Kenwood NX-320 Series Manuals

Kenwood NX-320 Series Manuals

Manuals and User Guides for Kenwood NX-320 Series. We have 1 Kenwood NX-320 Series manual available for free PDF download: Service Manual

Kenwood NX-320 Series Service Manual

Kenwood NX-320 Series Service Manual (111 pages)

UHF DIGITAL TRANSCEIVER Kenwood NX-320 Series

Brand: Kenwood | Category: Transceiver | Size: 2.49 MB

Table of Contents

Table of Contents
2
Personal Safety
3
General
3
System Set-Up
4
- Modes
  5
- How to Enter each Mode
  5
- PC Mode
  5
Realignment
5
Disassembly for Repair
8
Circuit Description
12
- IF Circuit
  13
- Audio Amplifier Circuit
  13
- Squelch Circuit
  13
- Audio Band Circuit
  13
- APC Circuit
  14
- PLL Frequency Synthesizer
  14
- Drive and Final Amplifier
  14
- Vox
  14
- Control Circuit
  15
- Asic
  15
- Memory Circuit
  15
- Local Switch
  15
- Key Detection Circuit
  16
- Low Battery Warning
  16
- Power Supply Circuit
  16
- Signaling Circuit
  16
- Display Unit (X54-3760-XX)
  18
- TX-RX Unit (X57-8050-XX)
  18
Components Description
18
Parts List
20
Exploded View
30
Packing
31
- Fault Diagnosis of the BGA (Ball Grid Array) IC
  32
- Checking Power Supply Voltage
  32
Trouble Shooting
32
- Replacing TX-RX Unit
  33
- Descriptions of Signal Names
  33
- TX-RX Unit Information
  33
- Supplied Accessories of “Service TX-RX Unit”
  34
- “Service TX-RX Unit” Data
  34
- After Changing the PCB
  34
- ESN Label Layout
  34
- Test Mode Operation Features
  35
- Controls
  35
- Panel Test Mode
  35
- Adjustment (K Type)
  35
- Panel Tuning Mode
  36
- Frequency and Signaling
  36
- Test Frequency
  36
- Analog Mode Signaling
  36
- Adjustment Item Supplement
  37
- Adjustment Item and Adjustment Range
  38
- Panel Tuning Mode Flow Chart
  39
- Battery Jig
  41
- Test Equipment Required for Alignment
  41
- Nut Wrench
  41
- Antenna Connector Adapter
  41
- Radio Check Section
  42
- Common Section
  43
- Transmitter Section
  45
- Necessary Deviation Adjustment Item for each Signaling and Mode
  50
- Receiver Section
  50
- Panel Test Mode (E and E2 Models Only)
  54
- Preparations for Checking/Tuning the Transceiver
  54
E Type
54
Terminal Function
76
SP/MIC Connector Specification
77
Pc Board
78
- Display Unit (X54-3760-XX)
  78
- Tx-Rx Unit (X57-8050-XX)
  82
Level Diagram
86
Interconnection Diagram
87
Schematic Diagram
88
Block Diagram
98
Optional Accessories
101
- 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

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