Yaesu FT-897D Technical Supplement

1
Introduction
This manual provides technical information necessary for servicing the FT-897/D HF/VHF/UHF ALL MODE Trans-
ceiver.
Servicing this equipment requires expertise in handling surface-mount chip components. 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 circuit board in the Transceiver. Each side of is referred to
by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only
chip components, and the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic
capacitors, ICs, etc.), or leaded components only.
While we believe the technical information in this manual to be correct, VERTEX STANDARD 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.
©2010 VERTEX STANDARD CO., LTD. EH012M90D
Technical Supplement
FT-897/-897D
HF/VHF/UHF
ALL MODE Transceiver
Specifications ................................................... 2
Exploded View & Miscellaneous Parts ....... 4
Block Diagram.................................................. 5
Circuit Description ......................................... 7
Alignment ....................................................... 10
Contents
Board Unit ( Schematics, Layouts & Parts )
MAIN Unit ............................................................... 23
PLL Unit ....................................................................69
PA Unit ......................................................................89
PANEL Unit ........................................................... 117
MIC Unit ................................................................. 137
VR Unit ................................................................... 140
BATT-CONN Unit ................................................. 141
REF Unit .................................................................. 142
TCXO-9 Unit .......................................................... 143
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong
VERTEX STANDARD
(
AUSTRALIA
)
PTY., LTD.
Normanby Business Park, Unit 14/45 Normanby Road
Notting Hill 3168, Victoria, Australia

Yaesu FT-897D Specifications

General

Product type	Portable CB radio
Product color	Black
Housing material	-
Input voltage	13.8 V
Output power	100 W
AM band range	6 - 20 kHz
FM band range	15 - 30 MHz
Frequency range	0.1 - 470 MHz
Channels quantity	200 channels
Compatible products	FC-40 Antenna FC-30 Automatic Antenna Tuner Collins CW Filter 500 Hz, 7-pole Collins SSB Filter 2.3 kHz, 10-pole MD-100A8X\\tDesktop Microphone CD-24\\tCharge Adapter
Microphone included	Yes
Display type	LCD

Weight and Dimensions

Depth	262 mm
Width	200 mm
Height	80 mm