Kirisun PT8000, Service Manual

                                         PT8000 Service Manual

11

rubber plug for external speaker jack (See Figure 6.2). 

Figure 6.2 

④

 Remove the flat cable and the speaker wire, and then remove 

the solder between the antenna connector and the RF-PCB with a 

soldering iron. Screw off the screws, and take the RF-PCB out of 

the top Al case carefully (See Figure 6.3). 

Figure 6.3 

2) Key-PCB disassembly 

①

 Screw off the six M3*25 screws on the Al bottom case, and 

remove the bottom case (See Figure 6.4). 

②

 Remove the flat cable and speaker wire (See Figure 6.4).   

③

 Screw off the two M2.5*5 screws on the front cabinet, and then 

separate the front cabinet from the main machine (See Figure 6.4).   

④

 Pull out the volume knob, and then remove the circlip and nut 

for volume knob (See Figure 6.4). 

⑤

 Screw off the five fixing screws (M2.6*6) for Key-PCB, and 

then take the Key-PCB out of the plastic front cabinet (See Figure 

6.4). 

Figure 6.4 

After the disassembly above, you can repair and adjust the 

radio according its actual malfunction.   

Chapter 7 Adjustment 

Before test/adjustment, make sure all equipment has been 

grounded! 

   Before test/adjustment, make sure the antenna output terminal 

has been correctly connected to corresponding equipment or load! 

      The transmitter output terminal must be terminated with an RF 

power attenuator and connected to a standard signal generator 

(SSG)/frequency counter/deviation meter/spectrum analyzer! 

   Make sure no transmission operation is being conducted while 

measuring the receiver! 

   During the adjustment/test/maintenance, make sure reliable 

anti-static measures are taken for human body and equipment.   

7.1 Equipment and Software Required for Test and 

Adjustment 

   Equipment and software listed in Table 7.1 are required for 

test and adjustment of PT8000. 

Table 7.1 Equipment and Software Required for Test and 

Adjustment 

No. 

Name 

Specifications 

1 Computer 

P2 or above, IBM compatible PC, WINDOWS 
98/ME/2000/XP Operating System 

2 

Programming 
software 

KSP8000 

3 

Programming 
cable 

KSPL05 

4 Clone 

cable 

 KCL02 

5 

DC regulated 
power supply 

Output voltage: 13.8V 
Output current: 

≥

 20A 

6 

RF power 
meter 

Measurement range: 0.5-50W 
Frequency range: 100MHz-500MHz 
Impedance: 50

Ω

SWR 

≤

 1.2 

7 

Frequency 
counter 

Frequency range: 0.1-600MHz 
Frequency accuracy: better than ±1×10

-6

Sensitivity: better than 100mV 

8 

Deviation 
meter 

Frequency range: DC600MHz 
Measurement range: 0 - ±5kHz