Yaesu FT-950, Technical Supplement

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Specifications-1
FT-950 Technical Supplement
Introduction
Specifications
Exploded View
Block Diagram
Connection Diagram
WIRE ASSY List
Alignment
Board Unit (Schematics, Layouts & Parts)
MAIN Unit
CNTL Unit
LOCAL Unit
PA-A Unit
TUNER Unit
DSP Unit/DSP2 Unit
SW-A Unit
SW-B Unit
VR-A Unit
VR-B Unit
PHONE Unit
MIC Unit
KEY Unit
DVS-6 Unit (Option)
FT-950
Technical supplement
Contents
©
2010 VERTEX STANDARD CO., LTD.
Introduction
This manual provides technical information neces-
sary for servicing the FT-950 HF/50 MHz Trans-
ceiver.
Servicing this equipment requires expertise in han-
dling 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 com-
ponents, and the other has either a mixture of both
chip and leaded components (trimmers, coils, elec-
trolytic capacitors, ICs, etc.), or leaded components
only.
While we believe the technical information in this
manual to be correct, VERTEX STANDARD as-
sumes 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 in-
consistencies in the technical information would be
appreciated.
EH031H90D
Important Note
This transceiver was assembled using Pb (lead) free solder, based on the RoHS specification.
Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this apparatus. The solder
stated above utilizes the alloy composition required for compliance with the lead-free specification, and any solder with the
above alloy composition may be used.
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