Kirisun DP770 Service Manual

DP770 Service Manual
Contents
1. General Introduction ................................................................................................................................... 3
1.
1. Scope ....................................................................................................................................................................... 3
1.2. Safety Precaution ................................................................................................................................................... 3
2. External View and Functional Keys .......................................................................................................... 4
2.
1. External View and Functional Keys ..................................................................................................................... 4
2.2. LED Indicator .......................................................................................................................................................... 5
3. Circuit Description ...................................................................................................................................... 6
3.
1. RF Section ............................................................................................................................................................... 6
3.1.1. Transmitter Circuit.................................................................................................................................. 6
3.1.2. Receiver Circuit ..................................................................................................................................... 8
3.1.3. Frequency Generation Unit ................................................................................................................... 9
3.1.4. GPS Circuit .......................................................................................................................................... 10
3.2. Baseband Section ................................................................................................................................................ 11
3.2.1. Power Section ...................................................................................................................................... 11
3.2.2. Audio Section ....................................................................................................................................... 11
4. Function Instruction and Parameters Setting ....................................................................................... 13
4.
1. General Functions ................................................................................................................................................ 13
4.2. Parameters Setting .............................................................................................................................................. 14
5. Assembly and Disassembly .................................................................................................................... 17
5.1. Attaching and Detaching the Battery ................................................................................................................. 17
5.2. Attaching and Detaching the Antenna ............................................................................................................... 18
5.3. Attaching and Detaching the Belt Clip ............................................................................................................... 19
5.4. Detaching the Chassis ......................................................................................................................................... 19
5.5. Removing the PCB board from the Chassis .................................................................................................... 20
5.6. Detaching the Keypad Board from the Case.................................................................................................... 20
5.7. Exploded View ...................................................................................................................................................... 22
6. Tune Mode ................................................................................................................................................. 25
6.
1. Required parts in adjustment .............................................................................................................................. 25
6.2. Adjusting and checking method ......................................................................................................................... 25
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Kirisun DP770 Specifications

General

Brand	Kirisun
Model	DP770
Category	Radio
Language	English