Equipment information:

Yaesu FT-980 Transceiver
Manufacturer:
Yaesu
Model: FT-980
Date:
Category: Radio, Communication
Group: Transceiver
Description:
Information:
                                    

These manuals are available for the above equipment:

Yaesu -- FT-980 -- Service Manual
File name: Yaesu-6238-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 203
Size: 35.23 Mbytes (36936976 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: b1e98e01d72db0b067620833c4016c9d
ed2kID: 1de337646046bef41bfdc45fcc6bda13
Downloads: 257 since 27 July 2014
Information:
ERRATA FOR THE FT-980 OPERATING MANUAL ................. 2

SOLDERING AND DESOLDERING TECHNIQUE.................... 4

GENERAL PERFORMANCE IMPROVEMENT MODIFICATIONS........ 7

CAT SYSTEM SERIAL I/O DATA MANUAL .......................13

UNIT LOCATIONS .............................................18

SERVICE AND ALIGNMENT.....................................20

COMPONENT APPLICATIONS....................................32

FREQUENCY RELATIONSHIPS ..................................49

SIGNAL PATHS................................................50

CPU BOARD BLOCK DIAGRAM..................................54

CONNECTION DIAGRAM .......................................55

PARTS LAYOUTS, SCHEMATICS, SIGNAL LEVELS AND VOLTAGE CHARTS

RF UNIT .................................................56

IF UNIT .................................................60

AF UNIT.................................................63

VFO UNIT................................................66

PLL AND VCO UNITS......................................69

CPU UNIT ................................................74

FSK UNIT ................................................77

LPF AND RELAY UNITS ...................................79

PROTECTOR UNIT.........................................80

DIAL UNIT ...............................................81

REG UNIT................................................83

CONTROL UNIT...........................................85

KEY MATRIX UNIT........................................86

DISPLAY UNITS (A, B and C) ...............................87

MONITOR UNIT...........................................90

100W PA UNIT............................................91

10W PA UNIT.............................................92

I00W PS UNIT ............................................93

J 0W PS UNIT .............................................94

PI UNIT..................................................95

MISCELLANEOUS UNITS ...................................96

FIF-80 INTERFACE UNIT...................................97

FRONT PANEL EXPLODED VIEW................................98

REAR PANEL EXPLODED VIEWS................................99

PARTS LIST..................................................100


This manual is intended to serve as a technical supplement
to the FT-980 Operating Manual. Detailed information
regarding functions, installation, interconnections,
operation, and installation of options has been provided in
the Operating Manual, and is not reprinted herein.
Therefore, this Technical Supplement is not intended to
serve as an independent reference, but to be used in
conjunction with the information provided in the Operating
Manual.

Because there are nearly eight hundred semiconductor devices
in the FT-980, circuit description information is provided
in the form of numerous block diagrams and a complete
Component Applications list. It is our hope that this manner
of providing functional information will prove to be more
convenient for the owner and technician than would a lengthy
verbal description. Those readers who are not familiar with
the basic types of analog and digital circuits that serve as
the building blocks of the FT-980 are encouraged to study
instructional material, such as that contained in handbooks
on amateur radio and digital circuit design, before
attempting to understand the design of the FT-980. Each
block in the block diagrams represents one such basic
circuit, while the Component Applications list provides
additional details for each semiconductor. Specific circuit
details are provided in the schematic diagrams.
Yaesu-6238-Manual-Page-1-Picture
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