Vertex Standard VX-2R ユーザーズマニュアル

©

2003 VERTEX STANDARD CO., LTD.       EH015M90A

Technical Supplement

Specifications .................................................................................................................................................................. 2
Exploded View & Miscellaneous Parts

Connection Diagram ...................................................................................................................................................... 5
Block Diagram ................................................................................................................................................................ 6
Circuit Description......................................................................................................................................................... 7
Alignment ...................................................................................................................................................................... 11
Board Units (Schematics, Layouts & Parts)

MAIN Unit................................................................................................................................................................ 17
FILTER Unit.............................................................................................................................................................. 33
SW Unit ..................................................................................................................................................................... 37
VCO Unit .................................................................................................................................................................. 39

This manual provides the technical information necessary for servicing the VX-2R

VHF/UHF Ultra-Compact Dual-Band Transceiver with Wide Band Coverage.
Servicing this equipment requires expertise in handing surface-mount chip com-

ponents. 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 trans-

ceiver. Each side of the board is referred to by the type of the majority of compo-

nents 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
VX-2R

 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 STAN-

DARD 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 incon-

sistencies in the technical information would be appreciated.

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