Question 45Electricity/Electronics - 1st Asst/Chief70% to pass
Using the trouble analysis chart and faults table provided in the illustration, if the gyrocompass was malfunctioning, but no fault codes are present on the display unit, what is most likely the problem if the DC/DC converter LED status indicator is functioning properly, but the CPU LED status indicator is not blinking? Illustration EL-0195
AI Explanation
The correct answer is C) The CPU assembly is malfunctioning.
The explanation is as follows:
If the gyrocompass is malfunctioning but no fault codes are present on the display unit, and the DC/DC converter LED status indicator is functioning properly but the CPU LED status indicator is not blinking, then the issue is most likely with the CPU assembly itself. The CPU controls the overall operation of the gyrocompass system, so a malfunction in the CPU would prevent the system from properly reporting any fault codes or fully operating the gyrocompass.
The other options are incorrect because a malfunctioning DC/DC converter would not affect the CPU LED, and issues with the AC/DC power supply or lack of ship's power would likely result in both LED indicators not functioning properly.
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