Kenwood TK-8102H Service Manual

UHF FM TRANSCEIVER
TK-8102H
SERVICE MANUAL
REVISED
This service manual applies to products with 50300001 or subsequent serial numbers. In terms of the products with the serial numbers earlier than 50300001, refer to the TK-8102H service manual as per part No. B51-8611-00 and B51-8628-00.
Chassis (A10-4048-21)
Cabinet (A01-2181-01)
Modular jack (E08-0877-05)
Front glass (B10-2753-03)
Key top (K29-9065-01)
© 2003-6 PRINTED IN JAPAN B51-8611-10 (N) 875
CONTENTS
GENERAL .................................................. 2
SYSTEM SET-UP ...................................... 3
OPERATING FEATURES .......................... 4
REALIGNMENT ......................................... 8
INSTALLATION ....................................... 11
DISASSEMBLY FOR REPAIR ................. 13
CIRCUIT DESCRIPTION .......................... 14
SEMICONDUCTOR DATA ...................... 18
COMPONENTS DESCRIPTION .............. 20
PARTS LIST ............................................. 21
EXPLODED VIEW.................................... 28
Service Manual List
Title Parts number Remarks Destination TX-RX unit number Display unit number
TK-8102H B51-8611-00 M X57-6390-20 X54-3340-20
TK-8102H B51-8628-00 SUPPLEMENT K,K2,K3,M,M2 X57-6390-XX X54-3340-20
TK-8102H B51-8611-10 REVISED K,K2,K3,M X57-6710-XX X54-3460-20
(This service manual)
PACKING ................................................. 29
ADJUSTMENT ........................................ 30
PC BOARD
DISPLAY UNIT (X54-3460-20) ............ 35
TX-RX UNIT (X57-6710-XX) ............... 37
SCHEMATIC DIAGRAM.......................... 43
BLOCK DIAGRAM ................................... 47
LEVEL DIAGRAM .................................... 49
TERMINAL FUNCTION ........................... 51
SPECIFICATION ................... BACK COVER
TK-8102H

GENERAL

INTRODUCTION

SCOPE OF THIS MANUAL
This manual is intended for use by experienced techni­cians familiar with similar types of commercial grade commu­nications equipment. It contains all required service informa­tion for the equipment and is current as of this publication date. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions, which are issued as required.

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment informa­tion, the full part identification number should be included. This applies to all parts : components, kits, and chassis. If the part number is not known, include the chassis or kit number of which it is a part and a sufficient description of the required component for proper identification.

PERSONNEL SAFETY

The following precautions are recommended for person­nel safety :
•DONOT transmit if someone is within two feet (0.6
meter) of the antenna.
•DONOT transmit until all RF connectors are secure and
any open connectors are properly terminated.
• SHUT OFF this equipment when near electrical blasting
caps or while in an explosive atmosphere.
• All equipment should be properly grounded before power-
up for safe operation.
• This equipment should be serviced by only qualified tech-
nicians.

PRE-INSTALLATION CONSIDERATIONS

1. UNPACKING
Unpack the radio from its shipping container and check for accessory items. If any item is missing, please contact KENWOOD immediately.
2. LICENSING REQUIREMENTS
Federal regulations require a station license for each radio installation (mobile or base) be obtained by the equipment owner. The licensee is responsible for ensuring transmitter power, frequency, and deviation are within the limits permit­ted by the station license.
Transmitter adjustments may be performed only by a li­censed technician holding an FCC first, second or general class commercial radiotelephone operator’s license. There is no license required to install or operate the radio.
3. PRE-INSTALLATION CHECKOUT 3-1. Introduction
Each radio is adjusted and tested before shipment. How­ever, it is recommended that receiver and transmitter opera­tion be checked for proper operation before installation.
3-2. Testing
The radio should be tested complete with all cabling and accessories as they will be connected in the final installation. Transmitter frequency, deviation, and power output should be checked, as should receiver sensitivity, squelch operation, and audio output. Signalling equipment operation should be verified.
4. PLANNING THE INSTALLATION 4-1. General
Inspect the vehicle and determine how and where the ra­dio antenna and accessories will be mounted.
Plan cable runs for protection against pinching or crushing wiring, and radio installation to prevent overheating.
4-2. Antenna
The favored location for an antenna is in the center of a large, flat conductive area, usually at the roof center. The trunk lid is preferred, bond the trunk lid and vehicle chassis using ground straps to ensure the lid is at chassis ground.
4-3. Radio
The universal mount bracket allows the radio to be mounted in a variety of ways. Be sure the mounting surface is adequate to support the radio’s weight. Allow sufficient space around the radio for air cooling. Position the radio close enough to the vehicle operator to permit easy access to the controls when driving.
4-4. DC Power and wiring
1. This radio may be installed in negative ground electrical
systems only. Reverse polarity will cause the cable fuse to
blow. Check the vehicle ground polarity before installation
to prevent wasted time and effort.
2. Connect the positive power lead directly to the vehicle
battery positive terminal. Connecting the Positive lead to
any other positive voltage source in the vehicle is not rec-
ommended.
3. Connect the ground lead directly to the battery negative
terminal.
4. The cable provided with the radio is sufficient to handle
the maximum radio current demand. If the cable must be
extended, be sure the additional wire is sufficient for the
current to be carried and length of the added lead.
2
GENERAL / SYSTEM SET-UP
TK-8102H
5. INSTALLATION PLANNING – CONTROL STATIONS 5-1. Antenna system
Control station. The antenna system selection depends on many factors and is beyond the scope of this manual. Your KENWOOD dealer can help you select an antenna system that will best serve your particular needs.
5-2. Radio location
Select a convenient location for your control station radio which is as close as practical to the antenna cable entry point. Secondly, use your system’s power supply (which supplies the voltage and current required for your system). Make sure sufficient air can flow around the radio and power supply to allow adequate cooling.

SERVICE

This radio is designed for easy servicing. Refer to the schematic diagrams, printed circuit board views, and align­ment procedures contained in this manual.

NOTE

If you do not intend to use the 3.5-mm jack for the external speaker, fit the supplied speaker-jack cap to stop dust and sand from getting in.
Antenna connector
Power input connector
Speaker jack cap

SYSTEM SET-UP

Merchandise received
License and frequency allocated by FCC
Choose the type of transceiver
Transceiver programming
KES-3
External speaker
(Option)
Modem GPS receiver or
Modem GPS controller
KCT-39
Connection cable
KCT-36
Extension cable
KGP-2A
KGP-2B
Frequency range (MHz) RF power
450~490 45W K,M
485~512 45W K2
400~430 45W K3
See page 8. A personal computer (IBM PC or compatible), programming interface (KPG-46), and programming software (KPG-70D) are required for programming.
(Option)
KCT-18
Ignition sense cable
Delivery
or
Mobile data
(Option)
KDS-100
terminal
(Option)(Option)
(Option)
Type
3
TK-8102H

OPERATING FEATURES

1. Controls and Functions

1-1. Front Panel
q
we tr
u
y
1-2. Microphone
o
(Power) switch
q
Press to switch the transceiver ON. Press and hold for approximately 1 seconds to switch the transceiver OFF.
w ▲ key
Press to increase the volume level.
e ▼ key
Press to decrease the volume level.
r ● key
PF (Programmable Function) key. The default setting of this key is None (no function). The programmable func­tions available for this key are listed below.
key
t
PF (Programmable Function) key. The default setting of this key is Monitor. Other programmable functions avail­able for this key are listed below.
y 1/ 2/ 3/ 4 keys
Press to select a channel from 1 to 4.
u Microphone jack
Insert the microphone plug into this jack (the microphone is an optional accessory).
i Speaker
Internal speaker.
o PTT switch
Press this switch, then speak into the microphone to call a station.
i
1-3. Auxiliary Programmable Functions
• Emergency • Scan On/OFF
• Key Lock • Talk Around
• Monitor • Temporary Delete
• None (no function) • AUX
• Horn Alert • Scan + Temporary Delete
1-4. Display
Indicator Description
Light while transmitting.
Lights when a signal is detected on
the currently selected channel.
Lights while the function programmed
onto its corresponding key is activated.
Lights while the function programmed
onto its corresponding key is activated.
Lights to display the currently selected
channel (1~ 4).
1-5. Rear panel
Antenna connector
Power input connector
External speaker jack
4
OPERATING FEATURES
TK-8102H

2. Operation Features

The TK-8102H is a UHF FM radio designed to operate in conventional format. The programmable features are sum­marized.

3. Transceiver Controls and Indicators

3-1. Front Panel Controls
All the keys on the front panel are momentary-type push buttons. The functions of these keys are explained below.
POWER key
Transceiver POWER key. When the power is switched off, all the parameters are stored in memory. When the power is switched on again, the transceiver returns to the previous conditions.
CHANNEL keys
MONITOR key (Programmable)
key (Programmable)
VOLUME UP/DOWN key
When the key is pressed, the volume level is increased/ decreased and repeats if held for 200ms or longer.
BUSY/TX LED
The BUSY indicator (Green LED) shows that the channel is in use. The TX indicator (Red LED) shows that you are trans­mitting.
3-2. Programmable Keys
The FPU (KPG-70D) enables programmable keys to select the following functions.
• Emergency
• Key Lock
• Monitor
• Scan ON/OFF
• Talk Around
• Temporary Delete
• None
• AUX
• Horn Alert
• Scan + Temporary Delete
Emergency
Pressing this key for longer than 1 second causes the transceiver to enter the emergency mode. The transceiver jumps to the programmed “Emergency channel” and trans­mits for 25* seconds.
The transceiver disables mic mute while transmitting. Af­ter finishing transmission, the transceiver receivers for 5* seconds. The transceiver Mute* the speaker while receiving. Following the above sequence, the transceiver continues to transmit and receive. * Default value.
Key lock
Pressing this key causes the transceiver to accept entry of only the [Vol Up/Down]*, [Key lock], Microphone [PTT], [Monitor], [Emergency], and [Power] keys. * Programmable
Monitor
Used to release signalling (press once) or squelch (press and hold for approximately two seconds) when operating as a conventional. It is also used to reset option signalling.
Scan ON/OFF
Press this key starts scanning. Pressing this key stops scanning.
Talk around
Press this key, the transceiver uses the receive frequency and the tone for transmission.
The operator can call the other party directly (without re­peater). Press this key again, the talk around function goes off.
Temporary delete
The “Add” channel contained in the scan sequence, and “Delete” channel is not contained. In the scan mode, this key switches the channel delete temporarily (Press and hold for approximately one second).
When the transceiver is turned off, the transceiver exits the scan or switches the scan function off.
None
Sounds error operation beep, and no action will occur. Use this function when the transceiver is required to be more simple operated.
AUX
Press to activate the auxiliary port. Press again to deacti­vate the auxiliary port. Auxiliary is used with optional boards, allowing you to activate and deactivate these optional func­tions. While activated, the AUX icon appears on the display.
Horn alert
Horn Alert is a useful feature that will notify you of a re­ceived call while you are away from your vehicle. The trans­ceiver is programmed to sound the vehicle horn or some other external alert device (such as the vehicle headlights) when a call is received that has correct signalling.
Scan + Temporarily delete
To temporarily remove a channel from the Scan list, press and hold this key for approximately one second during Scan, while Scan is paused on the undesired channel, to tempo­rarily remove that channel from the scanning sequence. Af­ter switching the Scan function OFF, or switching the trans­ceiver OFF and then ON again, the Scan settings return to normal
5
TK-8102H
OPERATING FEATURES
4. Scan Operating
SCAN start condition
Two or more channels must be added to all channels that can be scanned. The transceiver must be in normal receive mode (PTT off).
When you activate the key programmed to the scan ON/ OFF function, the scan starts. The indicator next to the pro­grammed key LED blinks.
Scan stop condition
The scan stops temporarily if the following conditions are satisfied.
1) A carrier is detected, then QT/DQT matches on channels
for which receive the QT/DQT is set by the programming
software.
2) A carrier is detected on the channels for which receiving
QT/DQT is not set by the programming software or when
the monitor (signalling cancel) function is activated.
Revert channel
The revert channel is used to transmit during scanning and set by the programming software (KPG-70D).
1) Selected channel
The transceiver reverts to the channel before scanning or
the channel that you changed during scan.
2) Selected with talkback
The transceiver reverts to the selected channel prior to
scan initiation.
However, if a call is received on a channel other then the
selected channel and PTT is pressed before scanning re-
sume, the transceiver “talks back” on the current receive
channel.
Scan end
When you press the key programmed to the scan function during scan mode, the scan ends.
The indicator next to the programmed key LED turns off.
Temporary delete
It is possible to delete channel temporary during scan. When scan stops on unnecessary channel for example by in­terference of the other party, activate the delete function (for example press and hold the key for approximately one sec­ond), then that channel is deleted temporarily and scan re­start immediately.
The temporary deleted channels return to pre-set delete/ add channels, when the transceiver is turned off or the scan function is switched off.

5. Details of Features

Time-out timer
The time-out timer can be programmed in 30 seconds in­crements from 30 seconds to five minutes and off. If the transmitter is transmitted continuously for longer than the programmed time, the transmitter is disabled and a warning tone sounds while the PTT button is held down. The warning tone stops when the PTT button is released.
PTT ID
PTT ID provides a DTMF ANI or MSK ID to be sent with every time PTT (connect ID at beginning of transmission, dis­connect ID at end of transmission, or both).
You can program PTT ID “on” or “off” for each group channel (DTMF). The contents of ID are programmed for each transceiver.
The transceiver is capable to have ID. The format is DTMF. The timing that the transceiver sends ID is program­mable.
BOT : Connect ID is sent on beginning of transmission.
EOT : Disconnect ID is sent on end of transmission.
Both : Connect ID is sent on beginning of transmission
and disconnect ID is sent on end of transmission.
There is also “PTT ID” setting for each channel.
Off hook decode
If the Off hook decode function has been enabled, remov­ing and replacing the microphone on the hook has no effect for decoding QT/DQT and option signalling.
TOT pre-alert
The transceiver has “TOT” pre-alert timer. This param­eter selects the time at which the transceiver generates “TOT” pre-alert tone before “TOT” is expired.
“TOT” will be expired when the selected time passes from a TOT pre-alert tone.
TOT re-key time
The transceiver has “TOT” re-key timer. This timer is the time you can not transmit after “TOT” exceeded. After “TOT” re-key time expired you can transmit again.
TOT reset time
The transceiver has “TOT” reset timer. This timer is the minimum wait time allowed during a transmission that will reset the “TOT” count.
“TOT” reset time causes the “TOT” to continue even af­ter PTT is released unless the “TOT” reset timer has expired.
Clear to transpond
The transceiver waits the transpond of DTMF if channel is busy until channel open. This feature prevents the interfer­ence to other party.

6. Option Signalling (DTMF)

Built-in DTMF decoder is available for option signalling.
It is possible to use individual call, group call, Stun.
If the option signalling matches, a predetermined action will occur.
If option signalling matches on a channel is set up with option signalling, the channel LED will flash and option signal­ling will be released. The transpond or alert tone will sound.
While option signalling matches (or if option signalling is deactivated when you are transmitting), you can mute or unmute QT/DQT/Carrier.
6
OPERATING FEATURES
TK-8102H
SP Unmute
You can select the type of SP Unmute system for each
channel. The selection is as follows.
Carrier, QT/DQT: Channel with this option will not check ID Code in order to open its speaker. Carrier+DTMF, QT/DQT+DTMF: Channel that is set with this option will have to check for ID Code in order to open its speaker. Default: Carrier, QT/DQT.
SP unmute
Carrier None None Carrier Sounds
Carrier+DTMF
QT/DQT Yes None Carrier Not Sounds
QT/DQT+DTMF
Channel setting
QT/DQT
DTMF condition
Yes Carrier Sounds
None Yes Carrier Not Sounds
Yes Carrier Not Sounds
Yes Yes Carrier Not Sounds
RX condition Speaker
Carrier+DTMF Sounds
Carrier+DTMF Sounds
Carrier+QT/DQT Sounds
Carrier+QT/DQT Sounds
Carrier+QT/DQT+DTMF
Carrier+DTMF Not Sounds
Carrier+QT/DQT Not Sounds
Carrier+QT/DQT+DTMF
Carrier+DTMF Not Sounds
Sounds
Sounds

7. Audible User Feedback Tones

The transceiver outputs various combinations of tones to
notify the user of the transceiver operating state.
Refer to the help file on the KPG-70D, regarding the func-
tions that are not listed below.
Stun on tone
When a stun code is received, transpond tone sounds.
Stun off tone
When a stun release code is received, transpond tone
sounds.
Group call tone
Sounds when a group call with the correct DTMF option signalling is received, repeats 7 times. You can select yes or no in the Alert tone level setting.
Individual call tone
Sounds when an individual call with the correct DTMF op­tion signalling is received. You can select yes or no in the Alert tone level setting.
Key input error tone
Sounds when a key is pressed but that key cannot be used. You can select yes or no for the optional feature's warning tone.
Transpond tone
Sounds when an individual call with the correct DTMF op­tion signalling is received. For group calls, only the group tone will sound, not the transpond tone.
Note :
When QT/DQT is not used, QT/DQT and QT/DQT+DTMF
can not be selected.
When DTMF is not used, Carrier+DTMF and QT/
DQT+DTMF can not be selected.
Auto Reset
If option signalling matches a group set up with option sig­nalling, option signalling is released. After matching option signalling, option signalling will temporarily reset automati­cally.
Stun
If the stun code matches, a predetermined action will oc­cur. Whether option signalling is activated or not, when stun matches on any channel, the transceiver will become TX in­hibited or TX/RX inhibited. While stun is active, if the stun code + “#” code is received, stun will deactivate.
When stun matches, transpond will function. Alert will not be output.
Pre alert tone
Sounds prior to the TOT TX inhibit activation. If TOT pre alert is set, the tone sounds at the amount of time pro­grammed, before the TOT expires (TOT time – TOT pre alert time = Pre alert tone sounding time). You can select yes or no for the optional feature’s warning tone.
Transmit protection
The final FET is protected against heat while transmitting by making the radio cuts down TX power when the tempera­ture of the final FET becomes higher than reference. After that, if the temperature continue to rise, transmission is stopped. The final FET is also protected against over voltage by having the radio to check that the voltage of power supply connected to the radio is not higher than about 17V when the radio is turned on, otherwise it can not transmit. In both cases when transmission is stopped, a beep will continue to sound until the PTT key is released.
7
TK-8102H

REALIGNMENT

1. Modes

User mode
PC mode
Clone mode
Mode Function
User mode For normal use.
PC mode Used for communication between the
Data programming Used to read and write frequency data
mode and other features to and from the radio.
PC test mode Used to check the radio using the PC.
PC tuning mode Used to tune the radio using the PC.
Clone mode Used to transfer programming data from
Data program­ming mode
PC test mode
radio and PC (IBM compatible).
This feature is included in the FPU.
one radio to another.
PC tuning mode

2. How to Enter Each Mode

Mode Operation
User mode Power ON
PC mode Received commands from PC
Clone mode [1]+Power ON (Two seconds)
3-2. Connection Procedure
1. Connect the TK-8102H to the personal computer with the interface cable.
2. When the Power is switched on, user mode can be en­tered 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. In the PC mode, 4CH LEDs, [MON] LED and [] LED are turned on.
Notes :
• The data stored in the personal computer must match model type when it is written into the EEPROM.
• Attach the interface cable, then change the TK-8102H to PC mode.
3-3. KPG-46 Description
(PC programming interface cable : Option)
The KPG-46 is required to interface the TK-8102H to 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-8102H to the computers RS-232C serial port.
IMC-PC
KPG-46

3. PC Mode

3-1. Preface
The TK-8102H transceiver is programmed using a per­sonal computer, a programming interface (KPG-46) and pro­gramming software (KPG-70D).
The programming software can be used with an IBM PC or compatible. Figure 1 shows the setup of an IBM PC for programming.
8
KPG-70D
TK-8102H
Fig. 1
3-4. Programming Software Description
The KPG-70D programming disk is supplied in 3-1/2" disk format. The software on this disk allows a user to program TK-8102H radio via a programming interface cable (KPG-46).
3-5. Programming With IBM PC
If data is transferred to the transceiver from an IBM PC with the KPG-70D, the destination data (basic radio informa­tion) for each set can be modified.
REALIGNMENT
TK-8102H

4. 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).
Note :
Clone mode should enabled.
1. Turn the master TK-8102H power ON with the [1] key held
down. The TK-8102H [] LED is turned on.
2. Power on the slave TK-8102H.
3. Connect the cloning cable (No. E30-3382-05) to the modu-
lar microphone jacks on the master and slave.
4. Press the [] key on the master TK-8102H transceiver.
The data of the master is sent to the slave. While the mas-
ter is sending data, [TX] LED blinked. While the slave is
receiving the data, 4 LEDs, [MON] LED, [] LED are
turned on and [BUSY] LED blinked. When cloning of data
is completed, the master [TX] LED turned off, and the
slave automatically operates in the User mode. The slave
can then be operated by the same program as the master.
5. The other slave can be continuously cloned. Carry out the
operation in step 2 to 4.
4-1. Adding the data password.
If the data password is set in the optional feature menu, you must enter the password (Master transceiver) to activate a clone mode.
you can use 1, 2, 3, and 4 to configure the password. The maximum length of the password is 10 digits.

5. Accessory Connection Cable (KCT-39)

The KCT-39 is an accessory connection cable for connect­ing external equipment. The connector has 15 pins and the necessary signal lines are selected for use.
5-1. Installing the KCT-39 in the Transceiver
1. Lift the DC cord bushing (1) from the chassis. Peel the
pad as shown in Figure 3 (
2. Stick the pad to the DC cord (3) and chassis (4), both
of which are supplied with the KCT-39.
2
1
2
Fig. 3
).
1. [1]+Power ON.
2. [1]~[4] LED, and MON LED are turned ON.
3. Enter the password using [1]~[4] keys.
4. Press [MON] key.
5. If the password matches, the transceiver enters a clone mode. Otherwise, transceiver beeps and returns to the password input mode.
Clone cable (E30-3382-05)
Fig. 2
3
4
Fig. 4
9
TK-8102H
REALIGNMENT
3. Insert the KCT-39 cable (5) into the chassis (6). The
7
wire harness band (
) must be inside the chassis and
face down.
4. Connect the KCT-39 to the TX-RX unit as shown in Figure
8
).
5 (
Avoid forming the wiring towards the shielding cover closure area.
CN2
Chassis
Cushion
Chassis
Face down
End view of this area
5
7
Wire harness band (Stopper)
KCT-39 sumi tube
PCB
6
CN3
B
8
A
Accessory Port Function
No. Color Internal Name
1471013
2581114
3691215
1 Red CN2-1 SB
2 Pink CN3-1 IGN
3 Black CN2-3 GND
4 Brown CN3-3 DETO
5 Orange CN3-2 DATAI
6 Yellow CN2-8 FNC4
7 Green CN2-7 FNC3
8 Blue CN2-9 FNC5
9 Purple CN2-12 FNC8
10 Gray CN2-10 FNC6
11 White CN2-11 FNC7
12 NC NC
13 NC NC
14
Sky blue
15
Turquoise
connector
CN2-6 FNC2
CN2-5 FNC1

6. Ignition Sense Cable (KCT-18)

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.
Fig. 5
5. Connect the KCT-39 to the external accessory by inserting the crimp terminal ( which are supplied with the KCT-39.
13 15
1
10
3
9
9
) into the square plug (10), both of
6-2. Connecting the KCT-18 to the Transceiver
1. Install the KCT-39 in the transceiver. (See the KCT-39 sec­tion)
1
2. Insert the KCT-18 lead terminal (
2
39 (
).
13
1
15
3
1
2
) into pin 2 of the KCT-
Fig. 7
10
Fig. 6
REALIGNMENT / INSTALLATION
TK-8102H
6-3. Modifying the Transceiver
Modify the transceiver as follows to turn the power on and
off with the ignition key.
1. Remove the jumper resistor (0) R71 of the TX-RX unit.
Setting With the KPG-70D
Select “External Devices” from the “Edit” menu and en-
able the “Ignition Sense”.
TX-RX UNIT Component side
CN2
R71

INSTALLATION

1. Optional Board

1-1. Voice Scrambler Board Connection
Modification
1. Remove the cabinet and shielding cover from the trans-
ceiver.
2. Delete R202 and R267 on the TX-RX unit.
TX-RX UNIT Component side
CN3
R267
R202
Fig. 8
Fig. 1
Connection
The functions of pins of CN2 and CN3 on the TX-RX unit
are shown in the TERMINAL FUNCTION section (page 51).
12 pins lead wire
with connector (A)
CN2
1
12
CN3
1
E37-1081-05
1
3
7 8
9 10 11 12
11 pins lead wire
with connector (B)
E37-1080-05
1
4
5
7
9
8 7 D C B A
12 5
6
A12
Voice scrambler board
A BA11 CA10 DA9 E 1 2 3 4 5B5 6B7 7A8 8A7 9A3 10B11 11B9 12B4 E18
9
11
11
11
10
Fig. 2
11
TK-8102H
INSTALLATION
Pins Connection
Voice scrambler
functions with connector (A) with connector (B)
A A-12
B A-11
C A-10
D A-9
5– B-5
6– B-7
7 A-8
8 A-7
9 A-3
10 B-11
11 B-9
12 B-4
Avoid forming the wiring towards shielding cover closure area.
TX-RX UNIT Component side
12 pins lead wire 11 pins lead wire
1-2. Example for Connection
Picture (Trunking Board)
Insulation sheet
Cushion C
Trunking board
Cushion D (G13-1972-04)
Cushion B
CN2
to CN2 and CN3
Front side
CN3
Voice scrambler
board
to CN2 and CN3
Cushion (G13-1963-04) Voice scrambler board Cushion (G13-1964-04)
Fig. 3
Setting With the KPG-70D
Select “External Devices” from the “Edit” menu and set
the “Scrambler”.
Note :
The voice scrambler board is connected subsequent to the de-emphasis circuit.
TX-RX unit
CN4
Front side
Fig. 4
Setting With the KPG-70D
Select “External Devices” from the “Edit” menu and set
the “SmarTrunk”.
12

DISASSEMBLY FOR REPAIR

TK-8102H
1. When you remove the panel, turn the transceiver up side down. Detach the panel by lifting the tabs as shown be­low.
Tabs
Fig. 1
2. To remove the cabinet, first turn the transceiver up side down. Detach the cabinet by prying the tabs as shown below.
4. Mount the display unit To mount the display unit on the panel, follow the correct procedures shown to ensure easy display unit assembly and good fitting onto the panel.
q Snap in bottom of display unit first. w Snap in top of displaly unit.
w
q
Fig. 4
5. When mounting the front panel, match the 4 tabs of the chassis with the panel, being sure they attach securely.
Tabs
Tabs
Fig. 2
3. To remove the display unit PCB, detach the PCB by lifting at the indents of the PCB as shown below.
Indents
Tabs
Tabs
Fig. 5
Fig. 3
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