Vertex Standard VX-4107 Alignment Manual

Introduction
The VX-4100/4200 series are carefully aligned at the factory for the specified
performance across the frequency range specified for each version. Realignment should
therefore not be necessary except in the event of a component failure, or altering version type.
All component replacement and service should be performed only by an authorized Vertex
Standard representative, or the warranty policy may be void.
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 subsequently are placed, 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 reserves 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 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.
VX-4107/4207 Alignment
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FCC ID: K6610354640
IC ID: 511B-10354640
Alignment
Vertex Standard Co., Ltd.