Kirisun PT4208 Service Manual

Dangerous!
Do not connect the AC power or DC power over
8.6V with any connector or terminal of the radio.
Otherwise it will cause fire, electric shock or
damage to the radio.
Warning!
Do not reverse power connection.
It may cause harm to the radio if signal input on
the antenna connector is bigger than 20 dBm
(100mW).
Do not turn on the power before the antenna or
load connection is completed.
If the antenna has been damaged, do not use the
radio. Damaged antenna may cause lightly burning
on skin.
Though the radio is waterproof, it's better to
avoid putting it in rain or snow, or any other liquid
to ensure its life and performance.
Statement!
Kirisun Electronics (Shenzhen) Co., Ltd owns
the copyright of KSP4208 software.
Unauthorized Duplication of KSP4208 software
is strictly prohibited.
Kirisun Electronics (Shenzhen) Co., Ltd owns
the copyright of the MCU software.
Kirisun Electronics (Shenzhen) Co., Ltd owns
the copyright of the radio outward/structure/circuit
design.
Kirisun Electronics (Shenzhen) Co., Ltd owns
the copyright of this service manual. Unauthorized
publication is prohibited.
Kirisun Electronics (Shenzhen) Co., Ltd owns
the trademarks "KIRISUN", "
Chapter 1 Overview..............................................................................1
Chapter 2 Radio Overview.......................................................................1
Chapter 3 Circuit Introduction...................................................................2
Chapter 4 Mode Introduction....................................................................8
Chapter 5 Maintenance, Assembly and Disassembly.......................................10
Chapter 6 Overall Debugging..................................................................12
Chapter 7 Major Specifications................................................................15
Chapter 8 Trouble Shootings and Solutions .................................................15
Chapter 9 KBC-70C Charger..................................................................16
Appendix 1 Abbreviations......................................................................17
Appendix 2 Electronic components list.......................................................18
Appendix 3 Damageable components list.....................................................23
Appendix 4 Framework components list......................................................25
Appendix 5 Accessories.........................................................................26
Figure 1 PT4208 Schematic Circuit Diagram (420-470MHz).............................27
Figure 2 PT4208 Main Board Schematic Circuit Diagram (420-470MHz)..............28
Figure 3 PT4208 Top Main Board Position Mark Diagram (420-470MHz).............29
Figure 4 PT4208 Bottom Main Board Position Mark Diagram (420-470MHz).........30
Figure 5 PT4208 Top Main Board Numerical Value Diagram (420-470MHz)..........31
Figure 6 PT4208 Bottom Main Board Numerical Value Diagram (420-470MHz)......32
Figure 7 PT4208 Top Main Board Circuit Connection Diagram (420-470MHz).......33
Figure 8 PT4208 Bottom Main Board Circuit Connection Diagram (420-470MHz)...34
Figure 9 PT4208 Main Board Schematic Circuit Diagram (136-174MHz)..............35
Figure 10 PT4208 Top Main Board Position Mark Diagram (136-174MHz)............36
Figure 11 PT4208 Bottom Main Board Position Mark Diagram (136-174MHz).......37
Figure 12 PT4208 Top Main Board Numerical Value Diagram (136-174MHz).........38
Figure 13 PT4208 Bottom Main Board Numerical Value Diagram (136-174MHz)....39
Figure 14 PT4208 Top Main Board Circuit Connection Diagram (136-174MHz)......40
Figure 15 PT4208 Bottom Main Board Circuit Connection Diagram (136-174MHz).41
Figure 16 KBC-70C Schematic Circuit Diagram............................................42
Figure 17 KBC-70C Top Main Board Numerical Value Diagram.........................43
Figure 18 KBC-70C Top Main Board Position Mark Diagram............................44
Figure 19 KBC-70C Bottom Main Board Numerical Value Diagram.....................45
Figure 20 KBC-70C Bottom Main Board Position Mark Diagram........................46
Figure 21 KBC-70C Circuit Connection Diagram..........................................47
", "科立讯".
PT4208 Service Manual
Contents