FAILURE CODES AND WIRING DIAGRAMS For MAYTAG
MC-1TECHNICAL EDUCATIONFAILURE CODES ANDWIRING DIAGRAMSforMAYTAG HERITAGEGAS & ELECTRIC RANGESJOB AID 8178713
FORWARDThis Maytag Heritage Job Aid, “Failure Codes And Wiring Diagrams For Gas & Electric Ranges,”(Part No. 8178713), provides the technician with information on Diagnosing and Troubleshooting Maytag Heritage Gas & Electric Ranges. It is to be used as a training Job Aid. For specificinformation on the model being serviced, refer to the “Use and Care Guide,” or “Tech Sheet”provided with the unit.The Wiring Diagrams used in this Job Aid are typical and should be used for training purposesonly. Always use the Wiring Diagram supplied with the product when servicing the unit.GOALS AND OBJECTIVESThe goal of this Job Aid is to provide detailed information that will enable the In-Home ServiceProfessionals to properly diagnose malfunctions and repair Maytag Heritage Ranges.The objectives of this Job Aid are to: Successfully troubleshoot and diagnose malfunctions. Offer Electronic Oven Control information.WHIRLPOOL CORPORATION assumes no responsibility for any repairs madeon our products by anyone other than In-Home Service Professionals.Copyright 2008, Whirlpool Corporation, Benton Harbor, MI 49022- ii -
TABLE OF CONTENTSPageGENERAL . 1-1Gas & Electric Range Safety. 1-1Cooking Nomenclature. 1-2Model & Serial Number Label And Wiring Diagram Locations. 1-3Description of Error Codes. 2-1NSC (Non-Self Cleaning) Controls. 3-1H1 Controls. 4-1H2 Controls. 5-1H2.5 Controls. 6-1H3 Controls. 7-1M1/M2 Controls. 8-1EOC III Controls. 9-1UH Controls. 10-1- iii -
FamilyControl Part #Model #ApplicationTech SheetPage 2NSC8507P347-60AER4311AAWElectric F/S Range160264653-4NSC8507P348-60AER4311ACWElectric F/S Range160264653-4M18507P304-60AER5511AAWElectric F/S Range160235308-4M18507P304-60AER5511ACWElectric F/S Range160235398-4M18507P304-60AER5511BAWElectric F/S Range160266868-4M18507P304-60AER5512AAWElectric F/S Range160235308-4M18507P252-60AER5515QAWElectric F/S Range160256458-7M18507P252-60AER5515QCWElectric F/S Range160268538-14M18507P252-60AER5515RCWElectric F/S Range160272368-17M18507P304-60AER5710BAHElectric F/S Range160268138-4M18507P304-60AER5712AAWElectric F/S Range160235318-4M18507P304-60AER5712ACWElectric F/S Range160235428-4M18507P304-60AER5712BAWElectric F/S Range160266888-4M18507P252-60AER5715QAWElectric F/S Range160256468-7M18507P252-60AER5715QCWElectric F/S Range160233198-3M18507P252-60AER5715RCWElectric F/S Range160272318-17M18507P304-60AER5722BAWElectric F/S Range160266918-4M18507P304-60AER5722CASElectric F/S Range160270748-4M18507P252-60AER5725QAWElectric F/S Range160272278-17M28507P253-60AER5735QAWElectric F/S Range160256488-7H18507P293-60AER5815RCWElectric F/S Range160272334-22H18507P356-60AER5845QABElectric F/S Range160224924-15H18507P356-60AER5845RAWElectric F/S Range160272324-21M18507P239-60AES1350BAWElectric Slide-In Range160262948-10M28507P260-60AES3760BAWElectric F/S Range160262958-11H18507P260-60AES3760BCWElectric F/S Range160262984-16H18507P305-60AES5730BABElectric Slide-In Range160262964-16H18507P286-60AEW3530DDWElectric Wall Oven160225074-9H2.58507P325-60AEW3630DDWElectric Wall Oven160225115-5H18507P287-60AEW4530DDWElectric Wall Oven160225074-9H2.58507P326-60AEW4630DDWElectric Wall Oven160225115-5NSC8507P348-60AGR4412ADWGas F/S Range160267633-7M18507P250-60AGR5712ADWGas F/S Range160235248-6M18507P250-60AGR5712BDWGas F/S Range160266848-6- iv -
FamilyControl Part #Model #ApplicationTech SheetPage #M18507P254-60AGR5715QDWGas F/S Range160272228-16M28507P255-60AGR5725QDWGas F/S Range160225008-5M18507P254-60AGR5725RDWGas F/S Range160267978-13M18507P254-60AGR5725SDSGas F/S Range160272468-16M28507P255-60AGR5735QDWGas F/S Range160225008-5H18507P292-60AGR5825RDWGas F/S Range160268514-18H18507P292-60AGR5835QDWGas F/S Range160225014-8M18507P259-60AGS1740BDWGas Slide-In Range160262898-8M28507P261-60AGS3760BDWGas Slide-In Range160262908-9H18507P306-60AGS5730BDWGas Slide-In Range160262914-11M18507P254-60ALR5715QDWGas F/S Range LP160272258-18NSC8507P347-60CE35400AAVElectric F/S Range160264653-4NSC8507P347-60CE35400ACVElectric F/S Range160235353-4M18507P304-60CE38600AAWElectric F/S Range160235308-4M18507P304-60CE38600ACVElectric F/S Range160235398-4M18507P304-60CE38800AAWElectric F/S Range160235348-4M18507P304-60CE38800ACSElectric F/S Range160234818-4M18507P304-60CE38800BASElectric F/S Range160269788-4NSC8507P347-60CER1125AAWElectric F/S Range160264653-4NSC8507P347-60CER1125ACWElectric F/S Range160235353-5M18507P304-60CER3525AAWElectric F/S Range160235308-4M18507P304-60CER3525ACWElectric F/S Range160235398-4M18507P304-60CER3725AAWElectric F/S Range160235318-4M18507P304-60CER3725ACWElectric F/S Range160235428-4NSC8507P349-60CER3725AGWElectric F/S Range160268383-8NSC8507P349-60CER4351AGWElectric F/S Range160263003-6M18507P240-60CES3759BCWElectric Slide-In Range160272218-15NSC8507P348-60CG31600ADVGas F/S Range160267633-7M18507P250-60CG34800ADWGas F/S Range160235248-6M18507P250-60CG34800BDSGas F/S Range160267918-12NSC8507P348-60CGR1425ADWGas F/S Range160267633-7M18507P250-60CGR3725ADWGas F/S Range160235248-6M18507P250-60CGR3726ADWGas F/S Range160265518-6NSC8507P348-60CP31600ADVGas F/S Range160267633-7H18507P389-60GW397LXUBGas Slide-In RangeH18507P391-60GW399LXUBGas Slide-In Range160262914-15H18507P390-60GY397LXUBElectric Slide-In RangeH18507P392-60GY399LXUBElectric Slide-In Range160262964-16-v-
FamilyControl Part #Model #ApplicationTech SheetPage #H2.58507P302-60JDR8895AAWDouble Oven Dual Fuel160234606-8H2.58507P302-60JDR8895ACWDouble Oven Dual Fuel160234606-8EOCIII8507P333-60JDR8895RDWDouble Oven Dual Fuel16023506EOCIII8507P230-60JDS8850BDWDual Fuel l Fuel l Fuel l Fuel ctric F/S ic F/S Range160273069-17H18507P279-60JER8885QABElectric F/S Range160272269-19H18507P279-60JER8885QCBElectric F/S Range160272244-14U38507P386-60JER8885RABElectric F/S ic F/S ic ctric ctric ctric ctric D/D ctric ctric D/D ctric Slide-In160270139-15H18507P289-60JGR8775QDWGas F/S Range160225024-8EOCIII8507P351-60JGR8775RDWGas Freestanding Range160273099-19H18507P290-60JGR8875QDWGas F/S Range160225034-10EOCIII8507P351-60JGR8875RDWGas Freestanding Range160273109-20EOCIII8507P351-60JGR8885RDPGas Freestanding Range160272489-16EOCIII8507P227-60JGS8750BDWGas Slide-In160269249-13EOCIII8507P228-60JGS8850BDWGas Slide-In160269249-13EOCIII8507P229-60JGS8860BDPGas Slide-In160269249-13EOCIII8507P236-60JGS9900BDBGas Slide-In160269259-13H18507P085-60JGW8130DDWGas Wall Oven160225154-13H18507P090-60JJW7530DDWElectric Wall Oven160225084-12H18507P285-60JJW8130DDWElectric Wall Oven160225074-9H2.58507P324-60JJW8230DDWElectric Wall Oven160225115-5M18507P345-60JJW8527DDWElectric Wall Oven160261018-6M18507P263-60JJW8530DDWElectric Wall Oven160261018-6UH8507P364-60JJW8627DDWElectric Wall Oven1602251210-4UH8507P364-60JJW8630DDWElectric Wall Oven1602251210-4H18507P291-60JJW9130DDWElectric Wall Oven160265454-9H2.58507P327-60JJW9230DDWElectric Wall Oven160265465-5- vi -
FamilyControl Part #Model #ApplicationTech SheetPage #H18507P291-60JJW9330DDBElectric Wall Oven160265454-9H2.58507P360-60JJW9430DDBElectric Wall Oven160265465-5UH8507P264-60JJW9527DDWElectric Wall Oven1602610110-5UH8507P338-60JJW9530DDPElectric Wall Oven1602610010-8UH8507P264-60JJW9530DDWElectric Wall Oven1602610110-5UH8507P363-60JJW9627DDWElectric Wall Oven1602251210-4UH8507P363-60JJW9630DDWElectric Wall Oven1602251210-4UH8507P361-60JJW9827DDPElectric Wall Oven1602610010-8UH8507P342-60JJW9827DDWElectric Wall Oven1602251210-4UH8507P361-60JJW9830DDPElectric Wall Oven1602610010-8UH8507P362-60JJW9830DDWElectric Wall Oven1602251210-4H18507P285-60JMW8130DAWElectric Wall Oven w/MW160265684-17H18507P285-60JMW8330DAWElectric Wall Oven w/MW160265684-17UH8507P263-60JMW8527DAWElectric Wall Oven w/MW1602282310-5UH8507P263-60JMW8530DAWElectric Wall Oven w/MW1602282310-5UH8507P345-60JMW8530DAWElec. Wall Oven w/MW1602282310-5H18507P291-60JMW9130DAWElectric Wall Oven w/MW160265694-17H18507P291-60JMW9330DAWElectric Wall Oven w/MW160265694-17UH8507P264-60JMW9527DAWElectric Wall Oven w/MW1602282310-5UH8507P346-60JMW9527DAWElec. Wall Oven w/MW1602282310-5UH8507P264-60JMW9530DAWElectric Wall Oven w/MW1602282310-5UH8507P346-60JMW9530DAWElec. Wall Oven w/MW1602282310-5M18507P304-60LER3330AAWElectric F/S Range160261058-4M18507P250-60LGR3330ADWGas F/S Range160261068-12NSC8507P350-60LLR4451AJWGas F/S Range160267653-7H18507P299-60MEP5775BABElectric Slide-In Range160262974-16NSC8507P347-60MER4351AAWElectric F/S Range160264653-4NSC8507P347-60MER4351ACWElectric F/S Range160264653-4NSC8507P349-60MER4351AGWElectric F/S Range160265353-5M18507P304-60MER5520AAWElectric F/S Range160266868-4M18507P304-60MER5551AAWElectric F/S Range160235308-4M18507P304-60MER5551BAWElectric F/S Range160266868-4M18507P304-60MER5552AAWElectric F/S Range160235308-4M18507P249-60MER5552ACWElectric F/S Range160235308-4M18507P304-60MER5552BAWElectric F/S Range160266868-4M18507P252-60MER5555QAWElectric F/S Range160256458-7M18507P252-60MER5555QCWElectric F/S Range160233188-3M18507P252-60MER5555RCWElectric F/S Range160272378-17M18507P304-60MER5751AAWElectric F/S Range160235318-4M18507P304-60MER5751ACWElectric F/S Range160265438-4- vii -
FamilyControl Part #Model #ApplicationTech SheetPage #M18507P304-60MER5751BABElectric F/S Range160266888-4M18507P304-60MER5752AAWElectric F/S Range160235318-4M18507P304-60MER5752ACWElectric F/S Range160235428-4M18507P304-60MER5752BAWElectric F/S Range160266888-4M18507P252-60MER5754QAWElectric F/S Range160256468-7M18507P252-60MER5755QAWElectric F/S Range160256468-7M18507P252-60MER5755QCWElectric F/S Range160233198-3M18507P252-60MER5765QAWElectric F/S Range160256498-7M18507P252-60MER5765RAWElectric F/S Range160272478-17M18507P252-60MER5765RCWElectric F/S Range160272318-17M28507P253-60MER5775QAWElectric F/S Range160256488-7M28507P253-60MER5775QCWElectric F/S Range160233208-3M28507P253-60MER5775RAWElectric F/S Range160272308-17M28507P253-60MER5775RCBElectric F/S Range160272458-17H18507P277-60MER5875QABElectric F/S Range160224964-19H18507P069-60MER5875QCWElectric F/S Range160233214-14H18507P355-60MER5875RABElectric F/S Range160272294-20H18507P355-60MER5875RCWElectric F/S Range160272334-22M18507P307-60MER6541BAWDouble Oven Electric Range160272558-19H38507P272-60MER6555AAWDouble Oven Electric Range160234597-9H38507P272-60MER6555ACWDouble Oven Electric Range160234597-9M18507P307-60MER6741BAWDouble Oven Electric Range160272558-19H38507P272-60MER6751AAWDouble Oven Electric Range160234597-9M18507P307-60MER6752BAWDouble Oven Electric Range160272558-19H38507P272-60MER6755AAWDouble Oven Electric Range160234597-9H38507P272-60MER6755ACWDouble Oven Electric Range160234597-9H38507P272-60MER6765BAWDouble Oven Electric Range160273597-9H38507P272-60MER6775AAWDouble Oven Electric Range160234597-9H38507P272-60MER6775ACBDouble Oven Electric Range160261517-9H38507P272-60MER6775BABDouble Oven Electric Range160273607-9H38507P272-60MER6775BCWDouble Oven Electric Range160273607-9H2.58507P203-60MER6875AAWDouble Oven Electric Range160261506-9H2.58507P301-60MER6875AAWDouble Oven Electric Range160261506-9H2.58507P203-60MER6875ACWDouble Oven Electric Range160261506-9H2.58507P301-60MER6875ACWDouble Oven Electric 60MERH752BAWElectric F/S Range160266888-4M18507P304-60MERH752CASElectric F/S 60MERL752BAWElectric F/S 60MERM752BAWElectric F/S Range160266888-4- viii -
FamilyControl Part #Model #ApplicationTech SheetPage #M18507P304-60MERS751BAWElectric F/S Range160270758-4M18507P252-60MERS755RAWElectric F/S Range160272478-17H18507P237-60MES5775BABElectric Slide-In Range160262974-16H18507P237-60MES5775BCWElectric Slide-In Range160262984-16H18507P276-60MES5875BABElectric Slide-In Range160262974-16H18507P276-60MES5875BCBElectric Slide-In Range160262984-16H18507P280-60MEW5527DDWElectric Wall Oven160225074-9H18507P281-60MEW5530DDWElectric Wall Oven160225074-9H2.58507P320-60MEW5627DDWElectric Wall Oven160225114-9H18507P086-60MEW5627DDWElectric Wall Oven160225115-5H2.58507P321-60MEW5630DDWElectric Wall Oven160225115-5H18507P087-60MEW5630DDWElectric Wall Oven160225115-5H18507P282-60MEW6527DDWElectric Wall Oven160225074-9H18507P283-60MEW6530DDWElectric Wall Oven160225074-9H2.58507P088-60MEW6627DDWElectric Wall Oven160225115-5H2.58507P089-60MEW6630DDWElectric Wall Oven160225115-5NSC8507P348-60MGR4451ADWGas F/S Range160267633-7NSC8507P250-60MGR4451BDSGas F/S Range160266853-7NSC8507P348-60MGR4451BDWGas F/S Range160266853-7NSC8507P348-60MGR4452ADWGas F/S Range160267633-7NSC8507P348-60MGR4452BDWGas F/S Range160266853-7M18507P250-60MGR5751ADWGas F/S Range160235248-6M18507P250-60MGR5751BDWGas F/S Range160266838-6M18507P250-60MGR5752ADWGas F/S Range160235248-6M18507P250-60MGR5752BDWGas F/S Range160235248-6M18507P254-60MGR5754QDWGas F/S Range160272228-16M18507P254-60MGR5755QDWGas F/S Range160272228-16M18507P254-60MGR5765QDWGas F/S Range160272228-16M28507P255-60MGR5775QDWGas F/S Range160225048-5H18507P288-60MGR5875QDWGas Freestanding Range160225054-11H38507P262-60MGR6751BDWDouble Oven Gas Range160273627-8H38507P262-60MGR6775ADWDouble Oven Gas Range160234587-8H38507P262-60MGR6775BDWDouble Oven Gas Range160273637-10H2.58507P204-60MGR6875ADWDouble Oven Gas Range160273646-10H2.58507P300-60MGR6875ADWDouble Oven Gas Range160273646-10M18507P250-60MGRH752BDWGas F/S Range160266848-6H18507P358-60MGRH865QDWGas F/S RangeM18507P250-60MGRL752BDWGas F/S Range160266848-6M18507P250-60MGRL753BDSGas F/S Range160266848-6M18507P250-60MGRM752BDWGas F/S Range160266838-6M18507P250-60MGRS752BDWGas F/S Range160266838-6- ix -
FamilyControl Part #Model #ApplicationTech SheetPage #M18507P258-60MGS5752BDWGas F/S Range160262908-9H18507P256-60MGS5775BDWGas Slide-In Range160262924-15H18507P275-60MGS5875BDWGas Slide-In Range160262924-15NSC8507P350-60MLR4451AJQGas F/S Range160267653-7NSC8507P350-60MLR4451AJSGas F/S Range160267653-7NSC8507P350-60MLR4451AJWGas F/S Range160267653-7M18507P254-60MLR5755QDWGas F/S Range160272258-18H18507P281-60MMW5530DAWElectric Wall Oven w/MW160262754-17NSC8507P347-60PER1125ACWElectric F/S Range160264863-5M18507P304-60PER3524ACWElectric F/S Range160264858-4M18507P304-60PER3525ACWElectric F/S Range160264858-4M18507P304-60PER3724ACWElectric F/S Range160264848-4M18507P304-60PER3725ACWElectric F/S Range160264848-4NSC8507P347-60PER4311ACWElectric F/S Range160235353-5M18507P304-60PER5720ACWElectric F/S Range160234818-4M18507P304-60PER5720LAWElectric F/S Range160235348-4M18507P252-60PER5750QAWElectric F/S Range160256508-7M18507P252-60PER5750QCWElectric F/S 60PERL451AABM18507P304-60PERL451ACWElectric F/S Range16026687M18507P258-60PGS3759BDWGas Slide-In Range160267928-12NSC8507P348-60PGR4420LDWGas F/S Range160267633-7M18507P250-60PGR5720LDWGas F/S Range160235248-6M18507P254-60PGR5750LDWGas F/S 330DTUH8507P211-60RJDO2702AElectric Wall Oven1602588510-7UH8507P210-60RJDO2703AElectric Wall Oven1602588510-7UH8507P211-60RJDO3002AElectric Wall Oven1602588510-7UH8507P210-60RJDO3003AElectric Wall Oven1602588510-7UH8507P209-60RJSO2701AElectric Wall Oven1602588410-6UH8507P209-60RJSO3001AElectric Wall Oven1602588410-6M18507P240-60RS160LXTBElectric Slide-In Range160262948-10M18507P240-60RY160LXTBElectric Slide-In Range160262948-10-x-
GENERALGAS & ELECTRIC RANGE SAFETYYour safety and the safety of others are very important.We have provided many important safety messages in this manual and on the appliance.Always read and obey all safety messages.This is the safety alert symbol.This symbol alerts you to potential hazards that can kill or hurt you and others.All safety messages will follow the safety alert symbol and either the word“DANGER” or “WARNING.” These words mean:DANGERYou can be killed or seriously injured if you don’timmediately follow instructions.WARNINGYou can be killed or seriously injured if you don’tfollow instructions.All safety messages will tell you what the potential hazard is, tell you how to reduce the chanceof injury, and tell you what can happen if the instructions are not followed.1-1
Cooking NomenclatureMRH167AmanaMagic ChefGraffer STVWYZEFuelColorAlmond on AlmondBlackBrushed ChromeTraditional WhiteTraditional AlmondProstyleMonochromatic BisqueStainlessTraditional BisqueWhite on WhiteFrost White (True Color White)Natural Bisque (True Color Bisque)ACDGMPButaneDual FuelElectricGas, NaturalLiquid PropaneMicrowaveStanding PilotNo FuelWarming DrawerWXListingUL/AGACSA/CGA/CULDual Listed220-240 V / 50-60 HzMilitary ModelPSB Approved(Singapore)Export 120 V / 60 HzProduction CodeProduct TypeAccessory/CartridgeCooktop Updraft/CountertopDowndraft Cooktop or Warming DrawerEyelevel RangeGrillRange (20")Range (36")Drop In (24")National AccountsWall Oven (27")Range, Free-Standing (30")B Best BuySlide-In (30")H Home DepotRange HoodS SearsOTRWall OvenRV RangeRV Top1-2This identifies theproduction version.Feature naJenn Air
Serial Number IdentificationThere are three parts which Identifies the Serial Number. Series/Run Number – Indicates a specific product design. These two digits can be either alpha or numeric characters. Serial Identity – Identifies the number assigned to a product. Date Code – Indicates the month and year in which the product was built.SERIAL NUMBER IDENTIFICATIONSeries/RunNumberXXMODEL NO.C236BSerialIdentityXXXXXXSERIAL NO.XXXXXXXXXXXXRATING8.03KW120/240VACDO NOT CLEAN THIS LABELNOTE:Da
This Maytag Heritage Job Aid, “Failure Codes And Wiring Diagrams For Gas & Electric Ranges,” (Part No. 8178713), provides the technician with information on Diagnosing and Troubleshoot-ing Maytag Heritage Gas & Electric Ran
wiring your motor p.06 9.1 nema three-phase wiring diagrams p.07 9.1.1 nema brake motor wiring diagrams p.08 9.2 iec three-phase wiring diagrams p.09 9.2.1 iec brake motor wiring diagrams p.10 9.3 nema farm duty wiring diagrams p.11 9.4 nema single-phase wiring diagrams p.12 9.5 iec single-phase wir
4 Wiring Diagrams TP-6712 4/10 Wiring Diagrams Use the Wiring Diagram Cross-Reference chart to determine the wiring diagram version number for a given model number and spec number. Then find that version number, the controller type, and the alternator type on the Wiring Diagrams Reference chart to determine the wiring diagram numbers for your unit.
TYPES OF ELECTRICAL WIRING There are following types of electrical wiring. 1. Cleat wiring or Temporary wiring 2. Wooden or Batten wiring 3. Casing and Capping 4. Conduit Wiring 5. Trunking Wiring 1 Cleat Wiring or Temporary Wiring AIR UNIVERSITY, PAF COMPLEX E-9, ISLAMABAD It is a temporary wiring used for function and construction work.
Chrysler - Sebring 4D Sedan USING MITCHELL1'S WIRING DIAGRAMS For information on using these wiring diagrams, see USING MITCHELL1'S SYSTEM WIRING DIAGRAMS article. AIR CONDITIONING 2007 Chrysler Sebring Limited 2007 SYSTEM WIRING DIAGRAMS Chrysler - Sebring 4D Sedan me
Mazda - MX-5 Miata USING MITCHELL1'S WIRING DIAGRAMS For information on using these wiring diagrams, see USING MITCHELL1'S SYSTEM WIRING DIAGRAMS article. AIR CONDITIONING MITCHELL 1 ARTICLE - 2004 SYSTEM WIRING DIAGRAMS Mazda - MX-5 Miata Page 1 of 36
8 C 01000 AT6-18F(Z) with COS Air Handler diagram Air Handler Wiring Diagrams - Table of Contents. L-2295B Air Handler Wiring Diagrams 4. L-2295B Air Handler Wiring Diagrams 5. L-2295B Air Handler Wiring Diagrams 6 DWG CREATED BY CAD618-03 TRANS L2 LABEL BLOCK TERMINAL L1 NC COMP L 1 COMP FAN PUMPPUMP L 2 L 2 L 2 L 1 VALVE FAN
a time period. There are seven behavioral diagrams: Use Case Diagrams, Activity Diagrams, State Machine Diagrams, Communication Diagrams, Sequence Diagrams, Timing Diagrams and Interaction Overview Diagrams. UML 2 has introduced Composite Structure, Object, Timing and Interaction Overview diagrams.
node diagrams (N diagrams), node-link diagrams (NL diagrams) and node-link-groups diagrams (NLG diagrams). Each of these diagrams extends the previous one by making more explicit a characteristic of the input data. In N diagrams, a set of objects is depicted as points in a two or three dimensional space; see Figure1a. Clusters are typically .
