Table Of Contents - Hytera DMR Service Manual

1. Revision History ............................................................................................................................................... 1
2. Copyright Information...................................................................................................................................... 2
3. Disclaimer........................................................................................................................................................ 3
4. Product Overview ............................................................................................................................................ 4
5. Product Controls .............................................................................................................................................. 5
6. Front Panel ...................................................................................................................................................... 7
7. Baseband Section............................................................................................................................................. 9
7.1 Power Section .......................................................................................................................................................... 9
7.2 Power On/Off......................................................................................................................................................... 10
7.3 Clock ....................................................................................................................................................................... 11
7.4 Interface Distribution............................................................................................................................................. 11
7.5 Audio Section ......................................................................................................................................................... 15
7.6 PCB Difference ....................................................................................................................................................... 19
8. GPS Circuit ..................................................................................................................................................... 20
8.1 Circuit Description.................................................................................................................................................. 20
8.2 Schematic Diagram ................................................................................................................................................ 20
8.3 Parts List ................................................................................................................................................................. 21
8.4 Troubleshooting Flow Chart .................................................................................................................................. 22
9. Tuning Description ......................................................................................................................................... 23
10. Interface Definition .................................................................................................................................... 24
11. UHF1 (400‐470MHz 25W) Information ........................................................................................................ 27
11.1 Transmitter Circuit ............................................................................................................................................... 27
11.2 Receiver Circuit .................................................................................................................................................... 29
11.3 Frequency Generation Unit (FGU) ....................................................................................................................... 30
11.4 PCB View .............................................................................................................................................................. 33
11.5 Block Diagram ...................................................................................................................................................... 37
11.6 Schematic Diagram .............................................................................................................................................. 40
11.7 Parts List ............................................................................................................................................................... 54
Contents
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Service Manual