The spain customer reported "weak staining on some slides due to reagent not being dispensed properly".Fse (field service engineer) inspected the instrument and found aspiration and dispense check valve leaking.Fse replaced aspiration and dispense check valve which resolved this malfunction.The customer was able to complete staining.The instrument is fully operational, within specification, and ready for use.Diagnostics were not altered.There was no direct or indirect patient harm or user harm reported.
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