Kirisun TP620 Service Manual
TP620 Service Manual
TP620 Service Manual
Contents
1. Overview ................................................................................................................................................... 1
1.1. Scope ............................................................................................................................................................... 1
1.2. Safety Precaution ............................................................................................................................................. 1
2. Introduction.............................................................................................................................................. 2
2.1. External Views and Functional Keys................................................................................................................ 2
2.2. LED Indicator ................................................................................................................................................... 2
3. Circuit Description .................................................................................................................................. 3
3.1. Tx/Rx Signal Procedure ................................................................................................................................... 3
3.1.1. Tx Circuit ....................................................................................................................................................... 3
3.1.2. Rx Circuit ....................................................................................................................................................... 4
3.1.3. Frequency Synthesizer Circuit ...................................................................................................................... 6
3.2. Power Section .................................................................................................................................................. 7
4. Function Description and Parameter Settings ..................................................................................... 8
4.1. Conventional Functions ................................................................................................................................... 8
4.2. Function Parameter Settings ........................................................................................................................... 8
5. Assemble and Disasse mble Instructions ........................................................................................... 11
5.1. Attaching and Detaching the Battery ............................................................................................................. 11
5.2. Attaching the antenna .................................................................................................................................... 12
5.3. Attaching the Speaker /Microphone ............................................................................................................... 13
5.4. Attaching the Belt Clip .................................................................................................................................... 13
5.5. Separating the Shell from the Chassis .......................................................................................................... 13
5.6. Separating the Aluminum Shell from the Main Board .................................................................................... 14
5.7. Exploded View ............................................................................................................................................... 15
6. Adjustment an d Test ............................................................................................................................. 17
6.1. Components for Adjustment ........................................................................................................................... 17
6.2. Adjustment Test Method ................................................................................................................................ 17
6.2.1. Frequency Description ................................................................................................................................ 17
6.2.2. T est Tools .................................................................................................................................................... 18
6.2.3. Tx T est and Modulation ............................................................................................................................... 18
6.2.4. Rx T est and Modulation ............................................................................................................................... 20
7. T ech nical Functi ons and Specifications ............................................................................................. 21
8. Maintenance and Test Equipment ....................................................................................................... 23
9. Troubleshooting .................................................................................................................................... 24
Appendix ....................................................................................................................................................... 25
List 1 Material List (Electronic Section 400-470MHz) ............................................................................................. 25
List 2 Material List (Electronic Section 136-174MHz) ............................................................................................. 35
List 3 Material List (structure material) .................................................................................................................... 46
Figure 1 TP620 Main Board Top Side PCB View(400-470MHz) ............................................................................ 48
Figure 2 TP620 Main Board Bottom Side PCB View(400-470MHz) ....................................................................... 48
Figure 3 TP620 Main Board Top Side PCB View(136-174MHz) ............................................................................ 49
Figure 4 TP620 Main Board Bottom Side PCB View(136-174MHz) ....................................................................... 49
Figure 5 TP620 Mainboard Schematic Diagram(400-470MHz) ............................................................................. 50
Figure 6 TP620 Mainboard Schematic Diagram(134-174MHz) ............................................................................. 56
I
TP620 Service Manual
1. Overview
1.1. Scope
This manual applies to the serv ice and mainte nan ce of TP620 digital portable radios, and it is intended for
use only by engineers and professional technicians trained by Kirisun. Data changes in this manual may
occur with the improvement of technology. To get the latest technology information, please contact us or
your local dealer .
Please read this manual before repairing the radio.
1.2. Safety Precaution
Electromagnetic Radiation
Radios generate and radiate electromagnetic energy. The security design of TP620 radio’s
electromagnetic radiatio n on human meet s nat iona l and intern ation al st andar ds . To ensure radio’s optimal
performance and safe electromagnetic radiation on human, please keep the radio vertical to the ground
and 2-5 cm away from your mouth.
Electromagnetic Interference
To avoid electromagnetic interference, please turn off the radio wherever there are clear warnings, e.g.
hospitals, health car e centers, airports, wher e radios must be turned of f.
Explosive and Harmful Gases
The radio should be turned off in area s wit h explosiv es and har mful gases, e.g. lower deck of the hull, fuel
and chemical storage fac ilities, ar ea where the air contains chemicals, particles, dust or m etal dust.
Please turn off the radio when close to blasting area and e lect r i c blasting detonators.
Replacing or charging batt er ies in pot entially explosive atmospher e i s pr ohibited.
Antenna Damage
Do not use radios when the antenna is damaged. Damaged antenna may cause mild burning to human
skin.
Replacing Components
When replacing components, please be aware of the mo del. Do not arbitrarily replace any components
that do not match Kirisun’s requirement.
Page 1 of 61
TP620 Service Manual
2. Introduction
2.1. External Views and Functional Keys
No. Part Name No Part Name
1 LED Indicator 2 Power/Volume Switch
3 Channel Switch 4 PTT(Push-To-Talk)
5 Side Key 1(Programmabl e Key) 6 Side Key 2(Programmable Key)
7 Top Key (Programmable Key) 8 Speaker/Microphone Interface
2.2. LED Indicator
• The LED glows red: The radio is transmitting.
• The LED glows green: The r adio is receiv ing (v oice mail, mess age, dat a) or activit ies on the cha nnel are
detected.
• The LED flashes red: Low bat t er y.
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TP620 Service Manual
ANT
LPF
RF AMP
Q505
MCF
IF AMP
Q507
GT3136
450K
AF AMPAF PA
SPK
D501 D503
D504
XF501
49.95MHz
U102 NJM2902
IC101 TDA8547
TX/RX
SW
BPF
BPF
MIXER
CF501 450H
16.8MHz
TCXO
16.8MHz
To 50.4MHz
Q605
X601
Q509
450_IF AMP
CODEC
U201
HR_C5000
Q506 3SK318
PLL
2SK72310
Loop
Filter
TX VCO
RX VCO
Buffer
PA
Pre-driver
PA
driver
PA
Final
Q504 2SC3356 Q503 2SC3356 Q502 RD01 Q501 RD07
MIC
AF
AMP
CODEC
MOD_I
MOD_Q
U103
NJM2100
ANT
LPF
D
501 D503
D504
TX/RX
SW
16.8MHz
TCXO
X601
U201
HR_C5000
PLL
2SK72310
Loop
Filter
TX VCO
Buffer
PA
Pre-driver
PA
driver
PA
Final
Q504 2SC3356 Q503 2SC3356 Q502 RD01 Q501 RD07
MIC
AF
AMP
CODEC
MOD_I
MOD_Q
U103
NJM2100
BATT+
APC
APC
U502
3. Circuit Description
3.1. Tx/R x Signal Procedure
Figure 3-1 RF Schematic Diagram
3.1.1. Tx Circuit
Figure 3-2 Tx Circ uit Dia g r am
Tx circuit mainly includes four parts below:
• RF Power Amplifier Circuit
The carrier signal generated by VCO will be modulated and preliminarily amplified before entering Tx
circuit. The signal will first pass through a Π-type pure resistance attenuator R536 R537 R538 to realize
the level isolation between the power amplifier circuit and Tx VCO. Then the modulation signal enters the
firs t pre-drive amplifier (Q504) for preliminary amplification, which generates a certain isolation between
the first and second amplifier; The amplified signal will then enter the next pre- drive am plifi er (Q5 03 and
drive amplifier (Q502 RD01)) for further power amplification so as to ensure that enough drive power
Page 3 of 61
TP620 Service Manual
ANT
LPF
RF AMP
Q505
MCF
IF AMP
Q507
GT3136
450K
AF AMPAF PA
SPK
D501 D503
D504
XF501
49.95MHz
U102 NJM2902
IC101 TDA8547
TX/RX
SW
BPF
BPF
MIXER
CF501 450H
16.8MHz
TCXO
16.8MHz
To 50.4MHz
Q605
Q509
450_IF AMP
CODEC
Q506
3SK318
PLL
2SK72310
Loop
Filter
RX VCO
U201
HR_C5000
U301
STM32F
300Hz
LPF
U101
CTCSS/DCS
signal can be offered to the last power amplifier (Q501 RD07) for final power amplification. After being
processed by a set of ampli f iers at several levels, the Tx si gnal will complete the output im pedance match
through a microstrip line at the output terminal of the last power amplifier, through which the output power
loss caused by impedance mismatch can be av oi ded. The Tx signal will then pass the Rx/Tx switcher and
enter the LPF.
• Low Pass Filter Circuit for Harmonic Suppression
Low pass filter which suppresses harmonic wave is a high level low pass filter consisting of capacitor and
inductor with concentrated parameters. The out-of-band harmonic wave and spurious signal can be
further suppressed on the condition that the certain in-band fluctuation is satisfied throu gh this filter.
• Auto Power Control Circuit ( APC)
The drain current from the drive power amplifier and end-level power amplifier passes the sampling
resistors (R559 R560 R561) and the subtraction circuit which consists of the first operational amplifier to
realize the transformation from current to voltage. The voltage will be compared with the PAC control
voltage value output from DAC (U3 01 pin 29) at the secon d operat iona l ampli fier, and the output deviat io n
voltage will change the Tx power strength by controlling the grid bias voltage of power amplifier
tube(including drive lev el and end level).
• Audio Processing
The microphone converts the speech signal to speech electric signal, and the signal will be amplified by
U103 before being input in to ADC of codec ( U201 HR_C5000) for sampling, it will then be output into DSP
after audio being digitally processed, and sent to DAC for modulation signal conversion, the modulation
signal will be separate d into path I and Q for modulat ing V CO , TCXO.
3.1.2. Rx Circuit
Figure 3-3 Rx Circuit Diagram
Rx circuit mainly includes:
RF band-pass filter, low noise amplifier, frequency mixer, IF filter, IF amplifier, IF processor and audio
circuit.
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TP620 Service Manual
• Rx Circuit RF Part
The high frequency signal from low-pass filter passes the front stage electrically tunable band-pass filter
controlled by electric lev el and outp ut by DA C (U301 PIN29) so as to filter out the out-of-band i nterfer en ce
signal, sending ef fec tive b and-p ass signa l into the low noise amplifier (Q505) . The amplified signa l p ass es
again the band-pass filter controlled by electric level and output by DAC so as to filter out the out-of-band
interference signal caused by amplification, sending effective high frequency signal into freque ncy mixer
(Q506).
The effective signal passes RF band-pass filter and low noise amplification and enters the frequency
mixer Q506, meanwhile, the first local oscillation generated by VCO passes the low-pass filter and enters
Q506 for making frequency difference with effective signal so as to generate the first IF signal. The signal
passes th e frequenc y selector network which consists of LC; it further suppresses the other carrier waves
other than the first IF, and increases the isolation between the frequency mixer and IF filter. The IF signal
will be filtered by the XF501 crystal filter, and then sent to the first IF amplifier (Q507) f or amplific ation
before being sent to the IC for IF processing (U501, GT3136).
The third harmonic frequency 50.4MHz produced by TCXO(X601 16.8MHz) is amplified by frequency
selector and become the second local oscillation signal source. The second local oscillation (50.4MHz)
mixes with the first IF signal in U501, generat in g t he s econd I F ( 450kHz). The second IF will be amplified,
limiting am plitud e inside U 501, and filter ed by the ceram ic filter CF50 1 450 kHz before going back to U501
for demodulating and outputting the audio signal.
• Rx Circuit Audio Section
A. Digital Channel Audio Access: The seco nd I F signal output from the eleventh pin of U501 is amplified
by Q509 and sent to U201 for ADC sampling and be ing conv ert ed to dig it al sig nal; af ter the digital audio
signal is compressed, decompressed and decoded by U301, U201 will complete DA conversion and
output audio signal from the 10th pin, and the audio signal will be amplified by U203 and sent to the
audio power amplifier IC101.
B. Analog Channel Audio Access: The audio signal output from the 9th p in of U501 is amplified by U102
and its unit circuit. The high frequency and low frequency will be removed from the audio signal,
keeping only the voice compone nt between 300 Hz to3000 Hz . The v oice compone nt will be ad juste d by
volume potentiometer and sent to audio power amplifier IC101.
C. Analog Channel CTCSS/DCS Signaling Access: The audio signal output from the 9th pin of U501
may include CTCSS/DCS signal. The 300Hz low-pass filter circuit composed of U101 filters out the
signals out of the CTCSS/DCS spectru m. After CTCSS/DCS is amplified, it will be sent to the 25th pin of
U301.
D. Analog Channel Squelch Circuit: The modulated output from U501 is sent to the frequency selector
noise amplifier which is compos ed of U501 inter nal noise a mplifier and C555, R525, R524, C554, C553,
R527; the noise will be selected from the modulation signal and detected internally before being
outputting by the 14th pin and transformed as direct electric level to reach MCU U301; MCU identifies
the electric level strength and controls squelch.
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TP620 Service Manual
16.
8
MHz
TCXO
U
601
2SK
72310
LPF
X
601
Loop
Filter
TX VCO
RX VCO
LD
CS
DATA
PS
MOD
_Q
MOD_
I
RF
3.1.3. Frequency Synthesizer Circuit
Figure 3-4 Frequency Sy nthesizer Circuit Diagram
Frequency synthesizer circuit is composed of VCO and PLL, and it is the kernel module of the whole TRx
system. When transmitting, the circuit supplies accurate carrier frequency; when receiving, it supplies
stable local oscillati on signal. The circuit dire ct ly influences some of the important functions in the system.
• PLL Wor k i ng Principle
The 16.8MHz frequency generated by the reference crystal oscillator enters the frequency divider of PLL
chip, and becomes reference fre que ncy (i.e. step freque ncy f1). The frequency generat ed by VCO passes
LPF for filtering out the second harmonic wave and enters PLL chip for frequency division and gets
frequency f2. The frequency f2 compares with f1 on phase difference in phase comparator, producing
continuous pulse current. When the pulse current passes the loop filter, it starts to accumulate RC and
converts to CV voltage. The CV voltage is sent to the VCO varactor, directly controlling and adjusting the
VCO output frequency until CV becomes constant. PLL will be currently locked, and the stable frequency
output from VCO pass es t wo buffer amplifiers befor e ent er ing the TRx access.
• The Working Principle of Voltage Controlled Oscillator
The voltage controlled oscillator applies oscillation mode of three point capacitor. It changes the control
voltage of varactor to get different output frequency. Rx VCO is composed of oscillator circuit and Q603.
Tx VCO is composed of osci llat or c ircuit and Q601, supplying carrier w ave of TX signal.
Page 6 of 61
TP620 Service Manual
Battery
SW401
POW_DET
POW_HOLD
RF PA
AF PA
U404
LDO
U403
LDO
U402
LDO
U401
DC-DC
5C
5R
5T
3.3V
Q401
Q402
U301
STM32F
SAVE
5RC
5TC
3.2. Power Section
Figure 3-5 Power Structure Diagram
This radio applies 7.4V, 2000mAh lithium battery, RF power amplification (Q501, Q502), AF power
amplification (IC101), and direct battery power supply.
The power circuit is composed of power-on/off circuit, 5C, 5R, 5T, and 3.3V DC-DC volta ge stabilizing
circuit.
Power-on Circuit: When SW 401 is closed, the B level of Q402 becomes high electrical level, and the
switch tube Q401 becomes conductive. The power supplies electricity for every power module through
Q401, when MCU is powered on, POW_HOLD will output high electric level to keep Q401 constantly
conductive so as to turn on t he r adio.
Power-off Circuit: When SW401 is cut off, POW_DET test pin becomes low electric level, and
POW_HOLD pin of MCU will first st ays on high e lectric level for a w hile before out putting low elect ric level .
The Q402 B level thus becomes low electric level, cutting off the switch tube Q401 and the power to turn
off the radio.
5C voltage stabilizing circuit: U404 applies 5V LDO voltage stabilizer and supply 5v power for PLL circuit.
Meanwhile, the 67th pin of U301 outputs high and low electric level to control the enable pin of U404,
making the voltage stabilizer switches between 5V and 0V so as to realize the functions such as energy
saving and Tx/Rx switch.
5R voltage stabilizing circuit: U403 applies 5V LDO volt age sta bilizer, and sup plies 5V power for Rx circ uit.
Meanwhile, the 66th pin of U301 outputs high and low electric level to control the enable pin of U403,
making the voltage stabilizer switches between 5V and 0V so as to realize the functions such as energy
saving and Tx/Rx switch.
5T volt age st abil izing c ircuit : U402 applies 5V LDO voltage st abiliz er, and supplies 5V pow er for Tx c ircuit.
Meanwhile, the 34th pin of U301 outputs high and low electric level to control the enable pin of U402,
Page 7 of 61
TP620 Service Manual
making the voltage stabilizer switches between 5V and 0V so as to realize the functions such as energy
saving and Tx/Rx switch.
voltage stabilizing circuit:U401 applies 3.3V DC-DC voltage stabilizer, and supplies 3.3V power for
U201,U301,U302,U307.
4. Function Description and Parameter Settings
4.1. Conventional Functions
• Supports private ca ll, group call, all call on digita l mode.
• Supports end-to-end voic e encr yption, data encryption.
• Supports short message.
• Supports Stun, Activate, and Digital Signaling Monitor in DMR sta ndard.
• Supports CTCSS/CDCSS on analog mode
• Supports DTMF sy st em o n analog mode
• Supports emergen cy alarm feature
• Supports digit al c hannel scanning, analog channel s c anning.
• Supports a maximum of 3 2 c hannels
• Supports a maximum of two zones, and each zone cont ains16 channels.
• Supports a maximum of 1 000 c ontacts.
• Supports LED, and aler t tone which indicates option
• Supports progra m ma bl e selection between 12.5 kHz and 25 kHz channel spacing.
• Battery power indication a nd low power alert feature.
4.2. Function Parameter Settings
The radios are set with default value when t hey are o ut of the factory. But due t o the dif ferent require ment s
by the users, the rad io ma y be reset with operational frequency, channel para meter, scanning, encryption,
etc. Therefore, Kirisun specially designs a user programmable software which is interface-friendly,
operation-easily and display -visually to complete the parameter settings for the radio.
• Steps for parameter setti ngs are as below:
Step 1. Confirm that t he right v ersion o f TP620 user pr ogram mable soft ware is inst alled on the computer.
Step 2. Confirm that t he r ight version of TP620 USB driver soft w ar e is installed on the computer.
Step 3. Use TP620 programmable lead supplied by Kir isun t o connect t he rad io with c omputer US B port.
Step 4. Confirm that t he r adio is powered on.
Step 5. Operate TP620 u ser programming software.
Page 8 of 61
TP620 Service Manual
• Steps for installing TP620 user programma bl e software are as bel ow:
Step 1. Double click the installation file, and the interface in Figure 4-1 will pop up.
Figure 4-1
Step 2. Click “Next” to enter the next interface for s electing software installation path.
Step 3. As shown in figure 4-2, the user can click “Browse” t o select t he software installat io n path or the
default installation path. Click “Next” to ent er t he installation confirmation interface.
Figure 4-2
Page 9 of 61
TP620 Service Manual
Step 4. Click “Next” to ent er t he installation completion int erface.
Figure 4-3
Step 5. Click “Finish” t o com plete the software inst al lation.
Figure 4-4
Page 10 of 61
TP620 Service Manual
Step 6. After the installation, double clic k TP620 user programmable software. (See figure 4-5)
Figure 4-5
The user can read the current parameter settings from the radio through TP620 user programmable
software, and the p ara met er con figurat ion ca n als o be m odified b efor e writ ing the p ar a meters i nto the
radio.
Please refer to the help file attached along with the software for detailed operation instructions of
TP620 user programmab l e s oftware.
Note:
1. Wrong parameter settings may cause malfunction. Normally, rewriting the correct para meter s et t i ngs
can solve the problem.
2. Before rew r iting the parameter settings, r eading the parameter set t ings out of the radio for back-up is
strongly recommended i n case t hat the recovery is needed once the radio becomes faulty.
5. Assemble and Disassemble Instructions
This radio is sophisticated communication equipment with compact, precise mechanism. Please be
careful during attaching and detaching.
The attaching and detaching instructions are as below:
5.1. Attaching and Detaching the Battery
Attaching the battery
Press the belt clip and push the battery pack forwards in the arrow direction until a click is heard, which
indicates that the battery pack is properly fixed. (see figure 5-1)
Page 11 of 61
TP620 Service Manual
Figure 5-1
Detaching the battery
When detaching the battery, press the latch downwards in the direction ①, and use other hand to push
the battery in the direction ② until it is removed from the radio.
Figure 5-2
5.2. Attaching the antenna
Hold the antenna base, turn the antenna clockwise into the interface on the radio top until it is fastened.
(see figure 5-3)
Figure 5-3
Page 12 of 61
TP620 Service Manual
5.3. Attaching the Speaker /Microphone
Open the microphone cover board and plug the speaker or microphone into the corresponding interface.
（See figure 5-4）
Figure 5-4
5.4. Attaching the Belt Clip
Step 1. Press the belt clip and align the two screw holes with those on the back aluminum shell. (See
figure 5-5)
Step 2. Fasten the tw o s cr ew s.
Figure 5-5
5.5. Separating the Shell from the Chassis
Step 1. Detach t he ant enna. (See figure5-6 and 5-7)
Step 2. Remove the t wo knobs.
Page 13 of 61
TP620 Service Manual
Step 3. Remove the t hr ee nuts which fix the antenna con nector and switch.
Step 4. Rotate loose the screws on both sides of the she l l a nd the two screws which fix the alum in um
shell.
Step 5. Use a tool to pry up t he aluminum shell and push it backwards to separate the shell from the
chassis.
Figure 5-6 Fig ur e 5-7
5.6. Separating the Aluminum Shell from the Main Board
Step 1. Remove 11 screws. (See figure 5-8)
Step 2. Use an electric al soldering iron to solder off the antenna and remove the main board.
Figure 5-8
After the detachment above, the maintenance and modulation can be done accordingly.
Page 14 of 61
TP620 Service Manual
21 22
23
24 25
26
27
28 29 30
18
17
16
15
14
13
12
11
20
10 03 09 08 06 03 05 04 03
01
31
32
35
34
33
02
19
1920
07
No.
Part No.
Part Name
Specification
Quantity
waterproof ring
60 degrees,pb-free
PC+ABS, black,red text ur e
5.7. Exploded View
1 7MHR-7069-04A-W0
2 7MHR-7069-05A-W3
7SMF-020040M-SZYB
3
-N
4 7MHP-7069-02A-W0 PT7800 top cover
5 3CR7-SMA-50JFB-4 RF coaxial connector
6 7MHR-7210-02A-W0
7 TP620 mainboard 1
8 TP660 PTT board 1
9 7MHS-7069-04A-W PT7800 PTT button
10 7MHP-7210-04A-W0
PT7800 major
waterproof ring
PT7800 roof
Machine screw
/M2.0*4.0
PT567 top waterproof
pad
PT567volume knob
Silicone gel (highly-elastic),
black, hardness 40
degrees,pb-free
Silicone gel, orange, hardness
Hardened
iron,Φ2mm*4mm,cross flat
nickel plated threading
machine,Nylok Processing
2008B ,pb-free
SMA-J, flange plate installation
(558, hole distance 14 m m , c hip
length:10.5mm)
Silicone gel, black, hardne ss 60
degrees,pb-free
METAL DOME, pb-free,3 D6
square dome
ABS, black,pb-free,texture 1
1
1
15
1
1
1
1
Page 15 of 61
TP620 Service Manual
11
7MHP-7210-03A-W0
PT567 channel knob
ABS, black,pb-free,texture
1
passivation
processing
15
7MHP-7069-10A-WC
PT7800 guide beam
PC, transparent,pb -free
1
PT7800 PTT side
PC+ABS, black,
board
adhesive speaker net
nitto57120B, with 2 notches
PC+ABS,embedded latch
PT7200 head set,
earphone set
12 7MHS-1140-01A-W 3208 knob calori fic Spring steel 2
Brass,internal diameter M6mm,
7NRC-060100035-B1
13
A
Switch nut
external diameterφ10mm,
thickness 3.5mm, black
2
internal diameter M9mm,
14 7NRC-090110025-W1 Antenna nut
external diameterφ11mm,
thickness 2.5mm, no surface
1
16 7MHR-7210-01A-W3 PT567alarm button
17 7MHP-7069-03A-W0
18 7MHP-7069-04A-W0
7SMF-025080M-SZYB
19
-Z1
cover
PT7800 PTT cover
M2.5X8 cross flat
head thread machine
screw
Silica gel, orange, hardness 60
degrees,pb-free
2008B/2010B,pb-free
PC+ABS, black, 2010B,pb-free 1
Hardened iron,Φ2.5mm*8mm,
metric coarse thread
1
1
2
20 7MHR-7069-08A-W0 O ring D2.4X1.0MM pb-free 2
21 7MHR-7069-02C-W0 PT7800 PTT button
Silica gel,black, hardnes s 60
degrees,1409 modified, pb-free
1
22 7MHP-7210-01A-W0 PT567 front shell PC+ABS, black,pb-free,texture 1
23 7GCJ-S7210-01-J
PT567double-sided
24 4SS7-4005-016-100C 40 speaker
25 7MHP-7069-06A-W0 PT7800 battery latch
Non-woven cloth, gum
11.3.25 modified technique,Φ40,
impedance 16Ω,1W,pb-free
baffle,black,2008B,pb-free
1
1
1
Spring steel, nickel-plated, wire
26 7MHS-1010-02A-N PT3208S spring
diameter 0.2, diameter 2, hei ght
2
9.5,11 circles
27 7GCJ-S1867-01
28 6SS2-7210-HLA
29 7MHP-7210-02A-W0
7SSF-030040M-YXHP
30
-BA
31 7GCB-070045005-J PT567Φ7 Diameter φ7*φ4.5* thickness 1
PCB sticker
PT567rail radio
PT567earphone
cover board
M3*4 screw
Double-sided tape 1
1
PC+ABS, black,textur ing,pb-free 1
Earphone cover board scr ew,
SUS303, US made＃4-40
thread, IP black vacu um plating,
1
pb-free
Page 16 of 61
TP620 Service Manual
microphone cloth
0.1mm, one side glue
bracket
ground, polish,pb-free
board
Tx frequency
MHz）
Low
Intermediate/low
Intermediate
Intermediate/high
high
MHz）
MHz）
32 7MHR-1727-09A-W3 558 microphone case
33 7MHL-7069-01A-W
PT7800 aluminum
Silicone gel, hardness 40
degrees,orange, no surface
process
Aluminum alloy (ADC12),
1
1
7SMF-020080M-MHH
34
T-N1
35 7MHF-7069-02A-W
M2*8 club size
thick-headed machine
screw
PT7800 roof cover
Hardened
iron,Φ2mm*8mm,metric coarse
thread, Nylokprocess ing
0.5MM,SUS304,pb-free 1
2
6. Adjustment and Test
During the maintenance, it is necessary to test and adjust the radio’s technical parameters after c hanging
components.
6.1. Com ponent s for A djustme nt
(1) Antenna connector converter
(2) Universal connector
6.2. Adjustment Test Method
6.2.1. Frequenc y Description
Model TP620(400-470)
Channel
（MHz）
Rx frequency
（
Model TP620(134-176)
Channel
Tx frequency
（
Rx frequency
（
Low
frequency
400.025 417.025 435.025 452.025 469.975
400.25 417.25 435.25 452.25 469.95
frequency
136.025 145.025 155.025 162.025 173.975
136.25 145.25 155.25 162.25 173.95
Intermediate/low
frequency
frequency
Intermediate
frequency
frequency1
Intermediate/high
frequency
frequency
high
frequency
frequency
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