JRC NWZ-4740 User Manual (English)

Other manuals for JRC NWZ-4740

Questions and Answers:

R
Rachel JonesAug 4, 2025
What to do if my JRC NWZ-4740 power does not turn on?
- S
  Sharon WilliamsAug 4, 2025
  If your JRC GPS unit isn't powering on, there could be several reasons. First, check the cabling from the junction box to ensure power is being supplied. Also, verify the power supply unit cabling if you're using optional power supply equipment. If the cabling is fine, inspect the fuse connected to the power cable and the fuse in the optional power supply equipment, replacing them if blown. If none of these steps work, the display unit switch might be broken, in which case you should consult with JRC or an affiliate.
L
Lauren HubbardAug 8, 2025
Why is my JRC NWZ-4740 GPS not receiving signal from the sensor?
- T
  Timothy BraunAug 8, 2025
  If your JRC GPS isn't receiving a signal from the sensor, the issue might be a cut sensor connection cable, so check the cable. If the cable is not the problem, the sensor itself may be broken, and you should consult with JRC or an affiliate.
M
Matthew RodriguezAug 12, 2025
What to do if my JRC NWZ-4740 GPS has no reception from external devices?
- A
  Allison CordovaAug 12, 2025
  If your JRC GPS is not receiving data from external devices, the polarity of the serial cable might be incorrect, so check it. Also, the interface settings might not match; ensure they are correctly configured. Finally, an unsupported sentence may have been entered; verify the entered commands and version.
W
Walter McdanielAug 17, 2025
How to troubleshoot no transmission to external devices on my JRC NWZ-4740?
- J
  Jeremy ThomasAug 17, 2025
  If your JRC GPS is not transmitting to external devices, the output settings may not be configured correctly; you should refer to section 4.20. The configured channel might also be incorrect; refer to section 4.20. If these settings are correct, the DISP-DPU or connector board might be broken, and you should consult with JRC or an affiliate.
N
Nicholas FrazierAug 21, 2025
Why is there no alarm sound on my JRC NWZ-4740?
- D
  Dillon LopezAug 21, 2025
  If the alarm sound is not working on your JRC GPS, the buzzer itself may be broken, and you should consult with JRC or an affiliate. Alternatively, the alarm sound may be turned off, so refer to section 4.11.2 for setting the alarm sound.
N
Nathaniel YoungAug 26, 2025
What to do if the LCD display on my JRC GPS is not working?
- S
  Steven DanielsAug 26, 2025
  If the LCD display on your JRC GPS is not displaying anything, the LCD display may be broken, and you should consult with JRC or an affiliate.
R
rroblesAug 29, 2025
How to enable the click sound on my JRC GPS?
- D
  Darlene SmithAug 29, 2025
  If the click sound is not working on your JRC GPS, the key press sound may be turned off. Refer to section 4.14.3 for setting the Click sound.

JRC NWZ-4740 Specifications

General

Brand	JRC
Model	NWZ-4740
Category	GPS
Language	English

Summary

Foreword

Before Commencing the Operation

Symbols

Explains safety and operational symbols used in the manual.

Examples of the Symbols

Illustrates and describes the meaning of various cautionary symbols.

Precautions Upon the Operation

WARNING

Details warnings for safe operation to prevent death or serious injury.

CAUTION

Details cautions for safe operation to prevent injury or property damage.

Appearance of the Equipment

NWZ-4740 Display Unit

Shows the physical appearance and dimensions of the display unit.

JLR-4341 DGPS Sensor Unit

Shows the physical appearance and dimensions of the DGPS sensor.

JLR-4340 GPS Sensor Unit

Shows the physical appearance and dimensions of the GPS sensor.

Terminology

Terms and Definitions

Provides a list of technical terms and their meanings used in the manual.

Section 1 Equipment Overview

1.1 Functions

Describes the primary functions of the GPS navigator.

1.2 Features

Lists the key features and capabilities of the equipment.

1.3 Configuration

Details the standard configuration of the equipment, including components.

1.4 Construction

Provides physical dimensions and construction details of the equipment.

1.5 System Diagram

Illustrates the system architecture and interconnections of the equipment.

Section 2 Names and Functions of Each Unit

2.1 NWZ-4740 DISPLAY UNIT

Identifies and explains the components of the display unit's control panel.

2.2 JLR-4341 DGPS Sensor

Identifies the components of the DGPS sensor unit.

2.3 JLR-4340 GPS Sensor

Identifies the components of the GPS sensor unit.

Section 3 Display Screen

3.1 Display screen

Introduces the different screen types available for display.

3.1.1 Navigation Information Screen

Details the navigation information screen and its various sub-screens.

3.1.2 Plotting Screen 1

Explains the first type of plotting screen, showing ship's position.

Section 4 Operation

4.1 Menu List

Provides a comprehensive overview of the main menu structure and options.

4.2 Basic Operation

Covers fundamental operations like turning the unit on/off and adjusting settings.

4.3 Plot Screen Operation

Explains how to interact with the plot screen, including cursor and zoom functions.

4.4 Registering Waypoints

Details the process of registering waypoints in the list.

4.5 Route Planning

Covers the creation, editing, and management of navigation routes.

4.6 Performing Navigation

Explains how to start, perform, and stop navigation using routes or waypoints.

4.7 Events/Marks

Describes how to register, display, edit, and delete events and marks.

4.8 List Screen Operation

Explains how to navigate and operate within various list screens.

4.9 Entering Comments

Details how to add and edit text comments for waypoints, events, and routes.

4.10 MOB

Explains the Man Overboard function for saving a location.

4.11 Alarm Settings

Covers the configuration and setting of various audible and visual alarms.

4.12 Navigation Assistance

Explains how to measure trip distance, time, and calculate between points.

4.13 Beacon Information

Describes how to display beacon information received by the unit.

4.14 Display Settings

Covers adjusting contrast, brightness, click sound, and display modes.

4.15 System Settings

Details various system settings like time, date, units, and magnetic correction.

4.16 GPS/Beacon/SBAS Settings

Covers configuration of GPS modes, fixing, smoothing, and RAIM.

4.17 Version Display

Allows viewing the version numbers for the GPS sensor and display unit.

4.18 Language Settings

Enables selection between English and Japanese display languages.

4.19 Print

Covers printing ship information and setting output intervals.

4.20 Equipment Configuration

Details how to enter configuration mode for settings and installation.

Section 5 Maintenance and Inspection

5.1 General Maintenance and Inspection

Outlines regular maintenance procedures and inspection methods.

5.2 Alarms

Lists and explains various alarm messages and their causes.

5.3 Troubleshooting

Provides guidance on identifying and resolving common problems.

Section 6 Installation

6.1 GPS Sensor Installation

Covers the selection of installation position and the sensor installation procedure.

6.2 Display Unit Installation

Details the process for selecting installation position and mounting the display unit.

6.3 Cable Connection

Explains the various cable connections for the unit's rear connectors.

6.4 Optional Peripheral Connection

Describes connections for optional peripherals like sub-displays and junction boxes.

6.5 LAN and Serial Connection

Details LAN and serial connection configurations for networking and peripherals.

Section 7 After-Sales Service

7.1 Warranty

Outlines the standard warranty period for the equipment.

7.2 Repair parts stocking Period

Specifies the duration for which repair parts are stocked.

7.3 When Requesting Service

Provides guidance on how to request service and information needed.

Section 8 Disposal

8.1 Disposal of the Equipment

Instructs on observing local regulations for equipment disposal.

8.2 Disposal of Used Batteries

Provides instructions for the proper disposal of used batteries.

Section 9 Specification

9.1 NWZ-4740 DISPLAY UNIT

Lists the basic specifications and environmental requirements for the display unit.

9.1.3 External Interface

Details the external interfaces, including serial transmission and contact signals.

9.2 JLR-4341 DGPS Sensor

Lists the basic specifications and environmental requirements for the DGPS sensor.

9.3 JLR-4340 GPS Sensor

Lists the basic specifications and environmental requirements for the GPS sensor.

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