Kenwood NX-300, NX-300 K2, NX-300 K3, NX-300 K4, NX-300G Service Manual

UHF DIGITAL TRANSCEIVER

NX-300(G)

SERVICE MANUAL

REVISED

This service manual has been revised due to the DSP IC modiﬁcation of the control unit.

NX-300(G) K,K2 NX-300(G) K3,K4

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

Badge (B43-1606-14)

Knob (PTT) (K29-9405-03)

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

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

MIC

Helical Antenna (KRA-44G: option)

MIC

1

4

GHI

7

PQRS

DEF

3

ABC

2

MNO

6

JKL

5

WXYZ

9

TUV

8

#

0

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

Badge (B43-1606-14)

Knob (PTT) (K29-9405-03)

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

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

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

CONTENTS

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

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

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

INSTALLATION .......................................................... 6

DISASSEMBLY FOR REPAIR ................................... 8

CIRCUIT DESCRIPTION ......................................... 13

COMPONENTS DESCRIPTION .............................. 19

PARTS LIST ............................................................. 21

EXPLODED VIEW .................................................... 37

PACKING ................................................................. 38

TROUBLE SHOOTING ............................................ 39

ADJUSTMENT ......................................................... 44

TERMINAL FUNCTION ........................................... 66

PC BOARD

CONTROL UNIT (XC1-0020-XX) ........................ 74

TX-RX UNIT (XC1-0130-XX) ............................... 78

SUB (GPS) UNIT (X58-5240-10) ........................ 82

LEVEL DIAGRAM ................................................... 83

INTERCONNECTION DIAGRAM .............................84

SCHEMATIC DIAGRAM .......................................... 86

BLOCK DIAGRAM ..................................................92

OPTIONAL ACCESSORIES

KNB-47L (Li-ion Battery Pack) .........................96

KNB-48L (Li-ion Battery Pack) .........................96

KRA-44G (UHF Helical Antenna) ...................... 96

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

APPENDIX (SCHEMATIC DIAGRAM XC1-002)

This product complies with the

directive for the European market.

RoHS

This product uses Lead Free solder.

NX-300(G)

Document Copyrights

rights reserved.

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

Disclaimer

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

GENERAL

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced technicians familiar with similar types of commercial grade 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.

Firmware Copyrights

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

Transceivers containing AMBE+2™ Vocoder:

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

PERSONAL SAFETY

The following precautions are recommended for personal safety:

• DO NOT transmit until all RF connectors are veriﬁed se-

cure 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 qualiﬁed techni-

cian only.

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment information, the full part identiﬁcation 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 sufﬁcient description of the required component for proper identiﬁcation.

The Control Unit and TX-RX Unit both have been updated due to DSP IC replacement. There is no compatibility between new and old combination. Refer to the below table. Please use the suitable unit for your service by referring to the suitable service manual.

Service Manual List

Title Market code Serial number Unit Unit number Parts number Remarks

TX-RX

~ B4200596

Control

NX-300(G) K, K2, K3, K4

TX-RX

B4200597 ~

Control

Note: Refer to page 11 for compatibility information of the Control unit and TX-RX unit.

SERVICE

This transceiver is designed for easy servicing. Refer to the schematic diagrams, printed circuit board views, and alignment procedures contained within.

NOTE

You must use KPG-111D/111DN version 4.40 or later for this transceiver. KPG-111D/111DN versions earlier than version 4.40 will not work properly.

X57-8960-XX

(J79-0431-09)

X53-4590-XX

(J79-0131-39) XC1-0130-XX

(J79-0431-19) XC1-0020-XX

(J79-0441-09)

B5B-7110-00 First edition

B5B-7110-10

This service manual

Revised

2

SYSTEM SET-UP

NX-300(G)

Merchandise received

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

Frequency range (MHz)

TX/RX 450~520 5W NX-300(G) K

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

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

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

A personal computer, programming interface (KPG-36A/36U), and FPU (programming software) are required for programming. (The frequency, and signaling data are programmed for the transceiver.)

YES YES

YES

Are you using the GPS function?

NO

KRA-23/KRA-27

Optional antenna

KMC-41/KMC-42W/

KMC-51/KMC-52

Speaker microphone

(Option)

VGS-1 See pages 6 to 8.

(Option)

RF power

(Option)

* If the internal GPS func-

tion is not used, the KMC47GPS can be used as GPS speaker microphone.

Type

KRA-44G

Optional antenna

DTMF keypad

No

Yes

(Option)

1. Modes

User mode

Panel test mode

PC mode

Firmware programming mode

Clone mode

Firmware version information

Delivery

Panel tuning mode

Data programming mode

PC test mode

REALIGNMENT

User mode For normal use.

Panel test mode

Panel tuning mode Used by the dealer to tune the transceiver.

PC mode

PC tuning mode

Data programming mode

PC test mode

Firmware programming mode

Clone mode

Firmware version information

Mode

Function

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.

Used when changing the main program of the ﬂash memory.

Used to transfer programming data from one transceiver to another.

Used to conﬁrm the internal ﬁrmware version.

3

NX-300(G)

ABC

3

DE

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

[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-36A/36U), and FPU programming software.

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

PC

KPG-36A or KPG-36U

5-2. Connection procedure

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

Note:

• You must install the KPG-36U driver in the computer to use the USB programming interface cable (KPG-36U).

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

When data is transmitting from the transceiver, the red

LED blinks.

When data is receiving by the transceiver, the green LED

blinks.

Note:

The data stored in the computer must match the “Model

Name” when it is written into the ﬂash memory.

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

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

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

The KPG-36A connects the universal connector of the

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

5-4. KPG-36U description (USB programming interface cable: Option)

The KPG-36U is a cable which connects to a USB port

on a computer.

When using the KPG-36U, install the driver software in

the computer. The KPG-36U driver runs under Windows XP, Vista, 7 or 8.

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

load from the following URL:

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

5-5. Programming software KPG-111D/111DN (Ver. 4.40 or later) description

The FPU is the programming software for the transceiver

supplied on a CD. This software runs under Windows XP, Vista, 7 or 8 on a PC.

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

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

FPU

D-SUB

(9-pin)

PC

USB

MIC

1

4

GHI

2

F

6. Firmware Programming Mode

KPG-36A

Transceiver

Fig. 1

4

KPG-36U

Transceiver

Note:

Don’t write the ﬁrmware which is V2.05.00 or before. “INIT

ERROR2” will be displayed and transceiver will never revive.

REALIGNMENT

NX-300(G)

6-1. Preface

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

6-2. Connection procedure

Connect the transceiver to the personal computer using the interface cable (KPG-36A/36U). (Connection is the same as in the PC Mode.)

6-3. Programming

1. Start up the firmware programming software (Fpro.exe

(ver. 6.20 or later)). The Fpro. exe exists in the KPG-

111D/111DN installed folder.

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

and communications port in the conﬁguration item.

3. Set the ﬁrmware 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 transceiver

starts to receive data, the [LOADING] display lights.

7. If writing ends successfully, the checksum is calculated

and a result is displayed.

8. If you want to continue programming other transceivers,

repeat steps 4 to 7.

] key while turning the transceiver

Note:

This mode cannot be entered if the Firmware Program-

ming mode is set to Disable in the Programming soft-

ware.

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 redis-

played.

Note:

Normally, write in the high-speed mode.

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

Note:

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

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;

If the [

displayed, the Read authorization password input screen

is displayed.

If the [ ] key or [ ] key is pressed while the Read

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): The password conﬁrmation

] key): Delete the least digit from the current

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

] key while turning the transceiver

] or [ ]

] and [ ]

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

5

NX-300(G)

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.

Note:

• 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)

MIC

1

4

GHI

2

ABC

DEF

3

MIC

1

4

GHI

2

ABC

DEF

3

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 ﬁrmware version information appears on the LCD.

INSTALLATION

Preparation before Installing the Option board

■ Removing the GPS PCB

1. Remove the two screws from the cover.

2. Remove the cover by inserting the tip of a pair of tweezers into the screw hole of the cover and prying it open.

6

NX-300(G)

3. Remove the coaxial cable from the GPS PCB. Note: When you remove the coaxial cable from the GPS

PCB, remove perpendicularly to the GPS PCB.

Coaxial cable

Coaxial connector

GPS PCB

4. Remove the GPS PCB from the connector (CN710) of the Control PCB.

6. Fold the ﬁbrous sheet (G10-1362-04) in half, and cover the terminal of the coaxial cable as shown in the ﬁgure.

Coaxial cable

Fibrous sheet (G10-1362-04)

7. Insert the fibrous sheet into the slit of the holder as shown in the ﬁgure.

5. Afﬁx the terminal of the coaxial connector to the ﬁbrous sheet (G10-1362-04) as shown in the ﬁgure.

Coaxial cable

Fibrous sheet (G10-1362-04)

7

NX-300(G)

Voice Guide & Storage Unit (VGS-1: Option)

Installing the VGS-1

■

1. Attach the flat spring (G02-1846-03) to the VGS-1 as shown in the ﬁgure.

Note: Attach the ﬂat spring so that its convex ﬁts the PCB hol-

low of the VGS-1.

2. Attach the cushion (G13-1974-04) to the VGS-1 as shown in the ﬁgure.

Note: Be sure to not cover the VGS-1 connector with the cush-

ion.

3. Insert the VGS-1 connector into the connector (CN710) of the Control PCB.

4. Reinstall the cover using the two screws removed in step 1 of “Removing the GPS PCB” described on page 6.

VGS-1

PCB hollow

Flat spring (G02-1846-03)

Convex part

Cushion (G13-1974-04) 21x21x1.0mm

The coaxial cable is located under the VGS-1.

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 efﬁciency 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 ﬁgure, 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.

VGS-1

CN710

VGS-1

Cushion

Flat spring

8

CN901

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) a.

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

3. Remove the 14 screws c.

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

Cord ASSY

CN900

a

PTT FPC

b

NX-300(G)

b

d

3. Precautions for Reassembly

■ Mounting the chassis onto the case

1. Place the key top on the chassis. Then, fit the chassis tightly into the groove of the key top a.

Note: Conﬁrm that the entire groove of the key top ﬁts to the

chassis tightly.

a

c

TX-RX unit

c

Note: The illustration of the Sub (GPS) unit and GPS coaxial cable is omitted.

c

d

■ Removing the TOP packing (G53-1762-02)

1. Pull the TOP packing to the left to remove the packing that is ﬁt into the left groove of the chassis a.

2. Pull the TOP packing to the right to remove the packing that is ﬁt into the right groove of the chassis b.

3. Turn back the TOP packing as shown in the ﬁgure c.

4. Remove the TOP packing d.

2. Mount the chassis onto the case b. 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 ﬁgure, return it to the normal position using a soft tipped item (e.g., ﬁnger) c.

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

damage the key top or packing.

18-key part

b

Auxiliary (Orange) key

a

c

9

NX-300(G)

DISASSEMBLY FOR REPAIR

Removing the lithium cell (W09-0971-05)

■

Insert a non-conductive screwdriver to groove of one side

of the socket (CN11, 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 (CN11, CN401).

Push the lithium cell to insert the lithium cell into the socket.

Afﬁxing the keyboard ASSY (S79-0472-05)

■

Afﬁx the keyboard ASSY to the Control unit as shown in

the ﬁgure.

After affixing the keyboard ASSY to the Control unit,

conﬁrm 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.

■ Forming the VOL/CH FPC, Cord ASSY and Universal connector FPC

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

nector FPC as shown in the ﬁgure.

VOL /CH FPC

Universal Connector FPC

Cord ASSY

Note: The illustration of the Sub (GPS) unit and GPS coaxial cable is omitted.

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 S

Cord ASSY

Keyboard ASSY

Positioning holes

Control unit

■ 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 ﬁgure.

Volume

VOL/CH FPC

Channel switch

J87-0007 S

Universal Connector FPC

Relay hardware (E29-1242-04) installation procedure

■

1. Fit one side of the relay hardware to a right corner of the chassis using a pair of tweezers a.

2. Fit the other side of the relay hardware to the rib of the chassis b.

b

a

10

DISASSEMBLY FOR REPAIR

NX-300(G)

■ 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)

Mechanical stopper (D32-0446-14)

Forming the GPS coaxial cable (E37-1718-05)

■

Form the GPS coaxial cable as shown in the ﬁgure.

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 “E3EA” or later ﬁrmware versions must be applied.

2. PCB compatibility chart

Firmware and Control Unit

“5995” or earlier version

Compatibility Chart

X57-8960-14/-15 (Old)

TX-RX Unit

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

(J79-0431-09)

XC1-0130-10/-11 (New)

(J79-0431-19)

(Compatible with “E3EA” or later ﬁrmware)

X53-4590-10/-11/-12/-13 (Old)

(J79-0131-39)

Available NOT Available

NOT Available Available

“E3EA” or later version

XC1-0020-10/-11/-12/-13 (New)

(J79-0441-09)

11

NX-300(G)

DISASSEMBLY FOR REPAIR

■ 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 (B42-7417-

04)”, “Badge (B43-1606-14)” and “Fibrous Sheet (G101373-04)” should be ordered and changed together because Sticker (B42-7417-04), Badge (B43-1606-14) and Fibrous Sheet (G10-1373-04) are non-reusable.

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)

Speaker T07-0755-25

Switch Unit (6-key FPC) X41-3840-10

Switch Unit (PTT FPC) X41-3830-10

Chassis A10-4186-04

Terminal Block E72-0425-13

X42-3510-10 Cushion (50-pin FPC) G13-2293-04

Sticker B42-7417-04 “NEXEDGE” is printed. Badge B43-1606-14 “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)

Sheet (PTT) G11-4428-04

Adhesive Sheet (PTT FPC)

Relay Hardware (VCO-Chassis)

Sheet (Air) G11-4500-04

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 (G11-4500-04). Cushion (ANT) G13-2220-04 Used for ﬁxing the Terminal ASSY. Adhesive Sheet

(Terminal Block)

Used for ﬁxing the LCD ASSY on the Illumination Guide (LCD). Also used for ﬁxing 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).

J99-0745-04

J99-0712-14

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

E29-1242-04 Used for stabilizing the shield performance of the VCO.

J99-0747-04

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

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

Used for ﬁxing 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 ﬁxing the Terminal Block and the Packing (Terminal Block).

12

CIRCUIT DESCRIPTION

NX-300(G)

1. Overview

The NX-300(G) 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 conﬁguration

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 ﬁlter (L721, L722). The bandpass ﬁlter 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 ampliﬁed by an RF ampliﬁer (Q705), and passed through the bandpass ﬁlter (L713, L714, L715). The resulting signal is applied to the ﬁrst mixer (Q703), where it is mixed with the ﬁrst local oscillator signal output from the frequency synthesizer to produce the ﬁrst IF (58.05MHz).

ANT

L612~L614

LPF

ANT

SW

D606,D607 D709,D711

IC108 ASIC

IC719

DSP

L721,L722

BPF

IC704 IC707

AMT

RF AMP

Q705

L713~L715

1st PLL OSC (PLL)

IC713

(2/2)

BPF

IC703

VOL

x3

1st MIX

Q703

IC408

2. Frequency Conﬁguration

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 ﬁrst 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 ampliﬁed and fed to the antenna.

CF

450kHz

SP

MIX

IF AMP

57.6MHz

PLL

VCO

3-2. IF Circuit

The ﬁrst IF signal is passed through a four-pole monolithic crystal ﬁlter (XF700) to reject adjacent channel signals. The ﬁltered ﬁrst IF signal is ampliﬁed by the ﬁrst IF ampliﬁer (Q701) and then applied to the lF system IC (IC701). The IF system IC provides a second mixer, AGC ampliﬁer, 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 ﬁlter (CF700) to reject the adjacent channel signal. The ﬁltered second IF signal is ampliﬁed by the AGC ampliﬁer.

The signal from the AGC ampliﬁer is input to the ASIC (IC108) through the ceramic ﬁlter (CF701) and operational ampliﬁer (IC700).

MCF

BPF

19.2MHz

IC409

SWSW

X500

VC

TCXO

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

13

NX-300(G)

CIRCUIT DESCRIPTION

3-3. Audio Ampliﬁer 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 IC719 goes through the amplifier (IC704). The signal then goes through a mute switch (IC707), ampliﬁer (IC713), electronic volume control (IC703), and AF ampliﬁer (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 ampliﬁer (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 ampliﬁer (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

Fig. 3 Audio ampliﬁer circuit

Q406

Q405

IC409

VDD

IC413

SHUT DOWN

VDD

IC412

SHUT DOWN

INT. SP

EXT. SP

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 ampliﬁer. The signal from the microphone goes through the mute switch (Q707), and is ampliﬁed 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 (IC719), 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 ﬁlter. The DAC (IC703) assigns the base band signal to the VCO. At this time, the level output according to the transmit carrier is ﬁne-adjusted according to each modulation method.

14

EXT. MIC

INT. MIC

Q5

SW

MSW

IC716

SW

MM

(1/2)

AMP

AGC

D703,D704

Q705,Q706

Q707 IC712

Q4

IC719

DSP

IC108

ASIC

IC705

(2/2)

LPF

SW

SCSW

IC710

(1/2)

AMP

IC706

LPF

Fig. 5 Audio band and Base band circuit

IC705

(1/2)

LPF

IC710

(2/2)

AMP IC703

IC502

PLL

AMP

IC504

X500

VCTCXO

VCO

CIRCUIT DESCRIPTION

NX-300(G)

4-3. VOX

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

4-4. Drive and Final Ampliﬁer

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

+B

Q602

Pre-Drive

AMP

R642

R645

R647

From

T/R SW

(D601)

Q601

RF

AMP

REF VOL

(IC108)

4-5. APC Circuit

The APC circuit always monitors the current flowing through the RF power ampliﬁer (Q606) and keeps a constant current. The voltage drop at R642, R645 and R647 is caused by the current ﬂowing through the RF power ampliﬁer 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

Q603

Drive AMP

Final AMP

VDD

IC600

(1/2)

VGG

D606,D607Q606

ANT

SW

IC600

(2/2)

LPF

Fig. 6 Drive and ﬁnal ampliﬁer 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 ﬁxed 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.

15

NX-300(G)

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 ﬂash 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.

16

CIRCUIT DESCRIPTION

NX-300(G)

6-2. Memory Circuit

The memory circuit consists of the ASIC (IC108) and the SRAM(IC103) and ﬂash memory (IC101). The ﬂash 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 ﬂash memory stores the data that is written by the FPU (KPG-111D/111DN), tuning data (Deviation, Squelch, etc.) ,and ﬁrmware program (User mode, Test mode, Tuning mode, etc.). This data must be rewritten when replacing the ﬂash 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 (XC1-002). 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 (IC719) 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 ﬁltering processing

• Microphone ampliﬁer 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 (XC1-013). The battery voltage passes through the 2.5A fuse (F900), and goes to the RF final amplifier, AVR ICs (IC902, IC903), and Control unit (XC1-002).

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.

17

NX-300(G)

CIRCUIT DESCRIPTION

F900

2.5A /SAVE

/5TC

5RC

SBC

5UC

SBC

5A

VOL SW

CN710

IC902

IC903

AVR IC

Q901

SB3 SW

CN900

CN404

IC411

AVR IC

Q403

SB2 SW

IC708

AVR IC

IC416

AVR IC

IC407

DC/DC

IC414

Detect

Q408

D408

AVR

SB1

AND

OR

SBC

Q905

50T SW

Q902

50R SW

Q903

50IF SW

IC901

DC/DC

IC403

DC/DC

Q409 31BU

IC404

AVR

IC717

DC/DC

IC406

AVR

Q402

Lvl Conv

Q401

Lvl Conv

D412

OR

TX-RX unit (XC1-013)

RF Final AMP

+B

APC

50C

VCO

50T

TX circuit

50R

RX circuit

50IF

IF circuit

PLL, VCTCXO

33C

GPS circuit

SB3

TX/Busy LED

150C

Assist, Tune

Control unit (XC1-002)

50U

Universal

SB2

BackLight Key Light

-10V LCD Bias

31BU

SRAM, RTC

ASIC, DSP I/O,

33M

Flach, LCD DRV

15M

ASIC, DSP core

ASIC Analog,

33A

Audio

/PSW

IC108

ASIC

/BINT

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. 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. 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 (IC719) to perform this operation. The transceiver compander can be turned on or off using the FPU.

10. GPS Circuit

The GPS information function can be used by setting it through the FPU. When the GPS information function is enabled, the AVR (IC4/GPS) is enabled by the OPT5, and is supplied to the GPS circuit.

The GPS circuit block consists of a TX-RX unit and a GPS unit (X58). The circuit from an antenna to LNA is on a TX-RX unit. This output is connected to the GPS unit by the coaxial cable.

The GPS signal of 1575.42MHz received with the antenna (with GPS band) is passed by the HPF and BPF (L605/ TX-RX) and is amplified by the LNA (IC881/TX-RX). The GPS signal is processed by the GPS IC (IC1/GPS) and input to the ASIC (IC108/CONT) through the UART port. The ASIC (IC108/CONT) processes the GPS data (NMEA) and sends the resulting information to the LCD.

The GPS IC operates in stand-alone. Operating voltage is 3.1V. When the transceiver power is off, the GPS IC will be backed up with the internal coin battery. When the battery pack is removed, the GPS IC will be backed up for about one day in a coin battery. But if the GPS IC has never had the position ﬁxed, it will not be backed up.

When the GPS function is enabled, the consumption current increases by about 70 mA.

18

IC4

AVR IC

Sub (GPS) unit (X58)

CN10

GPS module

31V

Buffer

Lithium cell

V_BCKP

Fig. 8 Power supply circuit

COMPONENTS DESCRIPTION

NX-300(G)

Control unit (XC1-0200-XX)

Ref. No. Part Name Description

IC1 IC LCD contrast IC101 IC Flash memory 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) IC719 IC DSP 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 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

19

NX-300(G)

COMPONENTS DESCRIPTION

TX-RX unit (XC1-0130-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 IC881 IC LNA (for GPS) IC900 IC 50T control IC901 IC DC/DC converter IC902 IC Voltage regulator (50C) IC903 IC Voltage regulator (33C) Q503 Transistor Ripple ﬁlter Q504 FET Buffer AMP Q507 Transistor Ripple ﬁlter Q508,509 FET VCO oscillation Q510,511 FET T/R switch Q512,600 Transistor Buffer AMP Q601 Transistor RF AMP Q602 FET Pre-drive AMP Q603 FET Drive AMP Q604 Transistor APC switch Q605 FET APC switch Q606 FET RF ﬁnal 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 ﬁlter 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 ﬁlter D505 Diode Bypass diode

Ref. No. Part Name Description

D506,507, D510,511

D514~517

D518 Diode Ripple ﬁlter

D519

D600,601 Diode Local switch D604 Zener diode APC switch D605 Zener diode APC protect D606,607 Diode Antenna switch D608,611 Diode APC switch D700 Diode Ripple ﬁlter

D702~704

D705 Diode RF AGC

D706,708

D709 Diode Antenna switch

D710

D711 Diode Antenna switch D881,882 Zener diode D900 LED TX/RX LED D901 Diode Reverse protection D902 Diode 50T control D902 Diode 50T control

Variable capacitance diode

Frequency control

TX modulation

Vari-cap tune

Sub (GPS) unit (X58-5240-10)

Ref. No. Part Name Description

IC1

IC2 IC Buffer IC4 IC Voltage regulator D2 Diode Backﬂow prevention

Electric circuit module

GPS receiver module

20

PARTS LISTPARTS LIST

NX-300(G)

indicates safety critical components.

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

Ref. No. Address Parts No. Description

NX-300 (G)

1 1B A02-4002-23 PLASTIC CABINET (6KEY) K,K2 2 1A A02-4003-23 PLASTIC CABINET (18KEY) K3,K4 3 3A A10-4186-04 CHASSIS 4 2B A62-1156-02 PANEL (TOP) 6 1B,1D B09-0712-03 CAP ACCESSORY

7 1A B11-1853-34 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 B42-7417-04 STICKER (NEXEDGE)

12 1B B43-1606-14 BADGE 13 2D B62-2608-00 INSTRUCTION MANUAL 15 2B D32-0446-14 STOPPER (16CH) 17 2A E29-1241-04 RELAY HARDWARE (X57 PCB) K2,K4 18 2A E29-1241-04 RELAY HARDWARE (VCO-PCB)

19 3A E29-1242-04 20 2A E37-1718-05 21 3B E58-0532-05 22 3B E72-0425-13 TERMINAL BLOCK 24 3A F07-1959-14 COVER(OP BOARD)

25 2A F10-3162-13 SHIELDING CASE ASSY 27 2A G02-1865-13 EARTH SPRING(SP) 28 2A G10-1362-04 FIBROUS SHEET(GPS) 29 1A G10-1373-04 FIBROUS SHEET(SP) 30 2B G10-1807-04 FIBROUS SHEET(TOP PANEL)

31 2A G11-4272-14 RUBBER CUSHION(SP) 32 3A G11-4428-04 SHEET(PTT) 33 3A G11-4429-04 RUBBER SHEET(FET) 34 3A G11-4440-04 SHEET(AIR) 35 2A G11-4458-14 SHEET(SP)

36 2A G11-4459-04 SHEET(TX-RX PCB) 37 1A G11-4497-04 SHEET(LCD) 38 3A G11-4500-04 SHEET(AIR) 39 2A G11-4501-04 SHEET(ECM) 40 1B G11-4540-04 SHEET(M-CABINET)

41 2A G13-1856-04 CUSHION(GPS) 42 2A,3A G13-2220-04 CUSHION(ANT OP BOARD) 43 2A G13-2292-04 CUSHION(TX-RX PCB) 44 2A G13-2293-04 CUSHION(50PINFPC) 45 2A G13-2294-04 CUSHION(TERMINAL)

46 3B G53-1762-02 PACKING (TOP) 47 3B G53-1763-03 PACKING (TERMINAL BLOCK) 48 3A G53-1764-03 PACKING (OP BOARD) 49 1B G53-1765-11 PACKING (6KEY) K,K2 50 1A G53-1766-11 PACKING (18KEY) K3,K4

51 2B G53-1768-04 52 1B,1D G53-1769-04 PACKING(CAP) 53 2B G53-1792-04 PACKING (SMA O-RING) 55 1D,2D H12-4293-02 PACKING FIXTURE 56 2D H13-2135-04 CARTON BOARD

57 3C H52-2619-02 ITEM CARTON CASE 58 2A J19-5505-11 HOLDER(FG-SP) 59 2B J19-5506-03 HOLDER (VOL,SELECTOR) 60 2A J19-5507-02 HOLDER (OP BOARD)

RELAY HARDWARE (VCO-CHASSIS) LEAD WIRE WITH CONNECTOR (GPS) RECTANGULAR RECEPTACLE (SP/MIC)

PACKING (VOL,SELECTOR O-RING)

Destination

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

CONTROL UNIT (XC1-0020-XX)

Ref. No. Address Parts No. Description

61 2B J21-8638-14 62 1C J29-0730-05 BELT CLIP ACCESSORY 63 2B J30-1296-04 SPACER(VOL) 64 3B J87-0007-25 FPC(UNIVERSAL) 65 2B J87-0028-05 FPC (VOL,SELECTOR)

66 3A J99-0711-04 ADHESIVE SHEET(PTT FPC) 67 2B J99-0712-14 ADHESIVE SHEET(6KEY FPC) 68 1A,2A J99-0714-04 ADHESIVE SHEET(LCD) 69 2A J99-0714-04 ADHESIVE SHEET(X57 PCB) K2,K4 70 3B J99-0715-08 ADHESIVE SHEET(UNIVERSAL)

71 2B J99-0745-04 ADHESIVE SHEET(6KEY FPC) 72 3B J99-0747-04 ADHESIVE SHEET(T-BLOCK) 74 3A K25-2001-03 PUSH KNOB(PTT) 75 1A K29-9405-03 KNOB (PTT) 76 1A K29-9406-03 BUTTON KNOB(SIDE KEY)

77 1B K29-9407-03 KNOB (VOL) 78 1B K29-9408-13 KNOB (SELECTOR) A 1B,1D N08-0564-04 B 3B N0Z-0001-00 HEXAGON HEAD SCREW C 3A N09-2440-15 SPECIAL SCREW (CASE)

D 2A,2B N09-6549-04 E 2B,3A N09-6554-05 F 1C N09-6585-15 G 2B N14-0844-04 CIRCULAR NUT(VOL,SW) H 1A,2A,2B N83-2005-48

S1 S60-0437-05 ROTARY SWITCH 80 1A S79-0472-05 KEYBOARD ASSY(12KEY) K3,K4 82 2A T07-0755-25 SPEAKER 83 2A T91-0575-05 MIC ELEMENT 85 2A W09-0971-05 LITHIUM CELL

VR1 2B R31-0666-05 VARIABLE RESISTOR(VOL) 87 3A X41-3830-10 SWITCH UNIT (PTT FPC) 88 2B X41-3840-10 SWITCH UNIT (6KEY FPC) 89 2A X42-3510-10 CORD ASSY (50PIN FPC) 90 2B X60-4080-10 TERMINAL ASSY

- XC1-0020-12 SERVICE CONTROL UNIT(6KEY) K,K2

- XC1-0020-13

MOUNTING HARDWARE (FG-SP HOLDER)

DRESSED SCREW ACCESSORY

STEPPED SCREW (FG-SP HOLDER) PAN HEAD SCREW (ANT/OP BOARD) CIRCULAR NUT (VOL,SELECTOR)

PAN HEAD TAPTITE SCREW (PCB)

SERVICE CONTROL UNIT(18KEY)

NX-300 (G)

Destination

K3,K4

CONTROL UNIT (XC1-0020-XX) -10: K,K2 -11: K3,K4

C1 CK73HB1A104K CHIP C 0.10UF K C2 CK73GB1E105K CHIP C 1.0UF K C3 CK73GB1E105K CHIP C 1.0UF K C4 CK73GB1E105K CHIP C 1.0UF K C5 CK73GB1E105K CHIP C 1.0UF K

C6 CK73GB1E105K CHIP C 1.0UF K C7 CK73HB1A104K CHIP C 0.10UF K C8 CK73HB1A104K CHIP C 0.10UF K C10 CK73HB1A104K CHIP C 0.10UF K C11 CK73HB0J105K CHIP C 1.0UF K

C12 CK73HB1H471K CHIP C 470PF K C13 CK73HB1H471K CHIP C 470PF K C14 CK73HB1H471K CHIP C 470PF K C15 CK73HB1H471K CHIP C 470PF K C16 CC73HCH1H101J CHIP C 100PF J

21

NX-300(G)

CONTROL UNIT (XC1-0020-XX)

Ref. No. Address Parts No. Description

C17 CC73HCH1H101J CHIP C 100PF J C23 CK73HB1H102K CHIP C 1000PF K C24 CC73HCH1H470J CHIP C 47PF J C25 CK73HB1H102K CHIP C 1000PF K C26 CK73HB1H102K CHIP C 1000PF K

PARTS LIST

Destination

Ref. No. Address Parts No. Description

C152 CK73HB1A104K CHIP C 0.10UF K C153 CK73HB1A104K CHIP C 0.10UF K C154 CK73HB1A104K CHIP C 0.10UF K C155 CK73HB1A104K CHIP C 0.10UF K C156 CK73HB1H102K CHIP C 1000PF K

Destination

C27 CK73HB1H102K CHIP C 1000PF K C28 CC73HCH1H101J CHIP C 100PF J C29 CC73HCH1H101J CHIP C 100PF J C30 CC73HCH1H101J CHIP C 100PF J C31 CC73HCH1H101J CHIP C 100PF J

C32 CC73HCH1H101J CHIP C 100PF J C33 CC73HCH1H101J CHIP C 100PF J C34 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 C40 CC73HCH1H221J CHIP C 220PF J C41 CC73HCH1H101J CHIP C 100PF J C101 CK73HB1E104K CHIP C 0.10UF K

C102 CK73GB0J106K CHIP C 10UF K C103 CK73HB1E104K CHIP C 0.10UF K C104 CK73HB1E104K CHIP C 0.10UF K C105 CK73HB0J105K CHIP C 1.0UF K C106 CK73HB1E103K CHIP C 0.010UF K

C107 CK73HB1E104K CHIP C 0.10UF K C108 CK73HB1A104K CHIP C 0.10UF K K3,K4 C109 CK73HB1H102K CHIP C 1000PF K C110 CK73HB1H102K CHIP C 1000PF K C111 CK73GB0J106K CHIP C 10UF K

C112 CK73GB0J106K CHIP C 10UF K C113 CK73HB1E104K CHIP C 0.10UF K K3,K4 C114 CK73HB0J105K CHIP C 1.0UF K K3,K4 C115 CK73HB1H471K CHIP C 470PF K C116 CK73HB1E104K CHIP C 0.10UF K

C157 CK73HB1H102K CHIP C 1000PF K C158 CK73HB1E103K CHIP C 0.010UF K C159 CK73HB1A104K CHIP C 0.10UF K C160 CK73HB1E682K CHIP C 6800PF K C161 CK73HB1E682K CHIP C 6800PF K

C162 CK73HB1E103K CHIP C 0.010UF K C163 CK73HB1A105K CHIP C 1.0UF K C164 CK73HB1E104K CHIP C 0.10UF K C166 CK73HB1E104K CHIP C 0.10UF K C167 CK73HB1E104K CHIP C 0.10UF K

C401 CK73HB1A104K CHIP C 0.10UF K C402 CK73HB1A104K CHIP C 0.10UF K C403 CS77MP1C2R2M CHIP TNTL 2.2UF 16WV C404 CS77MP1C2R2M CHIP TNTL 2.2UF 16WV C405 CS77MP1C2R2M CHIP TNTL 2.2UF 16WV

C406 CK73HB0J105K CHIP C 1.0UF K C407 CK73HB1H102K CHIP C 1000PF K C408 CK73HB1H102K CHIP C 1000PF K C409 CK73HB0J105K CHIP C 1.0UF K C411 CK73HB0J105K CHIP C 1.0UF K

C412 CK73HB0J105K CHIP C 1.0UF K C414 CK73HB0J105K CHIP C 1.0UF K C415 CS77BP1A100M 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

C117 CK73HB1E104K CHIP C 0.10UF K C118 CK73HB0J105K CHIP C 1.0UF K C120 CK73HB1E104K CHIP C 0.10UF K C122 CK73HB1E103K CHIP C 0.010UF K C124 CK73HB1E103K CHIP C 0.010UF K

C130 CK73HB1E103K CHIP C 0.010UF K C131 CK73HB1A104K CHIP C 0.10UF K C133 CS77MP0J100M CHIP TNTL 10UF 6.3WV C135 CK73HB1H102K CHIP C 1000PF K C136 CK73HB1E103K CHIP C 0.010UF K

C137 CK73GB1E105K CHIP C 1.0UF K C138 CK73HB1A104K CHIP C 0.10UF K C139 CK73HB1A104K CHIP C 0.10UF K C140 CK73HB1A104K CHIP C 0.10UF K C141 CC73HCH1H101J CHIP C 100PF J

C142 CS77MP0J100M CHIP TNTL 10UF 6.3WV C143 CK73HB1E103K CHIP C 0.010UF K C144 CK73GB1E105K CHIP C 1.0UF K C145 CK73HB1A104K CHIP C 0.10UF K C146 CK73HB1A104K CHIP C 0.10UF K

C147 CK73HB1A104K CHIP C 0.10UF K C148 CK73HB1A104K CHIP C 0.10UF K C149 CK73HB1E103K CHIP C 0.010UF K C150 CK73GB1E105K CHIP C 1.0UF K C151 CK73HB1A104K CHIP C 0.10UF K

22

C424 CK73HB1A104K CHIP C 0.10UF K C425 CK73HB1A104K CHIP C 0.10UF K C427 CK73HB1E103K CHIP C 0.010UF K C428 CC73HCH1H030C CHIP C 3.0PF C C429 CK73HB1A104K CHIP C 0.10UF K

C430 CK73HB1A104K CHIP C 0.10UF K C431 CK73FB1A106K CHIP C 10UF K C433 CK73FB1A106K CHIP C 10UF K C435 CK73HB1A563K CHIP C 0.056UF K C436 CK73HB1A563K CHIP C 0.056UF K

C437 CK73HB1A563K CHIP C 0.056UF K C438 CK73HB1A563K CHIP C 0.056UF K C439 CK73HB1A104K CHIP C 0.10UF K C440 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 C447 CK73HB1H102K CHIP C 1000PF K

C448 CK73HB0J105K CHIP C 1.0UF K C449 CK73HB0J105K CHIP C 1.0UF K C450 CK73HB0J105K CHIP C 1.0UF K C452 CK73HB1E103K CHIP C 0.010UF K C453 CK73HB1E103K CHIP C 0.010UF K

Ref. No. Address Parts No. Description

C454 CK73GB1E105K CHIP C 1.0UF K C455 CK73HB1H471K CHIP C 470PF K C456 CK73HB1H471K CHIP C 470PF K C457 CK73HB1H471K CHIP C 470PF K C459 CK73HB1H471K CHIP C 470PF K

PARTS LIST

Destination

Ref. No. Address Parts No. Description

C750 CC73HCH1H470J CHIP C 47PF J C751 CK73GB1E105K CHIP C 1.0UF K C752 CC73HCH1H101J CHIP C 100PF J C753 CC73HCH1H101J CHIP C 100PF J C755 CC73HCH1H470J CHIP C 47PF J

NX-300(G)

CONTROL UNIT (XC1-0020-XX)

Destination

C460 CK73HB1E682K CHIP C 6800PF K C461 CK73HB1H471K CHIP C 470PF K C462 CK73HB1H471K CHIP C 470PF K C463 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 CK73HB1A104K CHIP C 0.10UF K C468 CK73HB1A104K CHIP C 0.10UF K C469 CK73HB1H102K CHIP C 1000PF K

C470 CK73HB1H102K CHIP C 1000PF K C471 CK73HB1C473K CHIP C 0.047UF K C480 CK73HB1E103K CHIP C 0.010UF K C701 CK73HB1A104K CHIP C 0.10UF K C703 CK73GB0J475K CHIP C 4.7UF K

C704 CK73HB1A104K CHIP C 0.10UF K C705 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

C756 CK73HB1A104K CHIP C 0.10UF K C757 CK73GB0J475K CHIP C 4.7UF K C758 CK73GB0J475K CHIP C 4.7UF K C759 CK73HB1E103K CHIP C 0.010UF K C760 CK73HB1E103K CHIP C 0.010UF K

C761 CC73HCH1H100D CHIP C 10PF D C762 CK73HB1A104K CHIP C 0.10UF K C763 CK73HB1E103K CHIP C 0.010UF K C764 CK73HB1H102K CHIP C 1000PF K C765 CK73HB1A104K CHIP C 0.10UF K

C766 CK73HB1A104K CHIP C 0.10UF K C767 CK73HB1A104K CHIP C 0.10UF K C768 CK73HB1H102K CHIP C 1000PF K C771 CK73HB1A224K CHIP C 0.22UF K C772 CK73HB1E103K CHIP C 0.010UF K

C775 CC73HCH1H470J CHIP C 47PF J C778 CK73HB0J105K CHIP C 1.0UF K C779 CK73HB1E103K CHIP C 0.010UF K C780 CK73HB1A224K CHIP C 0.22UF K C781 CK73HB0J105K CHIP C 1.0UF K

C782 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 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 C724 CK73HB1E103K CHIP C 0.010UF K

C725 CC73HCH1E181J CHIP C 180PF J C726 CK73HB1A104K CHIP C 0.10UF K C727 CK73HB1A104K CHIP C 0.10UF K C728 CK73HB1H331K CHIP C 330PF K C730 CK73HB1H331K CHIP C 330PF K

C731 CK73HB1E103K CHIP C 0.010UF K C732 CK73HB1E103K CHIP C 0.010UF K C735 CK73HB1H122K CHIP C 1200PF K C736 CK73HB1A104K CHIP C 0.10UF K C737 CK73HB1A104K CHIP C 0.10UF 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 CK73HB1E103K CHIP C 0.010UF K

C745 CK73HB1E103K CHIP C 0.010UF K C746 CK73HB1E103K CHIP C 0.010UF K C747 CK73HB1A104K CHIP C 0.10UF K C748 CK73HB1A104K CHIP C 0.10UF K C749 CC73HCH1H470J CHIP C 47PF J

C794 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 CS77BP1A100M 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 CK73HB1H471K CHIP C 470PF K C806 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 C819 CK73HB1E104K CHIP C 0.10UF K C820 CK73HB1E104K CHIP C 0.10UF K C821 CC73HCH1H101J CHIP C 100PF J C822 CK73GB0J106K CHIP C 10UF K

C830 CK73HB1H102K CHIP C 1000PF K CN1 E40-6755-05 FLAT CABLE CONNECTOR CN22 E23-1325-05 TERMINAL CN23 E40-6758-05 PIN ASSY CN24 E23-1325-05 TERMINAL

23

NX-300(G)

CONTROL UNIT (XC1-0020-XX)

Ref. No. Address Parts No. Description

CN401 J19-5386-05 HOLDER (LITHIUM CELL) 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(20P)

PARTS LIST

Destination

Ref. No. Address Parts No. Description

IC106 R2023T MOS-IC IC107 SM5023CNDH-G MOS IC IC108 Note 1 MOS-IC IC109 TC7SH08FU-F MOS-IC IC110 TC7SH08FU-F MOS-IC

Destination

CN710 E40-6757-05 PIN ASSY D1 B30-2337-05 LED(YELLOW) D2 B30-2337-05 LED(YELLOW) D3 B30-2337-05 LED(YELLOW) D4 B30-2337-05 LED(YELLOW)

D5 B30-2337-05 LED(YELLOW) D6 B30-2337-05 LED(YELLOW) D7 B30-2337-05 LED(YELLOW) D8 B30-2337-05 LED(YELLOW) D9 B30-2337-05 LED(YELLOW)

D10 B30-2337-05 LED(YELLOW) D11 DA2S101 DIODE D12 KDR720F-P DIODE D13 KDR720F-P DIODE D14 KDR720F-P DIODE

D15 KDR720F-P DIODE D16 KDR720F-P DIODE D17 EMZ6.8N ZENER DIODE D18 HZC6.8-E ZENER DIODE D19 HZC6.8-E ZENER DIODE

D20 NNCD6.8G-A ZENER DIODE D21 NNCD6.8G-A ZENER DIODE D22 KDS123E-P DIODE D23 KDS123E-P DIODE D101 DA2S101 DIODE

D102 KDR720F-P DIODE D401 1SS388F DIODE D402 1SS388F DIODE D403 1SS388F DIODE D404 1SS388F DIODE

IC401 TC74LCX245FK MOS-IC IC402 TC7WZ245FK-F MOS-IC IC403 LM2682MMX MOS-IC IC404 XC6204B332D-G MOS-IC IC406 XC6204B332M-G MOS-IC

IC407 LT1616ES6-PBF ANALOGUE IC IC408 BU7465HFV MOS-IC IC409 TC7W66FK-F MOS-IC IC411 NJM2880U105ZB ANALOGUE IC IC412 TPA6201A1DRBR ANALOGUE IC

IC413 TPA6201A1DRBR ANALOGUE IC IC414 XC61CC5602N-G MOS IC IC415 TC7SET08FU-F MOS-IC IC416 S-812C31BPI-G ANALOGUE IC IC417 TC7WH126FK MOS-IC

IC418 TC7WT125FUF MOS IC IC701 PCA9535BS MOS-IC IC702 BU7242NUX MOS-IC IC703 M62364FP-F MOS-IC IC704 BU7465HFV MOS-IC

IC705 BU7242NUX MOS-IC IC706 BU7465HFV MOS-IC IC707 TC7W53FK(F) MOS-IC IC708 XC6209B502P-G MOS IC IC709 TC7W53FK(F) MOS-IC

IC710 BU7242NUX MOS-IC IC711 BU7242NUX MOS-IC IC712 TC7S66FUF MOS-IC IC713 BU7242NUX MOS-IC IC714 TC7W53FK(F) MOS-IC

D405 1SS388F DIODE D406 HRB0502A DIODE D407 DA2S101 DIODE D408 KDS121-P DIODE D409 DA2S101 DIODE

D410 DA2S101 DIODE D411 KDR720F-P DIODE D412 KDS121-P DIODE D413 1SS388F DIODE D414 KDR720F-P DIODE

D415 KDR720F-P DIODE D416 1SS388F DIODE D417 1SS388F DIODE D701 KDS121-P DIODE D702 DA2S101 DIODE

D703 KDR731 DIODE D704 KDR731 DIODE D705 KDR731 DIODE D706 KDR731 DIODE D707 KDS123E-P DIODE

F701 F53-0360-05 FUSE(0.25A) IC1 NJM2130F3-ZB BI-POLAR IC IC101 Note 1 ROM IC IC103 Note 1 SRAM IC IC105 XC6109C29AN-G MOS-IC

24

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

IC715 BU7465HFV MOS-IC IC716 BU7242NUX MOS-IC IC717 XC9235A15CM-G MOS IC IC719 Note1 MICROPROCESSOR IC L1 L92-0408-05 CHIP FERRITE

L2 L92-0408-05 CHIP FERRITE L3 L92-0140-05 CHIP FERRITE L4 L92-0408-05 CHIP FERRITE L5 L92-0408-05 CHIP FERRITE L6 L92-0408-05 CHIP FERRITE

L7 L92-0408-05 CHIP FERRITE L8 L92-0140-05 CHIP FERRITE L9 L92-0162-05 BEADS CORE L101 L92-0408-05 CHIP FERRITE L102 L92-0408-05 CHIP FERRITE

L401 L33-1496-05 SMALL FIXED INDUCTOR (22UH) L402 L92-0467-05 CHIP FERRITE L403 L92-0466-05 CHIP FERRITE L409 L92-0467-05 CHIP FERRITE L410 L92-0467-05 CHIP FERRITE

L411 L92-0467-05 CHIP FERRITE L701 L92-0140-05 CHIP FERRITE L702 L92-0162-05 BEADS CORE L704 L92-0162-05 BEADS CORE L705 L92-0162-05 BEADS CORE

Ref. No. Address Parts No. Description

L706 L92-0162-05 BEADS CORE L707 L92-0162-05 BEADS CORE L708 L92-0162-05 BEADS CORE L710 L92-0444-05 CHIP FERRITE L711 L92-0444-05 CHIP FERRITE

PARTS LIST

Destination

Ref. No. Address Parts No. Description

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 RK73HB1J102J CHIP R 1.0K J 1/16W

NX-300(G)

CONTROL UNIT (XC1-0020-XX)

Destination

L712 L92-0444-05 CHIP FERRITE L713 L92-0163-05 BEADS CORE L714 L92-0444-05 CHIP FERRITE L715 L92-0444-05 CHIP FERRITE L716 L92-0444-05 CHIP FERRITE

L717 L92-0444-05 CHIP FERRITE L718 L92-0408-05 CHIP FERRITE L719 L33-1494-05 L720 L92-0162-05 BEADS CORE Q1 2SA1362-F(GR) TRANSISTOR

Q2 KTC4075E(Y,GR) TRANSISTOR Q3 SSM3K15AMFVF FET Q4 SSM3K15AMFVF FET Q5 2SJ347F FET Q101 2SA1832(GR)F TRANSISTOR K3,K4

Q102 KTC4075E(Y,GR) TRANSISTOR Q103 SSM3K15AMFVF FET Q401 SSM6N16FE-F FET Q402 SSM6N16FE-F FET Q403 2SJ648-A FET

Q404 SSM3K15AMFVF FET Q405 SSM6N16FE-F FET Q406 2SB798AZ(DLDK TRANSISTOR Q407 KRC660U-P DIGITAL TRANSISTOR Q408 EMD12 TRANSISTOR

Q409 2SA1955A-F TRANSISTOR Q410 SSM3K15AMFVF FET Q411 SSM6N16FE-F FET Q412 SSM3K15AMFVF FET Q413 2SA1955A-F TRANSISTOR

SMALL FIXED INDUCTOR (4.7UH)

R23 RK73HB1J102J CHIP R 1.0K J 1/16W R24 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 RK73HB1J102J CHIP R 1.0K J 1/16W R29 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 RK73HB1J101J CHIP R 100 J 1/16W

R33 RK73HB1J101J CHIP R 100 J 1/16W R34 RK73HB1J101J CHIP R 100 J 1/16W R35 RK73HB1J101J CHIP R 100 J 1/16W R40 RK73HB1J000J CHIP R 0.0 J 1/16W R101 RK73HB1J474J CHIP R 470K J 1/16W

R102 RK73HB1J000J CHIP R 0.0 J 1/16W R103 RK73HB1J102J CHIP R 1.0K J 1/16W R104 RK73HB1J473J CHIP R 47K 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 R112 RK73HB1J000J CHIP R 0.0 J 1/16W K3,K4 R114 RK73HB1J331J CHIP R 330 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 R120 RK73HB1J474J CHIP R 470K J 1/16W R121 RK73HB1J104J CHIP R 100K J 1/16W R123 RK73HB1J101J CHIP R 100 J 1/16W R124 RK73HB1J101J CHIP R 100 J 1/16W

Q414 EMD12 TRANSISTOR Q415 EMD12 TRANSISTOR Q702 SSM3K15AMFVF FET Q703 SSM3K15AMFVF FET Q704 KTC4075E(Y,GR) TRANSISTOR

Q705 2SC4738(GR)F TRANSISTOR Q706 2SA1832(GR)F TRANSISTOR K3,K4 Q707 2SJ648-A FET Q708 SSM3K15AMFVF FET 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 RK73HB1J103J CHIP R 10K J 1/16W R5 RK73HB1J103J CHIP R 10K J 1/16W R6 RK73HB1J103J CHIP R 10K J 1/16W

R7 RK73HB1J103J CHIP R 10K J 1/16W R8 RK73HB1J103J CHIP R 10K J 1/16W R9 RK73HB1J103J CHIP R 10K J 1/16W R10 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

R125 RK73HB1J101J CHIP R 100 J 1/16W R126 RK73HB1J101J CHIP R 100 J 1/16W R127 RK73HB1J104J CHIP R 100K J 1/16W R130 RK73HB1J101J CHIP R 100 J 1/16W R131 RK73HB1J104J CHIP R 100K J 1/16W

R135 RK73HB1J103J CHIP R 10K J 1/16W R136 RK73HB1J104J CHIP R 100K J 1/16W R137 RK73HB1J104J CHIP R 100K J 1/16W R138 RK73HB1J473J CHIP R 47K J 1/16W R141 RK73HB1J104J CHIP R 100K J 1/16W

R142 RK73HB1J104J CHIP R 100K J 1/16W R143 RK73HB1J104J CHIP R 100K J 1/16W R144 RK73HB1J471J CHIP R 470 J 1/16W R145 RK73HB1J104J CHIP R 100K J 1/16W R147 RK73HB1J104J CHIP R 100K J 1/16W

R149 RK73HB1J000J CHIP R 0.0 J 1/16W R150 RK73HB1J102J CHIP R 1.0K J 1/16W R153 RK73HB1J104J CHIP R 100K J 1/16W R154 RK73HB1J104J CHIP R 100K J 1/16W R155 RK73HB1J473J CHIP R 47K J 1/16W

R156 RK73HB1J472J CHIP R 4.7K J 1/16W R157 RK73HB1J472J CHIP R 4.7K J 1/16W R158 RK73HB1J220J CHIP R 22 J 1/16W R159 RK73HB1J220J CHIP R 22 J 1/16W R160 RK73HB1J000J CHIP R 0.0 J 1/16W

25

NX-300(G)

CONTROL UNIT (XC1-0020-XX)

Ref. No. Address Parts No. Description

R161 RK73HB1J000J CHIP R 0.0 J 1/16W R162 RK73HB1J474J CHIP R 470K J 1/16W R163 RK73HH1J104D CHIP R 100K D 1/16W R164 RK73HB1J104J CHIP R 100K J 1/16W R165 RK73HB1J223J CHIP R 22K J 1/16W

PARTS LIST

Destination

Ref. No. Address Parts No. Description

R434 RK73HB1J393J CHIP R 39K J 1/16W R435 RK73HB1J104J CHIP R 100K J 1/16W R436 RK73HB1J104J CHIP R 100K J 1/16W R437 RK73HB1J471J CHIP R 470 J 1/16W R438 RK73HB1J104J CHIP R 100K J 1/16W

Destination

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 RK73HB1J000J CHIP R 0.0 J 1/16W R172 RK73HB1J000J CHIP R 0.0 J 1/16W

R173 RK73HB1J000J CHIP R 0.0 J 1/16W R174 RK73HB1J104J CHIP R 100K J 1/16W R175 RK73HB1J104J CHIP R 100K J 1/16W R176 RK73HB1J104J CHIP R 100K J 1/16W R177 RK73HB1J104J CHIP R 100K J 1/16W

R178 RK73HB1J104J CHIP R 100K J 1/16W R180 RK73HB1J104J CHIP R 100K J 1/16W R181 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 R187 RK73HB1J102J CHIP R 1.0K 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 RK73HB1J104J CHIP R 100K J 1/16W R194 RK73HB1J104J CHIP R 100K J 1/16W R195 RK73HB1J473J CHIP R 47K J 1/16W

R196 RK73HB1J473J CHIP R 47K 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

R439 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 RK73HB1J474J CHIP R 470K J 1/16W R450 RK73HB1J474J CHIP R 470K J 1/16W R451 RK73HB1J474J CHIP R 470K J 1/16W R452 RK73HB1J474J CHIP R 470K J 1/16W 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 RK73HB1J104J CHIP R 100K J 1/16W R458 RK73HB1J104J CHIP R 100K J 1/16W

R459 RK73HB1J102J CHIP R 1.0K J 1/16W R460 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

R465 RK73HB1J103J CHIP R 10K J 1/16W R466 RK73HB1J104J CHIP R 100K 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

R405 RK73HB1J152J CHIP R 1.5K J 1/16W K3,K4 R406 RK73HB1J000J CHIP R 0.0 J 1/16W R407 RK73HB1J103J CHIP R 10K J 1/16W R408 RK73HB1J103J CHIP R 10K J 1/16W R409 RK73HB1J470J CHIP R 47 J 1/16W

R410 RK73HB1J471J CHIP R 470 J 1/16W R411 RK73HB1J471J CHIP R 470 J 1/16W R412 RK73HB1J471J CHIP R 470 J 1/16W R413 RK73HB1J471J CHIP R 470 J 1/16W R414 RK73HB1J471J CHIP R 470 J 1/16W

R415 RK73HB1J471J CHIP R 470 J 1/16W R416 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 RK73HB1J000J CHIP R 0.0 J 1/16W

R420 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 RK73HB1J000J CHIP R 0.0 J 1/16W R427 RK73HB1J000J CHIP R 0.0 J 1/16W

R428 RK73HB1J000J CHIP R 0.0 J 1/16W R429 RK73HB1J000J CHIP R 0.0 J 1/16W R431 RK73HB1J474J CHIP R 470K J 1/16W R432 RK73HB1J000J CHIP R 0.0 J 1/16W R433 RK73HB1J000J CHIP R 0.0 J 1/16W

26

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 RK73HB1J333J CHIP R 33K J 1/16W

R475 RK73HB1J333J CHIP R 33K J 1/16W R477 RK73HB1J000J CHIP R 0.0 J 1/16W R478 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 RK73HH1J223D CHIP R 22K D 1/16W R488 RK73HH1J223D CHIP R 22K D 1/16W

R489 RK73HH1J223D CHIP R 22K D 1/16W R490 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 RK73HH1J104D CHIP R 100K D 1/16W R495 RK73HH1J104D CHIP R 100K D 1/16W R496 RK73HH1J104D CHIP R 100K D 1/16W R497 RK73HH1J104D CHIP R 100K D 1/16W R500 RK73HB1J473J CHIP R 47K J 1/16W

PARTS LIST

Ref. No. Address Parts No. Description

R501 RK73HB1J222J CHIP R 2.2K J 1/16W R502 RK73HB1J103J CHIP R 10K J 1/16W K,K3 R503 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

Destination

NX-300(G)

CONTROL UNIT (XC1-0020-XX)

Ref. No. Address Parts No. Description

R713 RK73HB1J000J CHIP R 0.0 J 1/16W R714 RK73HB1J000J CHIP R 0.0 J 1/16W R715 RK73HB1J000J CHIP R 0.0 J 1/16W R716 RK73GB2A000J CHIP R 0.0 J 1/10W R717 RK73HB1J104J CHIP R 100K J 1/16W

Destination

R507 RK73HB1J102J CHIP R 1.0K J 1/16W R508 RK73HB1J102J CHIP R 1.0K J 1/16W R509 RK73HB1J102J CHIP R 1.0K J 1/16W R510 RK73HB1J102J CHIP R 1.0K J 1/16W R511 RK73HB1J102J CHIP R 1.0K J 1/16W

R512 RK73HB1J101J CHIP R 100 J 1/16W R513 RK73HB1J102J CHIP R 1.0K J 1/16W R514 RK73HB1J102J CHIP R 1.0K J 1/16W R515 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 RK73HB1J102J CHIP R 1.0K J 1/16W R520 RK73HB1J102J CHIP R 1.0K J 1/16W R521 RK73HB1J102J CHIP R 1.0K J 1/16W

R522 RK73HB1J102J CHIP R 1.0K J 1/16W R523 RK73HB1J102J CHIP R 1.0K J 1/16W R524 RK73HB1J102J CHIP R 1.0K J 1/16W R525 RK73HB1J102J CHIP R 1.0K J 1/16W R526 RK73HB1J102J CHIP R 1.0K J 1/16W

R527 RK73HB1J102J CHIP R 1.0K J 1/16W R528 RK73HB1J102J CHIP R 1.0K J 1/16W R529 RK73HB1J101J CHIP R 100 J 1/16W R530 RK73HB1J101J CHIP R 100 J 1/16W R531 RK73HB1J101J CHIP R 100 J 1/16W

R532 RK73HB1J102J CHIP R 1.0K J 1/16W R533 RK73HB1J101J CHIP R 100 J 1/16W R534 RK73HB1J101J CHIP R 100 J 1/16W R535 RK73HB1J101J CHIP R 100 J 1/16W R536 RK73HB1J102J CHIP R 1.0K J 1/16W

R718 RK73HB1J104J CHIP R 100K J 1/16W R719 RK73HB1J104J CHIP R 100K J 1/16W R720 RK73HB1J104J CHIP R 100K J 1/16W R721 RK73HB1J104J CHIP R 100K J 1/16W R722 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 R726 RK73HB1J104J CHIP R 100K J 1/16W R727 RK73HB1J105J CHIP R 1.0M J 1/16W

R728 RK73HB1J105J CHIP R 1.0M J 1/16W R729 RK73HB1J105J CHIP R 1.0M J 1/16W R730 RK73HB1J471J CHIP R 470 J 1/16W R731 RK73HB1J105J CHIP R 1.0M J 1/16W R732 RK73HB1J105J CHIP R 1.0M J 1/16W

R733 RK73HB1J473J CHIP R 47K J 1/16W 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 RK73HB1J103J CHIP R 10K J 1/16W R743 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 R748 RK73HB1J103J CHIP R 10K J 1/16W R749 RK73HB1J472J CHIP R 4.7K J 1/16W

R537 RK73HB1J102J CHIP R 1.0K J 1/16W R538 RK73HB1J102J CHIP R 1.0K J 1/16W R539 RK73HB1J102J CHIP R 1.0K J 1/16W R540 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 RK73HB1J102J CHIP R 1.0K J 1/16W R547 RK73HB1J102J CHIP R 1.0K J 1/16W

R548 RK73HB1J473J CHIP R 47K J 1/16W R549 RK73HB1J473J CHIP R 47K J 1/16W R550 RK73HB1J000J CHIP R 0.0 J 1/16W R551 RK73HB1J000J CHIP R 0.0 J 1/16W R701 RK73HB1J000J CHIP R 0.0 J 1/16W

R702 RK73HB1J000J CHIP R 0.0 J 1/16W R703 RK73HB1J000J CHIP R 0.0 J 1/16W R704 RK73HB1J000J CHIP R 0.0 J 1/16W R705 RK73HB1J000J CHIP R 0.0 J 1/16W R706 RK73HB1J000J CHIP R 0.0 J 1/16W

R707 RK73HB1J000J CHIP R 0.0 J 1/16W R709 RK73HB1J000J CHIP R 0.0 J 1/16W R710 RK73HB1J000J CHIP R 0.0 J 1/16W R711 RK73HB1J000J CHIP R 0.0 J 1/16W R712 RK73HB1J000J CHIP R 0.0 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 RK73HB1J223J CHIP R 22K J 1/16W

R762 RK73HB1J223J CHIP R 22K J 1/16W

R763 RK73HB1J223J CHIP R 22K J 1/16W

R764 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 RK73HB1J334J CHIP R 330K J 1/16W

R770 RK73HB1J334J CHIP R 330K J 1/16W

R771 RK73HB1J153J CHIP R 15K 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

27

NX-300(G)

CONTROL UNIT (XC1-0020-XX) TX-RX UNIT (XC1-0130-XX)

Ref. No. Address Parts No. Description

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

PARTS LIST

Destination

Ref. No. Address Parts No. Description

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

Destination

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

R803 RK73HB1J103J CHIP R 10K J 1/16W R804 RK73HB1J000J CHIP R 0.0 J 1/16W R805 RK73HB1J473J CHIP R 47K J 1/16W R806 RK73HB1J473J CHIP R 47K J 1/16W R807 RK73HB1J102J CHIP R 1.0K J 1/16W

R808 RK73HB1J471J CHIP R 470 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 RK73HB1J103J CHIP R 10K J 1/16W R820 RK73HB1J103J CHIP R 10K J 1/16W R821 RK73HB1J104J CHIP R 100K J 1/16W R822 RK73HB1J103J CHIP R 10K J 1/16W R823 RK73HB1J103J CHIP R 10K J 1/16W

R849 RK73HB1J000J CHIP R 0.0 J 1/16W K3,K4 R850 RK73HB1J000J CHIP R 0.0 J 1/16W K3,K4 R851 RK73HB1J683J CHIP R 68K J 1/16W R852 RK73HB1J683J CHIP R 68K J 1/16W R860 RK73HB1J000J CHIP R 0.0 J 1/16W

R863 RK73HB1J104J CHIP R 100K J 1/16W R864 RK73HB1J104J CHIP R 100K J 1/16W R867 RK73HB1J104J CHIP R 100K J 1/16W R868 RK73HB1J104J CHIP R 100K J 1/16W R869 RK73HB1J104J CHIP R 100K J 1/16W

R870 RK73HB1J104J CHIP R 100K J 1/16W R872 RK73HB1J104J CHIP R 100K J 1/16W R873 RK73HB1J104J CHIP R 100K J 1/16W R874 RK73HB1J104J CHIP R 100K J 1/16W R876 RK73HB1J103J CHIP R 10K J 1/16W

R877 RK73HB1J474J CHIP R 470K J 1/16W R888 RK73HB1J101J CHIP R 100 J 1/16W R889 RK73HB1J471J CHIP R 470 J 1/16W R890 RK73GB2A000J CHIP R 0.0 J 1/10W R891 RK73HB1J000J CHIP R 0.0 J 1/16W

TH1 ERTJ0EV104H THERMISTOR TH701 ERTJ0EV104H THERMISTOR X101 L77-1802-05 X102 L77-3015-05 TCXO(18.432M)

CRYSTAL RESONATOR(32768HZ)

TX-RX UNIT (XC1-0130-XX) -10: K,K3 -11: K2,K4

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

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 RK73HB1J000J CHIP R 0.0 J 1/16W

R829 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 R843 RK73HB1J102J CHIP R 1.0K J 1/16W

28

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 C512 CK73HB1C103K CHIP C 0.010UF K

C513 CC73HCH1H101J CHIP C 100PF J C514 CK73HB1C103K CHIP C 0.010UF K C515 CK73HB1C103K CHIP C 0.010UF K C516 CK73HB1C103K CHIP C 0.010UF K K,K3 C517 CC73HCH1H101J CHIP C 100PF J

C518 CC73HCH1H101J CHIP C 100PF J C519 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 CC73HCH1H101J CHIP C 100PF J C524 CC73HCH1H101J CHIP C 100PF J C525 CC73HCH1H470J CHIP C 47PF J C526 CK73HB1A104K CHIP C 0.10UF K C527 CC73HCH1H101J CHIP C 100PF J

PARTS LIST

Ref. No. Address Parts No. Description

C528 CC73HCH1H101J CHIP C 100PF J C529 CC73HCH1H101J CHIP C 100PF J K,K3 C530 CC73HCH1H101J CHIP C 100PF J C533 CK73HB1H471K CHIP C 470PF K C534 CC73HCH1H101J CHIP C 100PF J

Destination

NX-300(G)

TX-RX UNIT (XC1-0130-XX)

Ref. No. Address Parts No. Description

C603 CC73HCH1H100B CHIP C 10PF B K2,K4 C604 CK73HB1H471K CHIP C 470PF K C605 CK73HB1H471K CHIP C 470PF K C607 CC73HCH1H070B CHIP C 7.0PF B K,K3 C609 CC73GCH1H010B CHIP C 1.0PF B K2,K4

Destination

C535 CS77MA1VR15M 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 C93-1906-05 CHIP FILM 0.047U 35WV

C542 C93-0787-05 CHIP C 0.1UF J C543 CC73HCH1H030B CHIP C 3.0PF B K,K3 C543 CC73HCH1H040B CHIP C 4.0PF B K2,K4 C545 CK73HB1H471K CHIP C 470PF K C546 CK73HB1H472K CHIP C 4700PF K

C547 CC73HCH1H101J CHIP C 100PF J K,K3 C547 CK73HB1H471K CHIP C 470PF K K2,K4 C548 CC73HCH1H101J CHIP C 100PF J K2,K4 C550 CC73HCH1H050B CHIP C 5.0PF B K,K3 C553 CC73HCH1H050B CHIP C 5.0PF B K,K3

C553 CC73HCH1H100B CHIP C 10PF B K2,K4 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

C610 CK73HB1H471K CHIP C 470PF K C611 CK73HB1H471K CHIP C 470PF K C612 CK73HB1H471K CHIP C 470PF K C613 CC73HCH1H040B CHIP C 4.0PF B K2,K4 C613 CC73HCH1H070B CHIP C 7.0PF B K,K3

C614 CK73HB1H471K CHIP C 470PF K C615 CK73HB1H471K CHIP C 470PF K C617 CK73HB1H471K CHIP C 470PF K C618 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

C625 CK73HB1H471K CHIP C 470PF K C626 CK73HB1A104K CHIP C 0.10UF K C627 CC73HCH1H080B CHIP C 8.0PF B C628 CC73HCH1H100C CHIP C 10PF C C629 CK73HB1H471K CHIP C 470PF K

C630 CK73GB1E105K CHIP C 1.0UF K C631 CS77MA1A6R8M CHIP TNTL 6.8UF 10WV C632 CK73HB1H471K CHIP C 470PF K C634 CK73HB1H471K CHIP C 470PF K C635 CK73HB1H471K CHIP C 470PF K

C636 CK73HB1H471K CHIP C 470PF K C637 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

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 CC73HCH1H010B CHIP C 1.0PF B K,K3

C574 CC73HCH1H020B CHIP C 2.0PF B K2,K4 C575 CC73HCH1H030B CHIP C 3.0PF B K,K3 C575 CC73HCH1H060B CHIP C 6.0PF B K2,K4 C576 CC73HCH1H050B CHIP C 5.0PF B K,K3 C577 CK73HB1H471K CHIP C 470PF K

C578 CK73GB0J475K CHIP C 4.7UF K C579 CC73HCH1H050B CHIP C 5.0PF B K,K3 C580 CK73HB1H471K CHIP C 470PF K C581 CC73HCH1H0R5B CHIP C 0.5PF B K2,K4 C582 CK73HB1H471K CHIP C 470PF K

C583 CC73HCH1H0R5B CHIP C 0.5PF B K2,K4 C584 CK73HB1H471K CHIP C 470PF K C585 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 K2,K4 C600 CK73HB1A104K CHIP C 0.10UF K C601 CC73HCH1H101J CHIP C 100PF J C602 CK73HB1A104K CHIP C 0.10UF K

C641 CC73HCH1H100C CHIP C 10PF C C642 CC73HCH1H151J CHIP C 150PF J C643 CC73HCH1H151J CHIP C 150PF J C645 CK73GB1C104K CHIP C 0.10UF K C646 CK73GB1E105K CHIP C 1.0UF K

C647 C93-0943-05 CHIP C 22PF G K,K3 C648 CK73HB1C103K CHIP C 0.010UF K C649 CK73HB1C103K CHIP C 0.010UF K C651 CK73HB1H471K CHIP C 470PF K C653 CK73HB1H471K CHIP C 470PF K

C660 CC73GCH1H101J CHIP C 100PF J K2,K4 C660 CC73GCH1H470J CHIP C 47PF J K,K3 C661 CK73HB1H471K CHIP C 470PF K C662 CC73GCH1H010B CHIP C 1.0PF B K2,K4 C662 CC73GCH1H040B CHIP C 4.0PF B K2,K4

C663 CC73GCH1H101J CHIP C 100PF J C663 CC73GCH1H220J CHIP C 22PF J K,K3 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 CC73GCH1H020B CHIP C 2.0PF B K,K3 C667 CC73GCH1H2R5B CHIP C 2.5PF B K2,K4

29

NX-300(G)

PARTS LIST

TX-RX UNIT (XC1-0130-XX)

Ref. No. Address Parts No. Description

C668 CC73GCH1H080B CHIP C 8.0PF B K2,K4 C668 CC73GCH1H100C CHIP C 10PF C K2,K4 C669 CC73GCH1HR75B CHIP C 0.75PF B K,K3 C670 CK73HB1H471K CHIP C 470PF K C671 CC73HCH1H070B CHIP C 7.0PF B K,K3

Destination

Ref. No. Address Parts No. Description

C747 CC73HCH1H100B CHIP C 10PF B K2,K4 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

Destination

C671 CC73HCH1H100B CHIP C 10PF B K2,K4 C672 CK73HB1H471K CHIP C 470PF K C689 CK73HB1A104K CHIP C 0.10UF K C690 CK73HB1A104K CHIP C 0.10UF K C691 CK73HB1A104K CHIP C 0.10UF K

C692 C93-0949-05 CHIP C 39PF G K,K3 C692 C93-0951-05 CHIP C 47PF G K2,K4 C693 CK73GB1C224K CHIP C 0.22UF K C700 CC73HCH1H070B CHIP C 7.0PF B K,K3 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 K2,K4 C707 CC73HCH1H680J CHIP C 68PF J C708 CC73HCH1H101J CHIP C 100PF J C709 CK73HB1A104K CHIP C 0.10UF K C710 CK73HB1A104K CHIP C 0.10UF K

C711 CK73HB1A104K CHIP C 0.10UF K C712 CC73HCH1H680J CHIP C 68PF J C713 CK73FB1A106K CHIP C 10UF K C714 CK73GB1H102K CHIP C 1000PF K C715 CC73HCH1H470J CHIP C 47PF J K2,K3

C715 CK73HB1C103K CHIP C 0.010UF K K,K3 C716 CC73HCH1H820J CHIP C 82PF J K2,K4 C717 CK73HB1C103K CHIP C 0.010UF K C718 CK73HB1A104K CHIP C 0.10UF K C719 CK73FB1A106K CHIP C 10UF 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 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 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 CK73HB1A104K CHIP C 0.10UF K C760 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 K,K3 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

C720 CC73HCH1H100B CHIP C 10PF B K2,K4 C721 CK73HB1A104K CHIP C 0.10UF K C722 CC73HCH1H470G CHIP C 47PF G C723 CK73HB1A104K CHIP C 0.10UF K C724 CK73HB1A104K CHIP C 0.10UF K

C725 CK73HB1C103K CHIP C 0.010UF K C727 CK73HB1A104K CHIP C 0.10UF K C728 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 CK73HB1C103K CHIP C 0.010UF K C734 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 K2,K4 C738 CC73HCH1H220G CHIP C 22PF G C739 CC73HCH1H060B CHIP C 6.0PF B K2,K4 C740 CK73HB1C103K CHIP C 0.010UF K C741 CK73HB1C103K CHIP C 0.010UF K

C742 CK73FB1A475K CHIP C 4.7UF K C743 CK73HB1C103K CHIP C 0.010UF K C744 CK73HB1H471K CHIP C 470PF K C745 CK73HB1H471K CHIP C 470PF K C746 CC73HCH1H090B CHIP C 9.0PF B

30

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 CK73HB1H471K CHIP C 470PF K

C778 CK73HB1H471K CHIP C 470PF K C779 CK73HB1C103K CHIP C 0.010UF K C780 CK73GB1H104K CHIP C 0.10UF K C782 CC73HCH1H0R5B CHIP C 0.5PF B K2,K4 C783 CK73GB1E105K CHIP C 1.0UF K

C784 CK73HB1H471K CHIP C 470PF K C785 CK73HB1H471K CHIP C 470PF K C786 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 CK73HB1H471K CHIP C 470PF K C795 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

Kenwood NX-300, NX-300 K2, NX-300 K3, NX-300 K4, NX-300G Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

GENERAL

SYSTEM SET-UP

1. Modes

REALIGNMENT

2. How to Enter Each Mode

3. Panel Test Mode

4. Panel Tuning Mode

5. PC Mode

6. Firmware Programming Mode

7. Clone Mode

8. Firmware Version Information

INSTALLATION

Voice Guide & Storage Unit (VGS-1: Option)

DISASSEMBLY FOR REPAIR

1. Precautions for Waterproof

2. Precautions for Disassembly

3. Precautions for Reassembly

CIRCUIT DESCRIPTION

1. Overview

3. Receiver System

4. Transmitter System

5. PLL Frequency Synthesizer

6. Control Circuit

7. Power Supply Circuit

8. Signaling Circuit

9. Compander Circuit

10. GPS Circuit

COMPONENTS DESCRIPTION

Control unit (XC1-0200-XX)

TX-RX unit (XC1-0130-XX)

Sub (GPS) unit (X58-5240-10)

PARTS LISTPARTS LIST

NX-300(G)

CONTROL UNIT (XC1-0020-XX)