELCABINET ASSEMBLY CONSOLE COVER PLUGDOOR LATCH HOOP DOOR LOCK MECHANISM RemovalREAR ACCESS PANEL Removal 1. Discontinue power and water to the machinePRESSURE SWITCH WATER SYSTEM COMPONENTSPUMP ASSEMBLY HEATER ASSEMBLYREINSTALLATION REMOVALThermistor Removal SUMP COVERREMOVAL WIRING INFORMATION MAH5500BSection 5. Teardown & Wiring Information 16010486MAH7500 Section 5. Teardown & Wiring Information16010486 Revised 10/00 2001 Maytag Appliances Sales CompanyCustomer Service 240 Edwards Street, S.E Cleveland, Tennessee Maytag Appliances Sales Company