Service Manual

GEARS
TheSystematicapproachtodening,diagnosingandsolvingproblems.
GatherInformation
Informationreportedbythecustomer
Informationobservedbyyou
G
Establishthewhat,whereandwhenoftheissue
EvaluatePotentialCauses
Considerpossiblecausesoftheproblemtodevelopahypothesis
E
Narrowdownthefocusoftheproblem
AssessPerformance
Ensureyouhaveallthenecessarytoolsfortesting
Testallpotentialcausesofthefailure
A
Reevaluateandcreatenewhypothesesifnecessary
Repair
R
Returntheunittoservicebyrepairing,rebuildingorreplacing
SolutionConrmation
Didtheissuegoaway
Wastherootcauseoftheissuecorrectlyrepaired
S
Arethereanyothernewsymptoms
Troubleshooting:GeneralTroubleshooting
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POWERMAX®HDServiceManual
3424-820RevA