Kirisun PT8000 Service Manual

PT8000

SERVICE MANUAL
VHF/UHF MOBILE RADIO

V071215

PT8000 SERVICE MANUAL

DANGEROUS!!

Do not connect AC power or the DC power that
exceeds the specified input value with any
connector or terminals of the radio. Otherwise it will
cause fire or electric shock.

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 tightly burning on skin.

CONTENTS

Chapter 1 Introduction.......................................................................2

Chapter 2 Radio Overview.................................................................3

Chapter 3 Circuit Introduction............................................................3

Chapter 4 Mode Introduction.............................................................7

Chapter 5 Maintenance, Assembly and Disassembly........................8

Chapter 6 Overall Debugging..........................................................10

Chapter 7 Main T echnical Indexes...................................................13

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

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

Appendix 2 Electronic components list............................................14

Appendix 3 Framework components list..........................................18

Appendix 4 Accessories..................................................................19

Appendix 5 PT8000 Spare Mechanical Part BOM...........................20

Figure 1 PT8000 Schematic Circuit Diagram...................................21

Figure 2 PT8000 Main Board Schematic Circuit Diagram................22

Figure 3 PT8000 T op Main Board Position Mark Diagram...............23

Figure 4 PT8000 Bottom Main Board Position Mark Diagram..........24

Figure 5 PT8000 Keyboard Schematic Diagram............................. 25

Figure 6 PT8000 T op Keyboard Position Mark Diagram..................26

Figure 7 PT8000 Bottom Keyboard Position Mark Diagram............27

It's better to avoid putting it in rain or snow, or any other
liquid to ensure its life and performance.

STATEMENT!

Kirisun Electronic (Shenzhen) Co., Ltd owns the copyright
of KSP8000 software.
Unauthorized Duplication of KSP8000 software is strictly
prohibited.
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. Unauthorized publication is
prohibited.
Kirisun Electronic (Shenzhen) Co., Ltd owns the
trademarks KIRISUN , , .

1

PT8000 SERVICE MANUAL

Chapter 1 Introduction

Installation Condition

1.Unpack

1.1 Introduction

This manual applies to the service and maintenance of PT8000 series of
FM mobile radio, and is designed for the engineers and professional
technicians that have been trained by our company. In this manual you
can find all the information of product service. Kirisun reserves the rights
to modify the product construction 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 repair the product.

1.2 Service Precautions

Please check the host in the package and the supplied accessories in
the following table before using. Any articles are found lost or damaged,
please contact the distributor without delay.

Accessories
Fixed bracket
Power Cable
Hand Microphone
Microphone Hanger
M4*10 Combination Screw
M4*16 Self-tapping Screw
M5*16 Self-tapping Screw
Instruction Manual

Quantity

1
1

1
1
4
2
4
1

Safety

Avoid skin contacting with the antenna connector and PCB.
Do not reverse the power polarities.
If signal input is bigger than 20dBm (100mW) it may cause damage to
the radio.
Do not turn on the power before the antenna and load connection is

Microphone Hanger

Power Cable

Fixed bracket

completed.
Do not use the radio if the antenna has been damaged. Contact the
damaged antenna will cause lightly burning on the skin.
Repair service can only conducted by professional technicians.

Electromagnetism Interference

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

Hand Microphone

M4*10 Combination
Screw

M5*16 / M4*16
Self-tapping Screw

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.

Change Components

All the components use 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 the following forms if you want to apply for any components
from Kirisun.

Component Application

Radio M o del/
Model

PT-8000 2
PT-8000 2

Compo
nent

ChipFET
Triode
Chip

No.

Q3
Q49

pecifications

S

RD01MUS1
2SC5108 Y

Mat e r i a l Serial

No.

105-RD01MU-R01
104-SC5108-R0111

Qua

ntity

2. Licenses

Rules require that the radio installation point (mobile station or base
station) needs permission license. The license carrier guarantees that
the RF power, frequency and frequency deviation comply with the
license requirements. The radio assembling or operation must be
conducted by the license-authorized technicians.

3. Installation Preparation

3.1 Description

Every radio has been adjusted and checked before the shipment. Before
installation it's better to check if the radio transmitting or receiving is
normal to make sure its proper operation.

3.2 Test

Connect all the cables and accessories to test the radio.
Transmitter frequency, deviation, and power output should be
checked, as should receiver sensitivity, squelch operation, and
audio output. Signlling operation should be verified.

4. Installation Steps

1.3 Service

All the Kirisun products are subject to the service warranty.
After-sales service will be provided, and the length of warranty is stated by
Kirisun. The radio and its accessories are all in the warranty. However, in
one of the following cases, charge free service will be not available.
No valid service warranty or original invoice.

Malfunction caused by disassembling, repairing or reconstructing the
radio by the users without permission.
Wearing and tearing or any man-made damage 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 and service staff.

4.1 Introduction

Check the car and decide how and where to install the radio antenna
and accessories. Allocate the cable in a proper place to avoid pressing
or squeezing it. And pay attention to the heat scattering of the radio
equipments.

4.2 Antenna

The most ideal place for antenna is the center of an open and flat
conduction region. It usually at the center of the car top or at the top of the
luggage cabinet. Stick the ground wire at the top of the luggage cabinet
and the car outer shell and make sure to connect the luggage cabinet with
the ground.

4.3 Connection of Power Cable

First of all, please check whether there is a hole for the power cable
on the insulating board. If no, please bore the board with the suitable drill
bit and fix a rubber grommet on it.

Afterwards, please have the cable pass through the insulating board
and lead from the car into the car engine. Connect the re

conductor to the

positive terminal of the accumulator and the black conductor to the

negative terminal.

2

PT8000 SERVICE MANUAL

1

2

3

4

ANT

ANT SW RF AMP

MCF

49.95MHz

IF SYSTEM

CF1

450KHz H

CF2

450KHz F

X3 multi ply

AF AMP

TCXO

16.8MHz

MIC AMPPLL VCOTX AMPPA AMP

RX
TX

At last, ring the remained conductor and fix it.

Note: Please maintain the sufficient relaxation of the power cable to
make it convenient to dismantle the radio in the state of power
connection.

4.4 Radio Installing

Warning: For passengers' safety, please fix the radio firmly on the fixed
bracket so that the radio will not be loosened in case of collision.

The fixed bracket is taken as an example. Draw the position and drill a
hole on the instrument panel first, and then install the fixed bracket with
4 M5*16 self-tapping screws. (Note: please fix the radio at the position
convenient for operation and control, and leave an enough space for fixation
and connection of the cable.)

Slide the radio into the fixed bracket and fix it with 4 M4*10 combination
screws (plus plain washer and spring washer). (Different combinations of
fixing holes are selectable to adjust the radio to the proper height and visual
angle.)

Connect the antenna and the power cable to the radio.

Install the microphone hanger at the position easy to use, with 2 M4*16
self-tapping screws. (The microphone and its cable should be fixed at the
position not affecting safe driving.)

Connect the microphone to the microphone jack on the front panel of the

radio and put it on the hanger.

Note: When replacing the protective tube for the power cable, please
use the one of the same specification without fail. It is not allowed to
change it into the tube of higher capacity.

4.5 If you do not intend to use the external speaker, fit the supplied
speaker-jack cap to stop dust and sand getting in.

Display
SCAN indicator
LOW indicator

8.

2.3 Rear Panel

Description
Scan indication: on when scan is enabled.
Power level indication: on when in low power.
Indicates the current channel in normal use, ranging
from 1~8.
Indicates the current squelch level when squelch
selection is enabled ranging from 0.~9.
Displays b when Public Address is enabled.
Displays - when the radio has no channel.
Displays u when the radio is in the remote stun status.
Displays h when the radio is in the remote kill status.
Displays P when the radio enters the PC
Programming Mode.
Displays t when the radio enters the PC Adjustment
Mode.
Displays C when the radio enters the Wired Clone
Mode

Chapter 2 Radio Overview

2.1 Description of External View

power button
Press this button for a
long time (more than

1.5 seconds) to switch
the radio on/off.

LED indicator
The red indicator will light
while transmitting; the green
indicator will light when it receives the carrier.

/ button (programmable button)

Display screen
For details, see Display .

Volume Control knob
To be used to adjust volume.

Microphone/Programming Interface

P1button (programmable button)

P2 button (programmable button)

P3button (programmable button)

PTT button (on the hand microphone)
Press the PTT button first, and then speak to the
microphone to transmit the voice to the other. Loosen to receive.

2.2 Display Screen

8

P1 P2 P3

8

Antenna Interface
Power Interface
External Speaker Interface

Chapter 3 Circuit Principles

3.1 Frequency Structure

Figure 3.1 Frequency Chart

The receiver adopts quadric mixing mode. The first IF is 49.95MHz, and
the second IF is 450kHz.
The first local oscillation signal of the receiver is produced by frequency
synthesizer and the second local oscillation signal is produced by X1 THG.
The signal of transmitter is produced by frequency synthesizer.
The reference frequency of frequency synthesizer is produced by TCXO.

3.2 Principles of Receiver RX

Figure 3.2 Schematic Diagram for Receiver

3

PT8000 SERVICE MANUAL

Front End of Receiver
Signals from the antenna are filtered by BPF which consists of two-LC via
RX/TX switch (D3 D11). After being filtered out the useless out-of-band
signals, the signals are amplified by LNA consisting of Q18 and external
components.
Signals from LNA are filtered again by BPF which consists of three-LC
before entering the 1st mixer (Q19).

AGC Circuit
It consists of Q16 and peripheral circuit. AGC will work to reduce the gain
of Q18 only when the input signal is oversize.

1st mixer
The first IF (49.95MHz) signal is produced after mixing of the receiving
signal from LNA and the 1st local oscillation signal from frequency
synthesizer.

IF Circuit
The first IF signal is filtered out adjacent channel and other useless signals
by crystal filter (XF1).
The first IF signal from crystal filter is amplified by the first IF amplifier (Q20)
before processing of IC in IF( IC6 TA31 136).
IF IC consists of the 1st mixer, IF amplifier, limiter, frequency discriminator,
noise amplifier, audio low pass filter.
Signals (16.8MHz) from X1 are amplified by Q1 1 and peripheral circuit and
then generate the second local oscillator (50.4MHz). The second IF signals
(450kHz) a re generated after signals mixing of the second local oscillation
(50.4MHz) and the first IF (49.9 5MHz) in IC6. Audio signals are demodulated
and outputted by IC6 after the second IF signals are amplified and limited
in IC6 and then filtered by ceramic filter(CF1 or CF2 450kHz).
The second IF filter selective circuit consists of CF1, CF2, D20, D21 and
peripheral circuit. When vehicle station is set on broadband, CF2 is
connected and CF1 is cut off; when it is narrowband, CF1 is connected
and CF2 is cut off.

Squelch Circuit
Signals demodulated by IC6 are amplified by noise amplifier of IC6 and
then amplified further by Q21. After that, the signals are demodulated by
D25, and then the generated DC level enters squelch circuit controlled by
MCU. The voltage is in inverse proportion to the input signals.

3.3 Principles of Transmitter (TX)

Transmitter Power Amplifier

8T 8R

Q5

VCO

TX/RX SW

Q4

RF AMP

8T

PRE

DRIVE

8T

13.8V

IC1

RA30H

ANT SW

8T

LPF

IC4

APC CONTROL

TO ANT

APC

Figure 3.3 Schematic Diagram
for Power Amplifier and Antenna Switch

The modulated RF signals from VCO are amplified by Q1, Q2, Q4 and Q5
before the power amplification in IC1. IC1 Output Power: 25W
Gate bias of IC1 is controlled by APC circuit, so the output power of
transmitter can be controlled conveniently by changing the gate bias voltage.

APC Automatic Power Control Circuit
The output power of RF power amplifier is detected and converted into DC
level by RF detector diode (D9, D10). The DC level is then compared with
signals from MCU and amplified in IC4 before power output control in Ic1
gate.
The voltage detected by detector diode will increase with oversized output
power of transmitter. When the output voltage of IC4 decreases, the bias

4

voltage of IC1 will decrease, finally the output power of transmitter will
decrease or vice versa. Thus, the output power of transmitter will keep stable
under any different working condition.
MCU can set the power by changing the voltage input to IC4.

3.4 Principles of Frequency Synthesizer

Q7

BUFF

Q1 Q2

BUFF

RF AMP

5V

2ND LOCAL

VCO OUT

UL

CK
DT
UL

QT TCXO

IC3

PLL IC

MB15E03SL

X1

TCXO

16.8MHz

*3 2ND LOCAL AMP

5V

Q6
TX

LOOP FILTER

3. 5V

Q14

RIPPLE

5V

FILTER

Q11

8R

VCO

VCO

MOD

Q14
RX

Figure 3.4 Schematic Diagram for Frequency Synthesizer

The PT8000 adopts PLL frequency synthesizer.
Frequency synthesizer consists of reference oscillator, voltage controlled
oscillator (VCO), programmable frequency divider (PFD), phase comparator
and low pass filter (LPF).
Transmitting VCO Unit consists of Q6, D1, D4, D5 and D6, etc. D8 is the
modulation circuit of transmitting VCO.
Receiving VCO Unit consists of Q12, D14, D16, D17 and D18, etc.
IC3 (MB15E03SL) is PLL integrated circuit and contains programmable
parametric frequency divider (PPFD), programmable frequency divider
(PFD), phase comparator and charge pump, etc.
Low pass filter consists of R54, C113 and so on.
Reference frequency is provided by X1(TCXO, 16.8MHz).
Reference frequency of TCXO (Temperature-controlled Crystal Oscillator)
is divided by PPFD in IC3 to produce reference frequen cy of 5kHz or 6.25kHz
(controlled by MCU based on the set channel frequency).
The oscillation frequency of VCO is compared with reference frequency to
produce error signal after divided by PFD in IC3. The error signal is filtered
by low pass filter before changing the VCO frequency to the set value in
VCO (it is locking).
Lock lost detection: When PLL is out of lock, IC3 pin14 will output low level
signal to MCU and then MCU prohibit transmitter from transmitting with a
warning tone.

3.5 Audio Processing Circuit:

IC8A IC8BIC8CIC8D
AMP LP LP AMP

IC6

IC9C IC9BIC9AIC9D

AF OUT

AMP HP LP LP

IC13D IC13AIC13BIC13C

MOD

LP LP IDC AMP

CTCSS/DCS

Q26

8R

HP

IC10BIC10A

2T

AMP

HP

IC5

DTMF

DECODER

Q33
SW

D0
D1
D2
D3
DV

MUTE

IC7

AF POWER AMP

TDA1519C

VR1

10K

J1 SPK

SPEAKER

MIC

Figure 3.5 Schematic Diagram for Audio Processing Circuit

MIC Signal Processing:
Voice signals from MIC are amplified in IC13A (IC13A composes the AGC
circuit with D32 and Q32 to increase the dynamic range of the circuit), and
then sent to IDC circuit composed by IC13B after the pre-emphasis of C322
and R267. The limited signals are switched broad/narrowband in Q30 and
then filtered signals over 3000Hz in the two-level low pass circuit composed
by IC13C a nd D. Then the filtered signals are modulated to transmitting VCO
by D8 after frequency offset adjustment in VR2.

PT8000 SERVICE MANUAL

Receiving Audio Signal Processing:
Audio signals from IC6 are classified into two groups. One group is amplified
and filtered in low pass circuit composed by IC8 (for audio signal), then the
relatively purified CTCSS/DCS signals are sent to MCU for p rocessing; the
other group is amplified by IC9C in IC9 (Q29 is gain s switch circuit used for
the volume switch of broad/narrowband), after that, one group is sha ped to
better square signal in two-tone shaping circuit composed by IC10, and then
sent to MCU for two-tone signal test; the other group is filtered CTCSS
signals in high pass circuit composed by IC6 D and then sent to the
de-emphasis circuit composed by R173 and C245, after that, the signals,
through the two-level low pass circuit (composed by IC9A and D) and high
pass circuit (composed by Q26), are amplified to make the speaker work
in IC7 after volume adjustment by the volume switch.
Speaker Impedance: 16ohm
Caution: Neither end of the speaker can be grounded!
Emergency alarm tone has no volume limitation.

3.6 Power Supply:

The station use 13.8V battery, while transmitter amplifier circuit (IC1) and
receiver audio amplifier (IC7) use battery directly for power supply.
IC17: 5V LDO, micro-power voltage stabilizer. Supply power for units such
as MCU, IF processing and frequency synthesizer.
IC16: 8V LDO, micro-power voltage stabilizer.
Q38: 8T switch (controlled by MCU)
8T: supply power for the front end of transmitter
Q40: 8R switch (controlled by MCU)
8R: supply power for the RF amplification and mixing units of receiver.

3.7 MCU Unit:

MCU Unit controls the operation of every unit to realize all functions of the
PT8000.
Communication with external PC
State data access
Control PLL for the generation, receiving and transmitting of local oscillation
frequency
Access to the current channel state
Control LED status indicator
Control power supplied condition of every unit
Detect action of every function key
Produce CTCSS signal
Produce DCS signal
Produce power controlled signal
Finish CTCSS decoding
Finish DCS decoding
Squelch detection and control
Control voice prompt content

Memory (E2PROM, AT24C08)
Channel data, CTCSS/DCS data and other function setting data and
parameter adjustment data.

CTCSS signals produced by MCU (PWM waveform) are sent to VCO for
modulation after filtered the HF components over 300Hz in low pass filter
composed by RC.

Table 3.1 CTCSS Frequency Table

Frequency

No.

[Hz]

67.0

1

69.3

2

71.9

3

74.4

4

77.0

5

79.7

6

82.5

7

85.4

8

88.5

9

91.5

10

DCS signaling
DCS (Digital code squelch), is a kind of continuous digital code modulated
on carrier with voice signal and used for squelch control. If DCS function is
set, the speaker is available only when receiving the same DCS code to
avoid the disturbance of useless signals.
The station has 83 kinds of standard codes including positive and inverse
code for your selection, such as Table 2.
DCS signals produced by MCU (PWM waveform) are sent to VCO and
TCXO for modulation (the HF components of DCS signals are modulated
by VCO, while the LF components by TCXO) after filtered the HF compon­ents over 300Hz in low pass filter composed by RC.
CTCSS/DCS signals from receiver are sent to MCU for decoding, and then
MCU test if there are DCS codes with the same setting of the station to
decide whether open the speaker or not.

Table 3.2 DCS Coding Schedule

023

114

025

115

026

116

031

125

032

131

043

132

047

134

051

143

054

152

065

155

071

156

072

162

073

165

074

172

Frequency

No.

[Hz]

94.8

11

97.4

12

100.0

13

103.5

14

107.2

15

110.9

16

114.8

17

118.8

18

123.0

19

127.3

20

174
205
223
226
243
244
245
251
261
263
265
271
306
311

315
331
343
346
351
364
365
371
411
412
413
423
431
432

No.

21
22
23
24
25
26
27
28
29
30

445
464
465
466
503
506
516
532
546
565
606
612
624
627

Frequency
[Hz]

131.8

136.5

141.3

146.2

151.4

156.7

162.2

167.9

173.8

179.9

631
632
654
662
664
703
712
723
731
732
734
743
754

No.

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

CTCSS/DCS signal coding and decoding:
CTCSS/DCS signals from MCU (pin12 output, PWM wave) are sent to VCO
and TCXO for modulation after the balance adjustment by VR1.
CTCSS/DCS signals from receiver are sent to MCU for decod ing, and then
MCU test if there are CTCSS/DCS signals with the same setting of the
station to decide whether open the speaker or not.
CTCSS

CTCSS (continuous tone control squelch system, hereinafter referred to
as CTCSS), is a kind of squelch control systemwith modulation on carrier
and continuous sub-audio signals as pilot tone. If CTCSSfunction is set,
the call is available only at the same CTCSSfrequency of both receiving
and transmitting parties to avoid the disturbance of othersignals.
Thestation has 39groups of standard CTCSS frequencyfor your selection,
such as Table1.

3.8 Description of Semiconductor Devices

MCU Description
Table 3.3 Port Description of Microprocessor (R5F212A8)

Port name

O.

N

IGN

1

EXT-ALARM

2

MODE

3

SCL

4

SDA

5

RST

6

XOUT

7

VSS

8

XIN

9

Pin Name
P33
P34

P43
P44

I/O

Function

I

Reserved

I

External Alarm Input

I

Connect resistor of 4.7K with VCC

O

EEPROM Clock Line
EEPROM Data Line

I/O

Reset Input

I

Oscillator

O

Grounding

-

Oscillator 7.3MHz

I

5

N Port name Pin Name I/O Function

O.

10
11

12
13
14
15
16
17
18

19

20

21
22
23
24
25
26
27
28
29

30

31

32

33

34

35

CLK

36

INT

37

TXD

38

RXD

39

BLC

40

8TC

41

8RC

42

APC/TV

43

SBC

44

TXGSW

45

P A

46

AF_MUTE

47

MIC_MUTE

48

AFCO

49

TI

50

RSSI

51

BUSY

52

TEMP

53

KEY2

54

KEY1

55

PTT

VCC
SHIFT

TO0
TO1
DEV1
DEV2
SCNLED
LOWLED
GLED

RLED

UL

CK
LE
DT
DTMFD0
DTMFD1
DTMFD2
DTMFD3
DTMFDV
RX

MICDAT

T2IN

HOOK

LEDC

DATA

P54

P53
P52
P51
P50
P27
P26
P25

P24

P23

P22
P21
P20
P17
P16
P15
P14
P86
P85

P84

P83

P82

P81

P80

P60
P45
P66
P67
P65
P64

P63

P31

P30
P36

P32
P13
P12

P11

P10
P00

P01
P02

P03
P04
P62

­O

O(PWM)
O(PWM)
O
O
O
O
O

O

I

O
O
O
I
I
I
I
I
O

I

I(TRFI)

I

O

O
O
I
O
I
O
O

O

O(PWM)

O
O

O
O
O
O

I(A/D8)
I(A/D7)
I(A/D6)
I(A/D5)

I(A/D4)
I(A/D3)
I

CPU Power 5V Input
Clock Beat Frequency Shift
HOn
QT/DQT Output
QT/DQT Output
Max Frequency Compensation
(four frequency band)
Scanning Indicator Light H on
Low-power Indicator Light H on
Receiving Green Indicator Light
Hon
Transmitting Red Indicator Light
Hon
PLL Lock Detection Pin
H: Locking L: Out of Lock
PLL Clock Output
PLL IC Enable Pin H: Locking
PLL Data Output
DTMF Detection Input
DTMF Detection Input
DTMF Detection Input
DTMF Detection Input
DTMF Decoding Effective Input
TX/RX VCO Selection
HTX LRX
Preservation: Digital Keyboard
Microphone Data Input
Reserved: 2TONE Detection
Output
Hang Signal Input, Connect
R0ohm with RXD
LED Display Control
H Effective
LED Display Control Data
LED Display Control Clock
Power Detection Input
RS-232C Output
RS-232C Input
Reserved
Transmitting Power Control
H: on
Receiving Power Control
H: on
TX: Automatic Power Control
Output
RX: BPF Tuning Output
Main Power Switch Control H: on
Transmitting Gate Control
L: Transmitting
PA Control H: PA
Mute Control L: AF Mute
Mute Control H: Mic Mute
Audio Power Amplification Control
L: Power Amplification
QT/DQT Signal Input
Signal Strength Input
Busy Signal Input
Power Amplification Temperature
Protection Input
Keyboard Entry
Keyboard Entry
Press [PTT] to input, Connect
R0 ohm with TXD

6

PT8000 SERVICE MANUAL

N Port name Pin Name I/O Function

O.

NC

56

NC

57

VCCN

58

AVSS

59

DTMF

60

VREF

61

AVCC

62

MAXAF

63

WNTC

64

3.4 Functional description of semiconductor device
Item Model Function Description

HT9172

IC5

PST9140NR

IC12

NJM2902V

IC13

MB15E03SL

IC3

NJM2904

IC4

TA31136

IC6

NJM2902

IC9

NJM2902

IC8

R5F212A8

IC11

AT24C08

IC15

TDA1519C

IC7

RA30H

IC11

NJM78L05

IC17

TA7808S

IC16

DTC144EE

Q9

2SK508NV

Q12

2SC4617

Q14

2SC5108

Q11

2SK1829

Q16

3SK318

Q18

3SK318

Q19

2SC5108

Q1

2SC5108

Q20

2SC4617

Q21

DTC144EE

Q22
Q23

DTA144EE

Q29

DTA144EE

Q30

2SK1824

Q27

DTC144EE

Q33

2SK1824

Q45

2SK1824

Q28

DTC144EE

Q35

DTA144EE

Q40

KTA1298

Q1

2SC5108

Q38

KTA1298

Q32

2SC4919

Q4

2SC3357

Q5

2SC3357

Q46

2SK1824

P06

P07

P37

P35

O(D/A0)

­O(D/A1)

-

­O

O

DTMF Decoder Chip
MCU Reset Circuit
MIC Amplification, Limitation, Filtering
Frequency Synthesizer
APC, Voltage Comparison, Driving
Receiver 2nd Local Oscillation, 2nd IF Amplification,
Limitation, Demodulation, Noise Amplification
Receiver demodulated signal Amplification, Filtering
Receiver CTCSS Signal Amplification, Filtering
MCU
E2PROM, Channel Frequency Data Storage,
Function Setting Parameter, Debug Mode Parameter
Audio Frequency Power Amplification
Transmitter Final Power Amplification
5V Voltage Regulation Input
8V Voltage Regulation Input
APC Control Switch
Receiving VCO Oscillation Circuit
VCO Power Filters
Receiving 2nd Local Oscillation Frequency
Multiplier Circuit
Receiving High Power Amplification Gains
Control Switch
Receiver High Power Amplification
First Level Mixer
VCO Buffer Amplifier
1st IF Amplifier
Receiver Noise Amplifier
Broad/narrowband Noise Switch
Receiving Broad/narrowband Frequency Switch
Receiving Broad/narrowband Switch
Transmitting Broad/narrowband Switch
Beat Frequency Control Switch
Receiving Audio Mute Switch
Receiver Audio Output Switch, Disconnection
on Emergency
Audio Power Amplification Control Switch
MIC Power Switch of Amplification Unit
8R Switch
VCO Buffer Amplifier
8T Switch
MIC AGC Control Switch
Transmitter 1st Amplification
Transmitter 2nd Amplification
Receiver Audio Output Switch, Connection on

Connect Pull-down Resistor
with VSS
Connect Pull-down Resistor
with VSS
Frequency Voltage Regulation
Output VCCN
Connect with VSS
D/A Output: DTMF/BEEP Output
Connect with AVCC
CPU Power 5V Input
Alarm Max Volume Control Switch
H: Controlled by Volume Switch
L: Max Volume at Emergency Alarm
Broad/narrowband Control
H: Broad L: Narrow

PT8000 SERVICE MANUAL

Item Model Function Description

Emergency
Q6
Q3
Q7
Q13

2SK508NV
2SC4116
2SC5108
2SC4116

Transmitting VCO Oscillation Circuit

Transmitting VCO Control Switch

VCO Buffer Amplifier

Receiving VCO Control Switch

Table 3.5 Functional description of Diode
Item Model Function Description

D3 D11
D12
D14 D16

L709CE
MA2S111
HVC376

Transmitter antenna switch diode
Lock Lost Detection Diode

Receiving VCO Oscillation Varactor Diode
D17 D18
D16
D17
D18
D7
D2 D19
D20 D21

HVC376
HVC376
HVC376
HZU5ALL
HSC277
DAN222

Receiving VCO Oscillation Varactor Diode

Receiving VCO Oscillation Varactor Diode

Receiving VCO Oscillation Varactor Diode

APC Output Voltage-limiting Diode

VCO Output Switch

Receiving 2nd IF Filter Broad/narrowband

Switch
D8
D23
D25
D27 D28

HVC376
HVC355B
MA742
HVC376B

Transmitting VCO Oscillation Varactor Diode

Receiving BPF Varactor Diode

Noise Demodulation

Receiving BPF Varactor Diode
D26 D30
D29
D32
D1 D4

1SS372
HVC376
1SV278

MIC AGC Detection Diode

Transmitting VCO Oscillation Varactor Diode
D5 D6
D8

Transmitting VCO Modulation Diode

Table 3.6 Characteristic of XF1 crystal filter

Item Rated Value

Nominal center frequency
Transmission band width
40dbstop band width
Ripple
Insertion loss
Ensure attenuation
Terminal impedance

49.95MHz

7.5khz or higher, but within 3db

20.0khz or lower

1.0db or lower

3.0db or lower
80db or higher, but between f0-910khz
330

Chapter 4 Mode Introduction

Mode combinations

Mode Function How to access
User Mode For normal use Power on

Data
Programming

PC

mode

Mode

Test Mode

Reading and writing
frequency data and
other functions
Used to tune the radio
using the PC.

Firmware
Programming
Mode

Wired Clone
mode

Upgrades the software
when new features are
added

Used to transfer progra­mming data from one
radio to another.

User Mode

You can enter User Mode (conventional communication mode) by turning
on the power switch. Users in the mode can use the de fined function of the
vehicle station.

Data programming mode:

Before leaving the factory, the radio has been set in factory. However, due
to different requirements of users, functional parameters of the radio like
working frequency, channels, CTCSS/DCS and auto scanning, etc. Should
be reset. Therefore, the company has specially designed a set of Chinese
/English programming software KSP8000 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 KSP8000 on the PC.
B. As shown in the figure below, connect the radio and the serial port of the
PC with the special programming cable KSPL-05

Pesonal

to an RS-232c port

DB9 female plug

computer

Receive instructions
from the PC

Receive instructions
from the PC

Press button P3 for over
2 seconds and connect
the power at the same
time; Receive instructions
from the computer

Press button P1 for over
2 seconds and connect
the power at the same
time.

to the antenna
connector

DC power supply

13.8V/7A

to DC cable

Table 3.7 Performance and characteristic of CF1 LTWC450H

Item Rated Value

Nominal center frequency
6db band width
50db band width
Ripple
Insertion loss
Ensure attenuation
Terminal impedance

450kHz

3.0khz or higher

9.5khz or lower

2.0db or lower, but between f0 4kHz

6.0db or lower

47.0db or higher, but between f0 100kHz

1.5k

Table 3.8 Performance and characteristic of CF1 LTWC450F

Item Rated Value

Nominal center frequency
6db band width
50db band width
Ripple
Insertion loss
Ensure attenuation
Terminal impedance

450kHz

6.0khz or higher

12.5khz or lower

2.0db or lower, but between f0 4kHz

6.0db or lower

47.0db or higher, but between f0 100kHz

1.5k

to the MIC connector

Figure 4-1

C. Turn on the power of the PC.
D. Turn on the power of the radio.
E. Click on KSP8000 to perform the program and run KSP8000.
F. In the main menu of KSP8000, click on [Read] to read the parameters
of the radio into the PC; click on [Write] to write the parameters set in the
PC into the radio.
G. With the KSP8000 Programming Software, you can set the following
parameters according to the requirements of customers:

The station information:

Model of vehicle station (model/ frequency range), serial number, embed­ded information, MCU version and hardware version, etc

The station parameters:

(1) Programmable buttons: P1, P2, P3, and can be set to long/short
button and the long button time can be defined
(2) Miscellaneous settings
. Cable copy mode allowed
. TOT transmitting time limitation
. TOT transmitting time limitation reset

7

PT8000 SERVICE MANUAL

. Pre-tips for TOT transmitting time limitation
. Re-key time of TOT transmitting overtime
. Squelch level option
. Warning tone
. Frequency reading code
. Frequency writing code
(3) Scanning settings
Scanning option, priority channel selection, back-channel selection, trans­mitting pause time, scanning detention time and fly-back period
(4) Emergency alarm settings

Channel parameters:

(1) Channel receiving frequency and transmitting frequency. (stepping fre­quency: 2.5KHz / 5KHz / 6.25KHz
(2) Channel receiving signaling and transmitting signaling
none
sub-audio frequency CTCSS (60~260Hz @ 0.1Hz step)
CTCSS digital DCS(-777 ~ 777 @ octal umber)
(3) Busy channel lock option
(4) Clock beat frequency shift selection
(5) Channel spacing selection 25KHz/12.5KHz(Wide/Narrow)
(6) Scanning adding/deletion selection
(7) Channel high/low power selection
(8) CTCSS rhyme flip & phase shift selection
(9) Code selection of CALL1 and CALL2
(10) Code selection of PTT ID on-line code and off-line code

DTMF setting:

DTMF encoding template
DTMF encoding sequence (group 1~12)
DTMF decoding sequence (group 1~4
Decoding response
Please refer to the Help document of KSP8000 for details.
Caution:

1. Before editing for the first time, the data should be read from the vehicle
station and properly backed up.

2. If the edited data cannot work normally after being written into the vehicle
station, please open the backup data and rewrite them.

3. Model Information is the important information of the vehicle station
and should not be altered.

Test Mode

According to Figure 4-1, connect the vehicle station and the serial port of
the computer with the special programming cable.
Warning: Before entering the Test Mode, please first connect a high-frequ­ency load of 50 ohm to the antenna port of the vehicle station or connect the
vehicle station to a comprehensive tester.
With the KSP8000 Programming Software, you can enter the adjustment
status in Computer Test Mode to adjust the following parameters of the ve­hicle station:

1. Frequency stability

2. Transmitting five frequency points of high power

3. Transmitting five frequency points of low power

4. Level- 9 broadband of squelch level opens five frequency points

5. Level- 9 broadband of squelch level closes five frequency points

6. Level- 9 narrowband of squelch level opens five frequency points

7. Level- 9 narrowband of squelch level closes five frequency points

8. Level- 1 broadband of squelch level opens five frequency points

9. Level- 1 broadband of squelch level closes five frequency points

10.Level- 1 narrowband of squelch level opens five frequency points

11.Level- 1 narrowband of squelch level closes five frequency points

12.Five frequency points of broadband QT(67Hz) frequency offset

13.IF points of narrowband QT(67Hz) frequency offset

14.Five frequency points of broadband QT(151.4Hz) frequency offset

15.IF points of narrowband QT(151.4Hz) frequency offset

16.0Five frequency points of broadband QT (254.1Hz) frequency offset

8

IF points of narrowband QT(254.1Hz) frequency offset
Five frequency points of broadband DQT frequency offset
IF points of narrowband DQT frequency offset
Receiving five frequency points of sensitivity tuning voltage
IF points of broadband/narrowband DTMF frequency offset

Firmware Programming Mode

The vehicle station is equipped with FLASH ROM internally, when new
features are announced, it can be upgraded.

1. Press P3 for over 2 seconds and connect the power at the same time.
Enter Firmware Programming Mode when orange indicator is on.

2. Run computer programming software KMU.

3. Connect the vehicle station and the computer with the programming cable.

4. Select the com port to load firmware upgrade file and then click on E.P
for downloading.

5. Turn off the power to quit after the communication is successful.

6. Just repeat steps 1-5 if you want to program another vehicle station.

Cable Copy Mode

The vehicle station will not exit automatically after entering cable copy mode
if the cable copy function is set. But the user need to turn on the power again
if return the user mode.
The operation steps are as follows:

Main machine

Cable copy line KCL02

Sub machine

Figure 4-2

1. Press [P1] and connect the power at the same time for entering copy
mode when it C appears. Please enter user mode if copy mode is
prohibited.

2. Connect sub-machine with cable copy line (KCL02) and turn on the power
of sub-machine.
3 .Press [P2] of Host for copy with the red indicator on, thus the data can be
copied from Host to sub-machine. The sub-machine shows P with green
indicator on when receiving the data. The red indicator of Host is off after
copy, while sub-machine reset automatically after receiving all data.

4. You may continue the copy of step 3.

Notes: You may turn on or prohibit cable copy mode by PC Programming
Software. The vehicle station can not enter cable copy mode once the cable
copy function is prohibited.

Chapter 5 Maintenance, Assembly and Disassembly

The station is a kind of sophisticated communication equipment with small
and fine mechanical structure. You should assemble and disassemble it
carefully during the maintenance process. The Instruction for assembly and
disassembly are as follows:

1.Exploded view of the station

PT8000 SERVICE MANUAL

Figure 5-1

ITEM

PART NUMBER

1

201-008000-R02

2

203-006800-R26

3

203-007200-R08

4

204-006800-R01
5
6

301-25050J-R01
7

201-008000-R01
8

204-008000-R01
9

121-100000-R19
10

120-400000-R04
11

120-400000-R05
12

204-008000-R02
13

204-008000-R03
14

203-008000-R02
15

120-100000-R15
16

201-008000-R06
17

203-008000-R03
18

202-008200-R02
19

303-30100G-R01
20

203-008200-R03
21

102-304452-R01
22

203-008200-R05
23

203-008200-R09
24
25

301-30060G-R01

DESCRIPTION
KNOB VOLUME
SPRING PLATE

NUT VOLUME KNOB
LABEL LCD LENS
LABEL LOGO
SCREW M2.5*5
CASE FRONT

NET DUSTPROOF SPEAKER
SPEAKER
LINE SPEAKER
LINE 0.5*34P*110mm

STRIP DUSTPROOF C
STRIP DUSTPROOF B
CASE TOP AL
CABLE POWER
FASTENER POWER CABLE
PLATE METAL
PLUG RUBBER SPEAKER HOLE

SCREW M3*10 WITH SPRING PLATE
ANTENNA BASE

MODULE POWER
SHIELD POWER MOUDLE

CUSHION SHIELD
PCB ASSEMBIY MAIN
SCREW M3*6

QTY.

1
1
1
1
1
6
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1
1
8

ITEM

26
27
28
29
30
31
32
33

PART NUMBER

204-008000-R04
203-008000-R01
301-30250D-R01
201-008000-R04
201-008000-R03
202-008000-R01

302-26060D-R01

DESCRIPTION
STRIP DUSTPROOF A

CASE BOTTOM AL
SCREW M3*25

LENS LED
LENS LCD WINDOW

KEY RUBBER
PCB ASSEMBLY CONTROL
SCREW M2.6*6

QTY.

2
1
6
1
1
1
1
5

9

PT8000 SERVICE MANUAL

2.Instruction for disassembly of the station for maintenance
1 RF-PCB Disassembly
Release the 6 screws (M3x25) for the upper and lower covers and
open the aluminum alloy lower cover (see the figure below).

2 Instruction for disassembly of KEY-PCB

Figure 5-4

.Release the 6 screws (M3x25) for the upper and low er covers and open

the aluminum alloy lower cover (see the figure above).

.Unplug the flat cable and horn cable.
.Release the 2 screws (M2.5x5) for the panel to separate the pa nel from

the station.

.Unplug the volume knob and then remove the knob circlip and the switch

nub.

.Release the 5 fixing screws (M2.6x6) for KEY-PCB to take out the KEY­PCB from the plastic panel (see the figure above).
After the disassembly above, you can carry out corresponding reparation
and debugging according to the actual malfunction.

Chapter 6 Overall Debugging
Please ensure good grounding of all equipment before testing/debugging
Please ensure the correct connection of antenna output with the corresp­onding equipment or load before testing/debugging.

Figure 5-2

.Remove the power module shield and unsolder the welding leg of
power amplification module from PCB with the electric iron (see the figure
above).

.Release the 4 screws (M2.5x5) of the baffle and remove the metal baffle,
plastic buckle and horn hole plug (see the right figure above).

.Unplug the flat cable and horn cable, unsolder the antenna head from
RF-PCB with the electric iron, release the screws and then carefully remove
the RF-PCB from the aluminum alloy upper cover (see the figure below).

Figure 5-3

Transmitter output must connect with standard signal source/ frequency
meter/ frequency deviator/frequency spectrograph by RF Power Attenuator.
Please ensure no transmitting operation when testing the receiver.
Please ensure the good antistatic measures for human body and equip­ment during the debugging /testing/reparation process.

6.1 Equipment and software for repair

It is necessary to list the equipment and software in the following table to
repair and test this product.
Table 6.1 For repair and test: equipment and software

Name

N

O.

Computer

1

Programming software

2

Programming cable

3

Dubbing cable

4

DC regulator

5

power meter

6

RF

Frequency

7

meter

Frequency

8

deviator
DMM

9

Audio signal generator

10

Parameter requirements
Above P2, compatible IBM PC, WINDOWS
98/ME/2000/XPOperating System
KSP8000
KSPL-05
KCL-02
Output voltage:13.8V, output electric
current: 20A
Test range: 0.5---50W
Frequency range: 100MHz500MHz
Resistance: 50Ù
SWR 1.2
Frequency range: 0.1600MHz
Frequency accuracy: higher than 1 10
Sensitivity: higher than 100mV
Frequency range: DC600MHz
Test range: 0-- 5kHz
Input resistance: above 10MÙ/V DC,

capable of measuring voltage, electric
current and resistance.

Frequency range:2---3000Hz
Output level: 1---500mV

-6

10

PT8000 SERVICE MANUAL

N Name Parameter requirements

O.

power attenuator

RF

11

Standard signal source

12

Oscillograph

13

Audio Frequency voltmeter

14

Recommend how to use: item 6, 7, 8, 10, 11 and 12 which listed in the table
can be substituted by integrated tester Hp8920.

Figure 6.1 External microphone Interface Definition

6.2 Debugging

6.2.1 VCO Adjustment
a.Adjust channel to high frequency point see Table 6.2
b.In the rec eiving state, test voltage of PD by DMM and adjust fine­ tuning capacitor C122 to get PD voltage of 3.5V 0.1V
c.In the transmitting state, test voltage of PD by DMM and adjust fine­ tuning capacitor C39 to get PD voltage of 3.5V 0.1V
d.Adjust channel to low frequency point see Table 6.2
e.In the receiving state, test voltage of PD by DMM (>0.6V)
f.In the transmitting state, test voltage of PD by DMM (>0.6V)

Table 6.2High/ Intermediate/ Low Frequency Point of All Models

Low Frequency

PT8000(2) 400.125MHz 425.125MHz 449.975MHz
PT8000(3) 438.125MHz 464.125MHz 489.975MHz

6.2.2 Transmitting frequency offset adjustment (HP8920 is set to TX state
and filter is at 50Hz~ 15kHz) :
a.Input audio signal of 60mV, 1000Hz at MIC jack of vehicle station.
b.Adjust channel to low frequency point see Table 6.2
c.Press PTT to adjust VR2 and set frequency offset to 4.2kHz
d.Observe frequency offset of other channels (>3.5kHz)

6.2.3 PLL frequency calibration (HP8920 is set to TX state)
Enter Frequency Stability in Computer Test Mode to achieve the
rated transmitting frequency by adjusting the number from 0 to 255
(Error<100Hz).

6.2.4 Transmitting frequency adjustment (HP8920 is set to TX state)
a.Enter Transmitting High Power in Computer Test Mode to
adjust the five frequency points including min., low, intermediate, high
and max points respectively and set transmitting power to 22W by
adjusting the number from 0 to 255.
b.Enter Transmitting Low Power in Computer Test Mode to adjust
the five frequency points including min., low, intermediate, high and

Decrement: 40db or 50db
Receive power : higher than 50W
Frequency range:10MHz---1000MHz
Output level:0.1uV~32mV
(-127dBm~-17dBm)
Frequency range: DC~20MHz
Test range: 10mV~20V
Test range: 10mV~10V

PointIntermediate
Frequency Point

High Frequency Point

max points respectively and set transmitting power to 5W by adjusting the
number from 0 to 255.

6.2.5 Smooth regulation for DCS waveform (HP8920 is set to TX state
and filter is at 20Hz~300Hz)
Enter DCS frequency offset in Computer Test Mode to adjust
VR1 close to square wave.

6.2.6 DCS frequency offset (HP8920 is set to TX state and filter is at
20Hz~300Hz)
a.Enter DCS frequency offset in Computer Test Mode and select
Broadband to set the frequency offset to 0.75 kHz by adjusting the
number from 0 to 255 and the five frequency points including min., Low,
intermediate, high and max points.
b.Enter DCS frequency offset in Computer Test Mode and select
Narrowband to set the frequency offset to 0.35 kHz by adjusting the
number from 0 to 255.

6.2.7 (QT67) frequency offset (HP8920 is set to TX state and filter is at
20Hz~300Hz)
a.Enter (QT67) frequency offset in Computer Test Mode and
select Broadband to set the frequency offset to 0.75 kHz by adjusting
the number from 0 to 255 and the five frequency points including min.,
low, intermediate, high and max points.
b.Enter (QT67) frequency offset in Computer Test Mode and
select Narrowband to set the frequency offset to 0.35 kHz by adju­ sting the number from 0 to 255.

6.2.8 (QT254) frequency offset (HP8920 is set to TX state and filter is at
20Hz~300Hz)
a.Enter (QT254) frequency offset in Computer Test Mode and
select Broadband to set the frequency offset to 0.75 kHz by adju
sting the number from 0 to 255 and the five frequency points including
min., low, intermediate, high and max points.
b.Enter (QT254) frequency offset in Computer Test Mode and
select Narrowband to set the frequency offset to 0.35 kHz by adju­ sting the number from 0 to 255.

6.2.9 Receiving Sensitivity (HP8920 is set to RX)
Enter Receiving Sensitivity in Computer Test Mode to adjust the
five frequency points including max, high, intermediate, low and min.
points and the number from 0 to 255 for setting max sensitivity of all points.

6.3.0 Receiver Squelch setting (HP8920 is set to RX)
a.Enter SQL9 open in Computer Test Mode (input the frequency
of adjusted frequency point, transmitting signal with amplitude of -115dBm,
audio frequency of 1kHz and frequency offset of 3kHz in antenna interface
of vehicle station) and click Broadband to adjust the five frequency
points including min., low, intermediate, high and max points.
b.Enter SQL9 open in Computer Test Mode (input the frequency
of adjusted frequency point, transmitting signal with amplitude of -115dBm,
audio frequency of 1kHz and frequency offset of 1.5kHz in antenna int­ erface of vehicle station) and click Narrowband to adjust the five
frequency points including min., low, intermediate, high and max points.
c.Enter SQL9 close in Computer Test Mode (input the frequency
of adjusted frequency point, transmitting signal with amplitude of -116dBm,
audio frequency of 1kHz and frequency offset of 3kHz in antenna inte­ rface of vehicle station) and click “Broadband” to adjust the five freq­ uency points including min., low, intermediate, high and max points.
d.Enter SQL9 close in Computer Test Mode (input the frequency
of adjusted frequency point, transmitting signal with amplitude of -116dBm,
audio frequency of 1kHz and frequency offset of 1.5kHz in antenna int­ erface of vehicle station) and click Narrowband to adjust the five fre­ quency points including min., low, intermediate, high and max points.
e.Enter SQL1 close in Computer Test Mode (input the frequency
of adjusted frequency point, transmitting signal with amplitude of -122dBm,
audio frequency of 1kHz and frequency offset of 3kHz in antenna inter­ face of vehicle station) and click Broadband to adjust the five frequ­ ency points including min., low, intermediate, high and max points.
f.Enter SQL1 open in Computer Test Mode (input the frequency

11

of adjusted frequency point, transmitting signal with amplitude of -122dBm,
audio frequency of 1kHz and frequency offset of 1.5kHz in antenna int­ erface of vehicle station) and click Narrowband to adjust the five fre­ quency points including min., low, intermediate, high and max points.
g.Enter SQL1 close in Computer Test Mode (input the frequ­ ency of adjusted frequency point, transmitting signal with amplitude of

-123dBm, audio frequency of 1kHz and frequency offset of 3kHz in an­ tenna interface of vehicle station) and click Broadband to adjust the
five frequency points including min., low, intermediate, high and max
points.
h.Enter SQL1 close in Computer Test Mode (input the frequ­ ency of adjusted frequency point, transmitting signal with amplitude of

-123dBm, audio frequency of 1kHz and frequency offset of 1.5kHz in
antenna interface of vehicle station) and click Narrowband to adjust

6.3.2 Adjusting explanation
Please refer Table3, 4 and 5 for the debugging of the parts above

Table 6.3 Voltage controlled oscillator

Item
Setting
Locking
voltage

Test condition
Supply voltage battery terminal:13.8V
CH: Receiving high frequency point
CH: Receiving low frequency point
CH: Transmitting high frequency point
CH: Transmitting low frequency point

Instrumentation
DMM

PT8000 SERVICE MANUAL

the five frequency points including min., low, intermediate, high and max
points.

6.3.1 DTMF frequency offset (HP8920 is set to TX state and filter is at 50Hz
~15 kHz)
a.Enter DTMF frequency offset in Computer Test Mode and select
Narrowband to set frequency offset to 3.5 kHz by adjusting the five
frequency points including min., low, intermediate, high and max points
and the number from 0 to 255.
b.Enter DTMF frequency offset in Computer Test Mode and select
Narrowband to set frequency offset to 1.7 kHz by adjusting the number
from 0 to 255.

Test point
PD

Correcting member

C122

C39

Requirement

3.5V 0.1V
>0.6V

3.5V 0.1V
>0.6V

Remarks

Adjustment
Observation
Adjustment
Observation

Table 6.4 Receiving part

Item
BPF

Audio
Power

Sensitivity

Squelch

Test condition

Test frequency:
Intermediate
Frequency Point
Antenna Interface Input:
RF OUT: -47dBm(1 V)
MOD: 1kHz
DEV: 3.0kHz/ 1.5kHz
Audio load: 16
CH: Low Frequency Point
CH: Intermediate
Frequency Point
CH: High Frequency Point
therefore OUT:

-119dBm(0.25 V)
MOD: 1kHz
DEV: 3.0kHz/ 1.5kHz
CH: Receiving Center
Frequency Point
Level-9
RF OUT output:-114dBm
Level-1
RF OUT output:-121dBm

Instrumentation
Spectrum Analyzer /
Integrated Tester
therefore signal
generator

Oscillograph

Audio frequency
voltmeter

distortion tester

/Integrated tester

Test point
Before
Mixing

Speaker
Interface

Correcting member
Test mode

Test mode

Test mode

Test mode

Requirement
Smooth Wave.

(Volume knob clockwise to the
end) Audio Power>4W

SINAD
12dB or higher

Normal squelch opening
after adjustment

Normal squelch opening
after adjustment

Remarks
User's adjustment
not recommended

12

Table 6.5 Transmitting part

Item
RF rate
DCS waveform
(balance)
Power

Max Modulation
Frequency
Deviation
DTMF DEV
CTCSS DEV
CTCSS DEV
DCS DEV

Test condition

CH: Transmitting
Low Frequency Point
AG: 1kHz/60mV

CTCSS: 67Hz
CTCSS: 254.1Hz
DCS: 023N

Instrumentation
Frequency Counter / Integrated Test er
Oscillograph / Integrated Tester

Power Tester / Integrated Tester
Ammeter
Frequency deviator/Integration Test er

Frequency deviator/Integration Test er
Frequency deviator/Integration Test er
Frequency deviator/Integration Test er
Frequency deviator/Integration Test er

Test point

Antenna

PT8000 SERVICE MANUAL

correcting member
Test mode
VR1

Test Mode

VR2

Test Mode
Test Mode
Test Mode
Test Mode

requirement
Within 100Hz
Nearly flat waveform
Square wave
Adjust to 22W/5W

Adjust to 4.2kHz/2.1kHz

Adjust to 3.5kHz1.7 kHz
Adjust to 0.75kHz /0.35 kHz
Adjust to 0.75kHz /0.35 kHz
Adjust to 0.75kHz /0.35 kHz

remarks

200Hz

50Hz

Chapter 7 Main Technical Indexes

7.1 General Indexes

Model
Frequency

Modulation
Number of channels
Channel separation
IF
Working voltage
Working temperature
Antenna Impedance
Microphone Impedance
Dimension
Weight

7.2 Receiving part

Usable Sensitivity (12dB SINAD)
Squelch-on sensitivity
Receiver residue output
Modulation receiving bandwidth
Adjacent channel selectivity
Intermodulation immunity
Spurious response immunity
Audio Output Power
Receiving consumption current
Standby current

7.3 Transmitting part

Transmitting Power
Frequency Stability
Max Modulation Frequency Deviation
Modulation Distortion 300~3000Hz
Adjacent-channel Transmitting Power
Spurious Emissions
Residual FM
Transmitting Consumption Current

PT8000
(1) (136 ~ 174) MHz(2) (400 ~ 450) MHz
(3) (438 ~ 490) MHz(5) (350 ~ 400) MHz

16K F3E/11K F3E
8
25 kHz/12.5kHz
1St IF: 49.95MHz 2nd IF: 450kHz

13.8V Negative Earth

-25 ~ +55
50

2.2k

W -45dB/N -40dB
W 7kHz/N 3.5kHz
W 70dB/N 60dB

4W, Balance @ Distortion 5% 16

-118dBm

-121dBm @ Level-1 Squelch

65dB
70dB

1A
100mA

20W/5W @13.8V DC

2.5ppm
5kHz/ 2.5kHz

3%

W 70dB/N 60dB

70 dB

W -45dB/N -40dB

7A @ 13.8V DC

Chapter 8 Trouble Shooting Guide

Problem

No.

Power on Failure

1

Phase lock loop

2

unlocked (Beeping)

No talkback

3

No receiving signal

4

The red transmission

5

Indicator lights but no
sound is heard.
The green receiving

6

indicator lights but no
sound is heard.

Solution
A. The power cable is not connected with the
accumulator or the host reliably. Please con­nect the power cable reliably.
B. The protective tube of power cable is burnt
out. Please change it.
C. The power button is of poor contact. Please
change the silica gel button or PCB button.
D. The rechargeable battery is out of power.
Please recharge or change a new one.
E. CPU is broken, Please change the IC.
A. Channel frequency beyond the range, reset
channel data.
B. The crystal X1 of phase lock loop is broken.
Please change it.
C. The oscillator tube is broken. Please change it.
D. The IC3 of phase lock loop is broken. Please
change IC.
A. The frequency is not right. Please reselect
the channel of the same frequency.
B. The CTCSS/DCS code is not the same.
Please reset it.
C. It is out of the effective communication range.
A. The antenna is not in good contact. Please
fasten the antenna head.
B. The high-frequency amplifying tube Q18 is
broken. Please change it.
C. The squelch level is set to high Please reset
the squelch level.
D. The mixed tube Q19 is broken. Please
change it.
E. The FM IC6 is broken. Please change IC.
A. Power module IC1 damaged, no power
output, please change the module.
B. MIC damaged, please change it.
A. The speaker is broken. Please change it.
B. The audio power amplifierIC7 is broken.
Please change IC.

13

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
E2PROM E2PROM
HPF high pass filter
IDC instantaneous deviation control
IF intermediate frequency
LED Light-Emitting Diode
LNA low noise amplifier
LPF low pass filter

Appendix 2 Mainboard Bom(438-490MHz)

PT8000 SERVICE MANUAL

MCU micro control unit
MIC microphone
MOD modulation
MONI monitor
PLL phase lock loop
PTT push-to-talk
RX
SPK speaker
TCXO temperature control X' oscillator
TX
UL un-lock
VCO voltage control oscillator

N

Material Serial No.

O.

1

101-08000U-R03

2

102-0R8C2A-R01

3

102-304452-R01

4

102-9140NR-R01

5

102-A1519C-R01

6

102-A31136-R01

7

102-AT2408-R01

8

102-B15E03-R01

9

102-FP3502-R01

10

102-HT9172-R01

11

102-M2902V-R01

12

102-M2904V-R01

13

102-M78L05-R01

14

102-TA7808-R01

15

103-0DA221-R01

16

103-0MA742-R01

17

103-1SS372-R01

18

103-1SV278-R01

19

103-A2S111-R01

20

103-AP1250-R01

21

103-DAN222-R01

22

103-HSC277-R01

23

103-HVC355-R02

24

103-HVC376-R01

25

103-HZU5AL-R01

26

103-SM3MA1-R01

27

104-A144EE-R01

28

104-C144EE-R01

29

104-MT717T-R01

30

104-SC3357-R01

31

104-SC4116-R01

32

104-SC4617-R01

33

104-SC4919-R01

34

104-SC5108-R01

35

104-TA1298-R01

36

105-2SK508-R01

37

105-3SK318-R01

38

105-SK1824-R01

39

105-SK1829-R01

Name/Spec.
PT8000PCB / PT8000U-080403.PCB,ROHS
MCU / R8C/2A,R5F212A8SNFP ,PLQP-64,ROHS
Power module / RA30H4452M ROHS
MOS IC / PST9140NR,ROHS
MOS IC / TDA1519C,SIL9,ROHS
MOS IC / TA31136FN,SSOP ,ROHS
MOS IC / A T24C08AN-SU27,ROHS
MOS IC / MB15E03SL,PLL,16-PIN,SSOP ,ROHS
MOS IC / XC62FP3502PR,SOT-89,ROHS
MOS IC / HT9172,SOP ,ROHS
MOS IC / NJM2902V,OP-AMP,ROHS
MOS IC / NJM2904V,OP-AMP,ROHS
MOS IC / NJM78L05UA ROHS
MOS IC / TA7808S,TO-220,ROHS
Chip diode / DA221(ROHM),ROHS
Chip diode / MA742(PANASONIC),ROHS
Chip diode / 1SS372(TOSHIBA),ROHS
Chip variable capacitor diode/ 1SV278,ROHS
Chip diode / 0603,MA2S111(PANASONIC),ROHS
Chip diode / MA4P1250-1072T,ROHS
Chip diode / DAN222,(ROHM),ROHS
Chip diode /,HSC277(HITACHI),ROHS
Chip variable capacitor diode/ 0603,HVC355B(HITACHI),ROHS
Chip variable capacitor diode/ HVC376B,ROHS

Chip diode / HZU5ALL(HITACHI),ROHS
Chip diode / DSM3MA1,ROHS
Chip capacitor / DTA144EE(ROHM),ROHS
Chip capacitor / DTC144EE(ROHM),ROHS

Chip capacitor / FMMT717TA,ROHS
Chip capacitor / 2SC3357 ROHS
Chip capacitor / 2SC4116-GR ROHS
Chip capacitor / 2SC4617(S)(ROHM),ROHS
Chip capacitor / 2SC4919,MUTING,CIRCUIT(SANYO),ROHS
Chip capacitor / 2SC5108Y(TOSHIBA),ROHS
Chip capacitor / KTA1298(Y),ROHS
FET / 2SK508NV(K52),ROHS
FET / 3SK318,ROHS
FET / 2SK1824,ROHS
FET / 2SK1829,ROHS

Installation Positon

IC11
IC1
IC12
IC7
IC6
IC15
IC3
IC2
IC5
IC8, IC9, IC13
IC4
IC17
IC16
D13
D9, D10, D25
D32
D8
D12, D15, D22
D3, D11
D20, D21, D33
D2, D19
D23
D1, D4, D5, D6, D14, D16, D17, D18, D26, D27,
D28, D29, D30
D7
D34
Q15, Q23, Q29, Q35, Q36
Q9, Q10, Q17, Q22, Q24, Q25, Q28, Q37, Q42,
Q43, Q44, Q47
Q39
Q4, Q5
Q3, Q13
Q14, Q21, Q26, Q31
Q32
Q1, Q2, Q7, Q11, Q20
Q38, Q40
Q6, Q12
Q18, Q19
Q30, Q33, Q34, Q45, Q46
Q16

14

40

108-450C24-R02

41

108-CF450F-R01

42

108-CF450H-R01

43

108-XF4995-R01

44

109-040000-R01

45

109-040100-R01

46

109-040101-R01

47

109-040102-R01

48

109-040103-R01

49

109-040104-R01

50

109-040105-R01

51

109-040122-R01

52

109-040123-R01

53

109-040124-R01

54

109-040151-R01

55

109-040153-R01

56

109-040154-R01

57

109-040183-R01

58

109-040184-R01

59

109-040184-R02

60

109-040204-R01

61

109-040220-R01

62

109-040221-R01

63

109-040223-R01

64

109-040224-R01

65

109-040241-R01

66

109-040272-R01

67

109-040273-R01

68

109-040274-R01

69

109-040331-R01

70

109-040332-R01

71

109-040333-R01

72

109-040334-R01

73

109-040363-R01

74

109-040392-R01

75

109-040393-R01

76

109-040394-R01

77

109-040433-R01

78

109-040471-R01

79

109-040472-R01

80

109-040473-R01

81

109-040474-R01

82

109-040560-R01

83

109-040561-R01

84

109-040562-R01

85

109-040563-R01

86

109-040564-R01

87

109-040682-R01

88

109-040683-R01

89

109-040684-R01

90

109-040821-R01

91

109-040824-R01

450kHz Phase Frequency Detector /
JTBM450CX24,ROHS
Plug-in porcelain filter / LTM450FW,
450kHz 7kHz,ROHS
Plug-in porcelain filter / LTM450HT,
450kHz 3kHz,ROHS
Plug-in IF filter / 49.95MHz 7.5KHz,
U-5*2,ROHS
Chip resistor / 0402,0R 5%,ROHS

Chip resistor / 0402,10R 5%,ROHS
Chip resistor / 0402,100R 5%,ROHS
Chip resistor / 0402,1K 5%,ROHS

Chip resistor / 0402,10K 5%,ROHS

Chip resistor / 0402,100K 5%,ROHS

Chip resistor / 0402,1M 5%,ROHS
Chip resistor / 0402,1.2K 5%,ROHS
Chip resistor / 0402,12K 5%,ROHS
Chip resistor / 0402,120K 5%,ROHS
Chip resistor / 0402,150R 5%,ROHS
Chip resistor / 0402,15K 5%,ROHS
Chip resistor / 0402,150K 5%,ROHS
Chip resistor / 0402,18K 5%,ROHS
Chip resistor / 0402,180K 1%,ROHS
Chip resistor / 0402,180K 5%,ROHS
Chip resistor / 0402,200K 5%,ROHS
Chip resistor / 0402,22R 5%,ROHS
Chip resistor / 0402,220R 5%,ROHS
Chip resistor / 0402,22K 5%,ROHS
Chip resistor / 0402,220K 5%,ROHS
Chip resistor / 0402,240R 5%,ROHS
Chip resistor / 0402,2.7K 5%,ROHS
Chip resistor / 0402,27K 5%,ROHS
Chip resistor / 0402,270K 5%,ROHS
Chip resistor / 0402,330R 5%,ROHS
Chip resistor / 0402,3.3K 5%,ROHS
Chip resistor / 0402,33K 5%,ROHS
Chip resistor / 0402,330K 5%,ROHS
Chip resistor / 0402,36K 5%,ROHS
Chip resistor / 0402,3.9K 5%,ROHS
Chip resistor / 0402,39K 5%,ROHS
Chip resistor / 0402,390K 5%,ROHS
Chip resistor / 0402,43K 5%,ROHS
Chip resistor / 0402,470R 5%,ROHS
Chip resistor / 0402,4.7K 5%,ROHS
Chip resistor / 0402,47K 5%,ROHS
Chip resistor / 0402,470K 5%,ROHS
Chip resistor / 0402,56R 5%,ROHS
Chip resistor / 0402,560R 5%,ROHS
Chip resistor / 0402,5.6K 5%,ROHS
Chip resistor / 0402,56K 5%,ROHS
Chip resistor / 0402,560K 5%,ROHS
Chip resistor / 0402,6.8K 5%,ROHS
Chip resistor / 0402,68K 5%,ROHS
Chip resistor / 0402,680K 5%,ROHS
Chip resistor / 0402,820R 5%,ROHS
Chip resistor / 0402,820K 5%,ROHS

PT8000 SERVICE MANUAL

CD1

Cf2

Cf1

Xf1, XF2

C134, C135, C162, C289, R66, R72, R145, R149, R172, R186, R196, R197,
R222, R223, R229, R238, R242, R252, R257, R268, R282, R287
R2, R3, R71, R82, R84, R219
R21, R26, R101, R121, R247
R9, R48, R70, R78, R83, R136, R188, R194, R201, R206, R231, R235,
R254, R266, R270, R292
R10, R12, R13, R15, R20, R24, R35, R62, R65, R68, R74, R79, R81, R112,
R174, R210, R228, R233, R237, R280, R283, R284, R285
R40, R52, R53, R60, R64, R67, R80, R92, R117, R123, R199, R208, R225,
R236, R239, R248, R269, R273
R128, R130, R131, R132, R133, R137, R139, R147, R192, R277
R152, R267
R88, R245
R150, R175
R63, R111
R49, R50, R56, R155, R162, R272
R6, R11, R27, R140, R216
R198, R207, R217, R259
R169, R170, R221
R93, R143
R69
R33, R37, R103
R115
R85, R86, R106, R109, R110, R153, R171, R215
R183, R213
R61
R1, R57, R148
R59, R161, R177, R205
R42, R141, R164
R14, R43
R124, R142, R146, R159, R173
R151, R156, R157, R185, R249
R73, R108, R134, R230
R98
R271, R279
R278
R202, R220
R160, R163
R100
R5, R16, R39, R76, R77, R91, R179, R187, R191, R195, R288, R289, R290
R75, R89, R105, R126, R127, R129, R293, R294
R96, R165, R204
R135
R51, R54, R55
R178, R184, R193, R212, R241, R260
R97, R125, R232, R258, R263, R275
R99, R243
R94, R95, R113, R114, R244
R118, R264, R274
R209
R255
R224

15

109-040913-R01

92

109-060000-R01

93

109-060100-R01

94

109-060102-R01

95

109-060121-R01

96

109-060151-R01

97

109-060221-R01

98

109-060271-R01

99

109-060272-R01

100

109-060274-R01

101

109-060471-R01

102

109-0605R6-R01

103

109-060681-R01

104

109-060821-R01

105

109-070000-R01

106

109-070220-001

107

109-070470-001

108

109-100221-R01

109

110-110473-R01

110

110-110683-R01

111

111-010000-R01

112

111-030000-R01

113

112-043100-R01

114

112-043101-R01

115

112-043102-R01

116

112-043103-R01

117

112-043104-002

118

112-043104-R02

119

112-043105-R01

120

112-043110-R01

121

112-043120-R01

122

112-043123-R01

123

112-043150-R01

124

112-043180-R01

125

112-043182-R01

126

112-0431R0-R01

127

112-0431R5-R01

128

112-043220-R01

129

112-043221-R01

130

112-043222-R01

131

112-043223-R01

132

112-0432R0-R01

133

112-0432R5-R01

134

112-043330-R01

135

112-043331-R01

136

112-043333-R01

137

112-043390-R01

138

112-043392-R01

139

112-043393-R01

140

112-0433R0-R01

141

112-043470-R01

142

Chip resistor / 0402,91K 5%,ROHS
Chip resistor / 0603,0R 5%,ROHS
Chip resistor / 0603,10R 5%,ROHS
Chip resistor / 0603,1K 5%,ROHS
Chip resistor / 0603,120R 5%,ROHS
Chip resistor / 0603,150R 5%,ROHS
Chip resistor / 0603,220R 5%,ROHS
Chip resistor / 0603,270R 5%,ROHS
Chip resistor / 0603,2.7K 5%,ROHS
Chip resistor / 0603,270K 5%,ROHS
Chip resistor / 0603,470R 5%,ROHS
Chip resistor / 0603,5.6R 5%,ROHS
Chip resistor / 0603,680R 5%,ROHS
Chip resistor / 0603,820R 5%,ROHS
Chip resistor / 0805,0R 5%,ROHS
Chip resistor / 0805,22R 5%
Chip resistor / 0805,47R 5%,
Chip resistor / 1206,220R 5%,ROHS
Chip trimming resistor / MVR22HXBRN473,
47K 25%,B Linear,ROHS
Chip trimming resistor / MVR22HXBRN683,
68K 25%,B Linear,ROHS
Plug-in voltage-dependent resistor / 10D220 ROHS
Chip Fuse / 433003,3A/32V,1206(429003) ROHS
Chip capacitor / 0402,10P 0.5P ,50V,C0G,ROHS
Chip capacitor / 0402,100P 5%,50V,C0G,ROHS

Chip capacitor / 0402,1000P 10%,50V,X7R,ROHS

Chip capacitor / 0402,0.01uF 10%,50V,X7R,ROHS

Chip capacitor / 0402,0.1uF 10%,10V,X5R,
Chip capacitor / 0402,0.1uF 10%,10V,X5R,ROHS

Chip capacitor / 0402,1uF 10%,6.3V,X5R,ROHS

Chip capacitor / 0402,11P 5%,50V,C0G,ROHS
Chip capacitor / 0402,12P 5%,50V,C0G,ROHS
Chip capacitor / 0402,0.012uF 10%,50V,X7R,ROHS
Chip capacitor / 0402,15P 5%,50V,C0G,ROHS
Chip capacitor / 0402,18P 5%,50V,C0G,ROHS
Chip capacitor / 0402,1800P 10%,50V,X7R,ROHS
Chip capacitor / 0402,1P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0402,1.5P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0402,22P 5%,50V,C0G,ROHS
Chip capacitor / 0402,220P 5%,50V,C0G,ROHS
Chip capacitor / 0402,2200P 10%,50V,X7R,ROHS
Chip capacitor / 0402,0.022uF 10%,50V,X7R,ROHS
Chip capacitor / 0402,2P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0402,2.4P/2.5P 0.1P,50V,C0G,ROHS
Chip capacitor / 0402,33P 5%,50V,C0G,ROHS
Chip capacitor / 0402,330P 10%,50V,X7R,ROHS
Chip capacitor / 0402,0.033uF 10%,16V,X7R,ROHS
Chip capacitor / 0402,39P 5%,50V,C0G,ROHS
Chip capacitor / 0402,3900P 10%,50V,X7R,ROHS
Chip capacitor / 0402,0.039uF 10%,50V,X7R,ROHS
Chip capacitor / 0402,3P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0402,47P 5%,50V,C0G,ROHS

PT8000 SERVICE MANUAL

R190
L52, L62
R29, R30
R18, R19
R41
R4
R45
R44
R34
R36
R32
R8
R58
R22, R23
L29
L30
L31
R46, R47
VR2

Vr1

R281
F1
C7, C53, C80, C138, C139, C307
C36, C37, C81, C90, C91, C99, C103, C105, C108, C112,
C114, C115, C349, C350, C351, C352, C353, C354, C356,
C359, C360, C361, C362, C363
C58, C167, C170, C171, C188, C189, C195, C196, C206,
C212, C214, C221, C231, C266, C311, C321, C370
C33, C102, C121, C133, C145, C153, C191, C242, C256,
C284, C297, C330, C333
C173
C17, C83, C144, C172, C183, C184, C186, C187, C210,
C211, C213, C235, C253, C259, C261, C268, C270, C271,
C295, C300, C308, C319, C325, C329, C334, C337, C338
C56, C120, C267, C278, C280, C291, C298, C303, C304,
C312, C323, C335, C336
C197
C2, C16, C106, C118, C194
C249, C252, C258, C263, C273
C13, C190, C198
C204
C217
C69, C70, C175
C203
C27, C28, C82, C97, C98, C168, C272, C281
C282
C248, C262
C158, C238, C239, C322
C60, C161, C177
C200
C6, C130, C147, C232
C140
C125, C154, C156, C257, C276
C225, C229
C301, C314
C288
C35, C124, C275
C129, C255

16

143

112-043471-R01

144

112-043473-R01

145

112-0434R0-R01

146

112-0435R0-R01

147

112-043681-R01

148

112-043683-R01

149

112-043683-R02

150

112-043820-R01

151

112-043821-R01

152

112-0438R0-R01

153

112-0439R0-R01

154

112-043R50-R01

155

112-063102-R01

156

112-063104-R01

157

112-0631R0-R01

158

112-0632R0-R01

159

112-063333-R01

160

112-063471-R01

161

112-0634R0-R01

162

112-0635R0-R01

163

112-0636R0-R01

164

112-063R50-R01

165

112-072105-R01

166

112-072106-R01

167

112-072225-R01

168

112-072475-R01

169

112-073334-R01

170

112-102104-R01

171

112-102105-R01

172

112-102156-R01

173

112-103102-R01

174

112-103106-R01

175

112-103120-R01

176

112-103140-R01

177

112-1031R0-R01

178

112-1032R0-R01

179

112-1034R0-R01

180

112-191477-R01

181

112-201476-R02

182

113-010100-R01

183

114-06E180-R01

184

114-06E560-R01

185

114-06E680-R01

186

114-06G102-R01

187

114-06G120-R01

188

114-06G180-R01

189

114-06G181-R01

190

114-06G220-R01

191

114-06G221-R02

192

114-06G332-R01

Chip capacitor / 0402,470P 10%,50V,X7R,ROHS

Chip capacitor / 0402,0.047uF 10%,16V,X7R,ROHS
Chip capacitor / 0402,4P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0402,5P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0402,680P 10%,16V,X7R,ROHS
Chip capacitor / 0402,0.068uF 10%,16V,X7R,ROHS
Chip capacitor / 0402,0.068uF 10%,10V,X7R,ROHS
Chip capacitor / 0402,82P 5%,50V,C0G,ROHS
Chip capacitor / 0402,820P 10%,16V,X7R,ROHS
Chip capacitor / 0402,8P 0.5P ,50V,C0G,ROHS
Chip capacitor / 0402,9P 0.5P ,50V,C0G,ROHS
Chip capacitor / 0402,0.5P 0.1P ,50V,C0G,ROHS
Chip capacitor / 0603,1000P 10%,50V,X7R,ROHS
Chip capacitor / 0603,0.1uF 10%,50V,X7R,ROHS
Chip capacitor / 0603,1P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0603,2P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0603,0.033uF 10%,16V,X7R,ROHS
Chip capacitor / 0603,470P 10%,50V,X7R,ROHS

Chip capacitor / 0603,4P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0603,5P 0.25P ,50V,C0G,ROHS
Chip capacitor / 0603,6P 0.5P ,50V,C0G,ROHS
Chip capacitor / 0603,0.5P 0.1P ,50V,C0G,ROHS
Chip T a capacitor ,SIZE P,1uF 20%,10V,ROHS
Chip T a capacitor ,SIZE P,10uF 20%,6.3V,ROHS
Chip T a capacitor ,SIZE P,2.2uF 20%,10V,ROHS
Chip T a capacitor ,SIZE P,4.7uF 20%,10V,ROHS

Chip capacitor / 0805,0.33uF+80%--20%,10V,Y5V,ROHS
Chip T a capacitor ,SIZE A,0.1uF 20%,35V,ROHS
Chip T a capacitor ,SIZE A,1uF 20%,16V,ROHS
Chip T a capacitor ,SIZE A,15uF 20%,6.3V,ROHS
Chip capacitor / 1206,1000P 10%,50V,X7R,ROHS
Chip capacitor / 1206,10uF+80%--20%,16V,Y5V,ROHS
Chip capacitor / 1206,12P 5%,50V,C0G,ROHS
Chip capacitor / 1206,14P 5%,50V,C0G,ROHS
Chip capacitor / 1206,1P 0.25P ,50V,C0G,ROHS
Chip capacitor / 1206,2P 0.25P ,50V,C0G,ROHS
Chip capacitor / 1206,4P 5%,50V,C0G,ROHS
Plug-in electrolytic capacitor / 10*16,470UF25V, 20% ROHS
Chip electrolytic capacitor / 6.3*5.3,47U25V, 20%,ROHS
Chip trimming capacitor / TZV2Z100A110,3~10p+100,ROHS
Chip inductor / C1608CB-18NJ, 18NH 5%,0603,ROHS
Chip inductor / C1608CB-56NJ, 56nH 5%,0603,ROHS
Chip inductor / C1608CB-68NJ, 68nH 5%,0603,ROHS
Chip inductor / MLF1608A1R0K,1uH 5%,0603,ROHS
Chip inductor / MLG1608B12NJT,12nH 5%,0603,ROHS
Chip inductor / MLG1608B18NJT,18nH 5%,0603,ROHS
Chip inductor/ LGHK1608R18J-T,180nH 5%,0603,ROHS
Chip inductor / MLG1608B22NJT,22nH 5%,0603,ROHS
Chip inductor/ LGHK1608R22J-T,220nH 5%,0603,ROHS
Chip inductor / MLF1608A3R3K,3.3uH 5%,0603,ROHS

PT8000 SERVICE MANUAL

C3, C9, C11, C12, C19, C20, C21, C38, C47,
C49, C50, C51, C52, C54, C55, C57, C59, C68,
C71, C87, C88, C89, C92, C95, C110, C116,
C119, C123, C128, C136, C142, C143, C148,
C151, C157, C160, C169, C174, C178, C185,
C207, C215, C218, C220, C222, C223, C247,
C274, C279, C283, C285, C293, C296, C305,
C309, C310, C315, C317, C326, C328, C332,
C339, C340, C342, C343, C348, C369
C245, C294, C306
C100, C107, C126
C72, C73, C166, C205
C132
C155, C244, C320
C357, C358
C234
C324
C192
C93
C48, C62, C65
C26
C96
C4, C5, C176
C40
C18
C22, C23, C24, C25, C64, C67, C77, C78,
C79, C84, C85, C86, C101, R7
C30, C32, D24
C10, C34
C31
C41, C111
C290
C327
C233, C237, C313
C1, C8, C42, C131, C159, C216, C226, C246,
C286, C345, C346
C181
C109, C113
C117
C137, C149
C29
C265
C45
C94
C43
C15
C61
C331
C66, C74, C341, C344
C39, C122
L20, L45
L36
L47, L53
L48
L14, L15
L13
L2
L7, L8
L12, L21, L27, L44
L5, L37

17

PT8000 SERVICE MANUAL

193

114-06G471-R01

194

114-06G561-R01

195

114-06G820-R01

196

114-08E103-R01

197

114-08E331-R01

198

114-08E821-R01

199

114-10D170-R01

200

114-10D330-R01

201

115-1R23R0-R01

202

115-2R02R0-R01

203

115-3R0110-R01

204

115-3R06R0-R02

205

117-000000-R05

206

117-000000-R07

207

117-000000-R08

208

119-060104-R01

209

122-116M80-R02

210

122-13M580-R01

211

122-17M300-R01

212

124-020000-R08

213

124-050000-R14

214

124-090000-R01

Chip inductor / MLF1608DR47K,470nH 10%,0603,ROHS
Chip inductor / MLF1608DR56K,560nH 10%,0603,ROHS
Chip inductor / MLG1608B82N,82nH 5%,0603,ROHS
Chip inductor / FSLM2520-100J,10uH 5%,1008,ROHS
Chip inductor / FSLM2520-R33K,330nH 10%,1008,ROHS
Chip inductor / FSLM2520-R82K,820nH 10%,1008,ROHS
Chip inductor/ LQW31HN17NJ03L,17nH,1206,MURATA,ROHS
Chip inductor/ LQW31HN33NJ03L,33nH,1206,MURATA,ROHS
Chip air-cored coil / 0.4*1.2*3TR,ROHS
Chip air-cored coil / 1.4*2.0*2TR,ROHS
Chip air-cored coil / 0.9*3.0*11TR,ROHS
Chip air-cored coil / 0.9*3.0*6TR,ROHS
Chip bead / EMI,FILTER, SMT,BLM21P300S,0805,ROHS
Chip bead / EMI,FILTER, SMT,BLM41P600SPT,1206,ROHS
Chip bead / EMI,FILTER, SMT,BLM11A601S,0603,ROHS

Temperature Chip resistor / NTH5G16P42B104K07TH,100K,0603,ROHS
Chip crystal resonator / TVCGDCSANF,16.8MHz 2.5PPm ROHS
Chip crystal resonator / ZTACC3.58MG,ROHS
Chip crystal resonator / CSTCR7M30G53-R0,7.3M,ROHS
FFC/FPC Connector / 08 6210 034 340 800,34PIN,P=0.5mm,ROHS

3.5mm Plug-in Speaker-Mic socket / MOTOROLA ,ROHS
2PIN Plug-in Speaker socket / WCPW20-02,ROHS

L41
L42
L34, L38
L40
L49
L50
L3
L35
L51, L54, L55, L56, L57, L58
L9, L10, L11, L28
L19
L18
L64, L72, L73
L25, L26
L1, L4, L23, L24, L32, L33, L39, L59, L60,
L61, L65, L66, L67, L68, L69, L70, L74,
L75, L76, L77
R90, R138
X1
X2
X3
CN4
J1
Cn2

Appendix 3 Structured Part List

Number P/N NAME QTY.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

120-100000-R38B
120-400000-R04
120-400000-R05
121-100000-R19
201-008000-R01A
201-008000-R02A
201-008000-R03A
201-008000-R04A
201-008000-R05A
201-008000-R06A
202-008000-R01B
202-008200-R02A
203-006800-R26
203-007200-R08
203-008000-R01A
203-008000-R02A
203-008000-R03A
203-008000-R05A
203-008200-R03A
203-008200-R05A
204-006800-R01
204-008000-R01A
204-008000-R02A
204-008000-R03A
204-008000-R04A
204-008200-R09A
301-25050J-R01
301-30060G-R01
301-30250D-R01
302-26060D-R01
303-30100G-R01

cable power
wire speaker
cable 34pin
speaker
case front
knob volume
lens display
lens led
bracket display
SR power cable
key rubber
plug speaker hole
spring plate volume knob
nut volume knob
case top Al
case bottom Al
plate metal of cable power
metal dome rubble key
base antenna
shield cover power module
lable display lens
dustproof net speaker
dustproof up case front
dustproof down case front
dustproof case top and bottom
plate grounding with power module
screw m2.5*5
screw m3*6
screw m3*25
screw m2.6*6
screw m3*10

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
6
7
6
5
7

18

Appendix 4 Appendix

PT8000 SERVICE MANUAL

Name
Bracket

Powercable

Hand Microphone MIC

Microphone Hanger

Combination Screw

Self-tapping Screw

Type

KME215

Specification

M4.0*10.0

M5.0*16.0

Accessories

Self-tapping Screw

M4.0*16.0

19

Appendix 5 PT8000 SPARE MECHANICAL PART BOM

PT8000 SERVICE MANUAL

PART NUMBER

ITEM

604-080000-R02

1

203-007200-R08

2

301-25050J-R01

3

604-080000-R01

4

120-400000-R14

5

202-008000-R01B

6

604-080000-R05

7

120-400000-R15

8

301-26060D-R01

9

604-080000-R03

10

201-008000-R06A

11

203-008000-R03A

12

PT8000 SUBASSEMBLY CASE FRONT 604-080000-R01 BOM

ITEM

PART NUMBER

1

201-008000-R01A

2

204-008000-R01A

3

121-100000-R21

4

201-008000-R04A

PT8000 SUBASSEMBLY VOLUME KNOB (604-080000-R02 BOM

ITEM PART NUMBER DESCRIPTION QTY
1 201-008000-R02A KNOB VOLUME 1
2 203-006800-R26 SPRING PLATE 1

DESCRIPTION
SUBASSEMBLY VOLUME KNOB
NUT VOLUME KNOB
SCREW M2.5*5
SUBASSEMBLY FRONT CASE
LINE SPEAKER
KEY RUBBER
SUBASSEMBLY PCB CONTROL
CABLE 0.5*34P*110mm
SCREW M2.6*6
SUBASSEMBLY CASE TOP AL
FASTENER POWER CABLE
METAL PLATE

DESCRIPTION
CASE FRONT
NET DUSTPROOF SPEAKER
SPEAKER
LENS LED

QTY

1
1
6
1
1
1
1
1
5
1
1
1

QTY

1
1
1
1

PART NUMBER

ITEM

202-008200-R02A

13

120-100000-R15

14

301-30100G-R01

15

203-008200-R03

16

102-304452-R01

17

203-008200-R05A

18

204-008200-R10A

19
20

301-30060G-R01

21

604-080000-R04

22

301-30250D-R01

23

ITEM

PART NUMBER

5

201-008000-R03A

6

204-006800-R01

7

PT8000 SUBASSEMBLY CASE TOP AL 604-080000-R03 BOM

ITEM PART NUMBER DESCRIPTION QTY
1 203-008000-R02A CASE TOP AL 1
2 204-008000-R03A STRIP DUSTPROOF B 1
3 204-008000-R02A STRIP DUSTPROOF C 1

DESCRIPTION
PLUG SPEAKER HOLE
CABLE POWER
SCREW M3*10 WITH SPRING PLATE
ANTENNA BASE
POWER MODULE
SHIELD POWER MOUDLE
CUSHION ELECTRIC
PCB MAIN ELEC. PARTS
SCREW M3*6
SUBASSEMBLY CASE BOTTOM AL
SCREW M3*25

DESCRIPTION
LENS WINDOW
LABLE LCD
LABLE LOGO

QTY
1
1
1

QTY

1
1
7
1
1
1
1
1
8
1
6

PT8000 SUBASSEMBLY CASE BOTTOM AL 604-080000-R04 BOM

ITEM PART NUMBER DESCRIPTION QTY
1 203-008000-R01A CASE BOTTOM AL 1
2 204-008000-R04A STRIP DUSTPROOF A 2

20

PT8000 SUBASSEMBLY PCB CONTROL 604-080000-R05 BOM

ITEM PART NUMBER DESCRIPTION QTY
1 PCB CONTROL ELEC. PART 1
2 203-008000-R05A METAL DOME 1

Figure 1 PT8000 Schematic Circuit Diagram

SPEAKER

6

J1 SPK

13.8V

BATTARY

MIC

6

TO ANT

LPF

5

ANT SW

APC

IC4

APC CONTROL

BPF

8T

IC7

TDA1519C

VR1

AF POWER AMP

10K

Number RevisionSize

A3

Title

Date: 2009-1-9 Sheet of

File: X:\PT8000\..\PT800 0 B LOCK DEAGRAM .SchDocDrawn By:

8R

HP

Q26

CTCSS/DCS

SW

Q33

MUTE

IC16

2T

D0D1D2D3DV

TA7808S

IC17

NJM78L05UA

5

BPF

IC5

IC1

RA30H

8R

Q19

MIX

4

8T

Q5

PRE

DRIVE

8T

Q4

RF AMP

TX/RX SW

8T 8R

3

5V

RF AMP

XF1

49.95MHz

Q20

IF AMP

CD1

450KHZ

DET COLL

5V

IC6

IF DEMODULATOR

IC8A IC8BIC8CIC8D

AMP LP LP AM P

8R

CF2

CF1

450KHz

450KHz

AF OUT

AMP

IC10BIC10A

DTMF

DECODER

HP

SW

Q38

IC9C IC9BIC9AIC9D

AMP HP LP LP

LP LP IDC AMP

IC13D IC13AIC13BIC13C

5T

MOD

SW

Q40

8TC

8RC

8R

5V

4

3

Q1 Q2

BUFF

5V

Q21

AMP

NOISE

MOD

D25

DET

RX

TX

Q6

Q14

VCO

2

Q7

BUFF

1

VCO

Q14

RIPPLE

FILTER

5V

LOOP FILTER

5V

3.5V

IC3

UL

A A

PLL IC

MB15E03SL

CKDTUL

*3 2ND LOCAL AMP

X1

TCXO

16.8MHz

QT TCXO

BUSY

8R

Q11

INT

D0

BUSY

SDA

PTT

B B

C C

PF1

PF2

POWER

PF3

PF4

KEY BOARD

X3

7.3MHz

IC15

AT24C08

IC11

CPU

R5F212A8

EEPROM

2

5V

TITEMP

RESET

UL

APC

LE

DTCKPA

E-ALA

MODE

D1D2D3

DV

HOOK

IGN

KEY1 RSSI

2TIN

RXD

TGSW

M-MU

AFCO

A-MU

MD

KEY2

RPTT

SHIFT

TO1

DEV1

DEV2

SCANL

LOWL

RXL

TXL

VCCN

2TOUT SCL

TXD

BLC

MAX

8TC

8RC

SBC

RX

W/N

DATA

CLK

D D

1

21

Figure 2 PT8000 Main Board Schematic Circuit Diagram

J1 SPK

C269

INV

9

M/SS

8

VP

7

OUT2

6

GND2

5

OUT1

4

RR

3

GND1

2

NINV

1

C251*C254

*

R168

*

R167

*

IC10 *

C250

*

*

C253 104

R172 0R

R175

120K

C247

471

10K

R174

470K

7

270K

Aout

IC9 NJM2902V

14

C249

153

R173

4.7K

C256

C245

683

C248 222

D31 *

C252

123

14

R169 180K

Dout

Aout1A-in2A+in3V+4B+in5B-in6Bout

IC8 NJM2902V

22K

R171

R170 180K

C244

683

C255

C246

4.7uF/10V

RSSI

APC

DEV2

SHIFT

RESET

HOOK

32

MR

MR

33

HOOK

DATA

34

CLK

CLK

35

INT

INT

36

TXD

TXD

37

RXD

RXD

38

BLC

BLC

39

8TC

8TC

40

8RC

8RC

41

APC

APC

42

SBC

SBC

43

TGSW

44

PA

PA

45

A-MU

46

M-MU

47

AFCO

AFCO

48

495051525354555657585960616263

TI

R105 47K

C265

*

C260

C259

105

C264

*

R181 *

7

8

V+

Aout1A-in2A+in3GND

Q26

2SC4617

C257

333

C258

153

C263 153

5

6

A-in

A+in

R178 5.6K

R184

5.6K

392

C262 472

C261

104

12

13

D-in

D+in

R183

220K

*

47P

L75

R185 33K

RX

MD

2TIN

RX

MD

2TIN

DATA

TGSW

AF-MUTE

MIC-MUTE

TEMP

BUSY

RSSITINC

BUSY

RSSI

TEMP

*

R194 22K

C268

104

10uF

C271

R196 4.7K

C270

6

Bout

R197

R190

91K

5.6K

R193

C273

4

V+

C267

474

R192

1M

R199

C266 102

11

GND

R198

L63

*

Q27

C272

DV

D3

DV

IC11

KEY1

KEY2

KEY2

KEY1

PTT

27P

L36

56nH

4P

C93

L19

11T

C63

L29

*

D11

L709CE

*

C44

D36

L709CE

C61 10P

C91

101

D9 MA742

C60

2P

C62 0.5P

C43

*

L28

D10

MA742

C48

0.5P

C65

0.5P

C90

101

R47 220R

L18

6T

R46 220R

*

C46

C8222PC81101

C45

6P

L26

C55 471

C66

47uF/25V

BLM41P600SPT

L25

471

C92471

C51

D7 H ZU5ALL

C74

R23 430R

R43

47uF/25V

C372

*

L24

BLM11A601S

R22 430R

2P

C64

471

C79

471

L31

L15

18nH

100R

1K

R19

R30

10R

D13

R34 2.7K

C78 471

C86 471

C75

*

R41

120R

471

C67

L30

L14

18nH

C85 471

100R

1K

R18

R29

10R

470R

C77 471

C84 471

R32

R45 220R

L22

*

R38

*

C76

*

R28

*

*

R17

*

Q8

R25 180R

*

R31

180R

L17

*

L16

4.7K

C54

471

R16

C50

471

C49

471

330R

R14

R33

22R
10K

R13

C89

471

R21

100R

C59

471

C57

471

392

R20

10K

C68

471

R44 270RL27 220nH

C83

104

R26 100R

2SK508NV(K52)

Q6

C71

471

C87

471

L21 220nH

C39 10P

C70

1P

R36

270K

R42

270K

C69

1P

D8

R39

4.7K

1SV278

C41 0.5P

D6 HVC376B

L23

BLM11A601S

TX OR RX H:4.0V

C80 10P

R27

150K

C88

471

2SC5108

Q7

18nH

C53

10P

R37

22R

C73 5P

L20

18nH

C72 5P

C52

471

C42 4.7uF/10V

C58

102

8

5

7

6

4

DO

FIN

VCC

GND

XFIN

CLOCK9DATA10LE11PS12ZC13LD/FOUT14P/15R/

R40

100K

R48

MA2S111

D12

R15 10K

R24 10K

R35 10K

CK

C100

33P

*

R72

0R

C152

R53

22K

2T

R52

22K

C94

15P

C98

C99

C97 22P

330R

C102103

Q9

C101

471

L32

BLM11A601S

C95

471

C96

104

L33

BLM11A601S

R51

560R

R55

R54 560R

3

VP

1K

R49

15K

R50 15K

R56

0R

C104

5

6

8

7

V+

B-in

Bout

B+in

R60 100K

R64

100K

*

D15 MA2S111

R59 27K

C119

471

22P

C115

101

C110

471

101

C121

103

R63

150R

DTC144EE

DA221

R58 680R

R62 10K

R65

C111 0.5P

R61 240R

L37 3.3uH

C107

4P

L35

39nH

C118

12P

C106

15P

D14

HVC376B

L34

82nH

C109

0.1uF/35V

C117

1uF/16V

R57

2.7K

560R

C113

0.1uF/35V

C116

471

R66

2

1

OSCIN

OSCOUT

IC3

MB15E03SL

16

C108

101

C103

101

C112

101

C105

101

C114 101

15K

R80 10K

Aout1A-in2A+in3GND

IC4 NJM2904

4

C136

471

R67

100K

R73

330K

R87

*

R81 10K

C157

471

C373

47uF/25V

C230

392

Q10

C128

R68

10K

Q13 2SC4116

C123

471

4P

C126

3P

C124

Q12 2SK508NV(K52)

C122

10P

L38 82nH

C127

D16

HVC376B

D18

HVC376B

D17

C125 333

C130

Q11

R69

C129

0R

16.8MHz

L39

BLM11A601S

R90

100K

T

R75

47K

R83

1K

R79

10K

R89

47K

C160

TX:L TX OFF:H

L46

*

C162

L45

18nH

C161

D19HSC277

L78

BLM11A601S

DTC144EE
471

C137

15uF/6.3V

10K

C153

103

C151

471

10K

Q14 2SC4617

R74

C149

15uF/6.3V

C148

471

*

HVC376B

16.8*3 MHz TX:H RX:L

C141

*

C135 0R

33P

L44

220nH

C147 33P

C1340RL43

*

C146 *

C140

331

L41

470nH

C133 103

471

L42

C142

R82 10R

560nH

2SC5108

200K

C150

*

47P

C139

10P

R70

1K

R86

12K

L40

10uH

393

C156

C138

10P

R85

0R

*

C155

X1

16.8MHz

R84

0R

GND

OUT

2

3

C159

4.7uF/10V

VC

VCC

1

4

R88

C131

4.7uF/10V

R71

C132

15K

C145

103

R78 1KR77820R

C154

182

C144

104

10R

C143

471

C158 182

R76

820R

681

Q16

471

2SK1829

TEMP
TGSW

R93

180K

RSSI

L47

68nH

C166

5P

*

C167

102

C164

0R

6P

C163

R92

100K

2P

*

C165

R91

4.7K

2LO

R94 6.8K R9 5 6.8K

W:H N:L

W:L N:H

RX

Q15

DTA144EE

W:H N:L

Q36

DTA144EE

R280

10K

W/N
BUSY

L76 BLM11A601S

2LO

VCCN

CN1

TO ANT

6

L11

2T

L9

2T

C14 2P C15 4P

C29

102

D3

L709CE

L10

2T

POUT

VDD

C28 22P

C37 101

101

VGG

C27 22P

C36

PIN

5

R8

12R

IC1 RA30H4047M

4

3

2

1

C40

C26 102

*

L6

C31 6P

Q5

2SC3357

C30 6P

Q4

2SC3357

C25

471

471

C23 471 C24

R7 33R

C22 471

C19

471

D2

HSC277

4.7K

R5

C7 10P

L7

22nH

R1

2.7K

Q2

2SC5108

C13 15P

C6

33P

L8

22nH

R6

150K

Q1

2SC5108

C364

392

C371

R1210K

C5 1P

Q3 2SC4116

C4 1P

R4 150R

C47

471

L5 3.3uH

C34 5P

C10 5P

4P

C32

L3

23nH

C16

12P

L12 220nH

C2

12P

D1

D4

HVC376B

HVC376B

HVC376B

D5

L2

180nH

C18

333

R9

1K

C38 471

L13

C35 3P

C33 103

C17 104

C3 471

R3

10R

L1 BLM11 A601S

C8 4.7uF/10V

C20

471

R2 10R

C12

471

L4

C11

471

BLM11A601S

R11 150K

C1 4.7uF/10V

3.5V

OUTIN

IC2

XC62FP3502PR

C9 471

UNLOCK:0V

R10 10K

ULLEDT

C199 *

C168

L57 3T

L54 3T

C201 *

D27

HVC376B

C205 10P

C177

2P

*

R137 1M

R122

4P

D24

L58 3T

C208 *

10P

R133 1M

HVC376B

C194

D28

C174

471

L52

0R

C223

R118

68K

R123 100K

Q18

3SK318

R115

220R

R103

22R

C196

102

R104

*
68nH

C195

102

C214

102

L53

L61BLM11A601S

C200 1P

C169

471

L51

3T

D26

HVC376B

C204 18P

R132

1M

C176

0.5P

R128 1M

C203 1P

C21

D23

HVC355B

15P

R131

1M

3T

L56

R98

36K

R96

470K

D22

R97

56K

R101

XF2

XF1

R100

R99

L48 1uH

D21

CF1

450KHz HT

D20

C56

105

Q17

DTC144EE

DTC144EE

Q37

HVC376B

C198

D30

C202 *

C175

1P

8P

MA2S111

R130

3T

1M

L55

HVC376B

C197

D29

R117

100K

471

C178

R125

56K

C186

104

Q19

3SK318

C207

471

150R

R111

C193

*

L49

C1928PR107

*

0.82uH

L50

0.82uH

L59

BLM11A601S

C191

103

471

C185

C171

102

C218

471

C180

*

100R

49.95MHz

C190

15P

49.95MHz

470R

C179

*

C170

102

560K

Q20

2SC5108

R121 100R

R102

C209

*

*

C182

*

104

C173

DAN222

C217

R120

*

R114 6.8K

CF2 450KHz F

*

R119

6.8K

R113

C221 102

C212 102

DAN222

R109 22K R 110 22K

C172

104

R1450R

R136

1K

Q22

DTC144EE

C120

105

C188

102

C228

*

R108

330K

R124

3.3K

C222

R135

56R

Q21 2SC4617

C206

102

C187

104

C213

104

102

D25

MA742

C189

T

C181

334

R138 100K

R112

10K

R129

47K

R296

104

L60

C184

104

BLM11A601S

C216

4.7uF/10V

C211

104

R106

22K

R116

*

C183

104

C210 104

R134

330K

17

15

18

16

EST

VDD

RT/GT

VP1VN2GS3VREF4INH5PWDN6X17X28VSS

IC5 HT9172

R127

47K

R126

47K

C215

471

R147

1M

C238

C220 471

471

R141

270K

R143

180K

C226

4.7uF/10V

471

IC6

TA31136

182

XIN

MIXI

1

XOUT

GND

2

MIXOUT

NREC

3

VCC

NDET

4

IFI

RSSI

5

DEC

IFO

6

R140150K

FILO

QUAD

7

FILI8AF

102

R233

10K

3.3K

C370

R142

R177

27K

L62 0R

C224

*

C227 *

471

R151

33K

10

14

D011D112D213D3

OE

DV

223

R156

33K

C239

223

R157

33K

IC7 TDA1519C

C243 *

R166

R165

C232

33P

C235

104

16
15
14
13

C234

82P

CD1

12
11
10

9

2.7K

R148

3.3K

R146

C231

102

W:L N:H

C233

2.2uF/10V

R150

120K

R149

0R

VR1

68K

R189

*

R186

0R

C236

*

R191

4.7K

C357

683

R164

C24450

1.2K

R152

Q23

DTA144EE

R159

3.3K

C237

C242

103

2.2uF/10V

R155

15K

R163

43K

Q25

DTC144EE

27K

R161

43K

R160

R153

22K

VR2

47K

DEV1

Q24

DTC144EE

R162

C241

*

15K

R158*R154

*

TO0

C240

*

R195 4.7K

TO1

C358

683

DV
D3
D2
D1
D0

9

R139

1M

X2

3.58MHz

C225

39P

C229

39P

-

+

DC1

CN2

CN2

CN5

CN4

123

4

R253

*

C355

*

R256*

C367

*

103

Q32 2SC4919

0R

R255

D33

DAN222

C299

*

R247

100R

D32

1SS372

R244

6.8K

C307

10P

R249

33K

R245 12K

5

6

7

B-in

Bout

Cout8C-in9C+in10GND11D+in12D-in13Dout

IC13NJM2902V

C305

471

R259

18K

C301

392

R258

56K

C306 473

Q34

105

C303

105

R2570RR248

0R
*

R251

R252

0R

105

Q31

2SC4617

C304

Q47

Q46

2SK1824

Q33

2SK1824

R243

560K

R254

R144

*

R246

*

C365

*

R286

10K

R287

10K

5

C300 104

OUT1VDD2GND

IC14

3

*

R182

C302

*

MODET2TXDT5VCCT3RXDT4RESET

T1

MODE

TXD

INT

SCANL
DEV2

DEV1

TO1
TO0

SDA

SHIFT

XIN

SCL

XOUT
RESET
SDA
SCL

MODE

E-ALA
IGN

C336

105

C335

105

CN3

C316*

L69

BLM11A601S

C325

104

820R

TX MUTE:H

R271

100K

C326

471

2.2uF/10V

C313

R274

68K

104

C319

C321

222

3.9K

683

C320

C308

104

R279

R277

560K

223

C322

R267 1.2K

R263

56K

R278

39K

4

1

3

2

V+

A-in

Aout

B+in

A+in

L70

14

C310

471

R272

15K

C324

821

R276

*

392

C314

68K

R275

56K

R264

C323 105

R273 *

2SK1824

R270

1K

L79

*

C317

471

C311

102

R2605.6K

R262

*

0R

R268

R294

47K

DTC144EE

R293

47K

MAX AF:L

C312

105

C309

471

1K

C366

*

L73

BLM21P300S

NC4NC

*

IC15

AT2408N

GND4SDA

R269 100K

5

R266 1K

A2

SCL

3

6

*

A1

TEST

2

7

R265*R200

A0

VCC

1

8

C315

471

CN3

1

2

123

C368

*

R250

*

C297

VR3

*

R235 1K

R242

0R

R238

R240

*

R237

R201 1K

Q28

L64

C274

471

105

C375

C374

C277

R205

105

10K

C295

104

C283

471

Q30

2SK1824

DTC144EE

BLM21P300S

W:H N:L

5.6K

R241

105

C294 473R232 56K

R297 *

2SK1824

Q49

R299

47K

105

47K

R300

Q50

DTC144EE

R234

*

*

R229 0R

C298

R236

100K

27K

R2311KR239

100K

Q45 2SK182 4

R211

*

R214 *

R227

*

R203 *

5

B-in

B+in

R218 *

R226

*

4

C289

0R

C287 *

0R

C280

105

R212

5.6K

R223

0R

333

C276

220K

R202 390K

R213

C292

*

153

R215

22K

R222

0R

L67

BLM11A601S

1

3

2

B-in

Bout

B+in

Cout8C-in9C+in10GND11D+in12D-in13Dout

C293

471

R221

180K

R216

270K

Q29

DTA144EE

R209 680K

W:H N:L

R204 470K

C290 1uF/10V

18K

C279 471

R217

R21010K

100K

C288 393

C284 103

R208 100K

8

10

9

R225

100K

C-in

Cout

C+in

7

R220

390K

C282 221

R207

18K

18K

R224

82K

C286

4.7uF/10V

C285

471

R228

10K

BLM11A601S

471

C296

R230 330K

5

3P

C275

R206

22P

D0

D1D2D3

D2

D1

D0

R5F212A8

PTT

RPTT

RPTT

OUT4VCC

X3

7.3MHz

NC1VEE12VEE2

L66

BLM11A601S

3

IC12 PST9140NR

1K

C28122P

R219

10R

XOUT

XIN

UL

CK

LE

DT

LOWL

RXL

TXL

171819202122232425262728293031

UL

LE

DT

CK

SCL

TXL

RXL

16

LOWL

DEV2

15

DEV1

14

TO1

13

TO0

12

SHIFT

11

VCC

10

XIN

9

VSS

8

XOUT

7

RESET

6

SDA

5

SCL

4

MODE

3

E-ALA

2

IGN

1

VCCN

AVSS

W/N

VREF

AVCC

MAXAF

DTMF

R180

*

64

4.7K

VCCN

W/N

MAX

2TOUT

R179

R176

*

L77BLM11A601S

C278

105

C369 471

C291

105

L65 BLM11A601S

L68

BLM11A601S

13.8V

C334

104

E-ALA

C333

103

RPTT
RAFOUT

C332

471

AFCO

C331

2TOUT
MIC

470uF/25V

D34

DSM3MA1

R281

10D220

M-MU

C327

10uF/6.3V

C328 471

BLM11A601S

W/N

PA

R261 *

R295

Q35

C318

DTA144EE

C219

Q48

*

AFOUT

IGN

2TIN

MAX

R291

L72

BLM21P300S

D35

C330

103

C329

104

Q41

*

F1 3A

AFIN

C344

47uF/25V

C343

471

A-MU

OUT IN

IC17 NJM78L05UA

RAFOUT

C342

471

10K

R283

C346

R290

4.7K

L71

*

Q39 2SA1641

C341

47uF/25V

C340

471

OUT IN

W/N

IC16 L78 08CV

C339

471

C345

R289

4.7K

R285 10K

Q40 KTA1298

C338

104

R284

10K

R288

4.7K

Q38

KTA1298

C337

104

8TC
8RC
SBC

TI

CLK
DATA

KEY2
KEY1

SCANL
LOWL
RXL
TXL
MR

RXD
TXD

MODE

AFOUT
AFIN

BLC

R187

4.7K

PTT

MIC
ME
HOOK
MD

0R

R282

L74

BLM11A601S

*

*

*

*

*

4.7uF/10V

Q42

4.7uF/10V

Q43

PT8000-02(400-450MHz)

机型版本审核

主板电原理图名称

C347

*

DTC144EE

DTC144EE

Q44

DTC144EE

文件号设计批准

C348 471

R292

1K

C362 101
C361 101
C360 101
C359 101

C356 101
C363 101

35
34
33
32
31
30
29
28
27

R188 1K

26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

C354 101
C353

101

C352 101
C351 101
C350

101

C349 101

1

6

/

1

第张 张共

5

4

3

2

KEY2
KEY1
GND
GND
SCANL
LOWL
RXL
TXL
MR
CLK
DATA

GND
VCC
RESET
NC
RXD
TXD
NC
MODE

GND
AFOUT
AFIN
GND

BLC
B
B
GND
PTT
ME
MIC
ME
HOOK
MD
GND

1

CN4

CN34

A A

B B

C C

D D

22

Figure 5 PT8000 Keyboard Schematic Diagram

8

R25

220R

Q3

*

D10 RED

R4

0R

7

6

C2

5

dp

5

g

dp

10

f

9

e

cde

1

d

2

g

c

b

f

4

b

6

a

a

7

COM3COM

IC1 SEG-0.5

8

R35

*

R3

4

0R

Q5

FMMT591

Q4

DTC144EE

R21 220R
R20 220R
R19 220R
R18 220R
R17 220R
R16 220R
R15 220R
R14 220R

L2

BLM11A601S

IC17

NJM78L05UA

OUTIN

C1

471

R27

10K

R10

10R

C39

C38

*

471

L1

D9 *

D8 GREE N

D7 GREE N

D14 GREEN

D13 GREEN

*

IC2

74LS164

GND7CP

8

Q3

MR

9

Q2

Q4

10

Q1

Q5

11

Q0

Q6

12

B

Q7

13

A

VCC

14

471

D3

GREEN

D4

GREEND6GREEN

3

330R

D2

D1

GREEN

R1 330R

R2

VR1

10K

2

C19

*

R34

0R

R5

10K

R24

220R

Q2

*

C18

*

R33

0R

R23

470R

Q7

*

C37

*

R39

0R

R22

470R

Q6

*

C36

*

R38

0R

C30 101

R8 0R

C29 101

R7 4.7K

C10 101

R6 20K

6
5

4
3
2

1

C20

*

C21 101

C22 101

C23 101

C24 101

C25 101

C26

471

Q1

DTC144EE

D5

GREEN

GREEN

R11 220R

R12 220R

R13 220R

3

1

MD

CN1 RJ45

5

4

2

ME

PTT

MIC

HOOK

R9

10K

R37

*

C33 101

R32 0R

C32 101

K2 P2 K3 P3

K1 P1

R29 4.7K

R28 20K

K4 P4 K5 P5 K6 POWER

C31 101

PT8000

机型版本审核

C12

101

C17

101

C16

101

C15

101

C14

101

C13

101

C11

101

C34

101

C35

101

R36 4.7K

R31 220R
R30 220R

POWO

C27 101

C28 101

R26 220R

6

7

8

B

BLC

GND

POWI

C9

101

C8

101

C7

101

C6

101

C5

101

C4

101

C3

101

KEY2

1

KEY1

2

DOWN

DOWN

3

UP

UP

4

SCANL

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

35

CN2

CN34

按键板电原理图名称

LOWL
RXL
TXL
MR
CLK
DATA

GND
VCC
RESET
POWO
RXD
TXD
POWI
MODE

GND
AFOUT
AFIN
GND

BLC
B
B
GND
PTT
ME
MIC
ME
HOOK
MD
GND

8

1

7

/

1

第张 张共

6

5

4

文件号设计批准

3

2

1

A A

B B

C C

D D

1

25

Figure 6 PT8000 Top Keyboard Position Mark Diagram

26

Figure 7 PT8000 Bottom Keyboard Position Mark Diagram

27