Question 24Electricity & Electronics - Assistant Engineer
70% to passUsing 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

The correct answer is C) The CPU assembly is malfunctioning. The reasoning is that if the gyrocompass is malfunctioning but no fault codes are present, and the DC/DC converter LED is functioning properly but the CPU LED is not blinking, this indicates an issue with the CPU assembly rather than the power supply or other components. The CPU is responsible for processing the gyrocompass data and displaying any fault codes, so a CPU malfunction would explain the observed symptoms. The other options are incorrect because a malfunctioning AC/DC power supply (A) or lack of ship's power (B) would likely affect the functioning of both the DC/DC converter and the CPU, and a malfunctioning DC/DC converter (D) would not explain the CPU LED issue.
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