Kenwood NEXEDGE NX-210 User manual

SERVICE MANUAL
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2009-3 PRINTED IN JAPAN
B51-8866-00 (N)443
NX-210
VHF DIGITAL TRANSCEIVER
GENERAL................................................................... 2
SYSTEM SET-UP....................................................... 3
REALIGNMENT ......................................................... 3
INSTALLATION.......................................................... 6
DISASSEMBLY FOR REPAIR .................................... 8
CIRCUIT DESCRIPTION .......................................... 12
COMPONENTS DESCRIPTION............................... 18
PARTS LIST ............................................................. 20
EXPLODED VIEW .................................................... 31
PACKING.................................................................. 32
TROUBLE SHOOTING ............................................ 33
ADJUSTMENT ........................................................ 36
TERMINAL FUNCTION ........................................... 58
Does not come with antenna. Antenna is available
as an option.
PC BOARD
DISPLAY UNIT (X54-3660-10) ........................... 66
TX-RX UNIT (X57-7710-10) ............................... 70
INTERCONNECTION DIAGRAM ............................ 74
SCHEMATIC DIAGRAM .......................................... 76
BLOCK DIAGRAM .................................................. 88
LEVEL DIAGRAM ................................................... 91
OPTIONAL ACCESSORIES
KNB-31A (Ni-Cd Battery Pack) ......................... 92
KNB-32N (Ni-MH Battery Pack)........................ 92
KNB-33L (Li-ion Battery Pack) .......................... 92
SPECIFICATIONS .................................................... 93
CONTENTS
Knob (Selector)
(K29-9305-03)
Knob (Volume)
(K29-9304-03)
Main cabinet (18 key)
(A02-4076-01)
Helical Antenna
(KRA-22: option)
Badge
(B43-1606-04)
Knob (PTT)
(K29-9302-33)
Packing (18 key)
(G53-1823-11)

NX-210
2
Document Copyrights
Copyright 2009 by Kenwood Corporation. All rights re-
served.
No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or other-
wise, for any purpose without the prior written permission
of Kenwood.
Disclaimer
While every precaution has been taken in the preparation
of this manual, Kenwood assumes no responsibility for er-
rors or omissions. Neither is any liability assumed for dam-
ages resulting from the use of the information contained
herein. Kenwood reserves the right to make changes to any
products herein at any time for improvement purposes.
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced techni-
cians familiar with similar types of commercial grade com-
munications equipment. It contains all required service
information for the equipment and is current as of the pub-
lication date. Changes which may occur after publication
are covered by either Service Bulletins or Manual Revisions.
These are issued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment informa-
tion, 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 re-
quired component for proper identification.
Firmware Copyrights
The title to and ownership of copyrights for firmware
embedded in Kenwood product memories are reserved for
Kenwood Corporation. Any modifying, reverse engineer-
ing, copy, reproducing or disclosing on an Internet website
of the firmware is strictly prohibited without prior written
consent of Kenwood Corporation. Furthermore, any resell-
ing, assigning or transferring of the firmware is also strictly
prohibited without embedding the firmware in Kenwood
product memories.
NXDN Transceivers:
The AMBE+2(TM) voice coding technology is embedded
in the 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.
SERVICE
This transceiver is designed for easy servicing. Refer to
the schematic diagrams, printed circuit board views, and
alignment procedures contained within.
GENERAL

NX-210
3
SYSTEM SET-UP
REALIGNMENT
1. Modes
User mode
Panel test mode
Firmware version information
Panel tuning mode
Data programming mode
PC test mode PC tuning mode
PC mode
Clone mode
Firmware
programming mode
Mode Function
User mode For normal use.
Panel test mode Used by the dealer to check the fundamen-
tal characteristics.
Panel tuning mode Used by the dealer to tune the transceiver.
PC mode Used for communication between the trans-
ceiver and PC.
Data programming
mode
Used to read and write frequency data and
other features to and from the transceiver.
PC test mode
Used to check the transceiver using the PC.
This feature is included in the FPU.
See pages 45 to 57.
Firmware program-
ming mode
Used when changing the main program of
the flash memory.
Clone mode Used to transfer programming data from
one transceiver to another.
Firmware version
information
Used to confirm the internal firmware ver-
sion.
Are you using the optional antenna?
Are you using the speaker microphone?
YES KRA-22 or KRA-26
Optional antenna
NO
NO
(Option)
(Option)
YES
KMC-25/KMC-41/KMC-42W
Speaker microphone
or
KMC-38GPS
GPS speaker microphone
Are you using the voice guide & storage unit?
NO (Option)
See page 6.
YES VGS-1
Delivery
Merchandise received
License and frequency allocated by FCC
Choose the type of transceiver
Transceiver programming
A personal computer, programming interface (KPG-36/36A),
USB adapter (KCT-53U), and programming software (KPG-111D)
are required for programming.
(The frequency, and signaling data are programmed for the transceiver.)
Frequency range (MHz) RF power Type
TX/RX 136~174 5W NX-210 K2

NX-210
4
2. How to Enter Each Mode
Mode Operation
User mode Power ON
Panel test mode [ ] + Power ON
PC mode Received commands from PC
Panel tuning mode [Panel test mode] + [ ]
Firmware programming
mode [] + Power ON
Clone mode [ ] + Power ON
Firmware version
information [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 com-
puter, programming interface (KPG-36/36A), USB adapter
(KCT-53U) and programming software (KPG-111D).
The programming software can be used with a PC or
compatible. Figure 1 shows the setup of a PC for program-
ming.
MIC
PC
KPG-111D
KPG-36 or KPG-36A or
KPG-36A + KCT-53U
Illustration is KPG-36.
KPG-36
Transceiver
PC
D-SUB
(25-pin)
Transceiver
PC
KPG-36A
D-SUB
(9-pin)
Transceiver
PC
KPG-36A
KCT-53U
USB
Fig. 1
5-2. Connection procedure
1. Connect the transceiver to the computer using the inter-
face cable and USB adapter (When the interface cable is
KPG-36A, the KCT-53U can be used.).
Note:
• You must install the KCT-53U driver in the computer to
use the USB adapter (KCT-53U).
• When using the USB adapter (KCT-53U) for the first time,
plug the KCT-53U into a USB port on the computer with
the computer power ON.
2. When the POWER switch on, user mode can be entered
immediately. When PC sends command the transceiver
enter PC mode, and “PROGRAM” is displayed on the
LCD.
When data transmitting from transceiver, the red LED is
lights.
When data receiving to transceiver, the green LED is
lights.
Note:
The data stored in the computer must match the “Model
Name” when it is written into the flash memory.
5-3. KPG-36/KPG-36A description
(PC programming interface cable: Option)
The KPG-36/36A is required to interface the transceiver
to the computer. It has a circuit in its D-sub connector (KPG-
36: 25-pin, KPG-36A: 9-pin) case that converts the RS-232C
logic level to the TTL level.
The KPG-36/36A connects the universal connector of the
transceiver to the RS-232C serial port of the computer.
5-4. KCT-53U description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-36A to
a USB port on a computer.
When using the KCT-53U, install the supplied CD-ROM
(with driver software) in the computer. The KCT-53U driver
runs under Windows 2000, XP or Vista (32-bit).
5-5. Programming software KPG-111D description
The KPG-111D is the programming software for the
transceiver supplied on a CD-ROM. This software runs un-
der MS-Windows 2000, XP or Vista (32-bit) on a PC or com-
patible machine.
The data can be input to or read from the transceiver and
edited on the screen. The programmed or edited data can
be printed out. It is also possible to tune the transceiver.
6. Firmware Programming Mode
6-1. Preface
Flash memory is mounted on the transceiver. This al-
lows the transceiver to be upgraded when new features
are released in the future. (For details on how to obtain the
firmware, contact Customer Service.)
REALIGNMENT

NX-210
5
6-2. Connection procedure
Connect the transceiver to the personal computer using
the interface cable (KPG-36/36A) and USB adapter (KCT-53U:
when the interface cable is KPG-36A, the KCT-53U can be
used.). (Connection is the same as in the PC Mode.)
6-3. Programming
1. Start up the firmware programming software (Fpro.exe
(ver. 4.0 or later)). The Fpro.exe exists in the KPG-111D
installed holder.
2. Set the communications speed (normally, 115200 bps)
and communications port in the configuration item.
3. Set the firmware to be updated by File name item.
4. Press and hold the [ ] key while turning the transceiver
power ON. Then, the orange LED on the transceiver
lights and “PROGRAM 115200” is displayed.
5. Check the connection between the transceiver and the
personal computer, and make sure that the transceiver is
in the Program mode.
6. Press “write” button in the window. When the trans-
ceiver starts to receive data, the [LOADING] display
lights.
7. If writing ends successfully, the checksum is calculated
and a result is displayed.
8. If you want to continue programming other transceivers,
repeat steps 4 to 7.
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 dis-
play 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 “PRO-
GRAM 57600” is displayed, the display returns to “PRO-
GRAM 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 trans-
ceiver to another by connecting them via their external uni-
versal 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 ([ ] key): The password confirmation
• DELETE ([ ] key): Delete the least digit from the current
password number (Press and hold to delete all password
numbers)
• SELECT ([ ] key): Determine the least digit of the pass-
word number
1. Press and hold the [ ] key while turning the transceiver
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;
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 [ ] or [ ]
key, “CLONE MODE” is displayed if the entered pass-
word is correct. If the password is incorrect, “CLONE
LOCK” is redisplayed.
• How to enter the password using the [ ] and [ ]
keys;
If the [ ] / [ ] key is pressed while “CLONE LOCK” is
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.
If you press the [ ] key after entering the password in
REALIGNMENT

NX-210
6
this procedure, “CLONE MODE” is displayed if the en-
tered 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, “PRO-
GRAM” is displayed. When cloning of data is complet-
ed, the source displays “END”, and the target automati-
cally 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 dis-
plays “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.
REALIGNMENT
Cloning cable
(E30-3325-05)
MIC MIC
Fig. 2
8. Firmware Version Information
Press and hold the [Side1] key while turning the trans-
ceiver power ON and then keep pressing and holding the
[Side1] key, the firmware version information appears on the
LCD.
INSTALLATION
Voice Guide & Storage Unit (VGS-1: Option)
■Installing the VGS-1 (Voice Guide & Storage
Unit) in the transceiver
1. Remove the two screws from the cover.
2. Remove the cover by inserting the tip of a pair of twee-
zers into the screw hole of the cover and prying it open.
Note:
Take care that the tip of tweezers is not inserted into the
screw hole of the chassis.
The tip of tweezers must come in contact with the sur-
face of the chassis.
3. Remove the OPTION PCB from the connector (CN336)
of the TX-RX PCB.
CN336
OPTION PCB

NX-210
7
INSTALLATION
4. 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.
5. Insert the VGS-1 connector into the connector (CN336)
of the TX-RX PCB.
Cushion
(G13-1974-04)
21x21x1.0mm
VGS-1
VGS-1
CN336
6. Insert the flat spring (G02-1853-03) between the VGS-1
and the chassis as shown in the figure.
7. Attach the cushion (G13-1995-04) on the VGS-1 so that it
is attached to a part (shaded region) of the flat spring.
Note:
Be sure not to cover the spring part of the flat spring
with the cushion.
Spring part
Be sure not to cover the spring part
of the flat spring with the cushion.
VGS-1
Cushion
(G13-1995-04)
20x30x1.0mm
Flat spring
(G02-1853-03)
8. Reinstall the cover using the two screws removed in
step 1.

NX-210
8
1. Precautions for Waterproof
• 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.
2. Precautions for Disassembly
■Removing the TX-RX unit from the chassis
1. Remove the Cord ASSY from the connector (CN337) of
the TX-RX unit q.
2. Remove the Speaker lead wire from the connector
(CN805) of the TX-RX unit w.
3. Remove the VOL/CH FPC from the connector (CN201) of
the TX-RX unit e.
4. Remove the Universal connector FPC from the connec-
tor (CN804) of the TX-RX unit r.
5. Remove the PTT FPC from the connector (CN806) of the
TX-RX unit t.
6. Remove the 14 screws y.
7. 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
TX-RX unit to remove it from the chassis u.
Cord ASSY
CN201
CN806
VOL/CH FPC
Universal
Connector FPC
CN805
CN337
CN804
PTT FPC
TX-RX unit
@
:.
;
=
DISASSEMBLY FOR REPAIR
B
B
B
B
B
B
B
>
■Removing the TOP packing (G53-1600-12)
1. Pull the TOP packing to the left to remove the packing
that is fit into the left groove of the chassis q.
2. Pull the TOP packing to the right to remove the packing
that is fit into the right groove of the chassis w.
3. Turn back the TOP packing as shown in the figure e.
4. Remove the TOP packing r.
:
@
.
;
3. Precautions for Reassembly
■Mounting the Display unit onto the chassis
Insert the tab of the speaker holder into the hole in the
upper part of the chassis.
Speaker holder

NX-210
9
DISASSEMBLY FOR REPAIR
■Inserting the rubber spacer (J30-1279-04) onto
the rear panel
1. Bend the two convex parts of the rubber spacer inward q,
then fit the sheet into the space w.
Next, bend the one convex part of the rubber spacer in-
ward e, and insert the sheet into the rubber spacer.
2. Press the rubber spacer, using your fingers, to insert it
between the rubber spacer and the rear panel without
crevice.
Apply the bond (W05-0019-00) or "THREE BOND 1401B"
around the inside of the circle nut before tightening the
circle nut.
Circle nut
Rubber spacer (J30-1279-04)
Sheet (G11-4493-04) :
:
.
@
■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 q.
Note:
Confirm that the entire groove of the key top fits to the
chassis tightly.
2. Press the microphone part of the key top using your fin-
ger w.
Note:
Confirm that the microphone part of the key top fits
tightly with the element microphone.
3. Mount the chassis onto the case e.
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., your finger) r.
Prying it with a pointed metal tool such as forceps, may
damage the key top or packing.
@
.
;
:
18-key part
Auxiliary
(Orange) key
■Removing the lithium cell (W09-0971-05)
Insert a non-conductive screwdriver to groove of one
side of the socket (CN203) 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 (CN203).
Push the lithium cell to insert the lithium cell into the
socket.

NX-210
10
DISASSEMBLY FOR REPAIR
■Forming the Cord ASSY
Form the Cord ASSY according to the procedure shown
in the figure.
TX-RX
J87-0005
CONT
TX-RX
J87-0005
CONT
CONT
Fold it so that the end of the “TX-RX”
side fit the “ - ” silk screen line.
Turn over the cord ASSY.
Fold it so that the bent part of
“TX-RX” side fit the connector outline
of "CONT" side.
Turn over the cord ASSY.
Fold it so that the bent part of
“CONT” side fits the end of “TX-RX”
side.
Cord ASSY is rotated by 180 degrees.
Cord ASSY
Cord ASSY
CN337
TX-RX
unit
■Correspondence when replacing the case
(A02-4076-01)
Apply the dry-surf (410-0019-05) around the LCD and 18-
key part of the case when replacing the case.

NX-210
11
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 requires the new one to get the radio’s performance after repairs.
For example, when “Main Cabinet (A02-4076-01)” is changed, “Sticker (B42-7296-04)”, “Badge (B43-1606-04)” and “Fibrous
Sheet (G10-1400-04)” should be ordered and changed together because Sticker (B42-7296-04), Badge (B43-1606-04) and
Fibrous Sheet (G10-1400-04) are non-reusable.
Main Parts Assembled Sheet/ Cushion
Part Name Part Number Part Name Part Number Remark
Main Cabinet A02-4076-01
Sticker B42-7296-04 “NXDN” is printed.
Badge B43-1606-04 “KENWOOD” is printed.
Fibrous Sheet (SP) G10-1400-04
LCD ASSY B38-0923-05 Adhesive Sheet (LCD) J99-0714-04
Used for fixing the LCD ASSY on the Illumination Guide
(LCD).
Also used for fixing the Illumination Guide (LCD) on the
Control Unit.
Speaker T07-0749-25 Rubber Cushion (SP) G11-4272-14
Chassis A10-4132-03 Rubber Sheet (FET) G11-4308-14 Used for stabilizing the radiation performance of the FET.
Illumination Guide (LCD) B11-1854-02 Sheet (LCD-Holder) G11-4495-04
Packing (18-key) G53-1823-11 Sheet (18-key Packing) G11-4494-04

NX-210
12
CIRCUIT DESCRIPTION
1. Overview
The NX-210 is a VHF portable transceiver designed to
operate in the frequency range of 136 to 174MHz. The unit
consists of receiver, transmitter, phase-locked loop (PLL)
frequency synthesizer, base band parts, power supply, and
control circuits.
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 gener-
ated by the PLL VCO, and modulated by the signal from the
DSP. It is then amplified and fed to the antenna.
x3
57.6MHz
ANT
SW
RF
AMP
MIX
IF AMP
PLL
VCO
Base band circuit
ANT
TX/RX: 136~174MHz
136~174MHz
MCF
CF
450kHz
58.05MHz
19.2MHz
194.05~232.05MHz
PA
AMP
TX
AMP
VC
TCXO
AF
AMP
MIC
AMP
1st MIX SP
MIC
Fig. 1 Frequency configuration
Fig. 2 RF and IF circuit
3. Receiver System
3-1. RF Circuit
An incoming RF signal from the antenna terminal is
passed through the antenna switch (D529, D530, D531 and
D532) and then the bandpass filter (L559, L564). The band-
pass filter is adjusted by a variable capacitor. The input volt-
age to the variable capacitor is regulated by the voltage out-
put from the D/A converter (IC801). The signal is amplified
by an RF amplifier (Q522), and passed through the bandpass
filter (L546, L553). The resulting signal is applied to the first
mixer (Q517), where it is mixed with the first local oscillator
signal output from the frequency synthesizer to produce the
first IF (58.05MHz).
3-2. IF Circuit
The first IF signal is passed through a four-pole mono-
lithic crystal filter (XF501) to reject adjacent channel signals.
The filtered first IF signal is amplified by the first IF amplifier
(Q515) and then applied to the lF system IC (IC507). 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
(CF501) 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
(IC308) through the ceramic filter (CF502) and operational
amplifier (IC506).
IC103
INAMT
IC809
(2/2)
IC816
SWSW
IC507
MIX, AGC
EXAMT
IC802 IC805
IC308
ASIC
IC302
DSP
IC814
IC506
IC817
IC801
AMT
VOL
CF502
BPF
IF AMP
Q515
MCF
XF501
BPF
Q506
2nd OSC
X501
19.2MHz
VC
TCXO
x3 CF501
BPF
INT. SP
EXT. SP
RF AMP
Q522
LPF
ANT
ANT
SW
1st MIX
Q517
L562,L563,
L565
BPF
L546,L553
1st PLL OSC (PLL)
BPF
L559,L564
D529,D530
D531,D532

NX-210
13
3-3. Audio Amplifier Circuit
Audio processing (high-pass filter, low-pass filter, de-
emphasized and so on) at FM mode and decoding at NXDN
mode are processed by DSP. The audio signal from IC308
and IC302 goes through the amplifier (IC802). The signal
then goes through a mute switch (IC805), amplifier (IC809),
electronic volume control (IC801), and AF amplifier (IC814).
While busy, AMT becomes Low to turn IC805 on, and
the signal is fed to the AF switch. While INAMT is High, the
AF switch (IC816) selects the internal speaker, and the au-
dio signal is fed to the internal audio power amplifier (IC103),
and output to the internal speaker. While EXAMT is High,
the AF switch (IC816) selects the external speaker, and
the audio signal is fed to the external audio power ampli-
fier (IC817), and output to the external speaker. The power
supply for IC103 and IC817 is turned on while INAMT or EX-
AMT 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. IC308
detects the logic of SSW and activates either INAMT or EX-
AMT.
Q810
Q806
IC816
IC103
VDD
INT. SP
SHUT DOWN
B
INAMT
EXAMT
AF signal
from IC814
IC817
VDD
EXT. SP
SHUT DOWN
Fig. 3 Audio amplifier circuit
3-4. Squelch Circuit
It amplifies the demodulated noise signal from IC308
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 IC308.
DET
IC308
IC811
(1/2)
ASQAPC
ASQDET
LPF
IC815
(2/2)
HPF
Q808
AMP
D807
RECT
IC815
(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 (Q812). When the SP-MIC is not attached,
the microphone switching terminal (MSW) on the universal
connector becomes High, and the mute switch (Q812) is
turned on. When the SP-MIC is attached, MSW is con-
nected to GND inside the SP-MIC. For this reason, Q812
is turned off, the internal microphone is muted, and only
the input of the external microphone is supplied to the mi-
crophone amplifier. The signal from the microphone goes
through the mute switch (Q807), and is amplified by IC813
(1/2) and limited by the AGC circuit which is composed of
D801, D802, Q803 and Q804.
4-2. Base Band Circuit
The audio signal output from the base band circuit is con-
verted to digital data with a sampling frequency of 48kHz.
This digital data is sent to the DSP (IC302), 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 syn-
thesized with the signals, such as QT and DQT, as required,
and is then output from IC308. In Digital mode, the audio
signal is converted to the 4-Level FSK base band signal and
output from IC308. The DTMF and MSK base band signals
are also generated by the DSP and output by IC308.
LPF (IC803) works as a smoothing filter. The DAC (IC801)
assigns the base band signal to the VCO and VCTCXO (X501).
At this time, the level output according to the transmit car-
rier is fine-adjusted according to each modulation method.
SW
Q807 IC808
MM
AMP
IC807
(1/2)
LPF
IC804
LPF
IC803
(1/2)
AMP IC801
IC807
(2/2)
IC308
ASIC
IC302
DSP
LPF
IC803
(2/2)
AMP
IC502
AMP
VCTCXO
X501
VCO
IC505
(1/2)
AMP
AGC
IC813
(1/2)
D801,D802
Q803,Q804
SW
Q812
Q811
SW
MSW
SCSW
INT. MIC
EXT. MIC
Fig. 5 Audio band and Base band circuit
CIRCUIT DESCRIPTION

NX-210
14
4-3. VOX
IC813 (2/2) amplifies the audio signal captured in the mi-
crophone. The signal is then converted into the DC voltage,
rectified by D803. The DC voltage activates the ASIC (IC308),
and the VOX starts.
4-4. Drive and Final Amplifier
The signal from the T/R switch (D520 is on) is amplified
by the drive amplifier (Q516 and Q518) to 23~26dBm. The
output of the drive amplifier is amplified by the RF power
amplifier (Q520) 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 (D529, D530 are on) and applied to the
antenna terminal.
4-5. APC Circuit
The APC circuit always monitors the current flowing
through the RF power amplifier (Q520) and keeps a constant
current. The voltage drop at R685, R689 and R690 is caused
by the current flowing through the RF power amplifier and
this voltage is applied to the differential amplifier (IC511 1/2).
IC511 (2/2) compares the output voltage of IC511 (1/2) with
the reference voltage from IC308, and the output of IC511
(2/2) controls the VGG of Q516, Q518 and Q520 to make
the both voltages the same. The change of power high/low
is carried out by the change of the reference voltage. Q523,
Q525 and Q526 are turned on and Q519 and Q521 are
turned off in transmit and the APC circuit is active.
Fig. 6 Drive and final amplifier and APC circuit
Final
AMP
VDD
R685
VGG
IC511
(1/2)
From
T/R SW
(D520)
REF
VOL
(IC308)
+B
LPF
ANT
SW
D529,D530Q520
Drive
AMP
Q516
Pre-Final
AMP
Q518
ANT
R689
R690
IC511
(2/2)
5. PLL Frequency Synthesizer
5-1. VCTCXO (X501)
VCTCXO (X501) generates a reference frequency of
19.2MHz for the PLL frequency synthesizer. This reference
frequency is applied to pin 9 of the PLL IC (IC503) and is
connected to the IF circuit as a 2nd local signal through the
Tripler (Q506). The VCTCXO oscillation frequency is deter-
mined by the DC voltage of the VC terminal. The VC voltage
is fixed to 1.65V by R501 and R502, and supplied to the VC
terminal through IC502. The modulation signal is also fed to
VC terminal through IC502.
The frequency adjustment is achieved by switching the
ratio of dividing frequency that is not adjusted by the DC
voltage impressed to VC. The resolution of the adjusting fre-
quency is approximately 8Hz. Because twice the VCO out-
put are input for the input frequency of PLL IC, the sending
and receiving frequency can be adjusted by approximately
4Hz resolution.
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 136 to 174 MHz
and the 1st local receive signal is 194.05 to 232.05MHz.
The VCO oscillation frequency is determined by one
system of operation switching terminal “/T_R” and two sys-
tems 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 (IC308).
When the /T_R logic is low, the VCO outputs the transmit
carrier and when it is high, it outputs a 1st local receive sig-
nal.
The voltage control terminals, “CV” and “ASSIST”, are
controlled by the PLL IC (IC503) and ASIC (IC308) 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.
CIRCUIT DESCRIPTION

NX-210
15
Loop
Filter
BUFF
AMP
Ripple
Filter
VCO
150C
VC
TCXO
PLL
IC
IC503 Q512
Q508,Q509
D503,D504,D516,
D508~D513
BUFF
AMP
Q514
Q513
SDO1
SCK1
/PCS_RF
X501
19.2MHz
T/R
SW
D519,D520
50C
50C
to TX stage
50T
50R
to 1st Mixer
IC505 (1/2)
Q502
Q501
IC504
CV
VCO_MOD
ASSIST
BPF(RX)
L522,L527,
L528
BPF(TX)
L513,L517,
L523
RF
SW
D517,D518
RF
SW
D505,D515
Doubler
5-3. PLL IC (IC503)
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 con-
trol. This allows the VCO oscillation frequency to accurately
match (lock) the desired frequency.
When the frequency is controlled by the PLL, the fre-
quency convergence time increases as the frequency differ-
ence increases when the set frequency is changed. To sup-
plement 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.
The desired frequency is set for the PLL IC by the ASIC
(IC308) 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. Doubler (Q513)
The doubler (Q513) extracts the twice harmonic com-
ponent from the signal from the VCO. This twice harmonic
components is then fed into PLL (IC503) through band pass
filter.
Band pass filter is consists of two filter. One is for TX
(L513,L517,L523) and pass band is 272.0 to 348.0MHz. The
other is for RX 1st local (L522,L527,L528) and pass band is
388.1 to 464.1MHz.
5-5. Local Switch (D519, D520)
The connection destination of the signal output from the
buffer amplifier (Q514) is changed with the diode switch
(D520) that is controlled by the transmission power supply,
50T, and the diode switch (D519) that is controlled by the
receive power supply, 50R. If the 50T logic is high, it is con-
nected to a send-side pre-drive (Q516). If the 50T logic is
low, it is connected to a receive-side mixer (Q517).
6. Control Circuit
The control circuit consists of the ASIC (IC308) and its
peripheral circuits. IC308 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.
6-1. ASIC
The ASIC (IC308) 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 dis-
play circuit and transfers data to or from an external device.
Fig. 7 PLL block diagram
CIRCUIT DESCRIPTION

NX-210
16
6-2. Memory Circuit
The memory circuit consists of the ASIC (IC308) and the
SRAM (IC303) and flash memory (IC301). 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), 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 (IC306).
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 connec-
tor (CN3) of the Display unit (X54-366). It corrects the LCD
contrast voltage using IC102.
6-4. Key Detection Circuit
Keys are detected using the key scan circuit in IC308.
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 R231 and R232 and
is detected by the ASIC (IC308). When the battery voltage
falls below the voltage set by the Low battery warning ad-
justment, 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 battery voltage is low but
the transceiver is still usable.
The red LED blinks and the
warning tone beeps while the
PTT switch is pressed.
The battery voltage is low and
the transceiver is not usable to
make calls.
6-6. DSP
The DSP circuit consists of a DSP (IC302) and processes
the base band signal. The DSP operates on an external clock
of 18.432MHz (the same as the IC308), the I/O section op-
erates 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 (X57). The battery voltage passes
through the 2.5A fuse (F201), and goes to the RF final am-
plifier, AVR ICs (IC204, IC205, IC210, IC818), DC/DC (IC206)
and voltage detector IC (IC209).
The voltage detector watches the battery voltage. If the
battery voltage is 5.6V or higher, the detector outputs High.
While the output of IC209 is High, IC210 and Q208 provide
3.1V (31BU) to the backup-section.
When the VOL SW is turned on, SB1 becomes high (bat-
tery voltage). The DC/DC (IC206) operates if both SB1 and
the output of the detector are high. IC206 outputs 3.8V and
it activates IC203 (33M), IC202 (15M), and IC201 (33A). As a
result, the ASIC and DSP operate.
The SBC signal becomes High after the ASIC operates,
IC205 (5A), Q201 are turned on. IC211 and IC207 operate
by turning on these AVR ICs and FET switches.
The 5UC signal becomes High when an option is in-
stalled on the universal connector. Then IC818 (50U) oper-
ates.
When the /SAVE signal becomes High, IC204 (50C) oper-
ates. The output of IC204 is connected to two FET switches
(Q205, Q206). When the SBC signal becomes High, IC207
(33C) operates. The FET switches are controlled by the
ASIC. Q206 (50T) is turned on in transmit mode. Q205 (50R)
are turned on in receive mode.
When the VOL SW is turned off, the /PSW signal be-
comes Low. After detecting the /PSW signal, the ASIC
changes the SBC signal to Low. Then the power supplies
except IC210 (31BU) stop.
CIRCUIT DESCRIPTION

NX-210
17
Q206
50T SW
Q205
50R SW
IC204
AVR
/SAVE
/5TC
5RC
SBC
50R
+B
50C
50T
RX circuit
RF Final AMP
APC
VCO
TX circuit
IC211
DC/DC
150C Assist, Tune
31BU SRAM, RTC
IC207
AVR IC
33C PLL, VCTCXO
Q201
SB2 SW
SB2 Back Light
Key Light
TX/Busy LED
IC105 (X53)
DC/DC
–10V LCD Bias
IC205
AVR IC
5A Option
F201
2.5A
IC818
AVR IC
5UC 50U Universal
IC210
AVR IC Q208
31BU
33M
SB1
ASIC, DSP I/O,
Flash, LCD DRV
IC206
DC/DC IC203
AVR
VOL SW
15M ASIC, DSP core
IC202
DC/DC
33A
/PSW
/BINT
ASIC Analog,
Audio
IC201
AVR
IC209
Detect
Q207
AND
D209
OR
D212
OR
Q203
Lvl Conv
IC308
ASIC
Q204
Lvl Conv
SBC
TX-RX unit (X57)
Fig. 8 Power supply circuit
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 IC308. The modula-
tion balance of the QT/DQT/LTR signal is adjusted by the
D/A converter (IC801) and the resulting signal is routed to
the modulation input of the VCO and VCXO (X501). Each
deviation of the TX QT, DQT, LTR, DTMF, 2-tone and MSK
tone is adjusted by changing the output level of IC308 and
the resulting signal is routed to the VCO and VCXO. The RX
DTMF tone is routed to the receive audio signal system, and
is output from the speaker.
8-2. Decode (QT/DQT/LTR/DTMF/2-tone/MSK)
The audio signal is removed from the FM detection
signal sent to the DSP circuit and the resulting signal is de-
coded.
9. Compander Circuit
The term “compander” means compressor and expand-
er. The compander reduces noise by utilizing a compressor
and an expander. The transceiver contains a DSP (IC302) to
perform this operation. The transceiver compander can be
turned on or off using the FPU.
CIRCUIT DESCRIPTION

NX-210
18
Display unit (X54-3660-10)
Ref. No. Part Name Description
IC102 IC LCD contrast
IC105 IC Voltage doubling inverter
D1~4 LED 6key backlight
D5~10 LED 12key backlight
D11~14 Diode 12key control
D15~18 LED LCD backlight
COMPONENTS DESCRIPTION
TX-RX unit (X57-7710-10)
Ref. No. Part Name Description
IC101 IC Bus switch
IC103 IC Audio AMP
IC104 IC Bus switch
IC201 IC Voltage regulator (33A)
IC202 IC DC/DC Converter (15M)
IC203 IC Voltage regulator (33M)
IC204 IC Voltage regulator (50C)
IC205 IC Voltage regulator (5A)
IC206 IC DC/DC converter (38M)
IC207 IC Voltage regulator (33C)
IC208 IC 50T control
IC209 IC Reset
IC210 IC Voltage regulator
IC211 IC DC/DC converter
IC301 IC FLASH ROM
IC302 IC DSP
IC303 IC SRAM
IC304 IC 2 input AND gate
IC305 IC Reset
IC306 IC RTC
IC307 IC Buffer
IC308 IC ASIC
IC309 IC I/O control
IC310 IC 2 input AND gate
IC501 IC Temperature sensor
IC502 IC DC AMP for TCXO MOD
IC503 IC PLL IC
IC504 IC DC AMP for VCO tune
IC505 IC OP AMP (VCO MOD/APC)
IC506 IC Buffer
IC507 IC FM IC
Ref. No. Part Name Description
IC508 IC OP AMP (RSSI/VAGC)
IC509,510 IC DC AMP for BPF
IC511 IC Auto power control
IC801 IC D/A converter
IC802 IC RX AF LPF
IC803 IC Modulation LPF
IC804 IC MIC AMP
IC805 IC RX AF switch
IC806 IC Sidetone mute
IC807 IC MOD/MIC summing AMP
IC808 IC MIC switch
IC809 IC 1.65V REF/RX summing AMP
IC810 IC OPT switch
IC811 IC APC LPF
IC812,813 IC VOX AMP
IC814 IC AF AMP
IC815 IC SQL BPF/SQL DC AMP
IC816 IC AF switch
IC817 IC Audio AMP
IC818 IC Voltage regulator (50U)
IC819 IC 2 input AND gate
IC820,821 IC Dual bus buffer
Q101 Transistor 12key backlight switch
Q102 Transistor LCD backlight switch
Q103 Transistor 12key backlight switch
Q104 Transistor LCD backlight switch
Q105 FET 12key backlight switch
Q201 Transistor SB2 switch
Q202 FET SB2 switch control
Q203,204 FET Level converter
Q205 FET 50R switch
Q206 Transistor 50T switch
Q207,208 Transistor DC switch
Q209,210 FET DC switch
Q211 Transistor DC switch
Q212 FET DC/DC converter switch
Q213 Transistor DC switch
Q214 Transistor TX/RX LED switch
Q215 Transistor DC switch
Q501 Transistor Ripple filter
Q502 FET Buffer AMP
Q503 Transistor Buffer AMP switch
Q504 FET Buffer AMP switch
Q505 Transistor Buffer AMP switch
Q506 Transistor 2nd Local buffer AMP

NX-210
19
COMPONENTS DESCRIPTION
Ref. No. Part Name Description
Q507 Transistor Ripple filter
Q508,509 FET VCO oscillation
Q510,511 FET T/R switch
Q512~514 Transistor Buffer AMP
Q515 Transistor IF AMP
Q516 FET RF AMP
Q517 FET Mixer
Q518 FET RF drive AMP
Q519 Transistor APC switch
Q520 FET RF final AMP
Q521 FET APC switch
Q522 FET RF AMP
Q523 Transistor APC switch
Q525 FET APC switch
Q526 Transistor APC switch
Q801 FET Tone switch
Q802 Transistor OPT switch
Q803,804 Transistor MIC AGC
Q805 FET W/N noise switch
Q806 FET Voltage regulator switch
Q807 FET MIC mute
Q808 Transistor SQL noise AMP
Q809,810 Transistor Voltage regulator (AF AMP)
Q811 FET MIC switch control
Q812 FET MIC switch
Q813 FET Level converter
D101,102 Zener diode Surge absorption
D107 Diode 12key backlight switch
D108 Diode LCD backlight switch
D113 Diode SP control
D201 Diode Reverse current prevention
D202,203 Diode Surge absorption
D204 Diode DC/DC converter
D205 Diode 5A switch
D206 Diode DC/DC converter
D207 Diode Over voltage protection
D208 Diode Speed up diode
D209 Diode DC/DC converter control
D210 Diode Reverse current prevention
D211 Diode RTC BATT control
D212 Diode DC switch control
D213 Diode RTC BATT control
Ref. No. Part Name Description
D214 LED TX/RX LED
D301 Diode Reverse current prevention
D501,502 Diode Speed up diode
D503
Variable
capacitance
diode
Frequency control
D504
Variable
capacitance
diode
Frequency control
D505 Diode Buffer AMP switch
D508~513
Variable
capacitance
diode
Frequency control
D514 Diode Speed up diode
D515 Diode Buffer AMP switch
D516
Variable
capacitance
diode
TX modulation
D517,518 Diode Buffer AMP switch
D519,520 Diode Local switch
D523 Zener diode Constant current circuit
D524,525
Variable
capacitance
diode
Vari-cap tune
D526 Zener diode APC protect
D527 Diode Reverse current prevention
D528
Variable
capacitance
diode
Vari-cap tune
D529~532 Diode Antenna switch
D533
Variable
capacitance
diode
Vari-cap tune
D801~803 Diode Detector
D804 Diode VOX AMP
D805 Diode PLD control
D806 Diode SP control
D807 Diode Noise detector
D808~814 Diode Reverse current prevention
D815,816 Zener diode Surge absorption
D817 Diode Surge absorption
D818 Zener diode Surge absorption
D819 Diode Surge absorption
D820 Zener diode Surge absorption

NX-210
20
✽New Parts. indicates safety critical components.
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L: Scandinavia K: USA P: Canada
Y: PX (Far East, Hawaii) T: England E: Europe
Y: AAFES (Europe) X: Australia M: Other Areas
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
PARTS LIST
NX-210 (Y50-6480-10)
DISPLAY UNIT (X54-3660-10)
PARTS LIST
1 1B
✽A02-4076-01 MAIN CABINET (18KEY)
2 3A
✽A10-4132-03 CHASSIS
3 3B A62-1093-12 PANEL (TOP)
5 2D B09-0625-03 CAP ACCESSORY
6 1A
✽B10-2795-02 FRONT GLASS
7 3B B11-1820-04 ILLUMINATION GUIDE (TX/BUSY)
8 2A B11-1853-24 FILTER (LCD)
9 2A B11-1854-02 ILLUMINATION GUIDE (LCD)
11 1A B38-0923-05 LCD ASSY
12 1A B42-7296-04 STICKER
13 1B B43-1606-04 BADGE
14 2D
✽B62-2152-00 INSTRUCTION MANUAL
16 2B E04-0416-25 RF COAXIAL RECEPTACLE (SMA)
17 2B E23-1104-04 TERMINAL (ANT)
18 2A
✽E37-1462-05 LEAD WIRE WITH CONNECTOR (SP)
19 3B E58-0511-15 RECTANGULAR RECEPTACLE (SP/MIC)
20 3B E72-0419-23 TERMINAL BLOCK
22 3A F07-1880-04 COVER (OP BOARD)
23 3B F20-3350-04 INSULATING SHEET (TX-RX PCB)
25 1B
✽G10-1400-04 FIBROUS SHEET (SP)
26 1A G11-4272-14 RUBBER CUSHION (SP)
27 3A G11-4273-24 SHEET (PTT)
28 3A G11-4308-14 RUBBER SHEET (FET)
29 1A G11-4458-14 SHEET (SP)
31 3B
✽G11-4493-04 SHEET (VOL-RING)
32 1B
✽G11-4494-04 SHEET (18KEY PACKING)
33 2A
✽G11-4495-04 SHEET (LCD-HOLDER)
34 3A G13-2020-04 CUSHION (OP BOARD)
35 2A G13-2068-04 CUSHION (DISPLAY PCB)
37 2A G13-2258-04 CUSHION (50PIN FPC)
38 3A
✽G13-2288-04 CUSHION (DC-DC)
39 3B G53-1600-12 PACKING (TOP)
40 3B G53-1601-04 PACKING (TERMINAL BLOCK)
41 3A G53-1602-14 PACKING (OP BOARD COVER)
43 2B,3B G53-1603-04 PACKING (SMA/SELECTOR O-RING)
44 1B
✽G53-1823-11 PACKING (18KEY)
46 3C
✽H52-2316-02 ITEM CARTON CASE
48 2B J19-5478-03 HOLDER (VOL/SELECTOR)
49 1A
✽J19-5529-02 HOLDER (SP)
50 2C J29-0730-05 BELT CLIP ACCESSORY
51 3B J30-1279-04 SPACER (VOL)
52 2B J82-0089-05 FPC (VOL/SELECTOR)
54 3B J82-0090-25 FPC (UNIVERSAL)
55 3A J82-0091-35 FPC (PTT)
56 2A J99-0714-04 ADHESIVE SHEET (LCD)
58 1A K29-9302-33 KNOB (PTT)
59 1B K29-9303-03 BUTTON KNOB (SIDE)
60 1B K29-9304-03 KNOB (VOLUME)
61 1B K29-9305-03 KNOB (SELECTOR)
A 2D N08-0548-24 DRESSED SCREW ACCESSORY
B 3B N09-2426-14 HEXAGON HEAD SCREW (BATT-)
C 3A N09-6565-05 PAN HEAD SCREW (CASE/CHASSIS)
D 3B N14-0806-04 CIRCULAR NUT (VOL)
E 3B N14-0810-04 CIRCULAR NUT (SELECTOR)
F 2A,3A N30-2004-43
PAN HEAD MACHINE SCREW (OPB/FET)
G 2B N30-2604-48 PAN HEAD MACHINE SCREW (ANT)
H 2C N30-3008-60 PAN HEAD MACHINE SCREW (CLIP)
J 2A,2B N83-2005-48 PAN HEAD TAPTITE SCREW (PCB)
K 2B N83-2006-43 PAN HEAD TAPTITE SCREW (HOLDER)
63 2B R31-0652-15 VARIABLE RESISTOR (VOL)
65 2B S60-0430-05 ROTARY SWITCH (SELECTOR)
67 1A T07-0749-25 SPEAKER
68 2A T91-0579-05 MIC ELEMENT
70 3A W09-0971-05 LITHIUM CELL
72 2A X42-3340-10 CORD ASSY (50PIN FPC)
D1-10 B30-2215-05 LED
D15-18 B30-2215-05 LED
C1 CK73HB1A104K CHIP C 0.10UF K
C6-10 CK73GB1E105K CHIP C 1.0UF K
C11,12 CK73HB1A104K CHIP C 0.10UF K
C14 CC73HCH1H221J CHIP C 220PF J
C15 CK73HB1A104K CHIP C 0.10UF K
C16,17 CK73HB1H471K CHIP C 470PF K
C20-29 CC73HCH1H470J CHIP C 47PF J
C33-44 CC73HCH1H470J CHIP C 47PF J
C119 CK73HB1A104K CHIP C 0.10UF K
C122 CC73HCH1H101J CHIP C 100PF J
C123 CS77AP1C2R2M CHIP TNTL 2.2UF 16WV
C125 CS77AP1C2R2M CHIP TNTL 2.2UF 16WV
C133 CS77AP1C2R2M CHIP TNTL 2.2UF 16WV
C135 CK73HB0J105K CHIP C 1.0UF K
C136,137 CK73HB1H102K CHIP C 1000PF K
C138 CC73HCH1H470J CHIP C 47PF J
CN3 E40-6755-05 FLAT CABLE CONNECTOR
CN8 E40-6421-15 PIN ASSY
R1,2 RK73HB1J122J CHIP R 1.2K J 1/16W
R3-5 RK73HB1J152J CHIP R 1.5K J 1/16W
R6-14 RK73HB1J471J CHIP R 470 J 1/16W
R15 RK73HB1J000J CHIP R 0.0 J 1/16W
R16-23 RK73HB1J103J CHIP R 10K J 1/16W
R24 RK73HB1J104J CHIP R 100K J 1/16W
R25 RK73HB1J000J CHIP R 0.0 J 1/16W
R26,27 RK73HB1J151J CHIP R 150 J 1/16W
R112 RK73HB1J123J CHIP R 12K J 1/16W
R113 RK73HB1J105J CHIP R 1.0M J 1/16W
R115 RK73HB1J104J CHIP R 100K J 1/16W
R133 RK73HB1J470J CHIP R 47 J 1/16W
R134 RK73HB1J000J CHIP R 0.0 J 1/16W
NX-210
DISPLAY UNIT (X54-3660-10)