FCC ID: K6620224X20
IC IF: 511B-20224X20
Alignment
Vertex Standard Co., Ltd.
1
VX-127/VX-177 Alignment
Introduction and Precautions
The VX-127/VX-177 has been carefully aligned at the factory for the specified performance
across the 430 MHz amateur band. 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 Yaesu 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 Yaesu 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 Yaesu 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, Yaesu 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.
