Kirisun DP990, Руководство по обслуживанию

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DP990/DP995service manual
1
CATELOG
1. Overview ......................................................................................................................................................................... 3
1.1. Range of Application....................................................................................................................................................3
1.2. Safety Precautions........................................................................................................................................................3
1.3. Maintenance Service .................................................................................................................................................... 3
2. Appearance and LED Indicator.......................................................................................................................................4
2.1. Appearance................................................................................................................................................................... 4
2.2. LED Indicator...............................................................................................................................................................5
3. Circuit Description.......................................................................................................................................................... 6
3.1. Overall Circuit..............................................................................................................................................................6
3.2. Tx Circuit ......................................................................................................................................................................7
3.3. Rx Circuit..................................................................................................................................................................... 8
3.4. Frequency Synthesizer Circuit .....................................................................................................................................9
3.5. GPS Circuit .................................................................................................................................................................10
3.6. Baseband Circuit........................................................................................................................................................ 10
3.6.1. Power Supply Circuit .............................................................................................................................................. 10
3.6.2. Audio Circuit ........................................................................................................................................................... 11
4. Functions and Parameters ............................................................................................................................................. 12
4.1. Basic Functions.......................................................................................................................................................... 12
4.2. Advanced Functions................................................................................................................................................... 12
4.3. Settings....................................................................................................................................................................... 12
5. Assembly and Disassembly...........................................................................................................................................13
5.1. Installing/Uninstalling the Battery .............................................................................................................................13
5.2. Installing/Uninstalling the Antenna........................................................................................................................... 14
5.3. Installing/Uninstalling Belt Clip................................................................................................................................ 14
5.4. Disassembling Aluminum-alloy Holder and Components of Main Part...................................................................14
5.5. Detaching Main Board from Aluminum-Alloy Holder............................................................................................. 15
5.6. Detaching Key Board.................................................................................................................................................15
5.7. Explosion Diagram.....................................................................................................................................................16
6. Tuning............................................................................................................................................................................21
6.1. Preparation..................................................................................................................................................................21
6.2. Tuning (PC Mode) ......................................................................................................................................................22
6.2.1. Frequency Bands.....................................................................................................................................................22
6.2.2. VCO.........................................................................................................................................................................22
6.2.3. Tx.............................................................................................................................................................................22
6.2.4. VOX........................................................................................................................................................................ 23
6.2.5. Low Voltage (Tx) .................................................................................................................................................... 23
6.2.6. Rx............................................................................................................................................................................ 23
6.3. Test Items (Test Mode only) .......................................................................................................................................23
6.3.1. Rx............................................................................................................................................................................ 23
6.3.2. Tx.............................................................................................................................................................................24
7. Technical Specifications................................................................................................................................................24
8. Repairing and Testing Devices......................................................................................................................................25
9. Troubleshooting.............................................................................................................................................................25
Appendix 1 Material Lists and Schematic Diagrams (400~480 MHZ) ........................................................................... 27
Table 1 Material List (Electronic Part) ..............................................................................................................................27
Appendix 2 Material Lists and Schematic Diagrams (350~400 MHZ) ........................................................................... 37
Table 2 Material List (Electronic Part) ............................................................................................................................. 37
Figure 1 Top-layer Layout Drawing of Main Board.........................................................................................................46
Figure 2 Bottom-layer Layout Drawing of Main Board...................................................................................................46
Figure 3 Top-layer Layout Drawing of Key Board...........................................................................................................47