Maintenance & Inspection Guide Leaded ROL™200 ... - Johnstech

Leaded ROL200SeriesTo determine if a testproblem you are experiencingis attributableto your JohnstechContactor, first answerthese 2 questions:1) Does the test socketwork when manuallytesting with theManual Actuator?2) Do the WitnessMarks from the ManualActuator test look thesame as those from theautomated test?If the answer to bothquestion is YES, thenyour test problem isprobably caused bysome variable otherthan your JohnstechContactor.If the answer to eitherquestion is NO, thenread through the checklistson these 2 pages,under the problem (inred) that you are experiencing.Figure 1: Example of PoorRegistrationPre-Maintenance TroubleshootingThis section is being provided here as a way to helpyou determine which part of your Johnstech Contactormay be inspected and/or serviced to addressa particular Test problem. This section does NOTcover Test Floor, Handler, Device or any of the othervariables that may be contributing to your Testproblem. If you still experience problems after followingthe maintenance instructions herein, contactyour local Johnstech Representative or fill-out ouronline Tech Help Form at www.johnstechhelp.com.Experiencing Yield Fall-Off?There are many reasons you may be experiencing yield falloffbut it can frequently be attributed to either Parametricor Continuity Failures.Parametric Failures are typically due to increased ContactResistance which can be caused by:• Dirty ContactsInspect Contacts per instructions on Page 15.• Worn or Damaged ElastomersInspect Elastomers per instructions on Page 15.• Device-Lead-to-Contact Alignment (See Figure 1)Inspect the Contactor Registration per instructions on Page 7.• Worn or Damaged Alignment Plate (See Figure 2)Inspect the Alignment Plate under Contactor Inspectioninstructions on Page 14.• Worn or Damaged Leadbacker/Nest (See Figure 3)Inspect the Leadbacker and Nest per instructions on Page 13.• Oxidation/Contamination of the Load BoardInspect the Load Board per instructions on Page 12.• Excessive Load Board Pad WearInspect the Load Board per instructions on Page 12.Continuity Failures are typically due to Open/Short Failureswhich can be caused by:• Excessive Loose DebrisInspect Contactor per instructions on Page 14.• Worn or Damaged ContactsInspect Contacts per instructions on Page 15.• Worn or Damaged ElastomersInspect Elastomers per instructions on Page 15.• Worn or Damaged Alignment Plate (See Figure 2)Inspect the Alignment Plate under Contactor Inspectioninstructions on Page 14.• Worn or Damaged Leadbacker/Nest (See Figure 3)Inspect the Leadbacker and Nest per instructions on Page 13.• Contamination of the Load BoardInspect the Load Board per instructions on Page 12.www.johnstech.com©2010 Johnstech International CorporationAll rights reserved.10