Kirisun DP680 Manuals

Kirisun DP680 Manuals

Manuals and User Guides for Kirisun DP680. We have 1 Kirisun DP680 manual available for free PDF download: Service Manual

Kirisun DP680 Service Manual

Kirisun DP680 Service Manual (91 pages)

Brand: Kirisun | Category: Portable Radio | Size: 9 MB

Table of Contents

Revision History
2
Table of Contents
3
Overview
5
Range of Application
5
Safety Precautions
5
Maintenance Service
6
Appearance and Led Indicator
6
Appearance
6
Led Indicator
7
Circuit Description
8
Main-Board Circuit Diagram
8
Tx Circuit
9
Rx Circuit
10
Frequency Generation Unit (Fgu)
11
Working Principle of PLL
11
Working Principle of VCO
12
Two- Point Modulation
12
Gps Circuit
12
Baseband Circuits
13
Power Supply Circuit
13
Audio Processing Circuit
14
Audio Signal Flow
14
Settings
15
Assembly and Disassembly
16
Installing and Uninstalling the Battery
16
Installing and Uninstalling the Antenna
16
Installing and Uninstalling Belt Clip
17
Disassembling Aluminum-Alloy Holder and Components of Main Part
17
Detaching Main Board from Aluminum-Alloy Holder
17
Uninstalling Keys from Upper Housing
18
Explosion Diagram
19
Tuning
21
Tuning Method
21
Tuning Components
21
Tuning in PC Mode
22
Radio Test
23
Technical Specifications
24
Devices for Maintenance and Test
25
Troubleshooting
26
Appendix 1 Abbreviations
27
Able 1 400~470Mh Main -Board Material List
28
Appendix 2 Material List (Electronic Section)
28
Able 2 350~400Mh Main -Board Material List
55
Appendix 3 Schematic Diagrams and Layout Drawings
82

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