Kenwood NX-3320 K3 User Manual

SERVICE MANUAL
COPYRIGHT © 2017 JVC KENWOOD Corporation
No.RA053<Rev.001>
2017/6
B5B-7267-00
VHF DIGITAL TRANSCEIVER, UHF DIGITAL TRANSCEIVER
RA053<Rev.001>20176SERVICE MANUALB5B-7267-00
NX-3220, NX-3320
COPYRIGHT © 2017 JVC KENWOOD Corporation
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-149
NX-3220, NX-3320 K,E3 NX-3220, NX-3320 K2,E2 NX-3220, NX-3320 K3,E
This product complies with the RoHS directive for the European market.
This product uses Lead Free solder.

Kenwood NX-3320 K3 Specifications

General

Channels	260
Zones	128
Operating Voltage	7.5V DC ±20%
Digital Protocol	NXDN
IP Rating	IP54/55
Operating Temperature	-30°C to +60°C
Power Output	5W
Channel Spacing	12.5 kHz / 25 kHz
Display	LCD
Modulation	16K0F3E
Frequency Range	136-174 MHz

Summary

SECTION 1 PRECAUTION

SECTION 2 SPECIFIC SERVICE INSTRUCTIONS

2.1 SYSTEM SET-UP

Outlines initial system configuration steps.

2.2 REALIGNMENT

Procedures for realigning transceiver functions.

2.2.1 Modes

Defines various operating modes of the transceiver.

2.2.5 PC Mode

2.2.6 Firmware Programming Mode

SECTION 3 DISASSEMBLY

3.1 Precautions for Waterproof

Critical warnings to maintain transceiver waterproof integrity.

3.2 Precautions for Disassembly

Essential steps and warnings before starting disassembly.

3.2 Precautions for Disassembly (continued)

3.2.3 Removing the mechanical stopper

Procedure for removing the mechanical stopper.

3.2.4 Removing the front case

Steps to detach the front casing from the chassis.

3.2 Precautions for Disassembly (continued)

3.2.7 Removing the TX-RX unit

Procedure for removing the TX-RX unit from the chassis.

3.2 Precautions for Disassembly (continued)

3.2.11 Removing the LCD

Process for detaching the LCD module.

3.3 Precautions for Reassembly

SECTION 4 ADJUSTMENT

4.1 NX-3220(K, K2, K3) TYPE Controls

Overview of controls for specific NX-3220 models.

4.2 Panel Test Mode

Accessing and operating the transceiver's panel test mode.

4.2.2 Button operation

Details the button functions within panel test mode.

SECTION 5 TROUBLESHOOTING

5.1 Fault Diagnosis of the BGA (Ball Grid Array) IC

Flowchart for diagnosing BGA IC failures.

5.2 Failure diagnosis of the GPS section

5.3 Failure diagnosis of the Bluetooth section

5.6 Operating Method of Enforced Firmware Overwriting Mode

5.7 Replacing TX-RX Unit