4.2Advanced-level Troubleshooting

This paragraph describes how to cure hardware and software troubles which should be carried out by qualified service personnel.

Note: This radar equipment contains complex modules in which fault diagnosis and repair down to component level are not practicable by users.

Serviceman qualification

All adjustments of radio transmitter during or coinciding with the installation, servicing, or maintenance which may affect the proper opera- tion must be performed by or under the immedi- ate supervision and responsibility of a person holding an operator certificate containing a ship radar endorsement.

This is what the U.S. Codes of Federal Regula- tions part 80.169 implies (not exact extract).

As such, every administration sets forth its own rule; service personnel must be aware of this kind of competency requirements.

Problem

Check point and probable

Remedy

 

cause

 

 

 

 

 

 

 

Power turned on but radar

1.

Blown fuse F1351

1.

Replace blown fuse.

does not operate at all.

2.

Mains voltage/polarity

2.

Correct wirings and input voltage.

Control panel is not

3.

Power Supply Board

3.

Replace Power Supply Board.

illuminated either.

4.

Illumination LEDs

4.

Replace defective LEDs.

 

 

 

 

 

CRT brilliance adjusted but

1.

INSTALL 3 menu setting

1.

Select "MAIN" for main radar.

no picture

2.

CRT voltage

 

(For further details consult a

 

3.

SPU Board

 

FURUNO agent or dealer.)

 

 

 

2.

Check high voltage supply with

 

 

 

 

utmost care.

 

 

 

3.

Replace SPU Board.

 

 

 

 

 

Antenna not rotating

1.

Power supply line of antenna

1.

Check connection and continuity

 

 

motor

 

of signal cable.

 

 

 

 

Alphanumeric data and

1. SPU Board

1.

Replace SPU Board.

marks are not displayed in

 

 

 

 

Transmit status.

 

 

 

 

 

 

 

 

 

4 – 2

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Furuno FR-8251, FR-8111 manual Advanced-level Troubleshooting, Serviceman qualification
Page 53 Page 55

FR-8251, FR-8111 specifications

Furuno has long been a leader in marine electronics, and its FR-8251 and FR-8111 radar systems continue that tradition. Both are advanced systems designed specifically for professional mariners who demand high performance, reliability, and technological sophistication in their navigational tools.

The Furuno FR-8251 is a powerful radar system that boasts a range of features tailored for commercial vessels. With a 25 kW transmitter, the FR-8251 delivers exceptional performance, providing a clearer and more detailed image of the maritime environment. It is equipped with advanced signal processing technology, including the Doppler processing feature, which allows for the detection of moving targets. This is highly beneficial for collision avoidance, as it provides accurate information regarding the speed and direction of other vessels.

Another noteworthy feature of the FR-8251 is its large, high-resolution display that enhances visibility and ease of use, even in challenging weather conditions. The user interface is straightforward, allowing for quick adjustments and easy navigation through the various settings. It supports a variety of display formats and allows for customization, enabling operators to tailor the information presented according to their specific needs.

On the other hand, the Furuno FR-8111 is equally impressive and designed as a more compact solution without sacrificing performance. This model comes with a 12 kW output and is specifically crafted for smaller vessels, yet it still delivers high-quality radar coverage. Utilizing Furuno’s renowned Automatic Target Tracker (ATT) technology, the FR-8111 enables mariners to efficiently track multiple targets, significantly enhancing situational awareness.

Additionally, both the FR-8251 and FR-8111 come with integrated ARPA (Automatic Radar Plotting Aid), providing users with sophisticated tools for navigation and collision avoidance. The presence of multiple target tracking empowers operators to make informed decisions, optimizing safety at sea.

Furuno’s commitment to reliability and durability is evident in both models, which are designed to withstand the harsh marine environment. Their robust build quality ensures longevity, while their advanced technologies offer peace of mind.

Both the Furuno FR-8251 and FR-8111 are excellent choices for professional mariners seeking cutting-edge radar systems. With their impressive performance, user-friendly interfaces, and advanced technologies, these radar systems set the standard in marine navigation, providing essential support for safe and efficient voyages.
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