Investigation summary: the affected device was received for evaluation and visual inspection was performed.The labels were undamaged, the tamper seal was missing, and the housing was damaged.Functional testing was performed, as well as an internal inspection.The customer's indicated failure was confirmed, as the device showed error code 1870.There was a disconnected cable at the optical switch.As a result, the optical switch will be replaced, along with the rear housing.The root cause for the issue could not be determined.The service history review identified there was no indication that the complaint was related to a service of the device within the review period.
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