KENWOOD TK-3168 Service Manual

Cover page of KENWOOD TK-3168 Service Manual

Service Manual for KENWOOD TK-3168, downloadable as a PDF file.

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UHF FM TRANSCEIVER
TK-3168
© 2004-1 PRINTED IN JAPAN
B51-8655-00 (S) 141
SERVICE MANUAL
GENERAL ............................................................. 2
SYSTEM SET-UP ................................................. 2
REALIGNMENT .................................................... 3
DISASSEMBLY FOR REPAIR .............................. 4
CIRCUIT DESCRIPTION ....................................... 6
INSTALLATION .................................................. 10
TERMINAL FUNCTION ...................................... 11
SEMICONDUCTOR DATA ................................. 12
COMPONENTS DESCRIPTION ......................... 13
PARTS LIST ........................................................ 14
EXPLODED VIEW ............................................... 21
PACKING ............................................................ 22
ADJUSTMENT ................................................... 23
PC BOARD
TX-RX UNIT (X57-6730-XX) ......................... 28
SCHEMATIC DIAGRAM ..................................... 32
BLOCK DIAGRAM .............................................. 36
LEVEL DIAGRAM ............................................... 38
KSC-30 ................................................................ 39
SPECIFICATIONS ............................ BACK COVER
CONTENTS
Knob (CH-SELECTOR)
(K29-9280-13)
Knob (VOLUME)
(K29-9278-13)
Cabinet assy
(A02-3835-43)
Knob (PTT)
(K29-9332-03)
Antenna
(KRA-27: Option)
Does not come with antenna.
Antenna is available as an option.
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UHF FM TRANSCEIVER
TK-3168
© 2004-1 PRINTED IN JAPAN
B51-8655-00 (S) 141
SERVICE MANUAL
GENERAL ............................................................. 2
SYSTEM SET-UP ................................................. 2
REALIGNMENT .................................................... 3
DISASSEMBLY FOR REPAIR .............................. 4
CIRCUIT DESCRIPTION ....................................... 6
INSTALLATION .................................................. 10
TERMINAL FUNCTION ...................................... 11
SEMICONDUCTOR DATA ................................. 12
COMPONENTS DESCRIPTION ......................... 13
PARTS LIST ........................................................ 14
EXPLODED VIEW ............................................... 21
PACKING ............................................................ 22
ADJUSTMENT ................................................... 23
PC BOARD
TX-RX UNIT (X57-6730-XX) ......................... 28
SCHEMATIC DIAGRAM ..................................... 32
BLOCK DIAGRAM .............................................. 36
LEVEL DIAGRAM ............................................... 38
KSC-30 ................................................................ 39
SPECIFICATIONS ............................ BACK COVER
CONTENTS
Knob (CH-SELECTOR)
(K29-9280-13)
Knob (VOLUME)
(K29-9278-13)
Cabinet assy
(A02-3835-43)
Knob (PTT)
(K29-9332-03)
Antenna
(KRA-27: Option)
Does not come with antenna.
Antenna is available as an option.
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TK-3168
2
Merchandise received
Choose the type of transceiver
Transceiver programming
A personal computer (IBM PC or compatible), programming
interface (KPG-22), and programming software (KPG-82D)
are required for programming.
(The frequency, TX power HI/LOW, and signalling data are programmed
for the transceiver.)
Delivery
Are you using the speaker microphone?
YES
NO
KMC-17 or KMC-21
Speaker microphone
(Option)
Are you using the optional antenna?
YES
NO
KRA-23 or KRA-27
Optional antenna
TX/RX 440~480
TX/RX 400~430
4.0W
4.0W
TK-3168 (A)
TK-3168 (A3)
Frequency range (MHz)
RF power
Type
GENERAL / SYSTEM SET-UP
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 the
publication date. Changes which may occur after publication
are covered by either Service Bulletins or Manual Revisions.
These 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, or 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.
PERSONAL SAFETY
The following precautions are recommended for personal
safety:
q
DO NOT transmit until all RF connectors are verified secure
and any open connectors are properly terminated.
q
SHUT OFF and DO NOT operate this equipment near
electrical blasting caps or in an explosive atmosphere.
q
This equipment should be serviced by a qualified technician only.
SERVICE
This radio is designed for easy servicing. Refer to the
schematic diagrams, printed circuit board views, and alignment
procedures contained within.
SYSTEM SET-UP
Unit
Model
TX-RX Unit
Frequency range
Remarks
& destination
TK-3168
A
X57-6730-31
440~480MHz
IF1 : 49.95MHz
LOC : 50.4MHz
TK-3168
A3
X57-6730-32
400~430MHz
IF1 : 49.95MHz
LOC : 50.4MHz
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TK-3168
3
REALIGNMENT
2. How to Enter Each Mode
Mode
Operation
User mode
Power ON
PC mode
Received commands from PC
1. Modes
Mode
Function
User mode
For normal use.
PC mode
Used for communication between the
radio and PC (IBM compatible).
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.
This feature is included in the KPG-
82D.
User mode
PC mode
PC test mode
Data programming
mode
PC tuning mode
REALIGNMENT
3.PC Mode
3-1. Preface
The TK-3168 transceiver is programmed using a personal
computer, a programming interface (KPG-22) and programming
software (KPG-82D).
The programming software can be used with an IBM PC
or compatible. Figure 1 shows the setup of an IBM PC for
programming.
3-2. Connection procedure
1. Connect the TK-3168 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 transmitting from the transceiver, the red
LED lights.
When data is received by the transceiver, the green LED
lights.
Notes:
·
The data stored in the personal computer must match the
model type when it is written into the EEPROM.
·
Change the TK-3168 to PC mode, then attach the interface
cable.
3-3. KPG-22 description
(PC programming interface cable: Option)
The KPG-22 is required to interface the TK-3168 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-22 connects the SP/MIC connector of the TK-3168
to the computer's RS-232C serial port.
3-4. Programming software description
KPG-82D is the programming software for TK-3168
supplied on a CD-ROM. This software runs under Windows
98, ME, Windows 2000 or XP on an IBM-PC or compatible
machine.
The data can be input to or read from TK-3168 and edited
on the screen. The programmed or edited data can be printed
out. It is also possible to tune the transceiver.
Fig. 1
Tuning cable
(E30-3216-05)
RF Power meter
or SSG
Gray
+
Gray/Black
­
1.5D-XV Lead wire
+
1.5D-XV Shield wire ­
}
}
SP
MIC
KPG-22
KPG-82D
IBM-PC
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TK-3168
4
DISASSEMBLY FOR REPAIR
1. Separating the case assembly from the chassis.
1. Remove the volume knob
z.
2. Remove the two screws
x.
3. Lift the chassis
c, and remove it from the case assembly.
Note: After separating the case assembly from the chassis,
remove the channel knob.
2. Separating the chassis from the TX/RX unit.
1. Remove the two screws
v fixing the TX/RX unit B/2.
2. Remove the twelve screws
b and two screws n fixing
the TX/RX unit A/2.
3. Remove the solder from the antenna terminal using a
soldering iron
m, then lift the unit off.
3. How to remove the battery terminal block.
1. Remove the two screws /, then pull out the back cover .
2. Remove the screw .
Note: The two screws
n of TX/RX unit A/2 are fixing the
battery terminal block
,.
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TK-3168
5
Assembling
· Installation of battery terminal block and
packing
Install them so that no distortion or deformation occurs.
· Installation of speakers and cushion, and wire
styling of speakers
Install the speakers so that they do not protrude from the
cushion. Perform the wire styling of speakers as shown in a
photograph.
· Attaching the cushion
Attach the cushion as shown in Fig. 1.
Note: Cushion must not cover the screws A,B and C.
DISASSEMBLY FOR REPAIR
Install the cushion
according to the
guide.
· Installation of chassis and cabinet assy
Wire Styling
B
A
C
Fig. 1
Take screw B and
MIC edge as reference
line when sticking.
G13-2018-04
Stick between screw
A and B.
G13-2017-04
G13-2020-04
Do not press this area, top
packing easily deform.
Second, press down the Chassis to the
cabinet assy as shown in the diagram.
Good Condition
NG Condition
After mount, packing
should be in this
condition.
Packing deform.
Packing protruded out.
Note:
· Take care that the packing does not protrude from the
chassis or case.
· Replace the protruded or deformed packing with a new one.
First, mount the set to the cabinet assy.

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