Vertex Standard VXR-9000EV Service Manual

Rack Mount Repeater

VXR-9000EV

Service Manual

2004 VERTEX STANDARD CO., LTD. EC044N95A

©

VERTEX STANDARD CO., LTD.

4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan

VERTEX STANDARD

US Headquarters

10900 Walker Street, Cypress, CA 90630, U.S.A.

YAESU EUROPE B.V.

P.O. Box 75525, 1118 ZN Schiphol, The Netherlands

YAESU UK LTD.

Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.

VERTEX STANDARD HK LTD.

Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong

Introduction

This manual provides the technical information necessary for servicing the VXR-9000 Rack Mount Repeater.

Servicing this equipment requires expertise in handing surface-mount chip components. Attempts by non-qualified
persons to service this equipment may result in permanent damage not covered by the warranty, and may be illegal in
some countries.

Two PCB layout diagrams are provided for each double-sided board in this transceiver. Each side of the board is
referred to by the type of the majority of components installed on that side (“Side A” or “Side B”). In most cases one
side has only chip components (surface-mount devices), and the other has either a mixture of both chip and leaded
components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.

As described in the pages to follow, the advanced microprocessor design of the VXR-9000EV allows a complete
alignment of this transceiver to be performed without opening the case of the radio; all adjustments can be performed
from the personal computer, using with the Vertex Standard VPL-1 Programming Cable and CE60 Software.

While we believe the information in this manual to be correct, Vertex Standard assumes no liability for damage that
may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any
inconsistencies in the technical information would be appreciated.

Contents

Specifications ........................................................... A-1

DSUB 15-pin Accessory Connector ...................... B-1

Exploded View & Miscellaneous Parts ............... C-1

Block Diagram ......................................................... D-1

Connection Diagram ............................................... E-1

Circuit Description ...................................................F-1

Alignment ................................................................ G-1

Board Units (Schematics, Layouts & Parts)

MAIN Unit .......................................................... H-1

CNTL Unit ............................................................ I-1

PANEL Unit .......................................................... J-1

25W PA Unit ........................................................ K-1

REG Unit .............................................................. L-1

Specifications

General

Frequency Range: Type A : 134 - 160 MHz, Type C : 146 - 174 MHz
Number of channel:32
Channel Spacing: 5 kHz/6.25 kHz, 2.5 kHz/6.25 kHz
Operating Voltage: 13.6 V DC ±10 %
Current Drain: 8 A Maximum
Duty Cycle: Receive : 100 %

Transmit : 100 % (@20 W output)

Frequency Stability: 1.5 ppm

1.0 ppm (30min after wake up)

Operating Temperature Range: –25 °C to +60 °C
Dimensions (W x H x D): 483 x 88 x 343 mm
Weight (Approx.): 9.7 kg

Receiver

Antenna Impedance: 50 ohm
Antenna Connector: Type-BNC
Receiver Type: Double-Conversion Superheterodyne
Sensitivity: 0.25 µV (12dB SINAD), 0.35 µV (20dB Noise Quieting)
Selectivity: 82 dB (Wide), 68 dB (Narrow)
Intermodulation: 72 dB (Wide), 63 dB (Narrow)
Image Rejection: 90 dB
Squelch Threshold: 0.4 µV (Adjustable)
Audio Output: 4 W @4 ohm
Audio Distortion:< 3 %
Hum and Noise: >50 dB (Wide), >45 dB (Narrow)
Audio Frequency Response: De-emphasis : 6 dB/oct (From 300 Hz to 3 kHz)
Conducted Spurious: <–80 dBm

Transmitter

RF Output Power: 25/10/5 W (High/Mid/Low)
Antenna Impedance: 50 ohm
Antenna Connector: Type-N
Modulation Type: 16K0F3E/11K0F3E
System Deviation: ±5.0 kHz (Wide), ±2.5 kHz (Narrow)
Hum and Noise: >50 dB (Wide), >45 dB (Narrow)
Microphone Sensitivity:5 mV
Audio Frequency Response: Pre-emphasis : 6dB/oct (From 300 Hz to 3 kHz)
Spurious Emission: –36 dBm @<1 GHz, –30 dBm @>1 GHz
Audio Distortion: 3.0 % @1 kHz
Microphone Impedance: 600 ohm

Specifications subject to change without notice or obligation.

A-1

DSUB 25-pin Accessory Connector

The VXR-9000EV repeater is provided with a 25-pin DB­25F female connector for interconnections to
accessories.Use a DB-25M 25-pin male connector to con­nect accessories to the repeater. The pins on the accessory
connector are explained in detail as follows:

DB-25 PIN NUMBERING

Pin 1: GND

Chassis ground for all logic levels and power supply re­turn.

Pin 2: +13.6 V

[

POWER SUPPLY
This pin provides 13.6 Volts, 2.0 A, DC from the repeater
supply. There is a internal 3 A fuse to prevent damage to
the repeater.

]

Pin 3: TX AF IN

[

ANALOG TRANSMITTER INPUT] (VOICE BAND: 300 ~ 3,000 HZ

This pin is s audio input. Input impedance is 600 Ohms.
This audio is injected before the splatter filter stage, so
excess signal input levels are clipped.

Pin 5: TX ATT

This output is intended for controlling an external coaxial
switching relay. It is an open drain output which can sink
approx. 1.5 A when active. The delay time which is be­tween the repeater cause to transmit mode and this port
switches to ground can be programmed by your VERTEX
STANDARD dealer.

Pin 6: DISC OUT

[

NALOG OUTPUT

A

Received signals with full system deviation produce 350
mVrms audio at this pin. The output impedance is 600
Ohm, and is extracted before the de-emphasis and squelch
circuitry. Use shielded cable to connect to this pin, and
connect the shield to GND.

] (

IDE-BAND: 0 ~ 3,000 HZ

W

)

Pin 7: N.C.

No connection.

Pin 8: RSSI

[

ANALOG OUTPUT]

A DC voltage proportional to the strength of the signal
currently being received (Receiver Signal Strength Indi­cator) is provided on this pin. This low impedance output
is generated by the receiver IF sub-system and buffered
by an internal op-amp. Typical voltages are graphed as
follows:

(DC V)

e

2.5

g
a

t
l

2.0

o
V
t
u

1.5

p
t

u

1.0

O
I
S

0.5

)

S
R

0

–60 –100 –110 –120 (dBm)–70 –80 –90

Input Signal Level

Use shielded cable to connect to this pin, and connect the
shield to GND.

Pin 4: TONE IN

[

TRANSMITTER INPUT] (SUB-AUDIBLE BAND: 5 ~ 250 HZ

This pin is sub-audible tone produces 10% of full system
deviation. The nominal input voltage is 77.5 mVrms. The
input impedance is@600 Ohms, and has a flat response
characteristic (repeater deviation is constant for a given
signal level over the frequency range of 5 ~ 250 Hz). In­jecting too high a voltage here causes over-deviation of
CTCSS or DCS, degrading performance. Use shielded
cable to connect to this pin, connecting the shield to GND.

)

Pin 9: COAX. SW

[

LOGIC OUTPUT (ACTIVE LOW

This output is intended for controlling an external coaxial
switching relay. It is an open drain output which can sink
approx. 1.5 A when active. This signal only switches if the
repeater has been programmed for “SIMPLEX” mode. If
programmed for “DUPLEX,” the signal remains open
(high impedance) at all time.

)]

B-1

DSUB 25-pin Accessory Connector

Pin 10, 13, 15, 16, 17, 18, 19, 21:
PROGRAMMABLE I/O “0” ~ ”7”

The VXR-9000 provides eight ports (PIO)
that can be programmed for various input
or output signals, or for control functions.
Each port may be programmed as to its
function, its status (input or output), and
its logic (for output ports only). Each port
activates while the repeater is operating
in the “Remote” mode. See Tables on the
next page for detail regarding the input and output sig­nals.

Pin I/O Port

10 6
13 7
15 4
16 3
17 2
18 1
19 0
21 5

Pin 11: NSQ DET

This is an open-collector, active-low output capable of
sinking about 10 mA. It indicates that the receiver squelch
is open. If the squelch control is properly set, this indi­cates a carrier on the receiver channel.

Pin 12: EXT PTT

This input is internally pulled up to 5 VDC. When pulled
low by an external device, it keys the repeater transmitter
while the repeater is operating in the “Remote” mode.
Avoid voltage in excess of 5 V on this pin, or internal dam­age to the microprocessor on the repeater CNTL Unit may
result.

Pin 14, 20: GND

Chassis ground for all logic levels and power supply re­turn.

Pin 22: RXD LOW

[

A

NALOG OUTPUT FOR DATA COMMUNICATIONS

(

300 ~ 3,000 Hz

This pin is an output for low speed receiving data signals
(typically 1200 bps), with the data being extracted after
the de-emphasis and low pass filter stages.

)

]

Pin 23: RXD HIGH

[

D

IGITAL OUTPUT FOR DATA COMMUNICATIONS

(

Max.: 5 kHz

This pin is an output for high speed receiving data signals
(typically 9600 bps), with the data being extracted imme­diately after the discriminator (prior to any de-emphasis).

)

]

Pin 24: TXD LOW

[

ANALOG INPUT FOR DATA COMMUNICATIONS

(

300 ~ 3,000 Hz

This pin is intended to be used as a low speed data signal
input to the repeater (typically 1200 bps). This digital data
signal is injected before the transmitter pre-emphasis and
limiting stages, so excess signal input levels are clipped.

)

]

Pin 25: TXD HIGH

[

DIGIT AL INPUT FOR THE DATA COMMUNICATIONS

(

0 ~ 5 kHz

This pin is intended to be used as a high speed digital
data signal input to the repeater (typically 9600 bps). This
digital data signal is injected after the transmitter splatter
filter stage.

)

]

B-2

DSUB 25-pin Accessory Connector

PROGRAMMABLE I/O PORT INPUT ITEMS

Item

Bin_CH_0

Bin_CH_1

Bin_CH_2

Bin_CH_3

Bin_CH_4

Channel_Down

Channel_Up

Compander_On

Compander_Off

Compander_Toggle

CTCSS/DCS

CTCSS/DCS

CTCSS/DCS

CTCSS/DCS

CTCSS/DCS

CTCSS/DCS

Two_Tone_Dec_On

Two_Tone_Dec_Off

Two_Tone_Dec_Toggle

CW_ID_On

CW_ID_Off

CW_ID_Toggle

CW_ID_Single

CW_Message_1

CW_Message_2

CW_Message_3

CW_Message_4

CW_Message_5

CW_Message_6

CW_Message_7

CW_Message_8

CW_Message_Bin_0

CW_Message_Bin_1

CW_Message_Bin_2

CW_Message_Bin_Trig

DC_Power_Save_On

DC_Power_Save_Off

DC_Power_Save_Toggle

Encryption_On

Encryption_Off

Encryption_Toggle

Encryption_Code

Local_PTT_On

Local_PTT_Off

Local_PTT_Toggle

_

Enc_On

_

Enc_Off

_

Enc_Toggle

_

Dec_On

_

Dec_Off

_

Dec_Toggle

Function

Recall the Memory Channel (Binary LSB)
Recall the Memory Channel (Binary)
Recall the Memory Channel (Binary)
Recall the Memory Channel (Binary)
Recall the Memory Channel (Binary MSB)
Step to the next-lower Operating Channel
Step to the next-higher Operating Channel
Turn the Compander Circuit "On"
Turn the Compander Circuit "Off"
Turn the Compander Circuit "On" or "Off" (Toggle)
Turn the CTCSS/DCS Encoder "On"
Turn the CTCSS/DCS Encoder "Off"
Turn the CTCSS/DCS Encoder "On" or "Off" (Toggle)
Turn the CTCSS/DCS Decoder "On"
Turn the CTCSS/DCS Decoder "Off"
Turn the CTCSS/DCS Decoder "On" or "Off" (Toggle)
Turn the 2-Tone Decoder "On"
Turn the 2-Tone Decoder "Off"
Turn the 2-Tone Decoder "On" or "Off" (Toggle)
Turn the CW IDer "On"
Turn the CW IDer "Off"
Turn the CW IDer "On" or "Off" (Toggle)
Transmit the CW ID
Send the CW Message 1
Send the CW Message 2
Send the CW Message 3
Send the CW Message 4
Send the CW Message 5
Send the CW Message 6
Send the CW Message 7
Send the CW Message 8
CW Message Recall (Binary LSB)
CW Message Recall (Binary)
CW Message Recall (Binary MSB)
Send the CW Message which is recalled from I/O port
Turn the DC Power Save Feature "On"
Turn the DC Power Save Feature "Off"
Turn the DC Power Save Featuer "On" or "Off" (Toggle)
Turn the Encryption Circuit "On"
Turn the Encryption Circuit "Off"
Turn the Encryption Circuit "On" or "Off" (Toggle)
Select the Encryption Code
Enable the Local PTT Switch
Disable the Local PTT Switch
Enable/Disable the Local PTT Switch (Toggle)

Item

Monitor_On
Monitor_Off
Monitor_Toggle
Monitor_M

Multi_Tone_Main
Multi_Tone_Sub
Multi_Tone_Toggle

Panel_Indicator_On
Panel_Indicator_Off
Panel_Indicator_Toggle
Repeat_On
Repeat_Off
Repeat_Toggle

Reset
Scan_On
Scan_Off
Scan_Toggle
Squelch_On
Squelch_Off
Squelch_Toggle
Test_Tone_On
Test_Tone_Off
Test_Tone_Toggle
Test_Tone_M

TOT_On
TOT_Off
TOT_Toggle
Transmit_On
Transmit_Off
Transmit_Toggle
TX_Power_Mid_On
TX_Power_Mid_Off
TX_Power_Mid_Toggle

TX_Power_Low_On
TX_Power_Low_Off
TX_Power_Low_Toggle

Function

Turn the Monitor Function "On"
Turn the Monitor Function "Off"
Turn the Monitor Function "On" or "Off" (Toggle)
Turn the Monitor Function "On" when the I/O port is
"High"
Select the Tone Table to "Main"
Select the Tone Table to "Sub"
Switch the Tone Table between "Main" and "Sub"
(Toggle)
Turn the Front Panel's Illumination "On"
Turn the Front Panel's Illumination Off
Turn the Front Panel's Illumination "On" or "Off" (Toggle)
Set theOperating Mode to "Repeat" mode
Set theOperating Mode to "Base" mode
Toggle theOperating Mode between the "Repeat"
mode and "Base" mode
Reset the Repeater
Start Scanning
Stop Scanning
Toggle the Scanner between "Start" and "Stop"
Turn the Squelch Circuit "On (Close)"
Turn the Squelch Circuit "Off (Close)"
Turn the Squelch Circuit "On" or "Off" (Toggle)
Generate the Test Tone Signal
Stop the generation of the Test Tone
Toggle the Test Tone genetation "On" and "Off"
Generate the Test Tone Signal when the I/O port is
"High"
Turn the Time-Out Timer featuer "On"
Turn the Time-Out Timer featuer "Off"
Turn the Time-Out Timer featuer "On" or "Off"
Enable the transmission of the Repeater
Disable the transmission of the Repeater
Enable/Disable the transmission of the Repeater
Set the transmitter power to the "Mid" level
Return the transmitter power to "Original" power level
Toggle the transmitter power between the "Mid" level
and "Original" power level
Set the transmitter power to the "Low" level
Return the transmitter power to "Original" power level
Toggle the transmitter power between the "Low" level
and "Original" power level

Item

Remote_Enb

Busy

CTCSS_Correspond

DCS_Correspond

CTCSS/DCS_Correspond

RX_Unlock

TX_Unlock

PLL_Unlock

PROGRAMMABLE I/O PORT OUTPUT ITEMS

Function

Output the signal when the Operating mode is set to
"Repeat" mode.
Output the signal when the squelch is opened.
Output the signal when the receiving CTCSS tone is
matched.
Output the signal when the receiving DCS code is
matched.
Output the signal when the receiving CTCSS tone or
DCS code is matched.
Output the signal when the RX PLL Circuit is Unlocked.
Output the signal when the TX PLL Circuit is Unlocked.
Output the signal when the TX or RX PLL Circuit is
Unlocked.

Item

Power_Supply_Backup

Power_Supply_Voltage
Transmit
Fan_Alarm
Fan_Status
High_Temperature

TX_PD_Det
Anser_Back

Function

Output the signal when the backup power source is
used.
Output the signal when the main power source is used.
Output the signal when the repeater is transmitting.
Output the signal when the Coolig Fan is disabled.
Output the signal when the Coolig Fan is activated.
Output the signal when the PA Unit is High Tempera­ture.
Output the signal when the TX power is abnormalily.
Output the signal when the repeater status is changed
from the Remote Control command.

B-3

DSUB 25-pin Accessory Connector

Note

B-4





Exploded View & Miscellaneous Parts









REF.












11

12

13

14

15

16

VXSTD P/N

U00508001
U30408007
U51416007
U20208002
U20406002
U20410002
U04408001
U24206001
U23308001
U04306002
U20305002
U24308001
U24310001
U52408002
U72004002
U20308002

VXSTD P/N

Q0000112

T9023499
RA0508500
RA0506900

PAN HEAD SCREW M5X8
FLAT HEAD SCREW M4X8B
HEXA SOCKET BOLT M4X16B
BINDING HEAD SCREW M2.6X8NI
BINDING HEAD SCREW M4X6NI
BINDING HEAD SCREW M4X10NI
SEMS SCREW HSM4X8
TAPTITE SCREW M2.6X6
TAPTITE SCREW M3X8
SEMS SCREW HSM3X6NI
BINDING HEAD SCREW M3X5NI
TAPTITE SCREW M3X8
TAPTITE SCREW M3X10
HEX HEAD BOLT M4X8NI
TOOTHED LOCK WASHER OW4NI
BINDING HEAD SCREW M3X8NI

ACCESSORIES

DESCRIPTION

DESCRIPTION

BLADE FUSE
DC CABLE
NAME PLATE
KNOB CAP

Non-designated parts are available only as
part of a designated assembly.

RA0510000
FRONT PANEL ASSY

RA0506900 (6 pcs)
KNOB CAP (ACCESSORIES)

N2090061
ROCKER SWITCH

RA02543A0
KNOB

QTY.

4
8
2
2

14

4
8
3

11

2
12
12

8

1

1

2

RA0507000
PLATE

RA0506800
RUBBER KNOB

M4090150
SPEAKER

C

CB2123001
CNTL UNIT

T9318204
WIRE ASSY

CB2327001
PANEL UNIT

RA0506000
PANEL

S5000241
HANDLE

T9207032
WIRE ASSY











T9207049
WIRE ASSY

RA0638100
SHIELD SHEET

R0134490
HOLDER

CB2122004
MAIN UNIT

RA050140A
CHASSIS

RA0532400
GASKET L=20

S0000074
RUBBER GROMMET



C



D







B



T9206754
WIRE ASSY

A

T9207034A
WIRE ASSY

RA03328A0
CASE

T9207037A
WIRE ASSY

T9318202
WIRE ASSY

T9207048
WIRE ASSY







E

F



H



G





T9207047
WIRE ASSY

R0145680 (3 pcs)
HOLDER

F

H

RA0505900
BRACKET

CB2566001
REG UNIT





E

D





I





T9207046
WIRE ASSY











11

11

11

J

A

12

12

11

11

11

13

13

12

13

12

12

12

13

12



12



11

13

12

O

P

16



12

12

K





N

M



RA0506500 (2 pcs)
MOTOR HOLDER



T9207053
WIRE ASSY

11

J

11

P

K

L

O

I

N



14

15



L

M









S5000241
HANDLE

S5000223 (3 pcs)
SPACER

RA0505500
PANEL

RA0505300
TOP CASE

Q6000114
TERMINAL B4 AG M3 (2 pcs)

RA0638000
SHIELD CASE

G1093917
IC

CB2878001
25 W PA UNIT

RA0637900
HEATSINK PLATE

P1090547
CONNECTOR

16

S5000236
WASHER



G










T9207055
WIRE ASSY

P1090654
CONNECTOR









RA0506600
COVER

RA0505400
BASE
RA0532800
LABELREAR

S5000242
FINGER GUARD

T9207039
WIRE ASSY

M2090037
FAN

Q6000170
TERMINAL STRIP

P1091181
CONNECTOR

P1091072
CONNECTOR

S5000182
SCREW

C-1

Exploded View & Miscellaneous Parts

Note

C-2

Block Diagam

MAIN Unit

D-1

Block Diagam

CNTL Unit, PANEL Unit, & 25W PA Unit

D-2

Connection Diagam

E-1

Connection Diagam

Note

E-2

Circuit Description

Receive Signal Path

Incoming RF from the RX antenna jack is delivered to the
MAIN Unit and passes through the protection diode
D1001 (1SS302) and D1002 (RN739F) and a varactor-
tuned band pass filter consisting of coils L1044 and L1048,
capacitors C1400, C1402, C1403, C1407, C1408, C1409 and
C1410, and varactor diodes D1033 and D1034 (both
HVU306).

Signals are then applied to the RF amplifier Q1063
(2SC3356). The amplified RF signal is applied through a
varactor-tuned band pass filter consisting of coils L1050
and L1051, capacitors C1427, C1429, C1430, C1431, C1433,
C1434, C1435 and C1436, and varactor diode D1035 and
D1036 (both HVU306) to the 1st mixer Q1018 (SPM5001)
along with the first local signal from the PLL circuit.

The first local signal is generated between 221.35 and

247.35 MHz by the Dual RX VCO, which consists of FET

Q1048 (Low Band; 2SK520) and Q1053 (High Band;
2SK520) and varactor diodes D1018, D1019, D1020, and

D1021 (Low Band; all 1SV229) and D1027, D1028, D1029,
and D1030 (High Band; all 1SV229), according to the pro­grammed receiving frequency; the local signal then pass­es through buffer amplifier Q1059 (2SC5226) and first
local amplifier Q1019 (2SC3357) to the first mixer Q1018
(SPM5001).

The 73.35 MHz first IF signal is applied to monolithic crys­tal filters XF1001/XF1002 (Wide; TM7050A MF73P) or
XF1501/XF1502 (Narrow; TM7050A MF73P) which strip
away unwanted mixer products, and the IF signal is ap­plied to the first IF amplifiers Q1022 (Wide; 2SC5226) or
Q1502 (Narrow; 2SC5226). The amplified first IF signal
is then delivered to the FM IF subsystem IC Q1028
(TA31136FN), which contains the second mixer, second
local oscillator, limiter amplifier, noise amplifier, and FM
detector.

A 2nd local oscillator signal, generated by the 72.895 MHz
crystal X1002, produces the 455 kHz second IF signal when
mixed with the first IF signal within Q1028 (TA31136FN).
The second IF signal passes through ceramic filter CF1001
(CFWM455G) or CF1002 (CFWM455F) which strips away
all but the desired signal, and then passes through the lim­iter amplifier within Q1028 (TA31136FN) to ceramic dis-
criminator CD1001 (CDB455C7), which removes any am­plitude variations in the 455 kHz IF signal before detec­tion of speech. The detected audio passes through the low
pass filter, consisting of R1199 and C1244, which rejects
the 455 kHz IF component.

The audio signal from the MAIN Unit is delivered to the
CNTL Unit and passes through the audio amplifier Q1020
(NJM2904V) to the active high pass filter section of Q3020
(FX805LG), which rejects the sub-audible frequency com­ponent. The filtered audio signal is delivered to electron­ic volume Q1056 (M51132FP), which adjusts the audio
sensitivity to compensate for audio level variations, then
passes through audio amplifier Q1020 (NJM2904V), au-
dio switch Q1040 (BU4066BCFV), attenuator consisting
of R1233, and limiter amplifier Q1050 (NJM2904V), to the
electronic volume control Q1056 (M51132FP), where the
maximum deviation is set. The audio signal subsequently
passes through the 3-section active low pass filter consist­ing of Q1017-1/-2/-3 (NJM2902V) and audio amplifier
Q1001 (NJM2902V) to providing the repeater transmit
audio.

A portion of the audio signal from the active high pass
filter section of Q3020 (FX805LG) is de-emphasized by
R3095 and C3080, providing a flat audio response. The
filtered audio then passes through the active band pass
filter Q3021 (NJM2902V) and audio mute gate Q3015
(DTC323TK) to audio power amplifier Q1057 (TDA2003),
providing up to 2 Watts of audio power to the 8-ohm loud­speaker.

Sub-Audible Signaling (DECODER)

A portion of the audio signal from the audio amplifier
Q1020 (NJM2904V) passes through the 3-section active
low pass filter Q1025 (NJM2902V) and the low pass fil-
tering section of Q3020 (FX805LG) to separate the CTC-
SS tones from the received audio signal. The CTCSS tones
are sent to the CTCSS decoder section of Q3020
(FX805LG). When a CTCSS tone is received, the CTCSS
information is delivered to pin 77 of Main CPU Q3014
(HD64F2238BFA13) from pin 4 and 8 of Q3020
(FX805LG) which compares the CTCSS tone with the pro­grammed tone.

Another portion of the audio signal amplified by Q1020
(NJM2904V) passes through the 3-section active low pass
filter Q3044 (NJM2902V) to separate the DCS codes from
the received audio signal. The low pass filtered signal
passes through the phase detector Q3044 (NJM2902V) to
pin 39 of Main CPU Q3014 (HD64F2238BFA13). When a
DCS code is received, the Main CPU Q3014
(HD64F2238BFA13) compares the DCS code with the
programmed code.

If the received CTCSS tone or DCS code matches the pro­grammed tone or code, pin 4 of the Main CPU Q3014
(HD64F2238BFA13) goes low, turning off the squelch
switch Q3015 (DTC323TK) and passing the received au­dio signal to the audio power amplifier Q1057 (TDA2003).

F-1

Circuit Description

Squelch Control

The squelch circuit consists of noise amplifier Q1033
(DTA144EE) and noise detector D1015 (MA143) on the
MAIN Unit, and control circuitry within Main CPU Q3014
(HD64F2238BFA13) on the CNTL Unit.

When no carrier is received, noise at the output of the
audio detector stage of Q1028 (TA31136FN) is amplified
by Q1033 (DTA144EE), and then rectified by D1015
(MA143) to provide a DC control voltage for the squelch
switch. The resulting DC voltage is delivered to pin 23 of
J1005.

The DC voltage from the MAIN Unit is delivered to the
A-D analog input port (pin 51) of the Main CPU Q3014
(HD64F2238BFA13) on the CNTL Unit, which compares
the squelch threshold level to that which is memorized in
EEPROM Q3006 (BR24L32F) or set by the front panel SQL
control.

RX PLL and VCO Circuits

The receiver’s PLL circuitry consists of PLL subsystem IC
Q1052 (MB15A02PFV1) on the MAIN Unit, which con-
tains a reference oscillator/divider, serial-to-parallel data
latch, programmable divider, phase comparator and a
swallow counter. Stability is obtained by a regulated 5 V
DC supply via Q1062 (L78M05T) and temperature com-
pensated 14.4 MHz crystal oscillator X1003.

The RX VCO made up two VCO circuit, one is Low-Band
RX VCO, consisting of FET Q1048 (2SK520) and varactor
diodes D1018, D1019, D1020, and D1021 (all 1SV229),
and another one is High-Band RX VCO, consisting of FET

Q1053 (2SK520) and varactor diodes D1027, D1028,
D1029 and D1030 (all 1SV229), oscillates between 221.35

MHz and 247.35 MHz according to the programmed re­ceiving frequency. The RX VCO output passes through
buffer amplifier Q1059 (2SC5226) and first local amplifi-
er Q1019 (2SC3357) to the first mixer Q1018 (SPM5001),
as described previously. A portion of the RX VCO output
is applied to the prescaler/swallow counter section of PLL
IC Q1052 (MB15A02PFV1). There the RX VCO signal is
divided by 64 or 65, according to a control signal from the
Main CPU Q3014 (HD64F2238BFA13) on the CNTL Unit,
before being applied to the programmable divider sec­tion of PLL IC Q1052 (MB15A02PFV1).

The data latch section of the PLL IC Q1052
(MB15A02PFV1) also receives serial dividing data from
the Main CPU Q3014 (HD64F2238BFA13), which causes
the pre-divided RX VCO signal to be further divided by
75,330 – 81,330 (or 60,264 – 65,064) in the programmable
divider section of PLL IC Q1052 (MB15A02PFV1), de-
pending upon the desired receive frequency, so as to pro­duce a 5 kHz (or 6.25 kHz) derivative of the current RX
VCO frequency. Meanwhile, the reference divider section
of the PLL IC Q1052 (MB15A02PFV1) divides the 14.4
MHz crystal reference from the reference oscillator X1003
and Q1045 (2SC4116GR) by 2880 (or 2304) to produce
the 5 kHz (or 6.25 kHz) loop reference.

The 5 kHz or 6.25 kHz signal from the programmable di­vider (derived from the RX VCO) and that derived from
the crystal are applied to the phase detector section of the
PLL IC Q1052 (MB15A02PFV1), which produces a pulsed
output with pulse duration depending on the phase dif­ference between the input signals. This pulse train is then
converted to DC, low pass filtered, then fed back to the
RX VCO varactor diodes D1018, D1019, D1020, D1021,
D1027, D1028, D1029, and D1030 (all 1SV229).

Changes in the DC voltage applied to the varactor diodes

D1018, D1019, D1020, D1021, D1027, D1028, D1029, and
D1030 (all 1SV229) affect the reactance in the tank circuit

RX VCO Q1048 and Q1053(both 2SK520), changing the
oscillating frequency according to the phase difference be­tween the signals derived from the RX VCO and the crys­tal reference oscillator. The RX VCO is thus phase-locked
to the reference frequency standard.

Transmit Signal Path

The speech audio from the CNTL Unit is applied to the
varactor diode D1010 (1SV214), which frequency modu-
lates the TX VCO from the unmodulated carrier at the
transmit frequency. The modulated transmit signal is buff­ered by Q1026 (2SC5226), then passes through the RF
amplifier Q1030 (2SC3357) and RF diode switch D1016
(RN739F) to the 25W PA Unit.

The transmit signal is applied to the RF amplifier Q7003
(2SC3357), then finally amplified by power amplifier
module Q7007 (S-AV33) up to 25 Watts. Harmonic and
spurious radiation in the final output is suppressed by a
low pass filter consisting of coils L7005, L7006, L7007 and
L7008, plus capacitors C7055, C7057, C7058, C7059, C7061,
C7062 and C7070 on the 25 W PA Unit, before delivery to
the TX antenna jack.

F-2

Circuit Description

TX PLL and VCO Circuits

The transmitter’s PLL circuitry consists of PLL subsystem
IC Q1008 (MB15A02PFV1) on the MAIN Unit, which con­tains a reference oscillator/divider, serial-to-parallel data
latch, programmable divider, phase comparator and a
swallow counter. Stability is obtained by a regulated 5 V
DC supply via Q1062 (L78M05T) and temperature com-
pensated 14.4 MHz crystal oscillator X1001.

The TX VCO consisting of transistor Q1021 (2SC5107)
and varactor diodes D1008 and D1009 (both HVU306)
oscillates between 148 MHz and 174 MHz according to
the programmed transmit frequency. The theory of oper­ation of the remainder of the PLL circuitry is similar to
that of the RX PLL circuit; however, dividing data from
the Main Q3014 (HD64F2238BFA13) on the CNTL Unit
is such that the VCO frequency is the actual transmit fre­quency.

APC (Automatic Power Control)

RF power output from the final amplifier module Q7007
(S-AV33) is sampled by C7041 and C7044, then rectified
by D7006 and D7007 (both HSM88AS). The resulting DC
voltage from the Main CPU Q3014 (HD64F2238BFA13)
on the CNTL Unit, to produce a control voltage for the
Automatic Power Controller Q7018 (LM2904PW), which
regulates control voltage of Q7007 (S-AV33).

CNTL (Control) Unit

The CNTL Unit consists of 8-bit CPU Q3014
(HD64F2238BFA13), EEPROM Q3006 (BR24L32F), RX
and TX speech audio circuits, and various analog switch­es for the CPU and repeater interconnections.

Microprocessor operational code is stored in Q3006
(BR24L32F), while channel data and repeater configura­tion information is programmed from an external PC con­nected to the front panel’s MIC jack via a VPL-1 program­ming cable.

The output from the Main CPU Q3014
(HD64F2238BFA13) contains serial control data used for
REPEATER/BASE mode control, as well as TX and RX PLL
data. Crystal X3002 oscillates at 12.288 MHz, and provides
stable clock timing for the Main CPU Q3014
(HD64F2238BFA13). When the repeater is powered on,
the voltage at pin 62 of Q3014 (HD64F2238BFA13) be-
comes stable, and the output of voltage detector IC Q3012
(BD4845FVE), which is tied to pin 59 (RST) of Q3014
(HD64F2238BFA13) becomes high, resetting the Main
CPU.

Base Operation (TX, Mic-Input Audio)

Microphone input is delivered past the MIC MUTE switch
Q4002 (DTC323TK), then passes through the audio am-
plifier and active high pass filter at Q4001 (NJM2902V)
when the signal is processed in the same manner as previ­ously described.

F-3

Circuit Description

Note

F-4

Alignment

Introduction

The VXR-9000EV has been aligned at the factory for the
specified performance across the entire frequency range
specified. Realignment should therefore not be necessary
except in the event of a component failure. All compo­nent replacement and service should be performed only
by an authorized Vertex Standard representative, or the
warranty policy may be voided.

The following procedures cover the sometimes critical and
tedious adjustments that are not normally required once
the transceiver has left the factory. However, if damage
occurs and some parts are replaced, realignment may be
required. If a sudden problem occurs during normal op­eration, it is likely due to component failure; realignment
should not be done until after the faulty component has
been replaced.

We recommend that servicing be performed only by au­thorized Vertex Standard service technicians who are ex­perienced with the circuitry and fully equipped for repair
and alignment. Therefore, if a fault is suspected, contact
the dealer from whom the transceiver was purchased for
instructions regarding repair. Authorized Vertex Standard
service technicians realign all circuits and make complete
performance checks to ensure compliance with factory
specifications after replacing any faulty components.
Those who do undertake any of the following alignments
are cautioned to proceed at their own risk. Problems
caused by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Vertex Standard
must reserve the right to change circuits and alignment
procedures in the interest of improved performance, with­out notifying owners. Under no circumstances should any
alignment be attempted unless the normal function and
operation of the transceiver are clearly understood, the
cause of the malfunction has been clearly pinpointed and
any faulty components replaced, and the need for realign­ment determined to be absolutely necessary. The follow­ing test equipment (and thorough familiarity with its cor­rect use) is necessary for complete realignment. Correc­tion of problems caused by misalignment resulting from
use of improper test equipment is not covered under the
warranty policy. While most steps do not require all of
the equipment listed, the interactions of some adjustments
may require that more complex adjustments be performed
afterwards. Do not attempt to perform only a single step
unless it is clearly isolated electrically from all other steps.
Have all test equipment ready before beginning, and fol­low all of the steps in a section in the order presented.

Required Test Equipment

 RF Signal Generator with calibrated output level at 500

MHz

 AF Signal Generator
 Frequency Counter: ±0.2 ppm accuracy at 500 MHz
 In-line Wattmeter with 5% accuracy at 500 MHz
 50-ohm, 50-W RF Dummy Load
 Regulated DC Power Supply (standard 13.6V DC, 15A)
 AC Voltmeter
 DC Voltmeter
 VHF Sampling Coupler
 Microsoft® Windows® 98 or later operating system
 Vertex Standard VPL-1 Connection Cable and CE60

Alignment program

Alignment Preparation & Precautions

A 50-ohm RF Dummy load and in-line wattmeter must be
connected to the main antenna jack in all procedures that
call for transmission, except where specified otherwise.
Correct alignment is not possible with an antenna.

After completing one step, read the following step to de­termine whether the same test equipment will be required.
If not, remove the test equipment (except dummy load
and wattmeter, if connected) before proceeding.

Correct alignment requires that the ambient temperature
be the same as that of the transceiver and test equipment,
and that this temperature be held constant between 20 °C
and 30 °C. When the transceiver is brought into the shop
from hot or cold air, it should be allowed time to come to
room temperature before alignment.

Whenever possible, alignments should be made with os­cillator shields and circuit boards firmly affixed in place.
Also, the test equipment must be thoroughly warmed up
before beginning.

Note: Signal levels in dB referred to in this procedure are

based on 0 dBµ EMF = 1.0 µV.

G-1

Alignment

Test Setup

Setup the test equipment as shown below, apply 13.6V
DC power to the VXR-9000EV.

50-Ohm

Dummy Load

RF Sampling

Inline

Wattmeter

Deviation Meter

Frequency

Counter

Coupler

VPL-1
Connection Cable

COM Port

The VXR-9000EV must be programmed for use in the in­tended system before alignment is attempted. The RF pa­rameters are loaded from the file during the alignment
process.

In order to facilitate alignment over the complete switch­ing range of the equipment it is recommended that the
channel data in the transceiver is preset as the chart be­low.

CHANNELS

Band-LOW

Band-MID

Band-HIGH

FREQUENCY (SIMPLEX

TYPE A

134.000 MHz

147.000 MHz

160.000 MHz

RF

Signal Generator

TX ANT RX ANT

VXR-9000EV

VXR-9000

MIC

146.000 MHz

160.000 MHz

174.000 MHz

DC INPU T

Power Supply

13.6 VDC

)

TYPE C

The Alignment Tool Outline

Installation the tool

Install the CE60 (Clone Editor) to your PC.
The re-alignment for VXR-9000EV may use the “Align­ment“ menu of CE60.

Basic sequence

The data displayed in screen of this tool is temporary data,
and there is fear that the consistence of the displayed data
and the data in the transceiver is failure when you do not
keep the sequence which is specified below.

1. Enter the alignment mode

2. Data upload

3. Align data

4. Data download

When finish the alignment one parameter, the tool ask
you “Update this data?“ If you select “Yes,“ the tempo­rary data is updated. If you select “Yes,“ the tool down­loaded data to the transceiver.

Menu of the Tool (BASIC ALIGNMENT

In the Basic Alignment mode, the aligned data written in
the radio will be able to re-align its alignment data. In this
mode, there are many items to align with three point (low
edge, center and high edge) except “VCO,“ “RX Tune“
and “Mod Balance.“ The value of each parameter can be
changed to desired position by ““ / ““ arrow key for
up/down, direct number input and drag the mouse.

To enter the Basic Alignment Mode, select “Basic Align­ment“ in the main menu “Radio.“ It will start to “Upload“
the written personalized data from the radio and to
“Download“ alignment data to the radio. Then pressing
the button “OK“ will start the Basic Alignment Mode.

)

The alignment mode is accessed by “Alignment mode“
command from the computer whilst switching on. And
the alignment tool operates it automatically.

During the alignment mode, normal operation is suspend­ed. Use the alignment tool program running on PC.

G-2

Note; when all items are aligned, it is strongly recommend­ed to align according to following order. The detail infor­mation is written in the help of CE60 (Clone Editor).

1. RX VCO Tune Voltage (RX VCO)

2. TX VCO Tune Voltage (TX VCO)

3. PLL Reference Frequency (Frequency)

4. RX Sensitivity (RX Tune)

5. Squelch (SQL)

6. TX Power

7. Modulation Balance <Wide>

8. Modulation Balance <Narrow>

9. Maximum Deviation <Wide>

10. Maximum Deviation <Narrow>

11. Sub-Audio (CTCSS/DCS) Deviation

MAIN Unit

Circuit Diagram

RX: 0.03 V
TX: 0.71 V

8.90 V

RX Band “L”: 2.77 V
RX Band “M”: 4.66 V
RX Band “H”: 6.99 V

W: 0.05 V

N: 6.85 V

8.90 V

8.90 V

W: 7.33 V
N: 0.14 V

W: 0.03 V
N: 8.89 V

RX Band “L”: 7.57 V
RX Band “M”: 7.65 V
RX Band “H”: 7.70 V

0.78 V

0 V

7.53 V

RX: 5.07 V
TX: 0.01 V

RX: 5.73 V
TX: 0.01 V

W: 2.15 V

N: 2.51 V

3.99 V

4.54 V

3.59 V

W: 0.04 V

N: 2.98 V

RX: 0.30 V
TX: 0.79 V

RX: 8.79 V
TX: 0.01 V

0.97 V

4.80 V

8.90 V

4.44 V

4.44 V

W: 2.65 V
N: 0.04 V

RX: 8.19 V
TX: 8.90 V

0.48 V

3.93 V

0.66 V

4.80 V

1.09 V

0.78 V

W: 2.17 V
N: 0.04 V

W: 2.51 V
N: 2.98 V

W: 2.63 V
N: 0.04 V

W: 3.70 V

N: 4.02 V

W: 0.04 V
N: 6.66 V

RX: 7.37 V
TX: 0.05 V

RX: 0.03 V
TX: 8.89 V

0.71 V

W: 5.78 V
N: 0.04 V

0.12 V

0.02 V

3.57 V

3.72 V

1.36 V

W: 7.30 V
N: 0.04 V

W: 0.05 V
N: 6.86 V

RX Band “L”: 1.59 V
RX Band “M”: 1.79 V
RX Band “H”: 5.46 V

RX Band “L”: 1.59 V

RX Band “M”: 1.79 V

RX Band “H”: 5.46 V

8.45 V

8.47 V

0.01 V

8.46 V

4.99 V

8.90 V

8.90 V

RX Band “L”: 0.13 V
RX Band “M”: 2.50 V
RX Band “H”: 2.50 V

RX Band “L”: 3.66 V
RX Band “M”: 0.04 V
RX Band “H”: 0.04 V

RX Band “L”: 2.49 V
RX Band “M”: 0.14 V
RX Band “H”: 0.13 V

4.83 V

RX Band “L”: 0.03 V
RX Band “M”: 3.48 V
RX Band “H”: 3.48 V

RX Band “L”: 2.43 V
RX Band “M”: 2.36 V
RX Band “H”: 2.21 V

RX Band “L”: 0.41 V
RX Band “M”: 0.55 V
RX Band “H”: 0.62 V

3.17 V

8.55 V

8.90 V

1.28 V

1.01 V

2.07 V

2.05 V

8.91 V

0.01 V

8.90 V

2.12 V

3.68 V

2.07 V

3.65 V

4.99 V

2.44 V

8.83 V

2.05 V

2.07 V

3.44 V

4.74 V

0 V

8.48 V

0.01 V

5.01 V

0 V

3.86 V

3.65 V

RX Band “L”: 2.04 V
RX Band “M”: 3.74 V
RX Band “H”: 6.17 V

RX Band “L”: 2.04 V
RX Band “M”: 3.74 V
RX Band “H”: 6.17 V

4.04 V

4.03 V

4.47 V

RX Band “L”: 1.79 V
RX Band “M”: 1.68 V
RX Band “H”: 1.60 V

3.96 V

4.04 V

4.04 V

4.04 V

3.96 V

RX Band “L”: 2.16 V
RX Band “M”: 2.19 V
RX Band “H”: 2.22 V

4.04 V

2.04 V

8.90 V

3.93 V

2.03 V

4.04 V

7.98 V

4.04 V

2.05 V

8.74 V

8.59 V

2.09 V

1.93 V

2.05 V

8.90 V

2.02 V

0.20 V

2.02 V

TX “HI” Power: 5.01 V
TX “LOW” Power: 0 V

RX: 8.81 V
TX: 8.17 V

RX: 0.02 V
TX: 0.10 V

4.15 V

4.99 V

1.90 V

5.01 V

0.03 V

TX: 8.80 V

3.26 V

TX “HI” Power: 0 V
TX “LOW” Power: 4.96 V

3.26 V

0.02 V

4.59 V

2.90 V

8.90 V

0 V

5.00 V

0.22 V

1.88 V

5.01 V

1.90 V

0 V

4.72 V

4.99 V

1.90 V

5.01 V

5.02 V

4.69 V

5.01 V

5.01 V

2.05 V

8.90 V

5.01 V

2.06 V

2.11 V

3.97 V

1.21 V

8.91 V

3.65 V

3.65 V

3.65 V

3.65 V

4.99 V

2.04 V

2.04 V

1.88 V

2.04 V

1.91 V

1.47 V

0.85 V

13.60 V

6.37 V

H-1

MAIN Unit

Note

H-2

MAIN Unit

Parts Layout (Side A)

BA DC FE G

M51132FP

(Q1006, 1056)

MB15A02PFV1

(Q1008, 1052)

TA31136FN

(Q1028)

NJM2904V

(Q1004, 1020, 1050)

2SK520 (K41)

(Q1048, 1053)

NJM2902V

(Q1001, 1017, 1025)

TDA2003

(Q1057)

2SA1586Y (SY)

(Q1051)

1

2

3

2SC3356 (R24)

(Q1063)

2SC3357 (RK)

(Q1030)

2SC4116GR (LG)

(Q1007, 1033, 1045,

1046, 1061)

2SC5107 (MF0)

(Q1021)

2SC5226 (R22)

(Q1022, 1026, 1059)

SPM5001

(Q1018)

UN5215 (8E)

(Q1047)

XN1213 (9L)

(Q1024, 1503)

MA143 (MC)

(D1014, 1015, 1023,

1024, 1025, 1026)

RN739F (5F)

(1016, 1017)

4

5

H-3