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TK-868G车台使用维修手册

TK-868G

使用维修手册

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TK-868G车台使用维修手册

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UHF FM TRANSCEIVER / UHF

B51-8566-00

(

)

617

TK-868G

SERVICE MANUAL /

Panel assy

(A62-0642-03)

Key top

(K29-5343-02)

128 channels / 128

GENERAL ................................................................. 2

INSTALLATION ........................................................ 3

PARTS LIST .............................................................. 8

EXPLODED VIEW .................................................. 17

PACKING ................................................................ 18

ADJUSTMENT ....................................................... 19

LEVEL DIAGRAM ................................................... 35

PC BOARD VIEWS

DISPLAY UNIT (X54-3270-10) .......................... 37

PLL/VCO (X58-4670-16) ................................... 38

TX-RX UNIT (X57-5963-09) (A/2) ..................... 39

TX-RX UNIT (X57-5963-09) (B/2) ..................... 45

SCHEMATIC DIAGRAM ........................................ 49

BLOCK DIAGRAM .................................................. 53

SPECIFICATIONS ................................................... 56

CONTENTS

SUPPLEMENT /

This TK-868G service manual contains a number of sec-

tions which differ from the service manual (B51-8500-00)

for the TK-868G.

For items other than those in this TK-868G service

manual please refer to the service manual (B51-8500-00)

for the TK-868G.

TK-868G

Self Programming Mode

Write mode for frequency data and signalling etc. Mainly

used by the person maintaining the user equipment.

■ Enter to the Self Programming Mode

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

enter the self programming mode, “SELF” is displayed.

 Flow chart 

REALIGNMENT /

Service Manual List

Title Parts number Remarks

Destination

TX-RX unit

PCB number

TK-868G B51-8500-00 C,C3 J72-0678-02

TK-868G B51-8502-00 M,M3 J72-0678-02

TK-868HG B51-8541-00 SUPPLEMENT C J72-0760-02

TK-868HG B51-8541-10 REVISED C,C3 J72-0760-12

TK-868G B51-8566-00 SUPPLEMENT C6 J72-0760-22

This Service manual

Frequency range C,M : 450~490MHz

C3,M3 : 400~430MHz

C6 : 350~390MHz

[]

[MON]

Channel set mode

Function set mode

Self programming mode

Note :

This mode (self programming mode) cannot be set when

it has been disabled with the FPU.

TK-868G

Ignition Sense Cable (KCT-18 : Option)

The KCT-18 is an optional cable for enabling the ignition

function. The ignition function lets you turn the power to the

transceiver on and off with the car ignition key.

If you use the Horn Alert function or the Manual Relay

function, you can turn the function off while driving with the

ignition key.

 Connecting the KCT-18 to the Transceiver

1. Install the KCT-19 in the transceiver.

2. Insert the KCT-18 lead terminal ( ) into pin 3 of the square

plug ( ) supplied with the KCT-19, then insert the square

plug into the KCT-19 connector ( ).

KCT-18

KCT-19

Contact /

Fig. 1 /

 Modifying the Transceiver

Modify the transceiver as follows to turn the power or the

Horn Alert or Manual Relay function on and off with the igni-

tion key.

1. Remove the lower half of the transceiver case.

2. Set jumper resistors (0Ω) R134 and R135 of the TX-RX unit

(A/2) as shown in Table 1.

TX-RX UNIT

(A/2)

ANT

KCT-19

CN2

R134

R133

R135

Fig. 2 /

Operation when KCT-18 R134 R135

is connected

Yes Yes KCT-18 cannot

Power on/off and Horn No Yes be connected

Alert or AUX-A on/off

Horn Alert or AUX-A Yes No

on/off

No No Power cannot

be turned on

Table 1 R134 and R135 setup chart

INSTALLATION /

TK-868G

INSTALLATION /



CN1

CN2

KCT-19

Cushion /

(G13-1710-04)

CN3

CN7

CN3

Fig. 3 /

PA/HA Unit (KAP-1 : Option)

 Installing the KAP-1 in the Transceiver

The Horn Alert (max. 2A drive) and Public Address func-

tions are enabled by inserting the KAP-1 W1 (3P; white/black/

red) into CN3 on the TX-RX unit, inserting W2 (3P; green) into

CN7 on the TX-RX unit, and connecting the KCT-19 (option) to

CN2 and CN3 of the KAP-1.

 Installation procedure

1. Open the upper case of the transceiver.

2. Insert the two cables ( ) with connectors from the KAP-

1 switch unit into the connectors on the transceiver.

3. Secure the switch unit board to the chassis with a screw

( ). The notch ( ) in the board must be placed at the

front left side.

4. Attach the cushion on the top of the KAP-1 switch unit.

3 2

 Modifying the Transceiver

 Horn alert

The signal from pin 4 of IC9 on the TX-RX unit turns Q5

and Q1 on and off and drives KAP-1 HA relay K2 to drive the

horn with a maximum of 2A.

The default output is HR1. The relay open output can be

obtained between HR1 and HR2 by removing R1 in the KAP-

R1 Output form

HR1 (Default) Yes

HR2 No

HR1

HR2

Fig. 4 KAP-1 foil side view



HR1

HR2

TK-868G

INSTALLATION /

 Public address

The signal from pin 13 of IC9 on the TX-RX unit drives PA

relay in the KAP-1 and switches the audio power amplifier

output between the external PA system (through KCT-19) and

internal and external speakers.

To use the PA function, R153 on the TX-RX unit must be

removed.

R153

Use the PA function No

Do not use the PA function Yes

TX-RX UNIT

(A/2)

KCT-19

CN2

Q19

R122

R153

ANT

Fig. 5 /



 Others

If the PA and HR2 are not necessary and the speaker out-

put is output to an external unit through the KCT-19, connect

the KCT-19 C connector to CN8 on the TX-RX unit.

R21

IC9

Shift

IGN

KAP-1 (SWITCH UNIT : X41-3380-20)

HOR

PA/LI

SPO

SPI

CN1

HR2

CN2

HR1

CN3

PAO/LIO

R1 0

C5 1000P

1000P

C3 0.01

1000P

R3 0

R4 0

1000P

C4 0.01

Q1 : DTD114EK

D1,2 : 1SS193

CN3

CN7

R153

Audio

power amp

IC13

CN8

Internal/External

speaker

TX-RX UNIT

BRN

ORG

YEL

GRN

KCT-19

13 10 1

KCT-19 Terminal

6 : Earth

10 : HR1

12 : PA (HR2)

Fig. 6 /

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