Kirisun PT4200 Service Manual

PROFESSIONAL

TWO-WAY RADIO

PT4200

FM PORTABLE RADIO

SERVICE MANUAL

V060802

PT4200 SERVICE MANUAL

DANGEROUS!

Do not connect the AC power or DC power over 8.6V
with any connector or terminals of the radio. Otherwise it will
cause fire or electric shock or damage to the radio.

WARNING!

Do not reverse power connection.

It may cause harm to the radio if signal input on the
antenna connector is bigger than 20 dBm (100mW).

Do not turn on the power before the antenna or load
connection is completed.

If the antenna has been damaged, do not use the radio.
Damaged antenna may cause lightly burning on skin.

Though the radio is waterproof, it's better avoid putting it
in rain or snow, or any other liquid to ensure its life and
performance.

CONTENTS

Chapter 1 Introduction...................................................1

Chapter 2 Radio Overview and Function Keys .................1

Chapter 3 Electrocircuit ..................................................2

Chapter 4 Function Description and Parameter Setting......7

Chapter 5 Service Assemble and Disassemble.................9

Chapter 6 Radio Debugging..........................................11

Chapter 7 Major Specifications......................................13

Chapter 8 Trouble Shooting...........................................13

Chapter 9 KBC-58L Charger.........................................14

Appendix 1 Abbreviations..............................................14

Appendix 2 Spare List..................................................15

STATEMENT

Kirisun Electronic (Shenzhen) Co., Ltd owns the
copyright of KSP20 software. KSP20 software is free for
duplication.

Kirisun Electronic (Shenzhen) Co., Ltd owns the
copyright of the MCU software.

Kirisun Electronic (Shenzhen) Co., Ltd owns the
copyright of the radio outward/structure/circuit design.

Kirisun Electronic (Shenzhen) Co., Ltd owns the
copyright of this service manual. Publication without
authorization is prohibited.

Kirisun Electronic (Shenzhen) Co., Ltd owns the
trademarks KIRISUN

Appendix 3 Framework Component List ........................15

Appendix 4 Electrical Component List............................16

Appendix 5 Accessory List............................................21

Figure 1 PT4200 Top Board Position Mark Diagram.........22

Figure 2 PT4200 Bottom Board Position Mark Diagram....23

Figur3 PT4200 Schematic Circuit Pane Diagram............24

Figur4 PT4200 Schematic Circuit Pane Diagram............25

Figure 5 KBC-58L Schematic Circuit Diagram................26

PT4200 SERVICE MANUAL

Chapter 1 Introduction

1.1 Introduction

This manual applies to the service and maintenance of PT4200
series of FM mobile radios, and is designed for the engineers and
professional technicians that have been trained by Kirisun. In this
manual you can find all the information of product service. Kirisun
reserves the rights to modify the product structure and specification
without notice in order to enhance 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.

Read this manual before repairing the product.

1.2 Service Precautions

Safety

Avoid skin contacting with the antenna connector and PCB.

Do not reverse the power polarities.

Do not turn on the power before the antenna and load
connection is completed.

Do not use the radio if the antenna has been damaged.
Contacting the damaged antenna will cause lightly burning on the
skin.

Repairing service can only conducted by professional
technicians.

reconstructing the radio by the users without permission.

Wearing and tearing or any man-made sabotage such

as mechanical damage, burning or water leaking.

Product serial number has been damaged or the product

trademark is difficult to identify.

After the warranty expires, lifetime service is still
available. And we also provide service components to
service stations.

Chapter 2 Radio Overview and Function Keys

2.1 Radio Overview

Electromagnetism Interference

It's prohibited to use or repair the radio in the following

places:

Hospital, health center, air port

Any area with a potentially explosive atmosphere (where the air
contains gas, dust and smog, etc.), such as the storage or
transportation facilities.

Any area of dynamite or exploder.

Component Replacement

All the components used in repair service should be supplied by
Kirisun.

Other components of the same models available on the market
are not surely able to use in this product and we do not guarantee
the quality of the product using such components.

Please fill in a component application forms if you want to apply
for any components from Kirisun.

The following is one sample form that might be used to apply
for any components from Kirisun.

Component Application

Model Component No . Model/

PT4200-2 FET Q11 RD07MVS1 105-RD07MV-001 1

PT4200-2 Triode Q5 2SC5108 Y 104-SC5108-001 1

PT4200-2 Belt Clip KBJ-05 1

1.3 Service

All the Kirisun products are subject to the service warranty.

The main unit of the radio is guaranteed for service of 18 months. In
one of the following situations, charge free service will not available.

No valid service warranty or original invoice.

Malfunction caused by disassembling, repairing or

Specifications

Material

Serial

Quantity

No .

LED Indicator

Lights red while transmitting; lights green while receiving a

signal.

Flashes red while in low battery power.

Channel Selector

Rotate to select channel 1-16.

Power/Volume Switch

Turn clockwise to switch on the radio.

Turn counterclockwise till a click is heard to switch off the radio.

Rotate it to adjust the volume after turning on the radio.

PTT (Push-to-talk)

To make a call, press and hold the PTT button, then speak into

the microphone in normal voice.

Release the PTT button to receive a call.

Monitor Button

Press to disable the SQUELCH, and release to enable the

SQUELCH again.

Channel Annunciation Button

Press it in standby state, and the channel number will be
annunciated. If press and hold this button, and at the same time
switch on the radio again, the type of voice annunciation of channel
number will be changed.

Emergency Button

Press and hold this button for over 2 seconds to activate
warning tone. Press it again to exit the emergency alert state.

Note: When warning tone sounds, all of the buttons are
disabled.

Microphone/Speaker Jacks

For connecting external Microphone/Speaker.

1

PT4200 SERVICE MANUAL

Chapter 3 Electrocircuit

3.1 Frequency Configuration

Figure3.1 Frequency Configuration

This radio adopts the 2nd Mixer, the 1st IF 49.95MHz, the 2nd

IF 450kHz.

The receiver's first local oscillation is generated by the
frequency synthesizer. The second local oscillation is generated by
the crystal oscillator.

The transmitter signals are generated by frequency synthesizer.

The reference frequency of frequency synthesizer is generated
by TCXO.

3.3 Receiver (RX)

IC5 inner circuit and X3 (49.5MHz) compose the 2nd local
oscillator. The 2nd local oscillation (49.5MHz) and the 1st IF signal
(49.95MHz) are mixed at IC5 to generate the 2nd IF 450MHz .

After the 2nd IF signal is amplified and its amplitude is limited at
IC5, and then filtered at porcelain filter (CF1,450kHz), IC5
demodulates and sends out audio signals.

Figure 3.3IF System

Receiver Audio Signal Processing

IC6 and its peripheral circuit compose the receiver audio signal
processing circuit. IC5 sends audio signals to IC6-C for
amplification, and then to IC4 (CTCSS signaling filtering circuit) and
IC6-D. After the signals are amplified, de-emphasized, filtered at
IC6 and other cells, the HF (high frequency) and LF (low frequency)
will be eliminated, and the remaining 300-3000Hz audio is sent to
Q9 for amplification and then to volume potentiometer for
adjustment and finally sent to the audio amplifier (Ic8).

Figure 3.2 Receiver Illustration

The Receiver Front Terminal

Signals from the antenna pass through the RX/TX switch (D1,
D2, D4, D5); and then undesirable out-of-band signals will be
filtered out at the band pass filter (BPF) consisting of C227, L8, L15,
C70, C126, C218, L9, C217, L10, C127; then signals are amplified
at the low noise amplifier (LNA) consisting of Q20 and its peripheral
components.

The output from the LNA passes the BPF consisting of L5, L6,
L7, C228, C124, and C132 for filtering and then is sent to the first
grade frequency mixer (Q19).

MCU produces output voltages and alters the capacitance of
the variable capacitor diodes D21, D22, D23, D24, D26, D30 to
control the center frequency of the band-pass filter.

The First Frequency Mixer

After mixing the receiving signals and the first local oscillation
signals from the frequency synthesizer, the 1st IF signals

49.95MHz are generated. The first IF signals pass the crystal
filter (XF1, XF2) , which will filter the signals of adjacent channel
and those out of band.

IF Circuit

The 1st IF signals from the crystal filter are amplified at the first
IF amplifier (Q21), and then are sent to the IF processing IC (IC5,
MC3361). The IF IC consists of the 2nd frequency mixer, the 2nd
local oscillator, IF amplifier, limiter, phase frequency detector, and
noise amplifier.

Figure 3.4 Receiver Audio Processing

Squelch Circuit

Demodulation output from IC5 is sent to the selection frequency
noise amplifier, which consists of IC5 inner noise amplifier and
C107, R124, R152, C33, and C35, to be filtered off the noise. After
being amplified at Q7, noise is sent to D17 and D18 for wave
checking and then sent to MCU, which determines the noise
volume to control the squelch.

Audio Amplifier

IC8 and peripheral components construct the audio amplifier.

Receiving audio signals, voice indication signals, indication tone
signals and warning tone signals are collected for audio
amplification to drive the speaker. Warning tone has no volume
control.

When AFCO is at the high level, Q37, Q8, Q33, and Q38 will be
connected, and IC8 starts working and voice comes out from the
speaker.

Q36: Receiving audio signal switch

Q35: Warning tone switch

Q25: Indication tone switch

2

PT4200 SERVICE MANUAL

CTCSS Signal Filtering

The IC5 demodulated output audio signals may contain CTCSS
(continuous tone coded squelch system) and DCS (digital coded
squelch). The frequency spectrum of CTCSS/DCS is 2-250Hz. The
filtering circuit constructed by IC4 can filter out the signals out of the
CTCSS/DCS frequency spectrum to ensure MCU to decode
CTCSS/DCS more precisely.

3.2 Transmitter (TX)

Transmitter Amplifier

Figure 3.5 Amplifier and Antenna Switch Diagram

The modulated signals from VCO are amplified at Q2, Q3, and
Q12 and then are sent to Q11 for amplification. Q11 output power:

4.5W.

The Q11 and Q12 gate offset is controlled by APC circuit.
Changing gate-offset voltage can control the transmitter output
power conveniently.

APC (Auto Power Control)

Figure 3.6 APC Circuit

R167, R168, and R169 are the amplifier current checker; IC3A
is the sample amplifier of the amplification current; IC3B is the
power comparison amplifier.

If the transmitter output power is too big, the amplifier current
will increase, IC3A output will mount, IC3B output voltage decrease,
the offset voltage added to Q11 and Q12 will decrease, and then
the transmitter output power will decrease. Vice versa, such can
ensure steady transmitter output power in different working
circumstances.

MCU changes the input power to IC3B to set the power.

Transmitter Audio Signal Processing

amplified, the amplitude of them is limited, and are filtered, they are
sent to VCO together with CTCSS/DCS for modulation.

D13, D308, and Q24 constitute AGC circuit which decreases
signal amplitude to avoid signal distortion when MIC signal is too
big.

Q34 is the power switch of audio processing circuit. It supplies
power to IC7 only when in transmitting and it is controlled by MCU.

J2 is the external MIC socket. When external MIC is used, the
inner MIC will cut off automatically, but PTT will remain activated.

3.3 Frequency Synthesizer

Figure 3.8 Frequency Synthesizer

The radio adopts PLL (Phase Locked Loop) frequency
synthesizer.

The frequency synthesizer consists of standard oscillator,
voltage controlled oscillator (VCO), programmable frequency
demultiplier, phase comparator, and low pass filter.

Q14, L30, C120, C88, C142, C180, D8, and D9 constitute RX
VCO. D12 is the modulation circuit of VCO.

ICI (MB15E03) is PLL integrated circuit, including
programmable reference frequency demultiplier, programmable
swallowing frequency demultiplier, phase comparator, and charge
pump.

R244, c193, R202, R40, C207, R141, C205, R2, and C204
construct the low pass filter.

The standard frequency is supplied by X4 (TCXO, 13MHz).

The standard frequency fromTCXO (Temperature Control
Transistor Oscillator) are demultiplied by the programmable
reference frequency demultiplier at IC1 to acquire 5kHz or 6.25kHz
reference frequency (controlled by MCU according to the preset
channel frequency).

The oscillation frequency from VCO is sent to IC1, and
demultiplied by swallowing frequency demultiplier and compared
with reference frequency to acquire the error signals. Then pass the
low pass filter and are sent to VCO to change VCO oscillation
frequency to the preset value, and then VCO is locked.

N=FVCO/FR

N Frequency demultiplication times

FVCO VCO oscillation frequency

FR Reference frequency

Figure 3.7 Transmitter Audio Circuit

IC7 and the peripherals components construct the transmitter

audio processing circuit. After the audio signals from MIC are

3

Check Loss of Lock: When PLL is in loss of lock, IC pin14
sends out low level signals to MCU, which controls the transmitter
not to transmit and initiate warning tome.

Q6: Power filter to supply more pure power to reduce the noise
of the frequency synthesizer.

3.4 Voice Indication Circuit

The radio features voice indication, which is very useful at night
or in the environment of dim light.

IC15 is a voice memory chip which stores the voice indication of
channels, and every time you change the channel, the speaker will
sound voice annunciation of the current channel number. Press
voice annunciation key will repeat the voice annunciation of the
current channel number.

If the voice annunciation function has been set, press voice
annunciation key in the stand by mode and the speaker will
sound voice annunciation of the current channel number. If turn on
the radio again with the voice annunciation key pressed, the
voice type will be changed. Repeat turning on the radio with the
voice annunciation key pressed, the voice type will change in the
sequence Chinese Male--- English Male--- Chinese Female --­English Female ---- No Indication .

3.5 Power Supply

The radio is equipped with 7.4V, 1200mAh Li-Ion battery. The
battery supplies power directly to the transmitter amplifier circuit
(Q11, Q12) and the receiver amplifier (IC8). The power supply of
other circuits is the regulated 5V power.

IC12: 5V low voltage difference, micropower regulator, together
with Q10, and Q30 supply big current 5V power to the whole radio.

Q29: 5T switch, controlled by MCU.

5T: Supplies power for the front terminal of the transmitter.

Q31: 5R switch, controlled by MCU.

5R: Supplies power for the receiver RF amplification, mixing, IF
processing, audio signal processing.

Q32: 5C switch, controlled by MCU

5C: The 5V power controlled by power saving supplies power
for the frequency synthesizer.

3.6 MCU

PT4200 SERVICE MANUAL

Memorizer E2PROM AT24C08

Memorizes the radio channel data, CTCSS/DCS data, and

other data of function setting and parameter adjustment.

CTCSS/DCS Encoding and Decoding

CTCSS/DCS signals generated by MCU (output form pin5) are
filtered at R155, R156, C242, and C243, and then sent to VCO and
TCXO for modulation.

CTCSS/DCS signals from the receiver are sent to MCU(pin1)
for demodulation. MCU determines whether the signals contain the
same CTCSS/DCS as that set on the radio and decides whether to
turn on the speaker.

Power Adjustment

MCU P56 output is sent to APC part to control the transmitter
output power.

CTCSS

CTCSS (continuous tone control squelch system) is a squelch
control system modulated on carrier wave with continuous subaudio
frequency as pilot frequency. If a channel is set with CTCSS, only
when both the CTCSS of the receiver and that of the transmitter are
identical, communication is available, which avoids interference of
other signals.

39 groups of standard CTCSS frequency is available on the
radio, see Table 3.1.

CTCSS signals generated by MCU pass the low pass filter
consisting of RC to be filtered off the high frequency over 300Hz
and then are sent to VCO for modulation.

Figure 3.9 MCU Diagram

MCU controls the working of each unit of the radio to realize all

the radio functions.

Connects with the PC

Accesses the radio status data

Controls PLL to generate the receiving and transmitting local

oscillation frequency.

Accesses the current channel status.

Controls the LED status indication

Controls the power supply of each location

Checks the action of each function key

Generates CTCSS signals

Generates DCS signals

DCS decoding

Squelch check and control

Controls the content of voice indication

Table 3.1 CTCSS Frequency Table

.

No

FREQUENCY
(Hz)

1 67.0 131.8

2 69.3 136.5

3 71.9 23 141.3

4 74.4 24 146.2

5 77.0 25 151.4

6 79.7 26 156.7

7 82.5 27 162.2

8 85.4 28 167.9

9 88.5 29 173.8

10 91.5 30 179.9

11

12

13

14

15

16

17

18

19

20

94.8

97.4

100.0

103.5

107.2

110.9

114.8

118.8

123.0

127.3

No

.

21

22

31

32

33

34

35

36

37

38

39

FREQUENCY
(Hz)

186.2

192.8

203.5

210.7

218.1

225.7

233.6

241.8

250.3

4

PT4200 SERVICE MANUAL

DCS

DCS (digital code squelch) is a kind of continuous digital code

modulated with voice signals on carrier wave to control squelch.

83 groups of standard codes (positive and inverse code) are

available. See table 3.2.

DCS signals generated by MCU (PWM wave shape) pass the
low pass filter to be filtered off the high frequency over 300Hz and
then are sent to VCO and TCXO for modulation. VCO modulates
the high frequency of DCS signals; TCXO modulates the low
frequency of DCS signals.

CTCSS/DCS signals from the receiver are sent to MCU for
modulation. MCU determines whether the DCS encoding of the
receiving signals is identical with that set on the radio and decides
whether to turn on the speaker.

Table 3.2 DCS Encoding List

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

3.7 Semiconductor Component

MCU Description

Table 3.3 Microprocessor (M38034) Port Description

Port

No

.

1 TI P1 I

2 BUSY P2 I Busy s ignal in put

3 BATT P3 I Ba ttery vo ltage check

4 ALARM P4 I Alarm key check

5 TO P5 O QT/DQT output

6 BEEP P6 O Beep output/warning tone output

7

8

9

10

11

12

13

14

15

16

17 SELF P17 I Self programming

L: Model setting mode

18 CNVSS P18 I Connect 10K resistor with VSS

19 RST P19 I R e set i nput

20 INT0 P20 I P o w er ch eck in put

Name

PF1

ENC0

ENC2

ENC3

ENC1

NC

PTT

TXD

RXD

MONI

Pin
Name

I/O

QT/DQT signal input

P7 I Voice indication key check

P8 I Encoding input

P9 I Encoding input

P10 I Encoding input

P11 I Encoding input

P12 I Not used

P13 I [PTT] key input, connected with RXD

P14 O RS-232C input

P15 I RS-232C input

P16 I [MONI] key input

FunctionPin

5

21 ENC P21 I

-SEL

Connect the pull down resistor with

VSS .

22 XIN P22 I 7.3MHz Osc illator

23 XOUT P23 O

24 VSS P24 I

25 SHIFT P25 O

26 PABC P26 O

27 OSCSI P27 I

28 WNTC P28 O Wide/Narrow band contro l

H Wide L Narrow

29 PS P29 O PLL p ower s aving co ntrol H No rmal

working L Power saving

30 SDA P30 I/O EE PROM data wire

31 SCL P31 O EE PROM cloc k wire

32 UL P32 I PLL unlock che c k pin H Locked

33 DT P33 O PL L data output

34 CK P34 O PL L clock output

35 LE P35 O PLL IC en abl i n g pin H L atched

36 5MC P36 O Power control excep t CPU and

EEPROM L Open

37 AFCO P37 O

38 RX P38 O TX/RX VCO Se l e c tion H Rece iving

39 GLED P39 O Gree n indicato r contro l H Ligh t

40 RLED P40 O Re d indicato r contro l H Light

41 SAVE P41 O Battery power saving c o ntrol

H Power supply L Power saving

42 MUTE P42 O Squelc h contro l

H L Audio squelch

43 5RC P43 O

44 5TC P44 O

45 W588C P45 O

46 AC P46 O

47 DAOUT1 P47 O

48 DAOUT0 P48 O

49 DAOUT7 P49 O

50 DAOUT6 P50 O D/A output6

51 DAOUT5 P51 O D/A output5

52 DAOUT4 P52 O D/A output4

53 DAOUT3 P53 O D/A output3

54 DAOUT2 P54 O D/A output2

55 NC P55 O Not used

56 APC P 5 6 O

RX BPF tuning output

57 VCC P57 I CPU pow er 5V input

58 VREF P58 I Connected with VCC

59 AVSS I Conn ecte d with VSS

60 IF_SEL

resistor with VSS H 49.95 L 21.4

P59

P60

Encoding switch selection.

Earthing
Clock frequency shift H Open

Final power supply H Open

VCO crystal selection.

Connect the pull down resistor with

VSS H 13 L 16.8

L Loss of lock

Audio amplification power H:Open

Mic squelch

eceiving power control L Open

R

Transmitter power control H Open

Voice indication H Voice
annunciation of channel
Alert control H Control by voice
volume.

It must be in low battery

when in emergency alert state

D/A output 1

D/A output 0

D/A output 7 frequency regulated

output VCCN

TX Auto power contro l outpu t

I

IF selection. Connect the pull down

level

.

PT4200 SERVICE MANUAL

61 BUSY_V P61 I Voice indication of circuit busy check

62 DATA_V P62 I/O Voice indication data

63 SCLK_V P63 I/O Voice indication clock

64 NC Not used

3.4 Semiconductor Function Description

Posi

Type Function Description

IC1 MB15E03 Frequenc y synthesizer

IC4 NJM2904 APC Voltag e comparison , driv e

IC5 MC3361 Receiver' s 2n d loca l oscillation , 2n d I F

IC6 NJM2902 Receive r demodulatio n signa l

IC7 NJM2902

IC8 KIA6278F

IC9 AT24C08

function setting parameter,

IC10 M38034

IC11 PST9140NR

IC12 HT7150-1 Lo w voltag e differenc e, lo w powe r

IC15 W588A080 Voic e storag e I C

Q2 2SC5108 Transmitt er 1 st amplification

Q3 2SC3356 Transmitt er 2n d amplificatio n

Q4 2SC5108 VC O bufferin g amplifi er

Q5 2SC5108 VC O bufferin g amplifi er

Q6 2SC4617 VC O pow er filter

Q7 2SC4738 Nois e amplifier

Q9 2SC4617 Receiv er aud io signa ls amplification

Q10 2SC1623 5 V regulate d outp ut curre nt stretch er

Q11 RD07MVS1 Transmitter fina l pow er amp lifier

Q12 RD01MUS1 Transmitter pow er amp lifier driv e

Q17 DTA144EE AP C outp ut switc h

Q19 3SK318 Th e 1 st frequenc y mix er

Q20 3SK318 Receiv er H F amplifi er

Q21 KTC4082 Th e 1 st IF amplifier

Q22 DTC144EE Re d LE D driv e

Q23 DTC144EE Gree n LE D drive

Q24 2SK1824 Voic e indicatio n switch

Q26 DTC144EE 5 C switc h

Q29 KTA1298 5 T switc h

Q30 KTA1298 5 V regulate d outp ut curre nt stretch er

Q31 KTA1298 5 R switc h

Q32 KTA1298 5 C switc h

Q34 DTA144EE Pow er switc h of M IC amplificatio n un it

Q35 2SK1824 Aud io outp ut switc h of receiver.

Q36 2SK1824 Receive r aud io outp ut switc h

P64 I

amp lificati on, amplitude limit,

demodulation, noise amplification

am plification, filtering

MIC amplification , amplitud elimi

Receive raudi o amplifie

E2PROM , memor ychanne l frequenc ydata ,

Debugging state parameters

MCU

MCU rese tcircu it

consumption, and regulator

Cut off when in emergency alert state.

filterin

t,

g

r

Table 3.5 Diode Function Description

Posi

Type Function Description

tion

D1 MA77 Trans mitter an tenna s witch diode

D2 MA77 Trans mitter an tenna s witch diode

D3 HSC277 VCO output switch

D4 HSC277 Antenna switch

D5 HSC277 Antenna switch

D6 HSC277 VCO output switch

D7 HSC277 5V regulated output current stretcher

D8 HVC376B VCO oscillation variable capacitance diode

D9 HVC376B VCO oscillation variable capacitance diode

D12 MA360 VCO modulation diode

D14 HZU5ALL APC output voltage-limiting diode

D15 MA2S111 Loss of lock check diode

D16 MA2S111 VCO power filtering accelerating diode

D17 1N4148 Noise detector

D18 1N4148 Noise detector

D20 LED Green Receiving indication

D25 MA2S111 APC individual diode

D28 LED Red Transmitting indication

D29 LED Green Receiving Indication

Table3.6 XF1 XF2 Crystal Filter Features

Item Specified Value

Nominal center frequency 49.95MHz

Transmission bandwidth 7.5kHz or bigger within 3dB

40dB Barrage bandwidth 20.0kHz or smaller

Pulse 1.0dB or smaller

Insertion loss 3.0dB or smaller

Guarantee attenuation 80dB or bigger within fo-910kHz

Terminal resistance ---

Table 3.7 CF1 LTVPC450EB Features

Item Specified Value

Nominal center frequency 450kHz

6Db bandwidth 3.5kHz or bigger

50dB bandwidth 12.5kHz or smaller

Pulse 2.0dB or smaller within f0 4kHz

Insertion loss 6.0dB or smaller

Guarantee attenuation 35.0dB or bigger within f0 100kHz

Terminal resistance 2.0k

6

PT4200 SERVICE MANUAL

Figure 3.8 Semiconductor Component Packaging Illustration:

Chapter 4 Function Description and Parameter
Setting

4.1 Major Functions

4.1.1 16 Channels/15 Channels +Scanning Channel

The radio stores 16 channels including one scanning channel.

4.1.2 Scanning Function Control

If you switch the channel to channel 16, the radio is in the
scanning state. After starting scanning, it will pause when receiving
signals.

If you switch the channel to channel 1-15, the scanning function
is inactivated.

4.1.2.1 Carrier Wave Control Scanning

If the radio scanning setting is carrier wave control
scanning , switch the channel to channel 16 to set the radio in the
scanning working mode.

Each channel can be set the scanning added/deleted function
solely: if the setting is scanning added, the channel will be added in
the scanning list; if the setting is scanning deleted, the channel will
not be in the scanning list.

The radio starts scanning from channel 1 to 16 repeatedly in the
consequence of the scanning list. If signals are detected on a
channel ( if the channel is set with receiving signaling the carrier
wave must match the signaling), the radio pauses on that channel
and will restarts scanning 0.5~5 seconds (scanning delay time) after
the signals disappear.

If you switch the channel to channel 1~15, scanning is
inactivated.

4.1.2.2 Time Control Scanning

If the radio scanning setting is time control scanning , switch
the channel to channel 16 to set the radio in the scanning working
mode.

Each channel can be set canning added/deleted function solely:
if the setting is scanning added, the channel will be added in the
scanning list; if the setting is scanning deleted, the channel will not
be in the scanning list.

The radio starts scanning from channel 1 to 16 repeatedly in the
consequence of the scanning list. If signals are detected on a
channel (if the channel is set with receiving signaling the carrier
wave must match the signaling), the radio pauses on that channel
and will restarts scanning 0.5~5 seconds (scanning delay time) after
the signals disappear.

If you switch the channel to channel 1~15, scanning is
inactivated.

7

4.1.2.3 Priority Channel

You can set one channel in the scanning list as the priority
channel, which has the highest priority during scanning. The radio
scans the first non-priority channel in the canning list and then
scans the priority channel, the next non-priority channel in the
scanning list, and then the priority channel again. It goes on
scanning in such sequence.

4.1.2.4 Revert Channel

If you press PTT button when the radio is in scanning state, the
radio will transmit on the revert channel , which has 6 types:

Selected channel: The first channel in the scanning list.

Selected channel + current channel: If the radio is in the state of
scanning pause, it will transmit on the current communication
channel. Otherwise it will transmit on the first channel in the
scanning list.

Priority channel: The radio will always transmit on the priority
channel set in the scanning list when pressing PTT.

Priority channel + current channel: If the radio is in the state of
scanning pause, the radio will transmit on the current
communication channel. Otherwise it will transmit on the priority
channel in the scanning list.

Last called channel: The last channel that received signals.

Last called channel + current channel: If the radio is in the state
of scanning pause, the radio will transmit on the current
communication channel. Otherwise it will transmit on the last called
channel.

The current communication channel is the channel on which the
radio pauses in the 4 following situations:

1 When the radio receives signals and does not restart
scanning, the radio will stay on the current channel.

2 The radio will stay on the current channel during 0.5~5
seconds (scanning delay time) after signals disappear.

3 The radio will stay on the current channel when pressing
the PTT during scan.

4 After releasing the PTT to end transmitting, during the
preset transmitting dwell time, the radio will stay on the current
channel. After the preset transmitting dwell time 0.5~5 seconds, the
radio will restart scanning again.

4.1.2.5 Retrace Period

If the priority channel has been set in the scanning list and
retrace period is also set, when the radio receives signals on a non­priority channel and pauses scanning, it will retrace the priority
channel in a certain period (0.3~5s). If signals are detected on the
priority channel, it will stay on the priority channel; if no signal is
detected on the priority channel, it returns to the original channel it
stays on.

4.1.3 CTCSS/DCS

CTCSS/DCS can realize selective calls and group calls. On the
same channel, only the two parties whose CTCSS/DCS are
identical can communicate. CTCSS/DCS signaling code on the
channel is preset.

4.1.4 TOT

The purpose of the time-out timer is to prevent any single
person from overlong using a channel to transmit and affecting the
whole group communication.

If the radio transmits longer than the preset TOT time limit, the
radio will stop transmitting and warning tone sounds. To stop the
warning tone, release the PTT button. Press the PTT again you can
resume transmitting.

4.1.5 Auto Power Saving

When no signals are being received or no operations are being

PT4200 SERVICE MANUAL

conducted for over 10 seconds, the battery power saving will be
activated. When it is receiving signals or in operating state, battery
power saving is inactive.

4.1.6 Low Battery Warning

When the battery power appears low, the indicator flashes. If
the battery power is lower than the preset value during transmitting,
the status indicator flashes red. When the speaker sounds warning
tone, the radio will stop transmitting.

4.1.7 Monitor

When no signals are being received, the radio squelch circuit
mutes the speaker.

Press the MONI key to cut off the squelch control circuit, and
you will hear noise from speaker (no mater whether there are
signals). Such operation is very useful when you want to adjust
voice volume or receive weak signals (to avoid voice intermittence
when in weak signals).

When you press the MONI key, the green indicator lights, and
the radio is in the state of monitoring.

4.1.8 Busy Channel Lockout

If busy channel lockout has been activated, transmitting
signals is prohibited on the busy channel. If you press the PTT to
transmit on the busy channel, the speaker will sound busy channel
lockout tone, and you cannot transmit signals.

4.1.9 PC Programmable

You can program the radio functions and adjust some
parameters by PC programming software KSP20.

4.1.10 Wired Clone

The radio can transfer the stored data to another radio of the
same mode by a specified cable.

4.1.11 Squelch Level Selection

The purpose of the squelch is to mute the speaker noise when
no signals are received or the signals are weak. When the squelch
is activated, you can hear noise from the speaker; when the
squelch is inactivated, you will not hear noise form the speaker.
Selecting the squelch level is to select which the signal strength
level is strong enough to enable the squelch or weak enough to
disable the squelch. Over high squelch level will make the radio
unable to receive signals efficiently when signals are weak; over low
squelch level will make the radio communication affected by noise
or other irrelevant signals. The squelch level has 0-9 options.

4.1.12 Beep Tone

This option controls power on tone, channel busy tone and TOT
tone.

4.2 Parameter Setting (PC Mode)

The radio parameters have been programmed in the factory.
The user can program the radio parameters such as working
frequency, channels, CTCSS/DCS, auto scanning. We designed a
user friendly and convenient Chinese/English programming
software KSP20 for users to set parameters on the radio. The
programming steps are as follows:

a.Install the programming software KSP 20 on the computer.

b.Connect the radio to the computer serial port with the
specified programming line (KSPL02). See Figure 4.1

a.Turn on the computer power.

b.Turn on the radio power.

c.Click the KSP20 program to run the programming software.

d.Click the Tools in the KSP20 pull-down menu, and click

Read Data to read the radio parameters into the computer;
click Write Data to transfer the PC programming parameters
into the radio.

e.You can program the following parameters with the KSP20

software.

1) The RX and TX frequency of each channel.

2) The receiving and transmitting signaling of each channel.

3) Busy channel lockout option.

4) TOT

5) Squelch level option.

6) Power saving option.

7) Beep tone option.

8) Monitor mode option.

9) Scan mode option.

10) Scan the revert channel option.

11) Scan the priority channel option.

For more details, please refer to the Help in the KSP20

software.

Notice:

1) Turn off the radio before connection.

2) When the radio is being read data, the indicator lights green
and it's prohibited to press the PTT button; when the radio is being
written data, the indicator lights red.

3) Before the first time editing, you should read data form the
radio and backup the data.

4) If the radio cannot work normally after being written in with
the editing data, open the data backup and rewrite the backup into
the radio.

5 )Model information is important radio data and is prohibited to

modify.

6) After programming, you need to turn on the radio power
again to make the radio resume the normal work.

4.3 Computer Test Mode:

Connect the radio to the radio communication port with the

specified programming line (KSPL02). See Figure 4.1.

Warning: Before enter the computer test mode, connect a HF
load of 50 to the radio antenna connector or connect the radio to a
comprehensive test device.

Under the computer test mode, you can modify the following
parameters with KSP20 programming software:

1) Frequency tuning;

2) Transmitting power;

3) Low voltage threshold;

4) The 9th squelch level;

5) The 3rd squelch level;

6) Sub-audio wide band modulation degreed;

7) Sub-audio narrow band modulation degreed;

8) Wide band sub-audio center.

PC
(RS232 Serial

Port)

Programming
Line (KSPL02)

Radio
(Speaker/ Mic
Socket)

4.4 Wired Clone (It can be prohibited by programming

software)

When the wired clone function is activated, the radio can enter
the wired clone mode. After entering the wired clone mode, the

8

PT4200 SERVICE MANUAL

radio will not exit it automatically and you have to turn on the radio
again to enter the user's mode. Operating steps are as follows:

1) Turn on the radio with the MONI key pressed, and 2 seconds
later the red light flashes twice and two beep tones sound, and then
the radio enters the wired clone mode.

2) Press the PTT button on the host radio to activate/inactivate
the wired clone mode on the sub radio. But the wired clone mode of
the host radio will not be changed. When pressing the PTT button,
the green light flashing twice and one beep mean to activate the
clone mode; the red light flashing twice and two beeps mean to
inactivate the clone mode. When entering clone mode, the default
setting of the sub radio receiving data is to prohibit wired clone
mode.

3) Press the MONI key, red light flashes, and it starts cloning.
After cloning is finished, the red light turns dim.

Note: You can activate/inactivate the wired clone mode. Short
circuit the two SELF terminals, enter the model setting mode and
then the manually adjustment function and wired clone function will
become active automatically. If you press the MONI key at this
moment, the wired clone function will be prohibited.

You can also activate/inactivate the wired clone mode by PC
programming software.

If the wired clone function has been prohibited, it cannot enter
the wired clone mode. The wired clone mode has been prohibited in
the factory.

The cloning data includes all the data in 4.2 Parameter
Setting but the adjustment parameters in 4.3 Computer Test
Mode .

Cloning Line

Host Radio

Sub Radio

5.2 Removing and Installing the Belt Clip

To remove the belt clip, use your nail or a tool to lift the metal
spring piece in the belt clip from the topside, and then pull the belt
clip away from the radio.

To install the belt clip, match the upper head of the belt clip with
the glides on the rear of the battery, and then press the belt clip
downwards to lock it in place. (See Figure 5.4)

Figure 5.4

5.3 Removing the Casing from the Chassis

1) Remove the knobs;

2) Remove the two knob nuts and the antenna nut;

3) Remove the two cross head screws that fix the top cover at

the top;

4) Remove the two cross head screws that fix the aluminum

alloy frame at the bottom;

5) Pull the aluminum alloy frame out of the casing.

See Figure 5.5

Chapter 5 Service Assemble and Disassemble

The radio is a precision communication equipment. Please be

careful when assemble or disassemble the radio during service.

5.1 Removing and Installing the Battery

To remove the battery, push the latch upwards and remove the

battery away from the radio. (See Figure 5.1)

Figure 5.1

To install the battery, match the tow bulges at the bottom of the
battery with the corresponding grooves at the radio aluminum alloy
frame and insert it in. Then press the upper end of the battery till the
latch secure.

Figure 5.5

5.4 Remove the Chassis from the Main Board

1) Remove the screw of from the PCB;

2) Melt the solder at the antenna point with a electric soldering

iron and take off the main board;

3) Take away the two screws and the antenna connector.

See Figure 5.6.

Figure 5.2

9

Figure 5.3

Figure 5.6

5.7 Exploded View

41

42

43

44

40

39

38

37

36

35

34

33

32

31

21

30

20

PT4200 SERVICE MANUAL

29

28

27

26

25

24

23

22

18

17

16

15

19

NO.

MATERIAL NO.

21

202-000558-009

20

204-006800-006

19

202-000558-001

18

201-000558-008

17

202-000558-003

16

201-000558-002

15

201-000558-003

14

203-003208-009

13

203-000558-002

12

203-000558-001

11

202-000558-004

10

202-000558-005

9

201-000558-009

8

204-000558-001

7

121-100000-007

6

201-000558-001

5

401-0101E1-057

4

203-000558-004

3

202-000558-002

2

201-000558-004

1

401-0101E1-058

DECRIPTION

MIC CAP

MIC WASHER

MIC COVER

EMERGENCY BUTTON COVER

EMERGENCY BUTTON

VOLUME KNOB

CHANNEL KNOB

KNOB CIRCLIP

SWITCH NUT

ANTENNA NUT

arial

arial

LIGHT PIPE

SPEAKER WATERPROOF NET

SPEAKER

FRONT COVER

LOGO LABLE

SPEAKER SPRING

PTT BUTTON

PTT BUTTON FRAME

MODEL LABLE

QTY

1

1

1

1

1

1

1

2

2

1

2

1

1

2

1

1

1

2

1

1

1

44

204-000558-003

43

301-20080G-001

42

401-0201C1-006

41

204-000558-002

40

301-25060J-001

39

201-000558-014

38

203-000558-005

37

201-000558-005

36

203-003208-004

35

203-004200-001

34

204-000558-005

33

203-000558-007

32

202-000558-007

31

202-003208-007

30

302-17040G-001

29

203-003208-002

28

202-000558-008

27

201-000558-007

26

202-000558-006

25

204-003208-005

24

204-000558-004

23

22

301-20040G-001

14
13
12
11
10
9
8
7
6
5
4
3
2
1

AL LABLE

M2 SCREW

AL LABLE

WATERPROOF LABLE

M2.5 SCREW

PUSH FASTENER

PUSH FASTENER SPRING

TOP COVER

arial

Aluminum bracket

AL ALLOY LABLE

ANTENNA HEAD

WATERPROOF WASHER

INSULATING WASHER

M1.7 SCREW

arial

POSITIVE TERMINAL WASHER

POSITIVE TERMINAL FRAME

WASHER

WASHER

WASHER

PCB BOARD

M2 SCREW

1

2

1

1

2

1

1

1

1

1

1

1

1

1

1

1

2

1

1

2

2

1

11

10

PT4200 SERVICE MANUAL

Chapter 6 Radio Debugging

Before test/debugging, make sure all the equipments have
been well connected to the ground.

Before test/debugging, make sure the antenna output terminal
has been connected properly to the corresponding devices and load.

The transmitter output must pass RF power attenuator before
being connected to the standard signal source/ frequency deviator/
frequency spectrum.

When testing the receiver, make sure not to conduct
transmitting operation.

When in debugging/testing/service, make sure static free
measures for human body and equipments.

6.1 Service Equipment and Software.

The following equipments and software in Table 6.1 are
necessary for the service and test of the radio.

Table 6.1 For Test and Service Equipment and Software

6.2 Debugging Items

During the course of maintenance, the radio needs to be tested
and debugged after replacing components. Some certain radio
parameters can be modified (computer mode) with our KSP 20
programming software. The modifiable parameters are as follows:

1) Frequency difference

2) TX power

3) Low battery power warning threshold

4) Squelch level

5) CTCSS frequency deviation

6) DCS frequency deviation

Debugging Procedures

a.Enter the computer test mode. Access method refers to the
instruction in 4.2 parameter setting.

b.Select the Test Mode option to enter the computer test
mode.

c.Select the options that you want to adjust and adjust the
parameters on the computer.

d.After adjustment, exit the computer test mode.

6.3 Debugging

6.3.1 VCO Modification

Turn off the power saving mode. Set the frequency at the low
frequency (see Table 6.2). In receiving status, test the PD power
with the digital multimeter. Adjust the trimming capacitor C180 to
make the PD power at 1V 0.1V.

Set the TX frequency at high frequency (see Table 6.2), press
the PTT button, test the PD power with the digital multimeter. The
power should lower than 3.5V.

The equipments in item 6, 7, 8, 10, 11, and 12 can be replaced by a
comprehensive test instrument.

Figure 6.1 External Speaker/Mic Connector Defi ni ti on

Table 6.2 Radio H/I/L Frequency

Low Frequency Medium Frequency High Frequency

PT4200(1) 420.125MHz 445.125MHz 469.975MHz

PT4200(2) 400.125MHz 425.125MHz 449.975MHz

6.3.2 PLL Frequency Adjustment

Under the computer test mode, select frequency tune
option and click adjustment to enter. Adjust the TX frequency
among 0~255 to the specified value. (Frequency error should less
than 200Hz.)

6.3.3 TX Frequency Adjustment

Under the computer test mode, select high power, low
frequency and click adjustment to enter. Adjust the TX power
among 0~255 to 4W. And watch the working current and make sure
it not higher than 1.5A.

Adjust high power, medium frequency , high power, high
frequency to set the TX power at 4W.

6.3.4 TX Low Power Warning

Adjust the power to 6.8V.

Under the computer test mode, select the low power
threshold , and click adjustment to enter. Adjust the figure
among 0~255 to make the red light flash.

6.3.5 Frequency Deviation Adjustment

Input 100mV, 1000Hz audio signals from the radio MIC, and
adjust the potentiometer VR2 to set the TX frequency deviation at

2.2kHz.

11

PT4200 SERVICE MANUAL

6.3.6 DCS TX Signal Wave Shape and Frequency

Adjustment

Under the computer test mode, select DCS wide band
modulation and click adjustment to enter Adjust the
potentiometer VR1, and watch the demodulation signals. The wave
shape should be smooth (close to square wave) and then adjust the
figure to set the frequency deviation at 0.35kHz.

6.3.7 CTCSS Frequency Deviation Adjustment

Under the computer test mode, select CTCSS wide band
modulation , and click adjustment to enter. Adjust the figure to
set the frequency deviation at 0.35kHz.

6.3.8 Receiver Sensitivity

Repeat adjusting L9, L10, L6, and L5 to make the frequencies
at highest sensitivity.

6.3.9 Receiver Squelch Setting

Under the computer test mode, select the 9th squelch and
click adjustment to enter. Input the receiver with the signals of
1kHz modulation frequency, 3kHz frequency deviation, and ­117dBm level. Adjust the figure to make the green light flash.

Under the computer test mode, select the 1st squelch and
click adjustment to enter. Input the receiver with the signals of
1kHz modulation frequency, 3kHz frequency deviation, and 124dBm
level. Adjust the figure to make the green light flash.

6.4 Debugging

The above debugging refers to Table3, Table4, and Table 5.

Table 6.3 Voltage Controlled Oscillator (VCO)

Item

Sensit
ivity

Squel
ch
Activa
tion
Sensit
ivity

Test

Condition

CH: MF
CH:LF
CH: HF

RF OUT:

-116dBm
(0.35 V)

MOD:1kHz

DEV:

1.5kHz
(W/N)

Ch: RX
Center
Frequency

9th

RF OUT:

-117dBm

1st

RF OUT:

-124dBm

Test

Equipment

RF Audio
Signal
Generator

Oscillator

Audio
Voltmeter

Distortion
Test
Device

/Comprehe
nsive Test
Device

Test

Point

Speak
er

Conne
ctor

Adjustment

Part

Computer
Test Mode

Computer
Test Mode

Require

-ment

SINAD

12dB or
higher

Computer
Test Mode
After
adjustmen
t, squelch
activation
is normal.

After
adjustment,
squelch
activation
is normal.

Note

Item

Test

Condition

Setting

Locked

Power

Battery

Power:

7.5V

CH:RX

Frequency

CH:RX

Frequency

CH:TX Low
Frequency

CH:TX High
Frequency

Table 6.4 Receiver

Item

Test

Condition

Band
Pass

Filter

Ch: RX

Audio

center
frequency

RF OUT

Level

-53dBm
(501 V)

MOD:1kHz
DEV: 3.0

(kHz)
Audio

Load:16

Low

High

Test

Equipment

Digital

Multimeter

Test

Equipment

Spectroan­alizer/
Compreh

-ensive
Test
Device

RF Audio
Signal
Generator

Oscillator
Audio
Voltmeter

Distortion
Test Device

/Comprehe
nsive Test
Device

Test

Adjustment

Point

PD

C180 1.0V 0.1V

C181 1.0V 0.1V

Test

Adjustment

Point

Before

Computer

Mixing

Test

Speak
er

Conne
ctor

Part

Part

Require

-ment

Lower
than 3.5V

Lower
than 3.5V

Require

-ment

ModePass
Band
25MHz,

smooth

wave

Shape

(Turn the
volume
knob
clockwise)
Audio
power

0.3 W

Note

Adjust

-ment

Watch

Adjust

-ment

Watch

Note

Not
recom­mend

user

the
to

adjust

it!

Inner
speake
r power

1.2W

Table 6.5 Transmitter

Item

TX
Frequ
ency

DCS
Wave
Shape
(Balan
ce)

Power

Maxim
um
Modul
ation
Frequ
ency
Deviati
on

Modul
ation
Sensiti
vity

Test

Condition

CH: TX
Center
Frequency
AG:1kHz/
70mV

AG:1kHz/
7mV

Test

Equipment

Frequency
Meter/
Comprehe
nsive Test
Device

Oscillator /
Comprehe
nsive Test
Device

Power
Meter/
Comprehe
nsive Test
Device/
Ammeter

Frequency
Deviation
Meter/
Comprehe
nsive Test
Device

Test

Point

Anten
na

Adjustment

Part

Computer
Test Mode

Vr1

Computer
Test Mode

Require

-ment

Within

±

200Hz

Wave
shape is
close to
smooth
square
wave.

Adjust to
4W

Adjust to

±

4.5kHz

Checking
frequency
deviation:

2.2kHz~

3.6kHz

Note

Within

±

200H

z

±

200

Hz

12

PT4200 SERVICE MANUAL

Item

CTCSS
DEV

DCS
DEV

Battery
Power
Warnin
g

Test

Condition

CTCSS:
67Hz

DCS
023N

Battery
Terminal:

6.8V

Test
Equipment

Frequenc
y
Deviation
Meter/
Compreh
ensive
Test
Device

Test

Point

Anten
na

Adjustment

Part

Computer
Test Mode

Require

-ment

Adjust

±

to 0.75kHz

Adjust

±

to 0.35kHz

After
adjustment,
the indicator
flashes.

Note

±

±

50Hz

50Hz

Chapter 7 Major Specifications

7.1 General Specification

Model PT4200

Frequency (1)420~470MHz (2)400~450MHz

Modulation 11K F3E

Number of Channels 16(15+S)

Channel Spacing 12.5 kHz

MF 1st MF 49.95 MHz 2nd MF 450kHz

Working Voltage 7.5V

Working Temperature -25 ~ +55

Antenna Impetance 50

Mic Impedance 2k

Battery (Standard) Model KB-58A Li-Ion Battery DC 7.2V ,

1000mAh

Dimension (WXHXD) 56 mmx120 mmx29 mm

Weight 235 With battery and Antenna

7.2 Receiver

Available Sensitivity
(12dBSINAD)
Squelch Activation
Sensitivity
Receiver Surplus
Output
Modulation Receiving
Bandwidth
Adjacent Channel
Selectivity
Intermediation
Reject Ratio
Spurious Response
Reject Ratio
Audio Output
Power
Receiving Current
Sinking
Standby Current
(Average)

0.35 V

0.20 V @level 3 squelch

-40dB

3.5kHz

60dB

60dB

70dB

500mW @distortion 5% 4

250mA

25mA

RF Power

Frequency Stability

Maximum Modulation

Frequency Deviation

Modulation Sensitivity

Modulation

300~3000Hz

Adjacent Channel

RF Power

Spurious and

Harmonics

Residential Frequency

Modulation

Transmitting Current

Sinking

Chapter 8 Trouble Shooting

No

.

PROBLEM

No
display
after

1

switching
on the
radio.

PLL is
unlocked.
(Beep

2

sounds)

Cannot
talk to or
hear

3

other
group
members.

4

Cannot
receive
signals.

A. Battery power may be insufficient. Recharge or
change the battery pack.

B. The power switch is broken, and please change it.

C. The CPU is broken, and please change it.

D.The regulator IC12 is broken, and please change
it.

A. The PLL crystal oscillator C4 is broken, and please
change it.

B. The oscillatingtube is broken, and please change it.

C. The oscillatingtube is broken, and please change it.

A. Make sure the two communication radios are
using the channel of the same frequency.

B. Make sure the CTCSS/DCS tone is the same as
that of your group members.

C. Out of the effective communication range.

A. The antenna is not well connected, and please
screw the antenna again until secure.

B. The sensitivity is too low and minitrim L9, L10, L7,
L6, and L5.

C.HF amplifier Q20 is broken, and please change it.

D. The squelch level is too high and the squelch
cannot be activated. Reset the squelch level with a
computer.

E. Mixer tube Q19 is broken, and please change it.

F. MF processing chip IC5 is broken, and please
change it.

4.0W @7.5V DC

2.5kHz

2.5x10

-6

16mV

3%

-60dB

-70 dB

-40 dB

1.8A @ 7.5V DC

SOLUTION

13

No

.

PROBLEM

The

indicator

lights red

when in

transmitti

5

ng but no

voice can

be heard.

PT4200 SERVICE MANUAL

SOLUTION

A. The power amplifier tube Q11 is broken and
there is no power output and please change it with
a new tube.

B. The microphone is broken, and please change it
with a new one.

C. The operational amplifier IC3 is broken, and
please change it with a new one.

The

indicator

lights

green

when in

6

receiving

but no

voice can

be heard.

Cannot
program
the radio

7

parameter
s
normally.

A. The speaker is broken, and please change it
with a new one.

B. The audio amplifier IC8 is broken and please
change it with a new one.

C. The switch tube Q36 and Q35 is broken, and
pleas change it with a new one.

D. The operational amplifier IC6 is broken, and
please change it with a new one.

A. Make sure the programming cable is well
connected.

B. The computer RS-232 serial port output is
unmoral, and please fix the computer.

C. The MIC is not well connected with the SPK
socket. Check the socket and if it is unable to work
normally please change it with a new one.

Chapter 9 KBC-58L Charger

9.1 Charger Specifications

A) Idling Input Current: 30mA

B) Charging Terminal Maximum Idling Voltage: 8.8V

C) Constant current charging: 200 270mA

D) Maximum Charging Time: 7 hours

E) Maximum Charging Voltage Limit: 8.45 0.1V

9.2 Charging and Charging Indicator

A) When DC inputs power voltage 14~20V, the indicator lights
yellow.

B) When the battery is inserted into the charger, the red and
yellow indicator lights. (The battery power is lower than 8.1 0.1 V. )
(When the voltage is lower than 6.0V, the red indicator become light
slowly after about 20 seconds.)

C) When the battery voltage is lower than 8.1 0.1 V, the
charger charge the battery with constant current. (Charging current
is 200 270mA. It needs 3~4 hours to charge a battery that has
been discharged completely.)

D) When the battery voltage is higher than 8.1 0.1 V, the
charging current will decrease gradually; when the battery voltage is

8.2 8.4V, the charging current will decrease quickly; when the
battery voltage is 8.4 8.5V, the charging current will close to zero
(then the charger begins constant voltage output) and charging
stops. This course takes about 2~3 hours.

E) When the battery voltage is 8.2 8.4V, the red, yellow and
green indicator lights. When the battery voltage is 8.3 8.5V, the
red indicator becomes dime and the green and yellow indicator light.

LED red: Charging indication

LED yellow: Power indication

LED green: Charging completion

Note: After putting the battery pack that has been discharged
completely into the charger, its red indicator needs about 1~2
minutes to turn light.

Appendix 1 Abbreviations

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

2

E PROM electrically 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

14

Appendix 2 Spare List

No.

Material Serial No.

201-000558-002

1

201-000558-003

2

201-000558-005

3

201-000558-006

4

202-000558-001

5

203-000558-001

6

203-000558-002

7

203-000558-005

8

203-003208-002

9

203-003208-004

10

301-20040G-001

11

301-20080G-001

12

301-25060J-001

13

302-17040G-001

14

102-MC3361-R01

15

103-L190YG-R01

16

103-MHC190-R02

17

104-MT717T-001

18

104-TA1298-R01

19

105-RD01MU-R01

20

105-RD07MV-R01

21

106-RD835E-001

22

108-455C24-R01

23

108-CF450H-R01

24

108-XF4995-R01

25

110-110473-R01

26

110-110683-R01

27

110-220103-008

28

121-200000-001

29

122-113M00-001

30

122-17M300-R01

31

122-249M50-001

32

124-050000-005

33

124-050000-R04

34

603-0W558A-001

35

PT4200 SERVICE MANUAL

Name/Specification

PT558 volume knob / PC+ABS,black

PT558 encoder knob / PC+ABS,blak

PT558 upper cover / PC+ABS,black

PT558 latch / PC+ABS,black

PT558 Earpiece-Mic jack panel cover / black silica gel(enhanced elasticity)hardness70

PT558 antenna nut£¬brass£¬black passivation

PT558 witch nut£¬brass£¬black passivation

PT558 latch spring, carbon spring steel wire¡Ó0.35£¬nickle plating

PT3208 positive terminal£¬phosphorus copper gold plating

PT3208 negative terminal£¬phosphorus copper gold plating

Woven belly-tooth screw,M2.0x4.0 flat round cross head, nickle plating

Woven belly-tooth screw,M2.0x8.0 flat round cross head, nickle plating

Woven belly-tooth screw,M2.5x6.0 flat round cross head,black zinc plating

Self-tapping screw,¦Õ1.7x4.0 flat round cross head nickle plating

IF(MF) modulation IC/MC3361BP,lead-free

Chip LBD/ 0603,green,CL-190YG-CD, lead-free

Chip LBD/ 0603,red,HSMH-C190,lead-free

Chip triode / FMMT717TA

Chip triode / KTA1298(Y),lead-free

Chip FET(field-effect transistor)/ RD01MUS1,lead-free

Chip FET(field-effect transistor)/ RD07MVS1,lead-free

Carbon-film encoder switch / RD835E-GA1-16C-0F01 18mm BAND HONGHUA

Plug-in phase frequency detector/ JTBM455C24,lead-free

Plug-in porcelain filter/ LTM450HT,450kHz¡À3kHz,lead-free

Plug-in IF filter / 49.95MHz 7.5KHz,U-5*2,lead-free

Chip trimming resistor/ MVR22HXBRN473,47K 25%,B Linear,lead-free

Chip trimming resistor/ MVR22HXBRN683,68K 25%,B Linear,lead-free

Volume switch / RD810S-JA1-A103-0C61

MIC / B6027AP402-65

Chip transistor / 13MHz 2.5PPm

Chip crystal resonator/ CSTCR7M30G53-R0,7.3M,lead-free

Plug-in crystal oscillator/ 49.5MHz 10PPM,UM-1

2.5mm Eearphone socket/ SP/MIC,EJ-2507-CCPA

3.5mm MIC socket / SP/MIC,ST-212,lead-free

Voice recording IC IC / W588A080,binding

Position

PCB, antenna head, negative
terminal screw

Aluminium alloy bracket fixing

Upper cover fixing

Positive terminal screw

IC5

D20, D29

D28

Q8, Q30

Q29, Q31, Q32

Q12

Q11

SW2

L57

CF1

XF1, XF2

VR2

VR1

SW1

MIC1

X4

X2

X3

J1

J2

Ic15

Quantity

1

1

1

1

1

1

2

1

1

1

11

2

2

1

1

2

1

2

3

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Appendix 3 Framework Component List

No. Material Serial No. Description Position Quantity Note

Plastic

1

201-000558-001

2

201-000558-002

3

201-000558-003

4

201-000558-004

5

201-000558-005

6

201-000558-014

7

201-000558-007

8

201-000558-008

9

201-000558-009

Metal

10

203-000558-007

11

203-000558-001

12

203-000558-002

Casing,PC+ABS,black

Volume switch, PC+ABS,black

Channel knob, PC+ABS,black

PTT button frame, PC+ABS,black

Upper cover, PC+ABS,black

Latch, PC+ABS,black

Positive terminal chassis, PC+ABS,black

Alert button frame, PC+ABS,black

Light guide, PMMA, transparent

Antenna holder,brass nickle plating

Antenna nut brass black passivation

Switch nut brass black passivation

1

1

1

1

1

1

1

1

1

1

1

2

2 nuts inlaid

15

PT4200 SERVICE MANUAL

203-003208-009

13

203-003208-002

14

203-003208-004

15

203-004200-001

16

203-000558-004

17

203-000558-005

18

Rubber

19

202-000558-001

20

202-000558-002

21

202-000558-003

22

202-000558-004

23

202-000558-005

24

202-000558-006

25

202-000558-007

26

202-000558-008

27

202-000558-009

Mechanical Parts

28

204-000558-001

29

204-006800-006

30

204-000558-002

31

204-000558-003

32

204-000558-004

33

202-003208-007

Screws & Nuts

302-17040G-001

34

301-20040G-001

35

301-20080G-001

36

301-25060J-001

37

Knob retaining ring stainless steel 0.18THK

Positive terminal phosphorus copper gold plating

Negative terminal phosphorus copper gold plating

Aluminum bracket

Speaker contact spring,carbon spring steel wire 0.25 gilt

Latch spring,carbon spring steel wire 0.35 nickle plating

Earpiece-Mic jack panel cover£¬black silica gel(enhanced elasticity)£¬hardness70

PTT button£¬black silica gel£¬hardness50

Alert button£¬orange silica gel (enhanced elasticity)£¬hardness60

Switch water-proof gasket£¬black silica gel£¬hardness60

Antenna water-proof gasket£¬black silica gel£¬hardness60

Waterproof gasket£¬black silica gel£¬hardness60

Waterproof gasket£¬¡¡black silica gel(enhanced elasticity)£¬hardness40

Negative & positive terminal cushion£¬black silica gel£¬hardness40

Mic case£¬orange silica gel£¬hardness40

Speaker waterproof net,black waterproof cloth

Mic cushion,dustproof net£¬black

Waterproof spacer£¬PORON£¬black£¬self-adhesice¡£0.8THK

Aluminium alloy sticker 1£¬PVC black£¬self-adhesive 0.3THK

Potentionmeter cushion£¬PVC transparent£¬self-adhesive 0.35THK

Thermally conductive insulator, thermally conductive rubber,2*6*9 blue

Self-tapping screw,¦Õ1.7x4.0 flat round cross head nickle plating

Woven belly-tooth screw,M2.0x4flat round cross head, nickle plating

Woven belly-tooth screw,M2.0x8flat round cross head, nickle plating

Woven belly-tooth screw,M2.5x6 flat round cross head, black zinc
plating

Positive terminal screw

PCB£¬antenna head£¬negative
terminal screw

Aluminium alloy bracket fixing

Upper cover fixing

Under FET

Refer to PT3208

2

Refer to PT3208

1

Refer to PT3208

1

1

2

1

1

1

1

2

1

1

1

2

1

1

1

1

1

2

1

1

11

2

2

Refer to PT6800

Refer to PT3208

Refer to PT3208

Refer to PT3208

Appendix 4 Electrical Component List

No.

Material Serial No.

1

101-005583-004

2

102-9140NR-001

3

102-A6278F-001

4

102-AT2408-001

5

102-B15E03-001

6

102-HT7130-001

7

102-HT7150-001

8

102-M2902V-001

9

102-M2904V-001

10

102-M38034-001

11

102-MC3361-001

12

103-00MA77-001

13

103-0MA360-001

14

103-1SS372-001

15

103-A2S111-001

16

103-DAN222-001

17

103-HSC277-001

18

103-HVC350-001

19

103-HVC376-001

20

103-HZU5AL-001

21

103-IN4148-001

22

103-L190YG-001

23

103-MHC190-002

24

104-A144EE-001

25

104-C144EE-001

26

104-KRX102-001

Component Name/Specification

PT558PCB / Mainboard,PT558N-060228

Reset IC / PST9140NR

KIA6278F,AUDIO,AMP

Memory IC / AT24C08N-10SI2.7

PLL IC / MB15E03SL,PLL,16-PIN,SSOP

Regulator IC / HT7130-1,SOT-89

Regulator IC / HT7150-1

Operational amplifier / NJM2902V,OP-AMP

Operational amplifier/ NJM2904V,OP-AMP

MCU / M38034M4H-284HP

IF(MF) modulation IC / MC3361BP

Chip HF switch diode / MA77,0805

Chip variable capacitor diode / 0805,MA360(PANASONIC)

Chip switch diode / 1SS372(TOSHIBA)

Chip switch diode / 0603,MA2S111(PANASONIC)

Chip switch diode / DAN222,(ROHM)

Chip diode / Waveband switch,HSC277(HITACHI)

Chip varialble capacitor diode / 0603,HVC350B(HITACHI)

Chip varialble capacitor diode / HVC376B

Chip regulator diode / HZU5ALL(HITACHI)

Chip diode / IN4148

Chip LBD / 0603,green,H19-21SYGC

Chip LBD/ 0603,red,19-21SURC/S530-A2/TR8

Chip triode / DTA144EE(ROHM)

Chip triode / DTC144EE(ROHM)

Chip triode / KRX102U,with,bias,resistor,

Quantity

1

1

1

1

1

1

1

3

1

1

1

1

1

1

3

1

4

6

4

1

2

2

1

2

6

1

IC11

IC8

IC9

IC1

IC14

IC12

IC4, IC6, IC7

IC3

IC10

IC5

D1

D12

D13

D15, D16, D25

D308

D3, D4, D6, D7

D21, D22, D23, D24, D26, D30

D8, D9, D10, D11

D14

D17, D18

D20, D29

D28

Q17, Q34

Q22, Q23, Q26, Q27, Q33, Q37

IC2

16

PT4200 SERVICE MANUAL

27

104-MT717T-001

28

104-SC1623-001

29

104-SC3356-001

30

104-SC4617-001

31

104-SC4738-001

32

104-SC4919-001

33

104-SC5108-001

34

104-TA1298-001

35

104-TC4082-001

36

105-2SJ243-001

37

105-2SK508-001

38

105-3SK318-001

39

105-RD01MU-001

40

105-RD07MV-001

41

105-SK1588-001

42

105-SK1824-001

43

106-0BA010-001

44

106-454548-001

45

106-LBE010-001

46

106-RD835E-001

47

108-455C24-001

48

108-CF450H-001

49

108-XF4995-001

50

109-040000-001

51

109-040100-001

52

109-040101-001

53

109-040102-001

54

109-040103-001

55

109-040104-001

56

109-040105-001

57

109-040122-001

58

109-040123-001

59

109-040124-001

60

109-040153-001

61

109-040154-001

62

109-040182-001

63

109-040183-001

64

109-040184-002

109-040203-001

65

109-040221-001

66

109-040222-001

67

109-040223-001

68

69

109-040224-001

70

109-040272-001

71

109-040273-001

72

109-040274-001

73

109-040332-001

74

109-040333-001

75

109-040334-001

76

109-040392-001

77

109-040393-001

78

109-040394-001

79

109-040471-001

80

109-040472-001

17

Chip triode / FMMT717TA

Chip triode / 2SC1623

Chip triode / 2SC3356

Chip triode / 2SC4617(S)(ROHM)

Chip triode / 2SC4738(GR),AF,AMPLIFIER(TOSHIBA)

Chip triode / 2SC4919,MUTING,CIRCUIT(SANYO)

Chip triode / 2SC5108Y(TOSHIBA)

Chip triode / KTA1298(Y)

Chip triode / KTC4082,(KEC)

Chip FET(field-effect transistor) / 2SJ243

Chip FET(field-effect transistor) / 2SK508NV(K52)

Chip FET(field-effect transistor) / 3SK318

Chip FET(field-effect transistor) / RD01MUS2

Chip FET(field-effect transistor) / RD07MVS1

Chip FET(field-effect transistor) / 2SK1588(NEC)

Chip FET(field-effect transistor) / 2SK1824

Knob switch / SKHLLBA010,exported

Chip switch/ 4.5*4.5*4.8

Chip touch switch / SKRTLBE010

Carbon encoder switch / RD835E-GA1-16C-0F01 18mm BAND

Plug-in phase frequency detector/ JTBM455C24

Plug-in porcelain filter/ LTM450HT,450kHz¡À3kHz

Plug-in IF filter / 49.95MHz¡À7.5KHz,U-5*2

Chip resistor / 0402,0R¡À5%

Chip resistor / 0402,10R¡À5%

Chip resistor / 0402,100R¡À5%

Chip resistor / 0402,1K¡À5%

Chip resistor / 0402,10K¡À5%

Chip resistor / 0402,100K¡À5%

Chip resistor / 0402,1M¡À5%

Chip resistor / 0402,1.2K¡À5%

Chip resistor / 0402,12K¡À5%

Chip resistor / 0402,120K¡À5%

Chip resistor / 0402,15K¡À5%

Chip resistor / 0402,150K¡À5%

Chip resistor / 0402,1.8K¡À5%

Chip resistor / 0402,18K¡À5%

Chip resistor / 0402,180K¡À5%
Chip resistor / 0402,20K¡À5%

Chip resistor / 0402,220R¡À5%

Chip resistor / 0402,2.2K¡À5%

Chip resistor / 0402,22K¡À5%

Chip resistor / 0402,220K¡À5%

Chip resistor / 0402,2.7K¡À5%

Chip resistor / 0402,27K¡À5%

Chip resistor / 0402,270K¡À5%

Chip resistor / 0402,3.3K¡À5%

Chip resistor / 0402,33K¡À5%

Chip resistor / 0402,330K¡À5%

Chip resistor / 0402,3.9K¡À5%

Chip resistor / 0402,39K¡À5%

Chip resistor / 0402,390K¡À5%

Chip resistor / 0402,470R¡À5%

Chip resistor / 0402,4.7K¡À5%

Q8, Q30

2

Q10

1

Q3

1

Q6, Q9

2

Q7

1

Q24

1

Q2, Q4, Q5

3

Q29, Q31, Q32

3

Q21

1

Q16

1

Q14, Q15

2

Q19, Q20

2

Q12

1

Q11

1

Q38

1

Q13, Q25, Q35, Q36

4

K1

1

K2, K4

2

K3

1

SW2

1

L57

1

CF1

1

XF1, XF2

1

C67, C166, C247, C276, C277, R4, R24, R30,

15

R99, R154, R174, R217, R255, R260, R261

R98, R127, R200, R238

4

R12, R94, R128, R237

4

R29, R39, R41, R42, R48, R49, R50, R111, R129,

16

R130, R131, R157, R184, R195, R199, R273

R109, R120, R121, R122, R123, R126, R133,

18

R140, R194, R205, R206, R212, R228, R254,
R264, R266, R268, R295

R105, R108, R113, R114, R115, R116

6

R160, R162

2

R188

1

R208

1

R6, R7, R8, R9

4

C187, C188, C189, C265, R64, R76, R142,

8

R192

1

R201

1

R224

2

R218, R219

1

R67

10

R27, R207, R225, R226, R227, R240, R263, R265,
R267, R269

R214, R215, R216

3

R294

1

R209, R210, R211

3

R86, R87, R164

3

R223

1

R46, R171, R172, R257

4

R231

1

R59, R60

2

R196, R258, R290

3

R82

1

R221, R222

2

R53, R149, R153

3

R165

1

R3

1

R118, R125, R155, R156, R204, R248

6

109-040473-001

81

109-040474-001

82

83

109-040562-001

84

109-040563-001

85

109-040564-001

86

109-040682-001

109-040683-001

87

109-040821-001

88

109-040822-001

89

109-040823-001

90

109-040913-001

91

109-060000-001

92

109-060100-001

93

109-060101-001

94

109-060102-001

95

109-060103-001

96

97

109-060104-001

109-060122-001

98

109-060124-001

99

109-060150-001

100

109-060151-001

101

109-060152-001

102

109-060153-001

103

109-060154-002

104

109-060181-001

105

109-060220-001

106

109-060222-001

107

109-060224-001

108

109-060271-001

109

109-060272-001

110

109-060274-001

111

109-060330-001

112

109-060332-001

113

109-060393-001

114

109-060470-001

115

109-060471-001

116

109-060472-001

117

109-060473-001

118

109-060561-001

119

109-060562-001

120

109-060563-001

121

109-060564-001

122

109-060680-001

123

109-060683-001

124

109-060822-001

125

109-060823-001

126

109-070000-001

127

109-100R47-001

128

110-110473-001

129

110-110683-001

130

110-220103-008

131

112-043100-001

132

112-043101-001

133

112-043102-001

134

Chip resistor / 0402,47K¡À5%

Chip resistor / 0402,470K¡À5%

Chip resistor / 0402,5.6K¡À5%

Chip resistor / 0402,56K¡À5%

Chip resistor / 0402,560K¡À5%

Chip resistor / 0402,6.8K¡À5%

Chip resistor / 0402,68K¡À5%

Chip resistor / 0402,820R¡À5%

Chip resistor / 0402,8.2K¡À5%

Chip resistor / 0402,82K¡À5%

Chip resistor / 0402,91K¡À5%

Chip resistor / 0603,0R¡À5%

Chip resistor / 0603,10R¡À5%

Chip resistor / 0603,100R¡À5%

Chip resistor / 0603,1K¡À5%

Chip resistor / 0603,10K¡À5%

Chip resistor / 0603,100K¡À5%

Chip resistor / 0603,1.2K¡À5%

Chip resistor / 0603,120K¡À5%

Chip resistor / 0603,15R¡À5%

Chip resistor / 0603,150R¡À5%

Chip resistor / 0603,1.5K¡À5%

Chip resistor / 0603,15K¡À5%

Chip resistor / 0603,150K¡À1%

Chip resistor / 0603,180R¡À5%

Chip resistor / 0603,22R¡À5%

Chip resistor / 0603,2.2K¡À5%

Chip resistor / 0603,220K¡À5%

Chip resistor / 0603,270R¡À5%

Chip resistor / 0603,2.7K¡À5%

Chip resistor / 0603,270K¡À5%

Chip resistor / 0603,33R¡À5%

Chip resistor / 0603,3.3K¡À5%

Chip resistor / 0603,39K¡À5%

Chip resistor / 0603,47R¡À5%

Chip resistor / 0603,470R¡À5%

Chip resistor / 0603,4.7K¡À5%

Chip resistor / 0603,47K¡À5%

Chip resistor / 0603,560R¡À5%

Chip resistor / 0603,5.6K¡À5%

Chip resistor / 0603,56K¡À5%

Chip resistor / 0603,560K¡À5%

Chip resistor / 0603,68R¡À5%

Chip resistor / 0603,68K¡À5%

Chip resistor / 0603,8.2K¡À5%

Chip resistor / 0603,82K¡À5%

Chip resistor / 0805,0R¡À5%

Chip resistor / 1206,0.47R¡À5%

Chip trimming resistor/ MVR22HXBRN473,47K¡À25%,B Linear

Chip trimming resistor/ MVR22HXBRN683,68K¡À25%,B Linear

Volume switch / RD810S-JA1-A103-0C61

Chip capacitor / 0402,10P¡À0.5P,50V,C0G

Chip capacitor / 0402,100P¡À5%,50V,C0G

Chip capacitor / 0402,1000P¡À10%,50V,X7R

PT4200 SERVICE MANUAL

7

R17, R18, R19, R20, R21, R22, R292

3

R166, R232, R293

3

R63, R65, R132

6

R173, R175, R176, R177, R178, R291

1

R163

1

R220

2

R78, R245

1

R33

2

R229, R230

1

R52

2

R77, R213

15

C1, C86, C266, C273, L16, L34, L42, L62, R23,
R28, R81, R141, R182, R241, R262

R95, R96, R97, R101

4

R74, R88, R89, R90, R180

5

R37, R38, R47, R150, R234, R256

6

R92, R117, R119, R124, R136, R137, R138,

9

R139, R203

R43, R79, R80, R84, R102, R103, R104, R107,

15

R158, R197, R235, R243, R247, R249, R297

1

R69

2

R5, R66

1

R31

1

R179

1

R54

1

R75

6

R143, R144, R145, R146, R147, R170

4

R70, R71, R91, R189

2

L54, R93

4

R2, R185, R186, R187

1

R233

2

R34, R35

1

R40

1

R85

1

R72

4

R55, R56, R57, R58

2

R68, R193

2

R15, R32

1

R25

4

R151, R152, R159, R183

4

R10, R11, R13, R14

2

R202, R244

4

R44, R61, R62, R191

2

R16, R239

1

R148

1

R73

1

R190

1

R36

1

R51

1

L63

3

R167, R168, R169

1

VR2

1

VR1

1

SW1

1

C257

2

C171, C196

8

C75, C105, C106, C110, C111, C263, C278,

C310

18

112-043103-001

135

136

112-043104-001

112-043104-002

137

112-043105-001

138

112-043152-001

139

112-043183-001

140

112-043222-001

141

112-043223-001

142

112-043273-001

143

112-043332-001

144

112-043333-001

145

112-043392-001

146

112-043393-001

147

112-043471-001

148

149

112-043472-001

150

112-043473-001

112-043474-001

151

112-043560-001

152

112-043562-001

153

112-043681-001

154

112-043683-001

155

112-043822-001

156

112-063100-001

157

112-063101-001

158

112-063102-001

159

112-063103-001

160
161

112-063104-001

162

112-063105-001

163

112-063120-001

164

112-063150-001

165

112-063152-001

166

112-063180-001

167

112-063182-001

168

112-0631R0-001

169

112-0631R5-001

170

112-063200-001

171

112-063220-001

172

112-063221-001

173

112-0632R0-001

174

112-063300-001

175

112-063330-001

176

112-063333-001

177

112-063390-001

178

112-0633R0-001

179

112-0633R5-001

180

112-063471-001

112-063472-001

181

112-063473-001

182

112-063474-001

183

112-0634R0-001

184

Chip capacitor / 0402,0.01uF¡À10%,50V,X7R

Chip capacitor / 0402,0.1uF,+80%--20%,16V,Y5V

Chip capacitor / 0402,0.1uF¡À10%,16V,X7R

Chip capacitor / 0402,1uF¡À10%,50V,X7R

Chip capacitor / 0402,1500P¡À10%,50V,X7R

Chip capacitor / 0402,0.018uF¡À10%,50V,X7R

Chip capacitor / 0402,2200P¡À10%,50V,X7R

Chip capacitor / 0402,0.022uF¡À10%,50V,X7R

Chip capacitor / 0402,0.027uF¡À10%,50V,X7R

Chip capacitor / 0402,3300P¡À10%,50V,X7R

Chip capacitor / 0402,0.033uF¡À10%,16V,X7R

Chip capacitor / 0402,3900P¡À10%,50V,X7R

Chip capacitor / 0402,0.039uF¡À10%,50V,X7R

Chip capacitor / 0402,470P¡À10%,50V,X7R

Chip capacitor / 0402,4700P¡À10%,25V,C0G

Chip capacitor / 0402,0.047uF¡À10%,16V,X7R

Chip capacitor / 0402,0.47uF¡À10%,16V,X7R

Chip capacitor / 0402,56P¡À5%,50V,C0G

Chip capacitor / 0402,5600P¡À10%,16V,X7R
Chip capacitor / 0402,680P¡À10%,16V,X7R

Chip capacitor / 0402,0.068uF¡À10%,16V,X7R

Chip capacitor / 0402,8200P¡À10%,16V,X7R

Chip capacitor / 0603,10P¡À0.5P,50V,C0G

Chip capacitor / 0603,100P¡À5%,50V,C0G

Chip capacitor / 0603,1000P¡À10%,50V,X7R

Chip capacitor / 0603,0.01uF¡À10%,50V,X7R
Chip capacitor / 0603,0.1uF¡À10%,50V,X7R

Chip capacitor / 0603,1uF¡À10%,50V,X7R

Chip capacitor / 0603,12P¡À5%,50V,C0G

Chip capacitor / 0603,15P¡À5%,50V,C0G

Chip capacitor / 0603,1500P¡À10%,50V,X7R

Chip capacitor / 0603,18P¡À5%,50V,C0G

Chip capacitor / 0603,1800P¡À10%,50V,X7R

Chip capacitor / 0603,1P¡À0.25P,50V,C0G

Chip capacitor / 0603,1.5P¡À0.25P,50V,C0G

Chip capacitor / 0603,20P¡À5%,50V,C0G

Chip capacitor / 0603,22P¡À5%,50V,C0G

Chip capacitor / 0603,220P¡À5%,50V,C0G

Chip capacitor / 0603,2P¡À0.25P,50V,C0G

Chip capacitor / 0603,30P¡À5%,50V,C0G

Chip capacitor / 0603,33P¡À5%,50V,C0G

Chip capacitor / 0603,0.033uF¡À10%,16V,X7R

Chip capacitor / 0603,39P¡À5%,50V,C0G

Chip capacitor / 0603,3P¡À0.25P,50V,C0G

Chip capacitor / 0603,3.5P/3.6P¡À0.25P,50V,C0G

Chip capacitor / 0603,470P¡À10%,50V,X7R

Chip capacitor / 0603,4700P¡À10%,50V,X7R

Chip capacitor / 0603,0.047uF¡À10%,16V,X7R

Chip capacitor / 0603,0.47uF+80%--20%,16V,Y5V

Chip capacitor / 0603,4P¡À0.25P,50V,C0G

PT4200 SERVICE MANUAL

C50, C149, C155, C159, C160, C161, C162, C279

8

C85, C101, C167, C168, C173, C176, C177, C178, C271,

10

C286

1

C307

4

C170, C235, C252, C303

C289

1

C156

1
1

C215

3

C242, C243, C245

2

C179, C185

1

C113

2

C224, C244

4

C82, C222, C238, C284

1

C223

C4, C9, C22, C29, C48, C51, C52, C53, C54, C57, C58,

33

C59, C60, C61, C71, C83, C84, C125, C152, C163, C248,
C258, C269, C270, C274, C275, C290, C291, C305, C308,
R161, R270, R271

1

C285

4

C212, C213, C253, C283

2

C169, C302

1

C184

1

C251

1

C260

1

C259

4

C157, C158, C239, C249

4

C124, C135, C142, C195

C93

1

C95, C96, C97, C98, C99, C100, C103, C104, C107,

18

C108, C109, C112, C114, C150, C151, C172, C264,
C272

4

C79, C153, C190, C280

8

C74, C165, C174, C175, C193, C204, C231, C232

4

C25, C30, C207, C233

2

C92, C133

3

C72, C73, C91

2

C33, C35

2

C69, C94

1

C226

3

C148, C229, C236

C62

1

C134

1

C143, C255, C256

3

C309

1

C2, C3, C88, C121, C182

5

C144, C194

2

C227

1

C221

1

C139

1

C70, C78, C87, C90, C131, C230

6

C63

1

C5, C6, C7, C10, C11, C12, C13, C14, C15, C16, C17,

42

C18, C19, C20, C21, C24, C26, C27, C28, C31, C34,
C36, C37, C38, C39, C40, C41, C42, C43, C44, C45,
C49, C55, C56, C102, C154, C183, C186, C220, C261,
C268, C287

C214

1

C211

1

C8, C80, C192

3

C129, C228

2

19

PT4200 SERVICE MANUAL

185

112-0635R0-001

112-0636R0-001

186

112-0637R0-001

187
188

112-0638R0-001

112-063R50-001

189
190

112-072225-001

191

112-072475-001

192

112-073105-001

193

112-073225-001

194

112-102105-001

195

112-102106-002

196

112-102156-001

197

112-172107-002

113-010100-001

198

199

114-06E220-001

200

114-06E270-001

201

114-06E560-001

202

114-06E680-001

203

114-06G101-003

204

114-06G102-001

114-06G120-001

205

114-06G221-002

206

114-06G270-001

207

114-06G332-001

208

114-06G470-001

209

114-06G6R8-001

210

114-08E103-001

211

114-08E821-001

212

114-10E221-001

213

115-1R53R0-004

214

115-1R54R0-004

215

115-1R55R0-001

216

115-1R58R0-002

217

117-000000-004

218

117-000000-005

219

121-200000-001

220

122-113M00-001

221

122-17M300-001

222

122-249M50-001

223

124-050000-004

224

124-050000-005

225

603-0W558A-001

226

Chip capacitor / 0603,5P¡À0.25P,50V,C0G

Chip capacitor / 0603,6P¡À0.5P,50V,C0G

Chip capacitor / 0603,7P¡À0.5P,50V,C0G,

Chip capacitor / 0603,8P¡À0.5P,50V,C0G

Chip capacitor / 0603,0.5P¡À0.1P,50V,C0G

Chip Ta capacitor/ TP Model,SIZE P,2.2uF¡À20%,10V

Chip Ta capacitor/ TP model,SIZE P,4.7uF¡À20%,10V

Chip capacitor / 0805,1uF+80%--20%,16V,Y5V

Chip capacitor / 0805,2.2uF+80%--20%,10V,Y5V

Chip Ta capacitor / TS Model,SIZE A,1uF¡À20%,16V

Chip Ta capacitor / TS Model,SIZE A,10uF¡À20%,10V

Chip Ta capacitor / TS Model,SIZE A,15uF¡À20%,6.3V

Chip Ta capacitor / TS Model,SIZE C,100uF¡À20%,10V

Chip trimming capacitor / TZV2Z100A110,3~10p+100/-%,Np0¡À
300ppm/¡æ

Chip wire inductor / C1608CB-22NJ,ceramic core22NH¡À
5%,0603

Chip wire inductor / C1608CB-27NJ,green,ceramic core27NH¡À
5%,0603

Chip wire inductor / C1608CB-56NJ,ceramic core56nH¡À
5%,0603

Chip wire inductor / C1608CB-68NJ,ceramic core68nH¡À
5%,0603

Chip inductor / MLG1608BR10J,100nH¡À5%,0603

Chip inductor / MLF1608A1R0K,1uH¡À5%,0603

Chip inductor / MLG1608B12NJT,12nH¡À5%,0603

Chip stacked inductor/ LGHK1608R22J-T,220nH¡À5%,0603

Chip inductor / MLG1608B27NJ,27nH¡À5%,0603

Chip inductor / MLF1608A3R3K,3.3uH¡À5%,0603

Chip inductor / MLG1608B47NJ,47nH¡À5%,0603

Chip inductor / MLG1608B6N8DT,6.8nH¡À0.5nH,0603

Chip inductor / FSLM2520-100J,10uH¡À5%,1008

Chip inductor / FSLM2520-R82K,820nH¡À10%,1008

Chip wire inductor / LQN21AR22J,220nH¡À5%,1206

Chip air-cored coil / 0.4*1.5*3TL,negative,high pin

Chip air-cored coil / 0.4*1.5*4TL,negative,high pin

Chip air-cored coil / 0.5*1.5*5T,positive,high pin

Chip air-cored coil / 0.4*1.5*8TL,negative,high pin

Chip bead / EMI,FILTER,SMT, BLM11A221S,0603

Chip bead / EMI,FILTER,SMT, BLM21P300S,0805

Microphone / B6027AP402-65

Chip transistor/ 13MHz¡À2.5PPm

Chip crystal resonator / CSTCR7M30G53-R0,7.3M

Plug-in crystal oscillator/ 49.5MHz¡À10PPM,UM-1

3.5mm Mic socket / SP/MIC,ST-212

2.5mm Eearphone socket / SP/MIC,EJ-2507-CCPA

Voice recorder IC / W588A080,binding

6

C116, C117, C118, C119, C122, C145

4

C127, C128, C137, C206

3

C32, C47, C126

4

C120, C136, C138, C141

6

C115, C147, C216, C217, C218, C219

3

C140, C209, C246

5

C46, C201, C202, C240, C292

2

C267, C306

1

C234

3

C199, C200, C225

4

C197, C203, C210, C237

3

C191, C198, C208

1

C254

2

C180, C181

1

L51

1

L30

1

L13

1

L53

4

L27, L36, L50, L52

1

1

2

3

2

1

1

1

2

1

10

2

1

1

11

5

1

1

1

1

1

1

1

L21

L31

L18, L49

L12, L32, L33

L28, L29

L35

L23

L45

L55, L56

L26

L1, L2, L3, L4, L5, L6, L7, L8, L9, L10

L14, L15

L24

L25

L19, L20, L40, L41, L44, L46, L47, L48, L60, L61,
L66

L37, L38, L39, L43, L58

MIC1

X4

X2

X3

J2

J1

Ic15

20

Appendix 5 Accessory List

PT4200 SERVICE MANUAL

Item

Battery

Hand Strap

Earphone

Charger

Model

KB-42A

8AJD-20K

KME-201

KME-202

KBC-58L

Specification

7.4V 1200mAh Li-Poly

7-hour standard charger

Accessory Figure

Adapter

Antenna

KTC-58C1

KA-3U064

Short Antenna

DC OUT 15V 400mA

21

Figure 1 PT4200 Top Board Position Mark Diagram

PT4200 SERVICE MANUAL

22

Figure 2 PT4200 Bottom Board Position Mark Diagram

PT4200 SERVICE MANUAL

23

Figur3 PT4200 Schematic Circuit Pane Diagram

24

Figur4 PT4200 Schematic Circuit Pane Diagram

25

8

Figure 5 KBC-58L Schematic Circuit Diagram

26

KBC-58L Schematic Circuit Diagram

8