Yaesu FT-712RH, Technical Supplement

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This manual is intended to serve as a supplement to the FT-712RH Operating Manual. De-
tailed information regarding functions, specifications, options and operation has been provided
in the Operating Manual, and is not reprinted herein. Therefore, this supplement is not
intended to serve as an independent reference, but to be used in conjunction with the infor-
mation provided in the Operating Manual.
Because of the compactness and complexity of the double-sided glass-epoxy circuit boards
used in the FT-712RH, four layout diagrams are provided for each board. Each side of the
board is identified by the type of the majority of components installed on that side. In
most cases one side has only chip components, and the other has either a mixture of both
chip and lead components (trimmers, coils, electrolytic capacitors, packaged ICs, etc.), or
lead components only. The two "obverse" views depict the board a? it is seen when viewed
directly with the eye, while the two "reverse" views depict the unseen side of the board as
it would appear if one were to peer through the board from the other side without seeing
the components and tracks on the near side.
While we believe the technical information in this manual is correct, Yaesu 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.
Yaesu Musen reserves the right to make changes in the circuitry of this transceiver, in the
interest of technological improvement, without notification of the owners.