Kenwood NX-720, NX-720 C, NX-720G Service Manual

VHF DIGITAL TRANSCEIVER

NX-720(G)/720

SERVICE MANUAL

REVISED

© 2012-12 PRINTED IN JA PAN
B53-7039-10 (Y) PDF

Modular jack
(E58-0535-05)

Key top
(K29-9479-01)

CONTENTS

GENERAL ....................................................2

SYSTEM SET-UP .........................................4

REALIGNMENT ...........................................4

INSTALLATION ............................................7

DISASSEMBLY FOR REPAIR .....................9

CIRCUIT DESCRIPTION ...........................11

COMPONENTS DESCRIPTION ................17

PARTS LIST ...............................................19

EXPLODED VIEW ......................................29

Panel assy
(A62-1200-03)

TERMINAL FUNCTION .............................56

PC BOARD

DISPLAY UNIT (X54-3830-10) ...............60

TX-RX UNIT (X57-8230-1X)....................62

INTERCONNECTION DIAGRAM ...............66

SCHEMATIC DIAGRAM ............................67

BLOCK DIAGRAM .....................................78

LEVEL DIAGRAM ......................................81

OPTIONAL ACCESSORIES

Badge
(B43-1675-04)

TROUBLE SHOOTING ..............................30

ADJUSTMENT ...........................................34

This product complies with the RoHS directive for the European market.

KRA-40 ...................................................82

SPECIFICATIONS ......................................83

This product uses Lead Free solder.

NX-720(G)/720

Document Copyrights

Copyright 2012 by JVC KENWOOD Cor poration. All

rights reserved.

No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or other­wise, for any purpose without the prior written permission of
JVC KENWOOD Corporation.

Disclaimer

While every precaution has been taken in the preparation
of this manual, JVC KENWOOD Corporation assumes no
responsibility for errors or omissions. Neither is any liability
assumed for damages resulting from the use of the informa­tion contained herein. JVC KENWOOD Corporation reserves
the right to make changes to any products herein at any time
for improvement purposes.

GENERAL

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced techni­cians familiar with similar types of commercial grade com­ mu ni ca tions equipment. It contains all required ser vice
in for ma tion for the equipment and is current as of the pub­lication date. Changes which may occur after publication
are covered by either Service Bulletins or Manual Revisions.
These are is sued as required.

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment informa­tion, the full part identifi cation number should be included.
This applies to all parts : components, kits, or chassis. If the
part number is not known, include the chassis or kit number
of which it is a part, and a suffi cient description of the re­ quired component for proper identifi cation.

PERSONAL SAFETY

The following precautions are recommended for personal
safety:

• DO NOT transmit if someone is within two feet (0.6 me-

ter) of the antenna.

• DO NOT transmit until all RF connectors are secure and

any open connectors are properly terminated.

• SHUT OFF this equipment when near electrical blasting

caps or while in an explosive atmosphere.

• All equipment should be properly grounded before pow-

erup for safe operation.

• This equipment should be serviced by only qualifi ed tech-

nicians.

Firmware Copyrights

The title to and ownership of copyrights for firmware
embedded in KENWOOD product memories are reserved
for JVC KENWOOD Corporation. Any modifying, reverse
engineering, copy, reproducing or disclosing on an Inter net
website of the firmware is strictly prohibited without prior
written consent of JVC KENWOOD Corporation. Further­more, any reselling, assigning or transferring of the fi rmware
is also strictly prohibited without embedding the fi rmware in
KENWOOD product memories.

Transceivers containing AMBE+2™ Vocoder:

The AMBE+2™ voice coding technology is embedded in
the fi rmware under the license of Digital Voice Systems, Inc.

PRE-INSTALLATION CONSIDERATIONS

1. UNPACKING

Unpack the radio from its shipping container and check
for accessory items. If any item is missing, please contact
KENWOOD immediately.

2. PRE-INSTALLATION CHECKOUT
2-1. Introduction

Each radio is adjusted and tested before shipment. How­ever, it is recommended that receiver and transmitter opera­tion be checked for proper operation before installation.

2-2. T esting

The radio should be tested complete with all cabling and
accessories as they will be connected in the fi nal installation.
Transmitter frequency, deviation, and power output should be
checked, as should receiver sensitivity, squelch operation,
and audio output. Signalling equipment operation should be
verifi ed.

3. PLANNING THE INSTALLATION
3-1. General

Inspect the vehicle and determine how and where the ra­dio antenna and accessories will be mounted.

Plan cable runs for protection against pinching or crush­ing wiring, and radio installation to prevent overheating.

3-2. Antenna

The favored location for an antenna is in the center of a
large, flat conductive area, usually at the roof center. The
trunk lid is preferred, bond the trunk lid and vehicle chassis
using ground straps to ensure the lid is at chassis ground.

2

GENERAL

NX-720(G)/720

3-3. Radio

The universal mount bracket allows the radio to be
mounted in a variety of ways. Be sure the mounting surface
is adequate to support the radio’s weight. Allow sufficient
space around the radio for air cooling. Position the radio
close enough to the vehicle operator to permit easy access
to the controls when driving.

3-4. DC Power and wiring

1. This radio may be installed in negative ground electrical

systems only. Reverse polarity will cause the cable fuse

to blow. Check the vehicle ground polarity before installa-

tion to prevent wasted time and effort.

2. Connect the positive power lead directly to the vehicle

battery positive terminal. Connecting the Positive lead to

any other positive voltage source in the vehicle is not rec-

ommended.

3. Connect the ground lead directly to the battery negative

terminal.

4. The cable provided with the radio is suffi cient to handle

the maximum radio current demand. If the cable must be

extended, be sure the additional wire is suffi cient for the

current to be carried and length of the added lead.

4. INSTALLATION PLANNING – CONTROL STATIONS
4-1. Antenna system

The antenna system selection depends on many fac­tors and is beyond the scope of this manual. Your KEN­WOOD dealer can help you select an antenna system that
will best serve your particular needs.

4-2. Radio location

Select a convenient location for your control station radio
which is as close as practical to the antenna cable entry
point. Secondly, use your system’s power supply (which sup­plies the voltage and current required for your system). Make
sure suffi cient air can fl ow around the radio and power sup­ply to allow adequate cooling.

SERVICE

This radio is designed for easy servicing. Refer to the
schematic diagrams, printed circuit board views, and align­ment procedures contained in this manual.

NOTE

If you do not intend to use the speaker 3.5-mm jack, the
D-sub 15-pin connector and SMA connector, fi t the supplied
speaker-jack cap, ACC cap and SMA cap to stop dust and
sand from getting in.

Speaker
jack cap

ACC.

Antenna
connector

ACC. cap SMA

GPS model only

Power input
connector

3

NX-720(G)/720

Merchandise received

Choose the type of transceiver

SYSTEM SET-UP

Frequency range (MHz) RF power

136~174 25W NX-720(G)/720

Type

1. Modes

User mode

Panel test mode

PC mode

Firmware

programming mode

Clone mode

Firmware version information

Transceiver programming

(Option: NX-720(G) only)

KRA-40 GPS active antenna

(Option)

KES-3

External speaker

Panel tuning mode

Data programming mode
PC test mode

PC tuning mode

See page 4.
A personal computer, programming interface (KPG-46A/46U),
and FPU (programming software) are required for programming.

KCT-60

Connection cable

KCT-18

Ignition sense cable

Delivery

See page 7. See page 8.

(Option)

See page 7.

KCT-36

Extension cable

REALIGNMENT

2. How to Enter Each Mode

User mode Power ON
Panel test mode [
Panel tuning mode Panel test mode+[
PC mode Received commands from PC
Firmware programming mode [
Clone mode [
Firmware version information [

(Option)

*Only when required.

(Option)(Option)

KES-5

External speaker

Mode Operation

]+Power ON

]

]+Power ON

]+Power ON (One second)

]+Power ON

Mode Function

User mode For normal use.
Panel test mode
Panel tuning mode Used by the dealer to tune the transceiver.
PC mode
Data programming

mode
PC test mode
PC tuning mode Used to tune the transceiver using the PC.

Firmware
programming mode

Clone mode
Firmware version

information

Use by the dealer to check the fundamental
characteristics.

Used for communication between the trans­ceiver and PC.

Used to read and write frequency data and
other features to and from the transceiver.

Used to check the transceiver using the PC.
This feature is included in the FPU.

Used when changing the main program of
the fl ash memory.

Used to transfer programming data from
one transceiver to another.

Used to confi rm the internal fi rmware version.

4

3. Panel Test Mode

Setting method refer to ADJUSTMENT.

4. Panel Tuning Mode

Setting method refer to ADJUSTMENT.

5. PC Mode

5-1. Preface

The transceiver is programmed using a personal com­puter, a programming interface (KPG-46A/46U) and FPU
(programming software).

The programming software can be used with a PC. Fig­ure 1 shows the setup of a PC for programming.

REALIGNMENT

NX-720(G)/720

5-2. Connection procedure

1. Connect the transceiver to the computer using the inter­face cable.

Note:

• You must install the KPG-46U driver in the computer to
use the USB programming interface cable (KPG-46U).

2. When the Power is switched on, user mode can be en­tered immediately. When the PC sends a command, the
transceiver enters PC mode, and “PROGRAM” is dis­played on the LCD.

When data is transmitting from the transceiver, the red

LED blinks.

When data is receiving by the transceiver, the green LED

blinks.

Note:

The data stored in the computer must match the “Model

Name” when it is written into the fl ash memory.

5-3. KPG-46A description
(PC programming interface cable: Option)

The KPG-46A is required to interface the transceiver to

the computer. It has a circuit in its D-sub connector (KPG-46A:
9-pin) case that converts the RS-232C logic level to the TTL
level.

The KPG-46A connects the 8-pin microphone connector

of the transceiver to the RS-232C serial port of the comput­er.

5-4. KPG-46U description
(USB programming interface cable: Option)

The KPG-46U is a cable which connects to a USB port

on a computer.

When using the KPG-46U, install the supplied CD-ROM

(with driver software) in the computer. The KPG-46U driver
runs under Windows XP, Vista or 7.

The latest version of the USB driver is available for down-

load from the following URL:

http://www.kenwood.com/usb-com/
(This URL may change without notice.)

5-5. Programming Software: KPG-141D
(ver.3.00 or later) description

The FPU is the programming software for the transceiver

supplied on a CD-ROM. This software runs under Windows
XP, Vista or 7 on a PC.

The data can be input to or read from the transceiver and

edited on the screen. The programmed or edited data can be
printed out. It is also possible to tune the transceiver.

PC

KPG-46A or KPG-46U
Tuning cable

(E30-3383-05)

FPU

PC

D-SUB
(9-pin)

KPG-46A

Transceiver

PC

USB

KPG-46U

Transceiver

Fig. 1

6. Firmware Programming Mode

6-1. Preface

Flash memory is mounted on the transceiver. This al­lows the transceiver to be upgraded when new features are
released in the future. (For details on how to obtain the fi rm­ware, contact Customer Service.)

6-2. Connection procedure

Connect the transceiver to the personal computer using
the interface cable (KPG-46A/46U). (Connection is the same
as in the PC Mode.)

6-3. Programming

1. Start up the firmware programming software (Fpro.

exe(ver. 6.1 or later)). The Fpro.exe exists in the KPG-

141D installed folder.

2. Set the communications speed (normally, 115200 bps)

and communications port in the confi guration item.

3. Set the fi rmware to be updated by File name item.

4. Press and hold the [

power ON. Then, the orange LED on the transceiver

lights and “FIRM PRG” is displayed.

5. Check the connection between the transceiver and the

personal computer, and make sure that the transceiver is

in the Program mode.

6. Press “write” button in the window. When the transceiver

starts to receive data, the "LOADING" display lights.

7. If writing ends successfully, the checksum is calculated

and a result is displayed.

8. If you want to continue programming other transceivers,

repeat steps 4 to 7.

] key while turning the transceiver

5

NX-720(G)/720

(

)

REALIGNMENT

6-4. Function

If you press the [] key while “FIRM PRG” is displayed,
the checksum is calculated, and a result is displayed.If you
press the [
“FIRM PRG” is redisplayed.

Note:

• This mode cannot be entered if the Firmware Program-

ming mode is set to Disable in the Programming soft­ware.

• Normally, write in the high-speed mode.

]

key again while the checksum is displayed,

7. Clone Mode

Programming data can be transferred from one trans­ceiver to another by connecting them via their modular
microphone jacks. The operation is as follows (the transmit
transceiver is the source and the receive transceiver is a tar­get). Clone mode should be enabled.

The following data cannot be cloned.

• Tuning data

• Embedded massage with password

• Model name data

• ESN (Electronic Serial Number) data

• My ID for 5-tone

Note :

The following data can be cloned.

• Fleet (own)/ID (own) for FleetSync

• Unit ID (own) for NXDN

• ID (own) for MDC-1200

3. If the [
displayed, numbers (0 to 9) are displayed fl ashing. When
you press the [
determined. If you press the [
password in this procedure, “CLONE MODE” is displayed
if the entered password is correct. If the password is in­correct, “CLONE LOCK” is redisplayed.

] and [ ] keys is pressed while “CLONE LOCK” is

] key, the currently selected number is

] key after entering the

Cloning cable

E30-3382-05

Fig. 2

7-2. Flow chart (Source transceiver)

Press [ ] key + Power ON for 1 second

password*

* Read
Authorization
password

Is

set?

No

Yes

Shows CLONE LOCK

Enter password

1. Turn the source transceiver power ON with the [
held down (1 second), “CLONE MODE” is displayed on
the LCD.

2. Power on the target transceiver.

3. Connect the cloning cable (No. E30-3382-05) to the mod­ular microphone jacks on the source and target.

4. Press the [

The data of the source is sent to the target. While the

source is sending data, red LED blinked. While the target
is receiving the data, “PROGRAM” is displayed and green
LED blinked. When cloning of data is completed, the
source displays “END”, and the source red LED turned
off, and the target automatically operates in the User
mode. The target can then be operated by the same pro­gram as the source.

5. The other target can be continuously cloned. Carry out
the operation in step 2 to 4.

] key on the source transceiver.

] key

7-1. How to enter the data password

If the read authorization password is set in the optional

feature menu, you must enter the password (Source trans­ceiver) to activate a clone mode.

You can use 0~9 to confi gure the password. The maxi-

mum length of the password is 6 digits.

1. [

]+Power ON.

2. “CLONE LOCK” is displayed on the LCD.

Is entered
password

correct?

Yes

Clone mode

[ ]

Start the clone function

8. Firmware Version Information

Press and hold the [ ] key while turning the transceiver
power ON and then keep pressing and holding the [
the fi rmware version information appears on the LCD.

No

] key,

6

INSTALLATION

NX-720(G)/720

1. Connection Cable (KCT-60: Option)

The KCT-60 connection cable kit is used to connect the
transceiver to a Horn alert cable, KCT-18 (Ignition sense
cable), KES-5 (External speaker), or through the KCT-36 ex­tension cable.

1-1. Installing the KCT-60 (Connection cable) in the

transceiver

1. Remove the ACC. cap on the rear of the transceiver.

2. Connect the D-sub connector of the KCT-60 to the D-sub

15-pin terminal of the transceiver.

3. Connect the 15-pin connector of the KCT-60 to a Horn

alert cable, KCT-18, KES-5, or through a KCT-36 exten-

sion cable.
Note: You must setup using the KPG-141D.

KCT-60

2-1. Installation Procedure

1. Remove the ACC. cap on the rear of the transceiver.

2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.

3. Insert the two crimp terminals of the Horn aler t cable to
pins 13 and 14 of the square plug.

4. Connect the square plug to the 15-pin connector of the
KCT-60.

5. Connect the remaining two Horn alert cables to your car
Horn alert signal control.

The internal FET switch can be controlled by turning

the HA function on/off and by using a signaling decode
output. The maximum current of HA is 2A. This switch is
the FET switch of P-channel type. Therefore, a DC power
supply is necessary to use the HR1. The voltage range is
from 5V to 16V.

Note: You must set up using the KPG-141D.

13. HR1

14. HR2

3. GND

Horn alert cable,

Horn alert cable,
KCT-18, KES-5 or through

KCT-18, KES-5 or through
KCT-36 extension cable

KCT-36 extension cable

1-2. T erminal function

D-sub 15-pin Pin No. Name Molex 15-pin Pin No.

1SB1
2 IGN 2
3 PA or EXT-SP 12
4DO4
5DI5
6 FNC1 9
7 FNC2 11
8 FNC3 7

9 FNC4 6
10 FNC5 8
11 FNC6 10
12 5C ­13 HR1 13
14 HR2 14
15 GND 3

13
14
15

Horn alert cable

2

5

8

11

3

6

9

12

13

14

Crimp terminal

KCT-60

Square plug

1

4

7

10

3. Ignition Sense Cable (KCT-18: Option)

The KCT-18 is an optional cable for enabling the ignition
function. The ignition function lets you turn the transceiver
power on and off with the car ignition key.

3-1. Installing the KCT-18 (Ignition sense cable) in

the transceiver

1

4

7

10

13

2

5

8

11

14

3

6

9

12

15

2. Horn Alert Function

The Horn alert function (max. 2A drive) is enabled by in-

stalling the KCT-60 in the transceiver.

KCT-18

Ignition
line of the car

2

KCT-60

Square plug

7

NX-720(G)/720

INSTALLATION

4. External Speaker (Option)

4-1. KES-5

External speaker KES-5 can be installed for KCT-60.

Connection procedure

■

1. Remove the ACC. cap on the rear of the transceiver.

2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.

3. Insert the two crimp ter minals of the KES-5 to pins 3 and
12 of the square plug.

4. Connect the square plug to the 15-pin connector of the
KCT-60.

Note:

You must set up using the KPG-141D.
Before the external speaker can be used, you must as-

sign one of the keys as “External Speaker”, using the
KPG-141D.

13

10

7

4

11

8

12

9

12

Black lead

1

5

2

6

3

3

KCT-60

Square plug

14
15

Black/
White lead

5. Changing Serial Port Level

5-1. Change FNC1 (TXD) and FNC2 (RXD) of D-SUB
15-pin connector from TTL level to RS-232C level

FNC1 (TXD /6pin ) and FNC2 (RXD /7pin ) of D-SUB 15-

pin connector are confi gured at the TTL level as the default
value. But you can change these serial port level to RS­232C level through the RS-232C level converter IC (IC516)
by confi guring the port.

Remove the R664, R635 and R662 chip jumpers and sol-

der the chip jumpers to R666, R633 and R665.

5-2. Change FNC1 (TXD), FNC2 (RXD), FNC3 (RTS)
and FNC4 (CTS) of D-SUB 15-pin connector from
TTL level to RS-232C level

FNC1 (TXD /6pin ), FNC2 (RXD /7pin ), FNC3 (RTS /8pin )

and FNC4 (CTS /9pin ) of D-SUB 15-pin connector are con­figured at the TTL level as the default value. But you can
change these serial port level to RS-232C level through the
RS-232C level converter IC (IC516) by confi guring the port.

Remove the R664, R635, R662, R659, R658 and R632
chip jumpers and solder the chip jumpers to R666, R633,
R665, R663, R660 and R630.

+

R635

R664

5

R633

R666 R665

6
IC703

R664

5
6

IC703

R635

R662

R662

R658

R659
R663

R658

R659

R632

15
16

R632

R660

R797R796

19
20

15

R630

16

R797

R796
R798

R799

TX-RX unit

19
20

Component side

In the case of 5-1.

■

[TTL level]

R664,R635 and R662: 0 chip jumper.

R666, R633 and R665: open.

[RS-232C level]

R666, R633 and R665: 0 chip jumper.

R664, R635 and R662: open.

In the case of 5-2.

■

[TTL level]

R664, R635, R662, R659, R658 and R632: 0 chip
jumper.
R666, R633, R665, R663, R660 and R630: open.
[RS-232C level]

R666, R633, R665, R663, R660 and R630: 0 chip
jumper.

R664, R635, R662, R659, R658 and R632: open.

6. Changing of Signal Type

6-1.Change signal output of D-SUB connector
from DEO to AFO

The output (4pin) of D-SUB 15-pin connector is confi g-

ured at the DEO as the default value.

Remove the R796 chip jumper and solder the clip jumper

to R798.

6-2.Change signal input of D-SUB connector from
DI to MI2

The input (5pin) of D-SUB 15-pin connector is confi gured

at the DI as the default value.

Remove the R797 chip jumper and solder the chip jump-

er to R799.

8

NX-720(G)/720

DISASSEMBLY FOR REPAIR

1. Disassembly Procedure

1. Remove the cabinet, top packing and shielding plate of
the transceiver.

Cabinet

3. Disconnect the fl at cable from connector of the panel as­sembly.

Flat cable

4. Hook the finger to hole and while pulling the speaker
holder to this side, expand the panel side of a to c, and
remove the speaker holder from the front panel.

b

a

c

2. To remove the panel assembly, fi rst turn the transceiver
upside down.

Then, insert a fl at-head screwdriver into the holes of the

chassis and tilt it in the direction as shown by the arrow.

Holes

Panel assembly

Speaker holder

5. When removing the TX-RX PCB, first remove the top
packing.

Then, remove the solder of the antenna hot pin and posi-

tive terminal of the DC cord.

Remove the 16 screws from the TX-RX PCB, power mod-

ule, and audio amp.

Positive terminal
of the DC cord

Audio amp

TX-RX PCB

Top packing

Antenna hot pin

Power module

9

NX-720(G)/720

DISASSEMBLY FOR REPAIR

Note:

When you supply power to the TX-RX PCB after remov-

ing the TX-RX PCB from the chassis, solder the positive
and ground terminals of the DC cord (Recommendation:
E30-3448-25) to the + and GND terminals of the TX-RX
PCB.

+

GND

TX-RX PCB
Component side

6. Pull it out behind the chassis by rotating the bush c of
the DC cord 90 degrees in the direction of the arrow after
the screw a in the negative terminal is removed, and the
positive terminal b is removed from the chassis.

2. When mounting the panel assembly, pass the fl at cable
through the hole of the chassis as shown below then con­nect the fl at cable to connector of the panel assembly.

Panel assembly

Hole of
the chassis

Chassis

Chassis

3. Fit the panel assembly into the two tabs of the chassis
top side fi rst.

Then, fit the panel assembly into the two tabs of the

chassis bottom side by turning the panel assembly.

Panel
assembly

DC cord

a

c

b

2. Precautions for Reassembly

1. The tab from a to c is applied the front panel fi rst. And,
to f tabs inside the front panel is pushed.

d

b

a

c

f

d

Speaker holder

e

3. Correspondence when replacing the LED (D22 and D23)

When replacing the LED (D22 and D23), it makes it to

length.

LED

D22

13mm

LED
D23

12mm

10

Display PCB

CIRCUIT DESCRIPTION

NX-720(G)/720

1. Overview

The NX-720 is a VHF Mobile transceiver designed to
operate in the frequency range of 136 to 174MHz. The unit
consists of a receiver, transmitter, phase-locked loop (PLL)
frequency synthesizer, baseband parts, power supply, and
control circuits.

2. Frequency Confi guration

The receiver is a double-conversion super-heterodyne
using a fi rst intermediate frequency (IF) of 49.95MHz and a
second IF of 450kHz. Incoming signals from the antenna are
mixed with the local signal from the PLL circuit to produce
the fi rst IF of 49.95MHz. This is then mixed with the 50.4MHz
second local oscillator output to produce the 450kHz second
IF. The transmit signal frequency is generated by the PLL
VCO, and modulated by the signal from the DSP. It is then
amplifi ed and fed to the antenna.

MCF

CF 450kHz

IF SYSTEM

X3

50.4MHz

PLL/VCO

AF
PA

MIC

AMP

MIC

Baseband Circuit

SP

ANT

TX/RX: 136~174MHz

ANTSWRF

AMP

POWER

AMP

TX

AMP

1st

MIX

49.95MHz

16.8MHz
TCXO

185.95~

223.95MHz

136~174MHz

3. Receiver System

3-1. RF circuit

An incoming RF signal from the antenna terminal is
passed through the antenna switch (D110, 111 and 107)
and then the bandpass fi lter (L215, 216). The bandpass fi lter
is adjusted by a variable capacitor. The input voltage to the
variable capacitor is regulated by the voltage output from the
D/A converter (IC712). The signal is amplifi ed by an RF am­plifi er (Q202), and passed through the bandpass fi lter (L207,
209, 210 and 220). The resulting signal is applied to the fi rst
mixer (Q201) where it is mixed with the fi rst local oscillator
signal output from the frequency synthesizer to produce the
fi rst IF (49.95MHz).

3-2. IF circuit

The fi rst IF signal is passed through a four-pole mono­lithic crystal fi lter (XF1) to reject the adjacent channel signal.
The fi ltered fi rst IF signal is amplifi ed by the fi rst IF amplifi er
(Q305) and then applied to the IF system IC (IC303). The
IF system IC provides a second mixer, AGC amplifi er , and
RSSI (Received Signal Strength Indicator).

The second mixer mixes the first IF signal with the

50.4MHz of the second local oscillator output and produces
the second IF signal of 450kHz.

The second IF signal is passed through the ceramic fi lter
(CF1) to reject the adjacent channel signal. The fi ltered sec­ond IF signal is amplifi ed by the AGC amplifi er.

The signal from the AGC amplifi er is input to an AD con­verter in ASIC (IC507) through the ceramic fi lter (CF2).

Fig.1 Frequency confi guration

ANT

D107,

L116,L117

LPF

D110,D111

ANT

SW

IC 507

ASIC

IC 502

DSP

L215,L216

BPF

Q202

RF AMP

IC 711

(1/2)

L207,L209
L210,L220

BPF

1st local

OSC (VCO/PLL)

IC 711

(2/2)

Fig.2 Receiver System

Q201

1st MIX

IC 712

VOL

XF1

MCF

X1

TCXO

16.8MHz

Q305

IF AMP

IC 714

Q303

x3

IC303

MIX,AGC

2nd OSC

SP

CF2
BPF

CF1

11

NX-720(G)/720

DRIVE

Q102

FINAL

IC102

ANT

SW

D107,110,111

ANT
LPF

CPL

㻭㻺㼀

From T/R SW

D17

APC

For

DET

Rev
DET

D104

D105

IC103

Gate

bias

80T

MP

DC SW

/H_L

Q105

CIRCUIT DESCRIPTION

3-3. Audio amplifi er circuit

Audio processing (high-pass filter, low-pass filter, de­emphasized and so on) in FM mode and decoding in NXDN
mode are processed by the DSP (IC502). Audio signals from
the ASIC (IC507), IC502 goes through the amplifi er (IC711).
The signal then goes through the D/A converter (IC712) and
an amplifi er (IC714).

3-4. Squelch Circuit

This circuit amplifi es the demodulated noise signal from
the ASIC (IC507) after fi ltering through a LPF and HPF cir­cuit. The amplifi ed signal is then converted to a DC signal
by the detection circuit. The converted signal is fed back to
IC507.

DET

IC507

ASQAPC

ASQDET

IC705(1/2)

Q702
AMP

D702

RECT

ASQ

IC705(2/2)

AMP

Fig. 3 Squelch Circuit

4. T ransmitter System

IC703(2/2)MIC

MIC

AMP

AGC

D703,704
Q703,704

Fig. 4 Transmitter System

IC502
DSP

ASIC
IC507

IC701(1/2)

LPF

IC2

PLL IC

VCO

To TX
stage

4-1. Audio Band Circuit

The signal from the microphone is amplifi ed by IC703 (1/2)
and limited by the AGC circuit composed of D703, D704,
Q703 and Q704. IC703 (2/2) works as an anti-aliasing LPF
fi lter.

4-2. Baseband Circuit

The audio signal output from the Audio band circuit is
converted to digital data with a sampling frequency of 48
kHz. This digital data is sent to the DSP (IC502), and voice
signals of 300Hz or lower and frequencies of 3kHz or higher
are cut off so that an audio range 300Hz to 3kHz is extract­ed. The audio signal is then pre-emphasized in FM mode
and synthesized with the signals, such as QT and DQT, as
required, and is then output from the ASIC (IC507). In Digi­tal mode, the audio signal is converted to the 4-Level FSK
baseband signal and is output from IC507. The DTMF and
MSK baseband signals are also generated by the DSP and
output from IC507.

LPF (IC701) works as smoothing fi lter. The output level
according to the transmit carrier is fi ne-adjusted according to
each modulation method.

4-3. Drive and Final amplifi er

The signal from the T/R switch (D17 is on) is amplifi ed
by the drive amplifi er (Q102 ) to 16~17dBm. The output of
the drive amplifi er is amplifi ed by the fi nal amplifi er module
(IC102) to 25W (5.0W when the power is low). The output
of the fi nal amplifi er module is then passed through the har­monic fi lter (LPF) and antenna switch (D110, D111 are on)
and directional coupler and is applied to the antenna termi­nal.

4-4. APC circuit

The Automatic transmission power control (APC) circuit
stabilizes the transmitter output power at a predetermined
level by detecting the power module output with the direc­tional COUPLER and diode detector (D104 and D105). The
diode detector (D104 and D105) applies the detected volt­age to the DC amplifi er IC103 (2/2).

The APC circuit is confi gured to protect over-current of
the power module due to fl uctuations of the load at the an­tenna end and to stabilize transmission output at voltage and
temperature variations.

12

Fig. 5 APC Circuit

CIRCUIT DESCRIPTION

NX-720(G)/720

5. PLL Frequency Synthesizer

5-1. TCXO (X1)

The TCXO (X1) generates a reference frequency of

16.8MHz for the PLL frequency synthesizer. This reference
frequency is applied to pin 9 of the PLL IC (IC2) and is con­nected to the IF circuit as a 2nd local signal through the Tri­pler.

The frequency adjustment is achieved by switching the
ratio of the dividing frequency. The resolution of the adjusting
frequency is approximately 4Hz.

5-2. VCO

There is an RX VCO and a TX VCO.

The TX VCO (Q7) generates a transmit carrier and the
RX VCO (Q6) generates the 1st local signal. For the VCO
oscillation frequency, the transmit carrier is 136 to 174 MHz
and the 1st local signal is 185.95 to 223.95MHz.

The VCO oscillation frequency is determined by one sys­tem of operation switching terminal "T/R" and two systems
of voltage control terminals "CV" and "ASSIST".

The operation switching terminal, "T/R", is controlled by
the control line (/T_R) output from the ASIC (IC507). When
the /T_R logic is low, the VCO outputs the transmit carrier
and when it is high, it outputs the 1st local receive signal.

The voltage control terminals, "CV" and "ASSIST", are
controlled by the PLL IC (IC2) and ASIC (IC507) and the
output frequency changes continuously according to the
applied voltage. For the modulation input terminal, "VCO_
MOD", the output frequency changes according to the ap­plied voltage. This is used to modulate the VCO output.
"VCO_MOD" works only when "/T_R" is low.

5-3. PLL IC (IC2)

The PLL IC compares the differences in phases of the
VCO oscillation frequency and the TCXO reference fre­quency, returns the difference to the VCO CV terminal and
realizes the "Phase Locked Loop" for the return control. This
allows the VCO oscillation frequency to accurately match
(lock) the desired frequency.

When the frequency is controlled by the PLL , the fre­quency convergence time increases as the frequency dif­ference increases when the set frequency is changed. To
supplement this, the ASIC (IC507) is used before control by
the PLL IC to bring the VCO oscillation frequency close to
the desired frequency. As a result, the VCO CV voltage does
not change and is always stable at approximately 2.5V.

The desired frequency is set for the PLL IC by the ASIC
(IC507) through the 3-line "SDO1", "P_SCK1", "/PCS_RF"
serial bus. Whether the PLL IC is locked or not is monitored
by the ASIC through the “PLD” signal line. If the VCO is not
the desired frequency (unlocked), the "PLD" logic is low.

The modulation signal of the Low-speed-Data is applied
to pin 23 of the PLL IC (IC2).

The modulation signal that is digital data of a sampling
frequency of 96 kHz is set for the PLL IC by the DSP (IC502)
through the “PLL_MOD” line.

5-4. Local Switch (D16, D17)

The connection destination of the signal output from the
buffer amplifi er (Q11) is changed with the diode switch (D17)
that is controlled by the transmission power supply, HSW,
and the diode switch (D16) that is controlled by the reception
power supply, 50R. If the HSW logic is high, it is connected
to a transmit-side drive (Q102). If the HSW logic is low, it is
connected to a receive-side mixer (Q202).

TCXO

X1 16.8MHz

SDO1
PCK_RF
/PCS RF

PLLMOD

IC2

PLL

CV

VCO MOD

ASSIST

Loop
Filter

IC3(1/2)

150C

D15

MOD

IC3(2/2)

RX: Q6
D4,7,9,10

TX: Q7
D5,8,11,12

VCO

Fig. 6 PLL circuit

Q10

BUFF

AMP

BPF

Doubler

Q5

Q11

BUFF

AMP

50CS

D16,17

T/ R

SW

50R

HSW

to TX stage

to 1st MIXer

13

NX-720(G)/720

CIRCUIT DESCRIPTION

6. Control Circuit

The control circuit consists of the ASIC (IC507) and its

peripheral circuits. IC507 mainly performs the following:

1) Switching between transmission and reception via the
PTT signal input.

2) Reading system, zone, frequency, and program data from
the memory circuit.

3) Sending frequency program data to the PLL.

4) Controlling the squelch on/off using the DC voltage from
the squelch circuit.

5) Controlling the audio mute circuit using the decode data
input.

6-1. ASIC

The ASIC (IC507) is a 32bit RISC processor, equipped

with a peripheral function and ADC/DAC.

This ASIC operates at 18.432MHz clock and 3.3V /1.5V

DC. It controls the fl ash memor y, SRAM, DSP, the receive
circuit, the transmitter circuit, the control circuit, and the dis­play circuit and transfers data to or from an external device.

6-2. Memory Circuit

The memory circuit consists of the ASIC (IC507), the

SRAM (IC503) and the flash memory (IC501). The flash
memory has a capacity of 32Mbit which contains the trans­ceiver control program for the ASIC and stores the data. It
also stores the data for the transceiver channels and operat­ing parameters that are written by the FPU. This program
can be easily written from external devices. The SRAM has
a capacity of 1Mbit which contains the work area and data
area.

Flash memory

■

Note: The fl ash memory stores the data that is written by

the FPU (KPG-141D), tuning data (Deviation, Squelch,
etc.) and fi rmware program (User mode, Test mode, Tun­ing mode, etc.).

SRAM (static memory)

■

Note: The SRAM has a temporary data area and work area.

6-3. Display Unit

The display unit is composed of the LCD driver IC (IC1),

the LCD & Key backlight, etc.

The LCD is controlled using the 4 serial lines

(LCDDI,LCDCE,LCDCL,LCDDO) from the ASIC (IC507).

6-4. Key Detection Circuit

The keys are detected using an LCD driver IC (IC1). If a

pressed key is detected by IC1, the information is passed to
IC507 through the serial line.

6-5. DSP

The DSP circuit consists of a DSP (IC502) and process­es the baseband signal. The DSP operates on an external
clock of 18.432MHz (the same as the IC507), the I/O section
operates at 3.3V and the core section operates at 1.5V. The
DSP carries out the following processes:

• 4 level FSK processing

• Analog FM pre-emphasis/de-emphasis

• Vocoder processing between the audio codec and modu-

lation/demodulation

• CAI processing, such as error correction encoding

• QT/DQT encoding/decoding

• DTMF encoding/decoding

• MSK encoding/decoding

• 2-tone/5-tone encoding/decoding

• Compressor/expander processing

• Voice scrambler processing

• Transmit/receive audio fi ltering processing

• Microphone amplifi er AGC processing

• Audio mute processing

• Modulation level processing

7. Power Supply Circuit

+B is connected to the Final amplifier and the DC/DC
converter IC (IC405). IC405 regulates the +B voltage to 5.0V
(50M). 50M operates whenever +B is supplied. IC401 (33M)
and IC408 (15M) are enabled while the 50M is operating.

33M and 15M provide the power to the ASIC (IC507),
DSP (IC502), and Flash memory. At this time the ASIC
starts working. The voltage detector IC (IC402) watches the
+B voltage. If the +B voltage is higher than 8.6V, IC402 (/
BINT) outputs High. If the /BINT signal is high, Q403 (SB
SW) is turned on by the SBC signal from the ASIC. (High :
SBC=ON, Low : SBC=OFF). When the SB is turned on, IC1
(80C), IC404 (50C), Q402 (80ANT), Q404 (80T), Q415, 416
(150C), Q417 (50R) and Q408 (50CS) start working. IC409,
Q409 and Q410 are controlled by the SBC signal. If the
SBC signal becomes High, IC409 (33C) operates, and Q409
(33A_2) and Q410 (50MC SW) turn on.

The ASIC sets the TXC signal to High during transmis­sion to the supply power (80T) for the transmission circuit.
The ASIC sets the signals (RXC) to High during reception to
the supply power (50R) for the reception circuit.

When the ASIC detects the PSW (Power switch) signal,
IGN (Ignition sense) signal or /BINT signal, it sets the SBC
signal to Low, and turns the transceiver power (SB) off.
When D401 and Q401 detect an over-voltage condition, they
turn Q403 (SB SW) off, but the ASIC continues to function.

14

CIRCUIT DESCRIPTION

NX-720(G)/720

㪂㪙

㪝㪋㪇㪈

㪨㪋㪇㪈

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㪆㪦㪭㪩㪙

㪪㪙㪚㪉

㪠㪚㪋㪇㪈

㪘㪭㪩

㪠㪚㪋㪇㪏

㪘㪭㪩

㪠㪚㪋㪇㪍

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㪧㪣㪣㩷㪠㪚
㪫㪚㪯㪦㩿㪈㪍㪅㪏㪤㪟㫑㪀

㪞㪧㪪

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㪆㪙㪠㪥㪫

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㪞㪧㪪㪚

㪪㪙㪚㪉

㪛㪛㪚㪣㪢

㪫㪯㪚

㪛㪪㪮

㪨㪋㪈㪇

㪪㪮

㪨㪋㪈㪌㪃㪋㪈㪍

㪛㪚㪆㪛㪚

㪨㪋㪇㪋

㪪㪮

㪨㪋㪇㪉

㪪㪮

㪠㪚㪋㪇㪋

㪘㪭㪩

㪪㪘㪭㪜

㪩㪯㪚

㪨㪋㪇㪏

㪪㪮

㪨㪋㪈㪎

㪪㪮

㪌㪇㪤㪚

㪪㪙

㪈㪌㪇㪚

㪏㪇㪫

㪏㪇㪘㪥㪫

㪌㪇㪚

㪌㪇㪚㪪

㪌㪇㪩

㪩㪪㪉㪊㪉㪚㩷㪚㫆㫅㫍㪼㫉㫋㪼㫉
㪛㪄㫊㫌㪹㩷㪈㪌

㪘㫌㪻㫀㫆㩷㪧㫆㫎㪼㫉㩷㪘㪤㪧
㪛㫀㫊㫇㫃㫐㩷㪬㫅㫀㫋
㪛㪄㫊㫌㪹㩷㪈㪌

㪭㪚㪦㩷㪫㫌㫅㪼㩷㩿㪘㫊㫊㫀㫊㫋㪀
㪝㫉㫆㫅㫋㩷㪜㫅㪻㩷㪫㫌㫅㫀㫅㪾

㪫㪯㩷㪛㫉㫀㫍㪼㪃㩷㪘㪧㪚

㪘㪥㪫㩷㪪㪮

㪠㪆㪦㩷㪜㫏㫇㪸㫅㪻㪼㫉
㪧㪣㪣㩷㪠㪚

㪛㫀㫊㫇㫃㫐㩷㪬㫅㫀㫋㩿㪣㪜㪛㪀

㪚㫆㫄㫄㫆㫅㩷㪘㪤㪧

㪝㪶㫀㫅㩷㪘㪤㪧

㪩㪝㩷㪘㪤㪧㩿㪭㪚㪦㩷㪙㫌㪽㪽㪀

㪫㪯㪆㪩㪯㩷㪭㪚㪦

㪣㪥㪘㪃㩷㪤㫀㫏㪼㫉㪃㩷

㪠㪝㩷㪘㪤㪧㪃㩷㪝㪤㩷㪠㪚

Fig. 7 Power supply circuit

15

NX-720(G)/720

CIRCUIT DESCRIPTION

8. Signaling Circuit

8-1. Encode (QT/DQT/DTMF/2-tone/5-tone/MSK)

Each signaling data signal of the QT, DQT, DTMF, 2-tone,
5-tone and MSK is generated by the DSP circuit, super­posed on a modulation signal and output from the ASIC
(IC507). Each deviation of the TX QT, DQT, DTMF, 2-tone,
5-tone and MSK tones are adjusted by changing the output
level of the DSP (IC502) and the resulting signal is routed to
the VCO and PLL.

8-2. Decode (QT/DQT/DTMF/2-tone/5-tone/MSK)

The audio signal is removed from the FM detection signal
sent to the DSP circuit and the resulting signal is decoded
by the DSP.

9. Compander Circuit

The term “compander” means compressor and expander.
The compander reduces noise by utilizing a compressor and
an expander. The DSP (IC502) performs this operation. The
Compander can be turned on or off using the FPU.

10. GPS Circuit (GPS model only)

The GPS information function can be used by setting it
through the FPU. The GPS signal of 1575.42MHz received
with the GPS active antenna (with a built-in LNA) is pro­cessed by the GPS module (A801) and input to the ASIC
(IC507) through the UART port. The ASIC (IC507) processes
the GPS data (NMEA) and sends the resulting information to
the LCD.

16

NX-720(G)/720

COMPONENTS DESCRIPTION

Display unit (X54-3830-10)

Ref. No. Part Name Description

IC1 IC LCD driver
Q3 Transistor TX/Busy LED switch
Q6 Transistor TX/Busy LED switch
Q8 Transistor LCD backlight switch
Q9 Transistor Backlight switch
Q10 Transistor Status LED switch
Q11 Transistor Backlight switch
D2 Diode Line protection
D5-9 LED Key backlight
D11-21 LED LCD backlight
D22 LED Status LED
D23 LED TX/Busy LED
D24 LED LCD backlight
D25 Varistor Line protection
D26 Diode Key control
D27 Zener diode Over DC supply protection

TX-RX unit (X57-8230-1X)

Ref. No. Part Name Description

IC1 IC AVR (80C)
IC2 IC PLL system
IC3 IC DC AMP (CV/Assist)
IC102 IC TX power module
IC103 IC OP AMP (APC)
IC201 IC DC AMP (BPF)
IC301 IC AND gate
IC303 IC FM system
IC304 IC DC AMP (RSSI)
IC401 IC AVR (33M)
IC402 IC Voltage detector (BINT)
IC404 IC AVR (50C)
IC405 IC DC/DC converter (50M)
IC406 IC AVR (33A)
IC407 IC AVR (33GPS)
IC408 IC AVR (15M)
IC409 IC AVR (33C)
IC501 IC Flash memory
IC502 IC DSP
IC503 IC SRAM
IC504 IC Reset
IC506 IC Buffer AMP (Clock)
IC507 IC ASIC
IC508 IC AND gate
IC509 IC
IC511 IC BUS buffer
IC512 IC Level shift
IC513 IC Dual BUS buffer (FNC3/FNC1)
IC514 IC Dual BUS buffer (FNC2/FNC4)
IC515 IC I/O expander
IC516 IC RS-232C driver
IC701 IC VCO MOD/VREF
IC702 IC LPF (APC/DMO)
IC703 IC MIC SUM AMP/LPF (DI)
IC705 IC BPF/Buffer AMP (SQ)
IC711 IC RX SUM AMP/LPF (RX AF)
IC712 IC D/A converter
IC713 IC MIC/RX selector
IC714 IC AF power AMP
IC716 IC Dual BUS buffer (TXD1/MKEO)
IC801 IC Dual BUS buffer (TXD2/RXD2)

Dual BUS buffer (HOOK/RXD/MKEYI)

17

NX-720(G)/720

COMPONENTS DESCRIPTION

Ref. No. Part Name Description

Q1 Transistor DC switch (Assist)
Q2 FET DC switch (Assist)
Q4 Transistor Ripple fi lter
Q5 Transistor Buffer AMP (PLL fi n)
Q6 FET RX VCO
Q7 FET TX VCO
Q8,9 FET T/R VCO switch
Q10,11 Transistor Buffer AMP
Q102 Transistor TX drive AMP
Q105 FET DC switch (H/L power)
Q106 Transistor DC switch (50C)
Q201 FET RX 1st mixer
Q202 Transistor LNA
Q303 Transistor Tripler
Q305 Transistor 1st IF AMP

Q401 Transistor
Q402 Transistor DC switch (80ANT)

Q403 FET DC switch (SB)
Q404 Transistor DC switch (80T)
Q405 Transistor DC switch (80ANT)
Q407 Transistor DC switch (50MC)
Q408 Transistor DC switch (50CS)
Q409 FET DC switch (33A_2)
Q410 Transistor DC switch (50MC)
Q411 Transistor DC switch (80T)
Q412 Transistor DC switch (80ANT)
Q414 Transistor DC switch (150C)
Q415,416 Transistor DC/DC converter
Q417 Transistor DC switch (50R)
Q418 FET DC switch (SB)
Q501 FET DC switch (System)
Q502 Transistor DC switch (Horn alert)
Q503 FET DC switch (Horn alert)
Q504 Transistor DC switch (IGN)
Q701 FET SQL noise BW switch
Q702 Transistor Noise AMP
Q703,704 Transistor MIC AGC
Q705 FET Mute (MI1)
Q706 FET Mute (MI2)
Q708 Transistor Pop noise prevention switch
Q709 FET AF mute switch
D2 Zener diode Over voltage protection

DC switch (Over DC supply pro-

tection)

Ref. No. Part Name Description

D4

D5

D6

D7

D8

D9,10

D11

D13
D14 Diode Speed up
D15
D16,17 Diode T/R switch

D101 Zener diode Over voltage protection
D102 Diode Transient voltage limiter
D103 Diode Reverse current prevention
D104,105 Diode TX power detection
D106 Diode Voltage limiter
D107 Diode Antenna switch
D108,109 Diode Over DC supply protection
D110,110 Diode Antenna switch
D112-114 Diode Over DC supply protection

D202-207
D401 Zener diode Over DC supply protection

D403,404 Diode Reverse current prevention
D405 Diode Discharge
D406 Diode DC/DC converter
D407 Diode DC/DC converter (50M)
D408,409 Diode DC/DC converter
D410 Surge absorption Surge protection
D411 Diode Reverse current prevention
D502 Diode Reverse current prevention
D504 Diode Reverse current prevention
D505-510 Diode Line protection
D511-513 Diode Reverse current prevention
D601 Diode Line protection
D701 Diode Reverse current prevention
D702 Diode Noise detector
D703,704 Diode AF detector
D705,706 Diode Line protection
D801,802 Diode Over DC supply protection

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

Variable capaci-

tance diode

RX VCO frequency control

TX VCO frequency control

PLL f-in BPF tune

RX VCO assist tune

TX VCO assist tune

RX VCO assist tune

TX VCO assist tune

PLL f-in BPF tune

FM modulation

RX BPF tune

18

PARTS LIST

NX-720(G)/720

New Parts. indicates safety critical components.

✽

Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.

Ref. No.

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New

Parts No. Description

parts

Desti­nation

NX-720(G)/720

1 1B A02-4073-21 PLASTIC CABINET
2 2B A10-4161-01 CHASSIS
3 3A A62-1200-03 PANEL ASSY

5 2B B09-0732-03 CAP(D-SUB)
6 2B B09-0754-05 CAP(SMA) GE
7 3A B43-1675-04 BADGE

9 2B E04-0454-15 RF COAXIAL RECEPTACLE(BNC)
10 2B E04-0492-05 RF COAXIAL RECEPTACLE(SMA) GE
11 2A E29-1244-14 RELAY HARDWARE(CHASSIS)
12 2B E30-7684-15 DC CORD
13 2A E37-1461-05 FLAT CABLE(30P)

15 2B F10-3183-03 SHIELDING CASE(POWER MODULE)
16 1B F10-3184-03 SHIELDING COVER(TOP)
17 1B F10-3203-02 SHIELDING CASE(LPF)

19 1A G11-4353-04 SHEET(SHIELDING/BOTTOM)
20 2B G11-4578-04 SHEET(FOR W/O SMA) E
21 1B G11-4611-04 SHEET(D-SUB)
22 1B G13-2102-04 CONDUCTIVE CUSHION
23 3B G13-2363-04 CUSHION(PANEL HOLDER)

24 1B G13-2389-04 CUSHION(SHIELDING/TOP)
25 2B G13-2395-04 CUSHION(X57)
26 2B G53-1643-04 PACKING(DC CORD)
27 2B G53-1662-04 PACKING(BNC/ANT)
28 2B G53-1768-04 PACKING(SMA) GE

31 1B G53-1819-21 PACKING(CHASSIS)
32 3A G53-1820-03 PACKING(PANEL)
33 3A G53-1858-03 PACKING(SP)

35 3A J19-5542-02 HOLDER(PANEL)

L : Scandinavia K : USA P : Canada
Y : PX (Far East, Hawaii) T : England E : Eu rope
C : China X : Australia M : Oth er Areas

NX-720(G)/720

Desti­nation

Ref. No.

Ad dress

New

Parts No. Description

parts

DISPLAY UNIT (X54-3830-10)

DISPLAY UNIT (X54-3830-10)

101 2A B11-1885-03 ILLUMINATION GUIDE
102 2A B38-0936-05 LCD
D5 -9 B30-2337-05 LED(YELLOW8)
D11 -21 B30-2337-05 LED(YELLOW8)
D22 3A B30-2321-05 LED(BLUE)

D23 3A B30-2151-05 LED(RED/GREEN)
D24 B30-2337-05 LED(YELLOW)

C1 CC73HCH1H101J CHIP C 100PF J
C2 ,3 CC73HCH1H221J CHIP C 220PF J
C4 CC73HCH1H101J CHIP C 100PF J
C5 CC73HCH1H221J CHIP C 220PF J
C6 CK73HB1H471K CHIP C 470PF K

C7 CK73HB1H102K CHIP C 1000PF K
C10 CK73HB1H102K CHIP C 1000PF K
C11 CC73HCH1H221J CHIP C 220PF J
C12 CC73HCH1H101J CHIP C 100PF J
C13 CK73HB1E103K CHIP C 0.010UF K

C14 ,15 CK73HB1H102K CHIP C 1000PF K
C21 CK73HB1E103K CHIP C 0.010UF K
C23 CK73HB1H102K CHIP C 1000PF K
C24 ,25 CK73HB1E103K CHIP C 0.010UF K
C27 CK73HB1A105K CHIP C 1.0UF K

C31 CK73HB1H102K CHIP C 1000PF K
C32 ,33 CK73HB1C473K CHIP C 0.047UF K
C34 CC73HCH1H470J CHIP C 47PF J
C35 ,36 CC73HCH1H221J CHIP C 220PF J

103 2A E29-1231-15 INTER CONNECTOR
CN1 E40-6924-05 FLAT CABLE CONNECTOR(30P)
J1 3A E58-0535-05 MODULAR JACK(MIC)

36 3A K29-9479-01 KEY TOP

A 2B N30-2605-48 PAN HEAD MACHINE SCREW GE
B 2A,2B N67-3008-48 PAN HEAD SEMS SCREW
C 2A,2B N87-2608-48 BRAZIER HEAD TAPTITE SCREW

37 3A T07-0785-15 SPEAKER

ACCESSORY
B62-2447-00
E30-7523-55 DC CORD ASSY ACCESSORY
F52-0024-05 FUSE(15A/BLADE) ACCESSORY
J29-0726-03 BRACKET ACCESSORY
N99-2039-05 SCREW SET ACCESSORY

X57-8230-12 TX-RX UNIT(FOR SERVICE) GE
X57-8230-13 TX-RX UNIT(FOR SERVICE) E

GE: NX-720(G)
E: NX-720

INSTRUCTION MANUAL ACCESSORY

104 2A J21-8629-03 MOUNTING HARDWARE(LCD)

L1 L92-0138-05 CHIP FERRITE
L2 ,3 L92-0140-05 CHIP FERRITE

CP1 RK74HB1J101J CHIP-COM 100 J 1/16W
R1 RK73HB1J101J CHIP R 100 J 1/16W
R2 -4 RK73HB1J103J CHIP R 10K J 1/16W
R5 RK73HB1J102J CHIP R 1.0K J 1/16W
R7 RK73HB1J000J CHIP R 0 J 1/16W

R9 RK73HB1J000J CHIP R 0 J 1/16W
R12 RK73HB1J101J CHIP R 100 J 1/16W
R14 RK73HB1J122J CHIP R 1.2K J 1/16W
R15 RK73HB1J000J CHIP R 0 J 1/16W
R17 RK73HB1J000J CHIP R 0 J 1/16W

R18 RK73GB2A331J CHIP R 330 J 1/10W
R19 RK73GB2A221J CHIP R 220 J 1/10W
R20 RK73HB1J000J CHIP R 0 J 1/16W
R22 RK73HB1J000J CHIP R 0 J 1/16W
R23 RK73HB1J473J CHIP R 47K J 1/16W

R24 ,25 RK73HB1J332J CHIP R 3.3K J 1/16W
R26 RK73HB1J472J CHIP R 4.7K J 1/16W
R28 RK73FB2B121J CHIP R 120 J 1/8W
R29 RK73FB2B221J CHIP R 220 J 1/8W
R34 -37 RK73GB2A271J CHIP R 270 J 1/10W

19

NX-720(G)/720

PARTS LIST

DISPLAY UNIT (X54-3830-10)
TX-RX UNIT (X57-8230-1X)

Ref. No.

R38 -40 RK73HB1J472J CHIP R 4.7K J 1/16W
R41 RK73HB1J101J CHIP R 100 J 1/16W
R42 RK73HB1J272J CHIP R 2.7K J 1/16W
R43 RK73HB1J103J CHIP R 10K J 1/16W
R44 RK73HB1J222J CHIP R 2.2K J 1/16W

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New

Parts No. Description

parts

Desti­nation

Ref. No.

C57 CC73HCH1H040B CHIP C 4.0PF B
C58 CK73HB1H471K CHIP C 470PF K
C59 ,60 CC73HCH1H040B CHIP C 4.0PF B
C61 CK73HB1H471K CHIP C 470PF K
C63 CC73HCH1HR75B CHIP C 0.75PF B

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New

Parts No. Description

parts

Desti­nation

R45 RK73HB1J472J CHIP R 4.7K J 1/16W

D1 DZ2J062(M) ZENER DIODE
D2 DA3S101F DIODE
D25 MINISMDC020F VARISTOR
D26 HN2S03FE DIODE
D27 DZ2J062(M) ZENER DIODE

IC1 LC75857W-E MOS-IC
Q3 KTC4075E(Y,GR) TRANSISTOR
Q6 KTC4075E(Y,GR) TRANSISTOR
Q8 KTC4075E(Y,GR) TRANSISTOR
Q9 QST7 TRANSISTOR

Q10 LTC014EEBFS8 TRANSISTOR
Q11 KTC4075E(Y,GR) TRANSISTOR

TX-RX UNIT (X57-8230-1X) -10: (G)E -11: E

C1 CK73HB1E103K CHIP C 0.010UF K
C2 CC73HCH1H101J CHIP C 100PF J
C3 ,4 CK73HB1H103K CHIP C 0.010UF K
C5 ,6 CC73HCH1H100B CHIP C 10PF B
C7 CK73HB1H103K CHIP C 0.010UF K

C9 CC73HCH1H100B CHIP C 10PF B
C10 ,11 CK73HB1H103K CHIP C 0.010UF K
C16 -21 CC73HCH1H101J CHIP C 100PF J
C22 CK73HB1A104K CHIP C 0.10UF K
C23 CC73HCH1H101J CHIP C 100PF J

C64 CK73FB1A106K CHIP C 10UF K
C66 CC73HCH1H100B CHIP C 10PF B
C67 CC73HCH1H060B CHIP C 6.0PF B
C68 CC73HCH1H100B CHIP C 10PF B
C69 CC73HCH1H080B CHIP C 8.0PF B

C70 CK73GB1E105K CHIP C 1.0UF K
C71 CC73HCH1H471J CHIP C 470PF J
C73 ,74 CK73HB1H103K CHIP C 0.010UF K
C76 ,77 CC73HCH1H0R5B CHIP C 0.5PF B
C78 ,79 CK73HB1H102K CHIP C 1000PF K

C80 CK73HB1H471K CHIP C 470PF K
C81 CC73HCH1H220J CHIP C 22PF J
C82 CK73HB1H102K CHIP C 1000PF K
C83 CC73HCH1H050B CHIP C 5.0PF B
C84 CC73HCH1H150J CHIP C 15PF J

C85 CK73HB1H102K CHIP C 1000PF K
C86 CK73HB1H471K CHIP C 470PF K
C87 CK73HB1H102K CHIP C 1000PF K
C88 CK73HB1A104K CHIP C 0.10UF K
C89 CC73HCH1H150G CHIP C 15PF G

C91 C93-0787-05 CHIP C 0.1UF J
C101 CK73HB1H102K CHIP C 1000PF K
C102 CK73HB1H471K CHIP C 470PF K
C103 CK73HB1H103K CHIP C 0.010UF K
C104 CK73HB1H102K CHIP C 1000PF K

C108 CK73FB1E475K CHIP C 4.7UF K
C111 CK73HB1H471K CHIP C 470PF K
C113 CK73HB1H471K CHIP C 470PF K
C116-118 CK73HB1H471K CHIP C 470PF K
C119 CC73HCH1H270J CHIP C 27PF J

C24 CK73HB1A104K CHIP C 0.10UF K
C25 ,26 CC73HCH1H101J CHIP C 100PF J
C28 CC73HCH1H101J CHIP C 100PF J
C29 CS77MA1VR15M CHIP TNTL 0.15UF 35WV
C30 CK73GB1E105K CHIP C 1.0UF K

C31 CC73HCH1H101J CHIP C 100PF J
C32 CS77BA1D100M CHIP TNTL 10UF 20WV
C33 CK73HB1H103K CHIP C 0.010UF K
C34 C93-1906-05 CHIP FILM 0.047UF 35WV
C35 CC73HCH1H060B CHIP C 6.0PF B

C36 CC73HCH1H101J CHIP C 100PF J
C37 CC73HCH1H080B CHIP C 8.0PF B
C39 CC73HCH1H330J CHIP C 33PF J
C40 CC73HCH1H080B CHIP C 8.0PF B
C41 -44 CC73HCH1H101J CHIP C 100PF J

C45 CC73HCH1H331J CHIP C 330PF J
C46 CC73HCH1H100B CHIP C 10PF B
C49 CC73HCH1H221J CHIP C 220PF J
C50 CC73HCH1H070B CHIP C 7.0PF B
C51 CK73HB1A105K CHIP C 1.0UF K

C52 CK73HB1H471K CHIP C 470PF K
C53 CC73HCH1H221J CHIP C 220PF J
C54 CC73HCH1H181J CHIP C 180PF J
C55 CC73HCH1H390G CHIP C 39PF G
C56 CC73HCH1H080B CHIP C 8.0PF B

20

C120 CC73HCH1H220J CHIP C 22PF J
C121 CC73HCH1H060B CHIP C 6.0PF B
C123 CC73HCH1H220J CHIP C 22PF J
C124 CC73HCH1H330J CHIP C 33PF J
C125 CK73HB1H471K CHIP C 470PF K

C127 CC73HCH1H220J CHIP C 22PF J
C128 CC73HCH1H470J CHIP C 47PF J
C129 CC73HCH1H330J CHIP C 33PF J
C131 CC73HCH1H101J CHIP C 100PF J
C133 CC73HCH1H221J CHIP C 220PF J

C134,135 CK73HB1H471K CHIP C 470PF K
C136 CK73FB1H471K CHIP C 470PF K
C137 CC73HCH1H101J CHIP C 100PF J
C140 CS77LA1C4R7M CHIP TNTL 4.7UF 16WV
C142 CC73HCH1H220J CHIP C 22PF J

C144 CC73HCH1H470J CHIP C 47PF J
C145 CK73HB1A104K CHIP C 0.10UF K
C146 C93-0561-05 CHIP C 12PF J
C148 CC73HCH1H101J CHIP C 100PF J
C149 CK73HB1H471K CHIP C 470PF K

C151 C93-0563-05 CHIP C 18PF J
C152 C92-0875-05 ELECTRO 47UF 25WV
C154 CK73HB1E223K CHIP C 0.022UF K
C155 CK73HB1H471K CHIP C 470PF K
C156 CC73HCH1H101J CHIP C 100PF J

GE: NX-720(G)
E: NX-720

PARTS LIST

Ref. No.

C157 CK73HB1H102K CHIP C 1000PF K
C158 CK73HB1H471K CHIP C 470PF K
C161 CC73GCH1H040C CHIP C 4.0PF C
C163 CC73GCH1H220J CHIP C 22PF J
C165 CK73HB1H471K CHIP C 470PF K

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Parts No. Description

parts

Desti­nation

NX-720(G)/720

TX-RX UNIT (X57-8230-1X)

Ref. No.

C293 CK73HB1H471K CHIP C 470PF K
C306 CK73HB1E103K CHIP C 0.010UF K
C307 CK73HB1A104K CHIP C 0.10UF K
C309 CC73HCH1H100B CHIP C 10PF B
C312 CK73HB1H103K CHIP C 0.010UF K

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New

Parts No. Description

parts

Desti­nation

C167 CC73GCH1H150J CHIP C 15PF J
C168 CK73HB1H471K CHIP C 470PF K
C171 CC73HCH1H101J CHIP C 100PF J
C172,173 CK73HB1H471K CHIP C 470PF K
C175 CC73FCH1H390J CHIP C 39PF J

C176 C93-0564-05 CHIP C 22PF J
C177,178 C93-1871-05 CHIP C 100PF J
C179 C93-0559-05 CHIP C 9.0PF D
C182 C93-1866-05 CHIP C 27PF G
C184 C93-0564-05 CHIP C 22PF J

C187,188 CK73HB1H102K CHIP C 1000PF K
C191 CC73GCH1H151J CHIP C 150PF J
C192 CC73GCH1H100C CHIP C 10PF C
C193 CC73GCH1H101J CHIP C 100PF J
C194 CC73HCH1H050B CHIP C 5.0PF B

C201 CK73HB1H103K CHIP C 0.010UF K
C202 CK73HB1E103K CHIP C 0.010UF K
C203 CK73HB1H471K CHIP C 470PF K
C204 CK73FB1E475K CHIP C 4.7UF K
C205 CK73HB1H471K CHIP C 470PF K

C207 CK73HB1H102K CHIP C 1000PF K
C208,209 CC73HCH1H120G CHIP C 12PF G
C210 CK73HB1H103K CHIP C 0.010UF K
C211 CC73HCH1H060B CHIP C 6.0PF B
C212 CC73HCH1H220G CHIP C 22PF G

C213 CC73HCH1H030B CHIP C 3.0PF B
C214 CC73HCH1H150G CHIP C 15PF G
C215,216 CK73HB1H102K CHIP C 1000PF K
C217 CC73HCH1H040B CHIP C 4.0PF B
C218 CC73HCH1H020B CHIP C 2.0PF B

C313 CK73HB1A104K CHIP C 0.10UF K
C315 CK73HB1E103K CHIP C 0.010UF K
C316 CC73HCH1H100B CHIP C 10PF B
C317 CC73HCH1H101J CHIP C 100PF J
C322 CC73HCH1H101J CHIP C 100PF J

C323 CC73HCH1H151J CHIP C 150PF J
C324 CC73HCH1H330G CHIP C 33PF G
C325 CC73HCH1H680G CHIP C 68PF G
C326 CC73HCH1H100B CHIP C 10PF B
C327 CK73HB1A104K CHIP C 0.10UF K

C330 CK73HB1A104K CHIP C 0.10UF K
C332-335 CK73HB1A104K CHIP C 0.10UF K
C336 CK73FB1A106K CHIP C 10UF K
C337 CK73HB1A104K CHIP C 0.10UF K
C338 CK73FB1A106K CHIP C 10UF K

C339 CK73HB1A104K CHIP C 0.10UF K
C340 CK73HB1H103K CHIP C 0.010UF K
C341 CK73HB1A104K CHIP C 0.10UF K
C342 CK73HB1A105K CHIP C 1.0UF K
C343-345 CK73HB1A104K CHIP C 0.10UF K

C346 CK73HB1A105K CHIP C 1.0UF K
C347 CK73HB1H103K CHIP C 0.010UF K
C348 CC73HCH1H470J CHIP C 47PF J
C350 CK73HB1H103K CHIP C 0.010UF K
C351 CC73HCH1H101J CHIP C 100PF J

C357 CC73HCH1H0R5B CHIP C 0.5PF B
C358 CC73HCH1H100B CHIP C 10PF B
C359-361 CK73HB1E103K CHIP C 0.010UF K
C366 CK73HB1E103K CHIP C 0.010UF K
C367 CK73HB1H103K CHIP C 0.010UF K

C223 CK73HB1H102K CHIP C 1000PF K
C224 CC73HCH1H220G CHIP C 22PF G
C225 CK73HB1H102K CHIP C 1000PF K
C227 CK73HB1H102K CHIP C 1000PF K
C229 CK73HB1H102K CHIP C 1000PF K

C231 CC73GCH1H060B CHIP C 6.0PF B
C232 CC73HCH1H220J CHIP C 22PF J
C233 CC73GCH1H060B CHIP C 6.0PF B
C234 CC73HCH1H390J CHIP C 39PF J
C235 CC73HCH1H270G CHIP C 27PF G

C239 CK73GB1H104K CHIP C 0.10UF K
C240 CK73GB1E105K CHIP C 1.0UF K
C246,247 CK73HB1H102K CHIP C 1000PF K
C250 CK73HB1A104K CHIP C 0.10UF K
C251 CC73HCH1H050B CHIP C 5.0PF B

C253 CK73HB1H102K CHIP C 1000PF K
C254 CC73HCH1H120G CHIP C 12PF G
C255 CC73HCH1H470J CHIP C 47PF J
C256 CC73HCH1H180G CHIP C 18PF G
C257 CK73HB1H102K CHIP C 1000PF K

C258 CC73HCH1H150G CHIP C 15PF G
C259 CK73HB1H102K CHIP C 1000PF K
C260 CC73HCH1H180G CHIP C 18PF G
C261 CC73HCH1H560J CHIP C 56PF J
C262 CK73HB1H102K CHIP C 1000PF K

GE: NX-720(G)
E: NX-720

C368 CK73HB1H471K CHIP C 470PF K
C369 CK73HB1H103K CHIP C 0.010UF K
C370 CC73HCH1H220G CHIP C 22PF G
C371 CK73HB1H103K CHIP C 0.010UF K
C401 C92-0968-05 ELECTRO 470UF 25WV

C403 CK73HB1H471K CHIP C 470PF K
C405 CK73HB1H103K CHIP C 0.010UF K
C408,409 CK73HB1H103K CHIP C 0.010UF K
C410 CK73GB1C225K CHIP C 2.2UF K
C411 CK73GB1H104K CHIP C 0.10UF K

C413 CC73HCH1H101J CHIP C 100PF J
C416 CK73HB1H103K CHIP C 0.010UF K
C417 CC73HCH1H101J CHIP C 100PF J
C420 CK73GB1E105K CHIP C 1.0UF K
C422 CK73HB1H102K CHIP C 1000PF K

C423,424 CC73HCH1H101J CHIP C 100PF J
C425 CK73HB1H103K CHIP C 0.010UF K
C427 CK73GB1H473K CHIP C 0.047UF K
C428 CK73HB1A104K CHIP C 0.10UF K
C429 CK73HB1H471K CHIP C 470PF K

C430 CK73FB1E475K CHIP C 4.7UF K
C431 CC73HCH1H101J CHIP C 100PF J
C432 CK73GB1H104K CHIP C 0.10UF K
C433,434 CK73FB1E475K CHIP C 4.7UF K
C435 CK73GB1C225K CHIP C 2.2UF K

21

NX-720(G)/720

PARTS LIST

TX-RX UNIT (X57-8230-1X)

Ref. No.

C436 CK73HB1H103K CHIP C 0.010UF K
C437 CK73FB1E475K CHIP C 4.7UF K
C438,439 CK73GB1H104K CHIP C 0.10UF K
C440 C92-0875-05 ELECTRO 47UF 25WV
C441 CK73GB1C225K CHIP C 2.2UF K

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New

Parts No. Description

parts

Desti­nation

Ref. No.

C559 CK73FB1A106K CHIP C 10UF K
C560 CC73HCH1H030B CHIP C 3.0PF B
C563 CC73HCH1H101J CHIP C 100PF J
C565-568 CK73HB1A104K CHIP C 0.10UF K
C569 CK73HB1H103K CHIP C 0.010UF K

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New

Parts No. Description

parts

Desti­nation

C442 CK73HB1H103K CHIP C 0.010UF K
C443 CK73GB1E105K CHIP C 1.0UF K
C445,446 CK73HB1H103K CHIP C 0.010UF K
C447 CK73GB1E105K CHIP C 1.0UF K
C448 CK73HB1H103K CHIP C 0.010UF K

C449 CK73GB1E105K CHIP C 1.0UF K
C450,451 CK73FB1A106K CHIP C 10UF K
C452 CS77LA1C4R7M CHIP TNTL 4.7UF 16WV
C453 CK73HB1H103K CHIP C 0.010UF K
C454,455 CK73GB1C225K CHIP C 2.2UF K

C456 CK73HB1H103K CHIP C 0.010UF K
C457,458 CC73HCH1H101J CHIP C 100PF J
C460 CC73HCH1H101J CHIP C 100PF J
C461 CK73HB1A105K CHIP C 1.0UF K
C462 CK73GB1E105K CHIP C 1.0UF K

C463 CC73HCH1H101J CHIP C 100PF J
C464 CK73HB1A105K CHIP C 1.0UF K
C465,466 CK73GB1E105K CHIP C 1.0UF K
C468 CK73HB1H103K CHIP C 0.010UF K
C469 CK73HB1A105K CHIP C 1.0UF K

C471 CC73HCH1H101J CHIP C 100PF J
C472 CK73HB1H102K CHIP C 1000PF K
C475 CK73GB1E105K CHIP C 1.0UF K
C476 CK73HB1A104K CHIP C 0.10UF K
C477 CK73GB1H104K CHIP C 0.10UF K

C501-504 CK73HB1A104K CHIP C 0.10UF K
C505-507 CK73GB0J106K CHIP C 10UF K
C508,509 CK73HB1A105K CHIP C 1.0UF K
C510 CK73HB1A104K CHIP C 0.10UF K
C512 CK73HB1A104K CHIP C 0.10UF K

C570 CK73HB1A105K CHIP C 1.0UF K
C572-576 CK73HB1A104K CHIP C 0.10UF K
C577 CK73HB1H103K CHIP C 0.010UF K
C578 CK73HB1A105K CHIP C 1.0UF K
C579-581 CK73HB1H103K CHIP C 0.010UF K

C602 CK73HB1H103K CHIP C 0.010UF K
C603 CC73HCH1H101J CHIP C 100PF J
C604 CK73HB1H102K CHIP C 1000PF K
C605 CC73HCH1H101J CHIP C 100PF J
C607 CC73HCH1H101J CHIP C 100PF J

C609-611 CC73HCH1H470J CHIP C 47PF J
C612 CC73HCH1H101J CHIP C 100PF J
C613 CK73HB1H103K CHIP C 0.010UF K
C614-618 CC73HCH1H101J CHIP C 100PF J
C620 CC73HCH1H101J CHIP C 100PF J

C621 CK73HB1H102K CHIP C 1000PF K
C622-624 CK73HB1H103K CHIP C 0.010UF K
C625 CK73HB1A104K CHIP C 0.10UF K
C626 CK73GB1H103K CHIP C 0.010UF K
C627-630 CK73GB1E105K CHIP C 1.0UF K

C632 CK73HB1H102K CHIP C 1000PF K
C633-642 CC73HCH1H101J CHIP C 100PF J
C643 CK73HB1E223K CHIP C 0.022UF K
C644 CC73HCH1H101J CHIP C 100PF J
C645 CK73GB1H103K CHIP C 0.010UF K

C646 CC73HCH1H101J CHIP C 100PF J
C647 CK73HB1H103K CHIP C 0.010UF K
C648 CK73GB1H104K CHIP C 0.10UF K
C650-652 CK73HB1A104K CHIP C 0.10UF K
C660 CC73HCH1H101J CHIP C 100PF J

C514-516 CK73HB1A104K CHIP C 0.10UF K
C518-520 CK73HB1A104K CHIP C 0.10UF K
C521 CC73HCH1H101J CHIP C 100PF J
C522,523 CK73HB1A104K CHIP C 0.10UF K
C524 CK73HB1A105K CHIP C 1.0UF K

C525-531 CK73HB1A104K CHIP C 0.10UF K
C532 CK73HB1H103K CHIP C 0.010UF K
C533 CK73GB0J106K CHIP C 10UF K
C534 CK73HB1A104K CHIP C 0.10UF K
C535 CK73HB1H272K CHIP C 2700PF K

C536 CK73HB1A104K CHIP C 0.10UF K
C537 CK73HB1H102K CHIP C 1000PF K
C541 CK73HB1A104K CHIP C 0.10UF K
C542 CK73HB1H103K CHIP C 0.010UF K
C543,544 CK73HB1A104K CHIP C 0.10UF K

C545 CK73FB1A106K CHIP C 10UF K
C546 CK73HB1H103K CHIP C 0.010UF K
C547 CC73HCH1H101J CHIP C 100PF J
C548 CK73HB1H103K CHIP C 0.010UF K
C549 CK73HB1A104K CHIP C 0.10UF K

C551 CK73HB1A104K CHIP C 0.10UF K
C552 CK73HB1H103K CHIP C 0.010UF K
C553 CK73HB1A105K CHIP C 1.0UF K
C555,556 CK73HB1H103K CHIP C 0.010UF K
C558 CK73HB1A104K CHIP C 0.10UF K

22

C661 CC73HCH1H470J CHIP C 47PF J
C680 CK73HB1A104K CHIP C 0.10UF K
C701 CK73HB1H682K CHIP C 6800PF K
C702 CK73HB1H102K CHIP C 1000PF K
C704 CK73HB1A105K CHIP C 1.0UF K

C705 CC73HCH1H470J CHIP C 47PF J
C706 CK73HB1A104K CHIP C 0.10UF K
C707 CK73HB1H681K CHIP C 680PF K
C708 CK73HB1H102K CHIP C 1000PF K
C709 CC73HCH1H270J CHIP C 27PF J

C711 CC73HCH1H331J CHIP C 330PF J
C712 CC73HCH1H181J CHIP C 180PF J
C714 CC73HCH1H680J CHIP C 68PF J
C716 CC73HCH1H101J CHIP C 100PF J
C718 CK73HB1A104K CHIP C 0.10UF K

C719 CC73HCH1H101J CHIP C 100PF J
C720 CK73HB1A104K CHIP C 0.10UF K
C722 CK73HB1A104K CHIP C 0.10UF K
C723 CC73HCH1H470J CHIP C 47PF J
C725 CC73HCH1H121J CHIP C 120PF J

C728 CK73HB1H821K CHIP C 820PF K
C729 CK73HB1H681K CHIP C 680PF K
C732 CK73HB1H102K CHIP C 1000PF K
C733 CK73FB1E475K CHIP C 4.7UF K
C734 CK73HB1H472K CHIP C 4700PF K

GE: NX-720(G)
E: NX-720

PARTS LIST

Ref. No.

C735 CK73GB0J106K CHIP C 10UF K
C738 CK73HB1A104K CHIP C 0.10UF K
C739 CK73HB1A105K CHIP C 1.0UF K
C740 CK73HB1H102K CHIP C 1000PF K
C741 CK73HB1A224K CHIP C 0.22UF K

C743 CC73HCH1H470J CHIP C 47PF J
C744 CK73HB1A224K CHIP C 0.22UF K
C746 CK73HB1A104K CHIP C 0.10UF K
C747 CC73HCH1H221J CHIP C 220PF J
C749 CK73HB1H102K CHIP C 1000PF K

C752,753 CK73HB1A104K CHIP C 0.10UF K
C758 CC73HCH1H101J CHIP C 100PF J
C762 CK73HB1H103K CHIP C 0.010UF K
C765 CC73HCH1H220J CHIP C 22PF J
C766,767 CK73GB0J475K CHIP C 4.7UF K

C769 CK73HB1E103K CHIP C 0.010UF K
C770 CK73HB1A104K CHIP C 0.10UF K
C771 CK73HB1H122K CHIP C 1200PF K
C773 CK73HB1E103K CHIP C 0.010UF K
C774 CK73HB1A104K CHIP C 0.10UF K

C775 CC73HCH1H101J CHIP C 100PF J
C776 CK73HB1A393K CHIP C 0.039UF K
C777 CK73HB1A104K CHIP C 0.10UF K
C778 CK73HB1A105K CHIP C 1.0UF K
C779,780 CC73HCH1H101J CHIP C 100PF J

C782 CK73HB1A104K CHIP C 0.10UF K
C784 CK73FB1A106K CHIP C 10UF K
C786 CK73HB1A104K CHIP C 0.10UF K
C788 CK73FB1E475K CHIP C 4.7UF K
C790,791 CK73FB1A106K CHIP C 10UF K

C796 CK73GB1E105K CHIP C 1.0UF K
C797,798 CK73GB1C224K CHIP C 0.22UF K
C801 C92-0875-05 ELECTRO 47UF 25WV
C802 CK73HB1H102K CHIP C 1000PF K
C803,804 C92-0906-05 ELECTRO 330UF 16WV

C805 CK73HB1H102K CHIP C 1000PF K
C806 CK73GB1E105K CHIP C 1.0UF K
C807 CK73HB1C473K CHIP C 0.047UF K
C808 CK73HB1A683K CHIP C 0.068UF K
C809 CK73HB1H102K CHIP C 1000PF K GE

C810 CK73FB1E475K CHIP C 4.7UF K
C811 CK73HB1H102K CHIP C 1000PF K
C812 CK73FB1A106K CHIP C 10UF K
C813 CK73GB0J106K CHIP C 10UF K E
C813,814 CK73GB0J106K CHIP C 10UF K GE

C815 CK73HB1A104K CHIP C 0.10UF K GE
C816 CK73HB1H102K CHIP C 1000PF K GE
C820 CK73HB1A104K CHIP C 0.10UF K GE
C821,822 CC73HCH1H180J CHIP C 18PF J GE
C823 CK73HB1H102K CHIP C 1000PF K GE

C824,825 CC73HCH1H180J CHIP C 18PF J GE
C826 CK73HB1A104K CHIP C 0.10UF K GE
C829 CK73GB0J106K CHIP C 10UF K
C830,831 CK73HB1A104K CHIP C 0.10UF K
C832,833 CK73HB1H102K CHIP C 1000PF K

CN10-15 E23-1278-05 TERMINAL
CN203-206 E23-1278-05 TERMINAL
CN514 E40-6847-05 FLAT CABLE CONNECTOR
CN801 E04-0410-05 PIN SOCKET(3P) GE
J501 1B E58-0536-05 D-SUB SOCKET(15P)

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parts

Desti­nation

NX-720(G)/720

TX-RX UNIT (X57-8230-1X)

Ref. No.

J701 2B E11-0425-05 3.5D PHONE JACK(3P)

F401 F53-0328-15 FUSE(5A)
F501 F53-0324-15 FUSE(2.5A)
F502 F53-0315-15 FUSE(250MA)
F503 F53-0316-15 FUSE(375MA)
F701 F53-0324-15 FUSE(2.5A)

CF1 L72-1017-05 CERAMIC FILTER(450KHZ)
CF2 L72-1040-05 CERAMIC FILTER(450KHZ)
L1 L92-0163-05 BEADS CORE
L2 L41-4795-39 SMALL FIXED INDUCTOR(4.7UH)
L3 L92-0163-05 BEADS CORE

L4 L40-1075-71 SMALL FIXED INDUCTOR(10NH)
L5 L92-0163-05 BEADS CORE
L6 ,7 L40-1001-86 SMALL FIXED INDUCTOR(10UH)
L10 L40-5663-71 SMALL FIXED INDUCTOR(5.6NH)
L11 L40-2285-92 SMALL FIXED INDUCTOR(220NH)

L12 L40-3391-86 SMALL FIXED INDUCTOR(3.3UH)
L13 L40-2285-92 SMALL FIXED INDUCTOR(220NH)
L14 L40-3391-86 SMALL FIXED INDUCTOR(3.3UH)
L15 ,16 L40-1885-92 SMALL FIXED INDUCTOR(180NH)
L17 L40-6865-71 SMALL FIXED INDUCTOR(6.8NH)

L18 L34-4611-15 AIR-CORE COIL(10T)
L19 L92-0163-05 BEADS CORE
L20 L34-4609-15 AIR-CORE COIL(8T)
L21 L40-4775-92 SMALL FIXED INDUCTOR(47NH)
L22 L92-0446-05 BEADS CORE

L23 ,24 L40-3391-86 SMALL FIXED INDUCTOR(3.3UH)
L25 L40-1285-71 SMALL FIXED INDUCTOR(120NH)
L26 L92-0163-05 BEADS CORE
L27 L40-1085-92 SMALL FIXED INDUCTOR(100NH)
L102 L40-6875-92 SMALL FIXED INDUCTOR(68NH)

L103 L92-0140-05 CHIP FERRITE
L104 L40-3375-92 SMALL FIXED INDUCTOR(33NH)
L105 L92-0163-05 BEADS CORE
L106 L40-3975-92 SMALL FIXED INDUCTOR(39NH)
L107 L92-0140-05 CHIP FERRITE

L108-110 L92-0179-05 CHIP FERRITE
L111 L92-0163-05 BEADS CORE
L112 L34-4478-15 AIR-CORE COIL(9.5T)
L113 L34-4909-05 AIR-CORE COIL(5T)
L114 L34-4478-15 AIR-CORE COIL(9.5T)

L115 L34-4670-05 AIR-CORE COIL(5T)
L116 L34-4481-15 AIR-CORE COIL(6T)
L117 L34-4736-05 AIR-CORE COIL(5T)
L118 L40-6875-92 SMALL FIXED INDUCTOR(68NH)
L130 L40-5675-71 SMALL FIXED INDUCTOR(56NH)

L201 L92-0138-05 CHIP FERRITE
L202 L41-5685-39 SMALL FIXED INDUCTOR(0.56UH)
L203 L41-2785-39 SMALL FIXED INDUCTOR(0.27UH)
L204 L40-3375-71 SMALL FIXED INDUCTOR(33NH)
L205 L40-3975-71 SMALL FIXED INDUCTOR(39NH)

L206 L40-1085-71 SMALL FIXED INDUCTOR(100NH)
L207 L41-2285-14 SMALL FIXED INDUCTOR(220NH)
L209,210 L41-2778-14 SMALL FIXED INDUCTOR(27NH)
L212 L92-0138-05 CHIP FERRITE
L213 L41-1085-14 SMALL FIXED INDUCTOR(100NH)

L214 L40-1275-92 SMALL FIXED INDUCTOR(12NH)
L215,216 L41-3378-14 SMALL FIXED INDUCTOR(33NH)
L220 L40-2785-92 SMALL FIXED INDUCTOR(270NH)

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Desti­nation

GE: NX-720(G)
E: NX-720

23

NX-720(G)/720

TX-RX UNIT (X57-8230-1X)

Ref. No.

L221 L40-5663-71 SMALL FIXED INDUCTOR(5.6NH)
L232,233 L41-3978-14 SMALL FIXED INDUCTOR(39NH)
L301 L41-1585-14 SMALL FIXED INDUCTOR(150N)
L302 L40-5681-86 SMALL FIXED INDUCTOR(0.56UH)
L304 L40-5675-92 SMALL FIXED INDUCTOR(56NH)

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parts

PARTS LIST

Desti­nation

Ref. No.

R30 RK73HB1J184J CHIP R 180K J 1/16W
R31 RK73HB1J473J CHIP R 47K J 1/16W
R33 RK73HB1J472J CHIP R 4.7K J 1/16W
R34 RK73HB1J182J CHIP R 1.8K J 1/16W
R35 -38 RK73HB1J000J CHIP R 0 J 1/16W

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Parts No. Description

parts

Desti­nation

L307 L40-2291-86 SMALL FIXED INDUCTOR(2.2UH)
L309 L40-1085-57 SMALL FIXED INDUCTOR(100NH)
L310 L92-0138-05 CHIP FERRITE
L317 L41-3985-39 SMALL FIXED INDUCTOR(0.39UH)
L319 L41-1885-39 SMALL FIXED INDUCTOR(0.18UH)

L404 L92-0639-05 CHIP FERRITE
L405 L33-1496-05 SMALL FIXED INDUCTOR(22UH)
L501 L92-0138-05 CHIP FERRITE
L503 L92-0138-05 CHIP FERRITE
L504-506 L92-0162-05 BEADS CORE

L508 L92-0138-05 CHIP FERRITE
L510 L92-0138-05 CHIP FERRITE
L801 L79-1958-05 FILTER GE
L802 L40-2775-57 SMALL FIXED INDUCTOR(27.0NH) GE
L805,806 L92-0138-05 CHIP FERRITE GE

X1 L77-3073-05 TCXO(16.8MHZ)
X501 L77-3015-05 TCXO(18.432MHZ)
XF1 L71-0678-05 MCF(49.95MHZ)

CP1 RK74HB1J100J CHIP-COM 10 J 1/16W
CP501 RK74HB1J104J CHIP-COM 100K J 1/16W
CP502 RK74HA1J104J CHIP-COM 100K J 1/16W
CP503 RK74HB1J104J CHIP-COM 100K J 1/16W
CP504 RK74HA1J101J CHIP-COM 100 J 1/16W

CP505 RK74HA1J104J CHIP-COM 100K J 1/16W
CP506-508 RK74HB1J104J CHIP-COM 100K J 1/16W
CP510 RK74HA1J104J CHIP-COM 100K J 1/16W
CP511 RK74HA1J101J CHIP-COM 100 J 1/16W
CP512 RK74HA1J104J CHIP-COM 100K J 1/16W

CP513 RK74HB1J104J CHIP-COM 100K J 1/16W
CP514 RK74HA1J104J CHIP-COM 100K J 1/16W
CP515 RK74HA1J101J CHIP-COM 100 J 1/16W
CP516 RK74HB1J101J CHIP-COM 100 J 1/16W
CP701 RK74HB1J101J CHIP-COM 100 J 1/16W

CP703,704 RK74HB1J104J CHIP-COM 100K J 1/16W
CP705,706 RK74HA1J104J CHIP-COM 100K J 1/16W
CP707 RK74HB1J102J CHIP-COM 1.0K J 1/16W
R1 RK73HB1J000J CHIP R 0 J 1/16W
R10 RK73HB1J100J CHIP R 10 J 1/16W

R12 RK73HB1J683J CHIP R 68K J 1/16W
R13 ,14 RK73HB1J473J CHIP R 47K J 1/16W
R15 RK73HB1J100J CHIP R 10 J 1/16W
R16 RK73HB1J102J CHIP R 1.0K J 1/16W
R17 RK73HB1J104J CHIP R 100K J 1/16W

R18 RK73HB1J102J CHIP R 1.0K J 1/16W
R19 ,20 RK73HB1J000J CHIP R 0 J 1/16W
R21 RK73HB1J470J CHIP R 47 J 1/16W
R22 RK73HB1J121J CHIP R 120 J 1/16W
R23 RK73HB1J100J CHIP R 10 J 1/16W

R24 RK73HH1J391D CHIP R 390 D 1/16W
R25 RK73HB1J104J CHIP R 100K J 1/16W
R26 RK73HB1J102J CHIP R 1.0K J 1/16W
R27 RK73HB1J103J CHIP R 10K J 1/16W
R28 RK73HB1J106J CHIP R 10M J 1/16W

R29 RK73HB1J470J CHIP R 47 J 1/16W

R39 RK73HB1J103J CHIP R 10K J 1/16W
R42 ,43 RK73HB1J104J CHIP R 100K J 1/16W
R44 RK73HB1J273J CHIP R 27K J 1/16W
R45 ,46 RK73HB1J473J CHIP R 47K J 1/16W
R48 RK73HB1J472J CHIP R 4.7K J 1/16W

R50 RK73HB1J560J CHIP R 56 J 1/16W
R51 RK73HB1J561J CHIP R 560 J 1/16W
R52 RK73HB1J474J CHIP R 470K J 1/16W
R53 RK73HB1J563J CHIP R 56K J 1/16W
R54 RN73HH1J331D CHIP R 330 D 1/16W

R55 RN73HH1J221D CHIP R 220 D 1/16W
R56 RK73HB1J000J CHIP R 0 J 1/16W
R57 ,58 RN73HH1J220D CHIP R 22 D 1/16W
R59 RK73HB1J102J CHIP R 1.0K J 1/16W
R60 RK73HB1J473J CHIP R 47K J 1/16W

R61 RK73HB1J154J CHIP R 150K J 1/16W
R62 RK73HB1J101J CHIP R 100 J 1/16W
R63 RK73HB1J103J CHIP R 10K J 1/16W
R64 RK73HB1J822J CHIP R 8.2K J 1/16W
R65 -67 RK73HB1J101J CHIP R 100 J 1/16W

R69 RK73HB1J472J CHIP R 4.7K J 1/16W
R70 RK73HB1J474J CHIP R 470K J 1/16W
R71 RK73HB1J101J CHIP R 100 J 1/16W
R72 RK73HB1J102J CHIP R 1.0K J 1/16W
R73 RK73GB2A000J CHIP R 0 J 1/10W

R75 RK73HB1J100J CHIP R 10 J 1/16W
R76 RK73HB1J000J CHIP R 0 J 1/16W
R80 -83 RK73GB2A000J CHIP R 0 J 1/10W
R86 -88 RK73HB1J000J CHIP R 0 J 1/16W
R101 RK73HB1J332J CHIP R 3.3K J 1/16W

R103 RK73HB1J000J CHIP R 0 J 1/16W
R111 RK73HB1J272J CHIP R 2.7K J 1/16W
R112 RK73HB1J182J CHIP R 1.8K J 1/16W
R113 RK73GB2A680J CHIP R 68 J 1/10W
R114 RK73HB1J331J CHIP R 330 J 1/16W

R115 RK73GB2A680J CHIP R 68 J 1/10W
R120 RK73HB1J153J CHIP R 15K J 1/16W
R121 RK73FB2B471J CHIP R 470 J 1/8W
R122,123 RK73FB2B220J CHIP R 22 J 1/8W
R125 RK73FB2B471J CHIP R 470 J 1/8W

R128 RK73HB1J471J CHIP R 470 J 1/16W
R130 RK73HB1J273J CHIP R 27K J 1/16W
R131 RK73HB1J103J CHIP R 10K J 1/16W
R133 RK73HB1J153J CHIP R 15K J 1/16W
R134 RK73GB2A181J CHIP R 180 J 1/10W

R135 RK73HB1J104J CHIP R 100K J 1/16W
R136 RK73GB2A181J CHIP R 180 J 1/10W
R137 RK73HB1J104J CHIP R 100K J 1/16W
R138 RK73HB1J103J CHIP R 10K J 1/16W
R139 RK73GH2A101D CHIP R 100 D 1/10W

R141 RK73HB1J333J CHIP R 33K J 1/16W
R142 RK73HB1J000J CHIP R 0 J 1/16W
R143 RK73HB1J104J CHIP R 100K J 1/16W
R145 RK73GB2A000J CHIP R 0 J 1/10W
R146 RK73HB1J393J CHIP R 39K J 1/16W

24

GE: NX-720(G)
E: NX-720

PARTS LIST

Ref. No.

R147 RK73HB1J124J CHIP R 120K J 1/16W
R148 RK73HB1J000J CHIP R 0 J 1/16W
R149 RK73HB1J103J CHIP R 10K J 1/16W
R150 RK73HB1J124J CHIP R 120K J 1/16W
R152 RK73HB1J102J CHIP R 1.0K J 1/16W

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parts

Desti­nation

NX-720(G)/720

TX-RX UNIT (X57-8230-1X)

Ref. No.

R341 RK73HB1J103J CHIP R 10K J 1/16W
R342 RK73HB1J104J CHIP R 100K J 1/16W
R343 RK73HB1J223J CHIP R 22K J 1/16W
R344 RK73HB1J272J CHIP R 2.7K J 1/16W
R345 RK73HB1J000J CHIP R 0 J 1/16W

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Parts No. Description

parts

Desti­nation

R154 RK73HB1J000J CHIP R 0 J 1/16W
R155 RK73HB1J223J CHIP R 22K J 1/16W
R157,158 RK73HB1J333J CHIP R 33K J 1/16W
R159,160 RK73HB1J000J CHIP R 0 J 1/16W
R161 RK73HB1J104J CHIP R 100K J 1/16W

R167 RK73HB1J153J CHIP R 15K J 1/16W
R168,169 RK73EB2E241J CHIP R 240 J 1/4W
R171 2B R92-1061-05 JUMPER REST 0 OHM
R176 RK73GB2A471J CHIP R 470 J 1/10W
R177,178 RK73HB1J000J CHIP R 0 J 1/16W

R179,180 RK73HB1J333J CHIP R 33K J 1/16W
R181 RK73HB1J000J CHIP R 0 J 1/16W
R183 RK73HB1J103J CHIP R 10K J 1/16W
R184 RK73HB1J473J CHIP R 47K J 1/16W
R201 RK73HB1J470J CHIP R 47 J 1/16W

R203 RK73HB1J681J CHIP R 680 J 1/16W
R204 RK73HB1J472J CHIP R 4.7K J 1/16W
R205 RK73HB1J151J CHIP R 150 J 1/16W
R207 RK73HB1J104J CHIP R 100K J 1/16W
R208 RK73HB1J184J CHIP R 180K J 1/16W

R209 RK73HB1J104J CHIP R 100K J 1/16W
R210 RK73HB1J224J CHIP R 220K J 1/16W
R212 RK73HB1J104J CHIP R 100K J 1/16W
R223 RK73HB1J000J CHIP R 0 J 1/16W
R230 RK73HB1J000J CHIP R 0 J 1/16W

R233 RK73HB1J274J CHIP R 270K J 1/16W
R234 RK73HB1J104J CHIP R 100K J 1/16W
R235 RK73HB1J103J CHIP R 10K J 1/16W
R237 RK73HB1J104J CHIP R 100K J 1/16W
R241 RK73HB1J103J CHIP R 10K J 1/16W

R350 RK73HB1J103J CHIP R 10K J 1/16W
R351 RK73HB1J104J CHIP R 100K J 1/16W
R355 RK73HB1J000J CHIP R 0 J 1/16W
R357 RK73HB1J124J CHIP R 120K J 1/16W
R358 RK73HB1J333J CHIP R 33K J 1/16W

R368 RK73HB1J221J CHIP R 220 J 1/16W
R378 RK73HB1J394J CHIP R 390K J 1/16W
R379 RK73HB1J222J CHIP R 2.2K J 1/16W
R381 RK73HB1J221J CHIP R 220 J 1/16W
R390 RK73HB1J103J CHIP R 10K J 1/16W

R394 RK73HB1J181J CHIP R 180 J 1/16W
R401 RK73HB1J471J CHIP R 470 J 1/16W
R402 RK73HB1J103J CHIP R 10K J 1/16W
R403 RK73HH1J274D CHIP R 270K D 1/16W
R404 RK73HH1J104D CHIP R 100K D 1/16W

R405,406 RK73HB1J103J CHIP R 10K J 1/16W
R407 RK73HB1J472J CHIP R 4.7K J 1/16W
R408 RK73HB1J684J CHIP R 680K J 1/16W
R409 RK73HB1J104J CHIP R 100K J 1/16W
R410 RK73GB2A4R7J CHIP R 4.7 J 1/10W

R411 RK73HB1J473J CHIP R 47K J 1/16W
R412,413 RK73GB2A100J CHIP R 10 J 1/10W
R414,415 RK73HB1J103J CHIP R 10K J 1/16W
R417 RK73HB1J104J CHIP R 100K J 1/16W
R418 RK73HB1J000J CHIP R 0 J 1/16W

R419 RK73HB1J272J CHIP R 2.7K J 1/16W
R421 RK73HB1J472J CHIP R 4.7K J 1/16W
R422 RK73HB1J474J CHIP R 470K J 1/16W
R423 RK73HB1J472J CHIP R 4.7K J 1/16W
R424 RK73HB1J103J CHIP R 10K J 1/16W

R242 RK73HB1J154J CHIP R 150K J 1/16W
R243 RK73HB1J104J CHIP R 100K J 1/16W
R245 RK73HB1J102J CHIP R 1.0K J 1/16W
R246 RK73HB1J100J CHIP R 10 J 1/16W
R247 RK73HB1J390J CHIP R 39 J 1/16W

R249 RK73HB1J472J CHIP R 4.7K J 1/16W
R250 RK73HB1J222J CHIP R 2.2K J 1/16W
R255-258 RK73HB1J104J CHIP R 100K J 1/16W
R259 RK73HB1J000J CHIP R 0 J 1/16W
R303-305 RK73HB1J102J CHIP R 1.0K J 1/16W

R306 RK73HB1J334J CHIP R 330K J 1/16W
R307 RK73HB1J561J CHIP R 560 J 1/16W
R308 RK73HB1J000J CHIP R 0 J 1/16W
R315 RK73HB1J000J CHIP R 0 J 1/16W
R316 RK73HB1J332J CHIP R 3.3K J 1/16W

R323 RK73HB1J000J CHIP R 0 J 1/16W
R324 RK73HB1J183J CHIP R 18K J 1/16W
R326 RK73GB2A331J CHIP R 330 J 1/10W
R328 RK73HB1J183J CHIP R 18K J 1/16W
R329 RK73HB1J100J CHIP R 10 J 1/16W

R332 RK73HB1J000J CHIP R 0 J 1/16W
R336,337 RK73HB1J102J CHIP R 1.0K J 1/16W
R338 RK73HB1J473J CHIP R 47K J 1/16W
R339 RK73HB1J153J CHIP R 15K J 1/16W
R340 RK73HB1J274J CHIP R 270K J 1/16W

GE: NX-720(G)
E: NX-720

R425 RK73HH1J124D CHIP R 120K D 1/16W
R426 RK73HH1J183D CHIP R 18K D 1/16W
R427 RK73HH1J223D CHIP R 22K D 1/16W
R428 RK73HB1J102J CHIP R 1.0K J 1/16W
R429 RK73HB1J000J CHIP R 0 J 1/16W

R430 RK73HB1J102J CHIP R 1.0K J 1/16W
R431 RK73HB1J000J CHIP R 0 J 1/16W
R432 RK73HB1J103J CHIP R 10K J 1/16W
R433 RK73HB1J274J CHIP R 270K J 1/16W
R434 RK73HB1J103J CHIP R 10K J 1/16W

R435 RK73HB1J000J CHIP R 0 J 1/16W
R438 RK73GB2A100J CHIP R 10 J 1/10W
R439 RK73HB1J474J CHIP R 470K J 1/16W
R440 RK73HB1J000J CHIP R 0 J 1/16W
R441 RK73HB1J272J CHIP R 2.7K J 1/16W

R501 RK73HB1J220J CHIP R 22 J 1/16W
R503,504 RK73HB1J104J CHIP R 100K J 1/16W
R505,506 RK73GB2A000J CHIP R 0 J 1/10W
R508-511 RK73HB1J101J CHIP R 100 J 1/16W
R512 RK73HB1J104J CHIP R 100K J 1/16W

R513 RK73HB1J000J CHIP R 0 J 1/16W
R515-517 RK73HB1J000J CHIP R 0 J 1/16W
R518 RK73HB1J101J CHIP R 100 J 1/16W
R519 RK73HB1J000J CHIP R 0 J 1/16W
R521,522 RK73HB1J104J CHIP R 100K J 1/16W

25

NX-720(G)/720

PARTS LIST

TX-RX UNIT (X57-8230-1X)

Ref. No.

R524 RK73HB1J000J CHIP R 0 J 1/16W
R525 RK73HB1J474J CHIP R 470K J 1/16W
R526 RK73HB1J104J CHIP R 100K J 1/16W
R531 RK73HB1J104J CHIP R 100K J 1/16W
R532 RK73HB1J000J CHIP R 0 J 1/16W

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New

Parts No. Description

parts

Desti­nation

Ref. No.

R669-671 RK73HB1J101J CHIP R 100 J 1/16W
R672 RK73GB2A471J CHIP R 470 J 1/10W
R673 RK73HB1J104J CHIP R 100K J 1/16W
R674 RK73HB1J105J CHIP R 1.0M J 1/16W
R677-680 RK73GB2A000J CHIP R 0 J 1/10W

Ad dress

New

Parts No. Description

parts

Desti­nation

R533,534 RK73HB1J473J CHIP R 47K J 1/16W
R536 RK73HB1J000J CHIP R 0 J 1/16W
R541 RK73HB1J101J CHIP R 100 J 1/16W
R546 RK73HB1J000J CHIP R 0 J 1/16W
R549 RK73HB1J103J CHIP R 10K J 1/16W

R550 RK73HB1J104J CHIP R 100K J 1/16W
R552,553 RK73HB1J472J CHIP R 4.7K J 1/16W
R554 RK73HB1J332J CHIP R 3.3K J 1/16W
R555 RK73HB1J102J CHIP R 1.0K J 1/16W
R556 RK73HB1J220J CHIP R 22 J 1/16W

R557 RK73HB1J153J CHIP R 15K J 1/16W
R558 RK73HB1J220J CHIP R 22 J 1/16W
R559 RK73HB1J392J CHIP R 3.9K J 1/16W
R560 RK73HB1J474J CHIP R 470K J 1/16W
R561 RK73HB1J000J CHIP R 0 J 1/16W GE

R566 RK73HB1J474J CHIP R 470K J 1/16W
R567 RK73HB1J102J CHIP R 1.0K J 1/16W
R568,569 RK73HB1J000J CHIP R 0 J 1/16W
R571,572 RK73HB1J000J CHIP R 0 J 1/16W
R580 RK73HB1J332J CHIP R 3.3K J 1/16W

R581 RK73HB1J104J CHIP R 100K J 1/16W
R583 RK73HH1J104D CHIP R 100K D 1/16W
R584 RK73HB1J473J CHIP R 47K J 1/16W
R599 RK73HB1J104J CHIP R 100K J 1/16W
R603 RK73HB1J474J CHIP R 470K J 1/16W

R606 RK73HB1J105J CHIP R 1.0M J 1/16W
R610 RK73HB1J474J CHIP R 470K J 1/16W
R611 RK73HB1J103J CHIP R 10K J 1/16W
R612 RK73HB1J102J CHIP R 1.0K J 1/16W
R613 RK73HB1J103J CHIP R 10K J 1/16W

R681 RK73HB1J000J CHIP R 0 J 1/16W
R682,683 RK73GB2A000J CHIP R 0 J 1/10W
R684 RK73HB1J473J CHIP R 47K J 1/16W
R685 RK73HB1J103J CHIP R 10K J 1/16W
R686 RK73HB1J223J CHIP R 22K J 1/16W

R687 RK73HB1J103J CHIP R 10K J 1/16W
R688 RK73HB1J102J CHIP R 1.0K J 1/16W
R690 RK73HB1J102J CHIP R 1.0K J 1/16W
R701 RK73HB1J103J CHIP R 10K J 1/16W
R702 RK73HB1J222J CHIP R 2.2K J 1/16W

R703 RK73HB1J563J CHIP R 56K J 1/16W
R704 RK73HB1J153J CHIP R 15K J 1/16W
R705 RK73HB1J683J CHIP R 68K J 1/16W
R706 RK73HB1J823J CHIP R 82K J 1/16W
R707 RK73HB1J182J CHIP R 1.8K J 1/16W

R708 RK73HB1J333J CHIP R 33K J 1/16W
R709 RK73HB1J104J CHIP R 100K J 1/16W
R710 RK73HB1J563J CHIP R 56K J 1/16W
R711 RK73HB1J104J CHIP R 100K J 1/16W
R712 RK73HB1J473J CHIP R 47K J 1/16W

R713 RK73HB1J223J CHIP R 22K J 1/16W
R716 RK73HB1J104J CHIP R 100K J 1/16W
R720 RK73HB1J334J CHIP R 330K J 1/16W
R722 RK73HB1J104J CHIP R 100K J 1/16W
R724 RK73HB1J473J CHIP R 47K J 1/16W

R728 RK73HB1J393J CHIP R 39K J 1/16W
R730 RK73HB1J473J CHIP R 47K J 1/16W
R738 RK73HB1J103J CHIP R 10K J 1/16W
R739 RK73HB1J334J CHIP R 330K J 1/16W
R741 RK73HB1J470J CHIP R 47 J 1/16W

R614 RK73HB1J000J CHIP R 0 J 1/16W
R615 RK73HB1J472J CHIP R 4.7K J 1/16W
R616 RK73HB1J474J CHIP R 470K J 1/16W
R617 RK73HB1J000J CHIP R 0 J 1/16W
R620 RK73HB1J103J CHIP R 10K J 1/16W

R621-624 RK73HB1J104J CHIP R 100K J 1/16W
R626 RK73HB1J101J CHIP R 100 J 1/16W
R627,628 RK73HB1J682J CHIP R 6.8K J 1/16W
R629 RK73HB1J104J CHIP R 100K J 1/16W
R631 RK73HB1J104J CHIP R 100K J 1/16W

R632 RK73GB2A000J CHIP R 0 J 1/10W
R634 RK73HB1J101J CHIP R 100 J 1/16W
R635 RK73GB2A000J CHIP R 0 J 1/10W
R636 RK73HB1J474J CHIP R 470K J 1/16W
R637,638 RK73FB2B102J CHIP R 1.0K J 1/8W

R639 RK73HB1J471J CHIP R 470 J 1/16W
R641 RK73GB2A000J CHIP R 0 J 1/10W
R643 RK73GB2A000J CHIP R 0 J 1/10W
R657 RK73HB1J472J CHIP R 4.7K J 1/16W
R658,659 RK73GB2A000J CHIP R 0 J 1/10W

R661 RK73HB1J473J CHIP R 47K J 1/16W
R662 RK73GB2A000J CHIP R 0 J 1/10W
R664 RK73GB2A000J CHIP R 0 J 1/10W
R667 RK73GB2A101J CHIP R 100 J 1/10W
R668 RK73HB1J471J CHIP R 470 J 1/16W

26

R742 RK73HB1J332J CHIP R 3.3K J 1/16W
R743 RK73HB1J471J CHIP R 470 J 1/16W
R745 RK73HB1J104J CHIP R 100K J 1/16W
R746 RK73HB1J103J CHIP R 10K J 1/16W
R748,749 RK73HB1J104J CHIP R 100K J 1/16W

R750 RK73HB1J393J CHIP R 39K J 1/16W
R751 RK73HB1J104J CHIP R 100K J 1/16W
R752 RK73HB1J394J CHIP R 390K J 1/16W
R754 RK73HB1J563J CHIP R 56K J 1/16W
R755 RK73HB1J224J CHIP R 220K J 1/16W

R756 RK73HB1J102J CHIP R 1.0K J 1/16W
R769 RK73HB1J684J CHIP R 680K J 1/16W
R770,771 RK73HB1J473J CHIP R 47K J 1/16W
R772 RK73HB1J153J CHIP R 15K J 1/16W
R773 RK73HB1J000J CHIP R 0 J 1/16W

R775 RK73HB1J562J CHIP R 5.6K J 1/16W
R776,777 RK73HB1J103J CHIP R 10K J 1/16W
R778 RK73HB1J273J CHIP R 27K J 1/16W
R779 RK73HB1J223J CHIP R 22K J 1/16W
R783 RK73HB1J154J CHIP R 150K J 1/16W

R785 RK73HB1J000J CHIP R 0 J 1/16W
R786 RK73HB1J563J CHIP R 56K J 1/16W
R787 RK73HB1J123J CHIP R 12K J 1/16W
R796,797 RK73GB2A000J CHIP R 0 J 1/10W
R800 RK73HB1J104J CHIP R 100K J 1/16W

GE: NX-720(G)
E: NX-720

PARTS LIST

Ref. No.

R801 RK73HB1J102J CHIP R 1.0K J 1/16W E
R801,802 RK73HB1J102J CHIP R 1.0K J 1/16W GE
R803,804 RK73HB1J472J CHIP R 4.7K J 1/16W
R805,806 RK73HB1J102J CHIP R 1.0K J 1/16W
R810 RK73HB1J123J CHIP R 12K J 1/16W

Ad dress

New

Parts No. Description

parts

Desti­nation

NX-720(G)/720

TX-RX UNIT (X57-8230-1X)

Ref. No.

D601 DB2S310 DIODE
D701 DA2S101 DIODE
D702 1SS422 DIODE
D703,704 DA3S101F DIODE
D705,706 EMZ6.8N ZENER DIODE

Ad dress

New

Parts No. Description

parts

Desti­nation

R811 RK73HB1J103J CHIP R 10K J 1/16W
R813 RK73HB1J102J CHIP R 1.0K J 1/16W
R814 RK73HB1J391J CHIP R 390 J 1/16W
R816 RK73HB1J123J CHIP R 12K J 1/16W
R818 RK73HB1J332J CHIP R 3.3K J 1/16W

R819,820 RK73HB1J222J CHIP R 2.2K J 1/16W
R821,822 RK73GB2A000J CHIP R 0 J 1/10W
R823 RK73HB1J123J CHIP R 12K J 1/16W
R824 RK73HB1J332J CHIP R 3.3K J 1/16W
R825 RK73HB1J000J CHIP R 0 J 1/16W

R826 RK73HB1J103J CHIP R 10K J 1/16W
R827 RK73HB1J823J CHIP R 82K J 1/16W
R831,832 RK73HB1J683J CHIP R 68K J 1/16W
R833 RK73HB1J101J CHIP R 100 J 1/16W
R834 RK73HB1J102J CHIP R 1.0K J 1/16W

R835 RK73HB1J100J CHIP R 10 J 1/16W GE
R837 RK73HB1J562J CHIP R 5.6K J 1/16W
R838 RK73HB1J332J CHIP R 3.3K J 1/16W
R839 RK73EB2E100J CHIP R 10 J 1/4W GE
R842-844 RK73HB1J000J CHIP R 0 J 1/16W GE

R845 RK73HB1J101J CHIP R 100 J 1/16W
R846,847 RK73HB1J223J CHIP R 22K J 1/16W

D2 DZ2J091(M) ZENER DIODE
D4 ,5 1SV325F VARIABLE CAPACITANCE DIODE
D6 1SV305F VARIABLE CAPACITANCE DIODE
D7 -12 1SV282-F VARIABLE CAPACITANCE DIODE
D13 1SV305F VARIABLE CAPACITANCE DIODE

D14 DA2S101 DIODE
D15 1SV278F VARIABLE CAPACITANCE DIODE
D16 ,17 RKS151KJ DIODE
D101 DZ2J056(M) ZENER DIODE
D102 DA3S101F DIODE

D103 RKS151KJ DIODE
D104,105 HSB88AS-E DIODE
D106 DZ2J056(M) ZENER DIODE
D107 RKP351KW-1P2 DIODE
D108,109 RB520SM-30 DIODE

D110,111 L407CDB DIODE
D112-114 RN142S DIODE
D202,203 1SV283F VARIABLE CAPACITANCE DIODE
D204-207 1SV325F VARIABLE CAPACITANCE DIODE
D401 DZ2J180(M) ZENER DIODE

D403 RB520SM-30 DIODE
D404 DA2S101 DIODE
D405 DB2S310 DIODE
D406 DB22306 DIODE
D407 RB520SM-30 DIODE

D408,409 DB2S310 DIODE
D410 22ZR-10D SURGE ABSORBER
D411 DSA3A1 DIODE
D502 DB2S310 DIODE
D504 DB2S310 DIODE

D505-510 MC2850 DIODE
D511-513 DB2S310 DIODE

D801,802 RN142S DIODE GE
IC1 TA7808F-NQ ANALOGUE IC
IC2 SKY72310-362 MOS-IC
IC3 BD7542FVM MOS-IC
IC102 2B RA60H1317M1A IC(POWER MODULE)

IC103 NJM12904RB1 MOS-IC
IC201 BD7542FVM MOS-IC
IC301 TC7SH08FU-F MOS-IC
IC303 TK10931VTL-G ANALOGUE IC
IC304 BU7445HFV MOS-IC

IC401 XC6209B332M-G MOS-IC
IC402 XC6118C23CMR MOS-IC
IC404 XC6209B502P-G MOS-IC
IC405 LT1616ES6-PBF ANALOGUE IC
IC406 XC6209B332M-G MOS-IC

IC407 NJM2878F4-33 BI-POLAR IC
IC408 XC6205B152P-G MOS-IC
IC409 NJM2878F4-33 BI-POLAR IC
IC501 Note1(BGA) ROM IC
IC502 Note1(BGA) DSP IC

IC503 Note1(BGA) SRAM IC
IC504 BD5329FVE MOS-IC
IC506 SM5023CNDH-G MOS-IC
IC507 Note1(BGA) MOS-IC
IC508 TC7SH08FU-F MOS-IC

IC509 TC7WH126FU-F MOS-IC
IC511 TC74VHCT244AFK MOS-IC
IC512 TC7WBD125AFK MOS-IC
IC513 TC7WT126FU-F MOS-IC
IC514 TC7WH126FU-F MOS-IC

IC515 PCA9535BS MOS-IC
IC516 ADM202EARNZ MOS-IC
IC701 BU7462NUX MOS-IC
IC702 BU7242NUX MOS-IC
IC703 BU7462NUX MOS-IC

IC705 BU7242NUX MOS-IC
IC711 BU7462NUX MOS-IC
IC712 R2A20178NP DAC IC
IC713 TC7W53FK(F) MOS-IC
IC714 2A LA4600 BI-POLAR IC

IC716 TC7WT126FU-F MOS-IC
IC801 TC7WH126FU-F MOS-IC GE
Q1 LTC014EEBFS8 TRANSISTOR
Q2 2SJ648-A FET
Q4 2SC5383-T111 TRANSISTOR

Q5 2SC5108(Y)F TRANSISTOR
Q6 ,7 MCH3914(7)-H FET
Q8 EM6M1 FET
Q9 SSM3J15FS FET
Q10 ,11 2SC5108(Y)F TRANSISTOR

Q102 2SC3357-A TRANSISTOR
Q105 FK330301 FET
Q106 EMD5 TRANSISTOR
Q201 3SK318 FET

GE: NX-720(G)
E: NX-720

If a part reference number is listed in a shaded box, that part does not come with the PCB.
Note 1: This part cannot be replaced. Therefore, this part is not supplied as a service part.

27