The customer reported that the system froze and would not respond to the touch screen, remote control, or standby switch prior to a procedure.The company representative examined the system and replaced a host module to address the reported problem.The system was then tested and met all product specifications.A host module was received and a visual assessment of the returned host module did not reveal any non-conformity.The returned host module was installed onto a calibrated system.The system was turned on via the standby switch and allowed to boot.The system turned on and successfully booted.Various system modes and parameters were manually activated via the touch screen.The system modes and parameters responded normally when activated and no system froze occurred.Various system modes and parameters were activated via the remote control.The system modes and parameters responded normally when activated and no system froze occurred.The system was shut down via the standby switch.The system responded to the standby switch action and shut down normally.Testing was performed approximately 30 minutes.The returned host module functioned normally and no system freeze occurred during testing.The system was manufactured on january 31, 2007.Based on qa assessment, the product met specifications at the time of release.The returned host module functioned properly; therefore, the root cause of the reported events cannot be established.(b)(4).
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