The subject device was returned to (b)(4) factory for evaluation.When the subject device was connected to a video system center at (b)(4) factory, the reported phenomenon was not reproduced.As a result of confirmation of the channel inside of the subject device, some pinholes were found at the place of around 40mm from the distal end and air leakage occurred from the pinholes.From the above, it is considered that this phenomenon might occur because moisture and water were invaded from the pinholes in the channel and the internal circuit of ccd unit temporarily short-circuited.It is considered that the short of the internal circuit of the ccd unit was caused by the insufficient maintenance of the subject device by the user facility, which had continued using such device with air leakage.
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