FCC ID: K6620165X40
IC IF: 511B-20165X40
Alignment
Vertex Standard Co., Ltd.
1
Introduction and Precautions
The
FT-7800R
has been carefully aligned at the factory for the specified performance
across the 144 MHz and 430 MHz amateur bands. 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.
