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© 2000-6 PRINTED IN JAPAN
B51-8538-00 (N) 1738
VHF FM TRANSCEIVER
TK-760HG/762HG
SERVICE MANUAL
SUPPLEMENT
Microphone
(T91-0597-25)
Cabinet (Upper)
(A01-2165-13)
Panel assy
(A62-0642-03)
Key top
(K29-5343-02)
Microphone
(T91-0597-25)
Cabinet (Upper)
(A01-2165-13)
Panel assy
(A62-0731-03)
Key top
(K29-5344-02)
TK-760HG (K)
TK-762HG (K)
This service manual mainly covers TK-760HG K, M and TK-762HG K.
If information you require is missing from this service manual.
Please refer to the B51-8497-10 service manual.


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2
TK-760HG/762HG
CONTENTS
OPERATING FEATURES ................................................................................................. 3
REALIGNMENT ................................................................................................................ 4
INSTALLATION ................................................................................................................ 5
PARTS LIST ...................................................................................................................... 8
EXPLODED VIEW .......................................................................................................... 16
PACKING ........................................................................................................................ 18
ADJUSTMENT ............................................................................................................... 19
PC BOARD VIEWS
DISPLAY UNIT (X54-3270-10) : TK-760HG .............................................................. 28
DISPLAY UNIT (X54-3280-10) : TK-762HG .............................................................. 29
PLL/VCO (X58-4670-10) ........................................................................................... 30
TX-RX UNIT (X57-5950-XX) (A/2) ........................................................................... 31
TX-RX UNIT (X57-5950-XX) (B/2) ............................................................................ 37
SCHEMATIC DIAGRAM ................................................................................................ 41
BLOCK DIAGRAM .......................................................................................................... 49
LEVEL DIAGRAM ........................................................................................................... 52
TERMINAL FUNCTION ................................................................................................. 54
SPECIFICATIONS ........................................................................................................... 55


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3
TK-760HG/762HG
OPERATING FEATURES
Foot switch 1 push
(Hold it down for about one second.)
Emergency mode
Emergency channel
LCD dot status change
TX 25 sec.
RX 5 sec.
Emergency ACK code receive
Foot switch 1 push
Horn/Light operation stop
Horn/Light operation
[D/A] key 1 push
Emergency reset code receive
[MON] key + Foot SW 1 push
Emergency mode reset
Normal operation
After 1 min.
*2
*2
*1
LCD dot status change
*1
Dot
Dot
or
or
s Emergency mode system chart (TK-762HG)
*1 : When the dot indicator is on, it turns off.
When the dot indicator is off, it turns on.
*2 : Hold the foot switch again for about one second.
Radio Password (TK-760HG only)
When the password is set in the transceiver, user can not
use the transceiver unless enter the correct password.
This code can be up to 6 digits from 0 to 9 and input with
the key, and "SCN" key.
Emergency
Pressing this key for longer than 1 second causes the
transceiver to enter the emergency mode. The transceiver
jumps to the programmed "Emergency the group and chan-
nel" and transmits for 25 seconds.
The transceiver disables mic mute while transmitting.
After finishing transmission, the transceiver receivers for 5
seconds. The transceiver mutes the speaker while receiv-
ing. Following the above sequence, the transceiver contin-
ues to transmit and receive.
s Emergency mode system chart (TK-760HG)
Foot switch 1 push
(Hold it down for about one second.)
Emergency mode
Emergency channel
LCD dots light
TX 25 sec.
RX 5 sec.
Emergency ACK code receive
Foot switch 1 push
Horn/Light operation stop
Horn/Light operation
[D/A] key 1 push
Emergency reset code receive
[MON] key + Foot SW 1 push
Emergency mode reset
Normal operation
After 1 min.
*2
*2
*1
Dots
Dots
LCD dots light
*3
or
or
*1 : 3 left most dots light.
*2 : Hold the foot switch again for about one second.
*3 : 2 right most dots light.


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4
TK-760HG/762HG
REALIGNMENT
Clone Mode
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-760HG power ON with the [ ] key
held down. If the password is set to the TK-760HG, the
TK-760HG displays "CLN LOCK". If the password is not
set, the TK-760HG 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-760HG 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-760HG.
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
displayed, numbers (0 to 9) are displayed flashing. When
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 proce-
dure, "CLONE" is displayed if the entered password is
correct. If the password is incorrect, "CLN LOCK" is
redisplayed.
4. Power on the slave TK-760HG/762HG.
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.
Cloning cable
(E30-3382-05)
Fig. 1
MBL
PSB
GND
PTT/TXD
ME
MIC
HOOK/RXD
CM
GND
REMOTE/TXD
PTT/RXD
8
1
1
8
Clone cable
E30-3411-05 (TK-760HG
TK-260G/270G)


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5
TK-760HG/762HG
INSTALLATION
Fig. 3
PA/HA Unit (KAP-1 : Option)
s 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.
1
3
2
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.
s 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 (
).
2
1
3
Fig. 1
s 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
ignition key.
1. Remove the lower half of the transceiver case.
2. Set jumper resistors (0
) R134 and R135 of the TX-RX
unit (A/2) as shown in Table 1.
Fig. 2
Operation when KCT-18
R134
R135
is connected
Enable
Enable
KCT-18 cannot
Power on/off and Horn
Disable
Enable
be connected
Alert or AUX-A on/off
Horn Alert or AUX-A
Enable
Disable
on/off
Disable Disable
Power cannot
be turned on
Table 1
R134 and R135 setup chart
1
3
6
13
15
KCT-18
KCT-19
Contact
1
2
3
TX-RX UNIT
(A/2)
ANT
KCT-19
CN2
R134
R133
R135
2
3
4
1
3
W1
W2
CN1
CN2
KCT-19
Cushion
(G13-1710-04)
CN3
CN7
1
CN3