TTI TCB-660 Service Manual Download | Manualshive

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SERVICE

MANUAL

MULTI CHANNEL AM/FM TRANSCEIVER

TTI Tech Co.,Ltd.

Downloaded from www.cbradio.nl

TCB-660

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Summary of Contents for TCB-660

Page 1: ...SERVICE MANUAL MULTI CHANNEL AM FM TRANSCEIVER TTI Tech Co Ltd Downloaded from www cbradio nl TCB 660...

Page 2: ...AND FUNCTION 4 DESCRIPTION OF FREQUENCY DETERMINING AND STABILIZING CIRCUIT 5 TEST EQUIPMENT SETUP AND ALIGNMENT INSTRUCTIONS SECTION 5 3 VOLUME PCB 3 PART LIST SECTION 5 1 MAIN PCB 5 2 FRONT PCB 4 ME...

Page 3: ...ge without prior notice T R A N S M I T T E R R E C E I V E R G E N E R A L 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...

Page 4: ...asic 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 Transm...

Page 5: ...Squelch Adjustable from 0 2 uV to 100 uV 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 Intermediate Frequency 1st IF 10 695 MHz 2nd IF 455 KHz...

Page 6: ...for use of the Citizen Radio Service z Front Panel Controls LCD Channel and RX TX Receiver Audio Control With Power ON OFF Control Volume Squelch Control Volume Channel UP Down Key Switch AM FM Select...

Page 7: ...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 Iin...

Page 8: ...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...

Page 9: ...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 LC715...

Page 10: ...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 div...

Page 11: ...btained 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...

Page 12: ...2 16 46 5431 13 5775 17 27 165 3294 16 47 5433 13 5825 18 27 175 3296 16 48 5435 13 5875 19 27 185 3298 16 49 5437 13 5925 20 27 205 3302 16 51 5441 13 6025 21 27 215 3304 16 52 5443 13 6075 22 27 225...

Page 13: ...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 co...

Page 14: ...er 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 mixe...

Page 15: ...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 outp...

Page 16: ...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 n...

Page 17: ...re 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...

Page 18: ...1 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 Connect dummy load and...

Page 19: ...tional 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 l...

Page 20: ...educe 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 co...

Page 21: ...TCB 660 Circuit Description Page 18 TTI 2007 02 23...

Page 22: ...5 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...

Page 23: ...R 1 1 16W 5 T 1608 PHILIPS SMD 2 R711 R206 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 R104 R109 R134 R168 R314 R401 46 CHIP RESISTOR 1...

Page 24: ...8 PHILIPS SMD 5 R138 R205 R406 R704 R962 70 CHIP RESISTOR 47K 1 16W 5 T 1608 PHILIPS SMD 9 R122 R139 R174 R176 R300 R303 R409 R411 R415 71 CHIP RESISTOR 470K 1 16W 5 T 1608 PHILIPS SMD 2 R154 R178 72...

Page 25: ...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 C103...

Page 26: ...ESISTOR 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 B4SOUNDWELL MA...

Page 27: ...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 1...

Page 28: ...BsBm SAME AS TCB770 Bonso 3 For channel Rf on off 22 DOUBLE SIDE TAPE FOR DIFFUSER 29 3 5 0 2T SAME AS TCB770 Bonso 2 For diffuser MAIN BODY ASS Y 23 MAIN BODY EGI 1 0t SAME AS TCB770 DESHAN 1 24 CORD...

Page 29: ...1 14 Name label PE 22 12 0 2T BONSO 1 PACKING 1 POLYBAG PE 100 900 0 05T BONSO 1 ACCESSORY 1 BRACKET SET DESHAN 1 2 STUD BOLT ABS M6 8L BLACK same as TCB880 Yisheng 2 3 BRACKET MIC SUS304 1 0t same as...

Page 30: ...SECTION4 MECHANICAL DISASSEMBLY...

Page 31: ...ud bolt ABS BsBm 2 Packing rubber NBR 2 1 6t Main PCB 1 S W PCB 1 6t 1 Felt Cover 0 3t 4 Cushion EVA sponge 1 TX shield can 1 SPTE 0 3t 1 VCO shield can SPTE 0 3t 1 Cu tape 2 Cu 77x15x0 1t 1 Cu tape 1...

Page 32: ...5 1 MainPCB Top side SECTION5 BOARD LAYOUT...

Page 33: ...Main PCB Top Silk...

Page 34: ...Main PCB Bottom side...

Page 35: ...Main PCB Bottom Silk...

Page 36: ...5 2 Front PCB Top Side...

Page 37: ...Front PCB Top Silk...

Page 38: ...Front PCB Bottom Side...

Page 39: ...Front PCB Bottom silk...

Page 40: ...5 3 Volume PCB Top Side...

Page 41: ...Volume PCB Bottom Side...

Page 42: ...SECTION6 BLOCK DIAGRAM...

Page 43: ...SECTION7 SCHEMATIC...

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