37Keysight 16452A Liquid Test FixtureOperation and Service Manual4 ServiceIntroductionThis chapter covers assembly replacement and troubleshooting information.Assembly ReplacementTable 4-1, Table 4-2, and Table 4-3 list the support parts for RoHS andnon-RoHS compliance 16452A Liquid Test Fixture. All the listed items arechanged at RoHS conversion. Due to limited availability of RoHS compliancestation and technical difficulties in RoHS soldering, only parts and supportlevel that do not require RoHS soldering are supported. For RoHS CompliantUpper Level Assembly Replacement Part, if multiple parts are replaced by acommon higher assembly part, only order ONE part of the higher levelcommon assembly. If the original support part (Non-RoHS CompliantReplacement Part is obsolete, replaced the part by a higher common RoHSCompliant assembly part. The parts listed can be ordered from your nearestKeysight Technologies Office. Ordering information must include the Keysightpart number and the required quantity.Serial Number for Non-RoHS 16452A:JP44100001 – JP44299999/MY44100001 – MY44200319/SG44100001 – SG44200319Serial Number for RoHS 16452A:MY44200320 and above/SG44200320 and aboveThese servicing instructions are for use by qualified personnel only. DoNOT perform any servicing (other than that contained in the operatingsection) unless you are qualified to do so.