Transcript
VHF FM TRANSCEIVER
TK-2160 SERVICE MANUAL © 2003-8 PRINTED IN JAPAN B51-8652-00 (S) 1214
CONTENTS
Antenna (KRA-26: Option)
Knob (CH-SELECTOR) (K29-9280-13)
Knob (VOLUM E) (K29-9278-13)
Cabinet assy (A02-3826-33)
Knob (PTT) (K29-9279-03)
Does not come w ith antenna. Antenna is available as an option.
GENERAL ............................................................. 2 SYSTEM SET-UP ................................................. 2 OPERATING FEATURES ..................................... 3 REALIGNM ENT .................................................... 4 DISASSEM BLY FOR REPAIR .............................. 5 CIRCUIT DESCRIPTION ....................................... 7 INSTALLATION .................................................. 11 TERM INAL FUNCTION ...................................... 12 SEM ICONDUCTOR DATA ................................. 13 COM PONENTS DESCRIPTION ......................... 14 PARTS LIST ........................................................ 15 EXPLODED VIEW ............................................... 23 PACKING ............................................................ 24 ADJUSTM ENT ................................................... 25 PC BOARD TX-RX UNIT (X57-672X-XX) ........................ 30 SCHEM ATIC DIAGRAM ..................................... 34 BLOCK DIAGRAM .............................................. 38 LEVEL DIAGRAM ............................................... 40 KSC-30 ................................................................ 41 SPECIFICATIONS ............................ BACK COVER
TK-2160 GENERAL / SYSTEM SET-UP INTRODUCTION
PERSONAL SAFETY
SCOPE OF THIS M ANUAL
The follow ing precautions are recommended for personal safety: ● DO NOT transmit until all RF connectors are verified secure and any open connectors are properly terminated. ● SHUT OFF and DO NOT operate this equipm ent near electrical blasting caps or in an explosive atmosphere. ● This equipment should be serviced by a qualified technician only.
This manual is intended for use by experienced technicians familiar w ith similar types of commercial grade communications equipment. It contains all required service information for the equipment and is current as of the publication date. Changes w hich may occur after publication are covered by either Service Bulletins or M anual Revisions. These are issued as required.
ORDERING REPLACEM ENT PARTS When ordering replacement parts or equipment information, the full part identification number should be included. This applies to all parts, components, kits, or chassis. If the part number is not know n, include the chassis or kit number of w hich it is a part, and a sufficient description of the required component for proper identification.
SERVICE This radio is designed for easy servicing. Refer to the schematic diagrams, printed circuit board view s, and alignment procedures contained w ithin.
Unit Model
TX-RX Unit
Frequency range
Remarks
& destination TK-2160 K,M X57-6720-10
136~174M Hz
IF1 : 49.95M Hz LOC : 50.4M Hz
SYSTEM SET-UP M erchandise received License and frequency allocated by FCC Frequency range (M Hz) RF pow er
Choose the type of transceiver Transceiver program m ing
Are you using the optional antenna?
TX/RX 136~174
NO
Delivery
2
Type TK-2160 (K,M)
A personal com puter (IBM PC or com patible), program m ing interface (KPG-22), and program m ing softw are (KPG-82D) are required for program m ing. (The frequency, TX pow er HI/LOW, and signalling data are program m ed for the transceiver.)
YES
KRA-22 or KRA-26 Optional antenna
YES
KM C-17 or KM C-21 Speaker m icrophone
NO
Are you using the speaker m icrophone?
5.0W
(Option)
TK-2160 OPERATING FEATURES 1. Operation Features
GETTING ACQUAINTED
Installing the (Optional) Antenna
Antenna
Screw the antenna into the connector on t he t op of t he t ransceiver by holding t he antenna at its base and turning it clockw ise until secure.
1 2
3
Installing the Belt Clip Note: When first installing the belt clip, you must remove the battery pack from the rear of the transceiver.
4
1
5
2 3
Remove the tw o screw s from the rear of the transceiver, then remove the small, plastic black covering that w as held in place. Insert the belt clip mount into the space on the rear of the transceiver. Using the 2 screw s, affix the belt clip in place.
Note: Do not dispose of t he plast ic black covering! If you remove the belt clip, replace the covering into the space on the rear of the transceiver. Either this covering or the belt clip must be in place, otherw ise the battery pack may not remain installed properly.
Inst alling t he Cover over t he Speaker/ Microphone Jacks Note: W hen inst alling t he speaker/ microphone jack cover, you must remove the battery pack from the rear of the transceiver. If you are not using a speaker/ microphone, install the cover over the speaker/ microphone jacks using the supplied screw .
Note: To lift the cover after it has been installed, use a piece of hardened plastic or metal, such as a small screw driver. Lift the cover by its tab, beside the screw hole, taking care not to damage the cover.
Installing the (Optional) Speaker/ M icrophone Note: W hen inst alling t he opt ional speaker/ m icrophone and it s locking bracket , you m ust remove the battery pack from the rear of the transceiver. 1
2
Insert the speaker/ m icrophone plugs into the speaker/ microphone jacks. Attach the locking bracket using the supplied screw .
Note: To lift the locking bracket after it has been installed, use a piece of hardened plastic or metal, such as a small screw driver. Lift the bracket by its tab, beside the screw hole, taking care not to damage the bracket.
8
6 7
M icrophone
Speaker
The transceiver is show n w ith the optional KNB-24L battery pack.
q LED indicator Lights red w hile transmitting. Lights green w hile receiving. Flashes orange w hile receiving a 2-Tone, DTM F, or FleetSync signal that m atches the one set up in your transceiver. If programmed by your dealer, flashes red w hen the battery pow er is low w hile transmitting.
w Channel Sw itch Rotate to select a channel from 1 to 16.
e Pow er sw itch/ Volume control Turn clockw ise to sw itch ON the transceiver. Rotate to adjust the volume. To sw itch OFF the transceiver, turn counterclockw ise fully.
r AUX key This is a PF (Programmable Function) key. Press it to activate its auxiliary function (page 4). The default setting for this key is None.
t PTT (Push-to-Talk) sw itch Press this sw itch, then speak into the microphone to call a station.
y Side 1 key This is a PF (Programmable Function) key. Press it to activate its auxiliary function (page 4). The default setting for this key is None.
u Side 2 key This is a PF (Programmable Function) key. Press it to activate its auxiliary function (page 4). The default setting for this key is Squelch Off M omentary. Press each key to activate its auxiliary function.
i SP/ M IC jacks Connect an optional speaker/ microphone here.
3
TK-2160 OPERATING FEATURES / REALIGNM ENT Programmable Auxiliary Functions
3-2. Connection procedure
The AUX , Side 1, and Side 2 keys can be programmed w ith the auxiliary functions listed below : • 2-Tone Encode • Emergency ∗1 • M onitor M omentary • M onitor Toggle • None • RF Pow er Low • Scan • Scan Temporary Delete • Scrambler • Squelch Off M omentary • Squelch Off Toggle
1. Connect the TK-2160 to the personal computer w ith the interface cable. 2. W hen the POW ER is sw itched on, user m ode can be entered immediately. When the PC sends a command, the radio enters PC mode. When data is transmitting from the transceiver, the red LED lights. When data is received by the transceiver, the green LED lights.
∗1
This function can be programmed only on the AUX key.
3-3. KPG-22 description (PC programming interface cable: Option)
REALIGNM ENT
The KPG-22 is required to interface the TK-2160 w ith the computer. It has a circuit in its D-subconnector (25-pin) case that converts the RS-232C logic level to the TTL level. The KPG-22 connects the SP/M IC connector of the TK-2160 to the computer’s RS-232C serial port.
1. M odes User mode PC mode
Data programming mode PC test mode
M ode User mode PC mode Data programming mode PC test mode
Notes: • The data stored in the personal computer must match the model type w hen it is w ritten into the EEPROM . • Change the TK-2160 to PC mode, then attach the interface cable.
3-4. Programming softw are description PC tuning mode
Function For normal use. Used for communication betw een the radio and PC (IBM compatible). Used to read and w rite frequency data and other features to and from the radio. Used to check the radio using the PC. This feature is included in the KPG82D.
KPG-82D is t he program m ing sof t w are f or TK-2160 supplied on a CD-ROM . This softw are runs under Window s 98, M E, Window s 2000 or XP on an IBM -PC or compatible machine. The data can be input to or read from TK-2160 and edited on the screen. The programmed or edited data can be printed out. It is also possible to tune the transceiver.
IBM-PC
KPG-22
2. How to Enter Each M ode M ode User mode PC mode
Operation Pow er ON Received commands from PC
3.PC M ode
Gray Gray/Black 1.5D-XV Lead wire 1.5D-XV Shield wire
KPG-82D RF Power meter or SSG
Tuning cable (E30-3216-05)
3-1. Preface The TK-2160 transceiver is programmed using a personal computer, a programming interface (KPG-22) and programming softw are (KPG-82D). The programming softw are can be used w ith an IBM PC or compatible. Figure 1 show s the setup of an IBM PC for programming.
4
Fig. 1
+ – + –
} SP } MIC
TK-2160 DISASSEM BLY FOR REPAIR 1. Separating the case assembly from the chassis.
3. How to remove the battery terminal block.
1. Remove the volume knob z. 2. Remove the tw o screw s x. 3. Lift the chassis c, and remove it from the case assembly. Note: After separating the case assembly from the chassis, remove the channel knob.
1. Remove the two screws /, then pull out the back cover Ω. 2. Remove the screw ≈.
≈ /
z
x
/ Ω
x
,
c
Packing
Channel knob
2. Separating the chassis from the TX/ RX unit. 1. Remove the tw o screw s v fixing the TX/RX unit B/2. 2. Remove the tw elve screw s b and tw o screw s n fixing the TX/RX unit A/2. 3. Remove the solder from the antenna terminal using a soldering iron m, then lift the unit off.
b
TX/RX UNIT A/2
m
b
b b b
b
b .
n
v
v TX/RX UNIT B/2
, ≈ Note: To remove the TX/RX unit B/2, remove the solder using a soldering iron .. Note: The tw o screw s n of TX/RX unit A/2 are fixing the battery terminal block ,.
5
TK-2160 DISASSEM BLY FOR REPAIR • Installation of chassis and cabinet assy
Assembling • Installation of battery terminal block and packing
Do not press this area, top packing easily deform .
Install them so that no distortion or deformation occurs.
• Installation of speakers and cushion, and wire styling of speakers
First, m ount the set to the cabinet assy.
Second, press dow n the Chassis to the cabinet assy as show n in the diagram . Wire Styling
Install the cushion acco r d i n g t o t h e guide.
Good Condition
NG Condition
Install the speakers so that they do not protrude from the cushion. Perform the w ire styling of speakers as show n in a photograph.
• Attaching the cushion Attach the cushion as show n in Fig. 1.
After m ount, packing sh o u l d b e i n t h i s condition.
Packing protruded out.
G13-2017-04
Take scr ew B an d MIC edge as reference line w hen sticking.
C
G13-2020-04 A
B
G13-2018-04 Stick betw een screw A and B.
Fig. 1 Note: Cushion must not cover the screw s A,B and C.
6
Packing deform .
Note: • Take care that the packing does not protrude from the chassis or case. • Replace the protruded or deformed packing w ith a new one.
TK-2160 CIRCUIT DESCRIPTION 3) IF Amplifier Circuit
1. Frequency Configuration The receiver utilizes double conversion. The first IF is 49.95 M Hz and the second IF is 450 kHz. The first local oscillator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the necessary frequencies. Fig. 1 show s the frequencies. ANT TX/RX: 136 ~ 174M Hz (K,M )
CF 450kHz SP M CF
RF AM P
ANT SW
AF AM P
IF SYSTEM 49.95M Hz 50.4M Hz X3 m ultiply TCXO
16.8M Hz
RX: 185.95 ~ 233.95M Hz (K,M )
TX: 136 ~ 174M Hz (K,M )
RF AM P
TX AM P
M IC PLL VCO
M IC AM P
The first IF signal is passed through a four-pole monolithic crystal filter (XF401) to remove the adjacent channel signal. The filtered first IF signal is amplified by the first IF amplifier (Q402) and then applied to the lF system IC (IC401). The IF syst em IC provides a second m ixer, second local oscillator, limiting amplifier, quadrature detector and RSSI (Received Signal Strength Indicator). The second mixer mixes the first IF signal w ith the 50.4M Hz of the second local oscillator output (TCXO X1) and produces the second IF signal of 450kHz. The second IF signal is passed through the ceramic filter (CF401) to remove the adjacent channel signal. The filtered second IF signal is amplified by the limiting amplifier and demodulated by the quadrature detector w ith the ceramic discriminator (CD401). The demodulated signal is routed to the audio circuit.
Fig. 1 Frequency configuration 4) Wide/ Narrow Sw itching Circuit
2. Receiver The frequency configuration of the receiver is shown in Fig. 2. ANT
RF AM P Q404
BPF
BPF
M IXER Q403
TUNE
1st Local
M CF XF401
IF AM P Q402
ANT SW TUNE
Narrow and Wide settings can be made for each channel by sw itching the demodulation level. The WIDE (high level) and NARROW (low level) data is output from IC805, pin 54. When a WIDE (high level) data is received, Q401 turn off. When a NARROW (low level) data is received, Q401 turn on. Q401 turns on/off w ith the W ide/Narrow data and the IC401 detector output level is sw itched to m aintain a constant output level during w ide or narrow signals.
CF401 IC602 AF Am p
IC601 AF VOL
IC401 IF,M IX,DET
IC605 AF PA
Q402
SP
AQUA
AFOUT
IC401 FM IF SYSTEM
X1 Q4 X3 m ultiply
TCXO
16.8M Hz
2nd Local
QUAD
IFO
Fig. 2 Receiver section C409 R408
1) Front End (RF AM P) The signal coming from the antenna passes through the transmit/receive sw itching diode circuit, (D204,D206,D208 and D212) passes through a BPF (L411 and L412), and is amplified by the RF amplifier (Q404). The resulting signal passes through a BPF (L407 and L409) and goes to the mixer. These BPFs are adjusted by variable capacitors (D402,D403,D404 and D405). The input voltage to the variable capacitor is regulated by voltage output from the microprocessor (IC805).
2) First M ixer The signal from the front end is mixed w ith the first local oscillator signal generated in the PLL circuit by Q403 to produce a first IF frequency of 49.95 M Hz. The resulting signal passes through the XF401 M CF to cut t he adjacent spurious and provide t he opit im un characteristics, such as adjacent frequency selectivity.
Q401 W/N
R409
CD401
H : Wide L : Narrow
5R
Fig. 3 Wide/ Narrow sw itching circuit 5) Audio Amplifier Circuit The demodulated signal from IC401 is amplified by IC602, and goes to AF amplifier through IC601. The signal t hen goes t hrough an AF volum e cont rol (VR801), and is routed to an audio pow er amplifier (IC605) w here it is amplified and output to the speaker.
7
TK-2160 CIRCUIT DESCRIPTION 6) Tone Volume Fixed Circuit This function generates a TONE signal sound even if the AF volume of the transceiver is the minimum. A TONE signal is sent through Q602 to the AF amplifier w hen, in the FPU, “ TONE Volume Fixed” is set to ON.
(3) M SK (Fleet Sync) Fleet Sync utilizes 1200bps and 2400bps M SK signal is output from pin 6 of IC601. And is routed to the VCO. When encoding M SK, the microphone input signal is muted. RECEIVE SIGNALING
IC601 AQUA
IC601
FM IF IC401
VOL
IC602 IF Am p
IF Am p
SIGNAL DTM F
IC605 TA7368F
IC805 BEEP CPU
AQUA
QT/DQT
TONE VOL FIXED Q602 BEEPSW
Hi: ON LOW: OFF
IC605 AF PA
IC805 LSDI
AN SQL
+ SP-J
HSDI SP M UTE
SP
CLK,DATA, STD,LOADN IC603 BPF & COMPALATER
CPU
Q608 SW
Q603,604,607 SW
2-TONE
SP
Fig. 5 AF amplifier and squelch Output Level (m V)
[VOL Position vs Output Level]
(4) DTM F The DTM F input signal from the IF IC (IC401) is amplified by IC602 and goes to IC601. The decoded information is then processed by the CPU.
500
ON 25 M in
OFF Center
M ax
Fig. 4 Tone volume fixed circuit
3. PLL Frequency Synthesizer The PLL circuit generates the first local oscillator signal for reception and the RF signal for transmission.
7) Squelch Part of the AF signal from the IC enters the FM IC (IC401) again, and the noise component is amplified and rectified by a f ilt er and an am plif ier t o produce a DC volt age corresponding to the noise level. The DC signal from the FM IC goes to the analog port of the microprocessor (IC805). IC805 determines w hether to output sounds from the speaker by checking w hether the input voltage is higher or low er than the preset value. To output sounds from the speaker, IC805 sends a high signal to the SP M UTE line and turns IC605 on through Q603,Q604,Q607 and Q608. (See Fig. 5)
8) Receive Signalling (1) QT/DQT Th e o u t p u t s ig n al f ro m IF IC(IC4 0 1 ) e n t e rs t h e microprocessor(IC805) through IC601. IC805 determines w hether the QT or DQT matches the preset value, and controls the SP M UTE and the speaker output sounds according to the squelch results. (2) 2-TONE Part of the received AF signal output from the AF amplifier IC602, and t hen passes t hrough an audio processor (IC601), goes to the other AF amplifier IC603, is compared, and then goes to IC805. IC805 checks w hether 2-TONE dat a is necessary. If it m at ches, IC805 carries out a specified operation, such as turning the speaker on. (See Fig. 5)
8
1) PLL The frequency step of the PLL circuit is K:2.5,5,6.25 or 7.5kHz, M :6 or 6.25kHz. A 16.8M Hz reference oscillator signal is divided at IC1 by a fixed counter to produce an oscillator (VCO) output signal w hich is buffer amplified by Q9 then divided in IC1 by a dual-module programmable counter. The divided signal is compared in phase w ith the 5 or 6.25kHz reference signal from the phase comparator in IC1. The output signal from the phase comparator is filtered through a low -pass filter and passed to the VCO to control the oscillator frequency. (See Fig. 6)
2) VCO The operating frequency is generated by Q6 in transmit mode and Q5 in receive mode. The oscillator frequency is controlled by applying the VCO control voltage, obtained f rom t he phase com parat or, t o t he varact or diodes (D3,D5,D7 and D8 in transmit mode and D4,D6,D9 and D10 in receive mode). The RX pin is set high in receive mode causing Q8 and Q12 to turn Q6 off and Q5 on. The TX pin is set high in transmit mode. The outputs from Q5 and Q6 are amplified by Q9 and sent to the RF amplifiers.
TK-2160 CIRCUIT DESCRIPTION IC601 Q6 TX VCO
D3, 5, 7, 8 LPF
Q7 DOUBLER
AGC M IC AQUA
LPF
IC606 BUFFER
Q5 RX VCO
D4, 6, 9, 10
VCO
Q11 RF AMP
Q9 BUFF AMP
LPF
Q8, 12 T/R SW
IC805 RX
DTM F/2 TONE
TX
LSDVCO
LPF
LSDTCXO
LPF
X1
PLL IC IC1
CPU
TCXO
5kHz/6.25kHz 1N
Fig. 8 M icrophone amplifier PLL DATA
PHASE COMPARATOR
CHARGE PUMP
2) Drive and Final Amplifier
REF OSC
The signal from the T/R sw itch (D201 is on) is amplified by the drive amplifier (Q207) to 50mW. The output of the drive amplifier is amplified by the RF pow er amplifier (Q211) to 5.0W (1W w hen the pow er is low ). The RF pow er amplifier consists of tw o M OS FET stages. The output of the RF pow er amplifier is then passed through the harmonic filter (LPF) and antenna sw itch (D204 and D206) and applied to the antenna terminal.
1M 5kHz/6.25kHz
X1 16.8MHz
Fig. 6 PLL circuit 3) Unlock Detector If a pulse signal appears at the LD pin of IC1, an unlock condition occurs, and the DC voltage obtained from C19,R6 and Q1 causes the voltage applied to the microprocessor to go high. When the microprocessor detects this condition, the transmitter is disabled, ignoring the push-to-talk sw itch input signal. (See Fig. 7)
From T/R SW (D201)
Q206 Pre-DRIVE AM P
Q207 DRIVE AM P
VG
VG
ANT
D204 D206
Q211 RF POWER AM P
ANT SW
LPF
VG VDD
+B R264
5C
R265 R270 IC201 (1/2) IC805
R6 R7 Q1
IC1
UL
R16
PCTV (IC805)
Fig. 9 Drive and final amplifier and APC circuit
CPU
LD PLL IC
IC201 (2/2)
C19
Fig. 7 Unlock detector circuit
4. Transmitter System 1) M icrophone Amplifier The signal from the microphone passes through the IC601. When encoding DTM F, it is turned OFF for muting the microphone input signal by IC601. The signal passes through the Audio processor (IC601) for the maximum deviation adjustment, and goes to the VCXO modulation input.
3) APC Circuit The APC circuit alw ays monitors the current flow ing through the RF pow er amplifier (Q211) and keeps a constant current. The voltage drop at R264, R265 and R270 is caused by the current flow ing through the RF pow er amplifier and this voltage is applied to the differential amplifier IC201(1/2). IC201(2/2) compares the output voltage of IC201(1/2) w ith the reference voltage from IC805. The output of IC201(2/2) controls the VG of the RF pow er amplifier, drive amplifier and pre-drive amplifier to make both voltages the same. The change of pow er high/low is carried out by the change of the reference voltage.
4) Encode Signalling (1) QT/DQT QT,DQT data of the LSDTCXO Line is output from pin 22 of the CPU. The signal passes through a low -pass CR filter and goes to the TCXO(X1). The QT,DQT data of the LSDVCO Line is output from pin
9
TK-2160 CIRCUIT DESCRIPTION 20 of the CPU. The signal passes through a low pass CR filter, mixes w ith the audio signal, and goes to the VCO modulation input. TX deviation is adjusted by the CPU.
C834
X801 XOUT IC805
(2) DTM F/2 TONE High-speed data is output from pin 2 of the CPU. The signal passes through a low -pass CR filter, and provides a TX and SP out tone, and is then applied to the audio processor (IC601). The signal is mixed w ith the audio signal and goes to the VCO. TX deviation is adjusted by the CPU. (3) M SK (Fleet Sync) The M SK input signal from the IF IC is amplified by IC602 (1/2) and goes to pin 31 of IC 601. The signal is demodulated by M SK demodulator in IC 601. The demodulated data goes to the CPU for processing.
Q810 Hi: OFF LOW: ON
Fig. 10 Frequency shift circuit 2) M emory Circuit M emory circuit consists of the CPU (IC805) and an EEPROM (IC804). An EEPROM has a capacity of 64k bits that contains the transceiver control program for the CPU and data such as transceiver channels and operating features.
5. Pow er Supply There are 3.5V pow er supply for PLL circuit and five 5V pow er supplies for the microprocessor: 5M ,5M S,5C,5R, and 5T. 5M is alw ays output w hile the pow er is on. 5M is alw ays output, but turns off w hen the pow er is turned off to prevent malfunction of the microprocessor. 5C is a common 5V and is output w hen SAVE is not set to OFF. 5R is 5V for reception and output during reception. 5T is 5V for transmission and output during transmission.
6. Control Circuit The control circuit consists of a microprocessor (IC805) and its peripheral circuits. It controls the TX-RX unit. IC805 mainly performs the follow ing: (1) Sw itching betw een transmission and reception by the PTT signal input. (2) Reading system, group, frequency, and program data from the memory circuit. (3) Sending frequency program data to the PLL. (4) Controlling squelch on/off by the DC voltage from the squelch circuit. (5) Controlling the audio mute circuit by the decode data input. (6) Transmitting tone and encode data.
1) Frequency Shift Circuit The m icroprocessor (IC805) operat es at a clock of 7.3728M Hz. This oscillator has a circuit that shifts the frequency by BEAT SHIFT SW (Q810). A beat sound may be able to be evaded from generation if “ Beat Shift” is set to ON w hen it is generated in the internal spurious transmission modulated sound of a transceiver.
BSHIFT
IC805
IC804
CPU
EEPROM
Fig. 11 M emory circuit 3) Low Battery Warning The battery voltage is checked using by the microprocessor. The transceiver generates a w arning tone w hen it falls below the w arning voltage show n in the table. (1) The red LED blinks w hen the battery voltage falls below the voltage (1) show n in the table during transmission. (2) The red LED blinks w hen the battery voltage falls below the voltage (2) show n in the table during transmission. Note: The transceiver checks the battery voltage during reception even w hen, in the FPU, the Battery Warning status function is set to “ On TX” (default setting). How ever, the LED does not blink during reception. During transmission, the LED blinks to generate the w arning tone of a low battery voltage. (3) The transceiver immediately stops transmission w hen the battery voltage falls below the voltage (3) show n in the table. A message tone beeps w hile the PTT sw itch is released. Battery Case
Li-ion Battery Ni-Cd Battery Ni-M H Battery
(1)
6.2[V]
6.5[V]
6.2[V]
6.2[V]
(2)
7.6[V]
7.1[V]
6.8[V]
7.0[V]
(3)
5.9[V]
6.2[V]
5.9[V]
5.9[V]
SB
IC805
R833 88
CPU R834
Fig. 12 Low battery w arning 10
TK-2160 CIRCUIT DESCRIPTION / INSTALLATION INSTALLATION
4) Battery Type Detection The transceiver automatically detects the battery type, measuring the resistance betw een the S-terminal and + terminal on the battery pack and changes the supplied voltage to the S-tarminal as below . The microprocessor then detects the battery type.
1. Optional Board Remove the TX/RX unit from the radio before installing the optional board in the radio.
Resistor value
Battery type
Input voltage of S-terminal
1.8M Ω
Li-ion
0.3~1.3V
the DISASSEM BLY FOR REPAIR section in the Service
560kΩ
Ni-Cd
1.3~2.6V
M anual.
220kΩ
Ni-M H
2.6~5.0V
OPEN
Battery case
0~0.3V
The procedure for removing the TX/RX unit is described in
Install the optional board on the back of the TX/RX unit. For details on installation of the optional board, refer to Installation Information supplied w ith the optional board. When installing the optional board, also refer to the chart in
7. Control System
TERM INAL FUNCTION section (page 12) given in the Service
Keys and channel selector circuit. The signal from the keys and channel selector are directly input to the microprocessor, as show n in fig. 13.
Note: To install and use the Scrambler Board, remove “ R601” and “ R647” from the front of the TX/RX unit.
M anual.
Channel selector
R647
C627
R618
R622
C628
R623
R616 L806
C847
C613
+
R625 C846
CP810 75 76
4
R836
+ C610
L804
VCC
51 50
R855
R695
R624
10
CP813
CE
R856
CP809
9 R621
+ C630
+
CP812
C636
R627
R835
32 1
C622
R631
CP803
C640
C642
C634
R632 R601
R629
CP808
C641
R642 R641
R647
17 16
R839
C4
R840
C608 R608
C635 25 26 IC601
R643 C646
R634
R2 R3
C1
R1
C3
Fig. 13 Control system
R610
C606
C625
C632
C621
C648
R615
R640
R626 C631
C643
C618
SW2
C619
R617
76
R609 R613
C614
C633
SW1
R633
R607 C645
C609
C607
R628
AUX SW
SIDE 1 75
SIDE 2
R601
74
R696
IC805 CPU
PTT SW
C637
AUXSW 70 EN1 69 EN2 68 EN3 67 EN4
34
R636
PTT
CP814
TX-RX UNIT (X57-6720-10) Component side view
11
TK-2160 TERM INAL FUNCTION ■ CN801 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
GND SB A3 TXAFI A2 A6 A1 A5 A4 NC 5C DEO TXAFI DEO NC
GND Sw itched B AUX3 Transmit AF input AUX2 AUX6 AUX1 AUX5 AUX4 Non connection DC 5V Discriminator signal output Transmit AF input Discriminator signal output Non connection
16
ALT
Sidetone input
17 18 19 20
NC NC NC GND
Non connection Non connection Non connection GND
Designation
Function
Condition Output Voltage/7mA load Load >100kΩ Input sensitivity/Impedance (1kHz std. dev.) Load >100kΩ Load >100kΩ Load >100kΩ Load >100kΩ Load >100kΩ Output Voltage/10mA load Output voltage/Impedance (1kHz std. mod.) Input sensitivity/Impedance (1kHz std. dev.) Output voltage/Impedance (1kHz std. mod.) Input sensitivity/Impedance (1kHz rated AF pow er/Vol. M AX)
Value Vss DC (Battery terminal) ±0.5V (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ 280±50mVrms @22kΩ Load (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ Non connection 5.0±0.5V 280±50mVrms @2.2kΩ Load 280±50mVrms @22kΩ Load 280±50mVrms @2.2kΩ Load Non connection
Vdd Vdd Vdd Vdd Vdd Vdd
7 ±3mVrms @22kΩ Load Non connection Non connection Non connection Vss
■ Solder point connection Designation Function M IC_I M ic input M IC_O RA_I RA_O A1 A2 A3 A4 A5 A6 SB GND 5C TXAFI DEO LSDFO ALT
12
Condition Input sensitivity/Impedance (1kHz std. dev.) Output voltage/Impedance (1kHz 15mVrms mic input) Output voltage/Impedance (1kHz 100mVrms mic input) Input sensitivity/Impedance (1kHz rated AF pow er/Vol. M AX) Output voltage/Impedance (1kHz std. mod.) Output voltage/Impedance (1kHz system mod.) Load >100kΩ Load >100kΩ Load >100kΩ Load >100kΩ Load >100kΩ Load >100kΩ Output Voltage/7mA load
Value 7±3mVrms @22kΩ Load 2.6±1.0mVrms @2.2kΩ Load M ic o utput 90±20mVrms @100kΩ Load Receiver AF input 75±20mVrms @22kΩ Load 150±50mVrms @2.2kΩ Load Receiver AF output 290±50mVrms @100kΩ Load AUX1 (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ AUX2 (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ AUX3 (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ AUX4 (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ AUX5 (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ AUX6 (Low ) Vss ~ 0.4V (High) Vdd-0.8V ~ Sw itched B DC (Battery terminal) ±0.5V GND Vss DC 5V Output Voltage/10mA load 5.0±0.5V Transmit AF input Input sensitivity/Impedance (1kHz std. dev.) 280±50mVrms @22kΩ Load Discriminator signal output Output voltage/Impedance (1kHz std. mod.) 280±50mVrms @2.2kΩ Load Received sub-tone output Output voltage/Impedance (150Hz 15% mod.) 180±50mVrms @2.2kΩ Load Sidetone input Input sensitivity/Impedance (1kHz rated AF pow er/Vol. M AX) 7±3mVrms @22kΩ Load
Vdd Vdd Vdd Vdd Vdd Vdd
TK-2160 SEM ICONDUCTOR DATA M icroprocessor : M 30622M CA7G7GP (TX-RX UNIT : IC805) ■ Pin function Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
Port Name PCTV DTM F HSDI EEPDAT EEPCLK BYTE CNVSS AUX5 AUX6 RESET XOUT VSS XIN VCC NC INT RDF/FD TCLK/ DTRDI NC LSDVCO NC LSDTCXO NC BEEP OPTDET NC NC NC AUX4 AUX2 NC NC TXD PTT/RXD STD BBDIR BBCLK BBDI/O NC TDATA/ DTRCLK DTRLOADN AUX3 AUX1 NC NC DSW BEEPSW AFCOUT AFM UTE NC TX RX
I/O
Function
O O I I/O O I I O O I O I I I I
APC/BPF control data output. DTM F, 2TONE. High speed data input (2TONE). EEPROM data input/output. EEPROM Clock GND. GND. Option Board 5 Option Board 6 CPU reset. CPU clock. GND. CPU clock. +5V. NC Battery voltage monitor input Low battery : L Base Band IC Data input
I
Base Band IC Data input
O I O I O I O I/O I/O I I O O I/O -
NC Low speed data output (VCO). NC Low speed data output (TCXO). NC Beep output. Option detect input NC NC NC Option board port 4 Option board port 2 NC NC Serial data. PTT on : L/Serial data. Base Band IC Data input Base Band IC Data output Base Band IC clock output Base Band IC Data input/output NC
O
Base Band IC Data output
O O O O O O O O O
Base Band IC Data output Option board port 3 Option board port 1 NC NC APC voltage discharge Sw itch Beep sw itch. AF amp pow er supply control RX audio mute NC TX VCO pow er supply sw itch RX VCO pow er supply sw itch
Pin No. 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
Port I/O Name BSHIFT O W/N O NC APCSW O SAVE O 5TC O 5RC O VCC 5M SC O VSS NC NC NC NC EN4 I EN3 I EN2 I EN1 I NC LEDTX O LEDRX O AUXSW I SIDE1 I SIDE2 I NC NC SIM 1 I SIM 2 I NC PLLUL I RFCLK O RFDAT O PS O PLLSTB O BATTSEL I BATT I VOX I RSSQL I ANSQL I LSDI I THM I AVSS NC VREF AVCC NC NC NC -
Function Beet shift sw itch. W/N sw itch Wide:H NC APC sw itch output. Battery save output. 5T control output. 5R control output. +5V. 5M control output. GND. NC NC NC NC CH selector input 4. CH selector input 3. CH selector input 2. CH selector input 1. NC RED LED lights control output GREEN LED lights control output Key input (Emergency). Side key 1 input. Side key 2 input. NC NC Destination select 1. Destination select 2. NC PLL unlock detect input. unlock : L PLL clock output. Latch : L PLL data output. PLL pow er save output. PLL strobe output. Battery distinction input. Battery voltage input. VOX input. Received signal strength indicator input. Squelch level input. Low speed data input (QT/DQT). Thermistor input. GND. NC +5V. +5V. NC NC NC
TX:L RX:L
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TK-2160 COM PONENTS DESCRIPTION TX-RX UNIT (X57-672X-XX) Ref. No. IC1 IC201 IC401 IC601 IC602 IC603(1/2) IC603(2/2) IC604 IC605 IC606 IC801 IC802 IC803 IC804 IC805 IC806 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q206
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Use/Function IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC Transistor Transistor Transistor Transistor FET FET Transistor FET Transistor Transistor Transistor FET FET
Operation/Condition PLL system Comparator (APC) FM IF system Audio processor AF AM P HSD AM P HSD AM P VOX AM P AF Pow er AM P AF AM P Voltage regulator / 5V Voltage detector / Reset Voltage detector / INT EEPROM M icroprocessor Flip Flop Level shift Level shift Level shift Tripler VCO / RX VCO / TX Doubler DC sw itch / TX VCO RF Buffer AM P Ripple filter RF AM P DC sw itch / RX VCO
Ref. No. Q804 Q805(1/2) Q805(2/2) Q806 Q807 Q808 Q809 Q810 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12
Use/Function Transistor Transistor Transistor Transistor Transistor Transistor Transistor FET diode Variable capacitance diode Variable capacitance diode Variable capacitance diode Variable capacitance diode Variable capacitance diode Variable capacitance diode Variable capacitance diode Variable capacitance diode Diode Variable capacitance diode
Operation/Condition 5C sw itch LED sw itch / Green LED sw itch / Red AVR / PLLB PLLB sw itch 5M S sw itch 5R sw itch Beet shift sw itch Shift sw itch Frequency control / TX VCO Frequency control / RX VCO Frequency control / TX VCO Frequency control / RX VCO Frequency control / TX VCO Frequency control / TX VCO Frequency control / RX VCO Frequency control / RX VCO Shift sw itch M odulator
Pre-drive AM P
D13
Diode
Current steering
TX Drive AM P
D14
Diode
Shift sw itch
Transistor
APC sw itch
D201
Diode
TX/RX RF sw itch
FET
APC sw itch
D203
Zener diode
APC protect
Transistor
APC sw itch
D204
Diode
ANT sw itch
FET
TX Final AM P
D206
Diode
ANT sw itch
Q212
FET
APC sw itch
D208
Diode
ANT sw itch
Q213
Transistor
APC sw itch
D212
Diode
ANT sw itch
Q400
FET
W/N sw itch / TX
D401
Diode
TX/RX RF sw itch
Q207
FET
Q208 Q209 Q210 Q211
Variable
Q401
Transistor
W/N sw itch / RX
Q402
Transistor
IF AM P
Q403
FET
M ixer
Q404
FET
RF AM P
Q601
FET
AF M ute
Q602
FET
Beep sw itch
Q603
Transistor
DC sw itch / SP M ute
Q604
Transistor
DC sw itch
Q605
Transistor
M IC AGC
D603
Diode
Limitter
Q606
Transistor
M IC AGC
D604
Diode
Detector
Q607
Transistor
DC sw itch / SP M ute
D605
Diode
Detector
Q608
FET
SP M ute sw itch
D606
Diode
Detector
Q801
Transistor
5T sw itch
D801
Diode
5M protector
Q802(1/2) FET
5TC sw itch
D802
LED
LED / Red
Q802(2/2) FET
SAVE sw itch
D803
LED
LED / Green
Q803(1/2) Transistor
AVR / 5C
D805
Diode
Reverse protection
Q803(2/2) Transistor
AVR / 5T
D402 D403 D404 D405
capacitance diode Variable capacitance diode Variable capacitance diode Variable capacitance diode
RF BPF tuning RF BPF tuning RF BPF tuning RF BPF tuning
TK-2160 PARTS LIST CAPACITORS
CC 45 TH 1H 220 J 1 2 3 4 5 6
Capacitor value
Color*
CC45
010 = 1pF
2
1 = Type ... ceramic, electrolytic, etc. 2 = Shape ... round, square, ect.
4 = Voltage rating
100 = 10pF
5 = Value
101 = 100pF
3 = Temp. coefficient
6 = Tolerance
102 = 1000pF = 0.001µF
2
0 = 22pF Multiplier 2nd number 1st number
103 = 0.01µF Temperature coefficient
1st Word Color* ppm/
C
L
Black 0
Red -80
P
R
S
Orange Yellow Green -150 -220 -330
T
U
Blue -470
Violet -750
2nd Word
G 30
ppm/
H 60
(%)
C
D 0.5
0.25
G 2
J 5
K 250
L 500
60ppm/
Example : CC45TH = -470
Tolerance (More than 10pF)
Code
J 120
(Less than 10pF)
K 10
M 20
X + 40 - 40
Z
P
No code
+ 80 + 100 More than 10µF -10 - 20 -0 Less than 4.7µF -10
+50
B 0.1
Gode (pF)
C 0.25
D 0.5
F 1
G 2
+75
Voltage rating
2nd word 1st word
A
B
C
D
E
F
G
H
J
K
0
1.0
1.25
1.6
2.0
2.5
3.15
4.0
5.0
6.3
8.0
1 2
10 100
12.5 16 125 160 1000 1250 1600
3
C C 7 3 1
(EX)
2
40 50 63 80 25 31.5 250 315 400 500 630 800 2000 2500 3150 4000 5000 6300 8000
3
S L 1 H 0 0 0 4
5
6
J 7
Refer to the table above. 1 = Type 2 = Shape
C K 7 3
3 = Dimension 4 = Temp. coefficient
2
35 -
Dimension (Chip capacitors)
F
(Chip)(CH,RH
