Kenwood TK-7360 User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
SERVICE MANUAL © 2011-1 PRINTED IN JAPAN
B51-8952-10 (N)PDF
TK-7360/7360H
TK-7360H(V)
VHF FM TRANSCEIVER
GENERAL.....................................................2
SYSTEM SET-UP.........................................4
REALIGNMENT ...........................................4
INSTALLATION............................................6
DISASSEMBLY FOR REPAIR ....................11
CIRCUIT DESCRIPTION ............................13
SEMICONDUCTOR DATA.........................18
COMPONENTS DESCRIPTION.................19
PARTS LIST ...............................................21
EXPLODED VIEW ......................................31
PACKING....................................................32
ADJUSTMENT ..........................................33
TERMINAL FUNCTION .............................42
PC BOARD
DISPLAY UNIT (X54-3740-20)...............44
TX-RX UNIT (X57-8020-XX)..................46
SCHEMATIC DIAGRAM ............................50
BLOCK DIAGRAM .....................................56
LEVEL DIAGRAM ......................................58
SPECIFICATIONS ......................................59
CONTENTS
Panel assy
(A62-1180-13)
Badge
(B43-1650-04)
Key top
(K29-9479-01)
Modular jack
(E58-0535-05)
This service manual added the details of the
panel tuning mode to B51-8952-00.
REVISED

TK-7360/7360H/7360H(V)
2
Document Copyrights
Copyright 2011 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 the pub-
lication 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 informa-
tion, 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 re-
quired component for proper identification.
PERSONAL SAFETY
The following precautions are recommended for personal
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-
erup 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-7360/7360H/7360H(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 speaker 3.5-mm jack and
the D-sub 15-pin connector, fit the supplied speaker-jack cap
and ACC cap to stop dust and sand from getting in.
ACC.
Speaker
jack cap
Power input
connector
Antenna
connector
ACC. cap
GENERAL

TK-7360/7360H/7360H(V)
4
Merchandise received
License and frequency allocated by FCC: K type only
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
VGS-1
Voice guide &
storage unit
See page 4.
A personal computer, programming interface (KPG-46/46A),
and FPU (programming software) are required for programming.
Frequency range (MHz) RF power Type
136~174
136~174
50W
50W TK-7360H K,M
136~174 25W TK-7360 M,M2
TK-7360H(V) K
(Option)
(Option)
(Option)
(Option)
(Option)
(Option)
Delivery
See page 9.
See page 9.
See page 7. See page 9.
See page 6.
SYSTEM SET-UP
1. Modes
User mode
PC mode PC programming mode
PC test mode PC tuning mode
Panel test mode Panel tuning mode
Clone mode
Firmware version information
Mode Function
User mode For normal use.
Panel test mode Use by the dealer to check the fundamental
characteristics.
Panel tuning mode Used by the dealer to tune the transceiver.
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.
Firmware version
information
Used to confirm the internal firmware ver-
sion.
REALIGNMENT
2. How to Enter Each Mode
Mode Operation
User mode Power ON
Panel test mode [ ]+Power ON
Panel tuning mode Panel test mode+[ ]
PC mode Received commands from PC
Clone mode [ ]+Power ON (One second)
Firmware version information [ ]+Power ON
3. Panel Test Mode
Setting method refer to ADJUSTMENT.
4. Panel Tuning Mode
Setting method refer to ADJUSTMENT.
5. PC Mode
5-1. 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.

TK-7360/7360H/7360H(V)
5
5-2. 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.).
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 “PROGRAM” is dis-
played 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.
5-3. 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.
5-4. 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, XP or Vista (32-bit).
5-5. FPU (Programming Software) description
The FPU is the programming software for the transceiver
supplied on a CD-ROM. This software runs under Windows
XP, Vista or 7 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-7360 M,M2 KPG-135D(M)
TK-7360H K KPG-135D(K)
TK-7360H M KPG-135D(M)
TK-7360H(V) K KPG-135D(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
6. Clone Mode
Programming data can be transferred from one trans-
ceiver to another by connecting them via their modular
microphone jacks. The operation is as follows (the transmit
transceiver is the source and the receive transceiver is a tar-
get).
Note :
Clone mode should be enabled.
1. Turn the source transceiver power ON with the [ ] key
held down (1 second), “CLONE MODE” 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 target.
4. Press the [ ] key on the source transceiver.
The data of the source is sent to the target. While the
source is sending data, red LED blinked. While the tar-
get is receiving the data, “PROGRAM” is displayed and
green LED blinked. When cloning of data is completed,
the source displays “END”, and the source red LED
turned off, and the target automatically operates in the
User mode. The target can then be operated by the
same program as the source.
5. The other target can be continuously cloned. Carry out
the operation in step 2 to 4.
REALIGNMENT

TK-7360/7360H/7360H(V)
6
6-1. Adding the data password
If the read authorization password is set in the optional
feature menu, you must enter the password (Source trans-
ceiver) to activate 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. “CLONE LOCK” is displayed on the LCD.
3. If the [ ] and [ ] keys is pressed while “CLONE LOCK”
is displayed, numbers (0 to 9) are displayed flashing.
When you press the [ ] key, the currently selected
number is determined. If you press the [ ] key after en-
tering the password in this procedure, “CLONE MODE”
is displayed if the entered password is correct. If the
password is incorrect, “CLONE LOCK” is redisplayed.
Cloning cable
(E30-3382-05)
Fig. 2
6-2. Flow chart (Source transceiver)
Press [ ] key + Power ON for 1 second
Is
password*
set?
* Read
Authorization
password
Shows CLONE LOCK
Yes
Yes
[ ]
No
No
Clone mode
Enter password
Start the clone funnction
Is entered
password
correct?
7. Firmware Version Information
Press and hold the [ ] key while turning the transceiver
power ON and then keep pressing and holding the [ ] key,
the firmware version information appears on the LCD.
INSTALLATION
REALIGNMENT
1. Connection Cable (KCT-60: Option)
The KCT-60 connection cable kit is used to connect the
transceiver to a Horn alert cable, KCT-18 (Ignition sense
cable), KES-5 (External speaker), or through the KCT-36 ex-
tension 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 Horn
alert cable, KCT-18, KES-5, or through a KCT-36 extension
cable.
Note: You must setup using the KPG-135D(K) or KPG-
135D(M).
Horn alert cable,
KCT-18, KES-5 or through
KCT-36 extension cable
KCT-60

TK-7360/7360H/7360H(V)
7
1-2. Terminal function
D-sub 15-pin Pin No. Function Molex 15-pin Pin No.
1SB1
2 IGN 2
3PA12
4DO4
5DI5
6 FNC1 9
7 FNC2 11
8 FNC3 7
9 FNC4 6
10 FNC5 8
11 FNC6 10
12 5C -
13 HR1 13
14 HR2 14
15 GND 3
2. Horn Alert Function
The Horn alert function (max. 2A drive) is enabled by in-
stalling the KCT-60 in the transceiver.
2-1. Installation Procedure
1. Remove the chip resistor R863 (4.7kΩ) on the TX-RX unit
before installing the KCT-60 in the transceiver.
Combination of Horn alert function and Ignition function
R863 KCT-18 Horn alert
function Ignition function
Present Absent Always inactive Inactive Default
Absent Present Active when
ignition is off Active
Absent Absent Always active
Transceiver cannot be
turned on if the igni-
tion function is set
Present Present Do not use this
configuration
Do not use this con-
figuration
TX-RX unit
Component side
R863
INSTALLATION
2. Remove the ACC. cap on the rear of the transceiver.
3. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
4. Insert the two crimp terminals of the Horn alert cable to
pins 13 and 14 of the square plug.
5. Connect the square plug to the 15-pin connector of the
KCT-60.
6. Connect the remaining two Horn alert cables to your car
Horn alert signal control.
The internal FET switch can be controlled by turning the
HA function on/off and by using a signaling decode out-
put. The maximum current of HA is 2A. This FET switch
is the open drain circuit. Therefore, a DC power supply is
necessary to use the HR1. The voltage range is from 5V
to 16V.
13. HR1
14. HR2
More
than 8Ω
1. SB
3. GND
13. HR1
14. HR2
More
than 8Ω
1. SB
3. GND
13. HR1
14. HR2
3. GND
(Default)
Note: You must set up using the KPG-135D(K) or KPG-
135D(M).
13
14
Horn alert cable
Square plug
Crimp terminal
13
14
15
10
11
12
7
8
9
4
5
6
1
2
3
KCT-60
3. 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 transceiver
power on and off with the car ignition key.
3-1. Installing the KCT-18 (Ignition sense cable) in
the transceiver
1. The KCT-18 can be installed in the transceiver by the fol-
lowing two methods (Method A, Method B).
Method A: The KCT-18 is soldered to the “IGN” pad on
the TX-RX unit.
Method B: The KCT-18 is connected to the 15-pin con-
nector of the KCT-60 connected to the trans-
ceiver.

TK-7360/7360H/7360H(V)
8
■Installation Procedure: Method A
1. Remove the two screws on both the right and left sides
of the transceiver, then remove the cabinet and top pack-
ing from the transceiver.
2. Remove the chip resistor R863 (4.7kΩ) on the TX-RX
unit.
TX-RX unit
Component side
R863
3. Cut the crimp terminal side of the KCT-18 using a pair of
nippers or similar tool.
Cut
4. Solder the cable side cut in the above step 3 to the “IGN”
pad on the TX-RX unit.
TX-RX unit
Component side
IGN
5. Dress the KCT-18 cable as shown in the figure. The KCT-
18 cable needs to pass through one of two indentations
located on the rear panel of the transceiver.
KCT-18
Indentation part
6. Cut off the projection of the top packing using a pair of
nippers or similar tool.
If the KCT-18 cable is dressed to be routed through the
indentations on the right side in step 5, the right side of
the projection needs to be cut off. If the KCT-18 cable is
dressed to be routed through the indentations on the left
side, the left side of the projection needs to be cut off.
Following is a figure presenting an example for when the
right side of the projection is cut off.
7. Reinstall the top packing. Check the correct fitting of the
top packing, then reinstall the cabinet and two screws
for the right and left sides.
8. Connect the other side of the KCT-18 to the ignition line
of the car.
■Installation Procedure: Method B
1. Remove the two screws on both the right and left sides
of the transceiver, then remove the cabinet and top pack-
ing from the transceiver.
2. Remove the chip resistor R863 (4.7kΩ) on the TX-RX
unit.
TX-RX unit
Component side
R863
3. Remove the ACC. cap on the rear of the transceiver.
4. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
5. Insert the crimp terminal side of the KCT-18 to pin 2 of
the square plug.
6. Connect the square plug to the 15-pin connector of the
KCT-60.
7. Connect the other side of the KCT-18 to the ignition line
of the car.
Note: You must set up using the KPG-135D(K) or KPG-
135D(M).
INSTALLATION

TK-7360/7360H/7360H(V)
9
2
Ignition
line of the car
Square plug
KCT-18
KCT-60
13
14
15
10
11
12
7
8
9
4
5
6
1
2
3
4. External Speaker (Option)
4-1. 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.
4-2. 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 the two crimp terminals of the KES-5 to pins 3 and
12 of the square plug.
4. Connect the square plug to the 15-pin connector of the
KCT-60.
Note:
You must set up using the KPG-135D(K) or KPG-135D(M).
Before the external speaker can be used, you must as-
sign one of the keys as “External Speaker”, using the
KPG-135D(K) or KPG-135D(M).
Square plug
KCT-60
13
14
15
10
11
12
7
8
9
4
5
6
1
2
3
12
3
Black lead
Black/
White lead
5. Voice Guide & Storage Unit (VGS-1: Option)
5-1. Installing the VGS-1 unit in the transceiver
1. Remove the two screws on both sides of the transceiv-
er, then remove the cabinet and top packing from the
transceiver.
2. Remove the cover fitted into the TX-RX unit connector
(CN700).
3. Attach two cushions to VGS-1
4. Insert the VGS-1 connector (CN1) into the TX-RX unit
connector (CN700).
Note: You must set up using the KPG-135D(K) or KPG-
135D(M).
TX-RX PCB
VGS-1
Cushion
(G13-1994-04)
20x30x12mm
Cushion
(G13-1974-04)
21x21x1.0mm
Cushion
(G13-1994-04)
20x30x1.0mm
Cover
CN700
INSTALLATION

TK-7360/7360H/7360H(V)
10
6. GPS Receiver Connection
6-1. Installing the GPS receiver
1. Solder each cable of the connector cables to the TX-RX
unit.
• Red cable
The red cable needs to be connected to the solder pad
(5M) on the TX-RX unit.
• Yellow cable
The yellow cable needs to be connected to the solder
pad GPS (RS-232C-RXD) on the TX-RX unit.
• Black cable
The black cable needs to be connected to the solder pad
(GND) on the TX-RX unit.
TX-RX unit
Component side
Red
5M
Yellow
GPS (RS-232C-RXD)
Black
GND
Note: You must set up using the KPG-135D(K) or KPG-
135D(M).
7. Extended Function: COM Port 0 and
COM Port 1
Location of COM Port 0 and COM Port 1 of the trans-
ceiver is shown below.
COM Port 0
COM Port 1
You must configure the transceiver COM Port 0 and
COM Port 1 using the KPG-135D(K) or KPG-135D(M).
When you set as “Data”, the Function port 1 and 2 will
be automatically fixed as Input ports. The reason for this is
because function port 1 (TXD) and 2 (RXD) share the same
circuit path of TXD and RXD line.
8. Changing Serial Port Level
8-1. Change FNC2 (RXD) of D-SUB 15-pin connec-
tor from TTL level to RS-232C level
FNC2 (RXD) of D-SUB 15-pin connector is configured at
the TTL level as the default value. But you can change this
serial port level to RS-232C level by configuring the port.
Remove the R726 chip jumper and solder the clip jumper
to R727.
8-2. Change FNC1 (TXD) and FNC2 (RXD) of D-SUB
15-pin connector from TTL level to RS-232C level
FNC1 (TXD) and FNC2 (RXD) of D-SUB 15-pin connector
are configured at the TTL level as the default value. But you
can change these serial port level to RS-232C level through
the RS-232C level converter IC (IC700) by configuring the
port.
Remove the R760 and R761 chip jumpers and solder the
chip jumpers to R752, R753, R767 and R768.
TX-RX unit
Component side
R753
R760
R768
R752
R761
R767
R726 R727
■In the case of 8-1.
[TTL level]
R726,R760 and R761: 0Ωchip jumper.
R727, R752, R753, R767 and R768: open.
[RS-232C level]
R727, R760 and R761: 0Ωchip jumper.
R726, R752, R753, R767 and R768: open.
■In the case of 8-2.
[TTL level]
R726,R760 and R761: 0Ωchip jumper.
R727, R752, R753, R767 and R768: open.
[RS-232C level]
R726, R752, R753, R767 and R768: 0Ωchip jumper.
R727, R760 and R761: Open.
INSTALLATION

TK-7360/7360H/7360H(V)
11
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
Holes
3. Disconnect the flat cable from connector of the panel as-
sembly.
Flat cable
4. Hook the finger to hole and while pulling the speaker
holder to this side, expand the panel side of qto e, and
remove the speaker holder from the front panel.
Speaker holder
@
:
.
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
Top packing
TX-RX PCB
Audio amp
DISASSEMBLY FOR REPAIR

TK-7360/7360H/7360H(V)
12
Note:
When you supply power to the TX-RX PCB after remov-
ing the TX-RX PCB from the chassis, solder the positive
and ground terminals of the DC cord (Recommendation:
E30-3448-25) to the + and GND terminals of the TX-RX
PCB.
GND
+
TX-RX PCB
Component side
6. Pull it out behind the chassis by rotating the bush eof
the DC cord 90 degrees in the direction of the arrow af-
ter the screw qin the negative terminal is removed, and
the positive terminal wis removed from the chassis.
DC cord
:
@
.
2. Precautions for Reassembly
1. The tab from qto eis applied the front panel first. And,
rto ytabs inside the front panel is pushed.
Display PCB
Speaker holder
:
@
.
=
;
B
2. When mounting the panel assembly, pass the flat cable
through the hole of the chassis as shown below then
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 (D22 and D23)
When replacing the LED (D22 and D23), it makes it to
length.
LED LED
12mm
13mm
D22 D23
DISASSEMBLY FOR REPAIR

TK-7360/7360H/7360H(V)
13
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 (Q511) after passing through the transmit/receive
switch circuit (D303, D304, D307 and D308) and bandpass
filter (L518, L519 and varactor diodes: D506, D507).
After the signal is amplified (Q511), the signal is filtered
by the bandpass (L513 and varactor diodes: D504, D505) to
eliminate unwanted signals before it is passed to the first
mixer.
The voltage of these diodes are controlled by tracking
the MCU (IC704) 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 (Q507) 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 Q504, 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 (L72-0999-05): CF501
CIRCUIT DESCRIPTION
Fig. 2 Receiver System
ANT
L518,L519
D506,D507
BPF
Q511
RF AMP
Q504
IF AMP
Q507
MIX
XF500
MCF
D303,D304
D307,D308
ANT
SW
IC501
DC OP AMP
Q500
Doubler
X1
TCXO
IC500
FM system IC IC702 Baseband IC
1st local
OSC (VCO/PLL)
CF500 (Wide)
CF501 (Narrow)
TV
CD500
TVC &
APCC
L513
D504,D505
BPF

TK-7360/7360H/7360H(V)
14
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
IC704
pin98
IF_IN MIX_O
IC500
FM System IC
CF501
(Narrow)
CF500
(Wide)
R506 R508
R507
R505
D500 D501
Wide
IC704
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 (IC702) DISC input (pin 16) for characterizing
the signal.
The AF signal output from IC702 is input to the audio
power amplifier (IC706). The AF signal from IC706 switches
between the internal speaker and the speaker jack (J701)
output.
Baseband
IC
IC702
AF PA
IC706 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 (IC704). 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.
FIL_OUT
RSSI
Q505 D502
Noise DET
IC704
MCU
IC500
FM IC
Noise
AMP
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 (D17) and ampli-
fied by Q300. The amplified signal goes to the RF power
module (IC300) 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 IC301. IC301 compares the APC
control voltage (PC) generated by the baseband IC (IC702)
and DC amplifier (IC501) with the detection output voltage.
IC301 generates the voltage to control IC300 and stabilizes
transmission output.
The APC circuit is configured to protect over current of
Q300 and IC300 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 IC300
DC
AMP
IC501
ANT
SW
D303,D304
LPF
ANT
IC301
APC
control
Coupler
circuit
D17
APCC
IC702
pin32
Fig. 7 APC circuit
Fig. 6 Transmitter system
ANT
IC701MIC
MIC
AMP
Q712
SW
MCU
Q6
TX
VCO
Q12
BUFF
AMP
Q13
RF
AMP
DRIVE
AMP
Q300 IC300
RF POWER
module
PLL IC
TCXO
19.2MHz
MIC key
input
IC702
Baseband
IC
IC704 X1 IC2
RF
AMP
Q3
CIRCUIT DESCRIPTION

TK-7360/7360H/7360H(V)
15
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 5, 6.25, 7.5, 10,
12.5 or 15kHz.
A 19.2MHz reference oscillator signal is divided at IC2
by a fixed counter to produce the reference frequency. The
voltage controlled oscillator (VCO) output signal is buffer
amplified by Q12, then multiplied by using a doubler and di-
vided by a programmable counter in IC2.
The divided signal is compared in phase with the refer-
ence signal in the phase comparator in IC2. 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 Q8 in receive mode. The oscillator frequency is
controlled by applying the VCO control voltage, obtained
from the phase comparator to the varactor diodes (D6 and
D7 in transmit mode and D8 and D9 in receive mode) and
assist voltage to the (D10, D12 and D13 in transmit mode
and D11, D14 and D15 in receive mode).
The TX/RX pin is set high in receive mode causing Q7 to
turn off, and turn Q10 on. The TX/RX pin is set low in trans-
mit mode. The outputs from Q8 and Q6 are amplified by
Q12 and sent to the RF amplifiers.
D6,D7
D10,D12,D13
D11,D14,D15
ASTC
IC3 Assist
voltage
Q6
TX VCO
Q12
BUFF
AMP
D8,D9 Q8
RX VCO
Q7,Q10
T/R SW
Charge
pump
OP
AMP
LPF
Phase
comparator
1/M
1/N
REF
OSC
19.2MHz
PLL
DATA
IC2: PLL IC Q3
Doubler
AMP
4-3. Unlock Circuit
During reception, the 9RC signal goes high, the 9TC sig-
nal goes low, and Q400 turns on. Q402 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 Q401
turns on. Q403 turns on and a voltage is applied to 9T.
The MCU in the control unit monitors the PLL (IC2) 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.
IC704
MCU
Q400
SW
Q402
SW
IC2
PLL
Q401
SW
Q403
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 (IC702).
3) Controls the PLL (IC2).
4) Controls the display unit.
IC1
LCD driver
BLED CDATA
SCLK
RDATA
IRQ
CSN
Display unit
IC704
MCU
IC702
Baseband IC
GLED
RLED
MBL
BLC
LCDDI LCDDO LCDCL LCDCE
IC2
PLL
PLLE PLDT PLCK UL
Fig. 10 Control circuit
CIRCUIT DESCRIPTION

TK-7360/7360H/7360H(V)
16
5-1. Memory Circuit
The transceiver has a 512k-bit EEPROM (IC705). The EE-
PROM contains adjustment data. The MCU (IC704) controls
the EEPROM through three serial data lines.
EEPC
IC704
MCU
IC705
EEPROM
EEPD
EEPS
EEPQ
Fig. 11 Memory circuit
5-2. Display Circuit
The MCU (IC704) controls the LCD display and LEDs.
When power is on, the MCU will use the MBL line and
the BLC line to control the key backlight LEDs and LCD
backlight LEDs.
When the transceiver is busy, the GLED line goes high,
Q6 turns on and the green LED (D23) lights after Q5 turns
on. In transmit mode, the RLED line goes high, Q3 and Q4
turn on and the red LED (D23) lights.
BLED will be set high when the function select (FPU set-
ting) is on, Q2 turns on and the blue LED (D22) lights.
The LCD driver (IC1) controls the functions of the LCD
through the LCDDI, LCDDO, LCDCL, LCDCE lines from the
MCU.
Q8
SW
Q7
SW
D5~D9
Key backlight
LCD
Display
IC704
MCU
IC1
LCD
driver
LCDDI
LCDDO
LCDCL
LCDCE
MBL
Q10
SW
Q9
SW
LCD backlight
BLC
Q6
SW
Q5
SW
D23
GLED
Q3
SW
Q4
SW
RLED
Q2
SW
D22
BLED
Fig. 12 Display circuit
5-3. Key Matrix Circuit
The front panel has function keys. Each of them is con-
nected to a cross point of a matrix of the KMI1 to KMO3
ports of the LCD driver. The KMO1 to KMO3 ports are al-
ways high, while the KMI1 to KMI3 ports are always low.
The LCD driver monitors the status of the KMI1 to
KMO3 ports. If the state of one of the ports changes, the
LCD driver assumes that the key at the matrix point corre-
sponding to that port has been pressed.
IC1
LCD
driver
KMO1
KMO2
KMO3
KMI3
KMI2
KMI1
B
VOL DN
CH DN
A
■
CH UP
S
C
VOL UP
Fig. 13 Key matrix circuit
6. Signaling Circuit
6-1. Encode
■Low-speed data (QT, DQT)
Low-speed data is output from pin 26 (LSDO) of the
MCU (IC704). 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 pro-
cessing in the baseband IC (IC702).
■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 (IC702). The signal is mixed with the audio signal
and goes to the VCO and TCXO.
The RX tone is audio output of the baseband IC (IC702)
at the same time to audio power amplifier and then to the
speaker.
X1
TCXO
VCO
IC702
Baseband IC
DTMF/
MSK
IC2
PLL
TCXO
MOD
VCO
MOD
QT/DQT
LSDO
2-TONE
HSDO
IC704
MCU
Fig. 14 Encode
■MSK / DTMF
MSK and DTMF signal is self generated by the baseband
IC (IC702).
The TX deviation adjustment is done by the output gain
of the baseband IC (IC702), 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 (IC702) 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-7360/7360H/7360H(V)
17
■High-speed data (2-tone)
The demodulated signal from the FM IC (IC500) is ampli-
fied by the baseband IC and passes through a band pass
filter and a comparator (IC709) to detect the signal to the
MCU. The MCU digitizes this signal and decodes the signal
after receiving the signal at pin 5 (HSDI).
■MSK/ DTMF
The demodulated signal from the FM IC (IC500) will in-
put to the baseband IC (IC702), 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.
IC702
Baseband IC
IC709
BPF/COMP
DTMF/MSK
decode IC704
MCU
QT/DQT
LSDI
DTMF/MSK
decode data
REPLAY data
2-TONE
HSDI
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,
Q406 turns on, SB switch (Q407) turns on and power (SB) is
supplied to the transceiver.
When the DC power is supplied to the transceiver, volt-
age regulator IC (IC401, IC402) will supply into the MCU
VDD and reset the voltage detect IC (IC404). IC404 will
generate signal (RESET) into the reset terminal on the MCU
(IC704) to carry out a power on reset. Also, MCU (IC704) 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 (IC403) 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 (IC705) 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 Q717, this
voltage turns Q717 on and sets port 18 (INT) to low. As a re-
sult port 78 (SBC) is low, and turns Q406 and Q407 (SB) off.
Fig. 16 Power supply circuit
Q714
SW
Q407
SW
Q406
SW
IC402
AVR
D715
B
IC404
V-DET
IC401
AVR
SBC
IGN
R792
R793
R411R412
INT
5M
3.3M
BATT
IC704
MCU
POWER
SW
POWER
RESET
IC403
V-DET
Q717
SW
SB
IGN
CIRCUIT DESCRIPTION

TK-7360/7360H/7360H(V)
18
MCU: F3650TDFBKEBA (TX-RX unit IC704)
Pin No. Name I/O Function
1 FREQ O Frequency alignment
2 HSDO O High speed data output
3 LCDDO O LCD data output
4 LCDCE O LCD enable
5 HSDI I High speed data input
6 E - GND (Only for bus control)
7 CNVSS I CNVSS for emulator (H: boot mode)
8 LCDDI I LCD data input
9 LCDCL O LCD clock output
10 RESET I Reset
11 XOUT O 11.0592MHz clock output
12 VSS - GND
13 XIN I 11.0592MHz clock input
14 VCC1 - +5V
15 5CC O 5C control
16 MKEY I/O Mic key detect
17 POWKEY I Power key detect
18 INT I MCU stop
19 ASTSW O Assist speed up switch control
20 BEEP O Beep for side tone
21 FNC8 I/O Function port 8
22 FNC7 I/O Function port 7 (REC/SRC)
23 FNC6 I/O Function port 6
24 FNC5 I/O Function port 5
25 FNC4 I/O Function port 4
26 LSDO O Low speed data output
27 SI I Serial data input for VGS
28 SO O Serial data output for VGS
29 FNC1 I/O Function port 1 (TXD to COM port 1)
30 FNC2 I/O Function port 2 (RXD from COM port 1)
31 ECLK - SCLK for emulator
32 FNC3/EBSY I/O Function port 3 / BUSY for emulator
33 TXD I/O TXD to FPU
34 RXD I/O RXD from FPU
35 HOOK I Hook
36 PTT I PTT
37 BSFT O Beat shift (L: beat shift ON)
38 LPOSW O No use
39 EPM - EPM for emulator
40 PLLE O PLL lock enable
41 PLDT O PLL data output
42 PLCK O PLL clock output
Pin No. Name I/O Function
43 PA O Public address control
44 CE - CE for emulator
45 CDATA O Command data output for baseband IC
46 RDATA I Reply data input for baseband IC
47 SCLK O Serial clock output for baseband IC
48 CSN1 O Chip select for baseband IC
49 SP MUTE O Speaker mute control
50 9RC O 9R control
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 EEPS O EEPROM chip select
56 AMPSW O AF AMP switch control
(L: enable / H: disable)
57 EEPQ I EEPROM serial data input
58 EEPD O EEPROM serial data output
59 EEPC O EEPROM serial clock output
60 VCC2 - +3.3V
61 SCRSW O Scrambler switch control (Audio path)
62 VSS - GND
63 NC - No connection
64 TXRX O TX/RX (H: RX / L: TX)
65 BLC O LCD backlight control
66 MBL O Panel and mic key backlight control
67 NC - No connection
68 DST I Destination
69 NC - No connection
70 NC - No connection
71 STSW O
Side tone switch control for VGS playback
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 VGS writing and signaling
77 VGSRX O VGS recording switch control for RX
78 NC - No connection
79 NC - No connection
80 EMG I Emergency key detect
81 NC - No connection
82 NC - No connection
83 UL I PLL unlock detect
84 DMUTE O Det mute control
SEMICONDUCTOR DATA

TK-7360/7360H/7360H(V)
19
Pin No. Name I/O Function
85 MIC1MUTE O Internal mic mute control
86 MIC2MUTE O External mic mute control
87 HSDI I No use
88 LSDI I Low speed data input: QT/DQT/(LTR)
89 TEMP2 I Temperature 2 data input
90 TEMP1 I Temperature 1 data input
91 BATT I Battery voltage input
92 RSSI I RSSI input
SEMICONDUCTOR DATA
Display unit (X54-3740-20)
Ref. No. Part Name Description
IC1 IC LCD driver
Q2 Transistor Indication LED (BLUE) switch
Q3 Transistor TX LED switch control
Q4 Transistor TX LED switch
Q5 Transistor BUSY LED switch
Q6 Transistor BUSY LED switch control
Q7 Transistor KEY backlight switch
Q8 Transistor KEY backlight switch control
Q9 Transistor LCD backlight switch control
Q10 Transistor LCD backlight switch
D1 Zener diode Surge protection
D2 Diode Voltage protection
D5~9 LED KEY backlight
D10 Diode Voltage protection
D11~21 LED LCD backlight
D22 LED Indication (BLUE)
D23 LED TX/BUSY indication
D24 LED LCD backlight
TX-RX unit (X57-8020-XX)
Ref. No. Part Name Description
IC1 IC DC AMP (frequency)
IC2 IC PLL IC
IC3 IC Assist filter
IC300 IC Power module
IC301 IC DC AMP (APC)
IC400 IC Voltage regulator (9V)
IC401 IC Voltage regulator (3.3V)
IC402 IC Voltage regulator (5V)
IC403 IC Voltage detection (INT)
IC404 IC Voltage detection (reset)
IC500 IC FM SYSTEM IC
IC501 IC RX BPF/ APC DC AMP
IC700 IC RS-232C driver
IC701 IC MIC MOD AMP
IC702 IC Baseband IC
IC703 IC Voltage regulator (3.3V)
IC704 IC MCU
IC705 IC EEPROM
COMPONENTS DESCRIPTION
Pin No. Name I/O Function
93 SQIN I Squelch input
94 AVSS - GND
95 CV I VCO lock voltage detect
96 VREF - +5V
97 AVCC - +5V
98 NARROW O Wide/Narrow control (Hi: Narrow)
99 WIDE O Wide/Narrow control (Hi: Wide)
100 HORN O Horn alert switch control

TK-7360/7360H/7360H(V)
20
Ref. No. Part Name Description
IC706 IC AF power AMP
IC707,708 IC Option setting switch
IC709 IC HSD BPF/COMP
IC710 IC MOD/ Option setting switch
Q1 Transistor Buffer AMP (PLL IC clock)
Q2 Transistor Fin filter control
Q3 Transistor Doubler
Q4 FET Assist filter switch
Q5 FET Assist filter switch control
Q6 FET TX VCO
Q7 Transistor TX/RX VCO switch
Q8 FET RX VCO
Q10 Transistor T/R VCO switch
Q11 Transistor Ripple filter
Q12 Transistor Buffer AMP
Q13 Transistor RF AMP
Q300 Transistor TX drive AMP
Q400 Transistor 9R switch control
Q401 Transistor 9T switch control
Q402 Transistor 9R switch
Q403 Transistor 9T switch
Q404 FET 5C switch
Q405 FET 3.3C switch
Q406 Transistor SB switch
Q407 FET SB switch control
Q500 Transistor Doubler (2nd local)
Q502 Transistor W/N switch
Q503 Transistor W/N switch control
Q504 Transistor IF AMP
Q505 Transistor Squelch noise AMP
Q506 Transistor Squelch input switch
Q507 FET 1st mixer
Q508 Transistor Squelch input switch
Q511 FET RF AMP
Q700 Transistor RS-322C RXD buffer
Q702 FET Horn alert switch
Q703 Transistor MIC mute switch
Q704 FET MIC mute switch
Q705 Transistor Horn alert switch control
Q708 Transistor DET AMP (D-SUB)
Ref. No. Part Name Description
Q709 FET TX/RX switch
Q710 Transistor Baseband IC clock AMP
Q712 FET Option switch
Q713 FET DET mute switch
Q714 Transistor IGN switch
Q715 Transistor Beet shift switch
Q716,717 Transistor Over voltage detect switch
Q718,719 FET SP mute switch
Q720 Transistor AF AMP switch
D1 Diode PLL unlock detect
D2~4 Diode Fin filter switch
D6,7 Variable capaci-
tance diode TX VCO frequency
D8,9 Variable capaci-
tance diode RX VCO frequency
D10 Variable capaci-
tance diode RX VCO assist
D11 Variable capaci-
tance diode TX VCO assist
D12,13 Variable capaci-
tance diode RX VCO assist
D14,15 Variable capaci-
tance diode TX VCO assist
D16 Variable capaci-
tance diode Modulation
D17,18 Diode TX/RX RF switch
D300 Zener diode Voltage protection
D301 Diode TX power control
D302 Diode Reverse power detection
D303,304 Diode ANT switch
D305,306 Diode RF power detection
D307,308 Diode ANT switch
D309,310 Zener diode Voltage protection
D400 Surge absorber Voltage protection
D500,501 Diode W/N CF switch
D502 Diode Squelch detection
D504~507 Variable capaci-
tance diode RF BPF tuning
D700~711 Diode Surge protection
D712,713 Diode MIC AGC detection
D715 Zener diode Voltage drop
D716 Diode Speed up (DET mute)
COMPONENTS DESCRIPTION