Kenwood NEXEDGE NXR-810 User manual

SERVICE MANUAL
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2009-12 PRINTED IN JAPAN
B51-8902-00 (N)427
NXR-810
UHF DIGITAL BASE-REPEATER
CH/STATUS
VOLUME
BUSY
TX POWER
MIC
FUSE
N SYNC
DC 13.6V
REF IN RX IN
TX OUT CONTROL
I/O
TEST/SPKR
Front panel
(A62-1174-03)
Knob (Power)
(K29-9106-04)
Key top
(K29-9370-02)
Knob (Volume)
(K29-5389-03)
Modular jack
(E58-0522-05)
Rear panel
(A82-0077-02)
Antenna cable (REF IN)
(E30-7690-05)
Antenna cable (RX IN)
(E30-3418-15)
Lead wire with connector
(ACC15P)
(E37-0913-05)
Lead wire with connector
(DSUB25P)
(E37-1376-05)
Modular jack x 2
(E58-0533-05)
DC cord (Ext DC in)
(E30-3414-05)
Blade fuse (15A/32V)
(F05-1537-05)
Antenna cable (TX OUT)
(E30-7528-15)
GENERAL................................................................... 2
SYSTEM SET-UP....................................................... 3
REALIGNMENT ......................................................... 3
OPERATING FEATURES ........................................... 5
INSTALLATION.......................................................... 6
MODIFICATION ......................................................... 8
DISASSEMBLY FOR REPAIR .................................... 8
CIRCUIT DESCRIPTION ............................................ 9
COMPONENTS DESCRIPTION............................... 18
PARTS LIST ............................................................. 20
EXPLODED VIEW .................................................... 36
PACKING.................................................................. 38
ADJUSTMENT ........................................................ 39
TERMINAL FUNCTION ........................................... 53
PC BOARD
FINAL UNIT (X45-3930-10) ................................. 58
CONTROL UNIT (X53-4490-10) .......................... 62
DISPLAY UNIT (X54-3580-20) ............................. 66
TX-RX UNIT (X57-7950-10)................................. 70
RX VCO/PLL UNIT (X58-5090-10) ...................... 74
TX VCO/PLL UNIT (X58-5100-10) ...................... 75
INTERCONNECTION DIAGRAM ............................ 76
SCHEMATIC DIAGRAM .......................................... 78
BLOCK DIAGRAM ................................................... 96
OPTIONAL ACCESSORIES
KES-5 (EXTERNAL SPEAKER) ............................ 99
SPECIFICATIONS ................................. BACK COVER
CONTENTS
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NXR-810
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.
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.
Transceivers containing AMBE+2™ Vocoder:
The AMBE+2™ voice coding technology is embedded
in the firmware under the license of Digital Voice Systems,
Inc.
GENERAL
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.
PERSONAL SAFETY
The following precautions are recommended for personal
safety:
• DO NOT transmit if someone is within two feet (0.6 me-
ter) of the antenna.
• DO NOT transmit until all RF connectors are secure and
any open connectors are properly terminated.
• SHUT OFF this equipment when near electrical blasting
caps or while in an explosive atmosphere.
• All equipment should be properly grounded before pow-
erup for safe operation.
• This equipment should be serviced by only qualified
technicians.
SERVICE
This transceiver is designed for easy servicing. Refer to
the schematic diagrams, printed circuit board views, and
alignment procedures contained within.
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NXR-810
3
SYSTEM SET-UP
REALIGNMENT
1. Modes
User mode
PC mode
Firmware programming mode
PC programming mode
PC test mode PC tuning mode
Mode Function
User mode Use this mode for normal operation.
PC mode
Use this mode to make various settings by
means of the FPU through the RS-232C
port.
PC programming
mode
Use to read and write frequency data and
other features to and from the repeater.
PC test mode Use to check the repeater using the PC.
This feature is included in the FPU.
Firmware program-
ming mode
Use when changing the firmware program
of the flash memory.
2. How to Enter Each Mode
Mode Operation
User mode Power on.
PC mode Received commands from PC.
Firmware programming mode [PF1] + Power on (one second)
3. PC Mode
3-1. Preface
The NXR-810 is programmed by using a personal com-
puter, programming interface (KPG-46/46A) and program-
ming software (KPG-129D).
The programming software can be used with a PC. Fig-
ure 1 shows the setup of a PC for programming.
3-2. Connection Procedure
1. Connect the NXR-810 to the computer using the inter-
face cable and USB adapter (When the interface cable is
KPG-46A, 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 power is applied, the user mode is entered im-
mediately. When the PC sends a command, the repeater
enters the PC mode and displays “PC” on the 7-seg-
ment LED. When data is being transmitted to the PC
from the repeater, the TX LED flashes. The BUSY LED
flashes when data from the PC is being received by the
repeater.
Note:
• The data stored in the personal computer must match
the model type, when it is written into the flash memory.
• Change the NXR-810 to PC mode, then attach the inter-
face cable.
Merchandise received
Choose the type of transceiver
See page 3.
A personal computer, programming interface (KPG-46/46A), and
programming software (KPG-129D) are required for programming.
DC power supply or
duplexer?
Repeater programming & setup
Installation in the optional space
YES
NO
Delivery
(Option)
Frequency range RF power Type
TX/RX 400~470MHz 40W K2
External speaker? KES-5 installation
YES
NO (Option)
See page 6.
See page 6.
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4
3-3. KPG-46/KPG-46A Description
(PC programming interface cable: Option)
The KPG-46/46A is required to interface the NXR-810 to
the computer. It has a circuit in its D-sub connector (KPG-
46: 25-pin, KPG-46A: 9-pin) case that converts the RS-232C
logic level to the TTL level.
The KPG-46/46A connects the 8-pin microphone connec-
tor of the NXR-810 to the RS-232C serial port of the com-
puter.
3-4. KCT-53U Description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-46A 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).
3-5. Programming Software KPG-129D Description
The KPG-129D is the programming software for the
transceiver supplied on a CD-ROM. This software runs un-
der Windows 2000, XP or Vista (32-bit) on a PC.
The data can be input to or read from the NXR-810 and
edited on the screen. The programmed or edited data can
be printed out. It is also possible to tune the NXR-810.
KPG-129D
PC
NXR-810
KPG-46 or KPG-46A or
KPG-46A + KCT-53U +
Tuning cable (E30-3383-05)
KPG-46
Transceiver
PC
D-SUB
(25-pin)
Transceiver
PC
KPG-46A
D-SUB
(9-pin)
Transceiver
PC
KPG-46A
KCT-53U
USB
Fig. 1
4. Firmware Programming Mode
4-1. Preface
The NXR-810 uses flash memory to allow it to be easily
upgraded when new features are released in the future.
4-2. Connection Procedure
Connect the NXR-810 to the personal computer using
the interface cable (KPG-46/46A) and USB adapter (KCT-53U:
when the interface cable is KPG-46A, the KCT-53U can be
used.). (Connection is the same as in the PC Mode.)
Note:
You can only program firmware from the 8-pin micro-
phone connector on the front panel. Using the 25-pin logic
interface on the rear panel will not work.
4-3. Programming
1. Start up the firmware programming software (Fpro.exe
(ver. 4.1 or later)). The Fpro.exe exists in the KPG-129D
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. Turn the NXR-810 power ON with the [PF1] key held
down. Then, “P.G.” is displayed.
5. Check the connection between the NXR-810 and the
personal computer, and make sure that the NXR-810 is in
the Program mode.
6. Press write button in the window. When the NXR-810
starts to receive data.
7. If writing ends successfully, the TX LED on the NXR-810
lights.
8. If you want to continue programming other NXR-810s,
repeat steps 3 to 6.
Note:
This mode cannot be entered if the Firmware Program-
ming mode is set to Disable in the Programming soft-
ware.
4-4. Function
If you press the [PF6] key while “P.G.” is displayed, the
display changes to “PG” to indicate that the write speed
is low speed (38400 bps). If you press the [PF6] key again
while “P G” is displayed, the display changes to “P G.” to
indicate that the write speed is mid speed (57600 bps). If
you press the [PF6] key again while “P G.” is displayed, the
display changes to “P.G.” to indicate that the write speed is
high speed (115200 bps).
Note:
Normally, write in the high-speed mode.
REALIGNMENT
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NXR-810
5
OPERATING FEATURES
1. Two 7-segment LED Displays
• Channel display (1~30): While operating normally in user
mode.
• When the displayed channel is contained in scan se-
quence, the right side decimal point is displayed.
• When the displayed channel is the priority channel, the
left side decimal point is displayed.
• “PC” is displayed while in PC mode.
• “PG” is displayed while in firmware programming mode.
2 decimal points displayed = 115,200 bps
1 decimal point displayed = 57,600 bps
No decimal = 38,400 bps
• “E1” is displayed when FPU data is not written.
• “E2” is displayed when the channel data is not written.
• “E3” is displayed when PLL is unlocked.
Receiver PLL unlocked = BUSY LED blinks.
Transmitter PLL unlocked = TX LED blinks.
• “E4” is displayed when PTT is attempted on a channel
number that has no TX frequency data programmed.
• “SC” is displayed while in scan mode.
• “E5” is ESN blank error.
• “E.6.” is MCU internal RAM error.
• “E6.” is DSP RAM error.
• “E6” is MCU External RAM error.
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6
1. External Speaker (KES-5)
The NXR-810 has a built-in speaker (5W/8Ω), and the
external speaker output from the TEST/SPKR connector (15-
pin) on the rear of the radio is 4W/4Ω. Use external speaker
KES-5.
1-1. Connection for the KES-5 with the NXR-810
■When taking the AF output from the TEST/SPKR
connector (15-pin) on the rear of the radio
The following tools are required for changing the connec-
tor.
• Extracting tool
The following extracting tool is recommended:
Molex Inc. Order No.: J5800-002 (W05-0878-00)
1. Remove the connector with jumper from the external
speaker connector on the rear panel of the radio. (Fig.1-1)
Note: Save the jumper, which is required when the radio
is used without the external speaker.
2. Remove the terminals with the jumper from the connec-
tor housing holes number 9 and 12 using the extracting
tool.
Removing the jumper lead (Fig. 1-2)
1) Insert the extracting tool (J5800-002) into the connec-
tor while pushing the jumper lead in the direction of (a).
2) Push the extracting tool in to collapse the barbs of the
crimp terminal.
3) Pull out the lead while continuing to push the extract-
ing tool in the direction (b).
3. Reinsert the terminal with the black and white stripe lead
into hole number 12, and the terminal with the black lead
into hole number 6. (Fig. 1-3)
4. Attach the connector to the external speaker connector
on the radio.
Note:
Relationship between the TEST/SPKR connector (15-pin)
connection and speaker output:
• When pins 9 and 12 are shorted: The built-in speaker is
used.
• When pins 9 and 12 are open and output is from pins 6
and 12: KES-5 is used.
Square-type plug
(E31-3228-05)
Accessory
Fig. 1-1
INSTALLATION
Jumper lead
Crimp termial
Crimp termial
Barbs
Extracting tool
(11-03-0002)
(a)
(b)
Fig. 1-2
Crimp terminal
(E23-0613-05)
12
15
13
1
3
6
Black/White lead
Black lead
Fig. 1-3
2. Accessory Cabinet
You can install optional accessories, such as a DC power
supply or duplexers, in the accessory cabinet.
1. Place the optional accessory in the cabinet as shown be-
low.
2. If necessary, attach cushions (G13-1801-04 and/or G13-
1802-04) to the top plate (J21-8559-04) in order to adjust
the space between the cabinet and the top plate. Then,
insert the 3 tabs of the plate into the slots in the side of
the cabinet. High, middle, or low positions are available.
To affix the plate, inset and tighten the 2 screws on the
other side of the plate.
You can also flip the top plate upside-down to adjust the
height of the cabinet space.
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NXR-810
7
or
Top plate
(J21-8559-04)
Insert the plate
tabs to set the
height position
(high, middle,
or low).
Tighten screws
Cushion
(G13-1801-04 or
G13-1802-04)
The top plate can be inverted to adjust the height
of the cabinet space.
Fig. 2
3. Key Cover
To avoid accidentally pressing the keys, you can install
the key cover.
1. Install and fix the key protector using the 5 supplied
screws (N35-3006-43).
Screws
(N35-3006-43) x 5
Fig. 3
4. Desktop Repeater
When you use the repeater on a desktop, attach the 4
spacers to the base of the repeater as shown in the figure.
With these spacers attached, the front panel will not touch
the desk surface.
Peel off the backing
paper to attach these
spacers (J02-0492-04).
Spacers
(J02-0475-05)
Pegs
Firmly press these pegs
(J59-0302-05) through the
spacers to affix them to
the repeater.
Fig. 4
5. Installing Name Plates
Punch out the name plate card. Then insert the plates
onto the relative function keys.
You can reconfigure the name plates at any time.
Side view of the key
Squeeze and
insert the plates.
Name plates for
the function keys
Name plates
Punch out the
name plate cards
Fig. 5
INSTALLATION
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NXR-810
8
MODIFICATION
1. DC Source Switch
To prevent the power supply from turning off due to
misoperation of the DC source switch on the front panel or
accidents (tampering) after installation, the main unit can be
kept on regardless of the on/off setting of the DC source
switch on the front panel.
Using solder, short the PSW land near the CN40 connec-
tor.
DISASSEMBLY FOR REPAIR
1. How to Remove the Panel Assy (ABS)
Note: You can remove the panel assembly (ABS) without
removing the top panel (A62-0840-03).
1. To remove the panel (TX-RX, w), loosen the 6 screws
(
q).
2. To remove the panel assembly (Front, r), loosen the 6
screws (
e).
3. The panel assembly (ABS) is securely fastened by 4 tabs
(
t) on the top and bottom. You can remove the panel
assembly by pulling to the front while you are pulling up
the tabs.
:
@
:
.
.
;
=
=
=
=
CN40
PSW
CONTROL UNIT (X53-4490-10)
Component side
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NXR-810
9
1. Outline
The NXR-810 is a UHF repeater operating in the 400~
470MHz frequency range.
2. TX-RX unit
TX-RX unit (X57-7950-10) consists of the following cir-
cuit.
(1) Internal/external reference circuit
(2) Transmitter reference 16.8MHz PLL circuit
(3) Transmitter main PLL circuit
(4) Modulation level adjustment circuit
(5) Front-end circuit
(6) 1st-Mixer circuit
(7) IF circuit
(8) Receiver PLL circuits
(9) AVR circuits
(10) Other circuits
2-1. Internal/External reference circuit
The internal reference circuit consists of X500, Q502,
Q504 and D505. The output of 19.2MHz VCTCXO (X500) is
fed to buffer amplifier Q502. The higher harmonic wave is
attenuated by the LPF. This reference signal is fed to IF IC
(IC304) as the 2nd Local signal through the Tripler.
The internal reference signal is amplified by Q504 to
achieve the needed level for PLL ICs. That signal is divided
by a Wilkinson divider. The divided signal is fed to the PLL
IC for the receiver. Another signal is fed to the transmitter
reference 16.8MHz PLL IC through PIN diode switch (D505)
which switches the Internal or external reference.
The external reference circuit consists of CN500, Q501,
Q503, IC500, IC501, D503 and D504. The external refer-
ence signal (10MHz/0dBm) input from CN500 is fed to buf-
fer amplifier Q501 and is amplified by Q503. Q503 is a dual
gate MOS-FET. The output of amplifier (Q503) is detected
by D503 and that DC voltage is amplified by IC500 (B/2).
The amplified DC voltage is compared to the reference volt-
age by IC500 (A/2). The difference of voltages is amplified
by IC500 (A/2) and is fed to the gate-2 terminal of Q503. The
voltage of the Q503 gate-2 terminal is controlled automati-
cally to constantly maintain the power output of amplifier
(Q503). The output of amplifier (Q503) is fed to the transmit-
ter reference 16.8MHz PLL IC through the PIN diode switch
(D504) which switches the Internal or External reference.
The PIN diode switches (D504, D505) are controlled by
the I/O expander IC (IC805 Pin15). The I/O expander IC is
controlled by the MCU which is in the Control unit (X53-449).
If internal reference is selected by the FPU, the I/O expand-
er IC outputs an “H” status. This signal sets power switch
Q506 to ON. Then D505 is activated.
If external reference is selected, the I/O expander IC out-
puts an “L” status. This signal sets power switch Q500 to
ON. Then D504 is activated.
CIRCUIT DESCRIPTION
10MHz or
19.2MHz
Detector
RX VCO
/PLL
3dB
ATT
3dB
ATT
X58-5090-10
2nd Lo
REF
AMP
Q504
AMP
Q502
AGC AMP
Q503
Buffer
Q501
SW
X3
Q202LPF
LPF
CN500
LPF
D503
AMP
IC500(B/2)
AMP
IC500(A/2)
X500
OSC
19.2MHz
D504,D505 EXT_IN
10MHz
Fig. 1 Internal/external reference circuit
2-2. Transmitter reference 16.8MHz PLL circuit
The transmitter reference 16.8MHz PLL circuit produces
the reference frequency signal for the Transmitter Main PLL
circuit and modulates the low-frequency components.
The circuit consists of IC600, IC601, IC602, IC603,
IC604, Q601, Q602, Q603, and X600.
The VCXO (X600) signal enters the buffer amplifier Q603
and is amplified by Q602. The higher harmonic wave is at-
tenuated by the LPF and returns to IC602. Its phase is com-
pared with that of the reference frequency 5kHz.
The phase difference signal produced by the comparing
phase is converted to a DC voltage by a lag-lead type loop
filter. This DC voltage is input to the IC604 invert amplifier
and is synthesized with the modulating signal. This DC volt-
age is input to the X600 control voltage terminal for control-
ling the VCXO oscillating frequency 16.8MHz.
The 16.8MHz oscillating signal is fed to the Q603 buffer
amplifier. The output signal of the buffer amplifier is used as
the reference frequency signal of the transmitter main PLL
circuit.
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NXR-810
10
2-3. Transmitter Main PLL circuit (SUB unit)
■VCO
The TX VCO circuit consists of two VCOs (VCO A X58-
510: Q352, VCO B X58-510: Q353). Those VCOs generates
a transmit carrier. VCO A Q352 produces a transmitter fre-
quency from 400.000MHz to 434.995MHz. VCO B Q353
produces a transmitter frequency from 435.000MHz to
470.000MHz.
Those VCO oscillation frequencies are determined by
two systems of voltage control terminals: “CV” and “TXAS-
SIST”.
The voltage control terminals, “CV” and “TXASSIST”,
are controlled by the PLL IC (X58-510: IC300) and MCU
(X53-449: IC20) and the output frequency changes continu-
ously according to the applied voltage. For the modulation
input terminal, “MO”, the output frequency changes ac-
cording to the applied voltage.
D355
D352
D358D359
SW Q350
TXVCOA
TX_CV
TXASSIST
TXVCOB
MO
80C
80C
VO
VCO_A
Q352
Buffer
Q354
SW Q351
D357
D353
D360D361
VCO_B
Q353
Fig. 3 Transmitter VCO circuit
■PLL IC (X58-510: IC300)
The PLL IC compares the differences in phases of the
VCO oscillation frequency and the transmitter PLL reference
signal (16.8MHz), returns the difference to the VCO CV ter-
minal and realizes the “Phase Locked Loop” for the return
control. This allows the VCO oscillation frequency to accu-
rately match (lock) the desired frequency.
When the frequency is controlled by the PLL, the fre-
quency convergence time increases as the frequency dif-
ference increases when the set frequency is changed. To
supplement this, the MCU 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 approx. 3.0V.
The desired frequency is set for the PLL IC by the MCU
(X53-449: IC20) through the 3-line “SPSD0”, “SPSCLK0”,
“/TXPCS” serial bus. Whether the PLL IC is locked or not is
monitored by the MCU through the “LDT” signal line. If the
VCO is not the desired frequency (unlock), the “LDT” logic
is low.
Ref 16.8MHz
LDT
SPSCLK0
SPSD0
/TXPCS
Buffer
Q300
TX VCO/PLL
IC300
LPF
TX_CV
BPF
FIN
Loop filter
Fig. 4 Transmitter Main PLL IC circuit
2-4. Modulation level adjustment circuit
The Modulation level adjustment circuit adjusts the mod-
ulation waveform balance. This circuit consists of IC804,
IC603, IC604, IC605 and IC606.
The modulating signal comes from the Control unit
(X53-449) through the interface connector (CN800 Pin14).
The modulating signal is produced by the modulation low-
pitched tone to the transmitter modulation 16.8MHz PLL cir-
cuit and adds the high-pitched modulation to the transmitter
main PLL.
IC804 is an electronic volume control IC. It has 8 elec-
tronic volume control circuits. The modulation level adjust-
ment circuit uses 2 electronic volume control circuits in
IC804. The 1st electronic volume control circuit adjusts the
modulating signal and is fed to IC603 and the 2nd electronic
Fig. 2 Transmitter reference 16.8MHz PLL circuit
TX VCO
/PLL
MOD
PLL IC
X58-5100-10
Ref
10MHz
or 19.2MHz
LDT
IC602
SPSCLK0
SPSD0
/16_8PCS AMP
Q602
Buffer
Q603
AMP
IC604
AMP
IC603
16.8MHz
LPF
Loop filter
X600
MB
OSC
16.8MHz
CIRCUIT DESCRIPTION
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NXR-810
11
volume control circuit. The 2nd electronic volume control
circuit adjusts the modulating signal and is fed to IC606.
IC603 is an inverting amplifier for inverting the amplifi-
cation of the modulating signal. The output of IC603 and
the charge pump output of IC602 (Transmitter modulation
16.8MHz PLL IC) are synthesized by IC604 and is fed to
VCXO (X600).
IC606 is a non-inverting amplifier. The output of the 2nd
electronic volume control circuit is amplified by IC606 and is
fed to the transmitter main PLL circuit.
AMP
IC604
AMP
IC606
AMP
IC603
VREF
IC605
EVOL
IC804
X58-5100-10
X600
MB
MOD
CN800
MO
OSC
16.8MHz
TX VCO
/PLL
Fig. 5 Modulation level adjustment circuit
2-5. Front-end circuit
The front-end circuit consists of former LPF, former BPF
(D105, D106, D107 and D108), RF Low Noise Amplifier
(Q101), latter BPF (D100, D101, D103 and D104), and latter
LPF. The BPF covers frequency ranges 400 to 470MHz.
The former LPF, former BPF, latter BPF, and latter LPF at-
tenuate the unwanted signals and send only the necessary
signal to the first mixer.
LNA AMP
Q101
Buffer
IC100
Buffer
IC101
400~
470MHz
BPF
EVOL
IC804
BPF LPFHPFLPF RX ANT
CN101
400~
470MHz
Fig. 6 Front-end circuit
2-6. 1st-Mixer circuit
The filtered signal from the front-end circuit is hetero-
dyned with the first local oscillator signal from the PLL
frequency synthesizer circuit at the first mixer (IC300) to
become a 58.05MHz first intermediate frequency (IF) signal.
1st Local
341.95~411.95MHz
Mixer
IC300
400~470MHz
IF1
58.05MHz
Fig. 7 1st-Mixer circuit
2-7. IF circuit
The first IF signal is amplified by the IF Post Amp (Q301)
and passed through a four-pole monolithic crystal filter
(XF300) to reject adjacent channel signal. The filtered first
IF signal is amplified by the IF AGC amplifier (Q300) and
then applied to the IF system IC (IC403). The IF system IC
SW
450kHz
RSSI
CN802
AGC
58.05MHz
IF IC
IC403
IC405
SW
IC406 CF402
CF403
CF401
SW
IC408
SW
IC407
CF400
RSSI
IF2
AGC
IF1
2nd Lo
57.6MHz
IF AMP
IC404
IF AMP
IC400
MCF
XF300
IF AGC AMP
Q300
POST AMP
Q301
Diff AMP
IC401(B/2)
AMP
IC409(A/2,B/2)
Buffer
IC401(A/2)
Buffer
IC402
Fig. 8 IF circuit
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
12
provides a second mixer, AGC amplifier, and RSSI (Received
Signal Strength Indicator).
The second mixer mixes the first IF signal with the 57.6
MHz of the second local oscillator output and produces the
second IF signal of 450kHz.
The second IF signal is passed through the ceramic filter
(CF401, CF402 and CF403) to reject the adjacent channel
signals. The filtered second IF signal is amplified by the sec-
ond IF amplifier (IC404) and AGC amplifier (IC403).
The signal from the AGC amplifier is input to the AD con-
verter (X53-449: IC20) through the ceramic filter (CF400) and
operational amplifier (IC400 and X53-449: IC20).
2-8. Receiver PLL circuit (SUB unit)
■VCO
RX VCO circuit consists of two VCOs (VCO A X58-
509: Q352, VCO B X58-509: Q353). Those VCOs gener-
ate a 1st local signal. For the VCO oscillation frequency,
the 1st local signal is 341.95 to 411.95MHz. (VCO A:
341.95~376.95MHz, VCO B: 376.95~411.95MHz)
Those VCO oscillation frequency is determined by two
systems of voltage control terminals “CV” and “RXASSIST”.
The voltage control terminals, “CV” and “RXASSIST”,
are controlled by the PLL IC (X58-509: IC300) and the MCU
(X53-449: IC20) and the output frequency changes continu-
ously according to the applied voltage.
D355
D352
D358D359
SW Q350
Q351
RXVCOA/B
RX_CV
RXASSIST
80C
VO
VCO_A
Q352
Buffer
Q354
D357
D353
D360D361
VCO_B
Q353
Fig. 9 Receiver VCO circuit
■PLL IC (X58-509: IC300)
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 fre-
quency convergence time increases as the frequency dif-
ference increases when the set frequency is changed. To
supplement this, the MCU 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 approx. 3.0V.
The desired frequency is set for the PLL IC by the MCU
(X53-449: IC20) through the 3-line “SPSD0”, “SPSCLK0”,
“/RXPCS_TR” serial bus. Whether the PLL IC is locked or
not is monitored by the MCU through the “LDR” signal line.
If the VCO is not the desired frequency (unlock), the “LDR”
logic is low.
Ref 19.2MHz
LDT
SPSCLK0
SPSD0
/RXPCS
Buffer
Q300
RX VCO/PLL
IC300
LPF
RX_CV
LPF
FIN
Loop filter
Fig. 10 Receiver PLL circuit
2-9. AVR circuit
The 13.6V Power Source (+B) is provided through the
Connector (CN701) from the Final unit (X45-393). +B is con-
nected to the FET switch (Q702, Q703) and CN700. Q702
and Q703 are controlled by the “SBC” signal from the MCU
which is in the Control unit (X53-449). If “SBC” logic is
high, Q702 and Q703 turn on. The 13.6V power source (SB)
which is turned on by Q702 and Q703 is provided to the 8V
AVR IC (IC702) and CN700. CN700 is connected to the Con-
trol unit (X53-449) to provide the +B power source and the
SB power source.
IC702 supplies 8V to the VCO, 15V DC/DC converter IC
(IC701), AVR IC (IC700) and FET switches (Q700, Q701).
IC701 is a step-up switching regulator. IC701 regulates 8V
to 15V and supplies the 15V power source to the “assist cir-
cuit” and “front-end BPF tuning circuit”. The FET switches
(Q700, Q701) are controlled by the I/O expander IC (IC805).
When Q700 and Q701 turn on, the 8V power source is pro-
vided to the receiver section.
IC700 regulates 5V to 8V. The output of IC700 is pro-
vided to the FET switches (Q705, Q706) and AVR IC (IC703).
The FET switches (Q705, Q706) are controlled by the I/O
expander IC (IC805). When Q705 and Q706 turn on, the 5V
power source is provided to the receiver section, IF section
and IC704. IC704 regulates 5V to 3V. The 3V power source
is provided to the Mixer IC (IC300). IC703 regulates 5V to
3.3V. The output of IC703 is provided to the IF section.
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
13
2-10. Other circuit
■EEPROM
The EEPROM (IC802) has a data capacity of 2Kbit. It
stores the tuning data in frequency adjustment.
■Temperature sensor
The temperature sensor (IC800) monitors temperature
around the VCTCXO (X500).
■I/O expander
The I/O expander IC (IC805) controls the power sources,
fan, analogue switches, and the transmit power control cir-
cuit. IC805 is controlled by the MCU which is in the Control
unit (X53-449).
■Electronic volume control IC
The Electronic volume control IC (IC804) adjusts the
modulating signal, center frequency of the front-end BPF,
and the power of the RF final amplifier. IC804 is controlled
by the MCU which is in the Control unit.
3. Final unit
The RF final amplifier unit (X45-3930-10) amplifies the
transmitter power to a specified level.
This unit consists of the following circuits:
(1) Driver and Final power amplifier circuit
(2) CM coupler circuit
(3) Filter circuit
(4) APC circuit
(5) High temperature detector circuit
(6) FAN action control circuit
(7) AVR circuit
3-1. Driver and Final power amplifier circuit
The transmit signal from the TX IN terminal CN1 of the
Final unit (X45-393) is amplified by Q1, Q2 and Q3, and is
passed to the final stage Q4. The signal amplified by the
final stage Q4 passes through the CM coupler circuit and
filter circuit, and is then fed to the antenna.
80C_1
Ripple Filter
Ripple Filter
Ripple Filter15V DC/DC
IC701
SW
RXC
Q700,Q701
SW
RXC
Q705,Q706
SW
SBC
SB
Q702,Q703
CN701
+B
from Final unit
(X45-393 A/3)
+B,SB
to Control unit
(X53-449)
3V AVR
IC704
3.3V AVR
IC703
Ripple Filter
80C
80C_2
150C_1
150C_2
80R
5V AVR
IC700
8V AVR
IC702
50C
50R
30R
33C
CN700
Fig. 11 AVR circuit
Fig. 12 Driver and Final power amplifier circuit
CN801
CN1
PLIM
FDT
8TC
FAN
ASWC
RAMP
DC AMP
IC202(A/2)
TX ANT
LPF CM coupler
Vcont
REV DET FW DET
Auto power control
+B 80T
80T
FW DET
D3
PRE AMP
IC201(A/2)
Limiter AMP
IC201(B/2)
Drive AMP
Q1
Drive AMP
Q2
Final AMP
Q4
Drive AMP
Q3
Temp1
TH201
Buffer AMP
IC202(B/2)
REV DET
D4
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
14
3-2. CM coupler circuit
The CM coupler circuit is a line for detecting forward
wave and reflected wave. Forward wave is detected by D1,
and is converted into DC voltage. If an abnormal antenna
load is connected, reflected wave is detected by D3 and
converted into DC voltage.
3-3. Filter circuit
This circuit removes harmonics from the transmitter out-
put and sends filtered signals to the antenna.
3-4. APC circuit
The automatic transmission power control (APC) circuit
stabilizers the transmitter output power at a pre-determined
level. DC voltage from the CM coupler circuit is amplified by
the DC amplifier IC202 (1/2). IC202 (2/2) compares the APC
control voltage (RAMP) generated by the MCU (X53-449)
and the DC amplifier IC201 (1/2, 2/2) with the output voltage
from IC202 (1/2) to control the gate voltage for amplifier Q2,
Q3 and final amplifier Q4.
3-5. High temperature detector circuit
To prevent thermal destruction of amplifier Q3 and final
amplifier Q4, this circuit reduces the APC control voltage
(RAMP) when the temperature of the amplifier Q3 and final
amplifier Q4 rises. The MCU detects the temperature with
the thermistor (TH201) and controls the APC voltage (RAMP).
3-6. FAN action control circuit
The FAN action control circuit consists of the FAN and
switching transistor Q207. It is controlled by the MCU (X53-
449). If the FAN action is set to “Temperature”, the cooling
fan is turned ON or OFF according to the temperature. If the
FAN action is set to “Continuous”, the cooling fan operates
continuously, but Q207 stays ON.
3-7. AVR circuit
The 13.6V power source (+B) is provided through con-
nector CN201 to the Final unit (X45-393 A/3). +B is con-
nected to CN203 to supply the 13.6V power source for the
TX-RX unit (X57-795). +B is a power source for the “final
amplifier”, “drive amplifier” and fan. IC203 regulates the +B
voltage to 8V. This 8V power source is connected to the FET
switches Q203, Q204, Q205, and Q206. Q204 and Q206
are controlled by the “8TC” signal from the I/O expander IC
which is in the TX-RX unit (X57-795). If “8TC” logic is high,
Q204 and Q206 turn on and supply the 8V power source
to the APC circuit and pre drive amplifiers. Q203 and Q205
are controlled by the “ASWC” signal from the I/O expander
IC which is in the TX-RX unit (X57-795). If “ASWC” logic
is high, Q203 and Q205 turn on and supply the 8V power
source to the antenna switch circuit.
Drive AMP
SW
8TC
Q204,Q206
SW
ASWC
Q203,Q205
CN201
+B
from Final unit
(X45-393 B/3)
+B
to TX-RX unit
(X57-795)
Final AMP
FAB
8V AVR
IC203
80T
80SW
CN203
Fig. 13 AVR circuit
4. Control unit
The Control unit (X53-4490-10) consists of the following
circuits:
(1) MCU circuit
(2) Memory circuit
(3) DSP circuit
(4) Squelch circuit
(5) Power supply circuit
(6) Power Supply Voltage Monitoring Circuit
(7) 18.432MHz clock circuit
(8) Audio circuit
(9) Other circuit
4-1. MCU circuit
The MCU (IC20) is a 32bit RISC processor, equipped with
a peripheral function and ADC/DAC.
This MCU operates at a 18.432MHz clock and 3.3V/1.5V
DC.
It controls the flash memory, SRAM, DSP, receive circuit,
transmitter circuit, and control circuit.
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
15
4-2. Memory circuit
The Memory circuit consists of the MCU (IC20), the
SRAM (IC9), and the flash memory (IC3).
The flash memory has a capacity of 32Mbit that contains
the transceiver control program for the MCU and stores the
data. It also stores the data for transceiver channels and
operating parameters that are written by the FPU. This pro-
gram can be easily written from external devices.
The SRAM has a capacity of 1Mbit that contains work
area and data area.
■Flash memory
Note: The flash memory stores the data that is written by
the FPU, tuning data (Deviation, Squelch, etc.), and firm-
ware program.
■SRAM (static memory)
Note: The SRAM has a 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.
4-3. DSP circuit
The DSP circuit consists of a DSP (IC6) and processes
the base band signal. The DSP operates on an external clock
of 18.432MHz (the same as IC20). The I/O section operates
at 3.3V and the core section operates at 1.6V. The DSP car-
ries out the following processes:
■Digital processing
• 4Level FSK and Baseband filter processing
• Vocoder processing between audio codec and modula-
tion/demodulation
• CAI processing, such as error correction encoding/decod-
ing and interleaving
• AFC loop control
• Frame synchronization and Time tracking
• Data scrambling
■Analog FM processing
• Pre-emphasis/De-emphasis
• QT/DQT encoding/decoding
• DTMF encoding/decoding
• Compressor/Expander processing
• Voice scrambler processing
■Audio or Modulation function
• Transmit/Receive audio filtering processing
• Microphone amplifier AGC processing
• Audio soft mute processing
• Modulation level processing
• Squelch Filtering
■Other function
• Voting tone
• CWID
• Courtesy tone
• Repeater operating
• Analog/Digital Mixed mode
4-4. Squelch circuit
The Squelch circuit amplifies the demodulated noise sig-
nal from IC6 after filtering through the BPF circuit. The pro-
cessed digital noise signal is applied to CODEC IC14, and is
converted from digital to analog. The amplified signal is then
converted to a DC signal by the detection circuit. The con-
verted signal is fed back to IC20.
Squelch
DAC
IC14
/PDN,
LRCLK,
SDTI,
BICLK
Buffer
IC16
VCTCXO
X1
(18.432MHz)
MAIN_CLK
XTAL_IN
ADC1
BSHIFT
/PCS_DSP
/SYMTIM, /DINT, /DWUP, FSDET, /HINT
MCSCKAF, /MCCSAF, MCDIAF, MCDOAF
/MCCSXCN, /MCCSRCN, MCDICN,
MCDOCN, MCSCKCN
A[0~17], D[0~7],
/RD, /WR, /CS2
A[0~21], D[0~15],
/RD, /WR, /CS0, /WP
A[0~20], D[0~15], /RD,
/WR, /HRDY, /CS3, /HDS2
VREF
AMP
IC13(A/2,B/2)
AMP
IC15(A/2)
AMP
Q4
LDR
/DRST
/FRST /FRST
/DRST
33M 16M
33BU
33M 33M 33A15M
FLASH
IC3
SRAM
IC9
DSP
IC6
MCU
IC20
Fig. 14 Control circuit
4-5. Power supply circuit
The X53-449 circuit consists of IC301, IC302, IC303,
IC304, IC305 and IC306.
IC301 is a DC/DC converter that converts 13.6V to 6.0V.
This 13.6V voltage is supplied from TX-RX unit (X57-795).
IC302 is connected to IC301 and regulates the voltage
to 5.0V. IC303, IC304, IC305 and IC306 are connected to
IC301. IC303 and IC306 are 3.3V voltage regulators. IC304
is a 1.5V regulator IC, and IC305 is a 1.6V regulator IC.
CN302 is the connector for the lithium battery. The
lithium battery is used to back up the SRAM and RTC data
when no external DC power source is available.
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
16
4-6. Power supply voltage monitoring circuit
The X53-449 circuit consists of IC307, IC308, D303 and
Q301.
IC308 is a voltage detect IC and is used to generate the
“/RST” signal for the MCU (IC20).
This “/RST” signal is connected to the hardware reset
pin of MCU (IC20).
IC307 is a voltage detect IC and is used to generate the
“/BINT” signal for the MCU (IC20).
This “/BINT” signal is connected to the hardware inter-
rupt pin of MCU (IC20). The software of the MCU (IC20)
runs to the sleep-mode to use the “/BINT” signal.
D303 and Q301 are used to generate the “OVRB” signal
for the MCU (IC20). The software of the MCU (IC20) runs to
the sleep-mode to use the “OVRB” signal.
SW
SW
CN301
DC-DC
IC301
RESET
IC308
AVR
IC302
AVR
IC303
60DC
33M
AVR
IC305
16M
AVR
IC304
15M
/BINT
IC307
/BINT
/OVRB
Q301
OR
Q401
/OVRB
AVR
IC306
33A
50M
/RST
Q303 33BU
Q402
AMP_B
AMP_SW
B
SB
Fig. 15 Power supply circuit
4-7. 18.432MHz clock circuit
The 18.432MHz clock is provided to the MCU (IC20),
DSP(IC6), and DAC (IC14) of the Squelch circuit.
4-8. Audio circuit
■Audio amplifier circuit
The audio amplifier circuit is located in the control sec-
tion of the Control unit (X53-449). The 4W output audio
power is available from the pin15 TEST/SPKR connector
“SPO”, “SPG” on the rear panel to the external speaker in
the case of a power supply voltage of 13.6V and a 4Ωload.
■Microphone circuit
The signal from the microphone is passed through the
AGC circuit located in the Display unit (X54-358 A/2) so that
it may not saturate. This circuit consists of IC501, D501,
D502 Q501, and Q502. The AGC controls the amplifier gains
using the detected audio signal depending on the positive
and negative peaks of the signal amplitude. The audio sig-
nal goes to the control section of the Control unit (X53-449)
from the Display unit (X54-358 A/2).
■
Modulation circuit (Analog/Digital signal processing)
In the case of the Analog Signal Processing mode, the
transmitting audio signal is amplified by IC405 (C/4), input to
the MICADCO terminal of the MCU (IC20), and audio pro-
cessed by DSP (IC6). The processed audio signal from the
MODDAC terminal of IC20 is passed through an anti-aliasing
filter at IC404 (A/2), and is then amplified to a sufficient level
by IC404 (B/2), and amplified by the summing (TD) amplifier.
The Digital Signal Processing mode is the same as the Ana-
log Signal Processing mode.
4-9. Other circuit
■Real-time clock
The clock function is based on a real-time clock IC (IC17).
When the power supply is off, it is backed up by an internal
secondary lithium battery.
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
17
5. Display unit
The Display unit (X54-3580-20) is the same circuit as
X54-3580-20, used in TKR-750/850/751/851.
The Display unit (X54-3580-20) consists of the following
circuits:
(1) LED circuit
(2) Key switch circuit
5-1. LED circuit
The display circuit consists of various types of LEDs:
7-segment type D506 and D507 (red), D503 (red: transmis-
sion), D504 (green: busy), D505 (green: power on).
IC502 to IC505 are shift registers that convert MCU se-
rial data to parallel data and turn on the LEDs.
5-2. Key switch circuit
There are PF key 1 to PF key 6 on the Display unit. Using
these key switches, mode settings are available.
The logic signals pushing these key switches are entered
directly into the MCU (IC20).
Fig. 16 Modulation circuit (Analog/Digital signal processing)
INT_SP
EXT_SP
SPO
SPI
SPO
RD
RD
RA
TD
TA
MOD
MOD
IF
signal
MIC
DAC
IC412
DAC
IC412
DAC
IC412
Audio_AMP SW
IC402
AMP_SW
AMP_B
MICADC0
MICADC1
MODDAC
SPDAC
PWM1
IFR
ADC1
LPF
IC501 IC405
(C/4)
IC404
(B/4)
IC404(A/4)
CR-LPF
LPF
LPF
DET
LPF
MCU
IC20
Squelch DAC
IC14
DSP
IC6
CIRCUIT DESCRIPTION
Confidential 2009.11.30

NXR-810
18
COMPONENTS DESCRIPTION
FINAL UNIT (X45-3930-10)
Ref. No. Part Name Description
IC201,202 MOS-IC DC amplifier
IC203 Analogue IC Voltage regulator
Q1 Transistor RF amplifier
Q2 FET RF amplifier
Q3 FET TX drive amplifier
Q4 FET Final amplifier
Q203~206 FET DC switch
Q207 Transistor DC switch
D1~3 Diode RF detector
D6,7 Diode RF switch
D8 Surge absorber Surge protection
D201 Zener diode Voltage reference
D202 Surge absorber Surge protector
D203 Diode Surge protector
D301 Diode Protect of reverse connection
CONTROL UNIT (X53-4490-10)
Ref. No. Part Name Description
IC3 ROM IC Flash memory
IC4,5 MOS-IC RS-485 transceiver
IC6 Microprocessor IC DSP
IC7,8 MOS-IC Buffer
IC9 SRAM IC SRAM
IC10,11 MOS-IC Buffer
IC12 MOS-IC AND gate
IC13 MOS-IC AF amplifier
IC14 MOS-IC CODEC
IC15 MOS-IC AF amplifier
IC16 MOS-IC Buffer amplifier
IC17 MOS-IC RTC IC
IC18,19 MOS-IC Buffer
IC20 MOS-IC MCU
IC21 MOS-IC RS-232C driver/receiver
IC22 MOS-IC I/O expander
IC23 MOS-IC NAND gate
IC24 MOS-IC AND gate
IC25 MOS-IC OR gate
IC26 MOS-IC AND gate
IC27,28 MOS-IC AF amplifier
IC301 Analogue IC DC/DC converter
IC302 MOS-IC Voltage regulator
IC303~306 Analogue IC Voltage regulator
IC307 MOS-IC Voltage regulator
IC308 Analogue IC Voltage regulator
IC401 MOS-IC NAND gate
Ref. No. Part Name Description
IC402 MOS-IC Analog switch
IC403 Bi-polar IC AF power amplifier
IC404~406 Bi-polar IC OP AMP
IC407 MOS-IC Analog switch
IC411 Bi-polar IC OP AMP
IC412 MOS-IC DC/AC converter
Q4 Transistor DC switch
Q5 FET DC switch
Q6~10 Transistor Buffer amplifier
Q301 Transistor DC switch
Q302 FET DC switch
Q303 Transistor Power switch
Q401 Transistor Power switch
Q402 FET Power switch
Q403 Transistor Power switch
Q404,405 Transistor AF mute switch
D1,2 Diode Detector
D3~12 Diode Surge protector
D13 Zener diode Surge protector
D14~16 Diode Surge protector
D18 Diode Surge protector
D20 Diode Surge protector
D22,23 Diode Surge protector
D24 Zener diode Surge protector
D26 Diode Surge protector
D28,29 Diode Surge protector
D30 Zener diode Surge protector
D31 Diode Surge protector
D32 Zener diode Surge protector
D35 Diode Surge protector
D36 Zener diode Surge protector
D37 Varistor Current protector
D301,302 Diode Surge protector
D303 Zener diode Voltage reference
D304,305 Diode Surge protector
D401 Diode Diode switch
DISPLAY UNIT (X54-3580-20)
Ref. No. Part Name Description
IC501 MOS IC MIC amplifier
IC502~505 MOS IC Shift register
IC506,507 MOS IC Voltage regulator
Q501,502 Transistor Level controller
Q503,504 FET DC switch
Q506 Transistor DC switch
Q507 FET DC switch
Confidential 2009.11.30

NXR-810
19
Ref. No. Part Name Description
Q508~511 Transistor DC switch
Q512~514 FET DC switch
Q516~519 FET DC switch
Q521~525 FET DC switch
D501,502 Diode AF detector
D503~507 LED LED
D508~514 Diode Surge absorption
D601,602 Diode Surge absorption
D603 Varistor Current protector
TX-RX UNIT (X57-7950-10)
Ref. No. Part Name Description
IC100,101 MOS-IC OP AMP
IC200,201 MOS-IC OP AMP
IC203 MOS-IC Buffer
IC300 MOS-IC Mixer
IC400 MOS-IC IF amplifier
IC401 MOS-IC Buffer amplifier
IC402 MOS-IC OP AMP
IC403 MOS-IC IF system
IC404 MOS-IC IF amplifier
IC405~408 MOS-IC Analog switch
IC409 MOS-IC Buffer amplifier
IC500 MOS-IC Buffer amplifier
IC501 MOS-IC OP AMP
IC600,601 MOS-IC Buffer
IC602 MOS-IC 16.8MHz PLL
IC603~607 MOS-IC OP AMP
IC608 MOS-IC AF amplifier
IC700~702 Analogue IC Voltage regulator
IC703,704 Bi-polar IC Voltage regulator
IC800 MOS-IC Temperature sensor
IC801 MOS-IC OP AMP
IC802 ROM IC EEPROM
IC803 MOS-IC Buffer amplifier
IC804 MOS-IC Digital potentiometer
IC805 MOS-IC I/O expander
IC806 MOS-IC Analog switch
Q100 Transistor DC switch
Q101 Transistor RF amplifier
Q200,201 Transistor DC switch
Q202,203 Transistor RF amplifier
Q300 FET RF amplifier
Q301 Transistor RF amplifier
Q500 FET DC switch
Ref. No. Part Name Description
Q501 Transistor RF amplifier
Q502,503 FET RF amplifier
Q504 Transistor RF amplifier
Q505~507 FET DC switch
Q600 FET DC switch
Q601 Transistor DC switch
Q602,603 Transistor RF amplifier
Q604,605 Transistor DC switch
Q606 Transistor RF amplifier
Q607 FET DC switch
Q700~702 FET DC switch
Q703 Transistor DC switch
Q704~706 FET DC switch
Q800 FET DC switch
D100,101 Varicap Frequency control
D103~108 Varicap Frequency control
D200 Diode DC switch
D500,501 Zener diode Limiter
D503 Diode Detector
D504,505 Diode RF switch
D600 Diode DC switch
D601 Diode RF switch
D801 Diode DC switch
RX VCO/PLL UNIT (X58-5090-10)
Ref. No. Part Name Description
IC300 IC PLL
Q300 Transistor Buffer amplifier
Q350,351 FET DC switch
Q352,353 FET VCO OSC
Q354 Transistor Buffer amplifier
D352,353 Varicap Frequency control
D355 Varicap Frequency control
D357~361 Varicap Frequency control
TX VCO/PLL UNIT (X58-5100-10)
Ref. No. Part Name Description
IC300 IC PLL
Q300 Transistor Buffer amplifier
Q350,351 FET DC switch
Q352,353 FET VCO OSC
Q354 Transistor Buffer amplifier
D352,353 Varicap Frequency control
D355 Varicap Frequency control
D357~361 Varicap Frequency control
COMPONENTS DESCRIPTION
Confidential 2009.11.30

NXR-810
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
C: China 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
1 3A
✽A62-0933-23 PANEL ASSY (INNER)
2 1A A62-1146-04 PANEL (TX-RX)
3 1B A62-1147-04 PANEL (FINAL)
4 1D A62-1148-03 PANEL (OUTER)
5 3C
✽A62-1174-03 PANEL ASSY
6 2C
✽A82-0077-02 REAR PANEL
8 1F B10-2635-04 FRONT GLASS ACCESSORY
9 1F B11-1259-04 FILTER ACCESSORY
10 1F
✽B62-2199-00 INSTRUCTION MANUAL
11 2C,3D
✽B72-2602-04 MODEL NAME-PLATE
13 1B E30-3414-05 DC CORD (EXT DC IN)
14 1C E30-3418-15 ANTENNA CABLE (RX IN)
15 1E E30-3427-35 DC CORD ACCESSORY
16 1D E30-7528-15 ANTENNA CABLE (TX OUT)
17 1A
✽E30-7689-05 TRUNK CABLE (X57-X53)
18 1C
✽E30-7690-05 ANTENNA CABLE (REF IN)
19 1E E31-3228-05 15P PLUG ACCESSORY
20 1B
✽E37-0902-15 LEAD WIRE WITH TERMINAL (DC+)
21 1B
✽E37-0903-15 LEAD WIRE WITH TERMINAL (DC-)
22 3A E37-0905-15 LEAD WIRE WITH CONNECTOR (SP)
23 3A E37-0906-05
LEAD WIRE WITH CONNECTOR (X53-X54)
24 3A,2B E37-0908-05 LEAD WIRE WITH CONNECTOR (11P)
25 3A,1B E37-0911-05 LEAD WIRE WITH CONNECTOR (3P)
26 2B
✽E37-0912-15 LEAD WIRE WITH MINIPIN PLUG
27 2C E37-0913-05
LEAD WIRE WITH CONNECTOR (ACC15P)
28 2A E37-1340-15 FLAT CABLE
29 2C E37-1376-05
LEAD WIRE WITH CONNECTOR (DSUB25P)
30 2C
✽E37-1473-05
LEAD WIRE WITH CONNECTOR (X45-X53)
32 1C,1E F05-1537-05 BLADE FUSE (15A/32V) ACCESSORY
33 2C F09-0445-05 CAP (DSUB)
34 1C F09-0471-15 FANMOTOR
- F10-2409-04 SHIELDING CASE (X57 TX-RX PCB)
36 1B
✽F10-3129-03 SHIELDING CASE (X45 FINAL PCB)
38 2A,2B G02-0576-14 FLAT SPRING
39 2B G02-0829-14 FLAT SPRING (RX VCO)
40 3A G02-0885-13 EARTH SPRING (X54 DISPLAY PCB)
41 1B G02-0894-04 EARTH SPRING (X45:FINAL FET)
42 2B G02-1831-04 EARTH SPRING (REAR BOTTOM)
43 1C G02-1832-04 EARTH SPRING (REAR TOP)
44 1B
✽G02-1855-04 FLAT SPRING (X45:AVR)
45 1B
✽G02-1856-04 EARTH SPRING (FUSE)
46 2B,3B G10-1263-04 FIBROUS SHEET (CHASSIS)
47 3C,2D G10-1264-04 FIBROUS SHEET (PANEL ASSY)
48 3B G10-1344-04
FIBROUS SHEET (EARTH SPRING,SHORT)
49 3B G10-1345-04 FIBROUS SHEET (EARTH SPRING,LONG)
50 1F G13-1801-04 CUSHION (40X40X5) ACCESSORY
51 1F G13-1802-04 CUSHION (40X40X10) ACCESSORY
52 2B G13-1886-04 CUSHION (BNC)
54 1E H25-0029-04 PROTECTION BAG (60/110/0.07)
55 1F H25-0747-04 PROTECTION BAG (250X350)
56 1E H25-0762-04 PROTECTION BAG (120X300)
57 1F H25-2328-04 PROTECTION BAG (80/250/0.07)
58 1F
✽H52-2335-02 ITEM CARTON CASE
60 1E J02-0475-05 FOOT ACCESSORY
61 1E J02-0492-04 FOOT (RUBBER) ACCESSORY
62 2B
✽J19-5540-03 HOLDER (TRUNK CABLE)
63 1B J21-8467-04
MOUNTING HARDWARE (X45:DRIVE FET)
64 1F J21-8559-04 MOUNTING HARDWARE ACCESSORY
65 2C
✽J21-8616-04
MOUNTING HARDWARE (X45:MODULAR)
66 1E J59-0302-05 GROMMET ACCESSORY
67 1B,1E J61-0307-05 BAND
69 1E K01-0418-15 HANDLE ACCESSORY
70 3A K29-5389-03 KNOB (VOLUME)
71 3A K29-9106-04 KNOB (POWER)
72 3A K29-9370-02 KEY TOP
74 1E L79-1419-05 LINE FILTER (ACCESSORY DC CORD)
75 1B L79-1854-05 LINE FILTER (DC CORD:EXT DC IN)
76 1B L79-1855-05 LINE FILTER (DC+,DC-)
A 2C N09-2292-05 HEXAGON HEAD SCREW (DSUB)
B
1C,2C,2D N30-2606-48 PAN HEAD MACHINE SCREW (ANT)
C 2A,1E N30-4006-48
PAN HEAD MACHINE SCREW (CHAS,ACC)
D 2B,2C N30-4014-48 PAN HEAD MACHINE SCREW (CHASSIS)
E 1C N30-4020-43 PAN HEAD MACHINE SCREW (FAN)
F 1C,2C N32-3006-48
FLAT HEAD MACHINE SCREW (R PANEL)
G 3B N32-4008-43 FLAT HEAD MACHINE SCREW (F PANEL)
H 1A,1B,1E N35-3006-43 BINDING HEAD MACHINE SCREW (TOP,ACC)
J 1C N35-4006-43 BINDING HEAD MACHINE SCREW (TOP)
K 1B,3B N67-3008-48 PAN HEAD SEMS SCREW (X53:AUDIO IC)
L 1C,2C N80-2608-43 PAN HEAD TAPTITE SCREW (FUSE)
M 3A N87-3005-43 BRAZIER HEAD TAPTITE SCREW (SP)
N
3A,1B,2B N87-3006-48 BRAZIER HEAD TAPTITE SCREW (PCB)
78 3A T07-0770-35 SPEAKER
80 3A W09-0971-05 LITHIUM CELL
- 490-0174-05 ADHESIVE TAPE
C1 CK73GB1H471K CHIP C 470PF K
C2 CC73GCH1H060D CHIP C 6.0PF D
C3 CK73GB1H471K CHIP C 470PF K
C4 CK73GB1H104K CHIP C 0.10UF K
C5,6 CK73GB1H471K CHIP C 470PF K
C8 CK73GB1H471K CHIP C 470PF K
C9 CC73GCH1H080D CHIP C 8.0PF D
C10 CC73GCH1H120J CHIP C 12PF J
C12 CK73GB1H471K CHIP C 470PF K
C13,14 CK73GB1H104K CHIP C 0.10UF K
C16-18 CK73GB1H471K CHIP C 470PF K
C20 CK73FB1H471K CHIP C 470PF K
C22 CC73FCH1H120J CHIP C 12PF J
C23 CK73FB1H471K CHIP C 470PF K
C27,28 CC73FCH1H060B CHIP C 6.0PF B
C29 C93-0566-05 CHIP C 33PF J
C31 C93-0599-05 CHIP C 470PF K
C32 CK73GB1H471K CHIP C 470PF K
NXR-810
FINAL UNIT (X45-3930-10)
NXR-810
FINAL UNIT (X45-3930-10)
Confidential 2009.11.30