Table Of Contents - Kenwood NX-720 Service Manual

Table of Contents

Table Of Contents1
Safety Installation2
Pre-Installation2
General2
Radio3
Dc Power And Wiring3
Antenna System3
Radio Location3
System Set-Up4
Realignment4
Firmware Programming Mode5
Connection Procedure5
Clone Mode6
Firmware Version Information6
How To Enter The Data Password6
Flow Chart (Source Transceiver)6
Installation7
Connection Cable7
Horn Alert Function7
Ignition Sense Cable7
External Speaker8
Changing Serial Port Level8
Changing Of Signal Type8
Disassembly For Repair9
Precautions For Reassembly10
Correspondence When Replacing The Led10
Circuit Description11
Frequency Configuration11
Receiver System11
Rf Circuit/If Circuit11
Transmitter System12
Baseband Circuit12
Drive And Final Amplifier12
Apc Circuit12
Pll Frequency Synthesizer13
Tcxo/Vco13
Pll Ic (Ic2)13
Local Switch13
Control Circuit14
Power Supply Circuit14
Memory Circuit14
Key Detection Circuit14
Signaling Circuit16
Compander Circuit16
Gps Circuit16
Display Unit17
Tx-Rx Unit17
Components Description17
Parts List19
Exploded View29
Fault Diagnosis Of The Bga (Ball Grid Array) Ic30
Trouble Shooting30
Printed Circuit Board Data33
After Changing The Pcb33
Attaching The Ecn Label33
Adjustment34
Controls Overview34
Preparations For Checking/Tuning The Transceiver34
Panel Test Mode34
Frequency And Signaling35
Led Indicator35
Panel Tuning Mode36
Key Operation36
5 Reference Level Adjustments Frequency36
9 Reference Level Adjustments Frequency36
Adjustment Item Supplement37
Adjustment Item And Adjustment Range38
Panel Tuning Mode Flow Chart39
Test Equipment Required For Alignment41
Test Cable For Microphone Input41
Mic Connector (Front Panel View)41
Tuning Cable41
Radio Check Section42
Terminal Function56
Pc Board60
Display Unit (X54-3830-10)60
Tx-Rx Unit (X57-8230-1X)62
Interconnection Diagram66
Schematic Diagram67
Block Diagram78
Level Diagram81
Optional Accessories82
Specifications83