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SERVICE
MANUAL
MULTI CHANNEL AM/FM TRANSCEIVER
TCB-660
TTI Tech Co.,Ltd.
TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 CIRCUIT DESCRIPTION
1 GENERAL
2 TECHNICAL DESCRIPTION
3 SEMICONDUCTORS AND FUNCTION
4 DESCRIPTION OF FREQUENCY DETERMINING AND STABILIZING CIRCUIT
5 TEST EQUIPMENT SETUP AND ALIGNMENT INSTRUCTIONS
SECTION
SECTION
SECTION 5 BOARD LAYOUT
SECTION 6 BLOCK DIAGRAM
SECTION 7 SCHEMATIC
3 PART LIST
4 MECHANICAL DISASSEMBLY
5-1 MAIN PCB
5-2 FRONT PCB
5-3 VOLUME PCB
SECTION1 SPECIFICATIONS
Channel
Frequency Range
Operating mode
G
Frequency Control
E
Frequency Tolerance
N
E
Operating Temperature Range
R
Microphone
A
Input Voltage
L
Size
Weight
Antenna Connector
T
Power Output
R
Modulation
A
N
S
M
Frequency Response
I
Output Impedance
T
T
Harmonic Suppression
E
Current Drain
R
40 (See the frequency band chart)
26.96 MHz ~ 27.99125 MHz
F3E (FM), A3E (AM)
PLL Synthersizer
0.002%
-10 to + 55 C
Plug-in Type
13.2V DC ± 15%
140 (W) x 186 (L) x 37 (H)
990 g
Antenna Connector
Duty cycle 10% 4 Watts @13.2V DC
AM:from 85% to 95%
FM:1.8KHz ± 0.2KHz
300Hz to 3000Hz
50ohms, Unbalanced
More than -36dBm
AM Full Mod. 1.6A Max.
Receiving System
IF Frequencies
Sensitivity
R
Dual conversion superheterodyne
Double Conversion 1st 10.695MHz/2nd 455KHz
0.7 V for 10dB(S+N)/N
in AM Mode
0.5 V for 20dB SINAD in FM Mode
E
Audio Output Power
C
Audio Distortion
E
I
Image Rejection
V
Adjacent Channel Rejection
2.0W @ 8 Ohm
Less then 8% @ 1KHz
60 dB
60 dB
E
Conducted Spurious
R
Frequency Response
Built-in Speaker
Squelch
More than 60 dB
300 to 2500Hz
8 Ohms, round
Adjustable; Threshold less than 1 microvolt
* Specification is subject to change without prior notice.
SECTION2 CIRCUIT DESCRIPTION
------------ Contents -------------
1 General
1-1. Receiver
1.2. Transmitter
2. Technical Description
2-1. General
2-2. Type of emission
2-3. Frequency Table
2-4. RF Power Output
2-5. DC input Voltage and Current with 13.2V DC Input to Power AMP
2-6. Receiver IF and Local Oscillator Frequencies
3. Semiconductors and Function
4. Description of Frequency Determining and Stabilizing Circuit
4-1. Introduction
4-2. Basic Synthesis Scheme
4-3. Descriptions of Each Block
4-3-1. Introduction
4-3-2. Reference Frequency
4-3-3. VCO
4-3-4. Programmable Divider and Its Control
4-3-5 Phase Detector and VCO Control
4-3-6. Transmitter / Receiver Buffer AMP
4-3-7. Transmitter Doublers
4-3-8. Switching of Turning Capacitor in VCO
4-3-9. Receiver Local Oscillator Outputs
4-4. Frequency Stability
4-5. Description of other Circuits
4-5-1. Transmitter
4-5-2. Receiver
5. Test Equipment Setup and Alignment Instructions
5-1. General Section
5-2. Transmitter Section
5-3. Receiver Section
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TCB-660 Circuit Description Page 2
1. General
1-1. Receiver
① Display : 40 Channels and other functions indication
② Frequency Range : 26.965 to 27.405 [MHz]
③ Frequency Response : 300 to 2,500 [Hz]
④ Power Source : 13.2 [V] DC
⑤ Audio Output Load : 8 [OHM]
⑥ Audio Output : 4.0 [W] (or More)
⑦ Squelch : Adjustable from 0.2[uV] to 100 [uV]
⑧ Sensitivity :
- FM : 20 dB [SINAD] under 1.0 [uV] RF Signal or less
- AM :10 dB [S/N] under 1.0 [uV] RF Signal or less
⑨ Intermediate Frequency :
- 1st IF : 10.695 [MHz]
- 2nd IF : 455 [KHz]
1-2. Transmitter
① Carrier Power(Conducted)
② Current Drain ( 13.2 [V] Supply Voltage)
- No Modulation : 1,
- Max Modulation : 1
③ Modulation Capabilities
- AM : ± 90 [%]
- FM : ± 1.8 [KHz/Dev]
④ Spurious Radiation : Less then 74 [dBc]
⑤ Antenna Impedance : 50 [OHM]
⑥ Frequency Tolerance : 0.002 [%]
: AM 4 [W] / FM 4 [W]
100 [mA]
,600 [mA]
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TCB-660 Circuit Description Page 3
2. Technical Description
2-1. General
2-2. Type of emission : AM(A3E) , FM(F3E)
Model TCB-660 is an mobile type AM/FM radio transceiver for use of the Citizen Radio Service.
z Front Panel Controls
① LCD (C
② Receiver Audio Control (With Power ON/OFF Control) Volume
③ Squelch Control Volume
④ Channel UP/Down Key Switch
⑤
AM/FM Select Key
⑥
Scan Key
z Accessorily Connectors
① Antenna Socket
② External Speaker Jack
③ Microphone(Condenser Microphone)
hannel and RX/TX
).
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TCB-660 Circuit Description Page 4
2-3. Frequency Table
Channel Frequency (MHz) Channel Frequency (MHz)
1 26.965 21 27.215
2 26.975 22 27.225
3 26.985 23 27.235
4 27.005 24 27.245
5 27.015 25 27.255
6 27.025 26 27.265
7 27.035 27 27.275
8 27.055 28 27.285
9 27.065 29 27.295
10 27.075 30 27.305
11 27.085 31 27.315
12 27.105 32 27.325
13 27.115 33 27.335
14 27.125 34 27.345
15 27.135 35 27.355
16 27.155 36 27.365
17 27.165 37 27.375
18 27.175 38 27.385
19 27.185 39 27.395
20 27.205 40 27.405
2-4. RF Power Output
z AM : 4.0 [W]
z FM : 4.0 [W]
2-5. DC Iinput Voltage and Current with 13.2V DC Input to Power AMP
z Transmitter Power Amp : Voltage 12.5 V
z Transmitter Driver Amp : Voltage 12.5 V
2-6. Receiver IF and Local Oscillator Frequencies
z First IF : 10.695 [MHz]
z Second IF : 455 [KHz]
z First Local Oscillator : 10.695 [MHz] Below Receiving Frequency
z Second Local Oscillation : 10.240 [MHz]
Current 820 mA
Current 130 mA
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TCB-660 Circuit Description Page 5
3. Semiconductors and Function
3-1. Transistor
--------------------------------------------------------------------------------------------------------------------------------------------
Ref No. Description Manufacturer Function
--------------------------------------------------------------------------------------------------------------------------------------------
Q101 KTC3880S KEC RX Amplifier
Q102 KTK211 KEC 1’st Mixer
Q103 KTK211 KEC 1’st Mixer
Q104 KRC101S KEC RX Band1 Switching
Q105 KRC101S KEC RX Band2 Switching
Q151 KTC3875S KEC RX FM AF Amplifier
Q152 KRC112S KEC FM AF Mute at AM Mode
Q153 KRC101S KEC FM AF Mute at AM Mode
Q154 KRC112S KEC RX AF Mute at TX Mode
Q161 KTC3880S KEC AM IF Amplifier
Q162 KTC3880S KEC AM IF Amplifier
Q163 KRA102S KEC RX AM B+
Q164 KTA1504S KEC Automatic Noise Level Control
Q181 KTC3875S KEC RX RF Mute at TX Mode
Q182 KTC3875S KEC AGC
Q183 KTC3875S KEC AGC
Q201 KRC101S KEC AF Mute
Q202 KRC202S KEC AF Path
Q233 KTA1504S KEC Automatic Level Control
Q234 KTC3875S KEC Automatic Level Control
Q301 KTC3880S KEC VCO
Q302 KTC3880S KEC RX/TX VCO Buffer
Q303 KTC3880S KEC VCO Buffer
Q305 KRC101S KEC TX VCO Control
Q311 KRC101S KEC RX Band1 Switching
Q312 KRC101S KEC RX Band2 Switching
Q313 KRC101S KEC RX Band3 Switching
Q502 KTC3875S KEC FM TX AF Mute at AM TX
Q701 KTC3880S KEC TX Doublers
Q702 KTC3880S KEC TX Pre-Amplifier
Q703 KTC1006 KEC TX Driver Amplifier
Q704 2SC2078 SANYO TX Power Amplifier
Q742 KTC3875S KEC TX RF Mute at RX Mode
Q801 KRC101S KEC CPU Reset
Q802 KRC101S KEC CPU RX/TX Control
Q803 KRA101S KEC MIC Lock Control
Q911 KTA1658 KEC Main Regulator
Q912 KRA1504S KEC Main Regulator
Q913 KRC112S KEC Main Regulator Control
Q914 KRC102S KEC Power Low Control
Q921 KTC3875S KEC 8.2V Regulator
Q923 KTC3875S KEC RX B+
Q924 KRA1504S KEC TX B+
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TCB-660 Circuit Description Page 6
Q951 KTA1241 KEC Back Light LED Control
Q952 KTA1241 KEC Back Light LED Control
Q953 KRC101S KEC Back Light LED Control
Q954 KRC101S KEC Back Light LED Control
Q961 KRC110S KEC TX AF Mute at RX Mode
Q962 KRC111S KEC MIC AF Path at AM Mode
3-2. IC
--------------------------------------------------------------------------------------------------------------------------------------------
Ref No. Description Manufacturer Function
--------------------------------------------------------------------------------------------------------------------------------------------
IC101 TK144889V TOKO IF IC
IC102 KIA358F KEC AGC, Squelch Control
IC201 TDA2003 ST AF Power Amplifier
IC301 LC7152NM SANYO PLL
IC401 KIA4558F KEC FM TX AF
IC801 JT5BL9 TOSHIBA CPU
IC802 24WC02 ATMEL EEPROM
3-3. Manufacture Information
z KEC ---------------------- KEC Co., LTD.
z SANYO ---------------------- SANYO Semiconductor Co., LTD.
z TOKO ---------------------- TOKO, Inc.
z TOSHIBA ---------------------- Toshiba Semiconductor. Co., LTD.
z ATMEL ---------------------- ATMEL Co., LTD
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TCB-660 Circuit Description Page 7
4. Description of Frequency Determining and Stabilizing Circuit
4-1. Introduction
The Frequencies for transmitter and receiver first local frequencies are all derived from a signal
4.5MHz crystal by means of a phase locked loop(PLL).
The first local oscillator frequencies are 16.270MHz(CH1) to 16.710MHz(CH40). The second local
frequency is fixed at 10.240MHz to generate second IF 455KHz.
Transmit, the VCO of the PLL operates 13.4825MHz(CH1) to 13.7025MHz(40CH). The VCO frequency
goes to the doublers circuit Q701, L701, L702 with doubles the frequency to generate 26.965MHz(CH1)
to 27.405MHz(40CH).
Q302
VCO
13.4825MHz(CH1)
~
13.7025MHz(CH40)
The VCO operating frequency for the receiver is 16.27MHz(CH1) to 16.710MHz(CH40) as the
first local oscillator, injected through the buffer amplifier Q302 into the first FET balanced mixer Q102,
Q103.
4-2. Basic Synthesis Scheme
The crystal frequency(4.5MHz) is divided by 1800 times to make 2.5KHz which is fed to one
side of the phase detector. The VCO output is divided by a programmable divider, and fed to other side of
the phase detector Pin 9, 10 of IC301. Passing the phase detector output closes the feedback loop through
an active low pass filter and using the output to control the VCO frequency through varicap diode D301.
Under locked conditions, both of phase detector input signal must be identical at 2.5KHz.
The VCO frequency is then given by ;
Receiver : Fvco / N = 0.005 [MHz] OR Fvco = 0.005 X N [MHz]
Transmitter : Fvco / N = 0.0025 [MHz] OR Fvco = 0.0025 X N [MHz]
Since “N” is an integer, the VCO frequency can be stepped up with in receiver mode 5KHz and
transmitter mode 2.5KHz increments.
By suitable choice of “N” the desired output frequency can be obtained.
27.405MHz(CH40)
Q701
Doublers
26.965MHz(CH1)
To transmitter
~
Channel 1 Channel 40
N Fvco N Fvco
Transmit 5393 13.4825 5481 13.7025
Receiver 3254 16.2700 3342 16.7100
See the [Table 1]for other Channels
The VCO frequency goes to the doublers circuit, with doubles the incoming signals.
VCO Output Frequency Doublers Output Frequency
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TCB-660 Circuit Description Page 8
Transmit
---
---
---
Transmit
Since all frequencies are obtained from the crystal controlled PLL oscillator, all outputs are
coherent with the crystal oscillator frequency and matching the sample percentage accuracy.
Note that the reference frequency of 5KHz(receiver) and 2.5KHz(transmitter) is obtained by
dividing the 4.5MHz by 900 times and 1800 times
See Table 1 for transmitter/receiver mode VCO frequencies.
CH 1 , 13.4825 MHz
CH 40 , 13.7025 MHz
26.965 MHz
27.405 MHz
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TCB-660 Circuit Description Page 9
Program Data & Frequency[Table 1]
Channel
1 26.965 3254 16.27
2 26.975 3256 16.28
3 26.985 3258 16.29
4 27.005 3262 16.31
5 27.015 3264 16.32
6 27.025 3266 16.33
7 27.035 3268 16.34
8 27.055 3272 16.36
9 27.065 3274 16.37
10 27.075 3276 16.38
11 27.085 3278 16.39
12 27.105 3282 16.41
13 27.115 3284 16.42
14 27.125 3286 16.43
15 27.135 3288 16.44
16 27.155 3292 16.46
17 27.165 3294 16.47
18 27.175 3296 16.48
19 27.185 3298 16.49
20 27.205 3302 16.51
21 27.215 3304 16.52
22 27.225 3306 16.53
23 27.255 3312 16.56
24 27.235 3308 16.54
25 27.245 3310 16.55
26 27.265 3314 16.57
27 27.275 3316 16.58
28 27.285 3318 16.59
29 27.295 3320 16.60
30 27.305 3322 16.61
31 27.315 3324 16.62
32 27.325 3326 16.63
33 27.335 3328 16.64
34 27.345 3330 16.65
35 27.355 3332 16.66
36 27.365 3334 16.67
37 27.375 3336 16.68
38 27.385 3338 16.69
39 27.395 3340 16.70
40 27.405 3342 16.71
Frequency
[MHz]
N Fvco N Fvco
RX TX
5393
5395
5397
5401
5403
5405
5407
5411
5413
5415
5417
5421
5423
5425
5427
5431
5433
5435
5437
5441
5443
5445
5451
5447
5449
5453
5455
5457
5459
5461
5463
5465
5467
5469
5471
5473
5475
5477
5479
5481
13.4825
13.4875
13.4925
13.5025
13.5075
13.5125
13.5175
13.5275
13.5325
13.5375
13.5425
13.5525
13.5575
13.5625
13.5675
13.5775
13.5825
13.5875
13.5925
13.6025
13.6075
13.6125
13.6275
13.6175
13.6225
13.6325
13.6375
13.6425
13.6475
13.6525
13.6575
13.6625
13.6675
13.6725
13.6775
13.6825
13.6875
13.6925
13.6975
13.7025
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TCB-660 Circuit Description Page 10
4-3. Descriptions of Each Block
4-3-1. Introduction
The synthesizer is implemented with the following components;
PLL IC (IC301)
X-TAL (X301)
VCO, VARICAP DIODE (D301)
IC1301 is CMOS LSI that includes most of PLL block.
The Q301, L301, C311, C312, C313, C314, varicap diode D301 are clap oscillator circuit to
operate as a VCO of the IC301. Q305 is a switching transistor to connect or disconnect the tuning
capacitor in the VCO oscillator tank circuit for transmitter or receiver.
Q302 works as a buffer amplifier for RX local frequencies (≒16MHz) and TX carrier
generating frequencies(≒13MHz)
4-3-2. Reference Frequency
The cry stal X301(4.5MHz) and other components at Pin 1 and 24 of IC301 can make a reference
frequency oscillator with internal amplifier.
4-3-3. VCO
Q301 and surrounding parts are consisting a clap oscillator works as a VCO of IC301. With
appropriate control voltage on D301 the VCO can be oscillate over the required range of 13.4825MHz to
16.710MHz.
4-3-4. Programma
The programmable input for each channel are stetted by the PLL Clock(Pin 11), PLL Data(Pin
12), PLL Enable(Pin 13) of IC801. Each input signal to control the PLL ic is done with provide key input
Pin 18, 19, 25, 26, 27, 28, 29, 32, 33, 34, 35, 37. For each key input, an internal code converts EEPROM
appropriate control to the programmable divider for that channel.
Since the change transmit and receive, and additional bit is required at Pin 8 of IC801 to allow
the ROM to recognize the status TX or RX.
During transmit the push to talk switch makes Pin 8 ground with BRT(Q802), PLL IC works
under transmit status.
The programmable divider output fed to the phase detector for compare with the 2,5KHz
reference frequency IC301. See table 1 for actual input and divide ratio on all channels.
4-3-5. Phase Detector and VCO Control
The phase detector is a digital phase comparator witch compares the phase of the reference
signal with programmable divider output square waves and develops a series of pulses whose dc level
depends on the phase error of each signal.
The phase detector pulse output is fed to an active low pass filter and RC low pass filter output
signal of IC301 is filtered and fed to varicap D301 control the VCO frequency.
4-3-6. Transmitter / Receiver Buffer AMP
Output signal of Q301 is fed into the buffer amplifier Q302, L302 to generate TX carrier
frequency and 1’st local frequencies.
ble Divider and Its Control
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TCB-660 Circuit Description Page 11
4-3-7. Transmitter Doublers
The output signal of Q302, L302 goes to an amplifier with tuning circuit Q701, L701, L702
which doubles incoming 13MHz signals.
4-3-8. Switching of Turning Capacitor in VCO
The VCO circuit must tune with a wide range of frequencies 13.4825MHz ~ 13.7025MHz for
transmitter and 16.27MHz ~16.71MHz for receiver.
To comply above range of VCO, the tuning capacitance should switch for transmission. The
tuning circuit consists with L301, C311, C312, C313, and C314. When the VCO is working as a receiver
Q305 becomes turn OFF. So, L301 and C311, D301 makes turning function.
When transmitting, Q305 becomes ON. S the o, L301 an parallel capacitance of C316 and C311
make turning function.
4-3-9. Receiver Local Oscillator Outputs
z FIRST MIXER :
The secondary output signal of L107 is injected to the sources of 1’st mixer Q102, Q103 in the
1’st IF mixer section.
z SECOND MIXER :
The output of 10.24MHz oscillator circuit with X101 is injected into the IF IC(IC101) internally.
Incoming IF signal and 10.24MHz signal are mixed inside the IF IC to extract 2’nd IF signal 455KHz.
FM audio Signals are recovered with the way of quadrature detector.
AM signals are recovered with envelope detector.
4-4. Frequency Stability
Let : Fo = Crystal oscillator frequency
Fr = Phase detector reference frequency
Fvco = VCO frequency
Ft = Transmit frequency
Then : Receiver : Fr = Fo/900
Transmitter : Fr = Fo/1800
And under locked conditions : Fr = Fvco / N
Where, “N” is the programmable divider divide ratio.
Then : Fvco = N X Fr)
From which it can be seen, the percentage error in Ft is the same as the percentage error in Fo.
The stability of the crystal oscillator is determined primarily by the crystal itself and having lesser
deviation by the active and passive components of the oscillator. The choice of crystal and components is
such that the required frequency stability is maintained over the required voltage and temperature range.
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TCB-660 Circuit Description Page 12
4-5. Description of other Circuits
4-5-1. Transmitter
A. RF Amplification
RF carrier frequencies are obtained at the output of doublers amplifier Q701 and turning IFT coil
L701, L702. The input of VCO frequencies 13MHz is selected at the doublers output, which creates the
necessary 27MHz. The output of doublers amplifier Q701 is fed through turning IFT coil L701, L702 to
the base of pre driver amplifier Q702. It’s output; 27MHz is coupled to RF driver amplifier Q703, a lowlevel class C power amplifier. Driver Q703 supplies the necessary power gain to operate RF final Q704 at
the maximum efficient. The output of Q704 is supplied to the antenna through L-C turning circuit.
B. Circuit for Suppression of Spurious Radiation
The turning circuit between the output of final amplifier Q704 and antenna, 4-stage “π”
network C722, C723, C724, L711, C725, C726, L712, C729, C731, L732, C732, C733, C734, L714,
C735 serves as a spurious radiation suppressor. This network also servers to match the impedance
between TX power amplifier Q704 and the antenna.
C. Circuits for Limiting Power
After finished all alignment, the constant voltage supply circuit limits the available power 4W or
slightly less. RV911 and corresponding three-transistor control supply voltage of RF power amplifier.
When power low switch function Q914 changed the supply voltage. Tune all the trimming parts for
maximum indication of RF power meter and adjust RV571 to make 4W indication of RF power meter.
After finishing the above adjustments check the RF power meter reading is changed 1W under “LOW”
state.
The turning is adjustment so that the actual power is from 3.8W to 4.0W. There are no other
additional controls for adjusting the TX output power.
D. Modulation Control
Modulation of the RF is a process that begins with the audio picked up by the microphone.
<FM>
The microphone input is fed to mic audio amplifier IC401 that drives modulation vricap diode
D302 in the VCO circuit RV401 limits the incoming modulation audio levels to inhibit over modulation.
While reading the modulation factor on the modulation analyzing equipment, adjustment RV401 shall not
exceed 2.0KHz deviation.
<AM>
Modulation signals are filtered with RC network and goes to the audio power amplifier IC201 in
to make normal signal level to achieve wanted modulation. IC201 drives T201, which is a combination
AF output/modulation transformer. During transmit, one of the secondary windings of T201 is tied
between the 13.2V DC supply and the collectors of RF driver Q703 and RF power amplifier Q704. As the
audio passes through T201 it causes the collector supplies of Q703 and Q704 to vary with audio,
producing an AM signal at carrier frequency.
To avoid over modulation of the carrier, a protection of the modulating signal is fed back from
the T201 through the AMC circuit, Q233 and Q234, to control the gain of IC201 and sets the maximum
level of modulation. Form the center tab of RV231 and Q233 the feedback signal is rectified by diode
D233, filtered by C233, and supplied the Q234. The collector of Q234 is tied directly TX audio input to
control gain. That is, when the audio output is higher that the preset level of RV231, the information is
reflected through Q233 and Q234, reducing the gain of IC201
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TCB-660 Circuit Description Page 13
4-5-2. Receiver
Overload protection is provided to receiver’s semiconductors by diode D101. These diodes have
a little effect on the incoming signal from another CB station; they protect the receiver from stray
transmitter energy.
In the receiver mode of operation, Q923 transistor is turned on. Also bias voltage is applied to
Q101, Q102, Q103, Q106.
Q101 is a 27MHz RF input amplifier, and any excessive input signal is limited by diode D101.
CB receiver is dual conversion super-heterodyne type with the first IF 10.695MHz and the
second IF 455KHz.
Receiver is separated to blocks, 1’st IF section and 2’nd IF section. The PLL synthesizer
supplies 1’st local frequency 16.270MHz ~ 16.710MHz. The amplified 27MHz is mixed. With the
provide 1’st local frequencies Q102, Q103 mixes the incoming RF signal to generate 1’st IF signal. The
resulting first IF is 10.695MHz. Q102 and Q103 is the first converter, and 10.695MHz is sharply filtered
by L108 and crystal filter CF101. The first IF is again mixed with a second local oscillator of 10.24MHz.
With the 10.240MHz signal, IC101 FM IF IC converts the incoming signals to generate 2’nd IF
signal and recovered audio signals. 2’nd IF is filtered by a razor sharp ceramic filter CF101 coupled. The
455KHz signal from the 2’nd IF filter was amplified and limits internally. After amplification the signals
fed to the quardrature detector loop L109. Then could see the recovered signals Pin 11 of IC101.
With the amplitude of recovered signals, Q151 serves as an amplifier.
AM signals from the Pin 6 of IC101 were tapped with C161 and amplified two-stage amplifier
Q161, Q162. Q161 is a first 455KHz amplifier, and the Q161 being the last amplifier. D1
diode witch produce audio signal as well as negative DC voltage for AGC action. The negative voltage
also provides forward biasing to the emitter of ANL clipping transistor Q164. The biasing voltage has a
time constant determined R174 and C176. Therefore any sharp negative going pulse from D161 will back
bias Q164 and clipped. The way to recover the AM information audio is envelope detector.
61 is a detector
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TCB-660 Circuit Description Page 14
5. Test Equipment Setup and Alignment Instructions
5-1 General Section
5-1-1 Test Equipment Required
• DC power supply(13.8V/3A)
• DC Voltmeter or Oscilloscope
• RF attenuator (30dB)
5-1-2 Alignment Procedure
Step Setting Connection Adjuster Adjust for
1
RX VCO voltage Adj.
Channel & Frequency :
1CH, 26.956 MHz
Mic : Receive
Volume : Optional
Squelch : Optional
RF Gain : Optional
Mic Gain : Optional
DC voltmeter to VCO
Test point (Figure 1)
L301 1.5~2.0 V DC
2
TX VCO voltage Adj.
Channel & Frequency :
1CH, 26.956 MHz
Mic : Transmit(No Mod)
Volume : Optional
Squelch : Optional
RF Gain : Optional
Mic Gain : Optional
DC voltmeter to VCO
Test point (Figure 1)
Figure 1
L301 1.5~2.0 V DC
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TCB-660 Circuit Description Page 15
5-2 Transmitter Section
5-2-1 Test Equipment Required
• RF Power Meter • DC power supply(13.8V/3A)
• 50 ohms load (non-inductive) • Spectrum analyzer
• RF attenuator (30dB) • Frequency counter
• Oscilloscope • Coupler
• Audio generator • Modulation meter
5-2-2 Alignment Procedure
Step Setting Connection Adjuster Adjust for
1
RF Power Adj.
Channel : 19CH
Function : AM or FM Mode
CB/ANL Off/DX
MIC : Transmit
Volume : Optional
Squelch : Optional
RF Gain : Optional
MIC Gain : Minimum
Connect dummy load and RF
Power Meter to the EXT–ANT
connector on the set(Figure 3)
L701
L702
L703
Maximum
indication on
the Power
Meter(4.0W).
If indication is
not in 4W
range, ACP
Adjustment(R
V911)
2 Frequency Adj.
Channel & Frequency :
19CH, 26.956 MHz
Function : AM or FM Mode
CB/ANL Off/DX
Mic : Transmit(No Mod)
Volume : Optional
Squelch : Optional
RF Gain : Optional
MIC Gain : Optional
3
AM Modulation Adj.
Channel & Frequency :
19CH, 27.185MHz
MIC: Transmit
Function : AM Mode
CB/ANL Off/DX
Volume : Optional
Squelch : Optional
RF Gain : Optional
MIC Gain : Max
Connect dummy load and
Frequency Counter through
Coupler to RF Power Meter.
Connect RF Power Meter to
EXT-ANT connector on the
set(Figure 2).
Connection the audio
generator (set to 1 KHz)to the
microphone.
Connect the modulation meter
through the RF attenuator to
the ANT Connector. Adjust
the audio signal level to obtain
by 50% modulation.
When you increase the audio
signal by 20 dB, the
modulation should not exceed
95% Modulation(Figure 3).
CT302 Be sure that
the indication
of the
transmitter
frequency is
27.185MHz
±300 Hz on
the Frequency
Counter
RV231 85% ~ 95%
TTI 2007-02-23
TCB-660 Circuit Description Page 16
4
FM Deviation Adj.
Channel & Frequency :
19CH, 27.185MHz
MIC : Transmit
Function : FM Mode
CB/ANL Off/DX
Volume : Optional
Squelch : Optional
RF Gain : Optional
MIC Gain : Max
Connection the audio
generator (set to 1 KHz)to the
microphone.
Connect the modulation meter
through the RF attenuator to
the ANT Connector. Adjust
the audio signal level to obtain
by 1KHz deviation.
When you increase the audio
signal by 20 dB, the deviation
should not exceed 2.0KHz
deviation(Figure 3).
RV401 1.8KHz ~
2.0KHz
Figure 3
Figure 2
TTI 2007-02-23
TCB-660 Circuit Description Page 17
5-3 Receiver Section
5-3-1 Test Equipment Required
• Standard Signal Generator(SSG)
• DC power supply(13.8V/3A)
• AC Level Meter
• Distortion Meter
• Oscilloscope
• SINAD Meter
• 8 ohm Dummy Load
5-3-2 Alignment Procedure
Step Setting Connection Adjuster Adjust for
1
AM Audio Output Adj.
Channel & Frequency :
19CH, 27.185MHz
MIC : Receive
Function : AM Mode
CB/ANL Off/DX
Volume : Full clockwise
Squelch : Turn to counter
clockwise
RF Gain : Full clockwise
Connect RF Signal Generator
to EXT-ANT Connector.
Connect AC Level Meter and
Distortion Meter and SINAD
Meter across EXT SPK jack
with 8 ohm Dummy
Load(Figure 4)
L101
L103
L104
L105
L107
L108
L112
Maximum
indication on
AC Level
Meter. Reduce
output from
SSG until the
audio output
becomes about
2V.
2
FM Audio Output Adj.
Channel & Frequency :
19CH, 27.185MHz
MIC : Receive
Function : FM Mode
CB/ANL Off/DX
Volume : Full clockwise
Squelch : Turn to counter
clockwise
RF Gain : Full clockwise
3
Squelch Adj.
Channel & Frequency :
19CH, 27.185MHz
MIC : Receive
Function : FM Mode
CB/ANL Off/DX
SSG : 27.185MHz, 1KHz,
100uV, 1.5KHz Dev.
Volume : Full clockwise
Squelch : Full clockwise
clockwise
RF Gain : Full clockwise
Connect RF Signal Generator
to EXT-ANT Connector.
Connect AC Level Meter and
Distortion Meter and SINAD
Meter across EXT SPK jack
with 8 ohm Dummy
Load(Figure 4)
Connect RF Signal Generator
to EXT-ANT Connector.
Connect AC Level Meter and
Distortion Meter and SINAD
Meter across EXT SPK jack
with 8 ohm Dummy
Load(Figure 5)
L109 Maximum
indication on
AC Level
Meter. Reduce
output from
SSG until the
audio output
becomes about
2V.
RV131 Adjust until
the audio
output
appears.
TTI 2007-02-23
TCB-660 Circuit Description Page 18
TTI 2007-02-23
Q
SECTION3 PART LIST
PART LIST of TCB-660
Rev. 05 09-Feb-07
ITEM MAKER VENDOR ASS'Y REMARKS
* ELECT Parts
COVER ASS'Y
1 SPEAKER 66mm 66AR000-8P-4K11 ASAHI ASAHI MAN 1 SPK201
2 WIRE HARNESS PH-2PIN TO OPE UL1007 #26 L=200mm FINE FINE MAN 1 J204
ESCUTCHEON ASS'Y
3 PCB VOLUME 1LAYER CAPITAL MAN 1
4 VR A10K F-09115S A10K L15KQ POLYSHINE MAN 1 VR101
5 VR B50K F-09115N 3B50K L15K
6 CHIP RESISTOR 1K 1/16W 5% T 1608 PHILIPS SMD 1 R400
7 COIL AXIAL 6.8UH LAL03TB6R8K MAN 4 L501, L502, L504, L506
8 WAFER 10PIN PH-10A 180C FINE FINE MAN 1 J101
9 WIRE HARNESS PH-10PIN*2 UL1007 #26 L=50MM FINE FINE MAN 1 J101 --- J102
10 WIRE HARNESS PH-6PIN TO OPE UL1007 #26 L=70MM FINE FINE MAN 1 J502
11 CONNECTOR SOCKET HS6-TTI 16-6R HYESUNG MAN 1 J501
13 HEAT SINK TUBE diameter 4 mm x 15mm MAN 6
LCD PCB ASS'Y
14 PCB LED 1 LAYER CAPITAL MAN 1
15 PCB DISPLAY FR-4 / R-1 CAPITAL MAN 1
16 CHIP RESISTOR 1K 1/16W 5% T 1608 PHILIPS SMD 1 R810
17 CHIP RESISTOR 10K 1/16W 5% T 1608 PHILIPS SMD 5 R1, R805, R806, R811, R814
18 CHIP RESISTOR 100K 1/16W 5% T 1608 PHILIPS SMD 4 R2,R3,R4,R804
19 CHIP RESISTOR 1M 1/16W 5% T 1608 PHILIPS SMD 1 R803
20 CHIP RESISTOR 2.2K 1/16W 5% T 1608 PHILIPS SMD 10
21 CHIP RESISTOR 220K 1/16W 5% T 1608 PHILIPS SMD 1 R808
22 CHIP RESISTOR 47K 1/16W 5% T 1608 PHILIPS SMD 8
23 CHIP CERAMIC 0.01UF 1608 PHILIPS SMD 2 C806, C807
24 CHIP CERAMIC 1UF 1608 PHILIPS SMD 1 C805
25 CHIP CERAMIC 68PF 1608 PHILIPS SMD 2 C801, C802
26 CHIP TANTAL 10uF/16V A TYPE SMD 1 C811
27 CHIP TRANSISTOR KRA101S SOT-23 KEC SMD 1 Q803
28 CHIP TRANSISTOR KRC101S SOT-23 KEC SMD 1 Q802
29 CHIP TRANSISTOR KRC104S SOT-23 KEC SMD 1 Q801
30 LED BACK LIGHT CHIP LED AOT-0603P-B01-V BLUEWIZ SMD 7
POLYSHINE MAN 1 VR102
R832, R833, R834, R835, R836,
R8, R9, R10, R11, R12
R812, R816, R831, R851, R852,
R853, R854, R864,
D951, D952, D953, D954, D956,
D965, D966
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
ITEM MAKER VENDOR ASS'Y REMARKS
31 IC EEPROM AT24C02 (SOP-8) ATMEL SMD 1 IC802
32 IC CPU (FLASH) WITH TCB660 SOFTWARE JT5BL9 TOSHIBA TTI SMD 1 IC801
33 LCD DISPLAY SDM8A3926C FOR TCB-660 SANTECH MAN 1 LCD801
34 SW TACT TS-1109 HENGRONG MAN 5
35 RESONATOR 4.0MHz ZTA4.00MG D.TRON D.TRON MAN 1 X801
MAIN BODY ASS'Y
36 CONNECTOR HS6-TTI 239(A) HYESUNG MAN 1 J701
37 TRANSISTOR KTA1658 KEC MAN 1 Q911
38 TRANSISTOR 2SC2078 SANYO YANG WON MAN 1 Q704
39 IC TDA2003V ST MAN 1 IC201
UL1015#20
40 POWER CORD
MAIN PCB AUTO ASS'Y
41 PCB MAIN FR-4 / R-1 CAPITAL SMD 1
42 CHIP RESISTOR 0 1/16W 5% T 1608 PHILIPS SMD 2 R137, R201
43 CHIP RESISTOR 1 1/16W 5% T 1608 PHILIPS SMD 2 R711,R206
RED,BLACK
CABLE
2PIN PLUG ASS'Y PAN-ASIA PAN-ASIA MAN 1 J900
SW801, SW802, SW806, SW807,
SW808
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
44 CHIP RESISTOR 10 1/16W 5% T 1608 PHILIPS SMD 2 R133, R301
45 CHIP RESISTOR 100 1/16W 5% T 1608 PHILIPS SMD 6
46 CHIP RESISTOR 1K 1/16W 5% T 1608 PHILIPS SMD 17
47 CHIP RESISTOR 10K 1/16W 5% T 1608 PHILIPS SMD 17
48 CHIP RESISTOR 100K 1/16W 5% T 1608 PHILIPS SMD 9
49 CHIP RESISTOR 2M 1/16W 5% T 1608 PHILIPS SMD 1 R405
50 CHIP RESISTOR 150 1/16W 5% T 1608 PHILIPS SMD 1 R706
51 CHIP RESISTOR 1.5K 1/16W 5% T 1608 PHILIPS SMD 2 R742, R924
52 CHIP RESISTOR 15K 1/16W 5% T 1608 PHILIPS SMD 3 R155, R166, R235
53 CHIP RESISTOR 150K 1/16W 5% T 1608 PHILIPS SMD 1 R701
54 CHIP RESISTOR 2.2 1/16W 5% T 1608 PHILIPS SMD 1 R204
55 CHIP RESISTOR 220 1/16W 5% T 1608 PHILIPS SMD 3 R169, R702, R914
R104, R109, R134, R168, R314,
R401
R126, R164, R182, R187, R200,
R222, R234, R238, R308, R312,
R410, R501, R931, R955, R956,
R957, R958
R157, R161, R185, R315, R321,
R322, R323, R324, R325, R326,
R327, R412, R413, R414, R703,
R821, R823,
R140, R141, R159, R186, R188,
R202, R233, R309, R311
ITEM MAKER VENDOR ASS'Y REMARKS
R131, R203, R237, R307, R402,
56 CHIP RESISTOR 2.2K 1/16W 5% T 1608 PHILIPS SMD 12
57 CHIP RESISTOR 22K 1/16W 5% T 1608 PHILIPS SMD 6
58 CHIP RESISTOR 220K 1/16W 5% T 1608 PHILIPS SMD 2 R171, R177
59 CHIP RESISTOR 2.2M 1/16W 5% T 1608 SMD 1 R153
60 CHIP RESISTOR 2.7K 1/16W 5% T 1608 PHILIPS SMD 2 R167,R915
61 CHIP RESISTOR 27K 1/16W 5% T 1608 PHILIPS SMD 2 R102, R403
62 CHIP RESISTOR 3.3K 1/16W 5% T 1608 PHILIPS SMD
63 CHIP RESISTOR 33K 1/16W 5% T 1608 PHILIPS SMD 3 R172, R404, R407
64 CHIP RESISTOR 820K 1/16W 5% T 1608 PHILIPS SMD 1 R135
65 CHIP RESISTOR 390 1/16W 5% T 1608 PHILIPS SMD 1 R156
66 CHIP RESISTOR 39K 1/16W 5% T 1608 PHILIPS SMD 2 R163, R306
67 CHIP RESISTOR 47 1/16W 5% T 1608 PHILIPS SMD 3 R184, R705, R913
68 CHIP RESISTOR 470 1/16W 5% T 1608 PHILIPS SMD 8
69 CHIP RESISTOR 4.7K 1/16W 5% T 1608 PHILIPS SMD 5 R138, R205, R406, R704, R962
70 CHIP RESISTOR 47K 1/16W 5% T 1608 PHILIPS SMD 9
71 CHIP RESISTOR 470K 1/16W 5% T 1608 PHILIPS SMD 2 R154, R178
72 CHIP RESISTOR 5.6K 1/16W 5% T 1608 PHILIPS SMD 1 R408
73 CHIP RESISTOR 56K 1/16W 5% T 1608 PHILIPS SMD 2 R103, R313
74 CHIP RESISTOR 6.8K 1/16W 5% T 1608 PHILIPS SMD 1 R152
75 CHIP RESISTOR 68K 1/16W 5% T 1608 PHILIPS SMD 1 R189
76 CHIP RESISTOR 82K 1/16W 5% T 1608 PHILIPS SMD 1 R173
77 THERMISTOR 100 OHM NCP18XF101J03RB MURATA SMD 1 TH131
78 THERMISTOR 10K OHM NCP18XH103J03RB MURATA SMD 1 TH101
79 CHIP CERAMIC 0.001UF 1608 PHILIPS/SAMSUNG SMD 4 C181, C230, C239, C404
80 CHIP CERAMIC 0.01UF 1608 PHILIPS/SAMSUNG SMD 37
81 CHIP CERAMIC 0.1UF 1608 PHILIPS/SAMSUNG SMD 18
82 CHIP CERAMIC 1UF 1608 PHILIPS/SAMSUNG SMD 2 C159, C961
83 CHIP CERAMIC 0.022UF 1608 PHILIPS/SAMSUNG SMD 5 C166, C203, C214, C238, C403
R817, R822, R912, R922, R923,
R961, R01
R132, R162, R175, R302, R304,
R305
R101, R105, R106, R107, R108,
R165, R236,R709,
R122, R139, R174, R176, R300,
R303, R409, R411, R415
C111, C114, C115, C116, C117,
C118, C153, C154, C155, C156,
C157, C161, C162, C184, C201,
C231, C234, C235, C323, C412,
C415, C501, C502, C503, C504,
C506, C703, C704, C708, C713,
C901, C902, C903, C911, C922,
C924, C932
C122, C132, C134, C135, C137,
C138, C168, C169, C180, C186,
C236, C308, C322, C325, C401,
C402, C405, C413
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
ITEM MAKER VENDOR ASS'Y REMARKS
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
84 CHIP CERAMIC 0.047UF 1608 PHILIPS/SAMSUNG SMD 7
84 CHIP CERAMIC 0.47UF 1608 PHILIPS/SAMSUNG SMD 1 C212
85 CHIP CERAMIC 0.068UF 1608 PHILIPS/SAMSUNG SMD 1 C410
86 CHIP CERAMIC 10PF 1608 PHILIPS/SAMSUNG SMD 3 C96, C113, C324
87 CHIP CERAMIC 100PF 1608 PHILIPS/SAMSUNG SMD 7
88 CHIP CERAMIC 150PF 1608 PHILIPS/SAMSUNG SMD 6 C102,C104,C106,C131,C311,C722
89 CHIP CERAMIC 16PF 1608 PHILIPS/SAMSUNG SMD 1 C316
90 CHIP CERAMIC 18PF 1608 PHILIPS/SAMSUNG SMD 4 C98, C99, C112, C119
91 CHIP CERAMIC 180PF 1608 PHILIPS/SAMSUNG SMD 1 C734
92 CHIP CERAMIC 22PF 1608 PHILIPS/SAMSUNG SMD 1 C312
93 CHIP CERAMIC 220PF 1608 PHILIPS/SAMSUNG SMD 4 C329,C714, C717, C724
94 CHIP CERAMIC 3PF 1608 PHILIPS/SAMSUNG SMD 1 C319
95 CHIP CERAMIC 30PF 1608 PHILIPS/SAMSUNG SMD 1 C315
96 CHIP CERAMIC 33PF 1608 PHILIPS/SAMSUNG SMD 4 C108, C302, C318,C707
97 CHIP CERAMIC 330PF 1608 PHILIPS/SAMSUNG SMD 5 C715, C723, C725, C726, C729
98 CHIP CERAMIC 39PF 1608 PHILIPS/SAMSUNG SMD 1 C705
99 CHIP CERAMIC 47PF 1608 PHILIPS/SAMSUNG SMD 6
100 CHIP CERAMIC 470PF 1608 PHILIPS/SAMSUNG SMD 1 C718
101 CHIP CERAMIC 56PF 1608 PHILIPS/SAMSUNG SMD 1 C130
102 CHIP CERAMIC 6PF 1608 PHILIPS/SAMSUNG SMD 2 C317, C321
103 CHIP CERAMIC 68PF 1608 PHILIPS/SAMSUNG SMD 1 C97
104 CHIP CERAMIC 680PF 1608 PHILIPS/SAMSUNG SMD 1 C414
105 CHIP CERAMIC 82PF 1608 PHILIPS/SAMSUNG SMD 5 C406, C720, C727, C732, C701
106 CHIP CERAMIC 8PF 1608 PHILIPS/SAMSUNG SMD 1 C326
C152, C163, C164, C165, C310,
C721, C914
C101, C109, C313, C314, C711,
C731, C733
C103, C105, C107, C182, C328,
C736
107 CHIP CERAMIC 9PF 1608 PHILIPS/SAMSUNG SMD 1 C110
108 CHIP TANTAL 2.2uF/16V A TYPE SMD 1 C301
109 CHIP TRANSISTOR 2SK211-Y SOT-23 TOSHIBA SMD 2 Q102, Q103
110 CHIP TRANSISTOR KRA102S SOT-23 KEC SMD 1 Q163
111 CHIP TRANSISTOR KRC101S SOT-23 KEC SMD 9
112 CHIP TRANSISTOR KRC102S SOT-23 KEC SMD 1 Q914
113 CHIP TRANSISTOR KRC110S SOT-23 KEC SMD 2 Q121, Q961
114 CHIP TRANSISTOR KRC111S SOT-23 KEC SMD 3 Q202, Q502, Q962
115 CHIP TRANSISTOR KRC112S SOT-23 KEC SMD 3 Q152, Q154, Q913
Q104, Q105, Q153, Q305, Q311,
Q312, Q313, Q953, Q954
4
2
2
4
0
ITEM MAKER VENDOR ASS'Y REMARKS
116 CHIP TRANSISTOR KTA1504S SOT-23 KEC SMD 4 Q164, Q233, Q912, Q924
117 CHIP TRANSISTOR KTC3875S SOT-23 KEC SMD 9
118 CHIP TRANSISTOR KTC3880S SOT-23 KEC SMD 8
119 DIODE ZENER Z02W5.1V SOT-23 KEC SMD 1 DZ181
120 DIODE ZENER Z02W4.3V SOT-23 KEC SMD 1 DZ931
121 DIODE ZENER Z02W8.2V SOT-23 KEC SMD 1 DZ921
122 DIODE SI CHIP KDS181 SOT-23 KEC SMD 1 D401
123 DIODE SI CHIP KDS184 SOT-23 KEC SMD 10
124 DIODE SI CHIP KDS226 SOT-23 KEC SMD 1 D101
125 DIODE VARICAP KDV251S SOT-23 KEC SMD 2 D301, D302
126 IC PLL LC7152NM SANYO YANG WON SMD 1 IC301
127 IC OP AMP KIA358F KEC SMD 1 IC102
128 IC OP AMP KIA4558F KEC SMD 1 IC401
129 IC FM IF TK14489V TOKO SMD 1 IC101
MAIN PCB MANUAL ASS'Y
130 FILM RESISTOR 2.2 1/2W 5% ST MINI MAN 1 R712
131 FILM RESISTOR 10 1/2W 5% ST MINI MAN 1 R921
132 FILM RESISTOR 470 1/2W 5% ST MINI MAN 2 R953, R954
133 FILM RESISTOR 1K 1W 5% ST MINI MAN 2 R951, R952
134 CHIP RESISTOR 10K 1/16W 5% T 1608 PHILIPS SMD 1 R713
135 METAL OXID RESISTOR 10 2W 5% ST BULK MAN 1 R208
136 RESISTOR SEMI 47KB PH0630NOX0X-HA1-B
137 RESISTOR SEMI 2.2KB PH0630NOX0X-HA1-B
138 RESISTOR SEMI 22KB PH0630NOX0X-HA1-B
139 RESISTOR SEMI 4.7KB PH0630NOX0X-HA1-B
140 ELECT CAPACITOR 1UF KR1-16V010MA 5X11 DONGXIANG MAN 3 C167, C407, C408
141 ELECT CAPACITOR 10UF KR1-16V100MA 5X11 DONGXIANG MAN 9
142 ELECT CAPACITOR 100UF KR3-16V101MA 5X11 DONGXIANG MAN 2 C821, C923
143 ELECT CAPACITOR 1000UF KR1-16V102MF 10X20 DONGXIANG MAN 4 C207, C213, C217, C912
144 ELECT CAPACITOR 0.22UF KR1-16VR22MA 5X11 DONGXIANG MAN
145 ELECT CAPACITOR 2.2UF KR1-16V2R2MA 5X11 DONGXIANG MAN
146 ELECT CAPACITOR 22UF KR1-16V220MA 5X11 DONGXIANG MAN
147 ELECT CAPACITOR 220UF KR1-16V221MB 6.3X2
148 ELECT CAPACITOR 4.7UF KR1-16V4R7MA 5X11 DONGXIANG MAN 2 C411, C960
149 ELECT CAPACITOR 47UF KR1-16V470MA 5X11 DONGXIANG MAN 5 C143, C185, C206, C233, C933
150 CHIP CERAMIC 100PF 1608 PHILIPS/SAMSUNG SMD 1 C735
151 DIP TRIMMER 20PF KCVN620 FOKITS MAN 1 CT301
SOUNDWELL MAN 1 RV131,
SOUNDWELL MAN 1 RV231
SOUNDWELL MAN 1 RV401
SOUNDWELL MAN 1 RV911
DONGXIANG MAN
Q151, Q181, Q182, Q183, Q234,
Q742, Q921, Q923, Q931
Q101, Q161, Q162, Q301, Q302,
Q303, Q701, Q702
D102, D103, D105, D171, D180,
D233, D741, D742, D921, D961
C208, C210, C232, C331, C332,
C333, C913, C921, C931
1 C124
1 C741
0
2 C953, C954
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
9
9
L
7
ITEM MAKER VENDOR ASS'Y REMARKS
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
152 TRANSFORMER CHOKE T1 FINE FINE MAN 1 T901
153 TRANSFORMER EI-24(MOD.) T2 FINE FINE MAN 1 T201
154 IFT COIL RF FREE TX 27MHz TX1 FINE FINE MAN 2 L701, L702
155 COIL AXIAL 0.47uH LAL03TR0R47K MAN 2 L703,L302
156 IFT COIL 27MHz-B RX1 FINE FINE MAN 1 L101
157 IFT COIL 27MHz RX (7RC) RX2 FINE FINE MAN 1 L107
158 IFT COIL 10.7MHz RX-B RX3 FINE FINE MAN 1 L108
159 IFT COIL DETECTOR 455KHz RX4 FINE FINE MAN 1 L109
160 IFT COIL 455KHz-B RX5 FINE FINE MAN 1 L112
161 IFT COIL 16.5MHz VCO VCO1 FINE FINE MAN 1 L301
162
163 COIL AXIAL 1.5UH LAL03TR1R5K MAN 2 L102, L106
164 COIL AXIAL 6.8UH LAL03TB6R8K MAN 1 L706
165 COIL SPRING 2.5X0.8X7T:R 0.11UH FINE FINE MAN 1 L704
166 COIL SPRING 4X0.5X6T:R FINE FINE MAN 1 L712
167 COIL SPRING 4X0.5X7T:R FINE FINE MAN 1 L713
168 COIL SPRING 4X0.5X10T:R FINE FINE MAN 1 L714
169 COIL SPRING 6X0.8X5T:R 0.225UH FINE FINE MAN 1 L711
170 COIL SPRING 5X0.6X13.5T:R 0.5UH FINE FINE MAN 1 L707
171 CORE SPRING 5.5TX0.45XM5E®X2.3 0.17UH FINE FINE MAN 3 L103, L104, L105
172 COIL CHOKE 6UH BOBBIN CORE FINE FINE MAN 1 L201
173 TRANSISTOR 2SC2314F SANYO MAN 1 Q703
174 TRANSISTOR KTA1241 KEC MAN 2 Q951, Q952
175 DIODE 1N4004T/R 400V 1A MAN 2 D232, D901
176 DIODE 1N60 MAN 1 D161
177 CRYSTAL 10.240MHz 32PF:30PPM HC-4
178 CRYSTAL 4.50MHZ 12PF:30PPM HC-4
179 FILTER CRYSTAL 10L08A 10.695MHZ 49/T-3
D.TRON D.TRON MAN 1 X101
D.TRON D.TRON MAN 1 X301
D.TRON D.TRON MAN 1 XF101
180 FILTER CERAMIC LT455HTW D.TRON D.TRON MAN 1 CF101
181 JACK DC PJ-3074A HENGRONG HENGRONG MAN 1 J202
182 WIRE STRIP D0.8 * L20 mm MAN 1 JP1
183 WAFER 2PIN PH-2A 180C FINE FINE MAN 1 J205
184 WAFER 6PIN PH-6A 180C FINE FINE MAN 1 J503
185 WAFER 10PIN PH-10A 180C FINE FINE MAN 1 J102
Mechanical PARTS
* COVER ASS'Y
1 BOTTOM COVER SPC+BLACK, COATING,
2 UPPER COVER SPC+BLACK COATING, 0.
3 BRACKET SPK EGI, 1.0t, COATING
4 FELT(SPK) Φ65*0.3t, BLACK
5 FELT(COVER) 8*133*0.3t, BLACK
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
DESHAN 1 DESHAN 1 DESHAN 3 For speaker
Bonso 1 For speaker
Bonso 4
For bottom cover & upper coveradhesive(location: side)
B
B
Main body + Bottom & upper cover
ITEM MAKER VENDOR ASS'Y REMARKS
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
6 SCREW Mach(+) M3*8L-TAPTITE, BLACK,
7 SCREW Mach(+) M3*8L-TAPTITE, BLACK,
8 CUSHION 20*24*4.0t, EVA SPONGE, BLAC
SAME AS TCB770
SAME AS TCB770 / SAME AS ITEM.6
SAME AS TCB770
Bonso 3 Bracket(spk) mounting
Bonso 6
Bonso 1
For upper cover adhesive(location: center)
* ESCUTCHEON ASS'Y
9 ESCUTCHEON ABS. BLACK NEW Bonso 1 Front case plastic
10 CH KNOB ABS, BLACK
same as TCB880 Vol knob
Bonso 2 For Channel
11 KEY PAD SILICONE, CLEAR, PU coating NEW Union 1 12 LCD BRACKET SPTE, 0.3t
13 DIFFUSER LENS ACRYL, CLEAR
14 REFLECTOR ACRYL, CLEAR
15 ZEBRA SILICONE
16 WINDOW ACRYL, CLEAR
17 SCREW MACH(+) M2.6*5L, Black, FH
18 SCREW TAP(+) 2.6*8L-2S, Ni plating, BH
19 DOUBLE TAPE(WINDOW) 3M, 0.16t
20 WHITE SHEET POLYESTER, 0.1t
21 RING NUT BsBm
DOUBLE SIDE TAPE FOR DIFFUSER 29*3.5*0.2T
22
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
DESHAN 1 For diffuser
Bonso 1 Diffuser
Bonso 1 For diffuser
Bonso 1 For diffuser
Bonso 1 -
Bonso 4 Esc+Main body mounting
Bonso 2 Key PCB mounting
Bonso 1 For window
Bonso 1 For diffuser
Bonso 3 For channel,Rf,on/off
Bonso 2 For diffuser
* MAIN BODY ASS'Y
23 MAIN BODY EGI, 1.0t
24 CORD STOPPER PP, BLACK
25 SCREW MACH(+) M3*10L, Black, BH
26 SCREW Mach(+) 3*8L-TAPTITE, Black, BH
27 NUT M3, SS41
28 SPRING WASHER M3
29 BUSH NLLON66+GRASS 15%
30 ANT. TERMINAL SPTE, 0.2t
31 MICA MICA 0.6t
32 TX SHIELD CAN(1) SPTE, 0.3t
33 TX SHIELD CAN(2) SPTE, 0.3t
34 VCO SHIELD CAN SPTE, 0.3t
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770 / SAME AS ITEM.6
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
SAME AS TCB770
DESHAN 1 -
Yisheng 1 Wire stopper
Bonso 3 TR mounting
Bonso 4 Main PCB + Main body mounting
Bonso 3 TR mounting
Bonso 3 TR mounting
Yisheng 1 For TR
DESHAN 1 For Antenna
Bonso 1 For TR
DESHAN 1 For Main PCB(location: lower)
DESHAN 1 For Main PCB(location: upper)
DESHAN 1 For Vco
35 CAP RUBBER 8.0PHI NBR BLACK NEW TTI 1
** MICROPHONE ASSEMBLY
<ELECTRIC>
1 PCB MIC
EPB0-MIC880-00-00-000
2 Film Resistor 10K 1/8W ±5% 10K 1
3 Capacitor 103P ±10% 0603 103P 1
4 Sw Push SKPS-2210C 1
5 Sw Tact SKTS-1102A 3
6 MIC Condensor 4.5V 2.2K -44db ±2db PF0-9765P-LP 1
7 Curl Code 5CORD 1SIELD FINE FINE 1
8 MIC Connector HS6-TTI 16-6P HYESUNG 1
9 LEAD WIRE BLK 3:3 65m AWG28/1571 2
10 LEAD WIRE RED 3:3 65m AWG28/1571 2
1
H
T
e
e
ITEM MAKER VENDOR ASS'Y REMARKS
Location NONAME & DESCRIPTION VENDOE CODE Q'ty
<MECHANICAL>
1
BOTTOM COVER ABS, BLACK
2 UPPER COVER ABS, BLACK
3 DECO ABS, SILVER
4 PUSH LEVER ABS, BLACK
5 KNOB ABS, BLACK
6 HOLDER PC, BLACK
7 SPK HOLDER RUBBER, BLACK
PBOT130000-003
PTOP130000-003
PDEC130000-003
PPUL130000-003
PKNB130000-003
PHOL130000-003
AHOS880770-003
YiSheng
YiSheng 1
YiSheng 1
YiSheng 1
YiSheng 3
YiSheng 1
Longshenda 1
8 MIC BUSHING RUBBER, BLACK AMIB880770-003 Longshenda 1
9 CUSHION SPK 20*24*8.0t(One side double tape), EVA sponge, Black BONSO 1
10 MIC SPONGE 30*7*3t(No tape), EVA sponge, Black BONSO 1
11 SHRINKAGE TUBE D3x50mm BLACK BONSO 1
11 SCREW TAP(+) 2.6*16L-2S, Black, PH BONSO 4
12 SCREW TAP(+) 2.6*10L-2S, Black, BH BONSO 1
13 Logo label PE, 34.6*6.6*0.3T BONSO 1
14 Name label PE, 22*12*0.2T BONSO 1
<PACKING>
1
POLYBAG PE 100 * 900 * 0.05T BONSO
* ACCESSORY
1 BRACKET SET DESHAN 1
2
STUD BOLT ABS, M6*8L, BLACK
3
BRACKET(MIC) SUS304, 1.0t
4
PACKING RUBBER PACKING RUBBER
5
SCREW Mach(+) M3*8L, Taptite, Black, B
6
SCREW TAP(+) 5*12L-1S, ZN PLATING,
7
STAR WASHER-S M3, NI PLATING, B typ
8
STAR WASHER-L M5, NI PLATING, B typ
9 POWER CODE
same as TCB880 Yisheng
same as TCB880 DESHAN
same as TCB880 Union
same as TCB880 Bonso
same as TCB880 Bonso
same as TCB880 Bonso
same as TCB880 Bonso
UL1015#20
RED,BLACK
CABLE
2POS HOUSING TO
TERMINAL CABLE
PAN-ASIA PAN-ASIA 1
1
1
2
1
2
2
3
2
3
* PACKING ASS'Y
1 OWNER'S MANUAL Bonso 1
2 GIFTBOX SW1E 2.0T Bonso 1
3 INNER BOX A SW1E 2.0T, BROWN Bonso 1
4 INNER BOX B SW1E 2.0T, BROWN Bonso 1
5 WARNING LABEL Bonso 1
6 CODE 39 SERIAL NO. STICKER Bonso 2
7 NAME LABEL
8 OUT BOX DW1E 7.0T Bonso 0.1
9 SILICA-GEL 1g Bonso 1
10 ROHS STICKER Bonso 1.1
11 OPP TAPE 50MM Bonso 0.292
12
YELLOW STRAP 13mm * 2 Bonso 0.0052
SECTION4 MECHANICAL DISASSEMBLY
1
Upper cover
2
Bottom cover
3
Main body
4
Bracket(Set)
5
Key PCB
6
Main PCB
7
Ch knob
8
LED PCB
9
Nut for Mic connector
10
Washer for Mic connector
11
Escutcheon
12
Double tape(Window)
13
Window
14
Key pad
15
LCD Bracket
16
LCD
17
Diffuser Lens
18
Reflector
19
Zebra
20
Stud bolt
21
Packing rubber
22
Ant terminal
23
Felt(Cover)
24
Cushion
25
TX shield can(2)
26
Shield cover
27
Speaker
28
Bracket(Spk)
29
Felt(Spk)
30
Mic connector
31
Cu tape-1
32
Cu tape-2
33
TX shield can(1)
34
VCO shield can
35
White sheet
36
S/W PCB
37
Cord stopper
38
Washer for Ant connector
39
Nut for Ant connector
40
Bush
41
TR
42
Ant connector
43
Screw Mach(+)
44
Screw Mach(+)
45
Screw Mach(+)
46
Nut
47
Spring washer
48
Screw Tap(+)
49
Mica
SPC 0.75t, Black
SPC 0.75t, Black
EGI, 1.0t
SPC 1.6t, Blacke
1.6t
1.6t
ABS, Black
1.0t
ABS, Black
0.16t
Acryl
Silicone, PU coating
SPTE, 0.3t
Acryl
Acryl
Silicone
ABS, BsBm
NBR
SPTC, 0.2t
0.3t
EVA sponge
SPTE, 0.3t
SPTE, 0.3t
EGI, 1.0t
Dia 65 x 0.3t
Cu, 49x9x0.1t
Cu, 77x15x0.1t
SPTE, 0.3t
SPTE, 0.3t
PE, 0.1t
1.6t
PVC
Nylon66xGrass15%
M2.6x5L, FH
M3x8L_Taptite, BH
M3x10, BH
M3
M3
2.6x8L, BH
0.4t
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
4
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
13
3
3
3
2
1
REMARKNO PART NAME DESCRIPTION QTY
For TR
For Escutcheon
For speaker bracket,Main PCB,Cover
For TR
For TR
For TR
For Key PCB
SECTION5 BOARD LAYOUT
5-1 Main PCB (Top side)
Main PCB (Top Silk)
Main PCB (Bottom side)
Main PCB ( Bottom Silk)
5-2 Front PCB (Top Side)
Front PCB (Top Silk)
Front PCB (Bottom Side)
Front PCB (Bottom silk)
5-3 Volume PCB (Top Side)
Volume PCB (Bottom Side)
SECTION6 BLOCK DIAGRAM
SECTION7 SCHEMATIC
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