Yaesu FT-101ZD - Service Manual

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Index2
General Information: Table of Contents4
Transceiver View5
General Description5
Specifications6
FT-101ZD Series Model Chart7
Recommended Accessories8
FV-901DM Synthesized, Scanning Remote VFO8
FTV-901 Vhf/Uhf/Oscar Transverter8
YO-901 Multiscope9
SP-901P Speaker/Hybrid Phone Patch9
FC-901 Antenna Coupler9
Controls and Switches10
Key/MIC/Acc Plugs Diagrams12
VFO Plug Diagram12
Pin Plug Diagram12
Headphone and External Speaker Plugs Diagrams12
Rear Apron View and Description13
Accessories14
Microphone Connections Views and Diagrams15
Interconnections Diagrams16
Interconnections Diagrams (Cont)17
Installation18
Preliminary Inspection18
Base Station Installation18
Mobile Installation19
Antenna Considerations19
Operation20
Initial Check20
Receive Operation20
Transmitter Tuning21
Loading Positions21
Final Tuning21
SSB Operation22
RF Speech Processor Adjustment22
CW Operation22
AM Operation (with Optional am Unit) (after Prod. #8)23
FM Operation (with Optional FM Unit) (after Prod. #8)23
Select Switches23
Dial Calibration and Frequency Determination23
Fixed Channel Crystal Information24
Tecnhical Notes: Table of Contents25
Part Designations on Circuit Boards26
FT-101Z Circuit Boards26
Signal Tracing in the FT-101ZD26
SSB/CW Mode RX FT-101ZD Block Diagram27
SSB Mode TX FT-101ZD Block Diagram28
CW Mode TX FT-101ZD Block Diagram29
AM Mode RX FT-101ZD Block Diagram30
AM Mode TX FT-101ZD Block Diagram31
Frequency Relationships Diagram32
Crystal Data FT-101ZD Table32
Circuit Description33
Receiver33
FT Unit (PB-1960) Early Model (before Prod. #17)33
IF Unit (PB-1963)33
SSB, CW Filters/Width Filter Diagram34
Width Control Action Diagram34
NB-FIX Unit (PB-1961)36
AF Unit (PB-1964)36
Marker Generator36
Transmit Circuit38
SSB Mode/Af Unit (PB-1964)38
RF Unit (PB-1960)/Drive Unit (PB-1714), PA Unit (PB-1715)38
CW Mode/Drive Unit (PB-1714), PA Unit (PB-1715)38
VOX Circuit39
CW Sidetone/Am Mode39
Common Circuits39
VFO Unit (PB-1440B-3420)39
NB and Fix Unit (PB-1961)40
Premix Local Unit (PB-1711) (before Prod. #17)40
Premix Unit (PB-1962) (before Prod. #17)40
Counter Unit (PB-1978, PB-1979, PB-1980) (before Prod. #16)41
Power Supply43
Servicing: Table of Contents44
Outer Cover Removal46
Front Panel Removal47
Board Layout (Early Model, before Prod. #15)48
Pilot Light Replacement49
Counter Preset Switch Replacement49
CW Filter Installation50
Counter Unit Installation on FT-101Z51
FT-101Z/ZD Aux Band Installation52
Parts Needed52
Modification Procedure52
Alignment after Modification52
Example for 2.0-2.5 Mhz Wiring53
FT101Z Aux Band Table54
DC-DC Converter Installation55
Notes on Mobile Installation55
Cooling Fan Installation56
DC-DC Converter Exploded View56
Cooling Fan Installation (Option)56
DC-DC Converter (Exploded View)56
Soldering and Desoldering Technique on Printed Circuit Boards57
Notes on Use of CMOS IC's57
Insertion of Parts on Circuit Boards57
Basic Soldering Practice58
Soldering to Terminal Posts58
Examples of Poor Soldering Practice58
Circuit Trace Repair59
Modifications61
Modification of FV-901DM for Use with FT-101ZD61
Before/After Modification Diagrams62
Rectifier B Unit Modifications63
Rectifier B Unit Parts Layout64
Low-Pass Filter Addition65
VOX Circuit Modification66
Counter Circuit Modifications67
VFO Drift in Conjunction with Dimmer Control68
21.2 Mhz Spurious Suppression on FT-101Z (Analog Dial)69
AF Unit Capacitor Polarity Check70
Maintenance and Alignment71
AF Unit Alighment71
VOX Circuit: Antitrip Level Setting71
VOX Relay Delay Setting71
CW Sidetone72
Marker Frequency Setting72
Carrier Frequency Adjustment72
SSB Carrier Point72
Carrier Balance73
CW Carrier Point73
IF Unit Alignment74
Recrifier B Unit74
Bias Adjustment74
Variable if Bandwidth Alignment/Alc Meter Alignment74
VFO Unit75
Premix Local Unit/Premix Local Alignment75
NB-Fix Unit75
Fixed Channel Frequency Alignment75
NB-FIX Unit (PB-1961) View76
Premix Local (XTAL) Unit (PB-1965) View76
Premix Unit (PB-1962) View76
AM Unit (after Production Lot #8)77
Transmit RF/IF Transfotmer Alignment77
Receiver RF/IF/NB Transformer Alignment77
AM Unit (PB-2040) View77
Alignment of Transmitter Mixer/Driver and Receiver Front End Stages78
RF Unit (PB-1960) View78
Advice on Troubleshootiing the Driver/Final Amplifier Stages80
Final Amplifier Neutralization80
Rect a Unit (PB-1967) View80
Final Amplifier Compartment View80
Clarifier Alignment81
Counter Unit81
Frequency Counter Preset Switch Position Diagram81
Fault Localization82
10 Pin Extended Board View82
14 Pin Extended Board View82
Troubleshooting: a Fundamental Analysis of the Trouble83
Typical Part Failures, Causes and Symptoms84
Receive Mode: Troubleshooting Chart85
Transmitter: Troubleshooting Chart88
Common Circuits: Troubleshooting Chart90
Relay Connection Information92
RF Unit (PB-1960A) (Early Model) before Prod. #16 Schematics93
DC Voltages Table93
RF Unit Parts Layout94
Nb/Fix Unit (PB1961B) Schematics/DC Voltages Tables95
Nb/Fix Unit Parts Layout96
Premix Unit (PB1962A) (Early Model) before Prod. #16 Schematics97
Premix Unit Parts Layout98
IF Unit (PB-1963C) Schematics99
IF Unit Voltage Charts100
IF Unit Parts Layout (1)101
IF Unit Parts Layout (2)102
AF Unit (PB-1964) Schematics103
AF Unit Voltage Charts104
AF Unit Parts Layout (1)105
AF Unit Parts Layout (2)106
Premix Local Unit (PB1965) (Prod. #01~#16) Schematics107
Premix Local Unit (PB1965) DC Voltages107
Premix Local Unit Parts Layout108
VFO Assembly VFO Board (PB-1440B-3420) Schematics109
VFO Assembly Parts Layout110
VFO Unit Exploded View110
Rect a Unit (High/Low Voltages) Unit (PB-1967) Schematics111
Capacitor Unit (PB-1969A) Schematics112
Rect B (Medium/Bias Voltages) Unit (PB-1968B) Schematics113
Rect B (Medium/Bias Voltages) Unit (PB-1968B) DC Voltages Chart113
Rect B Unit Parts Layout114
Trimmer a Board (PB-1970A) Schematics115
Trimmer a Board (PB-1970B) Schematics115
Trimmer C Board (PB-1092) Schematics116
LED Unit (PB-1974A) Select Switch Unit (PB-1966C) Schematics117
Band Width Control Unit (PB-1972) Schematics118
Clarifier Unit (PB-1973)118
Lever Switch Unit (PB-1975A) Schematics119
Counter Unit Parts Layout121
Removal of Counter and Display Units122
Driver Board (PB-1714A) Layout124
Final Board (PB-1715A) Layout124
AM Unit (PB-2040) Schematics125
AM Unit (PB-2040) DC Voltages Chart125
AM Unit Parts Layout126
Repair Parts: Table of Contents128
Parts List and Ordering Forms129
Parts List133
Late Model Update: Table of Contents147
High-Performance HF Transceiver Yaesu FT-101ZD View and General Description148
High-Performance HF Transceiver Yaesu FT-101ZD Controls and Switches149
High-Performance HF Transceiver Yaesu FT-101ZD Plugs Views151
High-Performance HF Transceiver Yaesu FT-101ZD Rear Apron152
High-Performance HF Transceiver Yaesu FT-101ZD Accessories153
High-Performance HF Transceiver Yaesu FT-101ZD Block Diagram154
High-Performance HF Transceiver Yaesu FT-101ZD Receiver: Circuit Description155
FM Unit (PB-2219) Option156
APF Unit (PB-2217)157
RF Unit (PB-2154)/FM Mode158
High-Performance HF Transceiver Yaesu FT-101ZD Common Circuits: Premix Local Unit (PB-2153)159
Premix Local (XTAL) Unit (PB-2153)159
Premix Unit (PB-2152)160
Counter Unit (PB-2086A-3420/PB-2098)161
Counter Unit (PB-2086A) View162
High-Performance HF Transceiver Yaesu FT-101ZD: Maintenance and Aligmnent/Premix Local Alignment164
Premix Local (XTAL) Unit (PB-2153) Diagram164
Premix Unit (PB-2152) Diagram165
High-Performance HF Transceiver Yaesu FT-101ZD Adjustments (Cont)166
Optional Installations167
FT-101ZD DC-DC Converter Installation167
Counter Unit (PB-2086A) Installation on FT-101Z169
FM Unit Installation170
AM Unit Installation171
List of Parts172
FT-101ZD Circuit Diagram190

Yaesu FT-101ZD - Service Manual

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