建武TK-760G/762G维修手册：M67741H功放电路详解

tk760g

维修手册

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本篇文档是建武TK-760G/762G/(N)型号的VHF业余无线电通信接收器服务手册，英文版本且具备高清原版非扫描特性，提供了优秀的可缩放性，包括点位图和彩色原理图，便于技术人员进行维修和理解。服务手册特别强调了对于M67741H功放模块的电路设计，这在设备维护过程中可能至关重要。手册的出版日期为2003年，适用于有经验的熟悉类似商业级通信设备的技术人员。它包含了设备所需的全部服务信息，并且在发布时是最新的，后续的任何改动都会通过服务备忘录或手册修订来更新。因此，在订购替换零件或查询设备信息时，必须确保提供完整的部件编号，包括组件、套件或机壳号，以及对所需组件的详细描述以便准确识别。手册的首部分为"PERSONNEL SAFETY"，强调了操作人员在维修过程中的安全事项，提醒读者在操作前应遵循适当的防护措施，确保个人安全。这部分内容涵盖了基本的电气安全规则、设备操作指南以及在故障排除时可能遇到的风险防范措施。手册的主体部分分为"CONTENTS/GENERAL"，包括"INTRODUCTION"（介绍）和"SCOPE OF THIS MANUAL"（手册范围），介绍了该设备的功能概述、目标读者群以及手册的目的。随后的内容可能会详细阐述技术规格、安装与拆卸步骤、故障诊断方法、维修流程图、电路图解析以及常见问题的解决策略。此外，手册还提供了部分具体组件的型号信息，如Panelassy (A62-0731-03)、Keytop (K29-5344-02)和不同的机壳版本，这些是维修过程中可能需要用到的替换部件。值得注意的是，手册经过了修订，这意味着它可能包含对先前版本的改进和优化。建武TK-760G/762G/(N)维修手册是一个重要的资源，对于设备维护工程师和爱好者来说，它不仅提供了实用的维修指导，也是深入理解设备内部工作原理和技术细节的关键工具。无论是初次接触该设备的用户还是经验丰富的技术人员，这份手册都能提供详尽的参考资料和支持。

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TK-760G/

(

)

/762G/

(

)

REALIGNMENT

5-4. Programming Software KPG-67D Description

The KPG-67D is programming software for the trans-

ceiver supplied on two 3.5" floppy disks. This software runs

under MS-DOS 3.1 or later on an IBM-PC or compatible ma-

chine.

The data can be input to or read from the transceiver and

edited on the screen. The programmed or edited data can

be printed out. It is also possible to tune the transceiver.

We recommend that install the KPG-67D for example to

harddisk first then use it.

6. Firmware Programming Mode

6-1. Preface

Flash memory is mounted on the TK-760G/762G. This

allows the TK-760G/762G to be upgraded when new fea-

tures are released in the future. (For details on how to ob-

tain the firmware, contact Customer Service.)

6-2. Connection Procedure

Connect the TK-760G/762G to the personal computer

(IBM PC or compatible) with the interface cable (KPG-46).

(Connection is the same as in the PC Mode.)

6-3. Programming

1. Start up the programming software (KPG-67D), select

“firmware program” in the “Program” item, and press

the Return key on your personal computer. This starts up

the firmware programmer.

2. The top screen is displayed. Press any key to advance to

the next screen.

3. Set the communications speed (normally, 57600 bps)

and communications port in the Setup item.

4. Set the firmware to be updated by File select (=F1).

5. Turn the TK-760G/762G Power ON with the [CH

]

switch held down. Hold the switch down for two sec-

onds until the display changes to “PROG 576”, the

BUSY/TX LED lights orange. When “PROG 576” ap-

pears, release your finger from the switch.

6. Check the connection between the TK-760G/762G and

the personal computer, and make sure that the TK-760G/

762G is in Program mode.

7. Press F10 on the personal computer. A window opens

on the display to indicate the writing progress. When the

TK-760G/762G starts to receive data, the BUSY/TX LED

lights green.

8. If writing ends successfully, the LED on the TK-760G/

762G goes off and the checksum is displayed.

(Since the TK-762G does not have a display, check the

checksum with the FPU (KPG-67D).)

9. If you want to continue programming other TK-760G/

762G, repeat steps 5 to 8.

4. Check Sum

Executing this function, “TUNING” apears on the display

of the TK-760G while calculation the check sum.

When the calculation is completed, the display returns to

normal and PC displays the check sum of the radio.

5. PC Mode

5-1. Preface

The TK-760G/762G transceiver is programmed using a

personal computer, a programming interface (KPG-46) and

programming software (KPG-67D).

The programming software can be used with an IBM PC

or compatible. Figure 1 shows the setup of an IBM PC for

programming.

5-2. Connection Procedure

1. Connect the TK-760G/762G to the personal computer

with the interface cable.

2. When the Power is switched on, user mode can be en-

tered immediately. When the PC sends a command, the

radio enters PC mode.

When data is transmitted from transceiver, the red LED

blink.

When data is received by the transceiver, the green LED

blink.

Notes :

• The data stored in the personal computer must match

model type when it is written into the flash memory.

• Change the TK-760G/762G to PC mode, then attach the

interface cable.

5-3. KPG-46 Description

(PC programming interface cable : Option)

The KPG-46 is required to interface the TK-760G/762G

with the computer. It has a circuit in its D-subconnector (25-

pin) case that converts the RS-232C logic level to the TTL

level.

The KPG-46 connects the modular microphone jack of

the TK-760G/762G to the computers RS-232C serial port.

KPG-46

IBM-PC

KPG-67D

TK-760G/762G

Fig. 1

TK-760G/

(

)

/762G/

(

)

REALIGNMENT

Cloning cable

(E30-3382-05)

Fig. 2

MBL

PSB

GND

PTT/TXD

MIC

HOOK/RXD

GND

REMOTE/TXD

PTT/RXD

Clone cable

E30-3411-05 (TK-760G → TK-260G/270G)

you press the [SCN] key, the currectly selected number is

determined, and the display shifts to the left. If you

press the [SCN] key after entering the password in this

procedure, “CLONE” is displayed if the entered pass-

word is correct. If the password is incorrect, “CLN

LOCK” is redisplayed.

4. Power on the slave TK-760G.

5. Connect the cloning cable (No. E30-3382-05) to the

modular microphone jacks on the master and slave.

6. Press the [SCN] key on the master while the master dis-

plays “CLONE”. The data of the master is sent to the

slave. While the slave is receiving the data, “–PC–” is

displayed. When cloning of data is completed, the mas-

ter displays “END”, and the slave automatically operates

in the User mode. The slave can then be operated by the

same program as the master.

7. The other slave can be continuously cloned. When the

[SCN] key on the master is pressed while the master dis-

plays “END”, the master displays “CLONE”. Carry out

the operation in step 4 to 6.

Note :

You can clone the programmed data between the trans-

ceiver frequency version must be same.

Notes :

• To start the Firmware Programmer from KPG-67D, the

FPRO path must be set up by the KPG-67D setup.

• This mode cannot be entered if the Firmware program-

ming mode is set to Disable in the Programming soft-

ware (KPG-67D).

• When programming the firmware, it is recommend to

copy the data from the floppy disk to your hard disk be-

fore you update the radio firmware.

Directly copying from the floppy disk to the radio may not

work because the access speed is too slow.

6-4. Function

1. If you press the [MON] switch while “PROG 576” is dis-

played, the checksum is displayed. If you press the

[MON] switch again (while the checksum is displayed),

“PROG 576” is redisplayed.

2. If you press the [A] switch while “PROG 576” is dis-

played, the display changes to “PROG 192” to indicate

that the write speed is low speed (19200 bps). If you

press the [A] switch again while “PROG 192” is dis-

played, the display changes to “PROG 384”, and the

write speed becomes the middle speed (38400 bps). If

you press the [A] switch again while “PROG 384” is dis-

played, the display returns to "PROG 576".

Note :

TK-762G indicate

19200 bps : The LED flashes green and red alternately.

38400 bps : The LED flashes orange.

57600 bps : The LED lights orange.

Normally, write in the high-speed mode.

7. Clone Mode (TK-760G only)

Programming data can be transferred from one radio to

another by connecting them via their modular microphone

jacks. The operation is as follows (the transmit radio is the

master and the receive radio is the slave).

1. Turn the master TK-760G power ON with the [

] key

held down. If the password is set to the TK-760G, the

TK-760G displays “CLN LOCK”. If the password is not

set, the TK-760G displays “CLONE”.

2. When “CLN LOCK” is displayed, only the [CH

/ ] key

and [SCN], and [0] to [9] keys can be accepted. When

you enter the correct password, and “CLONE” is dis-

played, the TK-760G can be used as the cloning master.

The following describes how to enter the password.

3. How to enter the password with the microphone keypad;

If you press a key while “CLN LOCK” is displayed, the

number that was pressed is displayed on the TK-760G.

Each press of the key shifts the display in order to the

left. When you enter the password and press the [SCN]

key, “CLONE” is displayed if the entered password is

correct. If the password is incorrect, “CLN LOCK” is

redisplayed.

How to enter the password with the [CH

/ ] key;

If the [CH

/ ] key is pressed while "CLN LOCK" is dis-

played, numbers (0 to 9) are displayed flashing. When

8. Self Programming Mode (TK-760G only)

Write mode for frequency data and signalling etc. Mainly

used by the person maintaining the user equipment.

TK-760G/

(

)

/762G/

(

)

9. Channel Setting Mode

Each channel can be setup in its action mode by using

the panel keys.

•Pressing [MON] when “SELF” is diaplyed, sets channel

setting mode.

• Select an item set using [

] then change the selection

with the [CH

/ ].

• The data displayed using [D/A] is stored in the memory

and then proceeds to the next item.

• Pressing [

] proceeds to the next item without storing it

in the memory.

• Press [MON] to set the display to “SELF” and return to

reset (default) status.

The setup items for channel setting mode are listed be-

low.

No. Function

Choices Display Remarks

Select 1~128 __1-__1._ [ ] : Group selection/

channel __1-128._ Channel selection

Select 1~128 __1.-__1_ change

group 128.-__1_

1RX Step STP__250 Display when an item

frequency

2.5kHz~1MHz STP___1M is selected or when a

step is changed

(about 0.5 seconds)

[A] : Step change

5.0, 6.25kHz, 1MHz step

Blank R. - - - - - - - [ ] : Frequency on/

100.0000~ R.150.0000 blank switching

550.0000MHz The right most dot

indicates 50Hz digit

(On=5, Off=0)

2RX Off - - - - - - - - [ ] : Off/QT/DQT

signalling

QT 67.0~250.3Hz

QT__67.0_ switching

(EIA mode) QT_250.3_ [A] : Mode switching

QT 67.0~254.1Hz

QT__67.0* [SCN] : Normal/

(0.1Hz step mode)

QT_254.1* Inverse switching

DQT 000~777 DQT000N*

(Normal) DQT777N*

(1 step mode)

DQT 023~754 DQT023N_

(Normal) DQT754N_

(Standard table mode)

DQT 000~777 DQT000I*

(Inverse) DQT777I*

(1 step mode)

DQT 023~754 DQT023I_

(Inverse) DQT754I_

(Standard table mode)

3TX Step STP__250 Display when an item

frequency

2.5kHz~1MHz STP___1M is selected or when a

step is changed

(about 0.5 seconds)

[A] : Step change

5.0, 6.25kHz, 1MHz step

REALIGNMENT

IC502

TX-RX unit B/2

Foil side

IC505

D507

D505

Fig. 3

8-1. Enter to the Self Programming Mode

Remove D507 (Figure 3) from the TX-RX unit. Hold down

the [A] key and turn the power switch on. When enter the

self programming mode, “SELF” is displayed. The mode

changes autoically to Model Select Mode in about one sec-

ond, and set up radio type, radio band & channel type and

frequency version.

Note :

This mode (self programming mode) cannot be set when

it has been disabled with the FPU.

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