Vertex Standard EVX-5300, Service Manual

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EVX-5300/-5400 UHF Service Manual 1
Introduction
This manual provides technical information necessary for servicing the
EVX-5300/-5400
UHF Digital/Analog Mobile Trans-
ceiver.
Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualiied 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 circuit board in the transceiver. Each side of is referred to by the
type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only chip com-
ponents, 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
EVX-5300/-5400
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 FIF-12 USB Programming Interface and CE142 Software.
While we believe the technical 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.
Important Note
This transceiver is assembled using Pb (lead) free solder, based on the RoHS speciication.
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 speciication, and any
solder with the above alloy composition may be used.
UHF Digital/Analog
Mobile Transceiver
EVX-5300/-5400
Service Manual
Vertex Standard LMR, Inc.
© 2014 Vertex Standard LMR, Inc.
EC114U90E
Contents
Speciications
USA/EXP Models ...................................... 2
EU Model ................................................... 3
DSUB 15-pin Accessory Connector ............. 4
Exploded View & Miscellaneous Parts ....... 5
Parts List ........................................................ 6
Block Diagram ............................................... 8
Circuit Description ..................................... 10
EVX-5300 EVX-5400
Alignment..................................................... 12
Circuit Diagram
MAIN Unit (FR026490A: TYPE “G6”) ...... 23
MAIN Unit (FR024860B: TYPE “G7”) ...... 25
MAIN-2 Unit (FR026490A: TYPE “G7”) ... 27
FRONT-A Unit (FR024850C: EVX-5300) .. 29
FRONT-B Unit (FR025010C: EVX-5400) .. 30