Kirisun PT568-01 User manual

PT568 Service Manual
1
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 higher than 20 dBm (100mW).
Do not turn on the radio before the antenna or load connection
is completed.
If the antenna has been damaged, do not use the radio.
Damaged antenna may cause light 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
KSP568 software.
Unauthorized Duplication of KSP568 software is strictly
prohibited.
Kirisun Electronics (Shenzhen) Co., Ltd owns the copyright of
the MCU software code.
Kirisun Electronics (Shenzhen) Co., Ltd owns the copyright of
the radio outward appearance/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”, “ ”, “ ”, and “科立讯”.
Content
Chapter 1 Overview ................................................................... 2
Chapter 2 External View and Functional Keys........................... 2
Chapter 3 Circuit Description..................................................... 3
Chapter 4 Mode Introduction ..................................................... 8
Chapter 5 Disassembly for Repair............................................ 11
Chapter 6 Adjustment............................................................... 12
Chapter 7 Specifications........................................................... 15
Chapter 8 Troubleshooting ....................................................... 15
Chapter 9 KBC-70Q Charger ................................................... 17
Appendix 1 Abbreviations........................................................ 18
Appendix 2 Electronic Parts List.............................................. 18
Appendix 3 Structural Parts List .............................................. 22
Appendix 4 Accessories ........................................................... 23
Figure 1 PT568 Block Diagram................................................ 24
Figure 2 PT568 Schematic Circuit Diagram............................. 25
Figure 3 PT568 Top Layer Position Mark Diagram ................. 26
Figure 4 PT568 Bottom Layer Position Mark Diagram ........... 27
Figure 5 PT568 Top Layer Position Value Diagram................. 28
Figure 6 PT568 Bottom Layer Position Value Diagram ........... 29

PT568 Service Manual
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Chapter 1 Overview
1.1 Introduction
This manual applies to the service and maintenance of PT568
series of FM portable radios, and is intended for use by engineers
and professional technicians that have been trained by Kirisun. It
contains all required service information for the equipment.
Kirisun reserves the right to modify the product structure and
specifications without notice in order to improve product
performance and quality. You can also log on our website
www.kirisun.com to download the latest service manual or contact
your local dealer or us.
Please read this manual carefully before repairing the product.
1.2 Service Attentions
* Safety
Do not touch the antenna connector or the PCB while
repairing the radio.
Do not reverse the battery polarity.
It may cause harm to the radio if signal input on the antenna
connector is higher than 20 dBm (100mW).
Do not turn on the radio before the antenna or load connection
is completed.
If the antenna has been damaged, do not use the radio.
Damaged antenna may cause light burning on skin.
* Electromagnetic Interference
It’s prohibited to use or repair the radio in the following
places:
Hospital, health center, airport
Any area with a potentially explosive atmosphere (e.g. orlop
deck of the ship, storage or transportation equipment for fuel and
chemical etc.)
Any place near blasting sites or area with electrical blasting
cap.
It’s recommended to avoid using or repairing the radio in the
following place:
It’s recommended to avoid using radios in a car that is moving
as the radio wave might interfere the auto engine and cause it to
stop working.
* Replacement Parts
All components used for repair should be supplied by Kirisun.
Components of the same type available on the market are not
surely able to be used in this product and we do not guarantee the
quality of the product using such components.
If you want to apply for any component from Kirisun, please
fill in an application form as below.
e.g.
Component Application Form
Radio
Model Component Position Mark
Model/
Specifications Part No. Qty
PT568-01 FET Q11 2SK3476 105-SK3476-R01 1
PT568-02 Triode Q57 2SC5108(Y) 104-SC5108-001 1
1.3 Service
All the Kirisun products are subject to the service warranty.
The main unit of the radio is guaranteed for free service of 12
months. Accessories (such as battery pack, antenna, charger and
power adapter etc.) are guaranteed for free service of 6 months.
However, in one of the following cases, charge free service will be
not available.
* No valid warranty card or original invoice.
* Malfunction caused by disassembling, repairing or
reconstructing the radio by the users without permission.
* Wear and tear or any man-made damage such as mechanical
damage, burning or water leaking.
* Product’s serial number has been damaged or the product
trademark is difficult to identify.
After the warranty expires, lifetime service is still available.
We also provide service components to service stations and staffs.
Chapter 2 External View and Functional Keys
2.1 External View
2.2 Functional Keys
①LED Indicator
Lights red while transmitting; lights green while receiving;
flashes red when the radio is in low power.
② Channel Selector Knob

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Rotate the knob to select channel 1-16.
③On/Off/Volume Control Knob
Turn clockwise until you hear a click to turn the radio power
on. Turn counterclockwise until you hear a click to turn it off.
Rotate it to adjust the volume after turning on the radio.
④PTT (Push-To-Talk) Button
Press and hold the PTT button and speak into the microphone,
your voice can be sent to the recipient. Release the PTT button to
receive.
⑤Side Button 1 (programmable button)
⑥Side Button 2 (programmable button)
⑦Top Button (programmable button)
⑧External Speaker/Microphone Jack Cover
Remove the cover; you will see the external
speaker/microphone jack. External speaker/microphone can be
connected to the radio through this jack.
Chapter 3 Circuit Description
3.1 Frequency Configuration
RF
AMP
5T
TX/R X SW
5T5R
RF
AMP
5C
BUFFERRXVCO
TXVCO
MODE
RIPPLE
FILTER 5C
BUFFER
PLL IC
DATA FR OM MCU
CLK F ROM MCU
LE FR OM MCU
PS FR OMMCU
LOCK TO MC U
TCXO
12.8MHz
QT/DQT FROM MCU
CENTER FR EQUENCY A DJUST F ROM MCU
5C
5C
MIXER
5R
IF
AMP
5R
5C
12.8MHz TO
51.2MHz DET COLL
51.65MHz
+/-15KHz
+/-7.5KHz
450KHz
NOISE
AMP TA31136NOISE DETB USY S IGNEL TO MCU
5R
Figure 3.1 Frequency Configuration
The reference frequency of the frequency synthesizer is
provided by crystal oscillator X4 (TCXO, 12.8MHz). The receiver
adopts double mixing. The first IF is 51.65MHz and the second IF
is 450kHz. The first local oscillator signal of the receiver is
generated by the frequency synthesizer. The second local
oscillator signal adopts the fourth harmonics (51.2MHz) of the
crystal oscillator X4 (TCXO, 12.8MHz). Transmitter signal is
directly produced by the frequency synthesizer.
3.2 Principle of Receiver (RX)
Figure 3.2 Principle of Receiver
Front end
The signal coming from the antenna passes through the
RX/TX switch circuit (D1, D2, D4 and D5), and passes through a
BPF comprises of C37, C227, L8, L15, C70, C126, D30, C218,
L9, C230, C128, D26, C217, L10, C229, C127 and D24 to
remove unwanted out-of-band signal, and is sent to the low noise
amplifier (LNA) consists of Q20 and its peripheral components to
be amplified.
Output signal from the LNA passes through a BPF comprises
of L7, C228, C47, D23, C219, L6, C182, C124, D22, C216, L5,
C132, C32 and D21 and goes to the first mixer (Q19).
PWM wave is output from pin 12 of the MCU. The wave is
filtered and rectified into adjustable voltage, which can control the
center frequency of the band pass filter through changing capacity
of the varactor diodes (D21, D22, D23, D24, D26 and D30).
First mixer
The received signal from LNA is mixed with the first local
oscillator signal from the frequency synthesizer to produce the
first IF signal (51.65MHz). Then the first IF signal passes through
crystal filter (XF1 and XF2) to remove the adjacent channel signal
and signal outside the adjacent channel.
IF circuit
The first IF signal from the crystal filter is amplified by the
first IF amplifier (Q21), and is sent to the IF processing IC (IC5,
TA31136).
IF IC consists of second mixer, second local oscillator, IF
amplifier, limiter, discriminator, and noise amplifier.
The 12.8MHz frequency produced by TCXO (X4) is
multiple-amplified and then the fourth harmonics (51.2MHz) is
adopted as the second local oscillator signal source. The second
local oscillator signal (51. 2MHz) is mixed with the first IF signal
(51.65MHz) in IC5 to generate the second IF (450kHz). And then
the second IF signal is amplified and limited in IC5, filtered by the
ceramic filter (CF1, 450kHz), and demodulated in IC5 to output
audio signal.
Figure 3.3 IF System

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Audio signal processing
The voice signal processing circuit of the receiver consists of
IC6 and its peripheral circuits. After being amplified in IC6-C,
voice signal from IC5 is sent to IC4 (CTCSS signal filtering
circuit) and IC6-D respectively. The signal is then amplified,
deemphasized and filtered by other units of IC6 to remove HF and
LF components contained in the audio frequency, with only voice
components within 300~3000Hz left. The resulting signal is then
sent to Q9 for amplification. The amplified signal is adjusted by
the volume potentiometer and then is sent to the audio power
amplifier (IC8).
Figure 3.4 Audio Processing of Receiver
Squelch circuit
The demodulated signal from IC5 goes to the selective noise
amplifier consists of internal noise amplifier of IC5, C211, R99,
R100, C107 and R94 to remove the noise component. The
resulting signal is then amplified by Q7 and demodulated by D17
and is sent to the MCU. MCU identifies level of the noise and
controls the squelch.
Audio power amplifier
The audio power amplifier circuit consists of IC8 and its
peripheral components.
The received audio signal, voice alert signal, alert tone signal
and warning tone signal are collected and pass through the audio
amplifier where they are amplified and output to drive the speaker.
The volume of the warning tone is not controlled by the preset
volume level of the radio.
When AFCO is in high level, Q35 turns on, IC8 starts to
operate, and the speaker makes sound. Speaker impedance: 16.
Q38: Receiving audio signal switch
Q51: Warning tone switch
Q25: Alert tone switch
CTCSS/DCS signal filtering
Audio signal demodulated by IC5 may contain CTCSS
(Continuous Tone Control Squelch System) or DCS (Digital Code
Squelch) signal. The spectrum components of CTCSS/DCS are
within 2-250Hz. The filtering circuit consists of IC4 can remove
signals outside the CTCSS/DCS spectrum, which enables the
MCU to decode CTCSS/DCS more accurately.
3.3 Principle of Transmitter (TX)
TX power amplification
Figure 3.5 Principle of Power Amplifier and Antenna Switch
The modulated RF signal from VCO is amplified by Q2, Q3
and Q12, and is sent to Q11 for power amplification.
Grid bias of Q11 and Q12 is controlled by the APC circuit.
Through changing the grid bias voltage, the Tx output power can
be controlled conveniently.
APC (Automatic Power Control)
Figure 3.6 APC Circuit
R167, R168 and R169 are used to test the power amplification
current. IC3A is the sampling amplifier for the power
amplification current. IC3B is the power comparator amplifier.
If the Tx output power is too high, the power amplification
current and IC3A output will increase; IC3B output voltage will
decrease, so the bias voltage of Q11 and Q12 will also decrease,
which causes the Tx output power to be lowered, and vice versa.
Thus the Tx output power can keep stable under different working
conditions.
MCU can set the power through changing the voltage input to
IC3B.
Tx voice signal processing
TCXO
VCO
MCU
CTCSS/DCS
MIC
MIC Amp Pre-Emphasis
IC7A IC7B
IC7C,IC7D
Figure 3.7 Transmitter Audio Circuit

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The Tx voice signal processing circuit consists of IC7 and its
peripheral components. After being amplified, limited and filtered,
the voice signal from MIC is sent to VCO for modulation together
with CTCSS/DCS signal.
The AGC circuit consists of D13, D308 and Q24. When signal
from MIC is too large, the AGC circuit will lower the signal
strength to make sure that no distortion happens to the signal.
Q34 is the power switch of the voice processing circuit. It is
controlled by MCU. Power supply of IC7 will be turned on when
the radio is transmitting.
J2 is the jack for external MIC. When using external MIC, the
internal MIC will be turned off automatically. But the internal
PTT is still effective.
3.4 Principle of Frequency Synthesizer
1
Nr
1
N
Control Circuit Charge
UL
Detect
Pump
TCXO
DCS Mod
Freq Adj
to MCU VCCN
Data
CK
LE
to MCU
VCO
RX
TX
D3,D6
Q4
Q5
MOD in
Figure 3.8 Frequency Synthesizer
The radio adopts PLL type frequency synthesizer.
The frequency synthesizer consists of reference oscillator,
voltage control oscillator (VCO), programmable divider, phase
comparator, and low pass filter.
Rx VCO unit consists of Q14, L30, C120, C88, C142, C180,
D8 and D9. Tx VCO unit consists of Q15, L51, C121, C137,
C206, C194, D10 and D11. D12 is the modulation circuit of VCO.
IC1 (MB15E03) is PLL integrated circuit, which consists of
programmable reference divider, programmable swallowing
divider, phase comparator, and charge pump.
The low pass filter consists of R244, C193, R202, R40, C207,
R141, C205, R2 and C204. The reference frequency is provided
by X4 (TCXO, 12.8MHz).
The reference frequency from TCXO (Temperature
Compensated Crystal Oscillator) is divided by the programmable
reference divider in IC1 to produce reference frequency of 5kHz
or 6.25kHz (determined by the preset channel frequency and is
controlled by MCU).
The oscillation frequency from VCO goes to IC1 where it is
divided by the programmable swallowing divider and is then
compared with the reference frequency to obtain error signal. The
signal is then filtered by a low pass filter and is sent to VCO to
change the oscillation frequency of the VCO, enabling the
frequency to reach the set value. Then the VCO is locked.
N=F
VCO/FR
N: Times of frequency division
F
VCO: Oscillation frequency of VCO
F
R: Reference frequency
Unlock detection: When PLL is unlocked, Pin 14 of IC will
output low level signal to MCU. Then MCU prohibits the
transmitter from transmitting and makes an alert tone.
Q6: Power filter, which provides more purified power for PLL
to reduce noise of the frequency synthesizer.
3.5 Voice Alert Circuit
The radio is provided with voice alert function, which is
especially useful at night or in dark environment.
IC15 is a voice memory chip, which is stored with voices of
channel indication etc. Once the channel selector knob is switched,
the speaker will announce the current channel number. You can
press the preprogrammed “Voice Alert” key to repeat the current
channel number.
If voice alert function is enabled, the speaker will announce
the current channel number once the “Voice Alert” key is pressed
under standby mode. You can switch the voice type by pressing
and holding the “Voice Alert” key while restarting the radio. Do it
repeatedly to switch the voice type in the order of “Chinese
Male-English Male-Chinese Female-English Female-No Alert”.
3.6 Power Supply
The radio uses 7.4V, 1700mAh Li battery. The Tx power
amplification circuit (Q11 and Q12) and the Rx audio power
amplifier (IC8) directly adopt the battery for power supply. Power
of other circuits is supplied by 5V regulated voltage.
IC12: 5V low dropout, micro-power regulator, which supplies
5V power with large current for the radio together with Q10 and
Q30.
Q29: 5T switch, which is controlled by MCU.
5T: Supplies power for front end of Tx.
Q31: 5R switch, which is controlled by MCU.
5R: Supplies power for RF amplifier, mixer, IF processing unit,
and audio signal processing unit etc. of the receiver.
Q32: 5C switch, which is controlled by MCU.
5C: 5V power supply under SAVE control. Supplies power for
frequency synthesizer.
3.7 MCU Unit

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EEPROM
D/A
chananl
SW
PTT MONI
ALARM
PF1
CTCSS/DCS IN
SQL BATT VCCN
CTCSS/DCS OUT
BEEP
LE DATA CK
to PLL
VIOCE CHIP
TX/RX CONTROL
RXD TXD
to PC
UL
5TC
5RC
SAVE
APC CONTR
SHIFT
IC9
IC10
MCU
Figure 3.9 Principle of MCU Unit
MCU unit controls the operation of each unit of the radio so
that all functions can be realized.
Communicate with external PC.
Access the status data of the radio.
Control the PLL to generate Rx and Tx local oscillator
frequencies.
Obtain status parameters of current channel.
Control status of LED indicator.
Control power supply for each unit.
Check the actions of each functional key.
Generate CTCSS signal.
Generate DCS signal.
Generate power control signal.
Perform CTCSS decoding.
Perform DCS decoding.
Testandcontrol the squelch.
Control content of voice alert.
Memory (E2PROM, AT24C08):
The memory is stored with channel data, CTCSS/DCS data,
other function setting data, and parameter adjusting data.
CTCSS/DCS signal encoding and decoding:
The CTCSS/DCS signal (output from pin 12) generated by
MCU is filtered by R155, R156, C242 and C243. Then the
resulting signal is divided into two parts and sent to VCO and
TCXO respectively for modulation.
The CTCSS/DCS signal from the receiver is sent to MCU (pin
49) for decoding. MCU checks if the CTCSS/DCS signal in the
received signal matches the preset value of the radio, and
determines whether to open the speaker or not.
Power adjustment:
Output from pin 42 of the MCU passes through integrating
filter (R161, C317, R206, and C318), and is sent to the APC unit
to control the output power of the transmitter.
CTCSS
CTCSS (Continuous Tone Control Squelch System) is a
squelch control system which is modulated on carrier and is
guided by a continuous sub-audio signal. If CTCSS is set, the
communication between the transmitting and receiving radios can
be realized only when the two radios have set the same CTCSS
frequency. In doing this, disturbance from other signals can be
avoided.
PT568 has 39 groups of standard CTCSS frequencies for your
selection. See table 3.1.
The CTCSS signal is generated by MCU, and is passed
through low pass filter consists of RC to remove high frequency
components (above 300Hz). Then the resulting signal is sent to
VCO for modulation.
Table 3.1 CTCSS Frequencies
No. Frequency
[Hz]
No. Frequency
[Hz]
No. Frequency
[Hz]
No. Frequency
[Hz]
1 67.0 11 94.8 21 131.8 31 186.2
2 69.3 12 97.4 22 136.5 32 192.8
3 71.9 13 100.0 23 141.3 33 203.5
4 74.4 14 103.5 24 146.2 34 210.7
5 77.0 15 107.2 25 151.4 35 218.1
6 79.7 16 110.9 26 156.7 36 225.7
7 82.5 17 114.8 27 162.2 37 233.6
8 85.4 18 118.8 28 167.9 38 241.8
9 88.5 19 123.0 29 173.8 39 250.3
10 91.5 20 127.3 30 179.9
DCS
DCS (Digital Code Squelch), which is used to control squelch,
is a series of continuous digital codes modulated on carrier
together with voice signal. If DCS is set, the speaker can be
opened only when the radio receives signal with the same DCS to
avoid disturbance of unwanted signals.
PT568 has 83 standard codes (inverted and non-inverted) for
your selection. See table 3.2.
DCS signal is produced by MCU (in waveform of PWM). It
passes through the low pass filter consists of RC to remove the
high frequency components (above 300Hz). Then the resulting
signal is sent to VCO and TCXO for modulation, with HF
components of the DCS signal being modulated by VCO, and the
LF components of the DCS signal being modulated by TCXO.
The DCS signal coming from the receiver is sent to MCU for
decoding. MCU checks if the DCS code in the received signal
matches the preset DCS of the radio, and determines whether to
open the speaker or not.

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Table 3.2 DCS Codes
023 114 174 315 445 631
025 115 205 331 464 632
026 116 223 343 465 654
031 125 226 346 466 662
032 131 243 351 503 664
043 132 244 364 506 703
047 134 245 365 516 712
051 143 251 371 532 723
054 152 261 411 546 731
065 155 263 412 565 732
071 156 265 413 606 734
072 162 271 423 612 743
073 165 306 431 624 754
074 172 311 432 627
3.8 Semiconductor Data
Refer to table 3.3 for descriptions of each pin.
Table 3.3 Definition of CPU Pins
No. Port name Pin
Name I/O Function
1 NC NC
2 AFCO2 P35 O Audio frequency switch 2
3 GLED P33 O Green LED switch
4 PTT P34 I [PTT] input
5 MODE I
Connect the 4.7K resistor with VCC,
programming test point
6 VDEVC2 P43 O VHF deviation switch 2
7 VDEVC1 P44 O VHF deviation switch 1
8 RST I Reset input, programming test point
9 XOUT O
10 VSS I GND, programming test point
11 XIN I Oscillator (7.3MHz)
12 VCC I 5V CPU power input, programming test point
13 SHIFT P27 O Clock beat shift. H: On
14 VCCN P26 O(PWM) Frequency stability output
15 TO P25 O(PWM) QT/DQT output
16 WNTC P24 O
Wideband/Narrowband control
H: Wideband, L: Narrowband
17 APC P23 O(PWM) TX: Automatic power control output, RX: 0
18 TUNE P22 O(PWM) TX: 0 RX: BPF tuning output
19 BEEP P21 O(PWM) BEEP/DTMF output
20 SDA P20 I/O EEPROM data line
21 ENC0 P17 I Encoder input
22 ENC2 P16 I Encoder input
23 ENC3 P15 I Encoder input
24 ENC1 P14 I Encoder input
25 SCL P13 O EEPROM clock line
26 NC NC
27 UL P45 I
PLL circuit unlock detect pin
H: locked, L: unlocked
28 TXD P66 O RS-232C output, programming test point
29 RXD P67 I RS-232C input, programming test point
30 CK P12 O PLL clock output
31 DT P11 O PLL data output
32 LE P10 O PLL IC enable pin, H: locked
33 RX P31 O Receiving enable
34 BUSY_V P30 O Busy signal of voice annunciation IC
35 DATA_V P65 O Data of voice annunciation IC
36 SCLK_V P64 O Clock of voice annunciation IC
37 RLED P63 O Red LED control, H: On
38 NC P07 I(A/D0)
Connect the pull-up resistor with VCC, and
connect the pull-down resistor with VSS
39 NC NC
40 NC NC
41 TI P06 I(A/D1) QT/DQT signal input
42 BUSY P05 I(A/D2) Busy signal input
43 BATT P04 I(A/D3) Battery voltage detect
44 VREF I Connect with VCC
45 SAVE P60 O
Battery saving control, H: supply power, L:
power saving
46 MUTE P62 O Mute control H: Mic mute L: audio mute
47 5RC P61 O Receiving power control L: On
48 KEYIN P03 I(A/D4) Programmable key P1, P2, P3 detect
49 5TC P02 O Transmitting power control, H: On
50 RLED P01 O Red LED switch
51 AC P00 O
Alarm switch control, H: controlled by volume
switch
Radio should be in low level in emergency
alarm
52 AFCO1 P37 I Audio control switch 1
Table 3.4 Function Description of Semiconductor Components
Position
Mark Model Function Description
IC1 MB15E03 Frequency synthesizer
IC4 NJM2904 APC, voltage comparison, driving
IC5 TA31136 Rx second local oscillation, second IF
amplification, limitation, demodulation, and
noise amplification
IC6 NJM2902 Amplification and filtering of demodulation
signal of receiver.
IC7 NJM2902 MIC amplification, limitation and filtering
IC8 TDA8541 Audio frequency power amplification of receiver
IC9 AT24C08 E2PROM, memorizes channel frequency data,
function setting parameters and adjusting status
parameters
IC10 R5F212A8 MCU
IC11 PST9140NR MCU reset circuit
IC12 HT7150-1 LDO, low-power voltage regulator
IC15 W588A080 Voice storage IC
Q2 2SC5108 First amplification of transmitter
Q3 2SC3356 Second amplification of transmitter
Q4 2SC5108 VCO buffer amplifier
Q5 2SC5108 VCO buffer amplifier
Q6 2SC4617 VCO power supply filter
Q7 2SC4738 Noise amplifier
Q9 2SC4617 Audio frequency signal amplification of receiver
Q10 2SC1623 5V voltage regulation output current stretching
Q11 2SK3476 Transmitter final power amplification
Q12 RD01MUS1 Transmitter power amplification driving
Q17 DTA144EE APC output switch
Q19 3SK318 First mixer
Q20 3SK318 Receiver high power amplifier

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Q21 KTC4082 1st IF Amplifier
Q22 DTC144EE Red LED Driving
Q23 DTC144EE Green LED Driving
Q24 2SK1824 Voice alert switch
Q26 DTC144EE 5C switch
Q29 KTA1298 5T switch
Q30 KTA1298 5V voltage regulation output current stretching
Q31 KTA1298 5R switch
Q32 KTA1298 5C switch
Q34 DTA144EE Power switch of MIC amplification unit
Q35 2SK1824 Receiver audio output switch. Disconnect on
Emergency
Q36 2SK1824 Receiver audio output switch
Table 3.5 Function Description of Diodes
Position
Mark Model Function Description
D1 MA77 Transmitter antenna switch diode
D2 HVC131 Transmitter antenna switch diode
D3 HSC277 VCO output switch
D4 HVC131 Antenna toggle switch
D5 HVC131 Antenna toggle switch
D6 HSC277 VCO output switch
D7 HSC277 5V voltage regulation output current stretching
D8 HVC376B VCO oscillation varactor diode
D9 HVC376B VCO oscillation varactor diode
D12 MA360 VCO modulation diode
D14 HZU5ALL APC output voltage-limiting diode
D15 MA2S111 Unlock detection diode
D16 MA2S111 VCO power filtering acceleration diode
D17 1N4148 Noise demodulation
D18 1N4148 Noise demodulation
D20 Green LED Receiving indicator
D25 MA2S111 APC single diode
D28 Red LED Transmitting indicator
D29 Green LED Receiving indicator
Table 3.6 Features of Crystal Filter XF1, XF2
Item Rated Value
Nominal center frequency 51.65MHz
Pass band width ±7.5kHz or higher
40dB stop band width ±20.0kHz or lower
Pulse within band 1.0dB or lower
Insertion loss 3.0dB or lower
Guarantee attenuation 80dB or higher
Terminal impedance 1.2k
Table 3.7 Features of CF1 LTVPC450EB
Item Rated Value
Nominal center frequency 450kHz
6dB band width ±6kHz or higher
50dB band width ±12.5kHz or lower
Pulse 2.0dB or lower
Insertion loss 6.0dB or lower
Guarantee attenuation 35.0db or higher
Terminal impedance 2.0k
Table 3.8 Schematic Diagram for Packaging of Semiconductor
Devices
3SK318
M: YB-
G1
G2 D
S
G
S
D
CC C
C
B
BB
B
EE
E
E
G
D
S
2SK1824
Mark: B1
2SC5108
M: MC
C
B
E
M: R24
2SC3356
C
B
E
2SC4617
C
B
E
C
B
E
2SC4738 KTC4082
C
B
E
2SC1623
M: L6
KTA1298 DTC144EE
M:16
GND
IN
OUT
HT7150-1
RD01MUS1
D
G
SS
RD07MVS1
RDA0002
1
2
3
DA221
M: K
2SK308NV
DTA144EE
C
B
E
FMMT591
GSD
Chapter 4 Mode Introduction
Mode Introduction
Mode Function How to enter
User Mode For normal use Power ON
Data
Programming
Mode
Used to read and write
frequency data and
other features to and
from the radio
Received commands
from PC.
PC Test Mode Tune the radio
parameters by PC
Received commands
from PC.
PC
Mode
Firmware
Programming
Mode
Upgrade the radio
when new features are
released
Press and hold the top
key for over 2 seconds
while turning the radio
power ON, and received
commands from PC
Wired Clone Mode
Used to transfer
programming data
from one radio to
another
Press and hold side key 1
for over 2 seconds while
turning the radio power
ON
4.1 User Mode
You can enter User Mode (conventional communication mode)
by turning the radio power ON. Under this mode, users can use
the defined functions of the radio.
4.2 Data Programming Mode
The radio has been set before leaving the factory. However,
due to different requirements of users, the radio’s operating
frequencies, channels, CTCSS/DCS, scan, and other functional
parameters should be reprogrammed. Therefore, Kirisun has
specially designed a set of Chinese/English programming software
KSP568 with friendly interface, convenient operation and
visualized display for setting functional parameters of the radio.
Steps for setting the functional parameters of the radio by PC
are as follows:
A. Install KSP568 on the computer.
B. Connect the radio to the serial port of the PC with the
special programming cable (KSPL-09). Refer to the
figure below.

PT568 Service Manual
9
Figure4.1
C. Turn the computer power ON.
D. Turn the radio power ON.
E. Run the KSP568 programming software by double
clicking on its executive program.
F. Click “Program” in the main menu of KSP568, and click
“Read from radio” in the pull-down menu to read
parameters of the radio to the computer; click “Write to
radio” in the pull-down menu to write parameters in the
computer to the radio.
G. The following parameters can be set by using KSP568
according to requirements of the user:
Radio Information:
Radio Model (model/frequency range), Serial Number,
Embedded Information, MCU Version, Hardware Version, etc.
Radio Parameters:
1) Key Assignment: P1, P2, P3 can be set as long/short key and
the hold time can be defined.
No. Function Description
0 None No function is assigned.
1 Voice
Annunciation
Press the preprogrammed “Voice Annunciation” button to
change the language and mode of voice annunciation.
Meanwhile, the current channel number can be heard.
2 Talk Around
When the preprogrammed “Talk Around” button is
p
ressed, the next transmission will be at the same
frequency as at which it is received.
3 Lone Worker
Press the preprogrammed “Lone Worker” button to
start/stop lone working.
4 Emergency
Alarm
Press the preprogrammed “Emergency Alarm” button to
make warning tone according to the setting of the
p
rogramming software or send your ID or background
sound to your partner or the system. (This function can
only be assigned to the TOP KEY)
5 Emergency
Alarm Off
Press the preprogrammed “Emergency Alarm Off” button
to quit the Emergency Alarm Mode. (This function can
only be assigned to the TOP KEY, and should be used
together with Emergency Alarm function)
6 Scan Press the preprogrammed “Scan” button to start/stop
scanning.
7
Nuisance
Delete(tempo
rary)
If the radio stays at a noise channel while scanning, press
the preprogrammed “Nuisance Delete” button to delete the
nuisance channel temporarily.
8 High/Low
Power Switch
Press the preprogrammed “High/Low Power Switch”
b
utton to switch between high and low transmitting power
of the radio.
9 Momentary
Monitor
Press and hold the preprogrammed “Momentary Monitor”
b
utton to disable CTCSS, DCS signalling, and release the
button to resume normal operation.
10 Monitor
Press the preprogrammed “Monitor” button to disable
CTCSS, DCS signalling, and you can receive signals that
cannot be heard under normal operation. Press it again to
resume normal operation.
11 Momentary
Squelch Off
Press and hold the pre
p
rogrammed “Momentary Squelch
Off” button to open squelch; release it to resume normal
operation
12 Squelch Off Press the preprogrammed “Squelch Off” button to open
squelch. Press it again to resume normal operation.
13 Lone Worker
Reset
Press the preprogrammed “Lone Worker Reset” button
while the radio is in Lone Worker Mode to reset the lone
worker timer, and the timer starts again.
14 FCS Press to start free channel scanning (FCS).
2) Optional Functions
1. Wired Clone enable
2. All Low Power Switch
3. Firmware Programming Mode enable
4. Beep Tone
5. All Low Power
6. Voice Annunciation Setting
7. Battery Save
8. TOT
9. TOT Reset Time
10. TOT Pre-alert
11. TOT Rekey Time
12. Squelch Level Selection
3) Embedded Information
1. Password of Read Radio
2. Password of Write Radio
3. Embedded Information Setting
4) Scan
Scan function setting: Priority Channel selection, Revert
Channel selection, Tx Dwell Time, Dropout Delay Time,
Lookback Time.
FCS function setting: Automatic Tx Time, Automatic Rx Time,
FCS Resume Time, Scanning Times.
5) Emergency Setting
Press the preprogrammed “Emergency Alarm” button (the
hold time should be longer than the debounce time of the
emergency alarm switch) to enter Emergency Alarm Mode. The
radio can make warning tone according to the setting of the
programming software, or send the background sound to your
partner or the system.
Press the preprogrammed “Emergency Alarm Off” button to
Computer
(RS232 serial port) Programming cable
Radio
(Earphone/Program
ming interface)

PT568 Service Manual
10
quit Emergency Alarm Mode, the radio stops making alert, or
stops sending background sound and resumes normal operation.
Channel Information
1) Receiving and transmitting frequencies of each channel
(frequency step: 2.5kHz/5kHz/6.25kHz).
2) Receiving and transmitting signalling of each channel.
a) None
b) CTCSS ([email protected] step)
c) DCS (-777~777@octal number)
3) Busy Channel Lockout (BCL)
4) Clock Beat Shift
5) Channel Spacing Selection: 25kHz/12.5kHz (W/N)
6) Scan Add/Delete
7) FCS Channel Add/Delete
8) Tx Power Selection: High/Low
9) QT Reverse
Please refer to the “Help” document of KSP568 for details.
Note:
1. Firstly, please read data of the radio and back up the data before
editing the parameters on KSP568.
2. If the radio cannot function normally after being written in with
the edited data, please rewrite the backup data into the radio.
3. “Model Information” is important for the radio; users should
not modify it.
4.3 PC Test Mode
Connect the radio to the serial port of the computer with the
special programming cable. Please refer to Figure 4.1.
Warning: Non-professionals should not enter PC Test Mode;
otherwise, the radio may be damaged. Before entering the PC Test
Mode, please firstly connect a 50high frequency load to the
antenna connector of the radio or connect the radio to a general
test set.
In the programming software, enter the Tuning Mode under
the PC Test Mode to tune the following parameters of the radio:
1) Frequency Stability (6250Hz and 2500Hz)
2) Five frequency points of Tx High Power
3) Five frequency points of Tx Low Power
4) Five frequency points for SQL9 On (Wideband)
5) Five frequency points for SQL9 Off (Wideband)
6) Five frequency points for SQL9 On (Narrowband)
7) Five frequency points for SQL9 Off (Narrowband)
8) Five frequency points for SQL1 On (Wideband)
9) Five frequency points for SQL1 Off (Wideband)
10) Five frequency points for SQL1 On (Narrowband)
11) Five frequency points for SQL1 Off (Narrowband)
12) Five frequency points for QT (67.0Hz) Deviation
(Wideband)
13) Center frequency point for QT (67.0Hz) Deviation
(Narrowband)
14) Five frequency points for QT (151.4Hz) Deviation
(Wideband)
15) Center frequency point for QT (151.4Hz) Deviation
(Narrowband)
16) Five frequency points for QT (254.1Hz) Deviation
(Wideband)
17) Center frequency point for QT (254.1Hz) Deviation
(Narrowband)
18) Five frequency points for DQT Deviation (Wideband)
19) Center frequency point for DQT Deviation (Narrowband)
20) Five frequency points for Rx Sensitivity
21) Tx Low Voltage
4.4 Firmware Programming Mode
The radio is in possession with an internal Flash ROM which
can be upgraded when new features are released.
Procedure:
1. Press and hold the Top Key for over 2 seconds while turning the
radio power ON. The LED will light orange and the radio enters
the Firmware Programming Mode.
2. Run the firmware programming software KMU on PC.
3. Connect the radio to the computer by the programming cable.
4. Select a COM port and load the firmware upgrading file. Then
click on “E.P” to start downloading.
5. If the communication ends successfully, turn the radio power
OFF to exit.
6. If you want to continue programming other radios, repeat steps
1 to 5.
4.5 Wired Clone Mode
If the wired clone function is enabled, the radio can enter the
Wired Clone Mode. After entering this mode, the radio will not
exit automatically. The user needs to restart the radio if he wants
the radio to return to the User Mode.
The operation procedure is as follows:
1. Press and hold Side Key 1 while turning the radio power ON to
enter the Wired Clone Mode. If the wired clone function is
disabled, the radio will enter User Mode.
2. Connect the slave radio to the master radio by the cloning cable
(KCL-01) and turn on the power of the slave radio.
3. Press Side Key 2 of the master radio to start cloning. The LED

PT568 Service Manual
11
on the master radio will light red, and the data of the master is sent
to the slave. While the slave is receiving the data, the LED lights
green. When cloning of data is completed, the LED of the master
will go out, and the slave will restart automatically.
4. Carry out the operation in step 3 to clone other slave radios.
Note: The user can enable or disable the wired clone function
through PC programming software. Once the wired clone function
is disabled, the radio cannot enter the Wired Clone Mode.
Chapter 5 Disassembly for Repair
The radio is a piece of precision communication equipment.
Please be careful when disassemble the radio during service. The
instructions for the disassembly are as follows.
5.1 Attaching and Removing the Battery
1) Attaching the Battery
Fit the two extensions at the top of the battery into the slots at
the top of the radio’s body.
Press the bottom part of the battery towards the radio until a
click is heard and the battery is hooked.
2) Removing the Battery
Push the battery latch at the bottom of the radio forward, the
bottom part of the battery will bounce up automatically. Then
release the belt clip and remove the battery from the radio’s body.
Note:
* Do not short-circuit the battery terminals or dispose battery
in fire.
* Do not disassemble the battery casing by yourself.
5.2 Installing/Removing the belt clip
Match the two holes of the belt clip with those on the rear of
the radio, and then fix the belt clip to the radio using the two
supplied 2.5*8 .0 screws. Loose the fixing screws to remove the
belt clip.
5.3 Removing the chassis from the front cabinet
1. Pull out the volume knob and the channel selector knob, and
remove the antenna;
2. Remove the two nuts for knobs and the nut for the antenna
connector by the special tool;
3. Remove the two fixing screws at the lower part of the Al
chassis by a hexagonal screwdriver;
4. Insert a flat-blade screwdriver into the slot at the bottom of the
Al chassis, and prize it up. Then pull the Al chassis backwards to
remove it from the front cabinet. Be careful not to break the
speaker wire.
5. Remove the solder of the speaker wire with a soldering iron.
Then you can remove the chassis from the front cabinet.
See figure below:
5.4 Removing the mainboard from the Al chassis
1. Remove the top waterproof gasket and the top gasket;
2. Remove the screws on the PCB by a cross screwdriver;
3. Remove the solder of the antenna connector with a soldering
iron, and remove the mainboard.
See figure below:
After the aforesaid disassembly, you can repair and adjust the
radio according to its actual malfunction.

PT568 Service Manual
12
5.5 Exploded View
No. Name Part No. PCS
1 PT568 Front Casing 201-000568-R02C 1
2 PT568 Light Guide 201-000568-R09A 1
3 PT568 Logo 401-0201E1-R97B 1
4 PT568 PTT Cover 201-000568-R05C 1
5 PT568 PTT Key 202-000568-R02A 1
6 PT568 Speaker Cover 201-000568-R03B 1
7 PT568 Metal Speaker Net 203-000568-R09C 1
8 PT568 Battery Hook 2 203-000568-R05C 1
9 PT568 Battery Hook 1 203-000568-R04C 1
10 PT568 Spring Sheet 2 for Battery Latch 203-000568-R07A 1
11 PT568 Spring Sheet 1 for Battery Latch 203-000568-R06A 1
12 PT568 Battery Latch 201-000568-R14A 1
13 M2.0*4.0 Screws 301-20040G-R01B 11
14 PT568 Mainboard 602-005682-R01 1
15 PT568 Al Alloy Chassis 203-000568-R02B 1
16 M2.0*8.0 Screws 301-20080G-R02B 2
17 PT568 Earphone Jack Bracket 201-000568-R11A 1
18 PT568 Main Waterproof Loop 202-000568-R01A 1
19 PT568 Bracket Waterproof Washer 202-000568-R05A 1
20 PT568 Battery Connector 201-000568-R13A 1
21 M2.5*8.0 Screws 301-25080J-R01 2
22 PT568 Top Cover 201-000568-R04B 1
23 PT558 Antenna Connector 203-000558-R07B 1
24 M2.0*4.0 Screws 301-20040G-R01B 2
25 PT558 Nut for Antenna 203-000558-R14A 1
26 PT558 Nut for Knob 203-000558-R13A 2
27 PT568 Volume Knob 201-000568-R06A 1
28 PT568 Channel Selector Knob 201-000568-R07A 1
29 PT568 Top Waterproof Gasket 202-000568-R04A 1
30 PT568 Top Gasket 203-000568-R08A 1
31 PT558 MIC Seal 202-000558-R09 1
32 Speaker 121-100000-R20 1
33 PT568 Earphone Jack Cover 201-000568-R10B 1
34 PT558 Waterproof Net for Speaker 204-000558-R01 1
35 PT568 Waterproof Gasket for MIC Head 204-000568-R01A 2
36 PT568 Emergency Button 202-000568-R03A 1
Chapter 6 Adjustment
Before test/adjustment, make sure all equipment has been well
connected to the ground!
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.
6.1 Equipment and Software Required for Test and
Adjustment
Equipment and software listed in Table 6.1 are required for
test and adjustment of PT568.
Table 6.1 Equipment and Software Required for Test and
Adjustment
No. Item Specifications
1 Computer
P2 or above, IBM compatible PC,
WINDOWS 98/ME/2000/XP Operating
System
2 Programming software KSP568
3 Programming cable
4 Clone cable KCL01
5 DC regulated power supply Output voltage: 7.5V
Output current: 5A
6 RF power meter
Measurement range: 0.5-10W
Frequency range: 100MHz-500MHz
Impedance: 50
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: DC - 600MHz
Measurement range: 0 - ±5kHz
9 DMM
Input impedance: above 10M/V DC,
capable of measuring voltage, current and
resistance.
10 Audio signal generator Frequency range:2-3000Hz
Output level: 1-500mV
11 RF power attenuator Attenuation: 40dB or 50dB
Supporting power : higher than 10W
12 Standard signal generator
Frequency range: 10MHz-1000MHz
Output level:
0.1uV-32mV (-127dBm~-17dBm)
13 Oscilloscope Frequency range: DC~20MHz
Test range: 10mV-20V
14 Audio frequency voltmeter Test range: 10mV-10V
Recommendation: Item 6, 7, 8, 10, 11, and 12 listed in the
table can be replaced by HP8920 general test set.

PT568 Service Manual
13
Figure 6.1 External Speaker/Microphone Interface Definition
6.2 Adjustment
After changing components during the maintenance, it is
necessary to test the radio and adjust its technical parameters. The
following part is going to introduce the adjustment items.
Some parameters can be adjusted by use of KSP568
programming software (in the Tuning Mode). The adjustable
parameters are as follows:
1) 6250Hz Precision
2) 2500Hz Precision
3)TxPower
4) Tx Low Voltage
5) Squelch Level
6) QT Deviation
7) DCS Deviation
8) Rx Sensitivity
Steps for adjustment:
a. Enter PC Test Mode. Refer to Section 4.2.1.
b. Click “Edit” in the main menu of KSP568 programming
software, and then click “Entry Tuning” in the pull-down menu to
enter the Tuning Mode.
c. Then the “Tuning Item List” screen will pop up. Double
click the item you want to adjust, and then you can adjust the
parameters.
d. Exit the PC Test Mode after adjustment.
6.3 Adjustment
6.3.1 VCO
Disable the “Battery Save” function, and set the Rx frequency
at the high frequency point (see Table 6.2). Under the receiving
status, measure the voltage of PD by DMM. Then adjust the PD
voltage to be 4.0V±0.2V by tuning the trimming capacitor C180.
Set the Tx frequency at the low frequency point (see Table
6.2), and press the PTT button. Then measure the voltage of PD
by DMM. The resulting voltage should be higher than 0.5V.
Table 6.2 High/Center/Low Frequency Point for PT568
Low Freq Point Center Freq Point High Freq Point
PT568(1) 136.125 MHz 145.125 MHz 173.975 MHz
PT568(2) 400.125MHz 425.125MHz 449.975MHz
PT568(3) 420.125MHz 445.125MHz 469.975MHz
6.3.2 PLL frequency
1. In the Tuning Mode, double click “6250Hz precision” to
enter. Adjust the parameter among 0-255 to make the Tx
frequency at the rated value (error within ±200Hz).
2. In the Tuning Mode, double click “2500Hz precision” to
enter. Adjust the parameter among 0-255 to make the Tx
frequency at the rated value (error within ±200Hz).
6.3.3 Tx Power
In the Tuning Mode, double click Tx “High power” to enter.
Adjust the five frequency points of “Lowest”, “Low”, “Mid”,
“High” and “Highest” among 0-255 to make the Tx power at 4W.
Meanwhile, observe the operating current, and make sure that the
current 1.8A.
In the Tuning Mode, double click Tx “Low power” to enter.
Adjust the five frequency points of “Lowest”, “Low”, “Mid”,
“High” and “Highest” among 0-255 to make the Tx power higher
than 0.5W.
6.3.4 Tx Low Voltage
Firstly, adjust the power voltage to be 6.8V. Double click “Tx
low voltage” in the Tuning Mode to enter. The software will test
automatically. When the value changes no more or only changes a
little, click SAVE to exit.
6.3.5 Deviation
Input audio signal (120mV, 1000Hz) to the MIC jack of the
radio. Adjust the potentiometer VR2 to make the Tx deviation at ±
4.2kHz.
6.3.6 DCS Tx Signal Waveform and Deviation
In the Tuning Mode, double click “DCS DEV” to enter. Adjust
the potentiometer VR1 and observe the demodulation signal (the
waveform should be smooth and similar to square wave). Click
wideband, and adjust the five frequency points of “Lowest”,
“Low”, “Mid”, “High”, and “Highest” to make the deviation at
0.75kHz. Then click narrowband, and adjust the value to make the
deviation at 0.35kHz.
6.3.7 CTCSS Deviation
In the Tuning Mode, double click “QT (67.0) DEV” to enter.
Click wideband, and adjust the five frequency points of “Lowest”,
“Low”, “Mid”, “High”, and “Highest” to make the deviation at

PT568 Service Manual
14
0.75kHz. Then click narrowband, and adjust the value to make the
deviation at 0.35kHz.
In the Tuning Mode, double click “QT(151.4) DEV” to enter.
The tuning method is the same as that of “QT(67.0) DEV”.
In the Tuning Mode, double click “QT(254.1) DEV” to enter.
The tuning method is the same as that of “QT(67.0) DEV”.
6.3.8 Receiver Sensitivity
In the Tuning Mode, double click “Sensitivity” to enter. Adjust
the five frequency points of “Lowest”, “Low”, “Mid”, “High”,
and “Highest” among 0-255 to make the sensitivity be the highest.
6.3.9 Receiver Squelch
In the Tuning Mode, double click “SQL9 On” to enter. Click
wideband and use the following method to adjust the five
frequency points of “Lowest”, “Low”, “Mid”, “High”, and
“Highest” respectively. Firstly, click one of the frequency points,
and adjust the RF signal frequency of the test equipment to be the
same with the receiving frequency of that frequency point, and
adjust the signal level to be -116dBm. Then adjust the frequency
of the modulation signal to be 1kHz and the deviation to be 3kHz.
The programming software will adjust the value automatically.
When the value keeps stable, the adjustment of that frequency
point is completed. Then click the next frequency point to do the
adjustment. After all of the five frequency points are adjusted, use
the same method to adjust the five frequency points for
narrowband. The only difference is that the frequency of the
modulation signal should be 1kHz, and the deviation should be
1.5kHz.
In the Tuning Mode, double click “SQL9 Off” to enter. Click
wideband and use the following method to adjust the five
frequency points of “Lowest”, “Low”, “Mid”, “High”, and
“Highest” respectively. Firstly, click one of the frequency points,
and adjust the RF signal frequency of the test equipment to be the
same with the receiving frequency of that frequency point, and
adjust the signal level to be -118dBm. Then adjust the frequency
of the modulation signal to be 1kHz and the deviation to be 3kHz.
The programming software will adjust the value automatically.
When the value keeps stable, the adjustment of that frequency
point is completed. Then click the next frequency point to do the
adjustment. After all of the five frequency points are adjusted, use
the same method to adjust the five frequency points for
narrowband. The only difference is that the frequency of the
modulation signal should be 1kHz, and the deviation should be
1.5kHz.
In the Tuning Mode, double click “SQL1 On” and “SQL1
Off” to enter respectively. Use the same method stated above to do
the adjustment. The only difference is that the RF signal level for
“SQL1 On” should be 123dBm, and the RF signal level for
“SQL1 Off” should be 125dBm.
6.4 Adjustment Description
See Table 6.3, 6.4, and 6.5.
Table 6.3 VCO
Item Test Condition Test
Equipment
Measurement
Terminal
Adjustment
Parts Requirement Remark
Setting BATT terminal voltage: 7.5V DMM CV
CH: Rx high freq point C180 4.0V±0.2V Adjustment
VCO lock voltage CH: Tx high freq point 4.0V±0.2V Adjustment
Table 6.4 Receiver Section
Item Test Condition Test
Equipment
Measurement
Terminal
Adjustment
Parts Requirement Remark
Audio level
Test freq: Mid freq point
Antenna input:
RF OUT: -53dBm (501V)
MOD: 1kHz
DEV: ±3.0kHz
Audio load: 16
(Turn the
volume knob
clockwise to
the end) Audio
power ＞
1.2W
Sensitivity
CH: Mid freq point
CH: Low freq point
CH: High freq point
RF OUT: -119dBm (0.25V)
MOD: 1kHz
DEV: ±3.0kHz
PC Tuning
Mode
SINAD: 12dB
or higher
CH: Rx center freq pointSQL On sensitivity
Level 9
RF OUT: -116dBm
RF signal
generator
Oscilloscope
Audio
frequency
voltmeter
Distortion
meter
/General test
set
Speaker
connector
PC Tuning
Mode
Normal
squelch on
after

PT568 Service Manual
15
Level 1
RF OUT: -123dBm
adjustment
Table 6.5 Transmitter Section
Item Test condition Test
equipment
Measuring
terminal
Adjustment
parts Requirement Remark
Tx frequency
Frequency
counter /
General test set
PC Tuning
Mode Within ±200Hz
DCS waveform
(balance) Oscilloscope / General test set VR1
Smooth and
similar to square
wave
Power Power: 7.5V
Power meter/
General test set
Ammeter
PC Tuning
Mode Adjust to 4W Within ±0.2W
Max. modulation
deviation
CH：Tx center freq point
AG：1kHz/220mV VR2 Adjust to ±4.2kHz ±200Hz
Modulation
sensitivity
CH：Tx center freq point
AG：1kHz/22mV
Deviation
meter/ General
test set
Deviation
checked should be
2.2kHz~3.6kHz
CTCSS DEV CTCSS：67Hz
Deviation
meter/
General test
set
PC Tuning
Mode
Adjust to
±0.75kHz ±50Hz
DCS DEV DCS：023N
Deviation
meter/
General test
set
PC Tuning
Mode
Adjust to
±0.75kHz ±50Hz
Low battery
warning Battery terminal: 6.8V
Antenna
PC Tuning
Mode
Indicator flashes
after adjustment
Chapter 7 Specifications
7.1 General Specifications
Product Model PT568
136 ~ 174 MHz
400 ~ 450MHz
Frequency
420 ~ 470 MHz
Number of Channels 16
Channel Spacing W: 25 kHz /N:12.5kHz
Operating Temperature -25℃~ +55℃
Antenna Impedance 50
Frequency Stability ±2.5ppm
Battery (Standard
Configuration) Li-Poly Battery: 1500mAH 7.4V
Dimension (W×H×D) 52.5mm × 111mm × 33.5mm
Weight 270g: with antenna and 1500mAh
Li-Poly Battery
7.2 Receiver Section
Sensitivity (12dB SINAD) 0.25V(W) / 0.28V(N)
Adjacent Channel Selectivity W: 70dB / N:60dB
Intermodulation Interference 65dB
Audio Output Power 1W (16)
Audio Distortion 5%
7.3 Transmitter Section
Tx Power 4W(UHF) / 5W(VHF)
Modulation Type W:16KF3E / N:11KF3E
Clutter and Harmonic -36 dBm
Residual FM（300~3000Hz）W:-45 dB / N:-40dB
Audio Distortion（300~3000Hz）5%
Adjacent Channel Power W:70dB / N:60dB
Max. Deviation W: <±5kHz / N: <±2.5kHz
Chapter 8 Troubleshooting
No. Problem Causes and Solutions
1 No display after
switching on
the radio
A. Battery power may be insufficient, please recharge
or change the battery pack.
B. The power switch is broken, please change it.
C. The CPU is broken, please change the IC.
D. The regulator tube IC12 is broken, please change
the IC.
2 PLL
unlocked
(Beeping)
A. The PLL crystal oscillator X4 is broken. Please
change it.
B. The oscillator transistor Q14 and Q15 are broken.
Please change them.
C. The PLL IC1 is broken. Please change it.
3 Cannot talk to
or hear other
A. The frequencies of both users are not the same,
select the same frequency channel.

PT568 Service Manual
17
group members B. The CTCSS/DCS of both users are not the same.
Please reset it with PC.
C. The radio is out of the effective communication
range.
4 Cannot receive
signals
A. The antenna is in poor contact. Please fasten the
antenna until secure.
B. The sensitivity is too low, please adjust it with PC.
C. The HF amplifier Q20 is broken. Please change it.
D. The squelch level is too high and the squelch cannot be
opened. Please reset the squelch level with PC.
E. The mixing tube Q19 is broken. Please change it.
F. The FM processing chip IC5 is broken. Please
change it.
G. The crystal filter XF1, XF2 are broken, please
change them.
H. The ceramic filter CF1 is broken, please change it.
5 The
transmitting red
light is on, but
no voice is
heard by the
recipient.
A. The amplifier tube Q11 is broken, so there is no
power output, please change it.
B. The microphone is broken, please change it.
C. The operational amplifier IC3 is broken, please
change it.
6 The receiving
green light is
on, but no voice
is heard.
A. The speaker is broken. Please change it.
B. The audio power amplifier IC8 is broken. Please
change it.
C. The switch tube Q36, Q35 are broken, please
change them.
D. The operational amplifier IC6 is broken, please
change it.
7 Cannot program
the radio
parameters
normally
A. The cable connection is wrong, please check the
cable connection.
B. The computer RS232 serial port output is
abnormal, please check the computer.
C. The external MIC/Speaker jack is in poor contact,
please change the jack.
Chapter 9 KBC-70Q Charger
9.1 Working Conditions and General Specifications
a) Applicable battery: Li-poly (2*3.7v) and Ni-MH (6*1.2) battery
(battery capacity: 1 – 2.4AH).
b) Applicable power adapter: DC 11V-16V, 1000mA. Voltage of
standard power adapter: 12V.
c) Idling input current: 15mA.
d) Pre-charge current: 75mA ± 10mA.
e) Pre-charge time limit: 15Min.
f) Constant charging current: 800mA ± 40mA.
g) Max. charging voltage for Li-poly battery: 8.32 – 8.42V;
Max. charging voltage for Ni-MH battery: 9.6 ± 0.1V.
9.2 Function Description
1. KBC-70Q is an intelligent charger which is safe and reliable,
and has fast charging speed and high charging saturation.
2. Status indication function: In the pre-charge process, the red
LED will flash; in the charging process, the red LED will light; if
the radio is fully charged, or no battery is inserted to the charger
slot, or the battery is in the protection status, the green LED will
light; if the battery output is in short circuit, the yellow LED will
flash.
3. External port of KBC-70Q can identify Li-poly battery and
Ni-MH battery.
4. Short circuit protection: If the positive and negative terminals
of the charger are in short circuit, the yellow LED will flash, and
the charging current will be cut off. After the fault is removed, the
charger will resume normal operation.
5. Fully charged battery identification: If the user recharges a
Ni-MH battery that has been fully charged, the charger will still
charge the battery, and will judge if the battery is fully charged
according to normal –V; if the user recharges a Li-poly battery
that has been fully charged, the charger will detect the voltage of
the battery. If the voltage is higher than 8.25V, the charger will not
charge; if the voltage is lower than 8.25V, the charger will charge
the battery again.
6. Temperature protection: For Li-poly battery, when the
temperature is higher than 55℃, the charger will stop charging,
and the yellow LED will light; when the temperature comes back
to 45℃, the charger will start charging again. For Ni-MH battery,
when the temperature is higher than 60℃, the charger will stop
charging, and the yellow LED will light; when the temperature
comes back to 50℃, the charger will start charging again.
7. When the radio is in the standby mode, if it is inserted into the
charger slot, the charger will charge it automatically if the battery
voltage is lower than 8.2V.
8. LED status:
LED Status
Charger Status Charging
Indicator
(red)
Power
Indicator
(green)
Indicator for
abnormal battery
temperature
(yellow)
Standby/No battery
inserted / Light /
Pre-charge Flash / /
Rapid charge Light / /
Charging completed / Light /
Abnormal
charging status / / Light
Interface Description
Red LED: Charging indication
Green LED: Power indication/charging completion indication
Yellow LED: Abnormal charging indication

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18
Face the charger, from left to right:
B-: Charging output negative terminal
TYPE: Battery type detection
Suspended: Ni-MH battery
Grounded: Li-poly battery
TEMP: Battery temperature detection.
B+: Charging output positive terminal
Appendix 1Abbreviations
AMP: Amplify, amplifier
ANT: Antenna
APC: Automatic Power Control
BPF: Band Pass Filter
CTCSS: Continuous Tone Control Squelch System
DCS: Digital Code Squelch
DEMOD: Demodulation
E2PROM: Electrical Erasable Programmable Read Only Memory
HPF: High Pass Filter
IDC: Instantaneous Deviation Control
IF: Intermediate Frequency
LED: Light-Emitting Diode
LNA: Low Noise Amplifier
LPF: Low Pass Filter
MCU: Micro Control Unit
MIC: Microphone
MOD: Modulation
MONI: Monitor
PLL: Phase Lock Loop
PTT: Push-to-talk
RX: Receiver
SPK: Speaker
TCXO: Temperature Compensated Crystal Oscillators
TX: Transmitter
UL: Un-lock
VCO: Voltage Control Oscillator
Appendix 2 Electronic Parts List
No. Part No. Description Unit PCS Position Mark
1 101-00568U-R02
PT568PCB / UHF, four layers, FR4, 1.2mm, PT568U-090409,
ROHS pcs 1
2 102-9140NR-R01 Reset IC / PST9140NR, ROHS pcs 1 IC11
3 102-A31136-R01 IF (FM) demodulation IC / TA31136FN,SSOP, ROHS pcs 1 IC5
4 102-AT2408-R02 Memory IC / AT24C08BN-SH, ROHS pcs 1 IC9
5 102-B15E03-R01 PLL IC / MB15E03SL,PLL,16-PIN,SSOP, ROHS pcs 1 IC1
6 102-DA8541-R01 Audio power amplifier / TDA8541,SO8, ROHS pcs 1 IC8
7 102-HT7130-R01 Voltage regulator IC / HT7130-1,SOT-89, ROHS pcs 1 IC14
8 102-HT7150-R01 Voltage regulator IC / HT7150-1, ROHS pcs 1 IC12
9 102-M2902V-R01 Operational amplifier / NJM2902V,OP-AMP, ROHS pcs 3 IC4, IC6, IC7
10 102-M2904V-R01 Operational amplifier / NJM2904V,OP-AMP, ROHS pcs 1 IC3
11 103-00MA77-R01 Chip HF switch diode / MA77,0805, ROHS pcs 1 D1
12 103-1SR154-R01 Chip rectifying diode / 1SR154-400(ROHM), ROHS pcs 1 D33
13 103-1SS372-R01 Chip switch diode / 1SS372(TOSHIBA), ROHS pcs 1 D13
14 103-1SV278-R01 Chip variable capacitor diode / 1SV278, ROHS pcs 2 D9, D10
15 103-1SV325-R01 Chip variable capacitor diode / 1SV325, ROHS pcs 2 D8, D11
16 103-A2S111-R01 Chip switch diode / 0603,MA2S111(PANASONIC), ROHS pcs 3 D15, D16, D25
17 103-DAN222-R01 Chip switch diode / DAN222,(ROHM), ROHS pcs 1 D308
18 103-HSC277-R01 Chip diode / waveband switch,HSC277(HITACHI), ROHS pcs 3 D3, D6, D7
19 103-HVC131-R01 Chip HF switch diode / 0603,HVC131(HITACHI), ROHS pcs 2 D4, D5
20 103-HVC350-R01 Chip variable capacitor diode / 0603,HVC350B(HITACHI), ROHS pcs 6 D21, D22, D23, D24, D26, D30
21 103-HZU5AL-R01 Chip voltage regulator diode / HZU5ALL(HITACHI), ROHS pcs 1 D14
22 103-L190YG-R01 Chip LED / 0603, green, H19-213SYGC, ROHS pcs 2 D20, D29
23 103-MHC190-R02 Chip LED / 0603, red, 19-21SURC/S530-A2/TR8, ROHS pcs 1 D28
24 103-RB706F-R01 Chip switch diode / RB706F-40,SOT-323, ROHS pcs 1 D17
25 103-RKV500-R01 Chip variable capacitor diode / 0805,RKV500KG, ROHS pcs 1 D12
26 104-A144EE-R01 Chip triode / DTA144EE(ROHM), ROHS pcs 4 Q17, Q33, Q34, Q40

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27 104-C144EE-R01 Chip triode / DTC144EE(ROHM), ROHS pcs 13 Q8, Q22, Q23, Q26, Q27, Q28, Q35, Q39, Q42,
Q44, Q45, Q46, Q52
28 104-C144EU-R01 Chip triode / DTC144EUA(ROHM), ROHS pcs 1 Q18
29 104-KRX102-R01 Chip triode / KRX102U,with,bias,resistor, ROHS pcs 1 IC2
30 104-MT717T-R01 Chip triode / FMMT717TA, ROHS pcs 1 Q30
31 104-SA1586-R01 Chip triode / 2SA1586, ROHS pcs 1 Q43
32 104-SC1623-R01 Chip triode / 2SC1623, ROHS pcs 1 Q10
33 104-SC3356-R01 Chip triode / 2SC3356,R24, ROHS pcs 1 Q3
34 104-SC4617-R02 Chip triode / 2SC4617(R)(ROHM), ROHS pcs 4 Q6, Q7, Q9, Q37
35 104-SC4919-R01 Chip triode / 2SC4919,MUTING,CIRCUIT(SANYO), ROHS pcs 1 Q24
36 104-SC5108-R01 Chip triode / 2SC5108Y(TOSHIBA), ROHS pcs 3 Q2, Q4, Q5
37 104-TA1298-R01 Chip triode / KTA1298(Y), ROHS pcs 3 Q29, Q31, Q32
38 104-TC4082-R01 Chip triode / KTC4082,(KEC), ROHS pcs 2 Q1, Q21
39 105-2SJ243-R01 Chip FET / 2SJ243, ROHS pcs 1 Q16
40 105-2SK508-R01 Chip FET / 2SK508NV(K52), ROHS pcs 2 Q14, Q15
41 105-3SK318-R01 Chip FET / 3SK318, ROHS pcs 2 Q19, Q20
42 105-RD01MU-R01 Chip FET / RD01MUS2, ROHS pcs 1 Q12
43 105-SK1824-R01 Chip FET / 2SK1824, ROHS pcs 6 Q13, Q25, Q36, Q38, Q41, Q51
44 105-SK3476-R01 Chip FET / 2SK3476, ROHS pcs 1 Q11
45 105-ST2302-R01 Chip FET / ST2302, ROHS pcs 2 Q47, Q48
46 106-0BA010-R01 Button switch / SKHLLBA010, ROHS pcs 1 K1
47 106-454548-R01 Touch switch / 4.5*4.5*4.8, ROHS pcs 2 K2, K4
48 106-LBE010-R01 Chip touch switch / SKRTLBE010, ROHS pcs 1 K3
49 106-RE0814-R02 Encoder switch / RE08140AX-V01-0000,16P16 , ROHS pcs 1 SW2
50 108-450C24-R02 Chip discriminator / JTBM450CX24, ROHS pcs 1 CD1
51 108-CF450G-R02 Chip ceramic filter / LTWC450G,450kHz±5kHz, ROHS pcs 1 CF1
52 108-XF5165-R01
Chip crystal filter / DSF753SBF ，51.65MHz ±4kHz/3dB ，
(7.0x5.0x1.3)mm，ROHS pcs 1 XF1
53 109-040000-R01 Chip resistor / 0402,0R±5%, ROHS pcs 20
C67, C166, C250, R7, R18, R24, R27, R30, R141,
R182, R183, R203, R217, R241, R260, R261, R262,
R268, R278, R283
54 109-040100-R01 Chip resistor / 0402,10R±5%, ROHS pcs 6 R95, R96, R98, R101, R127, R200
55 109-040101-R01 Chip resistor / 0402,100R±5%, ROHS pcs 6 R4, R12, R89, R90, R128, R240
56 109-040102-R01 Chip resistor / 0402,1K±5%, ROHS pcs 20
R37, R38, R41, R42, R47, R48, R49, R50, R69,
R129, R130, R131, R150, R152, R157, R191, R199,
R234, R238, R256
57 109-040103-R01 Chip resistor / 0402,10K±5%, ROHS pcs 23
R29, R80, R92, R100, R109, R110, R116, R117,
R119, R120, R121, R122, R123, R133, R136, R137,
R138, R139, R140, R194, R205, R275, R280
58 109-040104-R01 Chip resistor / 0402,100K±5%, ROHS pcs 18
R6, R102, R104, R115, R154, R158, R174, R197,
R212, R226, R228, R235, R236, R243, R247, R257,
R272, R300
59 109-040105-R01 Chip resistor / 0402,1M±5%, ROHS pcs 9 R43, R79, R84, R103, R107, R160, R162, R266,
R297
60 109-040111-R01 Chip resistor / 0402,110R±5%, ROHS pcs 1 R91
61 109-040122-R01 Chip resistor / 0402,1.2K±5%, ROHS pcs 1 R188
62 109-040123-R01 Chip resistor / 0402,12K±5%, ROHS pcs 2 R211, R301
63 109-040124-R01 Chip resistor / 0402,120K±5%, ROHS pcs 5 R5, R8, R9, R17, R248
64 109-040152-R01 Chip resistor / 0402,1.5K±5%, ROHS pcs 1 R54
65 109-040153-R01 Chip resistor / 0402,15K±5%, ROHS pcs 9 C187, C188, C189, R52, R76, R142, R155, R156,
R192
66 109-040154-R01 Chip resistor / 0402,150K±5%, ROHS pcs 4 R94, R113, R190, R201
67 109-040181-R01 Chip resistor / 0402,180R±5%, ROHS pcs 3 R70, R71, R189
68 109-040182-R01 Chip resistor / 0402,1.8K±5%, ROHS pcs 2 R44, R224
69 109-040183-R01 Chip resistor / 0402,18K±5%, ROHS pcs 4 R149, R210, R218, R219
70 109-040184-R01 Chip resistor / 0402,180K±1%, ROHS pcs 3 R66, R67, R86
71 109-040203-R01 Chip resistor / 0402,20K±5%, ROHS pcs 1 R249

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19
72 109-040220-R01 Chip resistor / 0402,22R±5%, ROHS pcs 3 R73, R93, R274
73 109-040221-R01 Chip resistor / 0402,220R±5%, ROHS pcs 6 R179, R180, R214, R215, R216, R244
74 109-040222-R01 Chip resistor / 0402,2.2K±5%, ROHS pcs 5 R2, R39, R185, R186, R187
75 109-040223-R01 Chip resistor / 0402,22K±5%, ROHS pcs 3 R106, R198, R209
76 109-040224-R01 Chip resistor / 0402,220K±5%, ROHS pcs 12 R87, R126, R164, R207, R227, R233, R246, R251,
R252, R269, R279, R281
77 109-040271-R01 Chip resistor / 0402,270R±5%, ROHS pcs 1 R35
78 109-040272-R01 Chip resistor / 0402,2.7K±5%, ROHS pcs 4 R40, R148, R223, R363
79 109-040273-R01 Chip resistor / 0402,27K±5%, ROHS pcs 6 R46, R99, R171, R172, R193, R271
80 109-040274-R01 Chip resistor / 0402,270K±5%, ROHS pcs 1 R231
81 109-040330-R01 Chip resistor / 0402,33R±5%, ROHS pcs 1 R72
82 109-040332-R01 Chip resistor / 0402,3.3K±5%, ROHS pcs 8 R26, R55, R56, R57, R59, R60, R97, R111
83 109-040333-R01 Chip resistor / 0402,33K±5%, ROHS pcs 8 R25, R114, R161, R196, R206, R258, R263, R265
84 109-040334-R01 Chip resistor / 0402,330K±5%, ROHS pcs 3 R15, R82, R105
85 109-040392-R01 Chip resistor / 0402,3.9K±5%, ROHS pcs 2 R221, R222
86 109-040393-R01 Chip resistor / 0402,39K±5%, ROHS pcs 2 R53, R68
87 109-040394-R01 Chip resistor / 0402,390K±5%, ROHS pcs 1 R165
88 109-040470-R01 Chip resistor / 0402,47R±5%, ROHS pcs 2 R31, R32
89 109-040471-R01 Chip resistor / 0402,470R±5%, ROHS pcs 2 R3, R81
90 109-040472-R01 Chip resistor / 0402,4.7K±5%, ROHS pcs 4 R151, R159, R204, R282
91 109-040473-R01 Chip resistor / 0402,47K±5%, ROHS pcs 16 R10, R11, R13, R14, R19, R20, R21, R22, R28,
R75, R118, R125, R153, R273, R277, R292
92 109-040474-R01 Chip resistor / 0402,470K±5%, ROHS pcs 3 R166, R232, R264
93 109-040560-R01 Chip resistor / 0402,56R±5%, ROHS pcs 1 R58
94 109-040561-R01 Chip resistor / 0402,560R±5%, ROHS pcs 1 R202
95 109-040562-R01 Chip resistor / 0402,5.6K±5%, ROHS pcs 9 R61, R62, R63, R64, R65, R132, R184, R195, R302
96 109-040563-R01 Chip resistor / 0402,56K±5%, ROHS pcs 12 R16, R173, R175, R176, R177, R178, R225, R239,
R254, R267, R270, R284
97 109-040564-R01 Chip resistor / 0402,560K±5%, ROHS pcs 1 R163
98 109-040682-R01 Chip resistor / 0402,6.8K±5%, ROHS pcs 2 C276, R220
99 109-040683-R01 Chip resistor / 0402,68K±5%, ROHS pcs 1 R245
100 109-040684-R01 Chip resistor / 0402,680K±5%, ROHS pcs 1 R77
101 109-040821-R01 Chip resistor / 0402,820R±5%, ROHS pcs 1 R33
102 109-040822-R01 Chip resistor / 0402,8.2K±5%, ROHS pcs 3 R36, R229, R230
103 109-040823-R01 Chip resistor / 0402,82K±5%, ROHS pcs 2 R51, R255
104 109-040913-R01 Chip resistor / 0402,91K±5%, ROHS pcs 1 R213
105 109-060000-R01 Chip resistor / 0603,0R±5%, ROHS pcs 5 L23, L34, L62, L66, R23
106 109-060100-R01 Chip resistor / 0603,10R±5%, ROHS pcs 1 L21
107 109-060101-R01 Chip resistor / 0603,100R±5%, ROHS pcs 2 R74, R88
108 109-060154-R02 Chip resistor / 0603,150K±1%, ROHS pcs 6 R143, R144, R145, R146, R147, R170
109 109-060220-R01 Chip resistor / 0603,22R±5%, ROHS pcs 1 L54
110 109-060271-R01 Chip resistor / 0603,270R±5%, ROHS pcs 1 R34
111 109-100R47-R01 Chip resistor / 1206,0.47R±5%, ROHS pcs 3 R167, R168, R169
112 110-110503-R01 Chip trimming resistor / EVM2NSX80B54，50K±25%，B Linear,
ROHS pcs 1 VR2
113 110-110683-R02 Chip trimming resistor / EVM2NSX80BS4，68K±25%，B Linear，
PANASONIC, ROHS pcs 1 VR1
114 110-220103-R03 Volume switch / RY-6932，ROHS pcs 1 SW1
115 111-030000-R01 Chip self-resume fuse / 433003,3A/32V,1206(original 429003)，
ROHS pcs 1 F1
116 112-043100-R01 Chip capacitor / 0402,10P±0.5P,50V,C0G, ROHS pcs 6 C47, C124, C142, C257, C282, C288
117 112-043101-R01 Chip capacitor / 0402,100P±5%,50V,C0G, ROHS pcs 2 C119, C196
118 112-043102-R01 Chip capacitor / 0402,1000P±10%,50V,X7R, ROHS pcs 29
C38, C72, C73, C75, C96, C97, C98, C99, C100,
C103, C104, C105, C106, C109, C111, C112, C114,
C150, C151, C169, C172, C184, C241, C263, C264,
C272, C278, C279, C294
119 112-043103-R01 Chip capacitor / 0402,0.01uF±10%,50V,X7R, ROHS pcs 17 C23, C50, C79, C138, C149, C153, C155, C159,

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20
C160, C161, C162, C190, C226, C232, C253, C296,
C313
120 112-043104-R01 Chip capacitor / 0402,0.1uF,+80%--20%,16V,Y5V, ROHS pcs 6 C179, C185, C317, C318, C357, C358
121 112-043104-R02 Chip capacitor / 0402,0.1uF±10%,16V,X7R, ROHS pcs 20
C35, C82, C83, C85, C101, C167, C168, C173,
C174, C175, C176, C177, C178, C221, C231, C233,
C254, C271, C307, C310
122 112-043105-R01 Chip capacitor / 0402,1uF±10%,6.3V,X5R, ROHS pcs 15 C25, C30, C123, C170, C225, C235, C248, C251,
C300, C303, C315, C321, C326, C331, C400
123 112-043121-R01 Chip capacitor / 0402,120P±5%,50V,C0G, ROHS pcs 1 C214
124 112-043122-R01 Chip capacitor / 0402,1200P±10%,50V,X7R, ROHS pcs 1 C211
125 112-043123-R01 Chip capacitor / 0402,0.012uF±10%,25V,X7R, ROHS pcs 5 C157, C158, C239, C249, C275
126 112-043130-R01 Chip capacitor / 0402,13P±5%,50V,C0G, ROHS pcs 1 C69
127 112-043150-R01 Chip capacitor / 0402,15P±5%,50V,C0G, ROHS pcs 2 C86, C195
128 112-043152-R01 Chip capacitor / 0402,1500P±10%,50V,X7R, ROHS pcs 1 C289
129 112-043180-R01 Chip capacitor / 0402,18P±5%,50V,C0G, ROHS pcs 1 C212
130 112-043182-R01 Chip capacitor / 0402,1800P±10%,50V,X7R, ROHS pcs 2 C51, C113
131 112-0431R0-R01 Chip capacitor / 0402,1P±0.25P,50V,C0G, ROHS pcs 1 C229
132 112-043200-R01 Chip capacitor / 0402,20P±5%,50V,C0G, ROHS pcs 1 C141
133 112-043220-R01 Chip capacitor / 0402,22P±5%,50V,C0G, ROHS pcs 3 C143, C255, C256
134 112-043221-R01 Chip capacitor / 0402,220P±5%,50V,C0G, ROHS pcs 1 C295
135 112-043222-R01 Chip capacitor / 0402,2200P±10%,50V,X7R, ROHS pcs 1 C262
136 112-043223-R01 Chip capacitor / 0402,0.022uF±10%,25V,X7R, ROHS pcs 1 C245
137 112-043224-R02 Chip capacitor / 0402,0.22uF±10%,10V,X7R, ROHS pcs 1 C280
138 112-043270-R01 Chip capacitor / 0402,27P±5%,50V,C0G, ROHS pcs 1 C227
139 112-043271-R01 Chip capacitor / 0402,270P±10%,50V,X7R, ROHS pcs 1 C1
140 112-043273-R01 Chip capacitor / 0402,0.027uF±10%,50V,X7R, ROHS pcs 2 C244, C323
141 112-0432R0-R01 Chip capacitor / 0402,2P±0.25P,50V,C0G, ROHS pcs 2 C218, C301
142 112-043300-R01 Chip capacitor / 0402,30P±5%,50V,C0G, ROHS pcs 2 C200, C319
143 112-043330-R01 Chip capacitor / 0402,33P±5%,50V,C0G, ROHS pcs 1 C171
144 112-043333-R01 Chip capacitor / 0402,0.033uF±10%,16V,X7R, ROHS pcs 3 C213, C223, C283
145 112-043360-R01 Chip capacitor / 0402,36P±5%,50V,C0G, ROHS pcs 1 C90
146 112-043392-R01 Chip capacitor / 0402,3900P±10%,50V,X7R, ROHS pcs 3 C222, C238, C284
147 112-043393-R01 Chip capacitor / 0402,0.039uF±10%,10V,X7R, ROHS pcs 1 C299
148 112-0433R0-R01 Chip capacitor / 0402,3P±0.25P,50V,C0G, ROHS pcs 4 C70, C182, C230, C302
149 112-043470-R01 Chip capacitor / 0402,47P±5%,50V,C0G, ROHS pcs 2 C4, C293
150 112-043471-R01 Chip capacitor / 0402,470P±10%,50V,X7R, ROHS pcs 79
C6, C286, C74, C107, C7, C8, C9, C10, C11, C12,
C13, C14, C15, C16, C17, C18, C19, C20, C21,
C22, C24, C26, C28, C29, C31, C34, C36, C37,
C39, C40, C41, C42, C43, C44, C45, C48, C49,
C52, C53, C54, C55, C56, C58, C59, C60, C61,
C71, C84, C102, C108, C110, C125, C146, C152,
C154, C163, C183, C186, C220, C237, C261, C267,
C268, C269, C270, C274, C277, C287, C290, C291,
C297, C305, C316, C320, C327, C328, C329, C502,
R78
151 112-043472-R01 Chip capacitor / 0402,4700P±10%,25V,X7R, ROHS pcs 6 C156, C215, C285, C322, C324, C325
152 112-043474-R01 Chip capacitor / 0402,0.47uF±10%,10V,X5R, ROHS pcs 2 C80, C192
153 112-0434R0-R01 Chip capacitor / 0402,4P±0.25P,50V,C0G, ROHS pcs 3 C228, C309, C312
154 112-0435R0-R01 Chip capacitor / 0402,5P±0.25P,50V,C0G, ROHS pcs 2 C87, C118
155 112-043680-R01 Chip capacitor / 0402,68P±5%,50V,C0G, ROHS pcs 1 C314
156 112-043681-R01 Chip capacitor / 0402,680P±10%,16V,X7R, ROHS pcs 3 C57, C258, C260
157 112-043683-R01 Chip capacitor / 0402,0.068uF±10%,16V,X7R, ROHS pcs 4 C242, C243, C247, C259
158 112-0436R0-R01 Chip capacitor / 0402,6P±0.5P,50V,C0G, ROHS pcs 1 C131
159 112-0437R0-R01 Chip capacitor / 0402,7P±0.5P,50V,C0G, ROHS pcs 1 C122
160 112-0438R0-R01 Chip capacitor / 0402,8P±0.5P,50V,C0G, ROHS pcs 4 C32, C126, C145, C311
161 112-0439R0-R01 Chip capacitor / 0402,9P±0.5P,50V,C0G, ROHS pcs 2 C127, C128
162 112-043R50-R01 Chip capacitor / 0402,0.5P±0.1P,50V,C0G, ROHS pcs 2 C147, C219