Kenwood TK-2310R User manual

SERVICE MANUAL
This product complies with the RoHS directive for the European market. This product uses Lead Free solder.
© 2011-1 PRINTED IN JAPAN
B51-8949-00 (Y)PDF
VHF FM TRANSCEIVER
TK-2310R
CONTENTS
GENERAL....................................................2
SYSTEM SET-UP.........................................3
REALIGNMENT...........................................3
DISASSEMBLY FOR REPAIR.....................9
CIRCUIT DESCRIPTION ...........................12
SEMICONDUCTOR DATA .........................17
COMPONENTS DESCRIPTION................18
PARTS LIST...............................................19
EXPLODEDVIEW......................................27
PACKING ...................................................28
ADJUSTMENT...........................................29
PC BOARD
TX-RX UNIT (X57-7880-31)....................34
SCHEMATIC DIAGRAM ............................38
BLOCK DIAGRAM.....................................44
LEVEL DIAGRAM......................................46
OPTIONAL ACCESSORIES
KNB-29N (Ni-MH Battery Pack)............47
KNB-45L (Li-ion Battery Pack).............47
KNB-53N (Ni-MH Battery Pack)............47
SPECIFICATIONS..................BACK COVER
Helical antenna
(T90-1099-15)
Button knob
(SIDE1/SIDE2)
(K29-9426-03)
Knob (Selector)
(K29-9427-03)
Knob (Volume)
(K29-9309-13)
Plastic cabinet assy
(A02-4142-03)
Button knob (PTT)
(K29-9425-03)
Key top (16key)
(K29-9492-12)

TK-2310R
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, elec-
tronic, mechanical, photocopying, recording, or otherwise,
for any purpose without the prior written permission of Ken-
wood.
Disclaimer
While every precaution has been taken in the prepara-
tion of this manual, Kenwood assumes no responsibility
for errors or omissions. Neither is any liability assumed for
damages 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.
Firmware Copyrights
The title to and ownership of copyrights for firmware
embedded in Kenwood product memories are reserved for
Kenwood Corporation. Any modifying, reverse engineering,
copy, reproducing or disclosing on an Internet website of the
firmware is strictly prohibited without prior written consent of
Kenwood Corporation. Furthermore, any reselling, assigning
or transferring of the firmware is also strictly prohibited with-
out embedding the firmware in Kenwood product memories.
GENERAL
INTRODUCTION
SCOPE OFTHIS 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untilallRFconnectorsareveriedse-
cure and any open connectors are properly terminated.
• SHUT OFF and DO NOT operate this equipment near
electrical blasting caps or in an explosive atmosphere.
• Thisequipmentshouldbeservicedbyaqualiedtechni-
cian only.
SERVICE
This transceiver is designed for easy servicing. Refer
to the schematic diagrams, printed circuit board views, and
alignment procedures contained within.
Model Type TX-RX unit Frequency
range Remarks
TK-2310R A X57-7880-
31 245~ 245.9875MHz IF1: 49.95MHz LOC:50.4MHz

TK-2310R
3
SYSTEM SET-UP
REALIGNMENT
Choose the type of transceiver
Transceiver programming
Delivery
Merchandise received
Are you using the speaker microphone?
A personal computer, programming interface (KPG-22/22A),
and FPU (programming software) are required for programming.
(The frequency, TX power HI/LOW, and signaling data are
programmed for the transceiver.)
YES
NO
KMC-21, KMC-45 or KMC-48GPS
Speaker microphone
(Option)
TX/RX 245~245.9875 5.0W TK-2310R
Frequency range (MHz) RF power Type
1. Modes
User mode
Data programming mode
PC test mode PC tuning mode
PC mode
Wireless clone mode
Firmware version information mode
Self-programming mode
Mode Function
User mode For normal use.
PC mode Used for communication between the trans-
ceiver and PC.
Mode Function
Data 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.
Wireless clone
mode Used to transfer programming data from one transceiver to another.
Firmware version
information mode Used to confirm the internal firmware version.
Self-programming
mode You can program the frequency signaling and other function using only the transceiver.
2. How to Enter Each Mode
Mode Operation
User mode PowerON
PC mode Received commands from PC
Wireless clone mode [<B]+PowerON(Twoseconds)
Firmware version
information mode [Side1]+[Side2]+PowerON(Two seconds)
Self-programming mode [S]+PowerON(Twoseconds)

TK-2310R
4
3. PC Mode
3-1. Preface
The transceiver is programmed by using a personal com-
puter, a programming interface (KPG-22/22A, 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 personal computer with
the interface cable and USB adapter (when the interface
cable is KPG-22A, 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rst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.
When data is read from the transceiver, the red LED
lights.
When data is written to by the transceiver, the green LED
lights.
Note:
• The data stored in the personal computer must match
Model Name and Model Type when it is written into EE-
PROM.
• Do not press the [PTT] key during data transmission or
reception.
3-3. KPG-22/KPG-22A Description
(PC programming interface cable: Option)
The KPG-22/22A is required to interface the transceiver
with the computer. It has a circuit in its D-sub connector
(KPG-22: 25-pin, KPG-22A: 9-pin) case that converts the
RS-232C logic level to the TTL level.
The KPG-22/22A connects the SP/MIC connector of the
transceiver to the RS-232C serial port of the computer.
3-4. KCT-53U Description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-22A 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).
3-5. 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 software on this disk allows a
user to program the transceiver transceivers via Program-
ming interface cable (KPG-22/22A).
3-6. Programming with PC
If data is transferred to the transceiver from a PC with the
FPU, the data for each set can be modified.
DatacanbeprogrammedintotheEEPROMinRS-232C
format via the SP/MIC jack.
In this mode the PTT line operate as TXD and RXD data
lines respectively.
List of FPU for transceiver
Model Type FPU
TK-2310R A KPG-138D (A)
PC KPG-22 or KPG-22A or
KPG-22A+KCT-53U
Illustration is KPG-22.
FPU
Tuning cable
(E30-3216-05)
D-SUB
(25-pin)
Transceiver Transceiver Transceiver
KPG-22
PC
Gray
Gray/Black
1.5D-XV Lead wire
1.5D-XV Shield wire
+
–
+
–
SP
MIC
D-SUB
(9-pin)
KPG-22A
PC
USB
KPG-22A
KCT-53U
PC
Fig. 1
REALIGNMENT

TK-2310R
5
REALIGNMENT
4.Wireless Clone Mode
4-1. Outline
“Wireless Clone Mode” copies the transceiver data to an-
other transceiver.
The dealer can copy the transceiver data to another
transceiver even without the use of a personal computer.
4-2. Example
The transceiver can copy the programming data to one or
more transceivers via RF communication.
The clone source and clone target/s must be in wireless
clone mode.
4-3. Operation
1. To switch the clone target/s to Clone mode, press and
holdthe[<B]keywhileturningthetransceiverpowerON.
2. Wait for 2 seconds.“CLONE” appears on the LCD, fol-
lowed by “FRQTBL 1”.
3. Select a channel table number using the [Selector] knob.
4. To switch the clone source to Clone mode, press and
holdthe[<B]keywhileturningthetransceiverpowerON.
5. Wait for 2 seconds.“CLONE” appears on the LCD, fol-
lowed by “FRQTBL 1”.
6. Select the same channel table number as the clone tar-
get/s.
7. Press the [S] key on the clone source to begin data trans-
mission.When the clone target starts to receive data, the
green LED will light and“CLONING” will appear on the
LCD.The source unit will display “MASTER”.
8. When the clone source finishes sending data, a “confir-
mation”tonewillsoundand“COMPLETE”willappearon
the LCD. If data transmission failed while cloning, the tar-
getunitwillproducedanerrortoneand“CLONENG”will
appear on the LCD.
9. If the cloning fails, no data will be available in the target
unit when it is returned to User mode.
10.When the cloning is successful, the target unit's “Scan”
and “Key lock” functions will return to their default values
(Scan=OFF,Keylock=OFF).
11.The source will remain in clone mode after cloning. The
target unit will return to user mode after a successful
cloning.
Note:
• Thedealercanclonedatatotwoormoretransceiversby
repeating the above procedures.
• Ifthe transceiverswirelesscloneMode iscongured as
“Disabled”, the transceiver cannot enter Clone mode.
• The table shown below will cover the frequency tables
used for wireless cloning.
• Wireless clone mode cannot be entered in battery low
state.
• Aunitcannotbea“SourceUnit”ifitisunprogrammed.If
the [S] key is pressed, an “error” tone will sound.
• Onceaunitissettobethesource,itcannotbeatarget
after the data has been transmitted. This protects the
data in the source unit.
• MSKsignalingisusedincloning.
• Electronic interface may cause a failure in data transfer
during Wireless Clone, such as when waveforms or elec-
tromagnetics are being performed at the workbench.
• Wireless clone mode can be used ONLY by the autho-
rized service personnel.
• The wireless clone mode setting must be congured as
“Disable” before being delivered to the end-user.
• To wirelessclone,replace the antennafromboth the
source transceiver and the target transceiver with a dum-
my load.
• ThetransmitoutputpowerisautomaticallysettoLowin
Clone mode.
4-4. Adding the Data Password
If the Data password is set to the transceiver, you must
enter the password to activate a clone mode.The maximum
length of the password is 6 digits.
The following describes how to enter the password.
1. Press and hold the [<B] key for 2 seconds while turning
the transceiver power on.
2. “CLN.LOCK.R”(When the Read authorization password
issettothetransceiver.) /“CLN.LOCK.W” (Whenthe
Overwritepasswordissettothetransceiver.)isdisplayed
on the LCD.
3. Ifthe[selector] knob is rotated while“CLN.LOCK.R”/
“CLN.LOCK.W”isdisplayed,thenumber(0to9)ashes
on the LCD.
When you press the [C>] key, the currently selected num-
ber is determined.
If you press the [A] key, the least digit of the password is
deleted.
If you press the [S] key after entering the password in this
procedure, “FRQTBL 1” is displayed if the entered pass-
word is correct.
 Ifthepasswordisincorrect,“CLN.LOCK.R”/“CLN.LOCK.
W” is redisplayed.
• Clone frequency table
No. Operating frequency 245~245.9875 (MHz)
1 245.00000
2 245.05000
3 245.10000
4 245.15000
5 245.20000
6 245.25000
7 245.30000
8 245.35000
9 245.40000
10 245.45000
11 245.50000
12 245.55000
13 245.60000
14 245.65000
15 245.70000
16 245.75000
17 245.80000
18 245.85000
19 245.90000
20 245.95000

TK-2310R
6
REALIGNMENT
5. Self Programming Mode
Write mode for frequency data and signaling, etc. To be
usedONLYbytheauthorizedservicepersonmaintainingthe
user's equipment.
5-1. Enter to the Self Programming Mode
Press and hold the [S] key for 2 seconds while turning
the transceiver power on.
When the transceiver enters in the self programming
mode, “1- 1” is displayed 2 seconds after “SELF” is dis-
played.
Note:
This mode (self programming mode) cannot be set when
it has been disabled with the FPU.
5-2. Adding the Data Password
If the Data password is set to the transceiver, you must
enter the password to activate a self programming mode.
The maximum length of the password is 6 digits.
The following describes how to enter the password.
1. Press and hold the [S] key for 2 seconds while turning
the transceiver power on.
2. “SLF.LOCK.R”(WhentheReadauthorizationpasswordis
settothetransceiver.)/“SLF.LOCK.W”(WhentheOver-
write password is set to the transceiver.) is displayed on
the LCD.
3. Ifthe[selector]knobisrotatedwhile“SLF.LOCK.R”/“SLF.
LOCK.W”isdisplayed,thenumber(0to9)ashesonthe
LCD.
When you press the [C>] key, the currently selected num-
ber is determined.
If you press the [A] key, the least digit of the password is
deleted.
If you press the [S] key after entering the password in this
procedure, “SELF” is displayed if the entered password is
correct.
 Ifthepasswordisincorrect,“SLF.LOCK.R”/“SLF.LOCK.W”
is redisplayed.
5-3. Channel Selection Mode
In this mode, the Zone or Channel can be selected.
Press and hold the [S] key for 2 seconds while turning
the transceiver power on to enter self programming mode.
When the transceiver enters in the self programming mode,
the transceiver automatically enters the Channel Selection
mode.
2 seconds after displaying “SELF", “1- 1” appears on the
LCD.
The setup item for channel selection mode is as follows.
Setup item Display Remarks
Select
Zone/Channel *** - ***
*** - *** Zone: 1~2
Channel: 1~125
Key operation
Key Key Function
[Selector] Toggle between Zone selection and Channel selec-
tion
[Side1] No action
[Side2] No action
[S] Enter the Item Setting mode
[A] Return to the Channel Selection mode
[<B] Decrement the blinking Zone/Channel number by 1.
Press and hold to decrement in steps of 10.
[C>] Increment the blinking Zone/Channel number by 1.
Press and hold to decrement in steps of 10.
5-4. Item Selection Mode
In this mode, the following items can be selected.
• RXfrequency
• RXsignaling
• TXfrequency
• TXsignaling
• RFpowerHi/Low
• ScanDel/Add
• Beatshifton/off
• Companderon/off
When the [S] key is pressed in the Channel Selection
mode, the transceiver enters the Item Selection mode.
Key operation
Key Key Function
[Selector] The selected item changes
[Side1] No action
[Side2] No action
[S] Enter the Item Setting mode
[A] Return to the Channel Selection mode
[<B] Error tone sounds
[C>] Error tone sounds

TK-2310R
7
REALIGNMENT
5-5. Item Setting Mode
In this mode, the selected item in the Item Selection
mode can be programmed.
When the [S] key is pressed in the Item Selection mode,
the transceiver enters the Item Setting mode.
The setup items for item setting mode are as follows
Setup item Display Remarks
1. RX frequency 1. RX FREQ
→
***.*****
Receive frequency
245.00000~245.98750MHz
2. RX signaling
2. RX SIG
TONEOFF/
QT ***.*/
DQT ***N/
Receive QT/DQT
3.TX frequency *1 3.TX FREQ →
***.***** Transmit frequency
245.00000~245.98750MHz
4.TX signaling *1
4.TX SIG →
TONEOFF/
QT ***.*/
DQT***N/
Transmit QT/DQT
5. RF power Hi/Low 5. PWR *** HI/LOW
6. Scan Del/Add 6. SCN *** DEL/ADD
7. Beat shift on/off 7. SFT *** ON/OFF
8. Compander on/off 8. CMP *** ON/OFF
*1:The setting of the Receive is displayed.
Key operation
Key Key Function
[Selector] Changing the selection item (RX/TX frequency and
RX/TX signaling only)
[Side1] No action
[Side2] No action
[S]
•StorethecurrentsettingsandreturntotheItem
Selection mode without backup.
•AMHzdigitofthefrequencyblinks.(RX/TXfre-
quency only)
•Theiconofthecurrentsignalingconguration.
blinks. (RX/TX signaling only)
[A] Abort the current settings and return to the Item
Selection mode without backup
[<B] Toggle/Decrease the blinking value.
[C>] Toggle/Increase the blinking value.
5-6. Self Programming Mode flow chart
■Channel selection mode flow chart
Data password
[S]+Power ON
SLF.LOCK.R
or / and
Display
SLF.LOCK.W
SELF I - I
Zone Channel
Self programming mode
[S]
[S][A]
Channel selection mode
[S][A]
Zone selection Channel selection
Item setting mode
[S]
Read authorization password /
Overwrite password entry (6 digits)
When the Read
authorization password is
set to the transceiver.
When the Overwrite
authorization password is
set to the transceiver.
[Selector]
[<B] : Zone/Channel number decrement
[C>] : Zone/Channel number increment
■Item selection mode flow chart
Channel selection mode
[S]
[S][A] 1. RX frequency
[Selector]
[S][A] 2. RX signaling
[Selector]
[S][A] 3. TX frequency
[Selector]
[S][A] 4. TX signaling
[Selector]
[S][A] 5. RF power Hi / Low
[Selector]
[S][A] 6. Scan Del / Add
[Selector]
[S][A] 7. Beat shift on / off
[Selector]
[S][A] 8. Compander on / off
Item setting mode
[Selector]

TK-2310R
8
■Item setting mode flow chart
[Selector]
[1. RX frequency]
[S]
[A] MHz setting
Current
setting value
Value is not set
245. 00000
Display
245. 00000
245. 00000
STP 12.5K
--------
--------
[Selector]
[A] kHz setting
[Selector]
[A] Channel step
[Selector]
[<B] / [C>]
[<B] / [C>]
[<B] / [C>]
[S]
[S]
[S]
[S] : Cleared
[A] Frequency clear
[2. RX signaling]
[S]
[A] OFF
[2. RX signaling]
Display
TONE OFF
QT 67.0
DQT 017N
[Selector]
[A] QT
[Selector]
[A] DQT N
[S] : Tone off
[<B] / [C>]
[<B] / [C>]
[S]
[S]
5. RF power Hi / Low
[S]
Hi / Low selection Hi Low
[S] : Stored
[A]:
Not
stored
Display
5.PWR HI
[<B] / [C>]
6. Scan Del / Add
[S]
Del / Add selection Del Add
[S] : Stored
[A]:
Not
stored
Display
6.SCN ADD
[<B] / [C>]
[7. Beat shift on/off] or
[8. Compander on/off]
[S]
on / off selection on off
[S] : Stored
[A]:
Not
stored
Display
7.SFT ON or
8.CMP ON
[<B] / [C>]
[Selector]
6. Firmware Version Information Mode
TurnthetransceiverONwiththe[Side1]and[Side2]keys
held down.Then, the version is displayed during holding the
[Side1] and [Side2] keys.
REALIGNMENT

TK-2310R
9
DISASSEMBLY FOR REPAIR
1. Removing the Case Assembly from the
Chassis
1. Remove the selector knob aand volume knob b.
2. Remove the two screws c.
3. Lift and remove the chassis from the case assembly d.
(Useaat-bladescrewdrivertoeasilyliftthechassis.)
b
a
c
c
d
2. Removing the Holder Assembly from
the Chassis
1. Remove the holder from the chassis.
Note: Taking care not to cut the speaker and microphone
lead.
2. Detach the solder of speaker and microphone lead from
the PCB beforehand.
3. Remove the packing efrom the SP/MIC jack of the TX-
RX unit.
BLU
YEL
RED
BLK
S+
S-
M+
M-
Note: To remove the Holder Assy from
the Chassis,useaflat-head screwdriver
and insert to this hole.
e
3. Removing theTX-RX unit from the
Chassis
1. Remove the eleven screws ffixing the TX-RX unit.
2. Remove the solder of the antenna terminal with a solder-
ing iron g.
3. Remove the solder of the positive terminal with a solder-
ing iron h.
Note: You can remove the TX-RX unit from the chassis
without removing the solder at the positive terminal.
However, in this case, you can not attach the packing
(G53-1605-03) that is on the positive terminal to the
chassis in assembling. So, it is advisable to remove the
solder on the positive terminal first.
4. RemovetheFPCfromtheatcableconnectori.
5. Lift and remove the TX-RX unit from the chassis j.
x2
x2
x2
!0
f
g
h
i
ff
ff
f
f
f
4. Removing the Battery Release Lever
from the Case Assembly
1. Press the upper part of the lever toward the inside of the
caseassembly.Onesideoftheshaftwillberemoveda.
2. Lift and remove the battery release lever from the case
assembly b.
Note: Scratch and widen the glue hole if there is difficulty
in removing the other end of the shaft.
No glue is required when you reassemble the battery re-
lease lever.
a
b

TK-2310R
10
DISASSEMBLY FOR REPAIR
5. Attaching the Battery Release Lever to
the Case Assembly
1. Insert one side of the shaft into the hole at the lever fitting
section on the case assembly a.
Caution: The thin spring (G01-4543-14) should be posi-
tioned above the two tabs of the lever.
2. Tilt the battery release lever slightly forward b, so that
the thick spring (G01-4542-04) is positioned below the
case surface.
3. With the thick spring positioned below the case surface,
attach the other side of the shaft to the case assembly
by pressing the battery release lever cuntil it snaps into
place d.
Caution: Be careful not to tilt the battery release lever
too forward.
If the battery release lever is pushed in this state where
the two tabs come below the case surface, there is a
possibility of damaging the two tabs.
A thin spring
Shaft
Tow tabs
A thick spring
ab
c
d
6. Assembling the Battery Release Lever
1. Place the lever bonto the stopper a.
2. Place the thick springconto the lever.
3. Hook the right and left ends of the thin spring donto the
tabs of the stopper, then place the thin spring onto the
lever e.
4. Slide the shaft through the hole of the stopper and lever f.
a
b
c
d
e
f
7. Attaching the PositiveTerminal to the
Chassis
Always attach the positive terminal to the chassis, using
the following procedures, before mounting the TX-RX unit
onto the chassis.
1. Remove the holder assembly bfrom the packing aof
the positive terminal.
2. Mount the packing of the positive terminal into the chas-
sis hole c.
3. Mount the holder assembly into the packing of the posi-
tive terminal d.
c
b
a
d

TK-2310R
11
DISASSEMBLY FOR REPAIR
8. Mounting the Chassis to the Case
Assembly
1. Confirm that the waterproof packing attached to the
circumference of the chassis is securely inserted in the
groove of the chassis a.
2. Insert the upper part of the chassis into the case assem-
bly b.
3. Press the chassis cand the case assembly together to
attach them.
Caution: If the packing of the SP/MIC does not come
to the correct position after attaching the chassis to the
case assembly, reposition the packing with your fingers.
a
b
c
c
9. Attaching the Antenna Receptacle to
the Chassis
Screw the antenna receptacle to the chassis in the or-
der shown in the drawing so that the antenna receptacle
comes to the center of the case hole.
Tighten this screw second.
Tighten this screw first.
10.The Nuts of theVolume Knob and
Channel Knob
Note that the shapes, colors and heights of nuts of the
volume knob and channel knob are different from one
another. (The nut of volume knob is silver, and the nut of
channel knob is gold.)
Use the following jig when removing the nuts of the vol-
ume knob and channel knob.
 •Jig(PartNo.:W05-1012-00)
for Volume knob
(Long) for Selector knob (Short)
11. Screw sequence for mounting theTX-
RX unit to the chassis
Attach the TX-RX unit to the chassis using the screws in
the order shown in the drawing below.
TX-RX UNIT
Component side view
f
e
d
c
b
a
gh
i
jk

TK-2310R
12
1. Frequency Configuration
The receiver utilizes double conversion. The first IF is
49.95MHz and the second IF is 450kHz. The first Local os-
cillator is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the neces-
sary frequencies.
CIRCUIT DESCRIPTION
2. Receiver System
The receiver system is shown in Figure 2.
Fig. 1 Frequency configuration
Fig. 2 Receiver system
TX/RX: 245~245.9875MHz
294.95~
295.9375MHz
245~245.9875MHz
1st MIX MCF SP
MIC
CF
450kHz
ANT
ANT
SW RF AMP IF System
X3
multiply
PLL
VCO
49.95MHz 50.4MHz
TX
AMP RF AMP
AF
AMP
MIC
AMP
AF
baseband
TCXO 16.8MHz
SP
ANT
IC401
IF,MIX,DET
Q406
1st MIX
ANT
SW
Q403
X3 multiply
2nd Local
X1
TCXO
16.8MHz
AF
baseband
IC812
BPF1
BPF Q407 RF AMP XF401
MCF
Q405
IF AMP IC815 AF PA
BPF1 1st Local
BPF
CF402
2-1. Front End (RF Amplifier) Circuit
The signal coming from the antenna passes through the
transmit / receive switching diode circuit (D201, D202, D203
and D204) and a BPF (L418 and L419), and is then ampli-
fied by the RF amplifier (Q407).
The resulting signal passes through a BPF (L416 and
L414) and goes to the mixer. These BPFs are adjusted by
variable capacitance diodes (D408, D407, D405 and D404).
The input voltage to the variable capacitance diodes is a
regulated voltage output from the DC amplifier (IC811).
2-2. First Mixer
The signal from the front end is mixed with the first local
oscillator signal generated in the PLL circuit by Q406 to pro-
duce a first IF frequency of 49.95MHz.
The resulting signal passes through the XF401 MCF to
cut the adjacent spurious and provide the optimum charac-
teristics, such as adjacent frequency selectivity.

TK-2310R
13
2-3. IF Amplifier Circuit
The first IF signal is passed through a four-pole mono-
lithic crystal filter (XF401) to remove the adjacent channel
signal. The filtered first IF signal is amplified by the first IF
amplifier (Q405) and is then applied to the IF system IC
(IC401).
The IF system IC provides a second mixer, limiting
amplifier, quadrature detector and RSSI (Received Signal
Strength Indicator). The second mixer mixes the first IF sig-
nal with the 50.4MHz signal of the second local oscillator
output (Q403) and produces the second IF signal of 450kHz.
The second IF signal is passed through the ceramic filter
(CF402) to remove the adjacent channel signal. The filtered
second IF signal is amplified by the limiting amplifier and
demodulated by the quadrature detector with the ceramic
discriminator (CD401). The demodulated signal is routed to
the audio circuit.
2-4. Audio Amplifier Circuit
The demodulated signal from IC401 is sent to an audio
power amplifier (IC815) through baseband IC (IC812), where
it is amplified and output to the speaker.
2-5. Squelch Circuit
Part of the AF signal from the IC401 enters the FM sys-
tem IC (IC401) again, and the noise component is amplified
and rectified by a filter and an amplifier to produce a DC
voltage corresponding to the noise level.
The DC signal from the FM IC goes to the analog port of
the MCU (IC820). IC820 determines whether or not to output
sounds from the speaker by checking if the input voltage is
higher or lower than the preset value.
To output sounds from the speaker, IC820 sends a high
signal totheAF_CONTlineandturns IC815onthrough
Q813, Q814, Q818 and Q819.
CIRCUIT DESCRIPTION
3.Transmitter System
3-1. Microphone Amplifier Circuit
The signal from the microphone is limited by the AGC
circuit, which is composed of D807, D808, Q810, Q811 and
the mute switch (Q809). IC812 is composed of a high-pass
filter, low-pass filter and pre-emphasis/IDC circuit.
The signal from the microphone and the low speed data
from the MCU (IC820) enter the baseband IC (IC812) and
pass through each path and are mixed inside the IC.
TheoutputsignalfromthebasebandICgoestotheVCO
modulation input.The other output signal passes through the
amplier(IC3)andgoestotheTCXOmodulationinput.
AMP
IC3
AGC
SW
D807,808
Q810,811
MIC_MT
X1
TCXO
VCO
LSD
OUT
IC812
Q809
MIC
Baseband
IC
Fig. 4 Microphone amplifier circuit

TK-2310R
14
3-2. Driver and Final Amplifier Circuit
The signal from the T/R switch (D18 is on) is amplified by
the RF AMP (Q201) and pre-drive amplifier (Q203) to 50mW.
The output of the pre-drive amplifier is amplified by the
drive amplifier (Q204) and the RF final amplifier (Q205) to
5.0W (1W when the power is low).
The drive amplifier and the RF final amplifier consist of
twoMOSFETstages.
The output of the RF final amplifier is then passed
through the antenna switch (D201 and D202) and the har-
monic filter (LPF), and is applied to the antenna terminal.
3-3. APC Circuit
The APC circuit always monitors the current flowing
through the drive amplifier (Q204) and the RF power ampli-
fier (Q205) and keeps a constant current. The voltage drop
at R307, R309 and R310 is caused by the current owing
through the RF final amplifier. This voltage is applied to the
differential amplifier IC301 (1/2).
IC301 (2/2) compares the output voltage of IC301 (1/2)
with the reference voltage from IC811. The output of IC301
(2/2) controls the VG of the RF power amplifier and the drive
amplifier to make both voltages the same.
The change of power high/low is carried out by the
change of the reference voltage.
CIRCUIT DESCRIPTION
Fig. 5 Driver and final amplifier and APC circuit
4. Frequency Synthesizer Unit
4-1. Frequency synthesizer
The frequency synthesizer consists of theTCXO (X1),
VCO,PLL-IC(IC1),andbufferampliers.
TheTCXOgenerates16.8MHz.Thefrequencystabilityis
1.5ppm within the temperature range of –30°C to +60°C.The
frequency tuning and modulation of theTCXO are done to
applyvoltagetopin1oftheTCXO.TheoutputoftheTCXO
is applied to pin 10 of PLL-IC.
TheVCOconsistsof2VCOandcoversadualrangeof
245~245.9875MHzand294.95~295.9375MHz.TheVCO
generates 294.95~295.9375MHz for providing the first local
signal for reception. The operating frequency is generated
by Q5 in transmitting mode and Q4 in receiving mode. The
oscillationfrequencyiscontrolledbyapplyingtheVCOcon-
trol voltage, obtained from the phase comparator (IC1) to
the variable capacitance diodes (D6 and D9 in transmitting
mode and D7, D10 and D12 in receiving mode)
The TX/RX pin of IC820 goes “high” in transmitting mode,
causing Q7 and Q4 to turn off, and Q5 turn on. The TX/RX
pin goes “low” in receiving mode.
The output from Q4 and Q5 are amplified by a buffer am-
plifier (Q8) and Q2, and then sent to the PLL-IC.
The PLL-IC consists of a prescaler, reference divider,
phase comparator, and charge pump. The input signal from
pin 10 and 17 of the PLL-IC is divided down and compared
at the phase comparator. The pulsed output signal of the
phase comparator is applied to the charge pump and trans-
formed into a DC signal in the loop filter (LPF). The DC sig-
nalisappliedtotheCVoftheVCOandlockedtokeepthe
VCOfrequencyconstant.
PLL data is output from PL_STB (pin 20), PL_CLK (pin 8),
and PL_DAT (pin 21) of the MCU (IC820). The data is input
to the PLL-IC when the channel is changed or transmission
is changed to reception and vice versa.PLL lock condition is
always monitored by pin 18 (PL_UL) of the MCU. When the
PLL is unlocked, PL_UL goes low.
ANT
RF FINAL
AMP ANT SW LPF
From
T/R SW
(D18)
D201,202
+B
PC/BPF2
(IC811)
RF
AMP
Q201 Q205
DRIVE
AMP
Q204
VDD VG
Pre-DRIVE
AMP
Q203
IC301
(1/2) IC301 (2/2)
R307
R309
R310

TK-2310R
15
RF
AMP
Baseband
IC
VCO
PLL
MCU
IC820 PL_STB,PL_CLK,PL_DAT
IC1
PL_UL
17
10
21
7
BUFF
SWLPF
To mixer
VC
Q9
BUFF
Q8
TCXO
X1 IC812
SW To
RF AMP
TX/RX
(TX: High)
D18
D17Q2
CV
Fig. 6 PLL block diagram
5. Control Circuit
The control consists of the MCU (IC820) and its peripher-
al circuits. It controls the TX-RX unit. IC820 mainly performs
the following;
1) Switching between transmission and reception by PTT
signal input.
2) Reading channel information, frequency, and program
data from the memory circuit.
3) Sending frequency program data to the PLL.
4) Controlling squelch on/off via the DC voltage from the
squelch circuit.
5) Controlling the audio mute circuit via the decode data in-
put.
6) Transmitting tone and encode data.
5-1. Frequency Shift Circuit
The MCU (IC820) and baseband IC (IC812) operates at
a clock frequency of 19.2MHz. The oscillator circuit has the
baseband IC. This oscillator has a circuit that shifts the fre-
quency via Beat shift switch (Q806).
A beat sound may be able to be evaded if “Beat Shift“ is
settoONwhenitisgeneratedintheinternalspurioustrans-
mission modulated sound of the transceiver.
IC812
Baseband IC
H: OFF
L: ON
MCU
XIN
X802
39 40
XOUT XIN
Q806
C846 R857
MCU
BSHIFT
Fig. 7 Frequency shift circuit
5-2. Memory Circuit
The Memory circuit consists of the MCU (IC820) and
EEPROM(IC810).TheEEPROMhasacapacityof512kbits
and stores the channel information, the last channel data,
the scan on status, and other parameters.
■EEPROM
Note:
 TheEEPROMstorestuning data(Deviation, Squelch,
etc.).
 RealignthetransceiverafterreplacingtheEEPROM.
MCU EEPROM
IC820 IC810
Fig. 8 Memory circuit
5-3. Low BatteryWarning
The battery voltage is monitored by the MCU (IC820 pin
63: BATT). When the battery voltage falls below the voltage
set by the Low Battery Warning adjustment, the red LED
blinks, notifying the operator that it is time to replace the bat-
tery (when the always option (default setting) under the Bat-
tery Warning function in the FPU is selected). If the battery
voltage falls bellow 5.6V, the transceiver does not transmit
and the warning tone beeps while the PTT switch is pressed.
Low battery warning Battery status
The red LED blinks during
transmission. The battery voltage is low but the transceiver is still usable.
The red LED blinks and the
warning tone beeps while the
PTT switch is pressed.
The battery voltage is lowand
the transceiver cannotbe used
to make calls.
63
IC820
MCU
BATT
R824
SB
R829
Fig. 9 Low battery warning
CIRCUIT DESCRIPTION

TK-2310R
16
5-4. Key Input
Keys and channel selector circuit.
The signal from the keys and channel selector are direct-
ly input to the MCU, as shown in Figure 10.
C
B
A
S
KEY1O KEY2O KEY3O KEY4O KEY1I KEY2I KEY3I KEY4I
EN2 EN1
Selector
IC820
MCU
PF2 PF1 PTT
Side1
Side2
PTT
123
456
789
0#
Fig. 10 Key input
6. Signaling Circuit
6-1. Encode
■Low-speed data (QT, DQT)
Low-speed data is output from pin 2 of the MCU.The sig-
nal passes through the low pass CR filter, and goes to the
baseband IC (IC812).The signal is mixed with the audio sig-
nalandgoes to theVCO andTCXO (X1)modulationinput
after passing through the D/A converter inside the baseband
IC (IC812) for BAL adjustment.
HSDENC
LSDO
IC820
MCU
IC812
Baseband IC
TCXO
3
2
21
MIC
23
MOD1
VCO
24
MOD2
18
ALT
Fig. 11 Encode
■High-speed data (2-tone)
High-speed data (HSD) is output from pin 3 of the MCU.
HSD deviation made by an adjustment in the MCU is passed
through the low pass CR filter and then applied to the base-
band (IC812).
The signal is mixed with the audio signal and goes to the
VCOandTCXO.
■MSK/DTMF
The MSK/DTMF signal is generated in the baseband IC
(IC812). The signal passes through the D/A converter (in-
sidethe basebandIC812) andisroutedtotheVCO.When
encoding the MSK/DTMF, the microphone input signal is
muted.
6-2. Decode
■QT/DQT
The output signal from the IF IC (IC401) enters the MCU
(IC820) through IC812. IC820 determines whether or not
the QT or DQT matches the preset value, and controls the
AFSW and speaker output sounds according to the squelch
results.
■2-tone
Part of the received AF signal output from the IF IC
(IC401) passes through the baseband IC (IC812) goes to
HSD amplifier IC808, is compared, and then goes to IC820.
IC820 checks whether or not the 2-tone data is necessary. If
it matches, IC820 carries out a specified operation, such as
turning the speaker on.
■MSK (Fleet Sync)
The MSK input signal from the IF IC (IC401) goes to
IC812. The decoded information is then processed by the
MCU.
■DTMF
The DTMF input signal from the IF IC (IC401) goes to
IC812. The decoded information is then processed by the
MCU.
7. Power Supply
There are five 5V power supplies and three 3.3V power
supplies: 50M, 50V, 50C, 50R, 50T, 33M, 33MS and 33B.
50M and 33M are always output while the power is on.
33MS is always output, but turns off when the power is
turned off, to prevent malfunction of the MCU.
50C is a common 5V and is output when SAVE is not set
toON.
50R is 5V for reception and output during reception.
50T is 5V for transmission and output during transmis-
sion.
50V is 5V for the SP/MIC connector.
33B is 3.3V for the baseband IC (IC812).
CIRCUIT DESCRIPTION

TK-2310R
17
MCU: F363BEDFEKDLC (TX-RX unit: IC820)
Pin No. Signal Name I/O Function
1 BSHIFT OCPU clock frequency shift
2LSDO O QT/DQT output
3 HSDENC O2-Tone/BEEP output
4 EN1 I Encoder detect for direction
5 EN2 I Pull up for P8_4 (EN2)
6MODE I (Using E8a emulator)
7 NC - NC
8 PL_CLK OPLL IC clock output
9 RESET - Hardware reset input
10 XOUT - NC
11 VSS - GND
12 XIN - Main clock input (19.2MHz)
13 VCC - 3.3V
14 EMPTT OEmergency PTT
15 EN2 I Encoder interrupt
16 CM_IRQ I Baseband IC IRQ
17 INT0 I Battery low interrupt (4.5V)
18 PL_UL I PLL IC unlock input
19 PTT I PTT input
20 PL_STB OPLL IC STB output
21 PL_DAT OPLL IC data output
22 NC NC
23 33MSC O33MS control for switched 33M
24 TXD OSerial data (FPU) to PC
25 RXD I Serial data (FPU) from PC
26 EM_CLK OFor E8a emulator
27 APCSW OAPC enable/disable
28 TX/RX OTX/RX switch H:TX, L: RX
29 50VC O5V AVR control for GPS MIC op-
tion/OPTDET
30 5TC O5T control output
31 EP_DTO O EEPROMICdataoutput
32 EP_CLK O EEPROMICclockoutput
33 CM_DTO O Baseband IC data output
34 EMP OFor FDT tool
35 5RC O5R control output
36 EP_WP O EEPROMICwriteprotectoutput
37 EP_DTI I EEPROMICdatainput
38 EP_CS O EEPROMICchipselectoutput
39 CE OFor FDT tool
40 CM_CLK OBaseband IC clock output
SEMICONDUCTOR DATA
Pin No. Signal Name I/O Function
41 CM_DTI I Baseband IC data input
42 CM_CNS OBaseband IC chip select output
43 DC_SW OAPC voltage discharge switch
44 KEY1O O Key matrix output 1
45 KEY2O O Key matrix output 2
46 KEY3O O Key matrix output 3
47 KEY4O O Key matrix output 4
48 KEY1I I Key matrix input 1
49 KEY2I I Key matrix input 2
50 KEY3I I Key matrix input 3
51 KEY4I I Key matrix input 4
52 PF1 l Side key 1 input
53 PF2 l Side key 2 input
54 LCDBL OLCD backlight switch
L:ON,H:OFF
55 LC_INH OLCD diver IC INH output
56 LC_CLK OLCD diver IC clock output
57 LC_DAT OLCD diver IC date output
58 LC_CE OLCD diver IC chip enble output
59 LC_MOD O LCD diver IC mode output
60 HSDDEC I 2-Tone/5-Tone decode input
61 QT/DQT I QT/DQT decode input
62 CVIN I VCOlockvoltagereadingfor
auto alignment
63 BATT I Battery level input
64 VOX IVOXlevelInput
65 BUSY I RX busy input
66 TH_DET I Temperature level input
67 RSSI I RSSI input
68 WID/NAR OWide narrow switch
H:WID, L: NAR
69 ASSIST OAssist switch
70 AF_MUT OSpeaker mute output
71 MIC_MT OMic mute output
72 MAN_DN I MAN down
73 5CC O5C control output
74 LEDBLU OBlue LED light control
75 AVSS - GND
76 LEDGRN OGreen LED light control
77 VREF - 3.3V for A/D reference
78 AVCC - 3.3V
79 LEDRED ORed LED light control
80 OPTDET IOptiondetectioninput

TK-2310R
18
TX-RX unit (X57-7880-31)
Ref. No. Use / Function Operation / Condition
IC1 PLL IC TX/RX 1st local
IC2 OPamplier CVIN/CVADJ amplifier
IC3 OPamplier APC control
IC301 OPamplier CVIN/CVADJ amplifier
IC401 FM IC RX FM system
IC801 5V AVR 50M
IC802 5V AVR 50C
IC803 5V AVR 50V
IC804 3.3V AVR 33M
IC805 Reset IC Low battery level detector
IC806 3.3V AVR 33B
IC807 Reset IC MCU reset signal
IC808 OPamplier HSD amplifier
IC810 EEPROM EEPROM
IC811 OPamplier RX BPF tuning
IC812 Baseband IC Audio processor
IC815 AF amplifier Audio power amplifier
IC817 OPamplier VOXsignalamplier
IC820 MCU Microcontroller unit
IC821 LCD driver
Q2 RF buffer PLL-IC input
Q3 Ripple filter TX/RXVCO
Q4 Oscillator RXVCO
Q5 Oscillator TXVCO
Q6 DC switching TXVCOswitching
Q7 DC switching RXVCOswitching
Q8 RF buffer VCOoutput
Q9 RF amplifier VCOoutput
Q11,12 DC switching Assist switching
Q201 RF amplifier TX amplifier
Q203 RF amplifier Pri-drive amplifier
Q204 FET amplifier Drive amplifier
Q205 FET amplifier Final power amplifier
Q301~306 DC switching TX FET bias
Q403 Tripler 2nd local (16.8MHz x 3)
Q405 IF amplifier 1st IF (49.95MHz)
Q406 Mixer 1st mixer
Q407 RF amplifier RX (VHF)
Q801 DC switching Blue LED
Q802 DC switching 50T from 50M
Q803 DC switching 50R from 50M
COMPONENTS DESCRIPTION
Ref. No. Use / Function Operation / Condition
Q804 DC switching 33MS from 33M
Q805 DC switching Green/Red LED
Q806 DC switching MCU clock shift circuit
Q809 DC switching MIC mute
Q810,811 Amplifier AGC control
Q813 DC switching Q814 control
Q814 DC switching AF power mute
Q815 Level converter EXT PTT/RXD
Q816 Level converter EXT TXD
Q817 DC switching Pop noise mute
Q818,819 AF switching AF power mute
Q820 DC switching Q821 control
Q821 DC switching Backlight LED
Q822 DC switching EMG PTT
D6,7,9 Varicap TXVCOtune
D10,12 Varicap RXVCOtune
D13 Speed up Ripple filter
D14 Varicap TXVCOassisttune
D15 Varicap RXVCOassisttune
D16 Varicap Modulation
D17,18 Switching TX-f/RX 1st local
D201~204 Switching TX/RX ANT switching
D301 5.1V zone Overvoltageprevention
D404,405 Varicap RX RF BPT tune
D407,408 Varicap RX RF BPT tune
D801 LED (green) Busy
D803 Protection Power supply
D804 LED (blue) Signal
D805 LED (red) TX
D806 5.1V zener Overvoltageprevention
D807,808 Detection MIC level
D809,810 Detection VOXlevel
D817 Speed up LCD back light
D818~821 LED (yellow) Backlight
D824~828 LED (yellow) Backlight
D829 Key input detect Key1I input
D830 Key input detect Key2I input
D831 Key input detect Key3I input
D832 Key input detect Key4I input

TK-2310R
19
PARTS LIST
Chip capacitor
Code L W T
Empty 5.6±0.5 5.0±0.5 Less than 2.0
A4.5±0.5 3.2±0.4 Less than 2.0
B4.5±0.5 2.0±0.3 Less than 2.0
C4.5±0.5 1.25±0.2 Less than 1.25
D3.2±0.4 2.5±0.3 Less than 1.5
E3.2±0.2 1.6±0.2 Less than 1.25
F2.0±0.3 1.25±0.2 Less than 1.25
G1.6±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 DFG
(pF) ±0.1 ±0.25 ±0.5 ±1 ±2
CAPACITORS
C C 4 5 T H 1 H 2 2 0 J
1234 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 PRS 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 KMXZP No code
(%) ±0.25 ±0.5 ±2 ±5 ±10 ±20 +40 +80 +100 More than 10 µF : –10~+50
–20 –20 –0 Less than 4.7µF : –10~+75
• Voltage rating
2nd word ABC 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.
12345 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
12345 6 7 5 = Voltage rating
eulaV=6)F,B()pihC( 7 = Tolerance
RESISTORS
• Chip resistor (Carbon)
(EX) R D 7 3 E B 2 B 0 0 0 J
12345 6 7
(Chip) (B, F)
• Carbon resistor (Normal type)
(EX) R D 1 4 B B 2 C 0 0 0 J
12345 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 220 = 22pF
100 = 10pF reilpitluMFp001=101
102 = 1000pF = 0.001µF 2nd number
103 = 0.01µF 1st number
L
W
T
• Dimension

TK-2310R
20
✽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
Ref. No. Address Parts No. Description Desti-
nation
New
parts
TK-2310R
TX-RX UNIT (X57-7880-31)
PARTS LIST
1 1A
✽
A02-4142-03 PLASTIC CABINET ASSY
3 2C  B09-0725-03 CAPACCESSORY
4 1B  B43-1622-04 BADGE(FRONT)
5 1B B43-1623-04 BADGE(REAR)
6 1C
✽
 B62-2310-00 INSTRUCTIONMANUAL
9 1A D10-0649-03 LEVER
10 1A D21-0863-04 SHAFT(LEVER)
11 1A  D32-0441-13 STOPPER(LEVER)
13 2A E04-0477-15
RFCOAXIALRECEPTACLE(SMA)
14 3A  E23-1253-04 TERMINAL(GROUND)
15 2A E23-1254-04 TERMINAL(+VE)
16 1B E37-1165-15
PROCESSEDLEADWIRE(SP/RED)
17 1B E37-1514-05 PROCESSEDLEADWIRE(SP/BLK)
19 3A F20-3353-14 INSULATING SHEET(+VE)
21 2A  G01-4542-04 COILSPRING
22 2A  G01-4543-14 COILSPRING
23 2B  G10-1330-04 FIBROUSSHEET(IC)
24 2A G11-4465-04 RUBBER SHEET(FET)
26 3A  G13-2009-04 CUSHION(CHASSIS)
27 3A  G13-2033-04 CUSHION(-VE)
28 3A  G13-2034-14 CUSHION(CHASSIS)
29 3B  G13-2038-34 CUSHION(CF402)
30 3B
✽
 G13-2340-14 CUSHION(X57)
31 2B
✽
 G13-2358-04 CUSHION(IC820)
34 3B
✽
 G13-2360-04 CUSHION(X57)
35 3A G53-1604-03 PACKING(CHASSIS)
36 2A G53-1605-03 PACKING(+VE)
37 2B G53-1802-04 PACKING(SMA)
39 2B  G53-1845-03 PACKING(VOL/SEL)
40 1B G53-1846-03 PACKING(SPK)
41 1B G53-1847-03 PACKING(SP/MIC)
46 2A  J19-5463-03 HOLDER(+VE)
47 2A  J19-5473-03 HOLDERASSY(+VE)
48 2C  J19-5549-03 HOLDER(SP/MIC)ACCESSORY
49 1B
✽
 J19-5558-04 HOLDERASSY(SPK)
50 2C  J29-0734-05 BELTCLIPACCESSORY
52 2A J82-0127-05 FPC
54 1B  K29-9309-13 KNOB(VOL)
55 1A  K29-9425-03 BUTTONKNOB(PTT)
56 1A  K29-9426-03 BUTTONKNOB(SIDE1,2)
57 1B  K29-9427-03 KNOB(SELCTOR)
58 1A
✽
 K29-9492-12 KEYTOP(16KEY)
A 2A  N14-0848-05 CIRCULARNUT(SELCTOR)
B 2B  N14-0849-05 CIRCULARNUT(VOL)
C 2A N30-2604-48
PAN HEAD MACHINE SCREW(SMA)
D 3A N30-2606-48 PAN HEAD MACHINE SCREW
E 2B,3A N83-2005-48 PAN HEAD TAPTITE SCREW
60 2C  N99-2046-05 SCREWSETACCESSORY
VR1 2A  R31-0676-05 VARIABLERESISTOR
62 1B T07-0787-05 SPEAKER
63 2D
✽
T90-1099-15 HELICALANTENNAACCESSORY
64 1B T91-0672-05 MIC ELEMENT(WITH LEAD WIRE)
W1 2A  W02-3748-05 ENCODER(SELECTOR)
TK-2310R
TX-RX UNIT (X57-7880-31)
101 2B  B11-1876-03 ILLUMINATIONGUIDE(LCD) 
102 2B
✽
B11-1877-14 FILTER(LCD)
103 2B B38-0935-05 LCD
D801 B30-1790-05 LED(BLUE)
D804 B30-2314-05 LED(GREEN)
D805 B30-2315-05 LED(RED)
D818-821
✽
 B30-2337-05 LED(YELLOW)   
D824-828
✽
 B30-2337-05 LED(YELLOW)   
C1 CC73HCH1H101J CHIP C 100PF J
C3 CC73HCH1H100B CHIP C 10PF B
C4 CK73HB1H102K CHIP C 1000PF K
C5 CC73HCH1H101J CHIP C 100PF J
C7 CC73HCH1H100B CHIP C 10PF B
C8 CC73HCH1H101J CHIP C 100PF J
C9 CK73HB1E103K CHIP C 0.010UF K
C10 CC73HCH1H101J CHIP C 100PF J
C11 CK73HB1E103K CHIP C 0.010UF K
C12 CC73HCH1H101J CHIP C 100PF J
C14 CK73HB1A473K CHIP C 0.047UF K
C15 CK73HB1A224K CHIP C 0.22UF K
C16 ,17 CC73HCH1H101J CHIP C 100PF J
C18 CK73HB1E103K CHIP C 0.010UF K
C19 CC73HCH1H101J CHIP C 100PF J
C20 CK73HB1H471K CHIP C 470PF K
C21 CK73HB1E103K CHIP C 0.010UF K
C23 CS77CA1VR15M CHIP TNTL 0.15UF 35WV
C24 CS77CA1C3R3M CHIP TNTL 3.3UF 16WV
C25 C92-0863-05 CHIP TNTL 0.047UF 35WV
C27 CK73HB1A224K CHIP C 0.22UF K
C28 CK73HB1H471K CHIP C 470PF K
C29 CC73HCH1H070B CHIP C 7.0PF B
C30 CC73HCH1H150J CHIP C 15PF J
C33 CC73HCH1H120J CHIP C 12PF J
C34 CC73HCH1H470J CHIP C 47PF J
C35 CK73HB1E103K CHIP C 0.010UF K