Kenwood NX-5900 User Manual

SERVICE MANUAL
COPYRIGHT © 2015 JVC KENWOOD Corporation
No.RA032<Rev.001>
2015/9
B5B-7211-00
700/800MHz DIGITAL TRANSCEIVER
RA032<Rev.001>20159SERVICE MANUALB5B-7211-00
NX-5900, NX-5900(B)
COPYRIGHT © 2015 JVC KENWOOD Corporation
TABLE OF CONTENTS
1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76
NX-5900 is a model that operation panel is attached.
NX-5900(B) is a model that operation panel is not attached.
The illustration is NX-5900.
This product complies with the RoHS directive for the European market.
This product uses Lead Free solder.

Kenwood NX-5900 Specifications

General

Brand	Kenwood
Model	NX-5900
Category	Transceiver
Language	English

Summary

PRECAUTION

SPECIFICATION

SPECIFIC SERVICE INSTRUCTIONS

SYSTEM SET-UP

Guides the user through the initial system setup and configuration.

REALIGNMENT

PC Mode

Covers communication and programming via PC.

Firmware Programming Mode

Details procedures for updating the transceiver's flash memory firmware.

INSTALLATION

Ignition Sense Cable (KCT-46: Option)

Details the installation and connection of the optional ignition sense cable.

Secure Cryptographic Module (KWD-AE30/KWD-AE31:Option)

Details installation of the secure cryptographic module and its associated settings.

CIRCUIT DESCRIPTION

Receiver System

Describes the RF, IF, and audio amplifier circuits within the receiver.

Transmitter System

Explains the audio, baseband, drive, final amplifier, and APC circuits in the transmitter.

Control Circuit

Details the MPU, memory, LCD, and key detection circuits responsible for system control.

COMPONENTS DESCRIPTION

Main unit (XC1-1021-80)

Details the ICs and transistors found on the main unit's PCB.

D-Sub 25-pin connector specification

DISASSEMBLY

Precautions for Disassembly

Important safety warnings and precautions before starting disassembly.

Precautions for Reassembly

Main PCB (Main unit A/2) reassembly

Guide for correctly reassembling the main PCB into the chassis.

ADJUSTMENT

Panel Test Mode

Details the features and key operations available in the panel test mode.

Panel Tuning Mode

Explains how to enter and use the panel tuning mode for adjusting transceiver parameters.

BER (Bit Error Rate) Measurement

Test Equipment Required for Alignment

Radio Check Section

High Power Check [700M band]

Details the procedure for checking the transceiver's high power output in the 700MHz band.

Low Power Check [700M band]

Procedure for checking low power output in the 700MHz band.

Common Section

Receive Assist

Procedure for adjusting the receive assist level, including automatic and manual methods.

Transmitter Section

Maximum Deviation [Analog Wide 5k]

Procedure for adjusting maximum deviation for analog wide 5k mode.

TROUBLESHOOTING

Fault Diagnosis of BGA ICs

Guide for diagnosing faults related to Ball Grid Array Integrated Circuits.

GPS Section Failure Diagnosis

Flowchart for diagnosing and resolving GPS function failures.

PARTS LIST

Exploded View of General Assembly and Parts List

Provides an exploded view of the transceiver, identifying major assemblies and parts.

Electrical Parts List - Main Unit

Lists integrated circuits, transistors, and diodes for the main unit.