Table Of Contents - Kenwood NX-320 Series Service Manual

Table of Contents

Table Of Contents2
General3
Personal Safety3
System Set-Up4
Realignment5
Modes5
How To Enter Each Mode5
Pc Mode5
Kpg-22A Description6
Kpg-22U Description6
Kct-53U Description (Usb Adapter: Option)6
Clone Mode6
Disassembly For Repair8
Precautions For Disassembly8
Removing The Mechanical Stopper8
Removing The Tx-Rx Unit From The Chassis8
Precautions For Reassembly9
Removing The Speaker Holder9
Removing The Top Packing9
Mounting The Chassis Onto The Case9
Forming The Flat Cable10
Changing The Channel Selector From 16-Channel10
Connection Place Of The Antenna Hot Pin And Antenna Terminal10
Align The Sp/Mic Lead Wire10
Assembly Information (Sheet/Cushion)11
Circuit Description12
Frequency Confi Guration12
Receiver System12
Rf Circuit12
If Circuit13
Audio Amplifier Circuit13
Squelch Circuit13
Audio Band Circuit13
Vox14
Drive And Final Amplifier14
Apc Circuit14
Pll Frequency Synthesizer14
Control Circuit15
Asic15
Memory Circuit15
Local Switch15
Key Detection Circuit16
Low Battery Warning16
Power Supply Circuit16
Signaling Circuit16
Components Description18
Display Unit (X54-3760-Xx)18
Tx-Rx Unit (X57-8050-Xx)18
Parts List20
Exploded View30
Packing31
Trouble Shooting32
Fault Diagnosis Of The Bga (Ball Grid Array) Ic32
Checking Power Supply Voltage32
Replacing Tx-Rx Unit33
Descriptions Of Signal Names33
Tx-Rx Unit Information33
Supplied Accessories of "Service TX-RX Unit"34
"Service TX-RX Unit" Data34
After Changing The Pcb34
Esn Label Layout34
Adjustment (K Type)35
Controls35
Panel Test Mode35
Test Mode Operation Features35
Panel Tuning Mode36
Frequency And Signaling36
Test Frequency36
Analog Mode Signaling36
Adjustment Item Supplement37
Adjustment Item And Adjustment Range38
Panel Tuning Mode Flow Chart39
Test Equipment Required For Alignment41
Antenna Connector Adapter41
Nut Wrench41
Battery Jig41
Radio Check Section42
Common Section43
Transmitter Section45
Necessary Deviation Adjustment Item For Each Signaling And Mode50
Receiver Section50
Panel Test Mode (E And E2 Models Only)54
Preparations For Checking/Tuning The Transceiver54
E Type54
Adjustment (E Type)55
Panel Tuning Mode (E And E2 Models Only)55
Terminal Function76
Display Unit (X54-3760-Xx A/3)76
Display Unit (X54-3760-Xx B/3)76
Sp/Mic Connector Specification77
Pc Board78
Level Diagram86
Interconnection Diagram87
Schematic Diagram88
Block Diagram98
Optional Accessories101
Knb-55L (Li-Ion Battery Pack)101
Knb-56N (Ni-Mh Battery Pack)101
Knb-57L (Li-Ion Battery Pack)101
Specifications (K Type)102
Specifications (E Type)103