Kenwood NX-300, NX-300K, NX-300G, NX-300K3, NX-300K4 Service Manual

UHF DIGITAL TRANSCEIVER

NX-300

SERVICE MANUAL

REVISED

NX-300 K3,K4 NX-300 K,K2

Helical Antenna

Knob (Selector)
(K29-9408-13)
Knob (Volume)
(K29-9407-03)

Badge
(B43-1606-04)

Knob (PTT)
(K29-9405-03)

Packing (18 key)
(G53-1766-11)

Plastic cabinet assy
(18 key)
(A02-4003-23)

MI

C

1

4

GH

I

7

PQRS

(KRA-23: option)

DEF

3

ABC

2

MNO

6

JK

L

5

Z

WXY

9

TUV

8

#

0

MI

C

© 2008-9 PRINTED IN JA PAN
B51-8811-10 (N) 426

Knob (Selector)
(K29-9408-13)
Knob (Volume)
(K29-9407-03)

Badge
(B43-1606-04)

Knob (PTT)
(K29-9405-03)

Packing (6 key)
(G53-1765-11)

Plastic cabinet assy
(6 key)
(A02-4002-23)

Does not come with antenna. Antenna is available
as an option.

CONTENTS

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

SYSTEM SET-UP ....................................................... 3

REALIGNMENT ......................................................... 3

DISASSEMBLY FOR REPAIR .................................... 6

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

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

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

EXPLODED VIEW .................................................... 31

PACKING .................................................................. 32

TROUBLE SHOOTING ............................................ 33

ADJUSTMENT ........................................................ 36

TERMINAL FUNCTION ........................................... 58

PC BOARD

CONTROL UNIT (X53-4260-XX) ........................ 66

TX-RX UNIT (X57-7370-XX) .............................. 70

INTERCONNECTION DIAGRAM ............................ 74

SCHEMATIC DIAGRAM .......................................... 76

BLOCK DIAGRAM .................................................. 90

LEVEL DIAGRAM ................................................... 94

OPTIONAL ACCESSORIES

KNB-47L (Li-ion Battery Pack) .......................... 95

KNB-48L (Li-ion Battery Pack) .......................... 95

SPECIFICATIONS ................................. BACK COVER

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

This product uses Lead Free solder.

NX-300

Document Copyrights

Copyright 2008 by Kenwood Corporation. All rights re-

served.

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 Kenwood.

Disclaimer

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

GENERAL

Firmware Copyrights

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

NXDN Transceivers:

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

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced techni­cians familiar with similar types of commercial grade com­munications equipment. It contains all required service
information 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 issued 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 re­quired component for proper identifi cation.

PERSONAL SAFETY

The following precautions are recommended for personal

safety:

• DO NOT transmit until all RF connectors are verifi ed se­cure and any open connectors are properly terminated.

• SHUT OFF and DO NOT operate this equipment near
electrical blasting caps or in an explosive atmosphere.

• This equipment should be serviced by a qualifi ed techni­cian only.

SERVICE

This transceiver is designed for easy servicing. Refer to

the schematic diagrams, printed circuit board views, and
alignment procedures contained within.

Service Manual List

Title Parts number Remarks Market code Control unit number TX-RX unit number

NX-300 B51-8811-00 First edition K,K3

NX-300 B51-8811-10

Note: Refer to page 10 for compatibility information of the Control unit and TX-RX unit.

Revised

This service manual

K,K2,K3,K4

X53-4260-XX

(J79-0131-19)

X53-4260-XX

(J79-0131-29)

X57-7370-10

(J79-0128-19)

X57-7370-XX

(J79-0128-39)

2

SYSTEM SET-UP

NX-300

Merchandise received

License and frequency allocated by FCC

Choose the type of transceiver

Transceiver programming

Are you using the optional antenna?

NO

Are you using the speaker microphone?

NO

Are you using the voice guide & storage unit?

NO

Delivery

Frequency range (MHz) RF power Type

TX/RX 450~520 5W NX-300 K No

TX/RX 400~470 5W NX-300 K2

TX/RX 450~520 5W NX-300 K3

TX/RX 400~470 5W NX-300 K4

A personal computer (IBM PC or compatible), programming interface
(KPG-36/36A), USB adapter (KCT-53U), and programming software (KPG-111D)
are required for programming.
(The frequency, and signaling data are programmed for the transceiver.)

YES

YES

YES

KRA-23 or KRA-27

Optional antenna

(Option)

KMC-25

Speaker microphone

or

KMC-38GPS

GPS speaker microphone

(Option)

VGS-1

(Option)

DTMF keypad

No

Yes

Yes

1. Modes

User mode

Panel test mode

PC mode

Firmware
programming mode

Clone mode

Firmware version information

REALIGNMENT

Panel tuning mode

Data programming mode

PC test mode

PC tuning mode

Mode

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

Firmware program­ming mode

Clone mode

Firmware version
information

Used 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.
See pages 45 to 57.

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.

Function

3

NX-300

REALIGNMENT

2. How to Enter Each Mode

Mode Operation

User mode Power ON

Panel test mode [

PC mode Received commands from PC

Panel tuning mode Press the [

Firmware programming
mode

Clone mode [

Firmware version
information

] + Power ON

] key, in Panel test mode

[

] + Power ON

] + Power ON

[Side1] + Power ON

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 by using a personal com­puter, programming interface (KPG-36/36A), USB adapter
(KCT-53U) and programming software (KPG-111D).

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

5-2. Connection procedure

1. Connect the transceiver to the computer using the inter­face cable and USB adapter (When the interface cable is
KPG-36A, the KCT-53U can be used.).

Notes:

• You must install the KCT-53U driver in the computer to
use the USB adapter (KCT-53U).

• When using the USB adapter (KCT-53U) for the fi rst time,
plug the KCT-53U into a USB port on the computer with
the computer power ON.

2. When the POWER switch on, user mode can be entered
immediately. When PC sends command the transceiver
enter PC mode, and “PROGRAM” is displayed on the
LCD.

When data transmitting from transceiver, the red LED is

lights.

When data receiving to transceiver, the green LED is

lights.

Note:

The data stored in the computer must match the “Model

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

5-3. KPG-36/KPG-36A description
(PC programming interface cable: Option)

The KPG-36/36A is required to interface the transceiver

to the computer. It has a circuit in its D-sub connector (KPG­36: 25-pin, KPG-36A: 9-pin) case that converts the RS-232C
logic level to the TTL level.

The KPG-36/36A connects the universal connector of the

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

PC

D-SUB

(25-pin)

KPG-36

Transceiver

KPG-111D

PC

PC

D-SUB
(9-pin)

KPG-36A

Transceiver

Fig. 1

KPG-36 or KPG-36A or
KPG-36A + KCT-53U
Illustration is KPG-36.

MI

C

PC

USB

KCT-53U

KPG-36A

Transceiver

5-4. KCT-53U description (USB adapter: Option)

The KCT-53U is a cable which connects the KPG-36A to

a USB port on a computer.

When using the KCT-53U, install the supplied CD-ROM

(with driver software) in the computer. The KCT-53U driver
runs under Windows 2000 or XP.

5-5. Programming software KPG-111D description

The KPG-111D is the programming software for the

transceiver supplied on a CD-ROM. This software runs un­der MS-Windows 2000, XP or Vista (32-bit) on a PC or com­patible machine.

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.

6. Firmware Programming Mode

6-1. Preface

Flash memory is mounted on the transceiver. This al-

lows 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.)

4

REALIGNMENT

NX-300

6-2. Connection procedure

Connect the transceiver to the personal computer using
the interface cable (KPG-36/36A) and USB adapter (KCT-53U:
when the interface cable is KPG-36A, the KCT-53U can be
used.). (Connection is the same as in the PC Mode.)

6-3. Programming

1. Start up the fi rmware programming software (Fpro.exe

(ver. 4.0 or later)). The Fpro. exe exists in the KPG-111D

installed holder.

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 “PROGRAM 115200” 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 trans-

ceiver 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

7. Clone Mode

Programming data can be transferred from one trans­ceiver to another by connecting them via their external uni­versal connectors. The operation is as follows (the transmit
transceiver is the source and the receive transceiver is a
target).

The following data cannot be cloned.

• Tuning data

• Embedded message with password

• Model name data

• ESN (Electronic Serial Number) data

Notes:

The following data can be cloned.

• Fleet (own)/ID (own) for FleetSync

• Unit ID (own) for NXDN

Key guide on the Read authorization password input screen.

• CONFRM ([

• DELETE ([

password number (Press and hold to delete all password

numbers)

• SELECT ([

word number

] key): The password confi rmation

] key): Delete the least digit from the current

] key): Determine the least digit of the pass-

Note:

This mode cannot be entered if the Firmware Program-

ming mode is set to Disable in the Programming soft­ware.

6-4. Function

1. If you press the [Side2] key while “PROGRAM 115200”
is displayed, the display changes to “PROGRAM 19200”
(The LED blinks green) to indicate that the write speed
is low speed (19200 bps). If you press the [Side2] key
again while “PROGRAM 19200” is displayed, the dis­play changes to “PROGRAM 38400” (The LED lights
red and orange alternatively). If you press the [Side2]
key again while “PROGRAM 38400” is displayed, the
display changes to “PROGRAM 57600” (The LED blinks
orange). If you press the [Side2] key again while “PRO­GRAM 57600” is displayed, the display returns to “PRO­GRAM 115200” (The LED lights orange).

2. If you press the [Side1] key while “PROGRAM 115200”
is displayed, the checksum is calculated, and a result is
displayed. If you press the [Side1] key again while the
checksum is displayed, “PROGRAM 115200” is redis­played.

Note:

Normally, write in the high-speed mode.

1. Press and hold the [
power ON. If the Read authorization password is set to
the transceiver, the transceiver displays “CLONE LOCK”.
If the password is not set, the transceiver displays
“CLONE MODE”.

2. When you enter the correct password, and “CLONE
MODE” is displayed, the transceiver can be used as the
cloning source. The following describes how to enter
the password.

3.

• How to enter the password using the keypad (K3, K4

models only);

If one of keys 0 to 9 is pressed while the “CLONE

LOCK” is displayed, the pressed number is displayed on
the LCD.

Each press of the key shifts the display in order to the

left.

When you enter the password and press the [

key, “CLONE MODE” is displayed if the entered pass­word is correct. If the password is incorrect, “CLONE
LOCK” is redisplayed.

• How to enter the password using the [

keys (K, K2, K3, K4 models);

If the [

displayed, the Read authorization password input screen
is displayed.

If the [

authorization password input screen is displayed, the
number (0 to 9) blinks on the LCD. When you press the
[

] key, the currently selected number is determined.

] / [ ] key is pressed while “CLONE LOCK” is

] key or [ ] key is pressed while the Read

] key while turning the transceiver

] or [ ]

] and [ ]

5

NX-300

REALIGNMENT

If you press the [ ] key after entering the password in
this procedure, “CLONE MODE” is displayed if the en­tered password is correct. If the password is incorrect,
“CLONE LOCK” is redisplayed.

4. Power ON the target transceiver.

5. Connect the cloning cable (part No. E30-3325-05) to the
universal connectors on the source and target.

6. Press the [

] key on the source while the source displays
“CLONE MODE”. The data of the source is sent to the
target. While the target is receiving the data, “PRO­GRAM” is displayed. When cloning of data is complet­ed, the source displays “END”, and the target automati­cally operates in the User mode. The target can then be
operated by the same program as the source.

7. The other target can be continuously cloned. When the
[

] key on the source is pressed while the source dis­plays “END”, the source displays “CLONE MODE”.
Carry out the operation in step 4 to 6.

Notes:

• Cannot be cloned if the password (overwrite password)
is programmed to the target.

• “Model Name” must be same to clone the transceiver.

Cloning cable
(E30-3325-05)

MI

C

1

4

2

MI

C

1

4

2

Fig. 2

8. Firmware Version Information

Press and hold the [Side1] key while turning the trans­ceiver power ON and then keep pressing and holding the
[Side1] key, the fi rmware version information appears on the
LCD.

DISASSEMBLY FOR REPAIR

1. Precautions for Waterproof

• Do not remove the black sheet from the reverse side of
the transceiver (refer to the illustration right). Removal
of this sheet decreases the waterproof effi ciency of the
transceiver and may cause malfunctions if water seeps
into the transceiver.

• The orange packing material on the reverse side of the
transceiver is important with respect to the waterproof
efficiency of the transceiver. Do not place stickers or
other materials on or around the packing material shown
in the fi gure, or on the reverse side of the battery pack.
Doing so will impair the waterproof efficiency of the
transceiver and may cause it to break down. Additionally,
in order to prevent damage to the packing material, do
not allow it to come in contact with foreign materials.

6

DISASSEMBLY FOR REPAIR

2. Precautions for Disassembly

Removing the TX-RX unit from the chassis

■

1. Remove the cord ASSY from the connector of the TX-RX
unit (CN900) q.

2. Remove the PTT FPC from the connector of the TX-RX
unit (CN901) w.

3. Remove the 14 screws e.

4. Anchor the screw hole of the TX-RX unit using the tip of
a pair of tweezers as shown in the fi gure. Then, lift the
TX-RX unit to remove it from the chassis r.

Cord ASSY

CN900

CN901

PTT FPC

@

:

NX-300

@

;

3. Precautions for Reassembly

Mounting the chassis onto the case

■

1. Place the key top on the chassis. Then, fi t the chassis
tightly into the groove of the key top q.

Note:
Confi rm that the entire groove of the key top fi ts to the

chassis tightly.

:

.

.

.

.

Removing the TOP packing (G53-1762-02)

■

1. Pull the TOP packing to the left to remove the packing
that is fi t into the left groove of the chassis q.

2. Pull the TOP packing to the right to remove the packing
that is fi t into the right groove of the chassis w.

3. Turn back the TOP packing as shown in the fi gure e.

4. Remove the TOP packing r.

.

.

.

.

;

2. Mount the chassis onto the case w.
Note:
After mounting the chassis onto the case, if the 18-key

part on the key top or the Auxiliary (Orange) key part of
the VOL/CH packing gets stuck inside the case as shown
in the fi gure, return it to the normal position using a soft
tipped item (e.g., fi nger) e.

Prying it with a pointed metal tool such as forceps, may

damage the key top or packing.

18-key part

@

Auxiliary
(Orange) key

:

.

7

NX-300

DISASSEMBLY FOR REPAIR

Removing the lithium cell (W09-0971-05)

■

Insert a non-conductive screwdriver to groove of one

side of the socket (CN401) and pry the lithium cell up
from the socket.

Installing the lithium cell (W09-0971-05)

■

Insert a lithium cell into one side of the socket (CN401).
Push the lithium cell to insert the lithium cell into the

socket.

Inserting the Volume and Channel switch into

■

the chassis

Insert the volume and channel switch into the chassis

with the VOL/CH FPC formed as shown in the fi gure.

VOL/CH FPC

Forming the VOL/CH FPC, Cord ASSY and Uni-

■

versal connector FPC

Form the VOL/CH FPC, Cord ASSY and Universal con-

nector FPC as shown in the fi gure.

VOL/CH FPC

Affi xing the keyboard ASSY (S79-0472-05)

■

Affi x the keyboard ASSY to the Control unit as shown in

the fi gure.

After affixing the keyboard ASSY to the Control unit,

confi rm that the three positioning holes of the keyboard

ASSY and the Control unit are not misaligned.
Note:
If the holder (Option board) is removed from the Control

unit, it becomes easy to confirm the three positioning

holes.

Keyboard
ASSY

Positioning holes

Control unit

Universal
Connector FPC

Cord ASSY

Note:
Fold indications are printed on the Cord ASSY and Uni-

versal Connector FPC.
“––––” line shows creased line on the top.
“- - - -” line shows creased line on the bottom.

CONTTX-RX

J87-0005

Cord ASSY

J87-0007

Universal Connector FPC

8

DISASSEMBLY FOR REPAIR

NX-300

Changing the channel selector from 16-channel

■

operation to free

1. Remove the channel selector knob.

2. Remove the circular nut.

3. Remove the mechanical stopper.

4. Reassemble the circular nut and channel selector knob
that were removed in steps 1 and 2, in their original posi­tions.

Channel selector knob
(K29-9408-13)

Circular nut
(N14-0844-04)

Main Parts Assembled Sheet/ Cushion

Part Name Part Number Part Name Part Number Remark

Plastic Cabinet (6-key) A02-4002-23

Plastic Cabinet (18-key) A02-4003-23

LCD ASSY B38-0923-05 Adhesive Sheet (LCD) J99-0714-04

Cord ASSY (50-pin FPC) X42-3340-10 Cushion (50-pin FPC) G13-2258-04

Speaker T07-0755-15

Switch Unit (6-key FPC) X41-3720-10

Switch Unit (PTT FPC) X41-3710-10

Chassis A10-4111-11

Terminal Block E72-0425-03

Mechanical stopper
(D32-0446-14)

Sticker B42-7296-04 “NXDN” is printed.

Badge B43-1606-04 “KENWOOD” is printed.

Fibrous Sheet (SP) G10-1373-04

Rubber Cushion (SP) G11-4272-14

Sheet (SP) G11-4458-14

Adhesive Sheet
(6-key FPC)

Adhesive Sheet
(6-key FPC)

Sheet (PTT) G11-4428-04

Adhesive Sheet
(PTT FPC)

Relay Hardware
(VCO-Chassis)

Sheet (Air) G11-4331-04

Rubber Sheet (FET) G11-4429-04 Used for stabilizing the radiation performance of the FET.

Sheet (Air) G11-4440-04 This sheet is a protect cover of the sheet (G11-4331-04).

Cushion (ANT) G13-2220-04 Used for fi xing the Terminal ASSY.

Adhesive Sheet
(Terminal Block)

J99-0390-04

J99-0712-14

J99-0711-04 Used for fi xing the Switch Unit (PTT FPC) on the Chassis.

E29-1221-14 Used for stabilizing the shield performance of the VCO.

J99-0725-04

Assembly Information (Sheet/Cushion)

■

When “Main Parts” is changed (ordered), “Assembled

Sheet / Cushion” should also be changed (ordered) to­gether.

The Sticker and Sheet etc are non-reusable parts. It re-

quires the new one to get the radio’s performance after
repairs.

For example, when “Plastic Cabinet (A02-4002-23 (6-

key)/A02-4003-23 (18-key))” is changed, “Sticker (B42­7296-04)”, “Badge (B43-1606-04)” and “Fibrous Sheet
(G10-1373-04)” should be ordered and changed together
because Sticker (B42-7296-04), Badge (B43-1606-04) and
Fibrous Sheet (G10-1373-04) are non-reusable.

Used for fi xing the LCD ASSY on the Illumination Guide
(LCD).
Also used for fi xing the Illumination Guide (LCD) on the
Control Unit.

Used for stabilizing the waterproof performance.
“•” (a hole) on the Sheet (SP) shows the upper side (6-key
FPC side).

Used for fi xing the Switch Unit (6-key FPC) from the back
side of the Holder (FG-SP) before soldering.

Used for fi xing the Switch Unit (6-key FPC) on the Holder
(FG-SP).

Used for fi xing the Push Knob (PTT) on the Switch Unit (PTT
FPC) and stabilizing the waterproof performance.

This sheet is put on the leak check hole.
This sheet lets air through, but does not let water through.

Used for fi xing the Terminal Block and the Packing (Terminal
Block).

9

NX-300

DISASSEMBLY FOR REPAIR

4. Compatibility Information for the Control unit and TX-RX unit

Compatibility information

■

There are some important notices when you replace the Control and TX-RX units.

1. Firmware
“BB9E” or later fi rmware versions must be applied to that radio.

2. PCB compatibility chart

Firmware and Control Unit

“30AC” or earlier version

X53-4260-10/-11/-12/-13 (Old)

(J79-0131-19)

Available Available

TX-RX Unit

Compatibility Chart

X57-7370-10 (Old)

(J79-0128-19/J79-0128-29)

X57-7370-10/-11(New)

(J79-0128-39)

(Compatible with “BB9E” or later fi rmware)

NOT available without circuit modifi cations

Without circuit modifi cations, the transmit frequency
will be unstable.
Please refer to the “Note”.
“BB9E” or later fi rmware is also required to perform
radio specifi cations adequately.

“BB9E” or later version

X53-4260-10/-11/-12/-13 (New)

(J79-0131-29)

Available

3. Readjustment
It is necessary to readjust all the adjustment items.

Note:

New TX-RX unit (X57-7370-10/X57-7370-11) circuit modifi cations for using the Old Control unit

The steps below are required to use the Old Control unit and New TX-RX unit combination.

1) Remove R931 (RK73GB2A000J: 0Ω).

2) Place the chip jumper RK73GB2A000J (removed in step 1) on the R930 land pattern.

R930 (Place the chip jumper)

R930

R931

R931 (Remove the chip jumper)

New TX-RX unit
(X57-7370-10/X57-7370-11) (A/2)
Foil side

10

CIRCUIT DESCRIPTION

NX-300

1. Overview

The NX-300 is a UHF portable transceiver designed to

operate in the frequency range of 450 to 520MHz (K,K3) or
400 to 470MHz (K2,K4). The unit consists of receiver, trans­mitter, phase-locked loop (PLL) frequency synthesizer, base
band parts, power supply, and control circuits.

ANT

TX/RX: 450~520MHz (K,K3)
TX/RX: 400~470MHz (K2,K4)

ANT

SW

PA

AMPTXAMP

RF

AMP

391.95~

461.95MHz (K,K3)

341.95~

411.95MHz (K2,K4)

1st MIX

450~520MHz (K,K3)
400~470MHz (K2,K4)

MCF

58.05MHz

19.2MHz

VC

TCXO

Fig. 1 Frequency confi guration

3. Receiver System

3-1. RF Circuit

An incoming RF signal from the antenna terminal is

passed through the antenna switch (D606, D607, D709,
D711) and then the bandpass fi lter (L721, L722). 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 (IC703). The signal is amplifi ed
by an RF amplifi er (Q705), and passed through the bandpass
fi lter (L713, L714, L715). The resulting signal is applied to
the fi rst mixer (Q703), where it is mixed with the fi rst local
oscillator signal output from the frequency synthesizer to
produce the fi rst IF (58.05MHz).

ANT

L612~L614

LPF

L721,L722

ANT

SW

D606,D607
D709,D711

IC704 IC707

IC108

ASIC

IC102

DSP

BPF

AMT

RF AMP

Q705

L713~L715

1st PLL OSC (PLL)

IC713

(2/2)

BPF

IC703

VOL

x3

1st MIX

Q703

IC408

2. Frequency Confi guration

The receiver is a double-conversion superheterodyne
using the first intermediate frequency (IF) of 58.05MHz
and the 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 58.05MHz. This is then mixed with
the 57.6MHz 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.

CF

450kHz

SP

MIX

IF AMP

57.6MHz

PLL

VCO

3-2. IF Circuit

The fi rst IF signal is passed through a four-pole mono­lithic crystal fi lter (XF700) to reject adjacent channel signals.
The fi ltered fi rst IF signal is amplifi ed by the fi rst IF amplifi er
(Q701) and then applied to the lF system IC (IC701). 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

57.6MHz of second local oscillator output and produces the
second IF signal of 450kHz.

The second IF signal is passed through the ceramic fi lter
(CF700) to reject the adjacent channel signal. The filtered
second IF signal is amplifi ed by the AGC amplifi er.

The signal from the AGC amplifi er is input to the ASIC
(IC108) through the ceramic fi lter (CF701) and operational
amplifi er (IC700).

MCF

BPF

TCXO

19.2MHz

IC409

SWSW

X500

VC

IF AMP

Q701

2nd OSC

x3

Q700

IC413

IC412

XF700

AF

AMP

Base band circuit

MIC

AMP

IC701

MIX, AGC

BPF

CF700

MIC

INT. SP

EXT. SP

CF701

BPF

IC700

INAMT

EXAMT

Fig. 2 RF and IF circuit

11

NX-300

CIRCUIT DESCRIPTION

3-3. Audio Amplifi er Circuit

Audio processing (high-pass filter, low-pass filter, de­emphasized and so on) at FM mode and decoding at NXDN
mode are processed by DSP. The audio signal from IC108
and IC102 goes through the amplifier (IC704). The signal
then goes through a mute switch (IC707), amplifi er (IC713),
electronic volume control (IC703), and AF amplifi er (IC408).

While busy, AMT becomes Low to turn IC707 on, and
the signal is fed to the AF switch. While INAMT is High, the
AF switch (IC409) selects the internal speaker, and the au­dio signal is fed to the internal audio power amplifi er (IC413),
and output to the internal speaker. While EXAMT is High,
the AF switch (IC409) selects the external speaker, and
the audio signal is fed to the external audio power ampli­fi er (IC412), and output to the external speaker. The power
supply for IC413 and IC412 is turned on while INAMT or EX­AMT is High.

The speaker is switched by the logic of the speaker
switching terminal SSW on the universal connector. When
the SP-MIC is not attached, SSW becomes High. IC108
detects the logic of SSW and activates either INAMT or EX­AMT.

B

INAMT

EXAMT

AF signal

from IC408

Q406

Q405

IC409

VDD

IC413

SHUT DOWN

VDD

IC412

SHUT DOWN

INT. SP

EXT. SP

Fig. 3 Audio amplifi er circuit

3-4. Squelch Circuit

It amplifies the demodulated noise signal from IC108
after filtering through the BPF circuit. Then, the amplified
signal is converted to a DC signal by the detection circuit.
The converted signal is fed back to IC108.

DET

IC108

ASQAPC

ASQDET

IC702

(1/2)

LPF

IC711

(2/2)

HPF

Q704

AMP

D705

RECT

IC711

(1/2)

AMP

Fig. 4 Squelch circuit

4. Transmitter System

4-1. Audio Band Circuit

The signal from the internal microphone goes through
the mute switch (Q5). When the SP-MIC is not attached, the
microphone switching terminal (MSW) on the universal con­nector becomes High, and the mute switch (Q5) is turned
on. When the SP-MIC is attached, MSW is connected to
GND inside the SP-MIC. For this reason, Q5 is turned off,
the internal microphone is muted, and only the input of the
external microphone is supplied to the microphone ampli­fi er. The signal from the microphone goes through the mute
switch (Q707), and is amplifi ed by IC716 (1/2) and limited by
the AGC circuit which is composed of D703, D704, Q705
and Q706.

4-2. Base Band Circuit

The audio signal output from the base band circuit is con­verted to digital data with a sampling frequency of 48kHz.
This digital data is sent to the DSP (IC102), and voice signals
of 300Hz or lower and frequencies of 3kHz or higher are cut
off and an audio range of 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 IC108. In Digital mode, the audio
signal is converted to the 4-Level FSK base band signal and
output from IC108. The DTMF and MSK base band signals
are also generated by the DSP and output by IC108.

LPF (IC705) works as a smoothing fi lter. The DAC (IC703)
assigns the base band signal to the VCO and VCTCXO (X500).
At this time, the level output according to the transmit car­rier is fi ne-adjusted according to each modulation method.

12

EXT. MIC

INT. MIC

Q5

SW

MSW

SW

MM

IC716

AMP

D703,D704
Q705,Q706

Q707 IC712

Q4

(1/2)

AGC

IC102

DSP

IC108

ASIC

IC705

(2/2)

LPF

IC705

(1/2)

LPF

SW

SCSW

IC710

(1/2)

AMP

IC706

LPF

Fig. 5 Audio band and Base band circuit

IC710

(2/2)

AMP IC703

IC501

AMP

AMP

IC504

X500

VCTCXO

VCO

CIRCUIT DESCRIPTION

NX-300

4-3. VOX

IC716 (2/2) amplifi es the audio signal captured in the mi­crophone. The signal is then converted into the DC voltage,
rectifi ed by D706. The DC voltage activates the ASIC (IC108),
and the VOX starts.

4-4. Drive and Final Amplifi er

The signal from the T/R switch (D601 is on) is amplifi ed
by the drive amplifi er (Q601,Q602 and Q603) to 25~27dBm.
The output of the drive amplifi er is amplifi ed by the RF pow­er amplifi er (Q606) to 5.0W (1W when the power is low).
The RF power amplifi er is MOS FET. The output of the RF
power amplifi er is then passed through the harmonic fi lter
(LPF) and antenna switch (D606, D607 are on) and applied
to the antenna terminal.

From

T/R SW

(D601)

Q601

Pre-Drive

AMP

+B

REF

VOL

(IC108)

Q602

Drive
AMP

R642

R645

R647

Q603

Pre-Final

AMP

4-5. APC Circuit

The APC circuit always monitors the current flowing
through the RF power amplifi er (Q606) and keeps a constant
current. The voltage drop at R642, R645 and R647 is caused
by the current fl owing through the RF power amplifi er and
this voltage is applied to the differential amplifier (IC600
1/2). IC600 (2/2) compares the output voltage of IC600 (1/2)
with the reference voltage from IC108, and the output of
IC600 (2/2) controls the VGG of Q602, Q603 and Q606 to
make the both voltages the same. The change of power
high/low is carried out by the change of the reference volt­age. Q607, Q608 and Q610 are turned on and Q604 and
Q605 are turned off in transmit and the APC circuit is active.

ANT

D606,D607Q606

Final
AMP

VDD

IC600

(1/2)

VGG

ANT

SW

IC600

(2/2)

LPF

Fig. 6 Drive and fi nal amplifi er and APC circuit

5. PLL Frequency Synthesizer

5-1. VCTCXO (X500)

VCTCXO (X500) generates a reference frequency of

19.2MHz for the PLL frequency synthesizer. This reference
frequency is applied to pin 9 of the PLL IC (IC502) and con­nected to the IF circuit as a 2nd local signal through the
Tripler (Q700). The VCTCXO oscillation frequency is deter­mined by the DC voltage of the VC terminal. The VC voltage
is fi xed to 1.65V by R500 and R501, and supplied to the VC
terminal through IC501. The modulation signal is also fed to
the VC terminal through IC501.

The frequency adjustment is achieved by switching the
ratio of the dividing frequency that is not adjusted by the DC
voltage impressed to the VC. The resolution of the adjusting
frequency is approximately 4Hz.

5-2. VCO

There is a RX VCO and a TX VCO.

The TX VCO (Q509) generates a transmit carrier and the
RX VCO (Q508) generates a 1st local signal. For the VCO
oscillation frequency, the transmit carrier is 450 to 520MHz
(K,K3) or 400 to 470MHz (K2,K4) and the 1st local signal
is 391.95 to 461.95MHz (K,K3) or 341.95 to 411.95MHz
(K2,K4).

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 (IC108). When
the /T_R logic is low, the VCO outputs the transmit carrier
and when it is high, it outputs a 1st local receive signal.

The voltage control terminals, “CV” and “ASSIST”, are
controlled by the PLL IC (IC502) and ASIC (IC108) 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.

13

NX-300

CIRCUIT DESCRIPTION

5-3. PLL IC (IC502)

The PLL IC compares the differences in phases of the
VCO oscillation frequency and the VCTCXO 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 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.

Q508,Q509

X500

19.2MHz

VC

TCXO

SDO1

SCK1

/PCS_RF

IC502 Q512

PLL

IC

Loop
Filter

CV

VCO_MOD

150C

Q503

Ripple

Filter

ASSIST

D506,D507,D510,D511

D514~D517,D519

VCO

Q504

IC504(1/2)

IC503

The desired frequency is set for the PLL IC by the ASIC
(IC108) through the 3-line “SDO1”, “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 (unlock), the “PLD” logic is low.

5-4. Local Switch (D600, D601)

The connection destination of the signal output from the
buffer amplifier (Q600) is changed with the diode switch
(D601) that is controlled by the transmission power supply,
50T, and the diode switch (D600) that is controlled by the
receive power supply, 50R. If the 50T logic is high, it is con­nected to a send-side pre-drive (Q601). If the 50T logic is
low, it is connected to a receive-side mixer (Q703).

BUFF

AMP

Q600

BUFF

AMP

50C

D600,D601

T/R

SW

50T

50R

to 1st Mixer

to TX stage

Fig. 7 PLL block diagram

6. Control Circuit

The control circuit consists of the ASIC (IC108) and its

peripheral circuits. IC108 mainly performs the following;

1) Switching between transmission and reception by 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 squelch on/off by the DC voltage from the
squelch circuit.

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

LPF

6-1. ASIC

The ASIC (IC108) is a 32-bit RISC processor, equipped

with peripheral function and ADC/DAC.

This ASIC operates at 18.432MHz clock and 3.3V /1.5V
DC. It controls the fl ash memory, SRAM, DSP, the receive
circuit, the transmitter circuit, the control circuit, and the dis­play circuit and transfers data to or from an external device.

14

CIRCUIT DESCRIPTION

NX-300

6-2. Memory Circuit

The memory circuit consists of the ASIC (IC108) and the
SRAM(IC103) and fl ash memory (IC101). The fl ash memory
has capacity of 32M-bit that contains the transceiver control
program for the ASIC and stores the data. It also stores the
data for transceiver channels and operating parameter that
are written by the FPU. This program can be easily written
from external devices. The SRAM has capacity of 1M-bit
that contains work area and data area.

Flash memory

■

Note: The fl ash memory stores the data that is written by
the FPU (KPG-111D), tuning data (Deviation, Squelch, etc.)
,and firmware program (User mode, Test mode, Tuning
mode, etc.). This data must be rewritten when replacing the
fl ash memory.

SRAM (Static memory)

■

Note: The SRAM has temporary data area and work area.
When the power supply is off, it is backed up by an internal
secondary lithium battery. Therefore, the saved data is not
lost.

Real-time clock

■

The clock function is based on real-time clock IC (IC106).
When the power supply is off, it is backed up by an internal
secondary lithium battery.

6-3. LCD

The LCD is controlled using the bus lines on the connec­tor (CN1) of the Control unit (X53-426). It corrects the LCD
contrast voltage using IC1.

6-4. Key Detection Circuit

Keys are detected using the key scan circuit in IC108.
The /KEYI* signals that are normally pulled down go high
when any key is pressed.

6-5. Low Battery Warning

The battery voltage is divided using R444 and R445 and
is detected by the ASIC (IC108). When the battery voltage
falls below the voltage set by the Low battery warning ad­justment, the red LED blinks to notify the operator that it is
time to replace the battery. If the battery voltage falls even
more (approx. 5.8V), a beep sounds and transmission stops.

Low battery warning Battery condition

The red LED blinks during
transmission.

The red LED blinks and the
warning tone beeps while the
PTT switch is pressed.

The battery voltage is low but
the transceiver is still usable.

The battery voltage is low and
the transceiver is not usable to
make calls.

6-6. DSP

The DSP circuit consists of a DSP (IC102) and processes
the base band signal. The DSP operates on an external clock
of 18.432MHz (the same as the IC108), 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 audio codec and modula-

tion/demodulation

• CAI processing, such as error correction encoding

• QT/DQT encoding/decoding

• LTR encoding/decoding

• DTMF encoding/decoding

• MSK encoding/decoding

• 2-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

The battery voltage (+B) is provided from the battery
terminal on the TX/RX unit (X57). The battery voltage passes
through the 2.5A fuse (F900), and goes to the RF fi nal am­plifi er, AVR ICs (IC902, IC903), and Control unit (X53-426).

In the control unit, +B is connected to the DC/DC (IC407),
AVR ICs (IC411, IC708, IC416), and voltage detector IC
(IC414). The voltage detector watches the battery voltage.
If the battery voltage is 5.6V or higher, the detector outputs
High. While the output of IC414 is High, IC416 and Q409
provide 3.1V (31BU) to the backup-section.

When the VOL SW is turned on, SB1 becomes high (bat­tery voltage). The DC/DC (IC407) operates if both SB1 and
the output of the detector are high. IC407 outputs 3.8V and
it activates IC404 (33M), IC717 (15M), and IC406 (33A). As a
result, the ASIC and DSP operate.

The SBC signal becomes High after the ASIC operates,
IC708 (5A), Q403 on the Control unit (SB2) and Q901 on the
TX-RX unit (SB3) are turned on. IC901 and IC903 operate by
turning on these AVR ICs and FET switches.

The 5UC signal becomes High when an option is in­stalled on the universal connector. Then IC411 (50U) oper­ates.

When the /SAVE signal becomes High, IC902 (50C)
operates. The output of IC902 is connected to three FET
switches (Q902, Q903, Q905). When the SBC signal be­comes High, IC903 (33C) operates. The FET switches are
controlled by the CPU. Q905 (50T) is turned on in transmit
mode. Q902 (50R) and Q903 (50IF) are turned on in receive
mode.

When the VOL SW is turned off the /PSW signal be­comes Low. After detecting the /PSW signal, the ASIC
changes SBC signal to Low. Then the power supplies ex­cept IC416 (31BU) stop.

15

NX-300

CIRCUIT DESCRIPTION

F900

2.5A
/SAVE

/5TC

5RC

SBC

5UC

SBC

IC902

IC903

AVR IC

Q901

SB3 SW

CN900

CN404

IC411

AVR IC

Q403

SB2 SW

AVR

Q905

50T SW

Q902

50R SW

Q903

50IF SW

IC901

DC/DC

TX-RX unit (X57)

RF Final AMP

+B

APC

50C

VCO

50T

TX circuit

50R

RX circuit

50IF

IF circuit

33C

PLL, VCTCXO

SB3

TX/Busy LED

150C

Assist, Tune

Control unit (X53)

50U

Universal

SB2

BackLight
Key Light

8. Signaling Circuit

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

Each signaling data signal of QT, DQT, LTR, DTMF, 2-tone
and MSK is generated by the DSP circuit, superposed on
a modulation signal and output from IC108. The modula­tion balance of the QT/DQT/LTR signal is adjusted by the
D/A converter (IC703) and the resulting signal is routed to
the modulation input of the VCO and VCXO (X500). Each
deviation of the TX QT, DQT, LTR, DTMF, 2-tone and MSK
tone is adjusted by changing the output level of IC108 and
the resulting signal is routed to the VCO and VCXO. The RX
DTMF tone is routed to the receive audio signal system, and
is output from the speaker.

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

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

9. Compander Circuit

The term “compander” means compressor and expand­er. The compander reduces noise by utilizing a compressor
and an expander. The transceiver contains a DSP (IC102) to
perform this operation. The transceiver compander can be
turned on or off using the FPU.

5A

-10V

31BU

33M

15M

33A

/PSW

/BINT

VOL SW

IC708

AVR IC

IC416

AVR IC

IC407

DC/DC

IC414

Detect

SB1

Q408

AND

D408

OR

SBC

IC403

DC/DC

Q409
31BU

IC404

AVR

IC717

DC/DC

IC406

AVR

Q402

Lvl Conv

Q401

Lvl Conv

D412

OR

Fig. 8 Power supply circuit

Option

LCD Bias

SRAM, RTC

ASIC, DSP I/O,
Flach, LCD DRV

ASIC, DSP core

ASIC Analog,
Audio

IC108

ASIC

16

COMPONENTS DESCRIPTION

NX-300

Control unit (X53-4260-XX)

Ref. No. Part Name Description

IC1 IC LCD contrast

IC101 IC FLASH ROM

IC102 IC DSP

IC103 IC SRAM

IC104 IC 2 input AND gate

IC105 IC Reset

IC106 IC RTC

IC107 IC Buffer

IC108 IC ASIC

IC109 IC 2 input AND gate

IC401,402 IC Bus switch

IC403 IC Voltage doubling inverter

IC404 IC Voltage regulator (33M)

IC406 IC Voltage regulator (33A)

IC407 IC DC/DC converter

IC408 IC AF AMP

IC409 IC AF switch

IC411 IC Voltage regulator (50U)

IC412,413 IC Audio AMP

IC414 IC Reset

IC415 IC 2 input AND gate

IC416 IC Voltage regulator

IC417,418 IC Dual bus buffer

IC701 IC I/O control

IC702 IC APC LPF

IC703 IC D/A converter

IC704 IC RX AF LPF

IC705 IC Modulation LPF

IC706 IC MIC AMP

IC707 IC RX AF switch

IC708 IC Voltage regulator (5A)

IC709 IC Sidetone mute

IC710 IC MOD/MIC summing AMP

IC711 IC SQL BPF/SQL DC AMP

IC712 IC MIC switch

IC713 IC 1.65V REF/RX summing AMP

IC714 IC OPT switch

IC715,716 IC VOX AMP

IC717 IC DC/DC converter (15M)

Q1,2 Transistor LCD backlight switch

Q3 FET LCD backlight switch

Q4 FET MIC mute control

Q5 FET MIC mute switch

Q101,102 Transistor 12key backlight switch

Ref. No. Part Name Description

Q103 FET 12key backlight switch

Q401,402 FET Level converter

Q403 Transistor SB2 switch

Q404 FET SB2 switch control

Q405 FET AF AMP switch

Q406,407 Transistor Voltage regulator (AF AMP)

Q408,409 Transistor DC switch

Q410 FET DC switch

Q411 FET Level converter

Q412 FET DC switch control

Q413~415 Transistor DC switch

Q701 Transistor OPT switch

Q702 FET Tone switch

Q703 FET W/N noise switch

Q704 Transistor SQL noise AMP

Q705,706 Transistor MIC AGC

Q707 FET MIC mute

D1,2 LED 12key backlight

D3,4 LED LCD backlight

D5,6 LED 12key backlight

D7,8 LED LCD backlight

D9,10 LED 12key backlight

D11 Diode LCD backlight switch

D12~16 Diode Reverse current prevention

D17~21 Zener diode Surge absorption

D22,23 Diode Surge absorption

D101 Diode 12key backlight switch

D102 Diode Reverse current prevention

D401~404 Diode 12key control

D405,406 Diode DC/DC converter

D407 Diode Over voltage prevention

D408 Diode DC/DC converter control

D409,410 Diode SP control

D411 Diode RTC BATT control

D412 Diode DC switch control

D413 Diode RTC BATT control

D414,415 Diode Reverse current prevention

D416 Diode 33M control

D417 Diode 33A control

D701 Diode 5A switch

D702 Diode PLD control

D703,704 Diode Detector

D705 Diode Noise detector

D706 Diode VOX detector

D707 Diode VOX

17

NX-300

COMPONENTS DESCRIPTION

TX-RX unit (X57-7370-XX)

Ref. No. Part Name Description

IC404 IC OP AMP (RSSI/VAGC)

IC500 IC Temperature sensor

IC501 IC AF AMP for TCXO MOD

IC502 IC PLL IC

IC503 IC DC AMP for VCO tune

IC504 IC OP AMP (VCO MOD/APC)

IC600 IC Auto power control

IC700 IC Buffer

IC701 IC FM IC

IC702,703 IC DC AMP for BPF

IC900 IC 50T control

IC901 IC DC/DC converter

IC902 IC Voltage regulator (50C)

IC903 IC Voltage regulator (33C)

Q503 Transistor Ripple fi lter

Q504 FET Buffer AMP

Q507 Transistor Ripple fi lter

Q508,509 FET VCO oscillation

Q510,511 FET T/R switch

Q512,600 Transistor Buffer AMP

Q601 Transistor Pre-drive AMP

Q602 FET Drive AMP

Q603 FET Pre-fi nal AMP

Q604 Transistor APC switch

Q605 FET APC switch

Q606 FET RF fi nal AMP

Q607 Transistor APC switch

Q608 FET APC switch

Q610 Transistor APC switch

Q700 Transistor 2nd Local tripler

Q701 Transistor IF AMP

Q703 FET Mixer

Q704 Transistor Ripple fi lter

Ref. No. Part Name Description

Q705 FET RF AMP

Q706 FET RF AGC

Q900 Transistor TX/RX LED switch

Q901 FET SB3 switch

Q902 FET 50R switch

Q903 FET 50IF switch

Q904 FET DC/DC converter switch

Q905 Transistor 50T switch

D501 Diode Ripple fi lter

D505 Diode Bypass diode

D506,507,
D510,511

D514~517

D518 Diode Ripple fi lter

D519

D600,601 Diode Local switch

D604 Zener diode APC switch

D605 Zener diode APC protect

D606,607 Diode Antenna switch

D700 Diode Ripple fi lter

D702~704

D705 Diode RF AGC

D706,708

D709 Diode Antenna switch

D710

D711 Diode Antenna switch

D900 LED TX/RX LED

D901 Diode Reverse protection

D902 Diode 50T control

D902 Diode 50T control

Variable capaci­tance diode

Variable capaci­tance diode

Variable capaci­tance diode

Variable capaci­tance diode

Variable capaci­tance diode

Variable capaci­tance diode

Frequency control

Frequency control

TX modulation

Vari-cap tune

Vari-cap tune

Vari-cap tune

18

PARTS LISTPARTS LIST

NX-300

New Parts.

✽

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.

indicates safety critical components.

New

Ad dress

Parts No. Description

parts

NX-300

1 1B ✽ A02-4002-23 PLASTIC CABINET (6KEY) K,K2
2 1A ✽ A02-4003-23 PLASTIC CABINET (18KEY) K3,K4
3 3A ✽ A10-4111-11 CHASSIS
4 3B A62-1156-02 PANEL (TOP)

6 1B,1D B09-0712-03 CAP ACCESSORY
7 1A B11-1853-24 FILTER (LCD)
8 1A B11-1854-02 ILLUMINATION GUIDE (LCD)
9 3B B11-1855-04 ILLUMINATION GUIDE (TX/BUSY)
10 1A B38-0923-05 LCD ASSY

11 1A B42-7296-04 STICKER
12 1B B43-1606-04 BADGE
13 2D ✽ B62-2014-10 INSTRUCTION MANUAL

15 2B D32-0446-14 STOPPER (16CH)

16 2A E29-1220-04 RELAY HARDWARE (X57 PCB) K2,K4
17 2A E29-1220-04 RELAY HARDWARE (VCO-PCB)
18 3A ✽ E29-1221-14 RELAY HARDWARE (VCO-CHASSIS)
19 3B E58-0532-05 RECTANGULAR RECEPTACLE (SP/MIC)
20 3B E72-0425-03 TERMINAL BLOCK

Desti­nation

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

NX-300 (Y50-6120-XX)

CONTROL UNIT (X53-4260-XX)

Ref. No.

57 2B J99-0390-04 ADHESIVE SHEET (6KEY FPC)
58 3A J99-0711-04 ADHESIVE SHEET (PTT FPC)
59 2B J99-0712-14 ADHESIVE SHEET (6KEY FPC)
60 1A,2A J99-0714-04 ADHESIVE SHEET (LCD)
61 2A J99-0714-04 ADHESIVE SHEET (X57 PCB) K2,K4

62 3B J99-0715-08 ADHESIVE SHEET (UNIVERSAL)
63 3B J99-0725-04 ADHESIVE SHEET (TERMINAL BLOCK)

64 3A K25-2001-03 PUSH KNOB (PTT)
65 1A K29-9405-03 KNOB (PTT)
66 1A K29-9406-03 BUTTON KNOB (SIDE KEY)
67 1B K29-9407-03 KNOB (VOL)
68 1B K29-9408-13 KNOB (CH)

A 1B,1D N08-0564-04 DRESSED SCREW ACCESSORY
B 3B N09-2426-14 HEXAGON HEAD SCREW (BATT-)
C 3A N09-2440-15 SPECIAL SCREW (CASE)
D 2A,2B N09-6549-04 STEPPED SCREW (FG-SP HOLDER)
E 2B,3A N09-6554-05 PAN HEAD SCREW (ANT/OP BOARD)

F 2B N14-0844-04 CIRCULAR NUT (VOL,CH)
G 1C N30-3008-60
H

New

Ad dress

1A,2A,2B

N83-2005-48 PAN HEAD TAPTITE SCREW (PCB)

Parts No. Description

parts

PAN HEAD MACHINE SCREW (BELT CLIP)

Desti­nation

22 3A F07-1931-04 COVER (OP BOARD)
23 2A F10-3106-03 SHIELDING CASE ASSY

24 2A G02-1836-13 EARTH SPRING (SP)
25 1A G10-1373-04 FIBROUS SHEET (SP)
26 2B ✽ G10-1384-14 FIBROUS SHEET (TOP PANEL)
27 2A G11-4272-14 RUBBER CUSHION (SP)
28 3A G11-4331-04 SHEET (AIR)

29 3A G11-4428-04 SHEET (PTT)
30 3A G11-4429-04 RUBBER SHEET (FET)
31 3A G11-4440-04 SHEET (AIR)
32 2A G11-4458-14 SHEET (SP)
33 2A G11-4459-04 SHEET (TX-RX PCB)

34 2A G11-4476-04 SHEET (MIC ELEMENT) K3,K4
35 2A G13-2129-14 CUSHION (TX-RX PCB)
36 2A,3A G13-2220-04 CUSHION (ANT/OP BOARD)
37 2A G13-2249-04 CUSHION (TX-RX PCB)
38 2A G13-2258-04 CUSHION (50PIN FPC)

39 2A G13-2265-04 CUSHION (BATT-)
40 3B G53-1762-02 PACKING (TOP)
41 3B G53-1763-03 PACKING (TERMINAL BLOCK)
42 3A G53-1764-03 PACKING (OP BOARD)
43 1B G53-1765-11 PACKING (6KEY) K,K2

44 1A G53-1766-11 PACKING (18KEY) K3,K4
45 2B G53-1768-04 PACKING (VOL,CH O-RING)
46 1B,1D G53-1769-04 PACKING (CAP)
47 2B G53-1792-04 PACKING (SMA O-RING)

49 2A J19-5505-11 HOLDER (FG-SP)
50 2B J19-5506-03 HOLDER (VOL,CH)
51 2A J19-5507-02 HOLDER (OP BOARD)
52 2B J21-8579-04
53 1C J29-0730-05 BELT CLIP ACCESSORY

MOUNTING HARDWARE (FG-SP HOLDER)

70 1A S79-0472-05 KEYBOARD ASSY (12KEY) K3,K4

72 2A T07-0755-15 SPEAKER
73 2A T91-0575-05 MIC ELEMENT

75 2A W09-0971-05 LITHIUM CELL

77 3A X41-3710-10 SWITCH UNIT (PTT FPC)
78 2B X41-3720-10 SWITCH UNIT (6KEY FPC)
79 2A X42-3340-10 CORD ASSY (50PIN FPC)
80 2B X60-3860-10 TERMINAL ASSY (SMA)

CONTROL UNIT (X53-4260-XX) -10: K,K2 -11: K3,K4

D1-10 B30-2215-05 LED K3,K4
D3,4 B30-2215-05 LED K,K2
D7,8 B30-2215-05 LED K,K2

C1 CK73HB1A104K CHIP C 0.10UF K
C2-6 CK73GB1E105K CHIP C 1.0UF K
C7,8 CK73HB1A104K CHIP C 0.10UF K
C10 CK73HB1A104K CHIP C 0.10UF K
C11 CK73HB0J105K CHIP C 1.0UF K

C12-15 CK73HB1H471K CHIP C 470PF K
C16,17 CC73HCH1H101J CHIP C 100PF J
C23 CK73HB1H102K CHIP C 1000PF K
C24 CC73HCH1H470J CHIP C 47PF J
C25-27 CK73HB1H102K CHIP C 1000PF K

C28-34 CC73HCH1H101J CHIP C 100PF J
C35 CK73HB1H102K CHIP C 1000PF K
C36 CK73HB1E682K CHIP C 6800PF K
C37 CK73HB1H102K CHIP C 1000PF K
C38 CC73HCH1H101J CHIP C 100PF J

54 2B J30-1296-04 SPACER (VOL)
55 2B J87-0006-05 FPC (LEAD FREE/VOL,CH)
56 3B J87-0007-05 FPC (LEAD FREE/UNIVERSAL)

C40 CC73HCH1H221J CHIP C 220PF J
C41 CC73HCH1H101J CHIP C 100PF J
C101-104 CK73HB1A104K CHIP C 0.10UF K

19

NX-300

PARTS LIST

CONTROL UNIT (X53-4260-XX)

Ad dress

New

Parts No. Description

parts

Ref. No.

C105 CK73HB0J105K CHIP C 1.0UF K
C106 CK73HB1E103K CHIP C 0.010UF K
C107 CK73HB1A104K CHIP C 0.10UF K K,K2
C107,108 CK73HB1A104K CHIP C 0.10UF K K3,K4
C109,110 CK73HB1H102K CHIP C 1000PF K

Desti­nation

Ref. No.

C447 CK73HB1H102K CHIP C 1000PF K
C448-450 CK73HB0J105K CHIP C 1.0UF K
C452,453 CK73HB1E103K CHIP C 0.010UF K
C454 CK73GB1E105K CHIP C 1.0UF K
C455-457 CK73HB1H471K CHIP C 470PF K

Ad dress

New

Parts No. Description

parts

Desti­nation

C111-113 CK73HB1A104K CHIP C 0.10UF K
C114 CK73HB0J105K CHIP C 1.0UF K K3,K4
C115 CK73HB1H471K CHIP C 470PF K K3,K4
C116,117 CK73HB1A104K CHIP C 0.10UF K
C118,119 CK73HB0J105K CHIP C 1.0UF K

C120,121 CK73HB1A104K CHIP C 0.10UF K
C122-124 CK73HB1E103K CHIP C 0.010UF K
C130 CK73HB1E103K CHIP C 0.010UF K
C131 CK73HB1A104K CHIP C 0.10UF K
C133 CS77CP0J100M CHIP TNTL 10UF 6.3WV

C134 CK73HB1E103K CHIP C 0.010UF K
C135 CK73HB1H102K CHIP C 1000PF K
C136 CK73HB1E103K CHIP C 0.010UF K
C137 CK73GB1E105K CHIP C 1.0UF K
C138-140 CK73HB1A104K CHIP C 0.10UF K

C141 CC73HCH1H101J CHIP C 100PF J
C142 CS77CP0J100M CHIP TNTL 10UF 6.3WV
C143 CK73HB1E103K CHIP C 0.010UF K
C144 CK73GB1E105K CHIP C 1.0UF K
C145-148 CK73HB1A104K CHIP C 0.10UF K

C149 CK73HB1E103K CHIP C 0.010UF K
C150 CK73GB1E105K CHIP C 1.0UF K
C151-155 CK73HB1A104K CHIP C 0.10UF K
C156,157 CK73HB1H102K CHIP C 1000PF K
C158 CK73HB1E103K CHIP C 0.010UF K

C159 CK73HB1A104K CHIP C 0.10UF K
C160,161 CK73HB1E682K CHIP C 6800PF K
C401,402 CK73HB1A104K CHIP C 0.10UF K
C403-405 CS77AP1C2R2M CHIP TNTL 2.2UF 16WV
C406 CK73HB0J105K CHIP C 1.0UF K

C459 CK73HB1H471K CHIP C 470PF K
C460 CK73HB1E682K CHIP C 6800PF K
C461-463 CK73HB1H471K CHIP C 470PF K
C464 CK73HB1E103K CHIP C 0.010UF K
C465 CK73HB1H102K CHIP C 1000PF K

C466 CK73HB1E682K CHIP C 6800PF K
C467,468 CK73HB1A104K CHIP C 0.10UF K
C469,470 CK73HB1H102K CHIP C 1000PF K
C480 CK73HB1E103K CHIP C 0.010UF K
C701 CK73HB1A104K CHIP C 0.10UF K

C703 CK73GB0J475K CHIP C 4.7UF K
C704,705 CK73HB1A104K CHIP C 0.10UF K
C706 CC73HCH1H680J CHIP C 68PF J
C707 CC73HCH1H270J CHIP C 27PF J
C708 CK73HB1A104K CHIP C 0.10UF K

C709 CK73HB0J105K CHIP C 1.0UF K
C710 CK73HB1E103K CHIP C 0.010UF K
C711 CK73HB1A104K CHIP C 0.10UF K
C712 CK73HB1E103K CHIP C 0.010UF K
C713 CK73HB1H332K CHIP C 3300PF K

C714 CK73HB1H122K CHIP C 1200PF K
C715 CK73HB1A104K CHIP C 0.10UF K
C716 CK73HB1H681K CHIP C 680PF K
C717 CK73HB1E103K CHIP C 0.010UF K
C718 CK73HB1H152K CHIP C 1500PF K

C719 CK73HB1A104K CHIP C 0.10UF K
C720 CK73HB1E103K CHIP C 0.010UF K
C721 CK73HB1A104K CHIP C 0.10UF K
C722 CK73HB1E103K CHIP C 0.010UF K
C723 CK73HB1A104K CHIP C 0.10UF K

C407,408 CK73HB1H102K CHIP C 1000PF K
C409 CK73HB0J105K CHIP C 1.0UF K
C411,412 CK73HB0J105K CHIP C 1.0UF K
C414 CK73HB0J105K CHIP C 1.0UF K
C415 CS77AP1A100M CHIP TNTL 10UF 10WV

C416 CK73FB1A106K CHIP C 10UF K
C417 CC73HCH1H221J CHIP C 220PF J
C418 CK73HB1E103K CHIP C 0.010UF K
C419 CK73FB1E475K CHIP C 4.7UF K
C420 CK73HB1E103K CHIP C 0.010UF K

C421 CK73HB1E682K CHIP C 6800PF K
C422 CC73HCH1H100C CHIP C 10PF C
C424,425 CK73HB1A104K CHIP C 0.10UF K
C427 CK73HB1E103K CHIP C 0.010UF K
C428 CC73HCH1H030C CHIP C 3.0PF C

C429,430 CK73HB1A104K CHIP C 0.10UF K
C431 CK73FB1A106K CHIP C 10UF K
C433 CK73FB1A106K CHIP C 10UF K
C435-438 CK73HB1A563K CHIP C 0.056UF K
C439,440 CK73HB1A104K CHIP C 0.10UF K

C441 CK73GB1E105K CHIP C 1.0UF K
C442 CK73HB1H471K CHIP C 470PF K
C443 CK73HB1E103K CHIP C 0.010UF K
C445 CK73HB1H102K CHIP C 1000PF K
C446 CK73GB1E105K CHIP C 1.0UF K

20

C724 CK73HB1E103K CHIP C 0.010UF K
C725 CC73HCH1E181J CHIP C 180PF J
C726,727 CK73HB1A104K CHIP C 0.10UF K
C728 CK73HB1H331K CHIP C 330PF K
C730 CK73HB1H331K CHIP C 330PF K

C731,732 CK73HB1E103K CHIP C 0.010UF K
C734 CK73HB1H102K CHIP C 1000PF K
C735 CK73HB1H122K CHIP C 1200PF K
C736,737 CK73HB1A104K CHIP C 0.10UF K
C738 CK73HB1H102K CHIP C 1000PF K

C739 CK73HB1E682K CHIP C 6800PF K
C740 CK73HB1H102K CHIP C 1000PF K
C742 CK73GB1E105K CHIP C 1.0UF K
C743 CK73HB0J105K CHIP C 1.0UF K
C744-746 CK73HB1E103K CHIP C 0.010UF K

C747,748 CK73HB1A104K CHIP C 0.10UF K
C749,750 CC73HCH1H470J CHIP C 47PF J
C751 CK73GB1E105K CHIP C 1.0UF K
C752,753 CC73HCH1H101J CHIP C 100PF J
C755 CC73HCH1H470J CHIP C 47PF J

C756 CK73HB1A104K CHIP C 0.10UF K
C757,758 CK73GB0J475K CHIP C 4.7UF K
C759,760 CK73HB1E103K CHIP C 0.010UF K
C761 CC73HCH1H100D CHIP C 10PF D
C762 CK73HB1A104K CHIP C 0.10UF K

PARTS LIST

Ref. No.

C763 CK73HB1E103K CHIP C 0.010UF K
C764 CK73HB1H102K CHIP C 1000PF K
C765-767 CK73HB1A104K CHIP C 0.10UF K
C768 CK73HB1H102K CHIP C 1000PF K
C771 CK73HB1A224K CHIP C 0.22UF K

Ad dress

New

Parts No. Description

parts

Desti­nation

NX-300

CONTROL UNIT (X53-4260-XX)

Ref. No.

L710-712 L92-0444-05 CHIP FERRITE
L713 L92-0163-05 BEADS CORE
L714-717 L92-0444-05 CHIP FERRITE
L718 L92-0408-05 CHIP FERRITE
L719 L33-1494-05 SMALL FIXED INDUCTOR

Ad dress

New

Parts No. Description

parts

Desti­nation

C772 CK73HB1E103K CHIP C 0.010UF K
C775 CC73HCH1H470J CHIP C 47PF J
C777 CK73HB1H102K CHIP C 1000PF K
C778 CK73HB0J105K CHIP C 1.0UF K
C779 CK73HB1E103K CHIP C 0.010UF K

C780 CK73HB1A224K CHIP C 0.22UF K
C781,782 CK73HB0J105K CHIP C 1.0UF K
C785 CK73HB1A224K CHIP C 0.22UF K
C786 CK73HB1E103K CHIP C 0.010UF K
C787 CK73HB0J105K CHIP C 1.0UF K

C788 CC73HCH1H150J CHIP C 15PF J
C789 CC73HCH1H680J CHIP C 68PF J
C790 CK73HB1A104K CHIP C 0.10UF K
C791 CK73HB1A393K CHIP C 0.039UF K
C792 CK73HB0J105K CHIP C 1.0UF K

C793,794 CK73HB1A104K CHIP C 0.10UF K
C795 CK73HB1E103K CHIP C 0.010UF K
C796 CK73HB1A104K CHIP C 0.10UF K
C797 CK73HB0J105K CHIP C 1.0UF K
C798 CS77AP1A100M CHIP TNTL 10UF 10WV

C799 CK73HB1A104K CHIP C 0.10UF K
C800 CK73HB1H152K CHIP C 1500PF K
C801 CK73HB1C223K CHIP C 0.022UF K
C802 CK73HB1E103K CHIP C 0.010UF K
C803 CK73HB1H102K CHIP C 1000PF K

C804 CC73HCH1H470J CHIP C 47PF J
C805,806 CK73HB1H471K CHIP C 470PF K
C808 CK73GB0J475K CHIP C 4.7UF K
C809 CK73FB1A106K CHIP C 10UF K
C812 CK73HB0J105K CHIP C 1.0UF K

CN1 E40-6755-05 FLAT CABLE CONNECTOR
CN22 E23-1325-05 TERMINAL
CN23 E40-6758-05 PIN ASSY
CN24 E23-1325-05 TERMINAL
CN403 E40-6813-05 PIN ASSY

CN404 E40-6421-15 PIN ASSY
CN405 E40-6754-05 FLAT CABLE CONNECTOR
CN701 E40-6586-05 SOCKET FOR PIN ASSY
CN710 E40-6757-05 PIN ASSY

F701 F53-0360-05 FUSE (0.25A)

CN401 J19-5386-05 HOLDER (LITHIUM CELL)

X101 L77-1802-05 CRYSTAL RESONATOR (32768HZ)
X102 L77-3015-05 TCXO (18.432MHZ)

R1 RK73HB1J105J CHIP R 1.0M J 1/16W
R2 RK73HB1J104J CHIP R 100K J 1/16W
R3 RK73HB1J123J CHIP R 12K J 1/16W
R4-10 RK73HB1J103J CHIP R 10K J 1/16W
R11 RK73HB1J104J CHIP R 100K J 1/16W

R12 RK73HB1J103J CHIP R 10K J 1/16W
R14 RK73HB1J472J CHIP R 4.7K J 1/16W
R15 RK73HB1J000J CHIP R 0.0 J 1/16W
R16 RK73HB1J331J CHIP R 330 J 1/16W
R17 RK73HB1J000J CHIP R 0.0 J 1/16W

R18 RK73HB1J822J CHIP R 8.2K J 1/16W
R19 RK73HB1J471J CHIP R 470 J 1/16W
R20 RK73HB1J102J CHIP R 1.0K J 1/16W
R21 RK73HB1J122J CHIP R 1.2K J 1/16W
R22-24 RK73HB1J102J CHIP R 1.0K J 1/16W

R25 RK73HB1J122J CHIP R 1.2K J 1/16W
R26 RK73HB1J102J CHIP R 1.0K J 1/16W
R27 RK73HB1J104J CHIP R 100K J 1/16W
R28,29 RK73HB1J102J CHIP R 1.0K J 1/16W
R30 RK73HB1J101J CHIP R 100 J 1/16W

R31 RK73HB1J102J CHIP R 1.0K J 1/16W
R32-35 RK73HB1J101J CHIP R 100 J 1/16W
R40 RK73HB1J000J CHIP R 0.0 J 1/16W
R101,102 RK73HB1J474J CHIP R 470K J 1/16W
R103 RK73HB1J102J CHIP R 1.0K J 1/16W

R105 RK73HB1J104J CHIP R 100K J 1/16W
R106 RK73HB1J472J CHIP R 4.7K J 1/16W K3,K4
R107 RK73HB1J104J CHIP R 100K J 1/16W
R108 RK73HB1J474J CHIP R 470K J 1/16W K3,K4
R110,111 RK73HB1J104J CHIP R 100K J 1/16W

R112 RK73HB1J000J CHIP R 0.0 J 1/16W K3,K4
R113 RK73HB1J104J CHIP R 100K J 1/16W
R114 RK73HB1J331J CHIP R 330 J 1/16W K3,K4
R115 RK73HB1J104J CHIP R 100K J 1/16W
R116 RK73HB1J473J CHIP R 47K J 1/16W

R117 RK73HB1J000J CHIP R 0.0 J 1/16W K3,K4
R118 RK73HB1J473J CHIP R 47K J 1/16W
R119 RK73HB1J104J CHIP R 100K J 1/16W
R120 RK73HB1J474J CHIP R 470K J 1/16W
R121-123 RK73HB1J104J CHIP R 100K J 1/16W

L1,2 L92-0408-05 CHIP FERRITE
L3 L92-0140-05 CHIP FERRITE
L4-7 L92-0408-05 CHIP FERRITE
L8 L92-0140-05 CHIP FERRITE
L101,102 L92-0408-05 CHIP FERRITE

L401 L33-1496-05 SMALL FIXED INDUCTOR
L402 L92-0467-05 CHIP FERRITE
L403 L92-0466-05 CHIP FERRITE
L409-411 L92-0467-05 CHIP FERRITE
L701 L92-0140-05 CHIP FERRITE

L702 L92-0162-05 BEADS CORE
L704-709 L92-0162-05 BEADS CORE

R126 RK73HB1J101J CHIP R 100 J 1/16W
R127,128 RK73HB1J000J CHIP R 0.0 J 1/16W
R129-131 RK73HB1J101J CHIP R 100 J 1/16W
R132,133 RK73HB1J104J CHIP R 100K J 1/16W
R135-137 RK73HB1J104J CHIP R 100K J 1/16W

R138 RK73HB1J473J CHIP R 47K J 1/16W
R139 RK73HB1J104J CHIP R 100K J 1/16W
R140 RK73HB1J000J CHIP R 0.0 J 1/16W
R141-143 RK73HB1J104J CHIP R 100K J 1/16W
R144 RK73HB1J471J CHIP R 470 J 1/16W

R145-147 RK73HB1J104J CHIP R 100K J 1/16W
R148 RK73HB1J151J CHIP R 150 J 1/16W

21

NX-300

CONTROL UNIT (X53-4260-XX)

Ad dress

New

Parts No. Description

parts

Ref. No.

R149 RK73HB1J000J CHIP R 0.0 J 1/16W
R150 RK73HB1J102J CHIP R 1.0K J 1/16W
R153,154 RK73HB1J104J CHIP R 100K J 1/16W
R155 RK73HB1J473J CHIP R 47K J 1/16W
R156,157 RK73HB1J472J CHIP R 4.7K J 1/16W

PARTS LIST

Desti­nation

Ref. No.

R453 RK73HB1J104J CHIP R 100K J 1/16W
R454 RK73HB1J474J CHIP R 470K J 1/16W
R455 RK73HB1J102J CHIP R 1.0K J 1/16W
R456 RK73HB1J474J CHIP R 470K J 1/16W
R457,458 RK73HB1J104J CHIP R 100K J 1/16W

Ad dress

New

Parts No. Description

parts

Desti­nation

R158,159 RK73HB1J220J CHIP R 22 J 1/16W
R160,161 RK73HB1J000J CHIP R 0.0 J 1/16W
R162 RK73HB1J474J CHIP R 470K J 1/16W
R163 RK73HH1J104D CHIP R 100K D 1/16W
R165 RK73HB1J102J CHIP R 1.0K J 1/16W

R166 RK73HB1J104J CHIP R 100K J 1/16W
R167 RK73HB1J102J CHIP R 1.0K J 1/16W
R168 RK73HB1J000J CHIP R 0.0 J 1/16W
R170 RK73HH1J103D CHIP R 10K D 1/16W
R171-173 RK73HB1J000J CHIP R 0.0 J 1/16W

R174-178 RK73HB1J104J CHIP R 100K J 1/16W
R180,181 RK73HB1J104J CHIP R 100K J 1/16W
R182 RK73HB1J474J CHIP R 470K J 1/16W
R183 RK73HB1J104J CHIP R 100K J 1/16W
R184 RK73HB1J473J CHIP R 47K J 1/16W

R185 RK73HB1J105J CHIP R 1.0M J 1/16W
R186 RK73HB1J473J CHIP R 47K J 1/16W
R187 RK73HB1J102J CHIP R 1.0K J 1/16W
R188 RK73HB1J473J CHIP R 47K J 1/16W
R189 RK73HB1J104J CHIP R 100K J 1/16W

R190 RK73HB1J102J CHIP R 1.0K J 1/16W
R191 RK73HB1J474J CHIP R 470K J 1/16W
R192 RK73HB1J102J CHIP R 1.0K J 1/16W
R193,194 RK73HB1J104J CHIP R 100K J 1/16W
R401 RK73HB1J152J CHIP R 1.5K J 1/16W K3,K4

R402 RK73HB1J151J CHIP R 150 J 1/16W
R403 RK73HB1J152J CHIP R 1.5K J 1/16W K3,K4
R404 RK73HB1J151J CHIP R 150 J 1/16W
R405 RK73HB1J152J CHIP R 1.5K J 1/16W K3,K4
R406 RK73HB1J000J CHIP R 0.0 J 1/16W

R459,460 RK73HB1J102J CHIP R 1.0K J 1/16W
R461 RK73HB1J103J CHIP R 10K J 1/16W
R462 RK73HB1J102J CHIP R 1.0K J 1/16W
R463 RK73HB1J104J CHIP R 100K J 1/16W
R464 RK73HB1J474J CHIP R 470K J 1/16W

R465,466 RK73HB1J103J CHIP R 10K J 1/16W
R467 RK73HB1J104J CHIP R 100K J 1/16W
R468 RK73HB1J000J CHIP R 0.0 J 1/16W
R469 RK73HB1J474J CHIP R 470K J 1/16W
R470 RK73HB1J183J CHIP R 18K J 1/16W

R471 RK73HB1J000J CHIP R 0.0 J 1/16W
R472 RK73HB1J223J CHIP R 22K J 1/16W
R473 RK73HB1J332J CHIP R 3.3K J 1/16W
R474,475 RK73HB1J333J CHIP R 33K J 1/16W
R477,478 RK73HB1J000J CHIP R 0.0 J 1/16W

R479 RK73HB1J102J CHIP R 1.0K J 1/16W
R481 RK73HB1J474J CHIP R 470K J 1/16W
R483 RK73HB1J473J CHIP R 47K J 1/16W
R484 RK73HB1J223J CHIP R 22K J 1/16W
R485 RK73HB1J103J CHIP R 10K J 1/16W

R487-490 RK73HH1J223D CHIP R 22K D 1/16W
R491 RK73HB1J104J CHIP R 100K J 1/16W
R492 RK73HB1J474J CHIP R 470K J 1/16W
R493 RK73HB1J000J CHIP R 0.0 J 1/16W
R494-497 RK73HH1J104D CHIP R 100K D 1/16W

R500 RK73HB1J473J CHIP R 47K J 1/16W
R501 RK73HB1J222J CHIP R 2.2K J 1/16W
R502,503 RK73HB1J103J CHIP R 10K J 1/16W
R504 RK73HB1J102J CHIP R 1.0K J 1/16W
R506 RK73HB1J222J CHIP R 2.2K J 1/16W

R407,408 RK73HB1J103J CHIP R 10K J 1/16W
R409 RK73HB1J470J CHIP R 47 J 1/16W
R410-416 RK73HB1J471J CHIP R 470 J 1/16W
R417 RK73HB1J000J CHIP R 0.0 J 1/16W
R418 RK73HB1J471J CHIP R 470 J 1/16W

R419,420 RK73HB1J000J CHIP R 0.0 J 1/16W
R424 RK73HH1J683D CHIP R 68K D 1/16W
R425 RK73HH1J333D CHIP R 33K D 1/16W
R426-429 RK73HB1J000J CHIP R 0.0 J 1/16W
R431 RK73HB1J474J CHIP R 470K J 1/16W

R432,433 RK73HB1J000J CHIP R 0.0 J 1/16W
R434 RK73HB1J393J CHIP R 39K J 1/16W
R435,436 RK73HB1J104J CHIP R 100K J 1/16W
R437 RK73HB1J471J CHIP R 470 J 1/16W
R438,439 RK73HB1J104J CHIP R 100K J 1/16W

R440 RK73HB1J000J CHIP R 0.0 J 1/16W
R441 RK73HB1J153J CHIP R 15K J 1/16W
R442 RK73HB1J102J CHIP R 1.0K J 1/16W
R443 RK73HB1J474J CHIP R 470K J 1/16W
R444 RK73HB1J564J CHIP R 560K J 1/16W

R445 RK73HB1J154J CHIP R 150K J 1/16W
R446 RK73HB1J274J CHIP R 270K J 1/16W
R447 RK73HB1J104J CHIP R 100K J 1/16W
R448 RK73HB1J103J CHIP R 10K J 1/16W
R449-452 RK73HB1J474J CHIP R 470K J 1/16W

22

R507-511 RK73HB1J102J CHIP R 1.0K J 1/16W
R512 RK73HB1J101J CHIP R 100 J 1/16W
R513-515 RK73HB1J102J CHIP R 1.0K J 1/16W
R516 RK73HB1J101J CHIP R 100 J 1/16W
R517 RK73HB1J102J CHIP R 1.0K J 1/16W

R518 RK73HB1J101J CHIP R 100 J 1/16W
R519-528 RK73HB1J102J CHIP R 1.0K J 1/16W
R529-531 RK73HB1J101J CHIP R 100 J 1/16W
R532 RK73HB1J102J CHIP R 1.0K J 1/16W
R533-535 RK73HB1J101J CHIP R 100 J 1/16W

R536-540 RK73HB1J102J CHIP R 1.0K J 1/16W
R541 RK73HB1J101J CHIP R 100 J 1/16W
R543 RK73HB1J101J CHIP R 100 J 1/16W
R544 RK73HB1J102J CHIP R 1.0K J 1/16W
R545 RK73HB1J101J CHIP R 100 J 1/16W

R546,547 RK73HB1J102J CHIP R 1.0K J 1/16W
R548,549 RK73HB1J473J CHIP R 47K J 1/16W
R550 RK73HB1J000J CHIP R 0.0 J 1/16W
R701-707 RK73HB1J000J CHIP R 0.0 J 1/16W
R709-715 RK73HB1J000J CHIP R 0.0 J 1/16W

R716 RK73GB2A000J CHIP R 0.0 J 1/10W
R717-722 RK73HB1J104J CHIP R 100K J 1/16W
R723 RK73HB1J105J CHIP R 1.0M J 1/16W
R724 RK73HB1J104J CHIP R 100K J 1/16W
R725 RK73HB1J100J CHIP R 10 J 1/16W

PARTS LIST

Ref. No.

R726 RK73HB1J104J CHIP R 100K J 1/16W
R727-729 RK73HB1J105J CHIP R 1.0M J 1/16W
R730 RK73HB1J471J CHIP R 470 J 1/16W
R731,732 RK73HB1J105J CHIP R 1.0M J 1/16W
R733 RK73HB1J473J CHIP R 47K J 1/16W

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Parts No. Description

parts

Desti­nation

NX-300

CONTROL UNIT (X53-4260-XX)

Ref. No.

R803 RK73HB1J103J CHIP R 10K J 1/16W
R804 RK73HB1J000J CHIP R 0.0 J 1/16W
R805,806 RK73HB1J473J CHIP R 47K J 1/16W
R807 RK73HB1J102J CHIP R 1.0K J 1/16W
R808 RK73HB1J471J CHIP R 470 J 1/16W

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New

Parts No. Description

parts

Desti­nation

R735 RK73HB1J473J CHIP R 47K J 1/16W
R736 RK73HB1J823J CHIP R 82K J 1/16W
R737 RK73HB1J153J CHIP R 15K J 1/16W
R738 RK73HB1J563J CHIP R 56K J 1/16W
R739 RK73HB1J823J CHIP R 82K J 1/16W

R740 RK73HB1J000J CHIP R 0.0 J 1/16W
R741 RK73HB1J474J CHIP R 470K J 1/16W
R742,743 RK73HB1J103J CHIP R 10K J 1/16W
R744 RK73HB1J223J CHIP R 22K J 1/16W
R745 RK73HB1J682J CHIP R 6.8K J 1/16W

R746 RK73HB1J563J CHIP R 56K J 1/16W
R747 RK73HB1J333J CHIP R 33K J 1/16W
R748 RK73HB1J103J CHIP R 10K J 1/16W
R749 RK73HB1J472J CHIP R 4.7K J 1/16W
R750 RK73HB1J103J CHIP R 10K J 1/16W

R752 RK73HB1J101J CHIP R 100 J 1/16W
R753 RK73HB1J683J CHIP R 68K J 1/16W
R754 RK73HB1J564J CHIP R 560K J 1/16W
R755 RK73HB1J104J CHIP R 100K J 1/16W
R756 RK73HB1J101J CHIP R 100 J 1/16W

R757 RK73HB1J223J CHIP R 22K J 1/16W
R758 RK73HB1J103J CHIP R 10K J 1/16W
R759 RK73HB1J101J CHIP R 100 J 1/16W
R761-764 RK73HB1J223J CHIP R 22K J 1/16W
R765 RK73HB1J334J CHIP R 330K J 1/16W

R766 RK73HB1J000J CHIP R 0.0 J 1/16W
R767 RK73HB1J103J CHIP R 10K J 1/16W
R768 RK73HB1J224J CHIP R 220K J 1/16W
R769,770 RK73HB1J334J CHIP R 330K J 1/16W
R771 RK73HB1J153J CHIP R 15K J 1/16W

R809 RK73HB1J334J CHIP R 330K J 1/16W
R810 RK73HB1J332J CHIP R 3.3K J 1/16W
R811 RK73HB1J823J CHIP R 82K J 1/16W
R812 RK73HB1J562J CHIP R 5.6K J 1/16W
R813 RK73HB1J273J CHIP R 27K J 1/16W

R814 RK73HB1J564J CHIP R 560K J 1/16W
R815 RK73HB1J104J CHIP R 100K J 1/16W
R816 RK73HB1J683J CHIP R 68K J 1/16W
R818 RK73HB1J104J CHIP R 100K J 1/16W
R819,820 RK73HB1J103J CHIP R 10K J 1/16W

R821 RK73HB1J104J CHIP R 100K J 1/16W
R822,823 RK73HB1J103J CHIP R 10K J 1/16W
R824 RK73HB1J393J CHIP R 39K J 1/16W
R825 RK73HB1J104J CHIP R 100K J 1/16W
R826 RK73HB1J334J CHIP R 330K J 1/16W

R827 RK73HB1J184J CHIP R 180K J 1/16W
R828,829 RK73HB1J000J CHIP R 0.0 J 1/16W
R830 RK73HB1J105J CHIP R 1.0M J 1/16W
R831 RK73HB1J474J CHIP R 470K J 1/16W
R832 RK73HB1J473J CHIP R 47K J 1/16W

R833 RK73HB1J684J CHIP R 680K J 1/16W
R834 RK73HB1J000J CHIP R 0.0 J 1/16W
R835 RK73HB1J153J CHIP R 15K J 1/16W
R836 RK73HB1J473J CHIP R 47K J 1/16W
R837 RK73HB1J683J CHIP R 68K J 1/16W

R838 RK73HB1J564J CHIP R 560K J 1/16W
R839 RK73HB1J333J CHIP R 33K J 1/16W
R840 RK73HB1J123J CHIP R 12K J 1/16W
R841 RK73HB1J564J CHIP R 560K J 1/16W
R842 RK73HB1J104J CHIP R 100K J 1/16W

R775 RK73HB1J183J CHIP R 18K J 1/16W
R777 RK73HB1J473J CHIP R 47K J 1/16W
R778 RK73HB1J333J CHIP R 33K J 1/16W
R779 RK73HB1J473J CHIP R 47K J 1/16W
R780 RK73HB1J104J CHIP R 100K J 1/16W

R782 RK73HB1J104J CHIP R 100K J 1/16W
R783 RK73HB1J183J CHIP R 18K J 1/16W
R784 RK73HB1J104J CHIP R 100K J 1/16W
R785 RK73HB1J682J CHIP R 6.8K J 1/16W
R786 RK73HB1J000J CHIP R 0.0 J 1/16W

R787 RK73HB1J124J CHIP R 120K J 1/16W
R788 RK73HB1J473J CHIP R 47K J 1/16W
R789 RK73HB1J154J CHIP R 150K J 1/16W
R790 RK73HB1J102J CHIP R 1.0K J 1/16W
R791 RK73HB1J474J CHIP R 470K J 1/16W

R793 RK73HB1J102J CHIP R 1.0K J 1/16W
R794 RK73HB1J104J CHIP R 100K J 1/16W
R795 RK73HB1J000J CHIP R 0.0 J 1/16W
R796 RK73HB1J333J CHIP R 33K J 1/16W
R797 RK73HB1J102J CHIP R 1.0K J 1/16W

R798 RK73HB1J104J CHIP R 100K J 1/16W
R799 RK73HB1J334J CHIP R 330K J 1/16W
R800 RK73HB1J474J CHIP R 470K J 1/16W
R801 RK73HB1J473J CHIP R 47K J 1/16W
R802 RK73HB1J474J CHIP R 470K J 1/16W

R843 RK73HB1J102J CHIP R 1.0K J 1/16W
R844 RK73HB1J472J CHIP R 4.7K J 1/16W
R845 RK73HB1J104J CHIP R 100K J 1/16W
R846 RK73HB1J471J CHIP R 470 J 1/16W
R847 RK73HB1J182J CHIP R 1.8K J 1/16W

R848 RK73HB1J000J CHIP R 0.0 J 1/16W K,K2
R849,850 RK73HB1J000J CHIP R 0.0 J 1/16W K3,K4
R850 RK73HB1J000J CHIP R 0.0 J 1/16W K,K2
R851,852 RK73HB1J683J CHIP R 68K J 1/16W
VR1 2B R31-0666-05 VARIABLE RESISTOR (VOL)

S1 2B S60-0437-05 ROTARY SWITCH (CH)

D11 MA2S111-F DIODE
D12-16 1SS416 DIODE
D17 EMZ6.8N ZENER DIODE
D18,19 HZC6.8-E ZENER DIODE
D20,21 NNCD6.8G-A ZENER DIODE

D22,23 DA221 DIODE
D101 MA2S111-F DIODE K3,K4
D102 1SS416 DIODE
D401-405 1SS388F DIODE
D406 HRB0502A DIODE

D407 MA2S111-F DIODE
D408 1SS301F DIODE
D409,410 MA2S111-F DIODE

If a part reference number is listed in a shaded box, that part does not come with the PCB.

23

NX-300

CONTROL UNIT (X53-4260-XX)
TX-RX UNIT (X57-7370-XX)

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Parts No. Description

parts

Ref. No.

D411 1SS416 DIODE
D412 1SS301F DIODE
D413 1SS388F DIODE
D414,415 1SS416 DIODE
D416,417 1SS388F DIODE

PARTS LIST

Desti­nation

Ref. No.

Q405 SSM6N16FE-F FET
Q406 2SB1132(Q,R) TRANSISTOR
Q407 UMG3N TRANSISTOR
Q408 EMD12 TRANSISTOR
Q409 2SA1955A-F TRANSISTOR

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Parts No. Description

parts

Desti­nation

D701 1SS301F DIODE
D702 MA2S111-F DIODE
D703-706 RB706F-40 DIODE
D707 DA221 DIODE
IC1 ✽ NJM2130F3-ZB BI-POLAR IC

IC101 Note 1 ROM IC
IC102 Note 1 MICROPROCESSOR IC
IC103 Note 1 SRAM IC
IC104 TC7SH08FU-F MOS-IC
IC105 XC6109C29ANN ANALOGUE IC

IC106 RV5C386A MOS-IC
IC107 SM5023CNDH-G MOS-IC
IC108 Note 1 MOS-IC
IC109 TC7SH08FU-F MOS-IC
IC401 TC74LCX245FK MOS-IC

IC402 TC7WZ245FK-F MOS-IC
IC403 LM2682MMX MOS-IC
IC404 ✽ XC6204B332D MOS-IC
IC406 XC6204B332M MOS-IC
IC407 LT1616ES6-PBF ANALOGUE IC

IC408 TC75S51FE(F) MOS-IC
IC409 TC7W66FK-F MOS-IC
IC411 NJM2880U105ZB ANALOGUE IC
IC412,413 TPA6201A1DRBR ANALOGUE IC
IC414 XC61CC5602NR MOS-IC

IC415 TC7SET08FU-F MOS-IC
IC416 S-812C31BPI-G ANALOGUE IC
IC417 TC7WH126FK MOS-IC
IC418 TC7WT125FUF MOS-IC
IC701 Note 1 MOS-IC

IC702 TC75W51FK(F) MOS-IC
IC703 M62364FP-F MOS-IC
IC704 TC75S51FE(F) MOS-IC
IC705 TC75W51FK(F) MOS-IC
IC706 TC75S51FE(F) MOS-IC

IC707 TC7W53FK(F) MOS-IC
IC708 XC6204B502PR MOS-IC
IC709 TC7W53FK(F) MOS-IC
IC710,711 TC75W51FK(F) MOS-IC
IC712 TC7S66FUF MOS-IC

IC713 TC75W51FK(F) MOS-IC
IC714 TC7W53FK(F) MOS-IC
IC715 TC75S51FE(F) MOS-IC
IC716 TC75W51FK(F) MOS-IC
IC717 ✽ XC9235A15CMN MOS-IC

Q1 2SA1362-F(GR) TRANSISTOR
Q2 2SC4617(S) TRANSISTOR
Q3,4 SSM3K15TE(F) FET
Q5 2SJ347F FET
Q101 2SA1832(GR)F TRANSISTOR K3,K4

Q102 2SC4617(S) TRANSISTOR K3,K4
Q103 SSM3K15TE(F) FET K3,K4
Q401,402 SSM6N16FE-F FET
Q403 ✽ 2SJ648-A FET
Q404 SSM3K15TE(F) FET

Q410 SSM3K15TE(F) FET
Q411 SSM6N16FE-F FET
Q412 SSM3K15TE(F) FET
Q413 2SA1955A-F TRANSISTOR
Q414,415 EMD12 TRANSISTOR

Q701 2SA1832(GR)F TRANSISTOR
Q702,703 SSM3K15TE(F) FET
Q704 2SC4617(S) TRANSISTOR
Q705 2SC4738(GR)F TRANSISTOR
Q706 2SA1832(GR)F TRANSISTOR

Q707 2SJ243-A FET
TH1 ERTJ0EV104H THERMISTOR
TH701 ERTJ0EV104H THERMISTOR

- X53-4260-12 SERVICE CONTROL UNIT (6KEY)

- X53-4260-13 SERVICE CONTROL UNIT (18KEY)

TX-RX UNIT (X57-7370-XX) -10: K,K3 -11: K2,K4

D900 B30-2278-05 LED (RED/YELLOW)

C500 CK73HB1A104K CHIP C 0.10UF K
C501 CC73HCH1H101J CHIP C 100PF J
C502 CK73HB1H471K CHIP C 470PF K
C503 CK73HB1A104K CHIP C 0.10UF K
C504 CK73HB1C103K CHIP C 0.010UF K

C505 CC73HCH1H101J CHIP C 100PF J
C506 CC73HCH1H100C CHIP C 10PF C
C508 CK73HB1C103K CHIP C 0.010UF K
C509 CC73HCH1H100C CHIP C 10PF C
C511 CK73FB0J106K CHIP C 10UF K

C512 CK73HB1C103K CHIP C 0.010UF K
C513 CC73HCH1H101J CHIP C 100PF J
C514-516 CK73HB1C103K CHIP C 0.010UF K K,K3
C514,515 CK73HB1C103K CHIP C 0.010UF K K2,K4
C517-519 CC73HCH1H101J CHIP C 100PF J

C520 CK73GB1E105K CHIP C 1.0UF K
C521 CC73HCH1H101J CHIP C 100PF J
C522 CK73HB1A104K CHIP C 0.10UF K
C523,524 CC73HCH1H101J CHIP C 100PF J
C525 CC73HCH1H470J CHIP C 47PF J

C526 CK73HB1A104K CHIP C 0.10UF K
C527-529 CC73HCH1H101J CHIP C 100PF J K,K3
C527,528 CC73HCH1H101J CHIP C 100PF J K2,K4
C533 CK73HB1H471K CHIP C 470PF K
C534 CC73HCH1H101J CHIP C 100PF J

C535 CS77AA1VR15M CHIP TNTL 0.15UF 35WV
C536 CC73HCH1H470J CHIP C 47PF J
C537 CC73HCH1H050B CHIP C 5.0PF B K,K3
C539 CS77BA1D100M CHIP TNTL 10UF 20WV
C541 C92-0863-05 CHIP TNTL 0.047UF 35WV

C542 C93-0787-05 CERAMIC 0.1UF 50WV
C543 CC73HCH1H030B CHIP C 3.0PF B K,K3
C543 CC73HCH1H040B CHIP C 4.0PF B K2,K4
C545 CK73HB1H471K CHIP C 470PF K K2,K4

24

Note 1: This part cannot be replaced. Therefore, this part is not supplied as a service part.

PARTS LIST

Ref. No.

C546 CK73HB1H472K CHIP C 4700PF K
C547 CK73HB1H471K CHIP C 470PF K K2,K4
C547,548 CC73HCH1H101J CHIP C 100PF J K,K3
C548 CC73HCH1H101J CHIP C 100PF J K2,K4
C550 CC73HCH1H050B CHIP C 5.0PF B

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Parts No. Description

parts

Desti­nation

NX-300

TX-RX UNIT (X57-7370-XX)

Ref. No.

C625 CK73HB1H471K CHIP C 470PF K
C626 CK73HB1A104K CHIP C 0.10UF K
C627 CC73HCH1H080B CHIP C 8.0PF B K2,K4
C627 CC73HCH1H100B CHIP C 10PF B K,K3
C628 CC73HCH1H100C CHIP C 10PF C

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Parts No. Description

parts

Desti­nation

C553 CC73HCH1H100B CHIP C 10PF B K2,K4
C553 CC73HCH1H050B CHIP C 5.0PF B K,K3
C554 CC73HCH1H470J CHIP C 47PF J
C555 CK73HB0J105K CHIP C 1.0UF K
C556 CK73HB1H471K CHIP C 470PF K

C557 CC73HCH1H101J CHIP C 100PF J K,K3
C557 CK73HB1H471K CHIP C 470PF K K2,K4
C561 CK73HB1C103K CHIP C 0.010UF K K2,K4
C562 CK73HB0J105K CHIP C 1.0UF K
C563 CC73HCH1H101J CHIP C 100PF J K2,K4

C565 CC73HCH1H330J CHIP C 33PF J
C566 CC73HCH1H680J CHIP C 68PF J K,K3
C566 CC73HCH1H820J CHIP C 82PF J K2,K4
C567 CC73HCH1H0R5B CHIP C 0.5PF B K2,K4
C568 CC73HCH1H1R5B CHIP C 1.5PF B K2,K4

C570 CC73HCH1HR75B CHIP C 0.75PF B
C571 CC73HCH1H030B CHIP C 3.0PF B
C572 CK73FB0J106K CHIP C 10UF K
C573 CC73HCH1H040B CHIP C 4.0PF B K,K3
C573 CC73HCH1H060B CHIP C 6.0PF B K2,K4

C574 CC73HCH1H020B CHIP C 2.0PF B K2,K4
C574 CC73HCH1H010B CHIP C 1.0PF B K,K3
C575 CC73HCH1H060B CHIP C 6.0PF B K2,K4
C575 CC73HCH1H030B CHIP C 3.0PF B K,K3
C576 CC73HCH1H050B CHIP C 5.0PF B

C577 CK73HB1H471K CHIP C 470PF K
C578 CK73GB0J475K CHIP C 4.7UF K
C579 CC73HCH1H050B CHIP C 5.0PF B
C580 CK73HB1H471K CHIP C 470PF K
C581 CC73HCH1H0R5B CHIP C 0.5PF B

C629 CK73HB1H471K CHIP C 470PF K
C630 CK73GB1E105K CHIP C 1.0UF K
C631 CS77AA1A6R8M CHIP TNTL 6.8UF 10WV
C632 CK73HB1H471K CHIP C 470PF K
C634-637 CK73HB1H471K CHIP C 470PF K

C639 CC73HCH1H330J CHIP C 33PF J K2,K4
C639 CC73HCH1H390J CHIP C 39PF J K,K3
C640 CC73HCH1H470J CHIP C 47PF J
C641 CC73HCH1H100C CHIP C 10PF C
C642,643 CC73HCH1H151J CHIP C 150PF J

C645 CK73GB1C104K CHIP C 0.10UF K
C646 CK73GB1E105K CHIP C 1.0UF K
C647 C93-0941-05 CERAMIC 18PF 50WV K,K3
C648,649 CK73HB1C103K CHIP C 0.010UF K
C650 C93-0937-05 CERAMIC 12PF 50WV K,K3

C651 CK73HB1H471K CHIP C 470PF K
C653 CK73HB1H471K CHIP C 470PF K
C654 C93-0987-05 CERAMIC 7.5PF 50WV K,K3
C660 CC73GCH1H101J CHIP C 100PF J
C661 CK73HB1H471K CHIP C 470PF K

C662 CC73GCH1H010B CHIP C 1.0PF B K,K3
C662 CC73GCH1H040B CHIP C 4.0PF B K2,K4
C663 CC73GCH1H101J CHIP C 100PF J
C664 CC73GCH1H040B CHIP C 4.0PF B K,K3
C664 CC73GCH1H2R5B CHIP C 2.5PF B K2,K4

C665 CC73GCH1H020B CHIP C 2.0PF B K,K3
C665 CC73GCH1H030B CHIP C 3.0PF B K2,K4
C666 CC73GCH1H050B CHIP C 5.0PF B K,K3
C666 CC73GCH1H080B CHIP C 8.0PF B K2,K4
C667 CC73GCH1H1R5B CHIP C 1.5PF B K,K3

C582 CK73HB1H471K CHIP C 470PF K
C583 CC73HCH1H0R5B CHIP C 0.5PF B
C584,585 CK73HB1H471K CHIP C 470PF K
C586 CC73HCH1H070B CHIP C 7.0PF B K,K3
C586 CC73HCH1H100B CHIP C 10PF B K2,K4

C587 CK73HB1H471K CHIP C 470PF K
C588 CC73HCH1H100B CHIP C 10PF B
C600 CK73HB1A104K CHIP C 0.10UF K
C601 CC73HCH1H101J CHIP C 100PF J
C602 CK73HB1A104K CHIP C 0.10UF K

C603 CC73HCH1H100B CHIP C 10PF B
C604,605 CK73HB1H471K CHIP C 470PF K
C607 CC73HCH1H070B CHIP C 7.0PF B
C609 CC73GCH1H010B CHIP C 1.0PF B K2,K4
C610-612 CK73HB1H471K CHIP C 470PF K

C613 CC73HCH1H040B CHIP C 4.0PF B K2,K4
C613 CC73HCH1H070B CHIP C 7.0PF B K,K3
C614,615 CK73HB1H471K CHIP C 470PF K
C617,618 CK73HB1H471K CHIP C 470PF K
C619 CK73HB1A104K CHIP C 0.10UF K

C621 CC73HCH1H040B CHIP C 4.0PF B K2,K4
C621 CC73HCH1H150J CHIP C 15PF J K,K3
C622 CK73HB1H471K CHIP C 470PF K
C623 CC73HCH1H120J CHIP C 12PF J K2,K4
C623 CC73HCH1H150J CHIP C 15PF J K,K3

C667 CC73GCH1H2R5B CHIP C 2.5PF B K2,K4
C668 CC73GCH1H080B CHIP C 8.0PF B K,K3
C668 CC73GCH1H100C CHIP C 10PF C K2,K4
C669 CC73GCH1H040B CHIP C 4.0PF B K,K3
C669 CC73GCH1H1R5B CHIP C 1.5PF B K2,K4

C670 CK73HB1H471K CHIP C 470PF K
C671 CC73HCH1H070B CHIP C 7.0PF B K,K3
C671 CC73HCH1H100B CHIP C 10PF B K2,K4
C672 CK73HB1H471K CHIP C 470PF K
C689-691 CK73HB1A104K CHIP C 0.10UF K

C692 C93-0951-05 CERAMIC 47PF 50WV
C700 CC73HCH1H070B CHIP C 7.0PF B
C701 CK73HB1C103K CHIP C 0.010UF K
C702 CC73HCH1H820J CHIP C 82PF J K2,K4
C703 CK73HB1A104K CHIP C 0.10UF K

C704 CC73HCH1H100B CHIP C 10PF B K2,K4
C704 CC73HCH1H470J CHIP C 47PF J K,K3
C705 CK73FB1E475K CHIP C 4.7UF K
C706 CC73HCH1H100B CHIP C 10PF B
C707 CC73HCH1H680J CHIP C 68PF J

C708 CC73HCH1H101J CHIP C 100PF J
C709-711 CK73HB1A104K CHIP C 0.10UF K
C712 CC73HCH1H680J CHIP C 68PF J
C713 CK73FB1A106K CHIP C 10UF K
C714 CK73GB1H102K CHIP C 1000PF K

25

NX-300

PARTS LIST

TX-RX UNIT (X57-7370-XX)

Ad dress

New

Parts No. Description

parts

Ref. No.

C715 CC73HCH1H470J CHIP C 47PF J K2,K4
C715 CK73HB1C103K CHIP C 0.010UF K K,K3
C716 CC73HCH1H820J CHIP C 82PF J K,K3
C717 CK73HB1C103K CHIP C 0.010UF K
C718 CK73HB1A104K CHIP C 0.10UF K

Desti­nation

Ref. No.

C774 CC73HCH1H030B CHIP C 3.0PF B K,K3
C775 CK73HB1H471K CHIP C 470PF K
C776 CC73HCH1H090B CHIP C 9.0PF B K,K3
C776 CC73HCH1H120G CHIP C 12PF G K2,K4
C777,778 CK73HB1H471K CHIP C 470PF K

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Parts No. Description

parts

Desti­nation

C719 CK73FB1A106K CHIP C 10UF K
C720 CC73HCH1H100B CHIP C 10PF B
C721 CK73HB1A104K CHIP C 0.10UF K
C722 CC73HCH1H470G CHIP C 47PF G
C723,724 CK73HB1A104K CHIP C 0.10UF K

C725 CK73HB1C103K CHIP C 0.010UF K
C727,728 CK73HB1A104K CHIP C 0.10UF K
C729 CK73FB1E474K CHIP C 0.47UF K
C730 CK73HB1C103K CHIP C 0.010UF K
C732 CK73HB1H471K CHIP C 470PF K

C733,734 CK73HB1C103K CHIP C 0.010UF K
C735 CC73HCH1H470G CHIP C 47PF G
C736 CK73HB1C103K CHIP C 0.010UF K
C737 CC73HCH1H020B CHIP C 2.0PF B
C738 CC73HCH1H220G CHIP C 22PF G

C739 CC73HCH1H060B CHIP C 6.0PF B
C740,741 CK73HB1C103K CHIP C 0.010UF K
C742 CK73FB1A475K CHIP C 4.7UF K
C743 CK73HB1C103K CHIP C 0.010UF K
C744,745 CK73HB1H471K CHIP C 470PF K

C746 CC73HCH1H090B CHIP C 9.0PF B
C747 CC73HCH1H100B CHIP C 10PF B
C748 CK73HB1H471K CHIP C 470PF K
C749 CC73HCH1H020B CHIP C 2.0PF B K,K3
C749 CC73HCH1H040B CHIP C 4.0PF B K2,K4

C750 CK73HB1C103K CHIP C 0.010UF K
C751 CC73HCH1H090B CHIP C 9.0PF B K2,K4
C751 CC73HCH1H100B CHIP C 10PF B K,K3
C752 CK73HB1H471K CHIP C 470PF K
C753 CC73HCH1H020B CHIP C 2.0PF B K,K3

C779 CK73HB1C103K CHIP C 0.010UF K
C780 CK73GB1H104K CHIP C 0.10UF K
C782 CC73HCH1H0R5B CHIP C 0.5PF B
C783 CK73GB1E105K CHIP C 1.0UF K
C784-786 CK73HB1H471K CHIP C 470PF K

C788 CK73GB1H104K CHIP C 0.10UF K
C789 CK73HB1H471K CHIP C 470PF K
C790 CK73HB1A104K CHIP C 0.10UF K
C791 CK73HB1H471K CHIP C 470PF K
C792 CK73HB1A104K CHIP C 0.10UF K

C794,795 CK73HB1H471K CHIP C 470PF K
C796 CC73HCH1H090B CHIP C 9.0PF B K,K3
C796 CC73HCH1H110G CHIP C 11PF G K2,K4
C798 CC73HCH1H030B CHIP C 3.0PF B K2,K4
C798 CC73HCH1H1R5B CHIP C 1.5PF B K,K3

C799 CK73HB1H471K CHIP C 470PF K
C800 CC73HCH1H020B CHIP C 2.0PF B K,K3
C800 CC73HCH1H1R5B CHIP C 1.5PF B K2,K4
C801 CK73HB1H471K CHIP C 470PF K
C802,803 CC73HCH1H040B CHIP C 4.0PF B

C804 CC73HCH1H090B CHIP C 9.0PF B K,K3
C804 CC73HCH1H110G CHIP C 11PF G K2,K4
C807 CC73HCH1H030B CHIP C 3.0PF B K2,K4
C807 CC73HCH1H050B CHIP C 5.0PF B K,K3
C809 CC73GCH1H180J CHIP C 18PF J K,K3

C810 CC73HCH1H020B CHIP C 2.0PF B K,K3
C810 CC73HCH1H040B CHIP C 4.0PF B K2,K4
C811 CC73HCH1H070B CHIP C 7.0PF B K2,K4
C811 CC73HCH1H090B CHIP C 9.0PF B K,K3
C813,814 CC73HCH1H270J CHIP C 27PF J K2,K4

C753 CC73HCH1H040B CHIP C 4.0PF B K2,K4
C754 CC73HCH1H030B CHIP C 3.0PF B K,K3
C754 CC73HCH1H090B CHIP C 9.0PF B K2,K4
C755 CC73HCH1H040B CHIP C 4.0PF B K,K3
C755 CC73HCH1H050B CHIP C 5.0PF B K2,K4

C756 CC73HCH1H090B CHIP C 9.0PF B K,K3
C756 CK73HB1H471K CHIP C 470PF K K2,K4
C758 CK73HB1H471K CHIP C 470PF K
C759,760 CK73HB1A104K CHIP C 0.10UF K
C761 CK73GB1E105K CHIP C 1.0UF K

C764 CC73HCH1H1R5B CHIP C 1.5PF B
C765 CK73HB1H471K CHIP C 470PF K
C766 CK73GB1H104K CHIP C 0.10UF K
C767 CC73HCH1H090B CHIP C 9.0PF B K,K3
C767 CC73HCH1H120G CHIP C 12PF G K2,K4

C768 CC73HCH1H010B CHIP C 1.0PF B
C769 CK73HB1H471K CHIP C 470PF K
C770 CC73HCH1H030B CHIP C 3.0PF B K2,K4
C770 CC73HCH1H040B CHIP C 4.0PF B K,K3
C771 CK73HB1H471K CHIP C 470PF K

C772 CC73HCH1H090B CHIP C 9.0PF B K,K3
C772 CC73HCH1H120G CHIP C 12PF G K2,K4
C773 CC73HCH1H010B CHIP C 1.0PF B K,K3
C773 CC73HCH1H1R5B CHIP C 1.5PF B K2,K4
C774 CC73HCH1H020B CHIP C 2.0PF B K2,K4

26

C849 CK73HB1H471K CHIP C 470PF K
C850 CC73HCH1H101J CHIP C 100PF J
C900 CK73GB1H102K CHIP C 1000PF K
C901,902 CK73HB1H471K CHIP C 470PF K
C903 CK73GB1H471K CHIP C 470PF K

C904-908 CC73HCH1H470J CHIP C 47PF J
C910 CC73HCH1H470J CHIP C 47PF J
C912-920 CC73HCH1H470J CHIP C 47PF J
C922,923 CC73HCH1H470J CHIP C 47PF J
C925-943 CC73HCH1H470J CHIP C 47PF J

C944 CK73HB1H471K CHIP C 470PF K
C945,946 CC73HCH1H470J CHIP C 47PF J
C947 CK73HB1H471K CHIP C 470PF K
C948,949 CK73GB1E105K CHIP C 1.0UF K
C950 C92-0765-05 CHIP TNTL 4.7UF 16WV

C951 CK73GB1C224K CHIP C 0.22UF K
C952 CK73HB1H102K CHIP C 1000PF K
C953 CK73HB1A104K CHIP C 0.10UF K
C954 CK73GB1C224K CHIP C 0.22UF K
C955,956 CK73HB1H102K CHIP C 1000PF K

C957,958 CK73GB1E105K CHIP C 1.0UF K
C961 CK73HB1H471K CHIP C 470PF K
C962 CC73HCH1E181J CHIP C 180PF J
C963 CK73GB1E105K CHIP C 1.0UF K
C964,965 CK73GB1C224K CHIP C 0.22UF K

PARTS LIST

Ref. No.

C966 CC73HCH1H220J CHIP C 22PF J
C967 CK73HB1H471K CHIP C 470PF K
C968 CK73GB1C224K CHIP C 0.22UF K
C969 CK73GB1E105K CHIP C 1.0UF K
C970,971 CK73HB1H102K CHIP C 1000PF K

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Parts No. Description

parts

Desti­nation

NX-300

TX-RX UNIT (X57-7370-XX)

Ref. No.

L703 L41-4778-45 SMALL FIXED INDUCTOR (47NH)
L704 L40-1891-86 SMALL FIXED INDUCTOR (1.8UH)
L705,706 L92-0138-05 CHIP FERRITE
L707 L41-2785-39 SMALL FIXED INDUCTOR (0.27UH)
L708 L41-5685-39 SMALL FIXED INDUCTOR (0.56UH)

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Parts No. Description

parts

Desti­nation

C972-974 CK73GB1E105K CHIP C 1.0UF K
C975 C93-0899-05 CERAMIC 9.0PF 50WV K2,K4
C975 C93-0987-05 CERAMIC 7.5PF 50WV K,K3
C976 CC73HCH1H470J CHIP C 47PF J
C977 CK73GB1E105K CHIP C 1.0UF K

C980 CK73GB1E105K CHIP C 1.0UF K
C981 CK73HB1A474K CHIP C 0.47UF K
C987 CC73HCH1H050B CHIP C 5.0PF B K2,K4
C988 C93-0945-05 CERAMIC 27PF 50WV K2,K4
C989 C93-0939-05 CERAMIC 15PF 50WV K2,K4

CN600 E23-1326-05 TERMINAL
CN601 E23-1167-05 TERMINAL K2,K4
CN737 E40-6358-05 SOCKET FOR PIN ASSY
CN900 E40-6422-15 SOCKET FOR PIN ASSY
CN901 E40-6752-05 FLAT CABLE CONNECTOR

CN902 E23-1326-05 TERMINAL

F900 F53-0324-05 FUSE (2.5A)

CF700 L72-1017-05 CERAMIC FILTER
CF701 L72-1020-05 CERAMIC FILTER
L500 L41-4795-39 SMALL FIXED INDUCTOR (4.7UH)
L503 L92-0163-05 BEADS CORE
L504 L40-1275-92 SMALL FIXED INDUCTOR (12NH)

L508,509 L40-2285-92 SMALL FIXED INDUCTOR (220NH)
L514-519 L40-2285-92 SMALL FIXED INDUCTOR (220NH)
L520 L40-1878-67 SMALL FIXED INDUCTOR (18NH) K,K3
L520 L40-2278-67 SMALL FIXED INDUCTOR (22NH) K2,K4
L521 L40-2278-67 SMALL FIXED INDUCTOR (22NH) K,K3

L709,710 L40-1575-92 SMALL FIXED INDUCTOR (15NH) K2,K4
L709,710 L40-1875-92 SMALL FIXED INDUCTOR (18NH) K,K3
L711 L40-2275-92 SMALL FIXED INDUCTOR (22NH) K,K3
L711 L40-3375-92 SMALL FIXED INDUCTOR (33NH) K2,K4
L713-715 L41-1078-14 SMALL FIXED INDUCTOR (10NH) K2,K4

L713-715 L41-8268-14 SMALL FIXED INDUCTOR (8.2NH) K,K3
L716 L92-0138-05 CHIP FERRITE
L717 L41-2285-14 SMALL FIXED INDUCTOR (220NH)
L720 L40-1075-92 SMALL FIXED INDUCTOR (10NH) K,K3
L721,722 L41-1078-14 SMALL FIXED INDUCTOR (10NH) K2,K4

L721,722 L41-8268-14 SMALL FIXED INDUCTOR (8.2NH) K,K3
L723 L34-4564-05 AIR-CORE COIL
L725 L40-6865-92 SMALL FIXED INDUCTOR (6.8NH) K2,K4
L725 L40-8265-92 SMALL FIXED INDUCTOR (8.2NH) K,K3
L726 L41-3378-03 SMALL FIXED INDUCTOR (33NH) K,K3

L726 L41-3978-03 SMALL FIXED INDUCTOR (39NH) K2,K4
L780 L40-1085-57 SMALL FIXED INDUCTOR (100NH)
L900 L92-0149-05 CHIP FERRITE
L901 L33-1462-05 SMALL FIXED INDUCTOR
L902 L40-2702-86 SMALL FIXED INDUCTOR (27UH) K2,K4

L903 L41-6869-16 SMALL FIXED INDUCTOR (6.8NH) K2,K4
X500 L77-3016-05 TCXO (19.2MHZ)
XF700 L71-0640-05 MCF (58.05MHZ)

R430 RK73GB2A000J CHIP R 0.0 J 1/10W
R431,432 RK73HB1J000J CHIP R 0.0 J 1/16W
R500,501 RN73HH1J104D CHIP R 100K D 1/16W
R502 RK73HB1J124J CHIP R 120K J 1/16W K,K3
R503 RK73HB1J100J CHIP R 10 J 1/16W

L521 L40-2778-67 SMALL FIXED INDUCTOR (27NH) K2,K4
L522 L40-2285-92 SMALL FIXED INDUCTOR (220NH)
L523 L92-0446-05 BEADS CORE
L524-526 L40-2285-92 SMALL FIXED INDUCTOR (220NH)
L527 L92-0446-05 BEADS CORE

L528 L40-2775-71 SMALL FIXED INDUCTOR (27NH) K,K3
L528 L40-3375-71 SMALL FIXED INDUCTOR (33NH) K2,K4
L530 L40-5675-57 SMALL FIXED INDUCTOR (56.0NH)
L598,599 L92-0163-05 BEADS CORE
L600 L40-2275-92 SMALL FIXED INDUCTOR (22NH)

L602 L40-1875-92 SMALL FIXED INDUCTOR (18NH) K,K3
L602 L40-2775-92 SMALL FIXED INDUCTOR (27NH) K2,K4
L603 L40-1575-92 SMALL FIXED INDUCTOR (15NH) K,K3
L603 L40-1875-92 SMALL FIXED INDUCTOR (18NH) K2,K4
L604 L92-0138-05 CHIP FERRITE

L605 L40-1275-92 SMALL FIXED INDUCTOR (12NH) K2,K4
L605 L40-6865-92 SMALL FIXED INDUCTOR (6.8NH) K,K3
L606 L41-1875-43 SMALL FIXED INDUCTOR (18NH)
L607 L92-0149-05 CHIP FERRITE
L609 L34-4575-05 AIR-CORE COIL

L610 L92-0149-05 CHIP FERRITE
L611 L41-2285-43 SMALL FIXED INDUCTOR (220NH)
L612-614 L34-4564-05 AIR-CORE COIL
L615 L40-1575-57 SMALL FIXED INDUCTOR (15.0NH) K,K3
L615 L40-2275-57 SMALL FIXED INDUCTOR (22.0NH) K2,K4

L701 L40-5681-86 SMALL FIXED INDUCTOR (0.56UH)

R504 RK73HB1J104J CHIP R 100K J 1/16W
R505 RK73HB1J000J CHIP R 0.0 J 1/16W
R506 RK73HB1J473J CHIP R 47K J 1/16W
R511-514 RK73HB1J100J CHIP R 10 J 1/16W
R515 RK73HB1J472J CHIP R 4.7K J 1/16W

R519 RK73HB1J100J CHIP R 10 J 1/16W
R520 RK73HB1J102J CHIP R 1.0K J 1/16W
R522 RK73HB1J100J CHIP R 10 J 1/16W
R523 RK73HB1J102J CHIP R 1.0K J 1/16W
R527 RK73HB1J000J CHIP R 0.0 J 1/16W

R529 RK73HB1J102J CHIP R 1.0K J 1/16W
R530 RK73HB1J473J CHIP R 47K J 1/16W
R531 RK73HB1J683J CHIP R 68K J 1/16W
R532 RK73HB1J000J CHIP R 0.0 J 1/16W
R533 RK73HH1J184D CHIP R 180K D 1/16W K,K3

R533 RK73HH1J224D CHIP R 220K D 1/16W K2,K4
R534 RK73HH1J473D CHIP R 47K D 1/16W
R535 RK73HB1J151J CHIP R 150 J 1/16W
R536 RK73HB1J000J CHIP R 0.0 J 1/16W
R537 RK73HB1J102J CHIP R 1.0K J 1/16W

R538 RK73HH1J391D CHIP R 390 D 1/16W
R539 RK73HB1J106J CHIP R 10M J 1/16W
R541 RK73HB1J103J CHIP R 10K J 1/16W
R546 RK73HB1J104J CHIP R 100K J 1/16W
R547 RK73HB1J000J CHIP R 0.0 J 1/16W

R548 RK73HB1J104J CHIP R 100K J 1/16W

27

NX-300

PARTS LIST

TX-RX UNIT (X57-7370-XX)

Ad dress

New

Parts No. Description

parts

Ref. No.

R550 RK73HB1J000J CHIP R 0.0 J 1/16W
R552 RK73HB1J104J CHIP R 100K J 1/16W K2,K4
R552 RK73HB1J124J CHIP R 120K J 1/16W K,K3
R554,555 RK73HB1J473J CHIP R 47K J 1/16W
R557 RK73HB1J152J CHIP R 1.5K J 1/16W

Desti­nation

Ref. No.

R632 RK73HB1J563J CHIP R 56K J 1/16W K2,K4
R633 RK73HB1J101J CHIP R 100 J 1/16W
R634 RK73HB1J000J CHIP R 0.0 J 1/16W
R635 RK73HB1J561J CHIP R 560 J 1/16W
R636 RK73HB1J221J CHIP R 220 J 1/16W

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New

Parts No. Description

parts

Desti­nation

R558 RK73HB1J474J CHIP R 470K J 1/16W
R559 RK73HH1J181D CHIP R 180 D 1/16W K,K3
R559 RK73HH1J221D CHIP R 220 D 1/16W K2,K4
R560 RK73HB1J220J CHIP R 22 J 1/16W
R561 RK73HH1J181D CHIP R 180 D 1/16W K,K3

R561 RK73HH1J221D CHIP R 220 D 1/16W K2,K4
R562 RK73HB1J102J CHIP R 1.0K J 1/16W
R563 RK73HB1J473J CHIP R 47K J 1/16W
R564 RK73HB1J154J CHIP R 150K J 1/16W
R565 RK73HB1J101J CHIP R 100 J 1/16W

R566 RK73HH1J474D CHIP R 470K D 1/16W
R567 RK73HB1J472J CHIP R 4.7K J 1/16W
R568 RK73HB1J474J CHIP R 470K J 1/16W
R570,571 RK73HB1J000J CHIP R 0.0 J 1/16W
R572 RK73HB1J100J CHIP R 10 J 1/16W

R573 RK73HB1J124J CHIP R 120K J 1/16W K2,K4
R574-576 RK73HB1J000J CHIP R 0.0 J 1/16W
R577 RK73GB2A000J CHIP R 0.0 J 1/10W
R580,581 RK73HB1J000J CHIP R 0.0 J 1/16W
R583 RK73HB1J000J CHIP R 0.0 J 1/16W K2,K4

R586 RK73HB1J000J CHIP R 0.0 J 1/16W
R589,590 RK73HB1J103J CHIP R 10K J 1/16W
R599 RK73HB1J104J CHIP R 100K J 1/16W
R600 RK73HB1J102J CHIP R 1.0K J 1/16W
R601 RK73HB1J183J CHIP R 18K J 1/16W

R602 RK73HB1J124J CHIP R 120K J 1/16W
R603 RK73HB1J222J CHIP R 2.2K J 1/16W
R604 RK73HB1J682J CHIP R 6.8K J 1/16W
R605 RK73HB1J103J CHIP R 10K J 1/16W
R606 RK73HB1J331J CHIP R 330 J 1/16W

R639 RK73HB1J103J CHIP R 10K J 1/16W
R641 RK73HB1J103J CHIP R 10K J 1/16W
R642 RK73EB2ER39K CHIP R 0.39 K 1/4W
R644 RK73HB1J220J CHIP R 22 J 1/16W K2,K4
R644 RK73HB1J470J CHIP R 47 J 1/16W K,K3

R645 RK73EB2ER39K CHIP R 0.39 K 1/4W
R646 RK73HB1J333J CHIP R 33K J 1/16W
R647 RK73EB2ER39K CHIP R 0.39 K 1/4W
R648,649 RK73HH1J154D CHIP R 150K D 1/16W
R650 RK73GB2A000J CHIP R 0.0 J 1/10W

R651-654 RK73HH1J274D CHIP R 270K D 1/16W
R655 RK73HB1J103J CHIP R 10K J 1/16W
R656 RK73HB1J563J CHIP R 56K J 1/16W
R657 RK73HB1J000J CHIP R 0.0 J 1/16W
R658 RK73HB1J182J CHIP R 1.8K J 1/16W

R659 RK73HB1J474J CHIP R 470K J 1/16W
R660 RK73HB1J473J CHIP R 47K J 1/16W
R661 RK73HB1J104J CHIP R 100K J 1/16W
R663 RK73FB2B000J CHIP R 0.0 J 1/8W K,K3
R664 RK73HB1J000J CHIP R 0.0 J 1/16W

R665,666 RK73HB1J271J CHIP R 270 J 1/16W
R667 RK73EB2E823J CHIP R 82K J 1/4W
R669 RK73HB1J471J CHIP R 470 J 1/16W
R670 RK73HB1J224J CHIP R 220K J 1/16W
R671 RK73GB2A000J CHIP R 0.0 J 1/10W

R701 RK73HB1J561J CHIP R 560 J 1/16W
R702 RK73HB1J334J CHIP R 330K J 1/16W
R703 RK73HB1J100J CHIP R 10 J 1/16W
R704 RK73HB1J102J CHIP R 1.0K J 1/16W
R705 RK73HB1J000J CHIP R 0.0 J 1/16W

R607 RK73HB1J222J CHIP R 2.2K J 1/16W
R608 RK73HB1J470J CHIP R 47 J 1/16W
R610 RK73HB1J472J CHIP R 4.7K J 1/16W
R612 RK73HB1J472J CHIP R 4.7K J 1/16W
R613 RK73HB1J000J CHIP R 0.0 J 1/16W

R616 RK73HB1J181J CHIP R 180 J 1/16W
R617 RK73HB1J331J CHIP R 330 J 1/16W
R618 RK73HB1J220J CHIP R 22 J 1/16W
R619 RK73HB1J821J CHIP R 820 J 1/16W K2,K4
R620 RK73HB1J000J CHIP R 0.0 J 1/16W K,K3

R620 RK73HB1J5R6J CHIP R 5.6 J 1/16W K2,K4
R621 RK73HB1J821J CHIP R 820 J 1/16W K2,K4
R622 RK73HB1J101J CHIP R 100 J 1/16W
R623 RK73HB1J103J CHIP R 10K J 1/16W K,K3
R623 RK73HB1J123J CHIP R 12K J 1/16W K2,K4

R624 RK73HB1J333J CHIP R 33K J 1/16W K2,K4
R624 RK73HB1J473J CHIP R 47K J 1/16W K,K3
R626 RK73HB1J121J CHIP R 120 J 1/16W K,K3
R626 RK73HB1J221J CHIP R 220 J 1/16W K2,K4
R627,628 RK73HB1J000J CHIP R 0.0 J 1/16W

R629 RK73HB1J273J CHIP R 27K J 1/16W
R630 RK73HB1J104J CHIP R 100K J 1/16W K2,K4
R630 RK73HB1J333J CHIP R 33K J 1/16W K,K3
R631 RK73HB1J470J CHIP R 47 J 1/16W
R632 RK73HB1J103J CHIP R 10K J 1/16W K,K3

28

R709 RK73HB1J103J CHIP R 10K J 1/16W
R710 RK73GB2A000J CHIP R 0.0 J 1/10W K,K3
R712 RK73HB1J103J CHIP R 10K J 1/16W
R714 RK73HB1J100J CHIP R 10 J 1/16W
R717 RK73HB1J473J CHIP R 47K J 1/16W

R718 RK73HB1J183J CHIP R 18K J 1/16W
R719 RK73HB1J274J CHIP R 270K J 1/16W
R720 RK73HB1J222J CHIP R 2.2K J 1/16W
R721 RK73HB1J103J CHIP R 10K J 1/16W
R722 RK73HB1J472J CHIP R 4.7K J 1/16W

R724 RK73HB1J104J CHIP R 100K J 1/16W
R725 RK73HB1J223J CHIP R 22K J 1/16W
R726 RK73HB1J183J CHIP R 18K J 1/16W
R727 RK73HB1J222J CHIP R 2.2K J 1/16W
R728 RK73HB1J221J CHIP R 220 J 1/16W

R730 RK73HB1J000J CHIP R 0.0 J 1/16W
R731 RK73HB1J103J CHIP R 10K J 1/16W
R733 RK73HB1J564J CHIP R 560K J 1/16W
R735 RK73HB1J101J CHIP R 100 J 1/16W
R736 RK73HB1J104J CHIP R 100K J 1/16W

R737 RK73HB1J221J CHIP R 220 J 1/16W
R738 RK73HB1J272J CHIP R 2.7K J 1/16W
R739 RK73HB1J221J CHIP R 220 J 1/16W
R740 RK73HB1J470J CHIP R 47 J 1/16W
R742 RK73HB1J472J CHIP R 4.7K J 1/16W

PARTS LIST

Ref. No.

R743 RK73HB1J681J CHIP R 680 J 1/16W
R744 RK73HB1J221J CHIP R 220 J 1/16W
R745 RK73HB1J102J CHIP R 1.0K J 1/16W
R746 RK73HB1J104J CHIP R 100K J 1/16W
R747 RK73HB1J154J CHIP R 150K J 1/16W

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New

Parts No. Description

parts

Desti­nation

NX-300

TX-RX UNIT (X57-7370-XX)

Ref. No.

R913 RK73HB1J102J CHIP R 1.0K J 1/16W
R914 RK73HB1J154J CHIP R 150K J 1/16W
R915-917 RK73HB1J474J CHIP R 470K J 1/16W
R918 RK73HB1J102J CHIP R 1.0K J 1/16W
R920,921 RK73HB1J473J CHIP R 47K J 1/16W

Ad dress

New

Parts No. Description

parts

Desti­nation

R748 RK73HB1J104J CHIP R 100K J 1/16W
R749 RK73HB1J184J CHIP R 180K J 1/16W
R750 RK73GB2A000J CHIP R 0.0 J 1/10W
R752,753 RK73HB1J000J CHIP R 0.0 J 1/16W
R755 RK73HB1J472J CHIP R 4.7K J 1/16W

R757 RK73HB1J104J CHIP R 100K J 1/16W K,K3
R757 RK73HB1J105J CHIP R 1.0M J 1/16W K2,K4
R758 RK73HB1J103J CHIP R 10K J 1/16W
R759,760 RK73HB1J104J CHIP R 100K J 1/16W K,K3
R759,760 RK73HB1J105J CHIP R 1.0M J 1/16W K2,K4

R761 RK73HB1J101J CHIP R 100 J 1/16W
R762 RK73HB1J103J CHIP R 10K J 1/16W
R763 RK73HB1J824J CHIP R 820K J 1/16W
R764 RK73HB1J104J CHIP R 100K J 1/16W
R765 RK73HB1J000J CHIP R 0.0 J 1/16W

R768 RK73HB1J000J CHIP R 0.0 J 1/16W
R769 RK73HB1J103J CHIP R 10K J 1/16W
R770 RK73HB1J680J CHIP R 68 J 1/16W
R771 RK73HB1J181J CHIP R 180 J 1/16W
R772 RK73HB1J000J CHIP R 0.0 J 1/16W

R773 RK73HB1J824J CHIP R 820K J 1/16W
R774,775 RK73HB1J104J CHIP R 100K J 1/16W
R777 RK73HB1J103J CHIP R 10K J 1/16W
R778 RK73HB1J104J CHIP R 100K J 1/16W
R779 RK73HB1J683J CHIP R 68K J 1/16W

R780 RK73HB1J000J CHIP R 0.0 J 1/16W
R781 RK73HB1J182J CHIP R 1.8K J 1/16W
R783 RK73HB1J224J CHIP R 220K J 1/16W
R784 RK73HB1J474J CHIP R 470K J 1/16W
R785 RK73HB1J104J CHIP R 100K J 1/16W K,K3

R785 RK73HB1J105J CHIP R 1.0M J 1/16W K2,K4
R786 RK73HB1J000J CHIP R 0.0 J 1/16W
R788 RK73HB1J104J CHIP R 100K J 1/16W K,K3
R788 RK73HB1J105J CHIP R 1.0M J 1/16W K2,K4
R790 RK73HB1J104J CHIP R 100K J 1/16W K,K3

R790 RK73HB1J105J CHIP R 1.0M J 1/16W K2,K4
R791 RK73HB1J000J CHIP R 0.0 J 1/16W
R792 RK73HB1J104J CHIP R 100K J 1/16W
R794,795 RK73HB1J103J CHIP R 10K J 1/16W
R796 RK73HB1J000J CHIP R 0.0 J 1/16W

R797 RK73HB1J473J CHIP R 47K J 1/16W
R798 RK73HB1J470J CHIP R 47 J 1/16W
R799 RK73HB1J000J CHIP R 0.0 J 1/16W
R800 RK73GB2A000J CHIP R 0.0 J 1/10W K2,K4
R900 RK73HB1J391J CHIP R 390 J 1/16W

R901 RK73GB2A000J CHIP R 0.0 J 1/10W
R902 RK73HB1J100J CHIP R 10 J 1/16W
R903 RK73HB1J821J CHIP R 820 J 1/16W
R904 RK73HB1J000J CHIP R 0.0 J 1/16W
R905 RK73HB1J330J CHIP R 33 J 1/16W

R906 RK73HB1J474J CHIP R 470K J 1/16W
R907 RK73GB2A100J CHIP R 10 J 1/10W
R908 RK73HB1J473J CHIP R 47K J 1/16W
R909 RK73GB2A000J CHIP R 0.0 J 1/10W
R910-912 RK73HB1J474J CHIP R 470K J 1/16W

R922 RK73HB1J102J CHIP R 1.0K J 1/16W
R923 RK73HB1J123J CHIP R 12K J 1/16W
R925 RK73HH1J334D CHIP R 330K D 1/16W
R926 RK73HH1J223D CHIP R 22K D 1/16W
R927 RK73HB1J102J CHIP R 1.0K J 1/16W

R928 RK73HB1J000J CHIP R 0.0 J 1/16W
R929 RK73HB1J102J CHIP R 1.0K J 1/16W
R931 RK73GB2A000J CHIP R 0.0 J 1/10W
R932 RK73HB1J104J CHIP R 100K J 1/16W
R933 RK73HB1J102J CHIP R 1.0K J 1/16W

R934 RK73HB1J273J CHIP R 27K J 1/16W
R935 RK73HB1J153J CHIP R 15K J 1/16W K2,K4
R950 RK73HB1J000J CHIP R 0.0 J 1/16W K,K3
R951 RK73HB1J000J CHIP R 0.0 J 1/16W K2,K4
R954 RK73GB2A000J CHIP R 0.0 J 1/10W K2,K4

R955-958 RK73HB1J000J CHIP R 0.0 J 1/16W K2,K4

S1 S70-0483-05 TACT SWITCH

D501 HSC119 DIODE
D505 DA221 DIODE
D506,507 1SV325F VARIABLE CAPACITANCE DIODE
D510 ✽ 1SV290B-F VARIABLE CAPACITANCE DIODE K2,K4
D510,511 1SV282-F VARIABLE CAPACITANCE DIODE K,K3

D511 1SV282-F VARIABLE CAPACITANCE DIODE K2,K4
D514-517 1SV282-F VARIABLE CAPACITANCE DIODE K,K3
D514,515 ✽ 1SV290B-F VARIABLE CAPACITANCE DIODE K2,K4
D516,517 1SV282-F VARIABLE CAPACITANCE DIODE K2,K4
D518 HSC119 DIODE

D519 1SV278F VARIABLE CAPACITANCE DIODE
D600,601 HSC277 DIODE
D604 HZU2ALL ZENER DIODE
D605 HZU5CLL ZENER DIODE
D606,607 HVC131 DIODE

D608 HSC119 DIODE
D700 HSC119 DIODE
D702-704 1SV286F VARIABLE CAPACITANCE DIODE
D705 HSC119 DIODE
D706 1SV286F VARIABLE CAPACITANCE DIODE

D708 1SV286F VARIABLE CAPACITANCE DIODE
D709 HVC131 DIODE
D710 1SV286F VARIABLE CAPACITANCE DIODE
D711 HVC131 DIODE
D901 1SR154-400 DIODE

D902 HSC119 DIODE
IC404 TC75W51FUF MOS-IC
IC500 LM73CIMKX-0 MOS-IC
IC501 ✽ TLV2381IDBV MOS-IC
IC502 Note 1 MOS-IC

IC503 ✽ TLV2381IDBV MOS-IC
IC504 TC75W51FUF MOS-IC
IC600 TA75W01FUF MOS-IC
IC700 MCP6021-E/OT MOS-IC
IC701 TK10931VTL-G ANALOGUE IC

IC702,703

TLV2381IDBV MOS-IC

✽

Note 1: This part cannot be replaced. Therefore, this part is not supplied as a service part.

29

NX-300

TX-RX UNIT (X57-7370-XX)

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New

Parts No. Description

parts

Ref. No.

IC900 TC75S51FE(F) MOS-IC
IC901 XC9101D09AKR ANALOGUE IC
IC902 TK11250CUCB MOS-IC
IC903 TK71733S BI-POLAR IC
Q503 2SC5383-T111 TRANSISTOR

Q504 2SK879-F(Y) FET
Q507 2SC5383-T111 TRANSISTOR
Q508,509 2SK508NV(K52) FET
Q510 SSM6L05FU-F FET
Q511 2SJ347F FET

Q512 2SC5636 TRANSISTOR
Q600,601 2SC5636 TRANSISTOR
Q602 2SK3077F FET
Q603 RD01MUS1-T113 FET
Q604 2SC5383-T111 TRANSISTOR

Q605 SSM3K15TE(F) FET
Q606 RD07MVS1BT122 FET
Q607 DTC144EE DIGITAL TRANSISTOR
Q608 2SK1824-A FET
Q610 EMD5 TRANSISTOR

PARTS LIST

Desti­nation

Ref. No.

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New

Parts No. Description

parts

Desti­nation

Q700 2SC5108(Y)F TRANSISTOR
Q701 2SC4215-F(Y) TRANSISTOR
Q703 3SK318 FET
Q704 2SC5383-T111 TRANSISTOR
Q705 3SK318 FET

Q706 2SK1830F FET
Q900 UMG9N TRANSISTOR
Q901-903 SSM6L05FU-F FET
Q904 SSM5H01TU-F FET
Q905 2SA1955A-F TRANSISTOR

TH600 ERTJ0EV104H THERMISTOR

30