Vertex Standard EVX-S24 Service Manual
UHF Digital/Analog Transceiver
EVX-S24
Vertex Standard LMR, Inc.
©2016 Vertex Standard LMR, Inc.
EC146U90B
Service Manual
Introduction
This manual provides the technical information necessary for servicing the
tal/Analog Transceiver.
Servicing this equipment requires expertise in handing surface-mount chip components. Attempts by non-qualifi ed 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.
EVX-S24
UHF Digi-
As described in the pages to follow, the advanced microprocessor design of the
ceiver allows a complete alignment of this transceiver to be performed without opening the case
of the radio; all adjustments can be performed from the front panel, using the “Alignment Mode”
menu.
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.
EVX-S24
Trans-
Important Note
This transceiver is assembled using Pb (lead) free solder, based on the RoHS specifi cation.
Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this apparatus.
The solder stated above utilizes the alloy composition required for compliance with the lead-free specifi cation, and
any solder with the above alloy composition may be used.
Contents
Specifi cations.................................................................................................................................................................2
Exploded View & Miscellaneous Parts ....................................................................................................................... 4
Parts List .......................................................................................................................................................................5
Block Diagram ..............................................................................................................................................................6
Circuit Description .......................................................................................................................................................8
Alignment ......................................................................................................................................................................9
Main Unit (FR028210D) Circuit Diagram .............................................................................................................. 18
Display Unit (FR028310A) Circuit Diagram ..........................................................................................................20
EVX-S24 UHF Digital/Analog Transceiver Service Manual 1
Specifi cations: USA (NA) & Except Europe (CE
General
Frequency range: 403-480 MHz
Channel / Group: 256 Channels / 16 Groups
Emission Type: 7K60F1E / 7K60FXE (Digital: 12.5 kHz Voice)
7K60F1D / 7K60FXD (Digital: 12.5 kHz Data)
7K60F1W (Digital: Combination of 12.5 kHz Voice & Data)
16K0F3E / 11K0F3E (Analog)
Power Supply Voltage: 3.7 V DC (Nominal)
Current Consumption: 1.2 A (Digital, 3 W TX)
1.9 A (Analog, 2 W TX)
Channel Separation: 12.5 kHz (Digital)
12.5 / 20 / 25 kHz (Analog) (USA Model: 12.5 kHz)
IP Rating: IP67
Operating Temperature Range: –22 °F to +140 °F (–30 °C to +60 °C)
Charging Temperature Range: +41 °F to +104 °F (+5 °C to +40 °C)
Frequency Stability: ±1.5 ppm
Antanna Impedance: 50 Ohm (unbalanced)
Dimension (W x H x D): 2.1 x 3.6 x 1.2 inches (55 x 91 x 31.5 mm)
Weight (Approx.): 7.6 oz (215g) (with Battery, Antenna, Belt Clip)
)
Receiver
Circuit Type: Direct Conversion
Sensitivity: 0.28 μV (Digital, 1 % BER)
0.25 μV (Analog, 12 dB SINAD)
Adjacent Channel Selectivity: 70 dB (25 kHz)
60 dB (12.5 kHz)
Hum and Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Intermodulation: 70 dB
Spurious Image Rejection: 70 dB
Conducted Spurious: –57 dBm
Audio output: 500 mW @4 Ohm, <10 % THD
Transmitter
Output Power: 3 / 1 / 0.5 W (Digital)
2 / 1 / 0.5 W (Analog)
Modulation: Sigma Delta Modulation
Maximum Frequency Deviation: ±5.0 kHz (25 kHz Step, Analog)
±2.5 kHz (12.5 kHz Step, Analog)
Conducted Spurious Emissions: –36 dBm @
FM Hum & Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Audio Distortion: <5% @1 kHz
(Measured by TIA/EIA-603
(Measured by TIA/EIA-603
)
)
<
1 GHz, –30 dBm @> 1 GHz
=
Specifi cations subject to change without notice or obligation.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 2
Specifi cations: Europe (CE
General
Frequency range: 403-480 MHz
Channel / Group: 256 Channels / 16 Groups
Emission Type: 7K60F1E / 7K60FXE (Digital: 12.5 kHz Voice)
7K60F1D / 7K60FXD (Digital: 12.5 kHz Data)
7K60F1W (Digital: Combination of 12.5 kHz Voice & Data)
16K0F3E / 11K0F3E (Analog)
Power Supply Voltage: 3.7 V DC (Nominal)
Current Consumption: 1.2 A (Digital, 3 W TX)
1.9 A (Analog, 2 W TX)
Channel Separation: 12.5 kHz (Digital)
12.5 / 20 / 25 kHz (Analog)
IP Rating: IP67
Operating Temperature Range: –30 °C to +60 °C
Charging Temperature Range: +5 °C to +40 °C
Frequency Stability: ±1.5 ppm
Antanna Impedance: 50 Ohm (unbalanced)
Dimension (W x H x D): 55 x 91 x 31.5 mm
Weight (Approx.): 215g (with Battery, Antenna, Belt Clip)
)
Receiver
Circuit Type: Direct Conversion
Sensitivity: 0.28 μV (Digital, 1 % BER)
0.4 μV (Analog, 20 dB SINAD)
Adjacent Channel Selectivity: 70 dB (25 kHz)
60 dB (12.5 kHz)
Hum and Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Intermodulation: 65 dB
Spurious Image Rejection: 70 dB
Conducted Spurious: –57 dBm
Audio output: 500 mW @4 Ohm, <10 % THD
Transmitter
Output Power: 3 / 1 / 0.5 W (Digital)
2 / 1 / 0.5 W (Analog)
Modulation: Sigma Delta Modulation
Maximum Frequency Deviation: ±5.0 kHz (25 kHz Step, Analog)
±2.5 kHz (12.5 kHz Step, Analog)
Conducted Spurious Emissions: –36 dBm @
FM Hum & Noise: 45 dB (25 kHz)
40 dB (12.5 kHz)
Audio Distortion: <5% @1 kHz
(Measured by EN 300 086
(Measured by EN 300 086
)
)
<
1 GHz, –30 dBm @> 1 GHz
=
Specifi cations subject to change without notice or obligation.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 3
Exploded View & Miscellaneous Parts
FRONT CASE ASSY (COMPORNENT
PANEL ASSY (FRONT
–SPEAKER
–SP NET
O RING (PANEL
KEYPAD
WINDOW (C146
DOUBLE FASE ADHESIVE (WDO
MIC MEMBRANE
PAD (WINDOW
)
PAD (DISP
)
PAD (MIC
SPONGE (PANEL
WIRE ASSY (WHT 25
WIRE ASSY (BRN 35
REAR CASE ASSY (COMPORNENT
HOUSING ASSY (REAR
–BEZEL (PTT
–PADDLE (PTT
–BUTTON (PTT
–BUTTON (EMG
)
LID (USB
LIGHT GUIDE (TX/RX
SHEET (MICROTEX C012
SHEET (VENT
O RING (SCREW) (2 pcs
Y-RECESS TAPTITE-B (2X22SUS B) (x 2 pcs
Y-RECESS TAPTITE-B (2X13NI) (x 2 pcs
Y-RECESS SCREW (M2X16.5NI) (x 2 pcs
CHASSIS ASSY (COMPORNENT
CHASSIS
CONNECTOR (SMAJ-VM2
O RING (4.8X1.9
THERMALCONDUCTIVE PAD (CHG
SHEET (6X6) (2 pcs
BATTERY COVER ASSY (COMPORNENT
)
LID (C146
O RING (BATT
LATCH (BATT
SLIDE KNOB (C146
PAD (BATT) (x2 pcs
PAN HEAD TAPTITE-B (1.7X4(3
MAIN UNIT ASSY (COMPORNENT
Printed Circuit Board with Components
GASKET (JACK
GASKET (VCO
SHIELD SHEET (16X10
ELEC. COND TAPE (2.5X2.5
RING NUT
PAN HEAD SCREW (M2X3NI #3
PAN HEAD TAPTITE-B (2X5 #2) (4 pcs
DISPLAY UNIT ASSY (COMPORNENT
Printed Circuit Board with Components
LCD
MICROPHONE ELEMENT
HOLDER (LCD
LIGHT GUIDE (LCD
DOUBLE FACE ADHESIVE (LCD
INTER CONNECTOR
REFLECTOR SHEET
GASKET
GROUND PLATE (133
SPACER (MIC
(
)
TAP (LCD
PAN HEAD TAPTITE-B (1.7X4(3
PAN HEAD TAPTITE-B (2X5 #2) (3 pcs
LI-ION BATTERY PACK
FNB-V146LI (3.7V, 2300 mAh) AAM10X001
AC A
PA-57B (for USA) AAL92X002
PA-57C (for EU) AAL92X003
PA-57U (for UK) AAL92X004
PA-57F (for Argentina) AAL92X005
PA-57G (for China) AAL92X006
PA-57H (for Australia) AAL92X007
PA-57K (for Brazil) AAL92X008
Antenna VXSTD P/N
ATU-6A (400-430 MHz) AAE23X001
ATU-6B (420-450 MHz) AAE23X006
ATU-6C (440-470 MHz) AAE23X002
ATU-6D (450-485 MHz) AAE23X003
ATU-20AS (400-430 MHz) AAM23X001
ATU-20DS (440-470 MHz) AAM23X002
ATU-20FS (450-480 MHz) AAM23X003
REF.
DAPTOR
VXSTD P/N
U07230302
U9900307
U9900309
U9900311
U9900313
)
)
)
)
) (
) (
x 2 pcs
)
)
)
)
)
)
)
)
)
)
)
)
)
)
YEL Model only
(
B
ATTERY CHARGER
)
)
)
)
)
)
)
)
)
)
)
)
VXSTD P/N
)
VXSTD P/N
PAN HEAD SCREW M2X3NI #3
PAN HEAD TAPTITE-B 2X5 #2
Y-RECESS TAPTITE-B 2X22SUS B
Y-RECESS TAPTITE-B 2X13NI
Y-RECESS SCREW M2X16.5NI
)
)
YEL Model only
)
)
)
)
)
#3
)
)
)
)
)
)
#3)
)
(4 pcs
)
DESCRIPTION
)
)
)
)
)
RUBBER CAP (JACK
)
O RING (PANEL
WIRE ASSY
FR027890B
GROUND PLATE (133
RING NUT
RA157250A
RA1634500
KNOB (VOL
RA1634600
QTY.
1
7
2
2
2
SHIELD SHEET
O RING (4.8X1.9
LIGHT GUIDE (TX/RX
RA125090A
)
RA1639400 (x 2 pcs
)
RA1631000
RA1643200
)
RA1642300
GASKET (JACK
RA1632900
RA1037400
RA1632300
BUSH
)
O RING (SCREW
SHEET (VENT
Non-designated parts are available only as part of a designated assembly.
)
)
)
)
)
RA1639600
)
)
)
)
DISPLAY UNIT ASSY (BLK
CB7125000
DISPLAY UNIT ASSY (YEL
CB7129000
FRONT CASE ASSY (BLK
17000
CB71
CASE ASSY (YEL
FRONT
CB7118000
MAIN UNIT ASSY
CB7124000
SHEET (6X6
RA037690B (x 2 pcs
THERMAL CONDUCTIVE PAD (CHG
RA1640600
)
)
CHASSIS ASSY
CB7121000
)
LID (USB
RA1634200
REAR CASE ASSY (BLK
CB7119000
REAR CASE ASSY (YEL
CB7120000
)
)
)
)
SHEET (MICROTEX C012
RA0337300
)
O RING (BATT
RA1633400
BATTERY COVER ASSY (BLK
CB7122000
BATTERY COVER ASSY (YEL
CB7123000
)
)
)
EVX-S24 UHF Digital/Analog Transceiver Service Manual 4
Parts List
REF. DESCRIPTION VALUE MFR’s DESIG VXSTD P/N
FRONT CASE ASSY
FRONT CASE ASSY
O RING
REAR CASE ASSY (BLK) CB7119000
REAR CASE ASSY (YEL) CB7120000
LIGHT GUIDE
SHEET
SHEET
O RING
Y-RECESS TAPTITE-B
Y-RECESS TAPTITE-B
Y-RECESS SCREW
BATTERY COVER ASSY
BATTERY COVER ASSY
O RING
CHASSIS ASSY CB7121000
SHEET
O RING
SHIELD SHEET RA1643200
TERMINAL CONDUCTIVE PAD
(
BLK) CB7117000
(
YEL) CB7118000
(
x2 pcs) 2X22SUS B U9900309
(
x2 pcs) 2X13NI U9900311
(
x2 pcs) M2X16.5NI U9900313
(
BLK) CB7122000
(
YEL) CB7123000
(
x2 pcs)
(
PANEL) RA1631000
(
TX/RX) RA1632300
(
MICROTEX C012) RA0337300
(
VENT) RA1639600
(
SCREW) RA1639400
(
BATTERY) RA1633400
(
CHG) RA1640600
(
6X6) RA037690B
(
4.9X1.9) RA1037400
MECHANICAL PARTS
KNOB
LID
RUBBER CAP
BUSH RA125090A
ELECTRICAL PARTS
WIRE ASSY FR027890B
MAIN UNIT ASSY CB7124000
F 1001 CHIP FUSE
F 1002 CHIP FUSE
F 1003 CHIP FUSE
J 1003 CONNECTOR ZX62D-B-5PA8(30) P1091565
J 1005 CONNECTOR 03-A70G0-36BKA P1091581
Q 1016 FET RD04LUS2-T212 G3070525
S 1001 TACT SWITCH EVQP42B3M N5090176
S 1002 TACT SWITCH EVQP42B3M N5090176
TH1001 THERMISTOR TH05 4B473FR G9090150
VR1001 POT. TP76N975N13.5FB503RY10034 J60800314
X 1001 TCXO 19.2MHz NT2520SB 19.2MHZ H9501523
GASKET
RING NUT RA157250A
PAN HEAD SCREW M2X3NI #3 U07230302
PAN HEAD TAPTITE-B (x4 pcs) 2X5 #2 U9900307
DISPLAY UNIT ASSY
DISPLAY UNIT ASSY
DS2001 LCD GTA4716SY01 G6090231
MC2001
S 2001 TACT SWITCH SKRMABE010 N5090172
S 2002 TACT SWITCH SKRMABE010 N5090172
S 2003 TACT SWITCH SKRMABE010 N5090172
GROUBD PLATE
PAN HEAD TAPTITE-B
MICROPHONE ELEMENT
3.15A, 36V FHC16 322ADTP Q0000118
2A, 36V FCC16 202ADTP Q0000147
2A, 36V FCC16 202ADTP Q0000147
(
BLK) CB7125000
(
YEL) CB7129000
PFO-T6022P-1.5 M3290060
(
x3 pcs) 2X5 #2 U9900307
(
VOL) RA1634600
(
USB) RA1643200
(
JACK) RA1634500
(
JACK) RA1632900
(
133) RA1642300
When replace a chip fuse,
use the part of the same type and value.
EVX-S24 UHF Digital/Analog Transceiver Service Manual 5
Block Diagram
EVX-S24 UHF Digital/Analog Transceiver Service Manual 6
Block Diagram
EVX-S24 UHF Digital/Analog Transceiver Service Manual 7
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