Kenwood NX-5300 K2 User Manual

SERVICE MANUAL
COPYRIGHT © 2015 JVC KENWOOD Corporation
No.RA015<Rev.002>
2015/9
B5B-7154-10
UHF DIGITAL TRANSCEIVER
RA015<Rev.002>20159SERVICE MANUALB5B-7154-10
NX-5300
COPYRIGHT © 2015 JVC KENWOOD Corporation
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-105
NX-5300 F3,F6,K3,K6,ENX-5300 F2,F5,K2,K5,E2
This service manual has been revised due to the addition of NX-5300 type E, E2.
REVISED
This product complies with the RoHS directive for the European market.
This product uses Lead Free solder.

Kenwood NX-5300 K2 Specifications

General

Power Output	5W
Operating Voltage	7.5V DC ±20%
Operating Temperature Range	-30°C to +60°C
RF Output Power	5W / 1W
IP Rating	IP67
Channel Spacing	12.5 kHz, 25 kHz
Digital Protocol	NXDN, P25
Modulation	16K0F3E, 11K0F3E
Battery Life	Up to 14 hours (with KNB-57L battery)

Summary

SECTION 2 SPECIFIC SERVICE INSTRUCTIONS

2.1 SYSTEM SET-UP

Describes the system setup and initial configuration process for the transceiver.

2.2 REALIGNMENT

2.2.2 How to Enter Each Mode

Provides instructions on accessing different operational modes of the transceiver.

2.2.3 Panel Test Mode

Explains the functions and operations within the panel test mode.

2.2.4 Panel Tuning Mode

Describes the procedures for entering and utilizing the panel tuning mode.

2.2.5 PC Mode

Details the procedures for communicating with the transceiver via PC.

2.2.6 Firmware Programming Mode

Firmware Programming Procedures

Covers the steps for programming firmware, including connection and data writing.

2.2.7 Clone Mode

2.2.8 Front Panel Programming Mode

Entering and Data Writing

Explains how to enter front panel programming mode and write data.

2.4 CIRCUIT DESCRIPTION

Receiver System Circuits

Details the RF and IF circuits within the receiver system.

2.4.4 Transmitter System

Transmitter System Circuits

Describes the audio band, baseband, drive, final, and APC circuits.

2.4.5 PLL Frequency Synthesizer

PLL Frequency Synthesizer Components

Details the TCXO, VCO, and PLL IC components.

SECTION 3 DISASSEMBLY

Disassembly Precautions

Disassembly Procedures

Front Case and Holderassy Removal

Instructions for removing the front case and holder assembly.

LCD Shielding and Main Unit Removal

Steps for removing the LCD shielding case and main unit.

SECTION 4 ADJUSTMENT

4.1 TYPE Controls and Preparations

4.2 Panel Test Mode

Explains test mode operations, key functions, and frequency/signaling settings.

4.3 Panel Tuning Mode

4.4 BER (Bit Error Rate) Measurement

4.9 Transmitter Section

4.10 Receiver Section

Receiver Section

Sensitivity 2

4.11 E, E2 TYPE Controls

Preparations for Checking/Tuning

4.12 Panel Test Mode

Explains test mode operations, key functions, and frequency/signaling settings.

4.13 Panel Tuning Mode

Tuning Procedures and Operations

4.14 BER (Bit Error Rate) Measurement

4.19 Transmitter Section

Necessary Deviation Adjustment Items

4.20 Receiver Section

Sensitivity 1

SECTION 5 TROUBLESHOOTING

Fault Diagnosis of BGA IC

Flowchart for diagnosing transceiver power issues related to BGA ICs.

5.2 Failure diagnosis of the GPS section

5.3 Failure diagnosis of the Bluetooth section

5.4 Replacing Main Unit