Hytera RD988 - Table of Contents

Service Manual
Contents
1. Revision History ...................................................................................................................................1
2. Copyright Information...........................................................................................................................2
3. Disclaimer.............................................................................................................................................
3
4. Introduction...........................................................................................................................................4
5. Product Controls...................................................................................................................................5
Front Panel........................................................................................................................................5
Rear Pan
e
l ........................................................................................................................................5
6. Baseband Section ................................................................................................................................6
6.1 Front Panel..................................................................................................................................6
6.2 Main Board................................................................................................................................10
6.3 PCB Vi
ew..................................................................................................................................23
6.4 Block Diagram...........................................................................................................................27
6.5 Schematic Diagram...................................................................................................................
29
6.6 Parts List ...................................................................................................................................
43
6.7 T
roubleshooting Flow Chart ......................................................................................................77
7. Tuning Description..............................................................................................................................78
8. Interface Definition .............................................................................................................................79
9.UHF1 (400-470MHz) Information ........................................................................................................84
9.1 TX Circuit...................................................................................................................................84
9.2 RX Circuit..................................................................................................................................86
9.3 Frequency Generation Unit (FGU) ............................................................................................88
9.4 PCB View..................................................................................................................................
90
9.5 Block Diagram...........................................................................................................................96
9.6 Schematic Diagram...................................................................................................................
99
9.7 Parts List .................................................................................................................................
108
9.8 T
roubleshooting Flow Chart ....................................................................................................13
9
10. UHF2 (450-520MHz) Information ...................................................................................................144
10.1 TX Circuit...............................................................................................................................144