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Intek M-150 Plus Service Manual

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Download this manual See also: Owner's Manual
Model No: M150 Plus
Customer: INTEK
Rev No: A
M-150 Plus
Service Manual
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1

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Summary of Contents for Intek M-150 Plus

  • Page 1 Model No: M150 Plus Customer: INTEK Rev No: A M-150 Plus Service Manual...
  • Page 2 Model No: M150 Plus Customer: INTEK Rev No: A Page Table of Contents Specifications …………………………………………………………….……3 Test and Alignment Procedure ……………………………………….….…….4 Block Diagram ………………………………………………………….……13 Schematic Diagram ……………………………………………….………. 14 Printed Circuit Board ……………………………………………………… 20 Channel Frequency Charts ……………………………………….…………22 Parts List ……………………………………………………………………31 Semiconductor Voltage Chart ………………………………………………...37...
  • Page 3 Model No: M150 Plus Customer: INTEK Rev No: A SPECIFICATIONS 1. GENERAL Channels………………………...……………………………....…….400 Ch AM/FM 4W Frequency Range………………………………...……………… …. …..…25.615 to 30.105 MHz FrequencyControl……………………………………………………..…………..……………..…PLL Operating Temperature Range……………………..……………………………….…-10° / +55°C DC Input Voltage…………………………...……………………………………..13.2 V DC ±15% Size………………………………………….……………..……….…180(L) X 35(H) X 140(D) mm Weight……………………………………………………..………………..……...…………0.850 kg...
  • Page 4 Model No: M150 Plus Customer: INTEK Rev No: A OPERATION INSTRUCTIONS Having properly installed your batteries and hooked-up the antenna, you are now ready to operate your radio for optimum reception and voice transmission. Turn the power “ON” with ON/OFF switch.
  • Page 5 Model No: M150 Plus Customer: INTEK Rev No: A THEORY OF OPERATIONS TRANSMITTER A. RF Amplification The output of double AMP Q14 is fed through tuning IFT L8 to the base of pre driver AMP Q15. The output is then supplied through tuning circuit L9 to RF driver AMP Q16. The output of Q16 is supplied with tuning circuit L10 and C116,C67,C95 and goes to the base of final RF AMP Q17.

  • Page 6: Troubleshooting Hints

    Model No: M150 Plus Customer: INTEK Rev No: A E. Receiver CB receiver is dual conversion supper-heterodyne type with the first IF 10.695 MHz and second IF 455 KHz. Receiver is separated two blocks, 1 IF section and 2 IF section. The PLL synthesizer supplies first local frequency 16.270 ~ 16.710 MHz.(for EU) and 16.90625 MHz ~ 17.29625 MHz (for UK) With the provided first...

  • Page 7: Test Equipment Setup

    Model No: M150 Plus Customer: INTEK Rev No: A • Defective microphone. • Poor audio output and • Replace • Replace the defective modulation microphone amplifier defective components. • components (IC3). • Defective microphone Replace • Replace the connector components. • Defective ALC circuit defective components.

  • Page 8: Alignment Procedure

    Model No: M150 Plus Customer: INTEK Rev No: A B. RX test equipment setup: SINAD Meter RF Signal Power Generator Supply Distortion 8 ohm Radio Meter loading U.U.T. Oscilloscope Note: U.U.T. = device under test Alignment Procedure. VCO Adjust. 4.1.1 VCO Voltage Adjust: Test point TP1 connect to the multi-meter，set UUT enter test mode.
  • Page 9 Model No: M150 Plus Customer: INTEK Rev No: A 7. Set RF S.S.G Freq.: 10.695MHz，Mod.: 60%，Fmod.: 1KHz, Output level:1mV. 8. Squelch Volume set to minimum position, volume control set to around middle position. 9. Adjust IFT L5 for maximum audio output and minimum distortion at the distortion meter. ( distortion less than 5%).
  • Page 10 Model No: M150 Plus Customer: INTEK Rev No: A 2. Turn the RF S.S.G output for 100uV without modulation. 3. Adjust RV6 for 9 characters displayed at the RX signal strength of the LCD. 4. Turn the RF S.S.G level output increase 30dB, the RX signal strength should up to +30 position.
  • Page 11 Model No: M150 Plus Customer: INTEK Rev No: A 1. UUT set to FM I2 CH19, input of power-meter to antenna input terminal. Input of MIC socket to the audio frequency signal generator output terminal. Mic Gain set to maximum. Compander set to Off.
  • Page 12 Model No: M150 Plus Customer: INTEK Rev No: A 7. BAND SELECTION: M-150: 1) switch ON radio while pressing the UP key display will show the current band ID code (blinking) select band using the UP or DN keys shortly press the DN key to confirm...
  • Page 13 Model No: M150 Plus Customer: INTEK Rev No: A PLL CIRCUIT BLOCK DIAGRAM 1. INTRODUCTION The frequencies for transmitter and receiver first local frequencies are all derived from a single 4.0 MHz crystal by means of a phase locked loop. The first local oscillator frequencies are 26.965 MHz (CH 1) to 27.405MHz (CH 40) for EU and 27.60125 MHz (CH 1) to 27.99125 MHz (CH 40) for UK .
  • Page 14 Model No: M150 Plus Customer: INTEK Rev No: A INTERNAL BLOCK DIAGRAM 3. DESCRIPTIONS OF EACH BLOCK A. Introduction The synthesizer is implemented with the following Components: PLL IC (IC4) X-TAL (X2) VCO, VARICAP DOIDE (D402,D403)
  • Page 15 Model No: M150 Plus Customer: INTEK Rev No: A IC5 is a cmos LSI that includes most of PLL block and driver, the Q403-Q406,Q408, C412, C421, C416, C417 and L17, Varicap diode D402,D403 are clapp oscillator circuit to operate as a VCO. Q406 is a switching transistor to connect or disconnect the tuning capacitor in the VCO oscillator tank circuit for transmitter or receiver.
  • Page 16 Model No: M150 Plus Customer: INTEK Rev No: A 4. FREQUENCY STABILITY LET : Fo = Crystal oscillator frequency Fr = Phase detector reference frequency Fvco = VCO frequency Ft = Transmit frequency Then : Fr = Fo/800 And under locked conditions : Fr = Fvco / N WHERE, “N”...
  • Page 24 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies Tables for M-760 Plus Specification LCD Display Legal Bands Italy 40CH AM / FM 4W Italy 36CH AM / FM 4W Germany 80CH FM 4W 12CH AM 1W Germany 40CH FM 4W 12CH AM 1W...
  • Page 25 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for EI band (Italy 40CH AM / FM 4W) Modulation Frequency (MHz) 26.965 AM / FM 26.975 AM / FM 26.985 AM / FM 27.005 AM / FM 27.015 AM / FM 27.025...
  • Page 26 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for I2 band (Italy 34CH AM / FM 4W) Modulation Frequency (MHz) 26.965 AM / FM 26.975 AM / FM 26.985 AM / FM 27.005 AM / FM 27.015 AM / FM 27.025...
  • Page 27 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for DE band (Germany 80CH FM 4W 12CH AM 1W) Modulation Modulation Frequency (MHz) Frequency (MHz) 26.965 26.565 26.975 26.575 26.985 26.585 27.005 AM / FM 26.595 27.015 AM / FM 26.605...
  • Page 28 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for D2 band (Germany 40CH FM 4W 12CH AM 1W) Modulation Frequency (MHz) 26.965 26.975 26.985 27.005 AM / FM 27.015 AM / FM 27.025 AM / FM 27.035 AM / FM 27.055...
  • Page 29 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for EU band (Europe 40CH FM 4W 40CH AM 1W) Modulation Frequency (MHz) 26.965 AM / FM 26.975 AM / FM 26.985 AM / FM 27.005 AM / FM 27.015 AM / FM 27.025...
  • Page 30 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for CE band (CEPT 40CH FM 4W) Modulation Frequency (MHz) 26.965 26.975 26.985 27.005 27.015 27.025 27.035 27.055 27.065 27.075 27.085 27.105 27.115 27.125 27.135 27.155 27.165 27.175 27.185 27.205 27.215...
  • Page 31 Model No: M150 Plus Customer: INTEK Rev No: A Frequency For UK Band(England 40CH FM 4W + CEPT 40CH 4W) England Frequency CEPT Frequency Modulation Modulation Frequency (MHz) Frequency (MHz) 27.60125 26.965 27.61125 26.975 27.62125 26.985 27.63125 27.005 27.64125 27.015 27.65125...
  • Page 32 Model No: M150 Plus Customer: INTEK Rev No: A Frequencies for PL band (Poland 40CH AM / FM 4W Polish Frequencies –5kHz) Modulation Frequency (MHz) 26.960 AM / FM 26.970 AM / FM 26.980 AM / FM 27.000 AM / FM 27.010...
  • Page 33 Model No: M150 Plus Customer: INTEK Rev No: A PART LIST Item Part Number Description 1 KEJ-010 ANTENNA RECEPTACLE 89713-0013 2 KEJ-512 MIC SOCKET 6PIN N- 16-6R QIINGXI NG 3 KEJW-TA24BK TINNED WIRE UL1007 #24 BLACK 1 SPMIC(L=0.11),VR1,VR2 VR3,VR4SW 4 KEJW-TA24BL...
  • Page 34 Model No: M150 Plus Customer: INTEK Rev No: A 42 KEL-V208AD COIL VARIABLE 0.20 UH 20% 1 L24 43 KEL-V308WFD COIL VARIABLE 0.3U H 20% 1 L24 44 KEL-101MA-1 COIL FIXED 100UH 1 L23 45 KEL-102K-LF FIXED COIL 1MH 10%...
  • Page 35 Model No: M150 Plus Customer: INTEK Rev No: A 91 KCR-101B RES. CHIP 1/16W 100 2 R88,R5 92 KCR-102B RES. CHIP 1/16W 1K 1 R1 93 KCR-103B RES. CHIP 1/16W 10K 5 R72,R147,R153,R155,R161 94 KCR-151B RES. CHIP 1/16W 150 1 R62 95 KCR-152B RES.
  • Page 36 Model No: M150 Plus Customer: INTEK Rev No: A 132 KCC-470FRJNPOB CAP. CER. CHIP 50V CH J% 47PF 3 C256,C39,C12 133 KCC-472FRKBB CAP. CER. CHIP 50V B K% 0.0047UF 1 C23 134 KCC-473DRKBB CAP. CER. CHIP 16V B K% 0.047uF...
  • Page 37 Model No: M150 Plus Customer: INTEK Rev No: A 173 KCR-273B RES. CHIP 1/16W 27 2 R13,R44 174 KCR-303B RES. CHIP 1/16W 30 1 R45 175 KCR-332B RES. CHIP 1/16W 3. 3 R34,R133,R97 176 KCR-333B RES. CHIP 1/16W 33 4 R15,R141,R414,R30 177 KCR-334B RES.
  • Page 38 Model No: M150 Plus Customer: INTEK Rev No: A 219 KED-L111A CTTL-0201A-48X21-L D CTT AMBER 220 KED-L204R DIODE LED EL204HD 1 LED4 221 KESW-015 SWITCH TACT EVQ-JA C-04M 8 K1,K2,K3,K4,K8,K9,K10,K11 222 M-760B2S FRONT PCB SMT 223 KCD-L23A-LT LED CHIP AMBER LT8...
  • Page 39 Model No: M150 Plus Customer: INTEK Rev No: A Voltage Chart TRANSISTOR Ref. Ref. 2SK211-Y MMBTRC104SS 2SK211-Y MMBTRC104SS KCT3880S KTA1504S 2SC2314F C2078 13.2 13.0 MMBTSC3265Y 8.10 KTA1504S MMBTSC3265Y...
  • Page 40 Model No: M150 Plus Customer: INTEK Rev No: A DIODE Ref. Ref. KDS160 8V2BSCST KDS160 1K261 10.6 1N4004 1N4004 12.8 13.2 KDS160 KDS160 KDS160 IC4 TB31202F...
  • Page 41 Model No: M150 Plus Customer: INTEK Rev No: A IC3 AZ324M IC8 TDA2003 13.2 13.2 IC6 KIA78L05F 13.2 13.2 IC7 SL5019...
  • Page 42 Model No: M150 Plus Customer: INTEK Rev No: A IC5 TMP86CH21 5.00...