Maintenance & Inspection Guide Edge 400A Series - Johnstech

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Edge 400a SeriesCleaning & Maintenance Frequencywww.johnstech.com©2009 Johnstech International CorporationAll rights reserved.8Determining Maintenance FrequencyDue to a wide range of variables (like those called out below),each Test Floor needs to determine their own optimal cleaningand maintenance intervals. Careful monitoring/recording ofyield rates and following test floor troubleshooting procedureswill help to differentiate between interface or maintenanceproblems and an effective maintenance cleaning cycle can beestablished for each Test Floor. Contact your Johnstech representativeor Field Service for further information or help.Suggested Cleaning & Maintenance Frequency100K 250K 400K 500K 650K 750KInspect Alignment Towers X XReplace Alignment TowersXInspect Guide Rails X XReplace Guide RailsXInspect Contacts X X X X X XReplace ContactsXInspect Elastomers X X X X X XReplace Elastomers X X XInspect Voltage Key X X XReplace Voltage KeyXInspect Housing X X X X X XCheck & Clean Load Board X X X X X XHandler Design and SetupEach Handler has its own unique attributes: test plane configurations,device transportation methods, plunge mechanismsand accessories. Handler set-ups that are not optimized canincrease your required maintenance frequency by contributingto premature Contactor, Contact, Elastomer and Voltage Keywear. By working with Johnstech and your Handler supplier,you can optimize Handler performance to minimize downtime.PositioningThe Module Y positioning to the Contactor Guide Rail Slot isrequired to be within 0.25mm (0.01 inches) true position andparellelism. The Module X position to the Voltage Key is tobe within +/-0.375mm (0.015 inches) from center of the Key.This positioning allows proper and accurate insertion, minimizingdamage and wear of the Guide Rails, Alignment Towers,Voltage Key, Contacts and Overtravel Stops; and prevents ModuleBoard debris collecting in the Contact area. See Page 16.Module VariationsVariations in Module dimensions, thickness, warpage, vendors,lots, pad compositions, etc... can affect your test results and,consequently, your maintenance schedule. A variation willaffect the amounts of FR-4 debris which causes increased wearon the Contact Assembly and alter Module placement.General Test Floor Maintenance ActivitiesThe frequency of Handler maintenance also affects Contactorcleaning. For example, how often the Handler and Test Areasare blown free of debris impacts the effectiveness of theContactor. Contactors exposed to increased levels of foreigndebris are likely to require more frequent maintenance andcleaning and result in lower First-Pass Yields.
Recommended Maintenance ToolsEdge 400a SeriesScrewdriver with Allen-Head Bits— for removing orfastening Contactor to Load Board10X Eye Loupe— for magnified inspection of Contactorand Components, while on Load BoardElastomer Tool— for use in Elastomer InstallationFine-Tip Non-Metallic Tweezers— for handling Contactsand ElastomersScalpel— for marking Elastomer lengthsMicro Scissors— for cutting Elastomers to lengthProbe Tool— for use in Elastomer InstallationFiberglass Brush and Replacement Tips— recommendedfor cleaning Contacts (If fiberglass brushes are notallowed on your Test Floor, although not optimum, nylonbrushes can be substituted.)Microscope— 10X minimum for inspecting and/or rebuildingContactorEXTRAS:Finger Cots— recommended to prevent contaminating Contactorcomponents with skin oilsProtective Eyewear— recommended to protect from TestFloor/Contactor components, Compressed Air and chemicalsRecommended Tools(in order at left)CAUTION: Avoid touchingthe Device- and LoadBoard-interface surfacesof the Contacts withmetal tools. Scratcheson these areas maydegrade performance.Johnstech’s Maintenance & Inspection KitJohnstech’s Maintenance & Inspection Kit contains many ofthe tools needed for maintenance and inspection and are designedespecially for Johnstech high performance Contactors.Contact your Johnstech representative for more information.Maintenance Kit Part Numbers—with torque screwdriver: 706449without torque screwdriver: 7064489www.johnstech.com©2009 Johnstech International CorporationAll rights reserved.
Page 1 and 2: Maintenance& InspectionGuideEdge 40
Page 3 and 4: Table of ContentsEdge 400a SeriesSt
Page 5 and 6: Contactor ComponentsEdge 400a Serie
Page 7: Contactor Configuration & Verificat
Page 11 and 12: Contactor Installation and RemovalE
Page 13 and 14: Contactor/Component InspectionEdge
Page 15 and 16: Contactor/Component InspectionEdge
Page 17 and 18: TroubleshootingEdge 400a SeriesThis
Page 19 and 20: Contactor CleaningEdge 400a SeriesT
Page 21 and 22: Contactor ReassemblyEdge 400a Serie
Page 23 and 24: NotesEdge 400a Series23©2009 Johns

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