Kenwood TK-7302 User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2009-9 PRINTED IN JAPAN
B51-8886-00 (N)000
SERVICE MANUAL
VHF FM TRANSCEIVER
CONNECTION CABLE
TK-7302/7302(V)
TK-7302H/7302H(V)
KCT-60
GENERAL.....................................................2
SYSTEM SET-UP.........................................4
REALIGNMENT ...........................................4
INSTALLATION............................................6
DISASSEMBLY FOR REPAIR ......................8
CIRCUIT DESCRIPTION ............................10
SEMICONDUCTOR DATA.........................15
COMPONENTS DESCRIPTION.................16
PARTS LIST ...............................................17
EXPLODED VIEW ......................................26
PACKING....................................................27
ADJUSTMENT ..........................................28
TERMINAL FUNCTION .............................34
PC BOARD
DISPLAY UNIT (X54-3670-20)...............36
TX-RX UNIT (X57-7680-XX)..................38
SCHEMATIC DIAGRAM ............................42
BLOCK DIAGRAM .....................................48
LEVEL DIAGRAM ......................................50
OPTIONAL ACCESSORIES
KCT-60 (CONNECTION CABLE)............51
SPECIFICATIONS ...................BACK COVER
CONTENTS
Panel assy
(A62-1171-03)
Badge
(B43-1629-04)
Key top
(K29-9448-01)
Modular jack
(E58-0535-05)

TK-7302/7302(V)/7302H/7302H(V)
2
Document Copyrights
Copyright 2009 by Kenwood Corporation. All rights re-
served.
No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or other-
wise, for any purpose without the prior written permission
of Kenwood.
Disclaimer
While every precaution has been taken in the preparation
of this manual, Kenwood assumes no responsibility for er-
rors or omissions. Neither is any liability assumed for dam-
ages resulting from the use of the information contained
herein. Kenwood reserves the right to make changes to any
products herein at any time for improvement purposes.
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced techni-
cians familiar with similar types of commercial grade com-
munications equipment. It contains all required service
information for the equipment and is current as of this pub-
lication 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 informa-
tion, 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 person-
nel safety :
• DO NOT transmit if someone is within two feet (0.6 me-
ter) of the antenna.
• DO NOT 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 pow-
er-up for safe operation.
• This equipment should be serviced by only qualified
technicians.
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 equip-
ment owner. The licensee is responsible for ensuring trans-
mitter 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. How-
ever, it is recommended that receiver and transmitter opera-
tion 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 installa-
tion. Transmitter frequency, deviation, and power output
should be checked, as should receiver sensitivity, squelch
operation, and audio output. Signalling equipment operation
should be verified.
GENERAL

TK-7302/7302(V)/7302H/7302H(V)
3
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 crush-
ing 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 instal-
lation 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
recommended.
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.
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 sys-
tem 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 pow-
er supply to allow adequate cooling.
SERVICE
This radio is designed for easy servicing. Refer to the
schematic diagrams, printed circuit board views, and align-
ment procedures contained in this manual.
NOTE
If you do not intend to use the 3.5-mm jack for the ex-
ternal speaker, fit the supplied speaker-jack cap to stop dust
and sand from getting in.
Speaker
jack cap
Power input
connector
Antenna
connector
ACC.
GENERAL

TK-7302/7302(V)/7302H/7302H(V)
4
Merchandise received
License and frequency allocated by FCC
Choose the type of transceiver
Transceiver programming
KCT-60
Connection cable
KCT-36
Extension cable
KES-5
External speaker
KCT-18
Ignition sense cable
KES-3
External speaker
See page 4.
A personal computer, programming interface (KPG-46/46A), and
programming software (KPG-124D) are required for programming.
Frequency range (MHz) RF power Type
136~174
136~174
50W
25W TK-7302/7302(V) M/K
TK-7302H K,M
TK-7302H(V) K
136~174 50W
(Option)
(Option)
(Option) (Option)
(Option)
Delivery
See page 7. See page 7. See page 7.
See page 6.
SYSTEM SET-UP
1. Modes
User mode
PC mode PC programming mode
PC test mode PC tuning mode
Clone mode
Mode Function
User mode For normal use.
PC mode Used for communication between the trans-
ceiver and PC.
PC programming
mode
Used to read and write frequency data and
other features to and from the transceiver.
PC test mode Used to check the transceiver using the PC.
This feature is included in the FPU.
PC tuning mode Used to tune the transceiver using the PC.
Clone mode Used to transfer programming data from one
transceiver to another.
REALIGNMENT
2. How to Enter Each Mode
Mode Operation
User mode Power ON
PC mode Received commands from PC
Clone mode [ ]+Power ON (Two seconds)
3. PC Mode
3-1. Preface
The transceiver is programmed using a personal com-
puter, a programming interface (KPG-46/46A), USB adapter
(KCT-53U) and FPU (programming software).
The programming software can be used with a PC. Fig-
ure 1 shows the setup of a PC for programming.
3-2. Connection procedure
1. Connect the transceiver to the computer using the inter-
face cable and USB adapter (When the interface cable is
KPG-46A, the KCT-53U can be used.).

TK-7302/7302(V)/7302H/7302H(V)
5
Note:
• You must install the KCT-53U driver in the computer to
use the USB adapter (KCT-53U).
• When using the USB adapter (KCT-53U) for the first time,
plug the KCT-53U into a USB port on the computer with
the computer power ON.
2. When the Power is switched on, user mode can be en-
tered immediately. When the PC sends a command, the
transceiver enters PC mode, and “Pc” is displayed on
the LCD.
When data is transmitting from the transceiver, the red
LED blinks.
When data is receiving by the transceiver, the green LED
blinks.
Note:
The data stored in the computer must match the “Model
Name” when it is written into the EEPROM.
3-3. KPG-46/KPG-46A description
(PC programming interface cable: Option)
The KPG-46/46A is required to interface the transceiver
to the computer. It has a circuit in its D-sub connector (KPG-
46: 25-pin, KPG-46A: 9-pin) case that converts the RS-232C
logic level to the TTL level.
The KPG-46/46A connects the 8-pin microphone connec-
tor of the transceiver to the RS-232C serial port of the com-
puter.
3-4. KCT-53U description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-46A to
a USB port on a computer.
When using the KCT-53U, install the supplied CD-ROM
(with driver software) in the computer. The KCT-53U driver
runs under Windows 2000 or XP or Vista (32-bit).
3-5. FPU (Programming Software) description
The FPU is the programming software for the transceiver
supplied on a CD-ROM. This software runs under MS-Win-
dows 2000, XP or Vista (32-bit) on a PC.
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.
List of FPU for transceiver
Model Type FPU
TK-7302 M KPG-124D(M)
TK-7302(V) K KPG-124D(K)
TK-7302H M KPG-124D(M)
TK-7302H K KPG-124D(K)
TK-7302H(V) K KPG-124D(K)
FPU
PC
KPG-46 or KPG-46A or
KPG-46A + KCT-53U +
Tuning cable
(E30-3383-05)
KPG-46
Transceiver
PC
D-SUB
(25-pin)
Transceiver
PC
KPG-46A
D-SUB
(9-pin)
Transceiver
PC
KPG-46A
KCT-53U
USB
Fig. 1
4. Clone Mode
Programming data can be transferred from one trans-
ceiver to another by connecting them via their external uni-
versal connectors. The operation is as follows (the transmit
transceiver is the source and the receive transceiver is a
target).
Note :
Clone mode should be enabled.
1. Turn the source transceiver power ON with the [ ] key
held down (2 seconds), “CL” is displayed on the LCD.
2. Power on the target transceiver.
3. Connect the cloning cable (No. E30-3382-05) to the mod-
ular microphone jacks on the source and slave.
4. Press the [ ] key on the source transceiver.
The data of the source is sent to the slave. While the
source is sending data, red LED blinked. While the slave
is receiving the data, “Pc” is displayed and green LED
blinked. When cloning of data is completed, the source
displays “En”, and the source red LED turned off, and
the slave automatically operates in the User mode. The
slave can then be operated by the same program as the
source.
5. The other slave can be continuously cloned. Carry out
the operation in step 2 to 4.
REALIGNMENT

TK-7302/7302(V)/7302H/7302H(V)
6
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 acti-
vate a clone mode.
You can use 0~9 to configure the password. The maxi-
mum length of the password is 6 digits.
1. [ ]+Power ON.
2. “PS” is displayed on the LCD.
3. If the [ ] and [ ] keys is pressed while “PS” is displayed,
numbers (0 to 9) are displayed flashing. When you press
the [ ] key, the currently selected number is deter-
mined. If you press the [ ] key after entering the pass-
word in this procedure, “CL” is displayed if the entered
password is correct. If the password is incorrect, “PS” is
redisplayed.
Cloning cable
(E30-3382-05)
Fig. 2
4-2. Flow chart (Source transceiver)
Press [ ] key + Power ON for 2 seconds
Is
password*
set?
* Read
Authorization
password
Shows PS
Yes
[ ]
No
Input password if
password is correct
Clone mode
Start the clone funnction
INSTALLATION
REALIGNMENT
1. Connection Cable (KCT-60: Option)
The KCT-60 connection cable kit is used to connect the
transceiver to the KCT-18 (Ignition sense cable), KES-5 (Ex-
ternal speaker), or through the KCT-36 extension cable.
1-1. Installing the KCT-60 (Connection cable) in the
transceiver
1. Remove the ACC. cap on the rear of the transceiver.
2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
3. Connect the 15-pin connector of the KCT-60 to a KCT-18,
KES-5, or through a KCT-36 extension cable.
Note: You must setup using the KPG-124D(K) or KPG-
124D(M).
KCT-18, KES-5 or
through KCT-36
extension cable
KCT-60

TK-7302/7302(V)/7302H/7302H(V)
7
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.
2-1. Installing the KCT-18 (Ignition sense cable) in
the transceiver
1. Remove the ACC. cap on the rear of the transceiver.
2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
3. Insert the crimp terminal of the KCT-18 to pin 2 on the
15-pin connector of the KCT-60.
Note: You must setup using the KPG-124D(K) or KPG-
124D(M).
2
Crimp terminal
of the KCT-18
KCT-60
INSTALLATION
3. External Speaker (Option)
3-1. KES-3
The KES-3 is an external speaker for the 3.5-mm-diameter
speaker jack.
■Connection procedure
1. Remove the speaker-jack cap on the rear of the trans-
ceiver.
2. Connect the KES-3 to the 3.5-mm-diameter speaker jack
on the rear of the transceiver.
3-2. KES-5
External speaker KES-5 can be installed for KCT-60.
■Connection procedure
1. Remove the ACC. cap on the rear of the transceiver.
2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
3. Insert two crimp terminals of the KES-5 to pins 3 and 12
on the 15-pin connector of the KCT-60.
Note: You must setup using the KPG-124D(K) or KPG-
124D(M).
12
3
Black lead
KCT-60
Black/White lead

TK-7302/7302(V)/7302H/7302H(V)
8
1. Disassembly Procedure
1. When removing the cabinet, first remove the two screws
from the right and left with a phillips screwdriver.
Then, hook your finger on the edge of the cabinet and
pull it out until it is over the chassis protrusion. Remove
the cabinet by prying the cabinet as shown below.
Cabinet
2. To remove the panel assembly, first turn the transceiver
upside down.
Then, insert a flat-head screwdriver into the holes of the
chassis and tilt it in the direction as shown by the arrow.
Panel assembly
3. Disconnect the flat cable from connector of the panel as-
sembly.
Flat cable
4. To remove the speaker holder, first remove the two
screws from the display PCB using a phillips screwdriver.
Then, insert a flat-head screwdriver under the tabs of the
speaker holder and tilt it in the direction shown by the ar-
row.
Remove the speaker from the front panel by turning it in
the direction indicated, together with the speaker holder
and display PCB.
Speaker
holder
Display PCB
5. When removing the TX-RX PCB, first remove the top
packing.
Then, remove the solder of the antenna hot pin and posi-
tive terminal of the DC cord.
Remove the 15 screws from the TX-RX PCB, power
module, and audio amp.
Positive terminal
of the DC cord Antenna hot pin
Power module
TX-RX PCB
Audio amp
DISASSEMBLY FOR REPAIR

TK-7302/7302(V)/7302H/7302H(V)
9
6. Pull it out behind the chassis by rotating the bush (e)
of the DC cord 90 degrees in the direction of the arrow
after the screw (q) in the negative terminal is removed,
and the positive terminal (w) is removed from the chas-
sis.
DC cord :
@
.
2. Precautions for Reassembly
1. When mounting the speaker holder, while suppressing
the speaker rear part (shaded area), fix the four tabs of
the speaker holder into the hollows of the front panel in
order (q, w, e, and r). Then, tighten the two screws
of the display PCB.
Speaker holder
Speaker
rear part
Display PCB
.
;
@
:
2. When mounting the panel assembly, pass the flat cable
through the hole of the chassis as shown below after
connect the flat cable to connector of the panel assem-
bly.
Panel assembly
Panel
assembly
Chassis
Chassis
Hole of
the chassis
3. Fit the panel assembly into the two tabs of the chassis
top side first.
Then, fit the panel assembly into the two tabs of the
chassis bottom side by turning the panel assembly.
3. Correspondence when replacing the
LED (B30-2321-05)
When replacing the LED (B30-2321-05), cut the leg of
the LED to 4mm (0.16 inch) after installing the Collar (J31-
0565-15).
LED
Collar
4mm (0.16 inch)
DISASSEMBLY FOR REPAIR

TK-7302/7302(V)/7302H/7302H(V)
10
1. Frequency Configuration
The receiver utilizes double conversion. The first IF is
38.85MHz and the second IF is 450kHz. The first local oscil-
lator signal is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the neces-
sary frequencies. Figure 1 shows the frequencies.
ANT
SW
RF
AMP
1st
MIX
AF
PA
TCXO
MIC
AMP
X2
multiply
RF
AMP
POWER
AMP
CF 450kHz
MCF
38.85MHz
IF SYSTEM
PLL/VCO
19.2MHz
38.4MHz
ANT
RX
TX
SP
MIC
Fig. 1 Frequency configuration
2. Receiver System
The receiver is a double conversion superheterodyne.
The frequency configuration is shown in Figure 1.
2-1. Front-end RF Amplifier
An incoming signal from the antenna is applied to an RF
amplifier (Q506) after passing through the transmit/receive
switch circuit (D302, D303, D304 and D305) and bandpass
filter (L517, L518 and varactor diodes: D509, D510).
After the signal is amplified (Q506), the signal is filtered
by the bandpass (L512, L513 and varactor diodes: D506,
D508) to eliminate unwanted signals before it is passed to
the first mixer.
The voltage of these diodes are controlled by tracking
the MCU (IC702) center frequency of the bandpass filter.
(See Figure 2)
2-2. First Mixer
The signal from the RF amplifier is heterodyned with the
first local oscillator signal from the PLL frequency synthe-
sizer circuit at the first mixer (Q504) to create a 38.85MHz
first intermediate frequency (1st IF) signal. The first IF signal
is then fed through one pair of monolithic crystal filters (MCF:
XF500) to further remove spurious signals.
Item Rating
Nominal center frequency 38.85MHz
Pass bandwidth ±6.0kHz or more at 3dB
40dB stop bandwidth ±25.0kHz or less
Ripple 1.0dB or less
Insertion loss 4.0dB or less
Guaranteed attenuation 75dB (–900kHz); 50dB (+900kHz)
Spurious: 40dB or more within fo±1MHz
Terminal impedance 610Ω/ 3.0pF/ Coupling Cap 13.0pF
Table 1 Crystal filter (L71-0659-05): XF500
2-3. IF Amplifier Circuit
The first IF signal is amplified by Q502, and enters IC500
(FM processing IC). The signal is heterodyned again with
a second local oscillator signal within IC500 to create a
450kHz second IF signal. The second IF signal is then fed
through a 450kHz ceramic filter (Wide: CF500, Narrow:
CF501) to further eliminate unwanted signals before it is
amplified and demodulated by the quadrature detector with
the ceramic discriminator (CD500).
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±6.0kHz or more
50dB bandwidth ±12.5kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 35.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 2 Ceramic filter (L72-0993-05): CF500
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±4.5kHz or more
50dB bandwidth ±10.0kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 60.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 3 Ceramic filter (L72-0959-05): CF501
CIRCUIT DESCRIPTION
Fig. 2 Receiver System
ANT
L517,L518
D509,D510
BPF
Q506
RF AMP
Q502
IF AMP
Q504
MIX
XF500
MCF
D302,D303
D304,D305
ANT
SW
IC501
DC OP AMP
Q500
Doubler
X1
TCXO
IC500
FM IC system IC701 Baseband C
1st local
OSC (VCO/PLL)
CF500 (Wide)
CF501 (Narrow)
TV
CD500
TVC &
APCC
D511, L519
North filter
L513,L512,L511
D508,D506
D505
BPF

TK-7302/7302(V)/7302H/7302H(V)
11
2-4. Wide/Narrow Switching Circuit
The Wide port (pin 99) and Narrow port (pin 98) of the
MCU is used to switch between ceramic filters. When the
Wide port is high, the ceramic filter switch diodes (D500,
D501) cause CF500 to turn on to receive a Wide signal.
When the Narrow port is high, the ceramic filter switch
diodes (D500, D501) cause CF501 to turn on to receive a
Narrow signal.
Narrow
IC702
pin98
IF_IN MIX_O
IC500
FM IC System
CF501
(Narrow)
CF500
(Wide)
R505 R507
R506
R504
D500 D501
Wide
IC702
pin99
Fig. 3 Wide/Narrow switching circuit
2-5. AF Signal System
The detection signal from the FM IC (IC500) goes to the
baseband IC (IC701) DISC input (pin 16) for characterizing
the signal.
The AF signal output from IC701 is input to the audio
power amplifier (IC705). The AF signal from IC705 switches
between the internal speaker and the speaker jack (J701)
output.
Baseband
IC
IC701
AF PA
IC700 SP
FM IC
IC500
Fig. 4 AF signal system
2-6. Squelch Circuit
The detection output from the FM IC (IC500), a voltage
is applied to the MCU (IC702). The MCU controls squelch
according to the voltage (SQIN) level.
The signal from the RSSI pin of IC500 is monitored.
The electric field strength of the receive signal can be
known before the SQIN voltage is input to the MCU, and
the scan stop speed is improved.
N-REC
RSSI
IC702
MCU
IC500
FM IC
SQIN
RSSI
Fig. 5 Squelch circuit
3. Transmitter System
3-1. Outline
The transmitter circuit produces and amplifies the de-
sired frequency directly. It FM-modulates the carrier signal
by means of a varicap diode.
3-2. Power Amplifier Circuit
The transmit output signal from the VCO passes through
the transmission/reception selection diode (D719) and am-
plified by Q300. The amplified signal goes to the RF power
module (IC301) through a low-pass filter. The lowpass filter
removes unwanted high-frequency harmonic components,
and the resulting signal goes through the antenna terminal.
3-3. APC Circuit
The automatic transmission power control (APC) circuit
detects part of a final amplifier output with a coupler circuit
and applies a voltage to IC300. IC300 compares the APC
control voltage (PC) generated by the baseband IC (IC701)
and DC amplifier (IC501) with the detection output voltage.
IC300 generates the voltage to control IC301 and stabilizes
transmission output.
The APC circuit is configured to protect over current of
Q300 and IC301 due to fluctuations of the load at the anten-
na end and to stabilize transmission output at voltage and
temperature variations.
DRIVE
AMP
RF POWER
module
Q300 IC301
DC
AMP
IC501
ANT
SW
D302~D305
LPF
ANT
IC300
APC
control
Coupler
circuit
D719
APCC
IC701
pin32
Fig. 7 APC circuit
Fig. 6 Transmitter system
ANT
IC700MIC
MIC
AMP
D711,Q705
SW
MCU
Q6
TX
VCO
Q9
BUFF
AMP
Q10
RF
AMP
DRIVE
AMP
Q300 IC301
RF POWER
module
PLL IC
TCXO
19.2MHz
MIC key
input
IC701
Baseband
IC
IC702 X1 IC1
RF
AMP
Q3
CIRCUIT DESCRIPTION

TK-7302/7302(V)/7302H/7302H(V)
12
4. PLL Frequency Synthesizer
The PLL circuit generates the first local oscillator signal
for reception and the RF signal for transmission.
4-1. PLL Circuit
The frequency step of the PLL circuit is 10 or 12.5kHz.
A 19.2MHz reference oscillator signal is divided at IC1 by
a fixed counter to produce the 10 or 12.5kHz reference fre-
quency. The voltage controlled oscillator (VCO) output signal
is buffer amplified by Q9, then multiplied by using a doubler
and divided by a programmable counter in IC1.
The divided signal is compared in phase with the 10 or
12.5kHz reference signal in the phase comparator in IC1.
The output signal from the phase comparator is filtered
through a low-pass filter and passed to the VCO to control
the oscillator frequency.
4-2. VCO Circuit
The operating frequency is generated by Q6 in transmit
mode and Q4 in receive mode. The oscillator frequency is
controlled by applying the VCO control voltage, obtained
from the phase comparator to the varactor diodes (D4 and
D14 in transmit mode and D5 and D13 in receive mode) and
assist voltage to the (D6, D8 and D9 in transmit mode and
D7, D10 and D11 in receive mode).
The TX/RX pin is set high in receive mode causing Q5 to
turn off, and turn Q7 on. The TX/RX pin is set low in trans-
mit mode. The outputs from Q4 and Q6 are amplified by Q9
and sent to the RF amplifiers.
D14,D4
D6,D8,D9
D7,D10,D11
ASTC
IC2 Assist
voltage
Q6
TX VCO
Q9
BUFF
AMP
D13,D5 Q4
RX VCO
Q5,Q7
T/R SW
Charge
pump
OP
AMP
LPF
Phase
comparator
1/M
1/N
REF
OSC
19.2MHz
PLL
DATA
IC1: PLL IC Q3
Doubler
AMP
4-3. Unlock Circuit
During reception, the 9RC signal goes high, the 9TC sig-
nal goes low, and Q711 turns on. Q713 turns on and a volt-
age is applied to the collector (9R). During transmission, the
9RC signal goes low, the 9TC signal goes high and Q712
turns on. Q714 turns on and a voltage is applied to 9T.
The MCU in the control unit monitors the PLL (IC1) LD
signal directly. When the PLL is unlocked during transmis-
sion, the PLL LD signal goes low. The MCU detects this
signal and makes the 9TC signal low. When the 9TC signal
goes low, no voltage is applied to 9T, and no signal is trans-
mitted.
IC702
MCU
Q711
SW
Q713
SW
IC1
PLL
Q712
SW
Q714
SW
LD
9RC
9C
9R 9T
9TC
PLL lock
: LD “H”
Fig. 9 Unlock circuit
Fig. 8 PLL circuit
5. Control Circuit
The MCU carries out the following tasks:
1) Controls the WIDE, NARROW, TX/RX outputs.
2) Controls the Baseband IC (IC701).
3) Controls the PLL (IC1).
4) Controls the display unit.
IC1
LED driver
BLED
C.DATA
R.DATA
SLK
IRQ
CSN
Display unit
IC702
MCU
IC701
Baseband IC
GLED
RLED
MBL
LECI LECE LECL LELH
IC1
PLL
PLLE PLDT PLCK UL
Fig. 10 Control circuit
CIRCUIT DESCRIPTION

TK-7302/7302(V)/7302H/7302H(V)
13
5-1. Memory Circuit
The transceiver has a 256k-bit EEPROM (IC703). The EE-
PROM contains adjustment data. The MCU (IC702) controls
the EEPROM through three serial data lines.
EEPCK
IC702
MCU
IC703
EEPROM
EEPDI
EEPWP
Fig. 11 Memory circuit
5-2. Display Circuit
The MCU (IC702) controls the 7-segment LED Display
and LEDs.
When power is on, the MCU will use the MBL line to
control the key backlight LEDs.
When the transceiver is busy, the GLED line goes high,
Q1 turns on and the green LED (D23) lights after Q4 turns
on. In transmit mode, the RLED line goes high, Q2 and Q8
turn on and the red LED (D23) lights.
BLED will be set high when the function select (FPU set-
ting) is on, Q6 turns on and the blue LED (D22) lights.
The dimmer function is controlled by the switch (Q5).
The LED driver (IC1) controls the functions of the 7-segment
LED through the LEDI, LECE, LECL, LELH lines from the
MCU.
Q3
SW
Q4
SW
Q5
SW
D1~D5
Key backlight
Display
7-segment
IC702
MCU
IC1
LED
driver
LEDI
LEDM
LECE
LECL
LELH
MBL
Q1
SW
Q7
SW
D23
GLED
Q2
SW
Q8
SW
RLED
Q6
SW
D22
BLED
Fig. 12 Display circuit
5-3. Key Matrix Circuit
The TK-7302 front panel has function keys. Each of them
is connected to a cross point of a matrix of the KMI1 to
KMO3 ports of the MCU. The KMO1 to KMO3 ports are al-
ways high, while the KMI1 to KMI3 ports are always low.
The MCU monitors the status of the KMI1 to KMO3
ports. If the state of one of the ports changes, the MCU as-
sumes that the key at the matrix point corresponding to that
port has been pressed.
IC702
MCU
KMO1
KMO2
KMO3
KMI3
KMI2
KMI1
B
CH UP
VOL DN
A
r
VOL UP
S
C
CH DN
Fig. 13 Key matrix circuit
6. Signaling Circuit
6-1. Encode
■Low-speed data (QT, DQT)
Low-speed data is output from pin 1 (LSDO) of the MCU
(IC702). The signal passes through a low-pass CR filter. The
signal is mixed with the audio signal and goes to the VCO
and TCXO (X1) modulation input after signal processing in
the baseband IC (IC701).
■High-speed data (2-tone)
High-speed data (HSD) is output from pin 2 (HSDO) of
the MCU.
The signal passes through a low-pass CR filter. TX devia-
tion making an adjustment by MCU is applied to the base-
band IC (IC701). The signal is mixed with the audio signal
and goes to the VCO and TCXO.
The RX tone is audio output of baseband IC (IC701) at
the same time to audio power amplifier and then to the
speaker.
X1
TCXO
VCO
IC701
Baseband IC
DTMF/
MSK
IC1
PLL
TCXO
MOD
VCO
MOD
QT/DQT
LSDO
2-TONE
HSDO
IC702
MCU
Fig. 14 Encode
■MSK / DTMF
MSK and DTMF signal is self generated by the baseband
IC (IC701).
The TX deviation adjustment is done by the output gain
of the baseband IC (IC701), and is routed to the VCO. When
encoding MSK/DTMF, the microphone-input signal is muted.
6-2. Decode
■Low-speed data (QT, DQT)
The demodulated signal from the FM IC (IC500) will input
to the baseband IC (IC701) to remove frequencies of 300Hz
or more.
The signal is input to pin 88 (LSDI) of the MCU. The
MCU digitizes this signal, performs processing such as DC
restoration, and decodes the signal.
CIRCUIT DESCRIPTION

TK-7302/7302(V)/7302H/7302H(V)
14
■High-speed data (2-tone)
The demodulated signal from the FM IC (IC500) is am-
plified by the baseband IC and passes through a high-pass
filter to remove frequencies of 3kHz or more. The MCU digi-
tizes this signal and decodes the signal after receiving the
signal at pin 87 (HSDI).
■MSK/ DTMF
The demodulated signal from the FM IC (IC500) will
input to the baseband IC(IC701), then the baseband IC will
decode and send the decoded information to the MCU by
the data line.
The MCU then processes the decoded information.
IC701
Baseband IC
DTMF/MSK
decode IC702
MCU
QT/DQT
LSDI
DTMF/MSK
decode data
REPLAY data
2-TONE
HSDO
IC500
FM IC
Fig. 15 Decode
7. Power Supply Circuit
When the power switch on the display unit is pressed,
the power port on the display unit which is connected to
port 17 (POWER), goes low, then port 52 (SBC) goes high,
Q719 turns on, SB switch (Q720) turns on and power (SB) is
supplied to the transceiver.
When the DC power is supplied to the transceiver, the
voltage regulator IC (IC707, IC706) and supply into the MCU
VDD and reset the voltage detect IC (IC709). IC709 will
generate signal (RESET) into the reset terminal on the MCU
(IC702) to carry out a power on reset. Also, MCU (IC702) is
checking on port 91 (BATT). If DC power is less than about
8.5V, the transceiver is unable to power on.
When the DC power voltage deceases from normal volt-
age, the INT voltage detector IC (IC708) will set to high on
MCU port 18 (INT). If B line becomes less than about 8.5V,
MCU will send the backup data to EEPROM (IC703) and go
into STOP mode.
This circuit has an overvoltage protection circuit. If a DC
voltage of 16V or higher is applied to the base of Q710, this
voltage turns Q710 on and sets port 18 (INT) to low. As a re-
sult port 78 (SBC) is low, and turns Q719 and Q720 (SB) off.
Fig. 16 Power supply circuit
Q707
SW
Q720
SW
Q719
SW
IC707
AVR
D715
B
IC709
AVR
IC706
AVR
SBC
IGN
R792
R793
R851R852
INT
5M
3.3M
BATT
IC702
MCU
POWER
SW
POWER
RESET
IC708
AVR
Q710
SW
SB
IGN
CIRCUIT DESCRIPTION

TK-7302/7302(V)/7302H/7302H(V)
15
MCU: TX-RX unit IC702
Pin No. Name I/O Function
1 LSDO O QT/DQT output
2 HSDO O Voice/Beep/5-tone output for modu-
lation
3 LEDO O LED data
4 LECE O LED enable
5 LECL O LED clock
6 E - GND (Only for bus control)
7 CNVSS I CNVss for emulator (Hi: boot mode)
8 LELH O LED latch
9 LERE O LED reset
10 RESET - Reset
11 XOUT - Crystal (19.2MHz)
12 VSS - GND
13 XIN - Crystal (19.2 MHz)
14 VCC1 - +5V
15 5CC O 5C control
16 MKEY I/O Mic key
17 POWKEY I Power key input
18 INT I uCom stop
19 ASTSW O Assist speed up switch
20 BEEP O Beep for side tone
21~26 FNC8~FNC3 I/O Function P8~P3
27 FNC2 I/O Function P2 / Open drain port
28 FNC1 I/O Function P1 / Open drain port
29 ETXD I/O TXD for emulator
30 ERXD I/O RXD for emulator
31 ECLK - SCLK for emulator
32 EBSY - BUSY for emulator
33 TXD I/O To FPU
34 RXD I/O From FPU
35 HOOK I Hook
36 PTT I PTT
37 BSFT O Beat shift
38 LPOSW O Low power switch for reserve
39 EPM - EPM for emulator
40 PLLE O PLL IC chip select
41 PLDT O PLL IC data
42 PLCK O PLL IC clock
43 PA O
Public address (SP2 H: mute / L: unmute)
44 ECE - CE for emulator
45 CDATA O Command data for BASEBAND IC
46 RDATA I Reply data for BASEBAND IC
47 SCLK O Serial clock for BASEBAND IC
48 CSN1 O Chip select for BASEBAND IC
49 SP MUTE O
Speaker mute (SP1 H: mute / L: unmute)
50 9RC O 9R control
Pin No. Name I/O Function
51 9TC O 9T control
52 SBC O SB control
53 3CC O 3C control
54 PLPS O Sleep mode function for PLL IC
55 KSSW O Kenwood sound switch
56 AMP SW O AF AMP (L: enable / H: disable)
57 EEPWP O EEPROM write protect
58 EEPDT I/O EEPROM data
59 EEPCK O EEPROM clock
60 VCC2 - +3.3V
61 SCRSW O Scrambler switch (Audio path)
62 VSS - GND
63 CSN2 O CSN for Vocoder IC
64 TXRX O TX/RX (H: RX / L: TX)
65 LEDM O LED dimmer
66 MBL O Pannel and mic key backlight
67 NC I
68 DST I Destination
69 REVP I Reverse power
70 FWDP I Forward power
71 IRQ2 I IRQ for Vocoder IC
72 IGN I Ignition
73 IRQ1 I Interrupt request for BASEBAND IC
74 RLED O Red LED for TX
75 GLED O Green LED for busy
76 BLED O Blue LED for reserve
77~79
KMO1~KMO3 O Key matrix output 1~3
80~82 KMI1~KMI3 I Key matrix input 1~3
83 UL I VCO unlock detect
84 AF MUTE O AF mute
85 MIC1MUTE O Internal mic mute
86 MIC2 MUTE O External mic mute
87 HSDI I High speed data input: 5-tone
88 LSDI I Low speed data input: QT/DQT/ (LTR)
89 TEMP2 I Temperature 2
90 TEMP1 I Temperature 1
91 BATT I Battery voltage
92 RSSI I RSSI input
93 SQIN I Squelch input
94 AVSS - GND
95 CV I VCO lock voltage
96 VREF - +5V
97 AVCC - +5V
98 NARROW O Wide/Narrow (Hi: Narrow)
99 WIDE O Wide/Narrow (Hi: Wide)
100 HORN O Horn alert
SEMICONDUCTOR DATA

TK-7302/7302(V)/7302H/7302H(V)
16
Display unit (X54-3670-20)
Ref. No. Part Name Description
IC1 IC LED driver
Q1,2 Transistor TX/BUSY indication LED switch
Q3,4 Transistor KEY backlight control switch
Q5,9 Transistor LED dimmer control switch
Q6 Transistor Indication LED switch
Q7,8 Transistor TX/BUSY indication LED switch
D1~5 LED KEY backlight
D20 Diode Voltage protection
D22 LED Indication
D23 LED TX/BUSY indication
D33 Zener diode Surge protection
D37 LED LED display
TX-RX unit (X57-7680-XX)
Ref. No. Part Name Description
IC1 IC PLL IC
IC2 IC Assist filter
IC300 IC DC AMP (APC)
IC301 IC Power module
IC500 IC FM IC
IC501 IC RF BPF tuning voltage DC AMP
IC700 IC MIC/MOD AMP
IC701 IC BASEBAND IC
IC702 IC MCU
IC703 IC EEPROM
IC704 IC Voltage regulator (9V)
IC705 IC AF AMP
IC706,710 IC Voltage regulator (3.3V)
IC707 IC Voltage regulator (5V)
IC708 IC Voltage detection (INT)
IC709 IC Voltage detection (MCU reset)
Q3 Transistor PLL Fin AMP
Q4 FET RX VCO
Q5 FET TX/RX VCO switch
Q6 FET TX VCO
Q7 Transistor TX/RX VCO switch
Q8 Transistor Ripple filter
Q9,10 Transistor VCO buffer AMP
Q11,12 FET Assist filter control switch
Q300 Transistor TX drive AMP
Q500 Transistor RX 2nd local doubler AMP
Q501 Transistor Discriminator control switch
Q502 Transistor IF AMP
Q504 FET RX 1st mixer
Q506 FET Front-end LNA
Q507 Transistor Discriminator control switch
Ref. No. Part Name Description
Q510 Transistor Squelch input control switch
Q511 Transistor Squelch input switch
Q701 FET MIC mute switch
Q702 Transistor MIC mute switch
Q703 Transistor DET AMP LPF (D-SUB)
Q705 FET Scrambler switch
Q707 Transistor Ignition sense control switch
Q710 Transistor Over voltage detect switch
Q711 Transistor 9R control switch
Q712 Transistor 9T control switch
Q713 Transistor 9R switch
Q714 Transistor 9T switch
Q715,723 FET SP mute switch
Q717 FET 5C control switch
Q718 FET 3.3C control switch
Q719 Transistor SB control switch
Q720 FET SB switch
Q721 Transistor AF AMP switch
Q722 Transistor Over voltage detect switch
Q724 FET Horn alert switch
Q725 Transistor Horn alert control switch
Q728 Transistor RS-232C RXD control
Q729 Transistor PLL IC clock AMP
Q730 Transistor BASEBAND IC clock AMP
Q731,732 Transistor MCU clock AMP
D1 Diode PLL unlock detection
D4,5,13,14 Variable capaci-
tance diode Frequency control (TX/RX VCO)
D6~11 Variable capaci-
tance diode Frequency control (TX/RX VCO)
D12 Variable capaci-
tance diode Modulation control (TX VCO)
D15~17 Diode TX/RX Fin filter switch
D300 Zener diode Voltage protection
D301 Diode TX power control
D302~305 Diode ANT switch
D310,311 Zener diode Voltage protection
D312 Diode Reverse power rectifier
D313,314 Diode Power rectifier
D500,501 Diode W/N CF switch
D506,
D508~510
Variable capaci-
tance diode RF BPF tuning
D700~710 Diode Surge protection
D711,712 Diode MIC AMP AGC detection
D715 Zener diode Voltage protection
D717 Surge absorber Voltage protection
D718 Diode Voltage protection
D719,720 Diode TX/RX band switch
CONPONENTS DESCRIPTION

TK-7302/7302(V)/7302H/7302H(V)
17
PARTS LIST
Chip capacitor
Code L W T
Empty 5.6±0.5 5.0±0.5 Less than 2.0
A 4.5±0.5 3.2±0.4 Less than 2.0
B 4.5±0.5 2.0±0.3 Less than 2.0
C 4.5±0.5 1.25±0.2 Less than 1.25
D 3.2±0.4 2.5±0.3 Less than 1.5
E 3.2±0.2 1.6±0.2 Less than 1.25
F 2.0±0.3 1.25±0.2 Less than 1.25
G 1.6±0.2 0.8±0.2 Less than 1.0
H 1.0±0.05 0.5±0.05 0.5±0.05
Chip resistor
Code L W T
E 3.2±0.2 1.6±0.2 1.0
F 2.0±0.3 1.25±0.2 1.0
G 1.6±0.2 0.8±0.2 0.5±0.1
H 1.0±0.05 0.5±0.05 0.35±0.05
• Rating wattage
Code Wattage Code Wattage Code Wattage
1J 1/16W 2C 1/6W 3A 1W
2A 1/10W 2E 1/4W 3D 2W
2B 1/8W 2H 1/2W
(Less than 10pF)
Code B C D F G
(pF) ±0.1 ±0.25 ±0.5 ±1 ±2
CAPACITORS
C C 4 5 T H 1 H 2 2 0 J
1 2 3 4 5 6
1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating
2 = Shape ... round, square, etc. 5 = Value
3 = Temp. coefficient 6 = Tolerance
• Temperature coefficient
1st Word C L P R S T U
Color* Black Red Orange Yellow Green Blue Violet
ppm/°C 0 –80 –150 –220 –330 –470 –750
• Tolerance (More than 10pF)
Code C D G J K M X Z P No code
(%) ±0.25 ±0.5 ±2 ±5 ±10 ±20 +40 +80 +100 More than 10μF : –10~+50
–20 –20 –0 Less than 4.7μF : –10~+75
• Voltage rating
2nd word A B C D E F G H J K V
1st word
0 1.0 1.25 1.6 2.0 2.5 3.15 4.0 5.0 6.3 8.0 –
1 10 12.5 16 20 25 31.5 40 50 63 80 35
2 100 125 160 200 250 315 400 500 630 800 –
3 1000 1250 1600 2000 2500 2150 4000 5000 6300 8000 –
• Chip capacitors
(EX) C C 7 3 F S L 1 H 0 0 0 J Refer to the table above.
1 2 3 4 5 6 7 1 = Type
(Chip) (CH, RH, UJ, SL) 2 = Shape
3 = Dimension
(EX) C K 7 3 F F 1 H 0 0 0 Z 4 = Temp. coefficient
1 2 3 4 5 6 7 5 = Voltage rating
(Chip) (B, F) 6 = Value
7 = Tolerance
RESISTORS
• Chip resistor (Carbon)
(EX) R D 7 3 E B 2 B 0 0 0 J
1 2 3 4 5 6 7
(Chip) (B, F)
• Carbon resistor (Normal type)
(EX) R D 1 4 B B 2 C 0 0 0 J
1 2 3 4 5 6 7
1 = Type 5 = Rating wattage
2 = Shape 6 = Value
3 = Dimension 7 = Tolerance
4 = Temp. coefficient
CC45 Color*
2nd Word G H J K L
ppm/°C ±30 ±60 ±120 ±250 ±500
Example : CC45TH = –470±60ppm/°C
• Capacitor value
010 = 1pF 2 2 0 = 22pF
100 = 10pF
101 = 100pF Multiplier
102 = 1000pF = 0.001μF 2nd number
103 = 0.01μF 1st number
L
W
T
• Dimension

TK-7302/7302(V)/7302H/7302H(V)
18
✽New Parts. indicates safety critical components.
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L: Scandinavia K: USA P: Canada
Y: PX (Far East, Hawaii) T: England E: Europe
C: China X: Australia M: Other Areas
Ref. No. Address Parts No. Description Desti-
nation
New
parts
K : TK-7302(V)K HK : TK-7302HK HVK : TK-7302H(V)K
M : TK-7302M HM : TK-7302HM
Ref. No. Address Parts No. Description Desti-
nation
New
parts
PARTS LIST
TK-7302/7302(V)/7302H/7302H(V)
DISPLAY UNIT (X54-3670-20), TX-RX UNIT (X57-7680-XX)
1 1B
✽A02-4073-01 PLASTIC CABINET
2 3A
✽A62-1171-03 PANEL ASSY
4 2B
✽B09-0732-03 CAP (D-SUB)
5 3A
✽B10-2794-03 FRONT GLASS
6 3A
✽B43-1629-04 BADGE
7 2D
✽B62-2150-10 INSTRUCTION MANUAL M,HM
7 2D
✽B62-2167-10 INSTRUCTION MANUAL K,HK,HVK
9 2B E04-0167-15 RF COAXIAL RECEPTACLE (M)
10 1C E30-7523-55 DC CORD ASSY ACCESSORY
11 2B
✽E30-7684-05 DC CORD
12 2A
✽E37-1461-05 FLAT CABLE (30P PANEL)
14 1C F52-0023-05 FUSE (BLADE TYPE) 10A ACCESSORY M,K
14 1C F52-0024-05 FUSE (BLADE TYPE) 15A ACCESSORY
HM,HK,HVK
16 2B G53-1643-04 PACKING (DC CORD)
17 2B G53-1662-04 PACKING (RECEPTACLE)
18 1B
✽G53-1819-01 PACKING (CHASSIS)
19 3A
✽G53-1820-03 PACKING (PANEL)
21 1C,1D H12-3178-05 PACKING FIXTURE
22 2D
✽H52-2310-12 ITEM CARTON CASE
24 3D J19-1584-15 HOLDER (MIC HANGER) K,HK,HVK
25 3B
✽J19-5528-03 HOLDER (SPEAKER)
26 1C J29-0726-03 BRACKET ACCESSORY
28 3A
✽K29-9448-01 KEY TOP
A 1A,1B N35-2604-43 BINDING HEAD MACHINE SCREW
B
1A,2A,2B N67-3008-48 PAN HEAD SEMS SCREW
C 3A,3B N80-2008-48 PAN HEAD TAPTITE SCREW
D 2A,2B N87-2608-48 BRAZIER HEAD TAPTITE SCREW
30 3D N99-2039-05 SCREW SET ACCESSORY
32 3A
✽T07-0785-05 SPEAKER
33 2C
✽T91-0624-65 MICROPHONE (KMC-30) ACCESSORY HK
34 2C
✽T91-0639-55 MICROPHONE (KMC-35) ACCESSORY K,HVK
D1-5 B30-2282-05 LED (Y)
D22 3A
✽B30-2321-05 LED (BLUE LED)
D23 3A B30-2151-05 LED (RED/GREEN)
C1 CK73HB1E103K CHIP C 0.010UF K
C8 CC73HCH1H101J CHIP C 100PF J
C9 CK73HB1H102K CHIP C 1000PF K
C10 CK73HB1E103K CHIP C 0.010UF K
C16 CK73HB1E103K CHIP C 0.010UF K
C27 CC73HCH1H101J CHIP C 100PF J
C29-36 CK73HB1H102K CHIP C 1000PF K
C38,39 CC73HCH1H101J CHIP C 100PF J
C40 CK73HB1H102K CHIP C 1000PF K
C41,42 CC73HCH1H101J CHIP C 100PF J
C43-46 CK73HB1H471K CHIP C 470PF K
C47 CK73HB1H102K CHIP C 1000PF K
CN1 ✽E40-6851-05 FLAT CABLE CONNECTOR
CN2 E23-1262-05 TERMINAL
J1 3A
✽E58-0535-05 MODULAR JACK
101 3A
✽J31-0565-15 COLLAR
L1 L92-0138-05 CHIP FERRITE
CP1 RK74HB1J102J CHIP-COM 1.0K J 1/16W
R1 RK73HB1J101J CHIP R 100 J 1/16W
R2 RK73FB2B100J CHIP R 10 J 1/8W
R3-8 RK73HB1J102J CHIP R 1.0K J 1/16W
R10,11 RK73HB1J102J CHIP R 1.0K J 1/16W
R12 RK73HB1J122J CHIP R 1.2K J 1/16W
R21 RK73HB1J222J CHIP R 2.2K J 1/16W
R22 RK73HB1J820J CHIP R 82 J 1/16W
R23 RK73HB1J121J CHIP R 120 J 1/16W
R26,27 RK73HB1J000J CHIP R 0.0 J 1/16W
R28,29 RK73HB1J103J CHIP R 10K J 1/16W
R34 RK73HB1J102J CHIP R 1.0K J 1/16W
R35 RK73HB1J223J CHIP R 22K J 1/16W
R36 RK73HB1J822J CHIP R 8.2K J 1/16W
R37,38 RK73HB1J100J CHIP R 10 J 1/16W
R39 RK73HB1J150J CHIP R 15 J 1/16W
R40 RK73HB1J100J CHIP R 10 J 1/16W
R41 RK73HB1J222J CHIP R 2.2K J 1/16W
R42 RK73HB1J102J CHIP R 1.0K J 1/16W
D20 DA221 DIODE
D33 02DZ6.2F-Y ZENER DIODE
D37 3A
✽HDSP-521A LED
IC1
✽TCA62746AFNAG MOS-IC
Q1,2 RT1N441U TRANSISTOR
Q3 KRA225S DIGITAL TRANSISTOR
Q4 KRC102S-P DIGITAL TRANSISTOR
Q5,6 2SC3928A TRANSISTOR
Q7,8 RT1P141U TRANSISTOR
Q9 2SC3928A TRANSISTOR
C2 CC73HCH1H101J CHIP C 100PF J
C4 CC73HCH1H101J CHIP C 100PF J
C5 CK73HB1H471K CHIP C 470PF K
C7 CC73HCH1H101J CHIP C 100PF J
C8 CC73GCH1H101J CHIP C 100PF J
C10 CK73HB1A104K CHIP C 0.10UF K
C11 CC73HCH1H101J CHIP C 100PF J
C14 CC73HCH1H101J CHIP C 100PF J
C15 CC73HCH1H080B CHIP C 8.0PF B
C16 CK73HB0J105K CHIP C 1.0UF K
C17,18 CK73HB1A104K CHIP C 0.10UF K
C19,20 CK73HB1E103K CHIP C 0.010UF K
C22 CK73FB0J106K CHIP C 10UF K
C23 CK73HB1A104K CHIP C 0.10UF K
C24 CK73FB0J106K CHIP C 10UF K
TK-7302/7302(V)/7302H/7302H(V)
DISPLAY UNIT (X54-3670-20) TX-RX UNIT (X57-7680-XX) -11: K -12: HK -16: HVK -20: M -21: HM

TK-7302/7302(V)/7302H/7302H(V)
19
PARTS LIST
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
K : TK-7302(V)K HK : TK-7302HK HVK : TK-7302H(V)K
M : TK-7302M HM : TK-7302HM
TX-RX UNIT (X57-7680-XX)
C26 CK73HB1C103K CHIP C 0.010UF K
C27 CK73HB1A104K CHIP C 0.10UF K
C32 CK73HB1H471K CHIP C 470PF K
C34 CK73HB1H471K CHIP C 470PF K
C35 CC73HCH1H060B CHIP C 6.0PF B
C36 CC73GCH1H080B CHIP C 8.0PF B
C37 CK73HB1H471K CHIP C 470PF K
C40 CC73HCH1H390J CHIP C 39PF J
C41 CC73HCH1H330J CHIP C 33PF J
C43 CS77CA1V0R1M CHIP TNTL 0.1UF 35WV
C45 CS77BA1E010M CHIP TNTL 1.0UF 25WV
C46 CK73HB1H102K CHIP C 1000PF K
C48 C93-0787-05 CERAMIC 0.1UF 50WV
C49 C92-0863-05 CHIP TNTL 0.047UF 35WV
C54 CC73HCH1H470J CHIP C 47PF J
C56 CC73HCH1H101J CHIP C 100PF J
C57,58 CK73HB1H102K CHIP C 1000PF K
C59 CK73FB0J106K CHIP C 10UF K
C61 CC73HCH1H101J CHIP C 100PF J
C62 CC73HCH1H330J CHIP C 33PF J
C63 CC73HCH1H101J CHIP C 100PF J
C64 CC73HCH1HR75B CHIP C 0.75PF B
C65,66 CK73HB1H102K CHIP C 1000PF K
C67,68 CK73GB1H102K CHIP C 1000PF K
C69 CC73HCH1H040B CHIP C 4.0PF B
C70 CC73HCH1H050B CHIP C 5.0PF B
C71,72 CK73GB1H102K CHIP C 1000PF K
C73 CC73HCH1H060B CHIP C 6.0PF B
C74 CC73HCH1H080B CHIP C 8.0PF B
C75 CC73HCH1H030B CHIP C 3.0PF B
C76 CC73HCH1H060B CHIP C 6.0PF B
C77 CK73HB1H471K CHIP C 470PF K
C78,79 CC73HCH1H010B CHIP C 1.0PF B
C80 ✽CS77BB21C100M CHIP TNTL 10U 16WV
C81 CK73HB1H102K CHIP C 1000PF K
C82 CK73HB1H471K CHIP C 470PF K
C83 CK73HB1H102K CHIP C 1000PF K
C84 CC73HCH1H180J CHIP C 18PF J
C85 CC73HCH1H050B CHIP C 5.0PF B
C86 CC73GCH1H050B CHIP C 5.0PF B
C87-89 CK73HB1H102K CHIP C 1000PF K
C90 CC73GCH1H150J CHIP C 15PF J
C91 CK73HB1H102K CHIP C 1000PF K
C92 CK73HB1C103K CHIP C 0.010UF K
C94 CK73HB1H102K CHIP C 1000PF K
C95 CK73HB1A104K CHIP C 0.10UF K
C98 CK73GB1H102K CHIP C 1000PF K
C99 CK73HB1H471K CHIP C 470PF K
C102 CC73HCH1H270J CHIP C 27PF J
C103 CC73HCH1H390J CHIP C 39PF J
C104 CC73HCH1H060B CHIP C 6.0PF B
C105 CC73HCH1H040B CHIP C 4.0PF B
C106 CC73HCH1H470J CHIP C 47PF J
C300 CC73GCH1H101J CHIP C 100PF J
C301 CC73HCH1H080B CHIP C 8.0PF B
C302 CC73HCH1H070B CHIP C 7.0PF B
C303 CC73HCH1H090B CHIP C 9.0PF B
C305 CK73HB1H471K CHIP C 470PF K
C307 CK73HB1H102K CHIP C 1000PF K
C313 CK73HB1H102K CHIP C 1000PF K
C314 CC73HCH1H080B CHIP C 8.0PF B
C315 CK73HB1C223K CHIP C 0.022UF K
C316 CC73HCH1H060B CHIP C 6.0PF B
C317 CS77AA1A4R7M CHIP TNTL 4.7UF 10WV
C320 CK73GB1H102K CHIP C 1000PF K
C322 CK73GB1H271K CHIP C 270PF K
C333 CK73HB1H471K CHIP C 470PF K
C336 CK73GB1H221K CHIP C 220PF K
C338 CC73GCH1H220J CHIP C 22PF J
C339 CK73GB1H102K CHIP C 1000PF K
C340,341 CC73GCH1H101J CHIP C 100PF J
C342 CK73HB1A104K CHIP C 0.10UF K
C344 CK73GB1H102K CHIP C 1000PF K
C348 CC73GCH1H470J CHIP C 47PF J
C350 CC73GCH1H220J CHIP C 22PF J
C351 C93-0559-05 CHIP C 9.0PF D
C354 CK73HB1A104K CHIP C 0.10UF K
C355 CK73GB1H102K CHIP C 1000PF K
C360 CK73GB1H102K CHIP C 1000PF K
C361,362 CK73GB1H103K CHIP C 0.010UF K
C363 CC73GCH1H050B CHIP C 5.0PF B
C364 C93-0561-05 CHIP C 12PF J
C365,366 C93-0603-05 CHIP C 1000PF K
C367 CC73GCH1H020B CHIP C 2.0PF B
C368 CC73GCH1H430J CHIP C 43PF J
C372 C93-0562-05 CHIP C 15PF J
C373 C93-0552-05 CHIP C 2.0PF C
C374 CM73F2H200J CHIP C 20PF J
C376 CK73GB1H102K CHIP C 1000PF K
C381 C93-0554-05 CHIP C 4.0PF C
C383 C93-0562-05 CHIP C 15PF J
C384 CK73GB1H102K CHIP C 1000PF K
C391,392 CK73HB1H102K CHIP C 1000PF K
C500 CC73HCH1H470J CHIP C 47PF J
C501 CC73HCH1H180J CHIP C 18PF J
C504 CK73HB1C103K CHIP C 0.010UF K
C505 CC73HCH1H300J CHIP C 30PF J
C506 CC73HCH1H100B CHIP C 10PF B
C508 CC73HCH1H270J CHIP C 27PF J
C509 CK73HB1C103K CHIP C 0.010UF K
C510-515 CK73HB1A104K CHIP C 0.10UF K
C516 CK73HB1H102K CHIP C 1000PF K
C517 CK73HB1E103K CHIP C 0.010UF K
C518 CK73HB1H331K CHIP C 330PF K
C519 CK73FB0J106K CHIP C 10UF K
C520 CK73HB1H331K CHIP C 330PF K
C521,522 CK73HB1A104K CHIP C 0.10UF K
C523 CK73GB1C104K CHIP C 0.10UF K
C524 CK73HB1H102K CHIP C 1000PF K
C525 CK73GB0J475K CHIP C 4.7UF K
C526 CK73HB1H102K CHIP C 1000PF K
C527 CC73HCH1H680J CHIP C 68PF J
C528 CC73GCH1H330J CHIP C 33PF J
C529 CK73HB1E103K CHIP C 0.010UF K
C530 CK73HB1A104K CHIP C 0.10UF K
C531 CK73HB1H471K CHIP C 470PF K
C535 CK73HB1H102K CHIP C 1000PF K
C538 CK73HB1E103K CHIP C 0.010UF K
C541 CK73HB1E103K CHIP C 0.010UF K
C543 CC73HCH1H010B CHIP C 1.0PF B

TK-7302/7302(V)/7302H/7302H(V)
20
Ref. No. Address Parts No. Description Desti-
nation
New
parts
K : TK-7302(V)K HK : TK-7302HK HVK : TK-7302H(V)K
M : TK-7302M HM : TK-7302HM
PARTS LIST
Ref. No. Address Parts No. Description Desti-
nation
New
parts
TX-RX UNIT (X57-7680-XX)
C545 CC73HCH1H180J CHIP C 18PF J
C546 CC73HCH1H070B CHIP C 7.0PF B
C550 CK73HB1E103K CHIP C 0.010UF K
C551 CK73GB1A334K CHIP C 0.33UF K
C553 CK73HB1A104K CHIP C 0.10UF K
C554 CC73HCH1H080B CHIP C 8.0PF B
C555 CK73HB1H102K CHIP C 1000PF K
C556 CC73HCH1H150G CHIP C 15PF G
C557 CK73HB1E103K CHIP C 0.010UF K
C558 CK73HB1H102K CHIP C 1000PF K
C559 CK73GB1H471K CHIP C 470PF K
C560 CK73HB1H102K CHIP C 1000PF K
C561 CK73HB1H471K CHIP C 470PF K
C562 CK73HB1E103K CHIP C 0.010UF K
C563,564 CK73HB1H102K CHIP C 1000PF K
C565 CK73HB1H471K CHIP C 470PF K
C573 CC73HCH1H010B CHIP C 1.0PF B
C574 CC73HCH1H560J CHIP C 56PF J
C575 CC73HCH1H040B CHIP C 4.0PF B
C576 CK73HB1H102K CHIP C 1000PF K
C577 CC73HCH1H010B CHIP C 1.0PF B
C578 CC73HCH1H560J CHIP C 56PF J
C581 CC73HCH1H1R5B CHIP C 1.5PF B
C582 CK73HB1H102K CHIP C 1000PF K
C583 CK73HB1H471K CHIP C 470PF K
C585 CK73HB1A104K CHIP C 0.10UF K
C586 CK73HB1H102K CHIP C 1000PF K
C587 CK73GB1A105K CHIP C 1.0UF K
C588 CK73HB1H102K CHIP C 1000PF K
C589 CK73HB1H471K CHIP C 470PF K
C590 CK73HB1H102K CHIP C 1000PF K
C591 CK73HB1H471K CHIP C 470PF K
C592 CK73GB1A105K CHIP C 1.0UF K
C593 CC73HCH1H030B CHIP C 3.0PF B
C594 CC73HCH1H560J CHIP C 56PF J
C595 CC73HCH1H030B CHIP C 3.0PF B
C596 CK73HB1H102K CHIP C 1000PF K
C597 CC73HCH1H030B CHIP C 3.0PF B
C598 CC73HCH1H560J CHIP C 56PF J
C599 CC73HCH1H020B CHIP C 2.0PF B
C601 CC73HCH1H040B CHIP C 4.0PF B
C602 CC73HCH1H070B CHIP C 7.0PF B
C603 CC73HCH1H180J CHIP C 18PF J
C606 CK73HB1H471K CHIP C 470PF K
C700-709 CK73HB1H471K CHIP C 470PF K
C704 CK73HB1H102K CHIP C 1000PF K
C706 CK73HB1H102K CHIP C 1000PF K
C708 CK73HB1H102K CHIP C 1000PF K
C711 CK73HB1H471K CHIP C 470PF K
C713 CK73HB1H471K CHIP C 470PF K
C715 CK73HB1H471K CHIP C 470PF K
C717 CK73HB1H471K CHIP C 470PF K
C719 CK73HB1H471K CHIP C 470PF K
C721 CK73HB1H471K CHIP C 470PF K
C723 CK73HB1H471K CHIP C 470PF K
C725 CK73HB1H471K CHIP C 470PF K
C727 CK73HB1H471K CHIP C 470PF K
C729 CK73HB1H471K CHIP C 470PF K
C731,732 CK73HB1H471K CHIP C 470PF K
C735 CK73HB1A104K CHIP C 0.10UF K
C736 CK73GB0J475K CHIP C 4.7UF K
C739 CK73GB1C104K CHIP C 0.10UF K
C740 CK73HB1A104K CHIP C 0.10UF K
C743 CK73HB1C333K CHIP C 0.033UF K
C744 CK73HB1H471K CHIP C 470PF K
C745 CK73HB1A473J CHIP C 0.047UF J
C746 CK73FB0J106K CHIP C 10UF K
C747 CK73HB1A104K CHIP C 0.10UF K
C748 CC73HCH1H390J CHIP C 39PF J
C749,750 CK73HB1A104K CHIP C 0.10UF K
C753 CK73GB0J106K CHIP C 10UF K
C754,755 CK73HB1A104K CHIP C 0.10UF K
C756 CC73HCH1H391J CHIP C 390PF J
C758 CK73HB1H471K CHIP C 470PF K
C760 CK73HB0J105K CHIP C 1.0UF K
C762,763 CK73HB1A104K CHIP C 0.10UF K
C764 CK73HB1E103K CHIP C 0.010UF K
C765 CK73GB0J106K CHIP C 10UF K
C767 CK73GB1C104K CHIP C 0.10UF K
C768 CK73GB1H471K CHIP C 470PF K
C769 CK73HB0J105K CHIP C 1.0UF K
C770 CK73FB0J106K CHIP C 10UF K
C771 CC73HCH1H101J CHIP C 100PF J
C772 CK73HB0J105K CHIP C 1.0UF K
C773 CC73HCH1H101J CHIP C 100PF J
C774 CK73HB0J105K CHIP C 1.0UF K
C775 CC73HCH1H391J CHIP C 390PF J
C777 CK73HB0J105K CHIP C 1.0UF K
C778 CK73HB1E562K CHIP C 5600PF K
C779 CK73HB1E103K CHIP C 0.010UF K
C780 CK73HB1A683K CHIP C 0.068UF K
C784 CK73GB0J106K CHIP C 10UF K
C785 CK73HB1H332K CHIP C 3300PF K
C787 CK73HB1H332K CHIP C 3300PF K
C788 CK73HB1A683K CHIP C 0.068UF K
C790 CK73GB1H102K CHIP C 1000PF K
C792-794 CK73HB1H471K CHIP C 470PF K
C792,793 CK73HB1H102K CHIP C 1000PF K
C795 CK73GB1H102K CHIP C 1000PF K
C796 CK73HB0J105K CHIP C 1.0UF K
C797 CK73HB1H102K CHIP C 1000PF K
C807 CK73HB1H102K CHIP C 1000PF K
C808 CK73HB1A104K CHIP C 0.10UF K
C809 CK73GB1C104K CHIP C 0.10UF K
C810 CK73GB1H102K CHIP C 1000PF K
C813,814 CK73HB1H102K CHIP C 1000PF K
C816 CK73HB1A104K CHIP C 0.10UF K
C817 CK73HB1E103K CHIP C 0.010UF K
C819 CS77AB21C220M CHIP TNTL 22UF 16WV
C820 CK73HB1H102K CHIP C 1000PF K
C821 CK73GB1A105K CHIP C 1.0UF K
C822 CK73HB0J105K CHIP C 1.0UF K
C824 CS77AB21C220M CHIP TNTL 22UF 16WV
C825 CK73HB1A104K CHIP C 0.10UF K
C828,829 CK73HB1A104K CHIP C 0.10UF K
C831 CK73HB1A104K CHIP C 0.10UF K
C832 CK73GB1A224K CHIP C 0.22UF K
C833 CK73HB1H102K CHIP C 1000PF K
C835 CK73GB1H102K CHIP C 1000PF K
C837,838 CK73HB1H102K CHIP C 1000PF K