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Manuals
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Transceiver
FT-707
Maintenance service manual
Yaesu FT-707 Maintenance Service Manual
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:
Instruction manual
(56 pages)
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Instruction manual
(56 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Index
General
General Description
Specifications
Semiconductors
Accessories
Front Panel Controls and Switches
Rear Panel Connections
Microphone Connections
Installation
Antenna Considerations
Ground Connections
Power Requirements
Power Cord Connections
Base Station Installation
Power Supply FP-707 Circuit Diagram
FP-707 Power Transformer Primary Connections
Interconnections
Relay Box FRB-707
Antenna Tuner FC-707
Operation
Initial Check
Frequency Determination
Receive Operation
SSB Mode
AM Mode
CW Mode
Technical Notes
SSB/CW Mode RX
AM Mode RX
SSB Mode TX
CW Mode TX
AM Mode TX
RX Frequency Relationships
Crystal Data: FT-707
TX Control Line Circuit
Circuit Description
AF Unit (PB-2095)
Marker Generator
Transmitter
Ssb
Cw
ALC Circuit
Common Circuit
VOX Circuit
VFO Unit (PB-2097)
Premix Circuit (AF Unit)
Counter Unit (PB-2086A)
Servicing
Outer Cover Removal
Front Panel Removal (A)
Front Panel Removal(B)
Rear Panel Removal
100W PA Unit Removal
Main Chassis Exploded View
Board Layout
Soldering and Desoldering Technique on Printed Circuit Boards
Insertion of Parts on Circuit Boards
Circuit Trace Repair
CW Filter Installation
FIX (Crystal Controlled) Operation
Modifications
S/N Improvement on 80M Band
Modification to Eliminate "Clicking" Noise on CW
TX IMD Distortion Improvement
Marker Modification
Premix Modification
Receiver Input Circuit Modification
WARC TX Modification
Counter Unit
Maintenance and Alignment
Equipment Required
Note Regarding Measurement Levels
Vox Adjustment
S-Meter Alignment
AF Unit Alignment Points
CW Sidetone Level Adjustment
Marker Alignment
IF Unit Alignment Points
Carrier Balance Adjustment
CW Carrier Point Alignment
VFO Unit
Local Oscillator Circuits
Premix Bandpass Filter
RF Unit Alignment Points
Antenna Coil/Rf Bandpass Filter Alignment
Antenna Coil Adjustment
RF Bandpass Filter Adjustment
RF Bandpass Filter
Antenna Trap Coil Alignment
Clarifier Alignment
PO Meter Setting
LPF Unit
Directional Coupler Balance
ALC Circuit Alignment
Fault Identification and Localization
Troubleshooting
Fundamental Analysis of the Trouble
Mechanical Defects
Electrical Defects
Receive Mode
Relay Connection Information
Parts Layout
Voltage Chart
AVR Unit Parts Layout (PB-2099A)
Voltage Chart (DC Volts)
Counter Unit Parts Layout
VFO Assembly
VFO Unit (PB-2097A)
VFO Unit Parts Layout (PB-2097A)
VFO Unit Exploded View
LPF Unit Parts Layout (PB-2128)
LPF Unit Mounting Detail
100W PA Unit (PB-2013)
100W PA Unit Parts Layout
100W PA Unit Assembly
HPF/FAN Motor Control Unit Parts Layout (PB-2101)
Level Meter (Indicator) Unit Parts Layout (PB-2100)
SW Unit Parts Layout (PB-2102)
VR Unit A/B (PB-2103A)
Switch Assemblies
Band Switch Assembly
Mode Switch Assembly
Potentiometer Assemblies
Repair Parts
Parts List and Ordering Data
Parts Order Example
Parts List
Power Supply FP-707
Schematic Diagram
FT-707 Connection Diagram
Wiring Diagram
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Quick Links
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Specifications
2
Power Supply Fp-707 Circuit Diagram
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Instruction Manual
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