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For this unit (m2000sp instrument sn 11137), damage to the pcba optibo dcu freedom evo occurred due to an incorrect connection due to a likely use error.The overall product as designed, per safety standard iec/en 61010-1, continues to perform as expected.The damage to pcba optibo dcu freedom evo failed safe, was contained and self-extinguished.Engineering controls in place to ensure safety contained this incident and prevented the spread of fire as intended.Investigation into this complaint included an existing data review, a quality data review, a complaint history review and a service history / instrument evaluation.Investigation is summarized as follows: existing data review of applicable labeling verified certification to appropriate safety standards and adequate information is provided for troubleshooting, replacement and verification of the optibo after replacement.Quality data review/ complaint review: over the last two years, no related non-conformance, corrective action preventative actions (capa) or complaints were identified for evidence of overheating/charring on the optibo in the m2000sp e-series instrument list number 09k14-02.Service history review / instrument evaluation: field service engineer (fse) on-site troubleshooting found evidence of overheating on the optibo and attached photographs to the complaint ticket.Photographs were reviewed and showed visible damage (charring) to the option 1 9-pin 'd' connector.No other damage to cabling or connections was observed.Damage to the optibo likely resulted from connection of a null-modem communication cable from the scc to option 1 on the optibo.Service history of the host instrument did not contain any other optibo-related issues.Service history shows instrument function was documented after preventive maintenance in august 2017.Because the customer contacted the call center to report the instrument was offline, this issue was the result of customer-site activity and not an incorrect configuration by the fse.Communication cable connections to the instrument are intended to be performed by the fse only.The circuit board with this communication connection is located above the obtibo behind the normally closed metal access door.The m2000sp is a serialized device for which samples and replacement spare parts are not retained.Returns were available but not requested by am.There was sufficient activity comment information along with a detailed photograph to complete this investigation.Based on the results of the investigation, no product deficiency was found.The optibo failed safe because engineering controls were in place with conformity to iec 61010-1 requirements.
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