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Furuno FR-2125 Service Manual

Furuno FR-2125
151 pages
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MARINE RADAR
FR-2115/2125
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Furuno FR-2125 Specifications

General IconGeneral
Display Size10.4 inches
Power Output4 kW
Antenna TypeOpen Array
Power Supply24 VDC
Frequency9410 MHz ± 30 MHz
Range Scales0.125 to 96 NM
WeightApprox. 25 kg
Antenna Length6 feet
Beamwidth1.9° (Horizontal)
Rotation Speed24 RPM

Summary

Chapter 1. GENERAL

Chapter 2. BLOCK DESCRIPTION

2.5 Start-up Sequence

Outlines the step-by-step process the radar follows upon power-up.

2.10 Auto Tuning Function

Explains the automatic system for optimizing receiver performance.

ARPA target acquisition and Tracking

Details the conditions and methods for acquiring and tracking radar targets.

Power Supply Circuit (DC)

Explains the DC power supply circuit and its components.

Power Supply Circuit (AC)

Explains the AC power supply circuit and its components.

Chapter 3. ADJUSTMENT

3.1 Adjustment (Display Unit)

Guides on adjusting parameters within the radar's display unit.

3.5 Adjustment of CRT

Details the procedure for adjusting the Cathode Ray Tube display.

3.2 Adjustment (Scanner Unit)

Provides instructions for adjusting the radar's scanner unit components.

Chapter 4. MAINTENACE

4.4 Self-test

Guides on performing and interpreting the radar's self-test diagnostics.

4.5 Notice on Replacing Major Parts

Provides essential precautions before replacing major components like the magnetron.

MAGNETRON

Specific instructions and safety notes for replacing the magnetron.

4.7 How to update system program

Step-by-step instructions for updating the radar system's software.

Chapter 5. TROUBLESHOOTING

5.2 Error Message

Explains system error messages and their potential causes.

Visual Alarms

Describes visual indicators on the display that signal abnormal system conditions.

Symptom: Nothing appears on the display

Offers a troubleshooting guide for when the display shows no image.

Symptom: Abnormal display

Guides on diagnosing and resolving issues with an abnormal radar display.

Symptom: Antenna does not rotate

Steps to diagnose why the radar antenna is not rotating.

Symptom: No echoes nor white noise

Troubleshooting guide for a display showing no echoes or only white noise.

Symptom: Poor sensitivity

Steps to diagnose and resolve issues with low radar sensitivity.

Symptom: Target cannot be acquired

Guides on troubleshooting why radar targets cannot be acquired.

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