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Intek M-550 Power Service Manual

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Model No:
3399
Customer :
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Model No:
M-550 Power
M-550 Power

Service Manual

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  • Page 1: Service Manual

    Model No: 3399 Model No: Drawring No: M-550 Power Customer : Rev,Date: M-550 Power Service Manual Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 2 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Table of Contents Page Specifications Test and Alignment Procedure Block Diagram Schematic Diagram Printed Circuit Board Channel Frequency Charts Parts List Semiconductor Voltage Chart Semiconductor Lead Assignment and Block Diagram...

  • Page 3: Specifications

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: SPECIFICATIONS 1. GENERAL Channels………………………...……………………………....400 Ch AM/FM 4W Frequency Range………………………………...……………… ..25.315 to 29.105 MHz FrequencyControl……………………………………………………..…………..………PLL Operating Temperature Range……………………..…………………………-10° / +55°C DC Input Voltage…………………………...……………………………..13.2 V DC ±15% Size………………………………………….……………….…180(L) X 50(H) X 153(D) mm Weight………………………………………………………………..……...…………0.850 kg...
  • Page 4 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 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: Theory Of Operations

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: THEORY OF OPERATIONS TRANSMITTER A. RF Amplification The output of double AMP Q301 is fed through tuning IFT L301 and L302 to the base of pre driver AMP Q302. The output is then supplied to RF driver AMP Q303. The output of Q303 is supplied with tuning circuit L304 and C317,C315,C21 and goes to the base of final RF AMP Q304.

  • Page 6: Troubleshooting Hints

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 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.
  • Page 7 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: • Defective VR1. • Replace • Replace • Defective microphone. • Replace the defective • Poor audio output and defective modulation No modulation components. microphone amplifier components (IC103). • Defective microphone connector components.

  • Page 8: Alignment Procedure

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: ALIGNMENT PROCEDURE Connection Adjuster Adjust for Step Setting Frequency adjustment MIC : Receive Frequency counter Volume : optional to dummy load CT201 27.185MHz±300Hz Squelch : optional (Figure 1). CH selector : 19 EU...

  • Page 9: Transmitter Section

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: TRANSMITTER SECTION Test Equipment Required • RF power meter (RF SSVM) • DC power supply (13.2 volt, 5 amp) • 50 ohms dummy load (non-inductive) • Spectrum analyzer • RF attenuator (50 ohms non-inductive) •...
  • Page 10 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: TX power adjustment Connect dummy load Adjust until Volume : optional and oscilloscope through 3.6-4 Watts Squelch : optional Coupler to RF CH : selector : 19 powermeter connect...

  • Page 11: Receiver Section

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Figure 4 RECEIVER SECTION Test Equipment Required • RF Signal generator (RFSG) • SSVM • Distortion meter • DC power supply ALIGNMENT PROCEDURE Connection Adjuster Adjust for Step Setting...
  • Page 12 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Squelch adjustment Connect RF signal Adjust until the audio MIC : Receive generator to EXT-ANT output appears. Volume : 50mW (2V) Jack. Connect SSVM Squelch : Clockwise and distortion meter to...
  • Page 13 Model No: 3399 Title Drawring No: M-110 550 Power Customer : Rev,Date: Figure 6 Figure 7 Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 14 Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 16 Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 17 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: PLL CIRCUIT BLOCK DIAGRAM 1. INTRODUCTION The frequencies for transmitter and receiver first local frequencies are all derived from a single 10.240 MHz crystal by means of a phase locked loop. The first local oscillator frequencies are 16.270 MHz (CH 1) to 16.710 MHz (CH 40) for EU and 16.90625 MHz (CH 1) to 17.29625 MHz (CH 40) for UK...
  • Page 18 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 2. BASIC SYNTHESIZER SCHEME The crystal frequency (10.240MHz) is divided by 1800 times to make 2.5 KHz 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 11 of IC6.

  • Page 19: Internal Block Diagram

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: The VCO frequency goes to the double circuit, which doubles the incoming signals. Double output Frequency 26.965 MHz Transmit CH 1, 13.4825 MHz 27.60125 MHz _______ CH 1, 13.800625 MHz 27.405 MHz...
  • Page 20 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: DIVIDE RATIO, VCO RX TX FREQUENCIES FOR EACH CHANNEL OF “EU” Frequencies Channels (MHz) Frequencies Frequencies 26.965 6508 16.27 5393 13.4825 26.975 6512 16.28 5395 13.4875 26.985 6516 16.29 5397 13.4925...
  • Page 21 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.375 6672 16.68 5475 13.6875 27.385 6676 16.69 5477 13.6925 27.395 6680 16.70 5479 13.6975 27.405 6684 16.71 5481 13.7025 DIVIDE RATIO, VCO RX/TX FREQUENCIES FOR EACH CHANNEL OF “UK”...
  • Page 22 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.90125 6882.5 17.20625 5580.25 13.950625 27.91125 6886.5 17.21625 5582.25 13.955625 27.92125 6890.5 17.22625 5584.25 13.960625 27.93125 6844.5 17.23625 5586.25 13.965625 27.94125 6898.5 17.24625 5588.25 13.970625 27.95125 6902.5 17.25625 5590.25 13.975625...

  • Page 23: Frequency Stability

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: D. Phase detector and VCO control The detector is a digital phase comparator which 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.
  • Page 24 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Printed Circuit Board Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 25 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 26 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Created by: Approved by: Rev.No: For Stage: Release Date: Page:...

  • Page 27: Specification

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BANDS / FREQUENCY TABLE Total no. 10 bands are available, as follows : BAND BAND SPECIFICATION CODE ITALY 40CH AM / FM 4W ITALY 36CH AM / FM 4W...
  • Page 28 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 01 ITALY 40CH AM / FM 4W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 AM / FM 27.215 AM / FM 26.975 AM / FM 27.225 AM / FM 26.985...
  • Page 29 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 02 ITALY 36CH AM / FM 4W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 AM / FM 27.185 AM / FM 26.975 AM / FM 27.205 AM / FM 26.985...
  • Page 30 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 03 GERMANY 80CH FM 4W / 12CH AM 1W Frequency (MHz) Modulation Frequency (MHz) Modulation 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 31 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 04 GERMANY 40CH FM 4W / 12CH AM 1W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 27.215 26.975 27.225 26.985 27.255 27.005 AM / FM 27.235 27.015 AM / FM 27.245...
  • Page 32 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 05 EUROPE 40CH FM 4W / 40CH AM 1W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 AM / FM 27.215 AM / FM 26.975 AM / FM 27.225 AM / FM 26.985...
  • Page 33 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 06 CEPT 40CH FM 4W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 27.215 26.975 27.225 26.985 27.255 27.005 27.235 27.015 27.245 27.025 27.265 27.035 27.275 27.055 27.285 27.065 27.295...
  • Page 34 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 07 ENGLAND 40CH FM 4W / UK FREQUENCIES + EC 40CH FM 4W CEPT Frequency (MHz) Modulation Frequency (MHz) Modulation 27.60125 26.965 27.61125 26.975 27.62125 26.985 27.63125 27.005 27.64125...
  • Page 35 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 08 POLAND 40CH AM / FM 4W / POLISH FREQUENCIES –5KHz Frequency (MHz) Modulation Frequency (MHz) Modulation 26.960 AM / FM 27.210 AM / FM 26.970 AM / FM 27.220...
  • Page 36 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: BAND 09 SPECIAL BAND A 100CH AM / FM 4W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 AM / FM 27.535 AM / FM 26.975 AM / FM 27.555 AM / FM 26.985...
  • Page 37 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.415 AM / FM 27.985 AM / FM 27.425 AM / FM 28.005 AM / FM 27.435 AM / FM 28.015 AM / FM 27.455 AM / FM 28.025 AM / FM 27.465...
  • Page 38 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.305 AM / FM 26.515 AM / FM 27.315 AM / FM 26.505 AM / FM 27.325 AM / FM 26.495 AM / FM 27.335 AM / FM 26.485 AM / FM 27.345...
  • Page 39 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.150 AM / FM 27.710 AM / FM 27.160 AM / FM 27.720 AM / FM 27.170 AM / FM 27.730 AM / FM 27.180 AM / FM 27.740 AM / FM 27.200...
  • Page 40 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: D BAND 12 SPECIAL BAND 100CH AM / FM 4W POLISH FREQUENCIES –5KHz Frequency (MHz) Modulation Frequency (MHz) Modulation 26.960 AM / FM 26.850 AM / FM 26.970 AM / FM 26.840...
  • Page 41 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.360 AM / FM 26.450 AM / FM 27.370 AM / FM 26.440 AM / FM 27.380 AM / FM 26.430 AM / FM 27.390 AM / FM 26.420 AM / FM 27.400...
  • Page 42 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.145 AM / FM 27.715 AM / FM 27.155 AM / FM 27.725 AM / FM 27.165 AM / FM 27.735 AM / FM 27.175 AM / FM 27.745 AM / FM 27.185...
  • Page 43 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: F BAND 14 SPECIAL BAND 100CH AM / FM 4W+ 10 Private Channels Frequency (MHz) Modulation Frequency (MHz) Modulation 26.965 AM / FM 26.415 AM / FM 26.975 AM / FM 26.425...
  • Page 44 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 27.355 AM / FM 26.795 AM / FM 27.365 AM / FM 26.815 AM / FM 27.375 AM / FM 26.825 AM / FM 27.385 AM / FM 26.835 AM / FM 27.395...
  • Page 45 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 28.315 AM / FM 28.815 AM / FM 28.325 AM / FM 28.825 AM / FM 28.335 AM / FM 28.835 AM / FM 28.345 AM / FM 28.845 AM / FM 28.355...
  • Page 46 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: H BAND 16 SPECIAL BAND 100CH AM / FM 4W Frequency (MHz) Modulation Frequency (MHz) Modulation 26.305 AM / FM 25.805 AM / FM 26.295 AM / FM 25.795 AM / FM 26.285...
  • Page 47 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 25.905 AM / FM 25.405 AM / FM 25.895 AM / FM 25.395 AM / FM 25.885 AM / FM 25.385 AM / FM 25.875 AM / FM 25.375 AM / FM 25.865...
  • Page 48 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 15 221-889-8 AUDIO POWER AMPLIFIEUTC TDA2003(V)(TO-220-5 ICP IC104 16 421-046-7 CONNECTOR CH-239(A) SW-1229 J103 17 421-643-6A CONNECTOR SOCKET SCN-16-6(M1)R PCB TYPE ICP 18 429-070-9B FLAT WIRE 06P 60MM 2.5PITCH...
  • Page 49 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 42 05B-103-5Z CHIP RESISTOR 10K 1/16W 5% T 1608 R19.44.59.134.221.305.444.446 43 05B-104-6Z CHIP RESISTOR 100K 1/16W 5% T 1608 R8.29.57.157.406.409.411.415. 44 05B-105-7Z CHIP RESISTOR 1M 1/16W 5% T 1608 R135.434...
  • Page 50 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 66 05B-472-8Z CHIP RESISTOR 4.7K 1/16W 5% T 1608 R41.42.67.144.303.304.315 67 05B-473-9Z CHIP RESISTOR 47K 1/16W 5% T 1608 R2.11.21.23.25.40.101.146.271. 272.273.274.435.437.443.461.13 68 05B-474-0Z CHIP RESISTOR 470K 1/16W 5% T 1608 R48.138...
  • Page 51 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 87 130-620-1 CHIP CERAMIC 0.0068UF GRM39 X7R682K 50 ICP C454 88 130-630-9Y CHIP CERAMIC 0.068UF GRM39 X7R683K 16 ICP C411.455 89 131-092-8Y CHIP CERAMIC 10PF GRM39 COG100D 50 ICP C4.20.28.31.114.425...
  • Page 52 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 115 200-082-8 TRANSISTOR KRA226S (SOT-23) 116 202-085-9 TRANSISTOR KRC101S Q16.17.103.406.407 117 202-092-5 KRA110SPK 118 202-095-8Z TRANSISTOR KRC104SND Q5.11.13.109.202.209.212 119 202-106-5 TRANSISTOR KTA1504SY Q1.2.9.113.205.208.213 120 202-112-0Y TRANSISTOR STC2412G Q3.4.6.7.8.18.104.108.112.114. 115.207.211.215...
  • Page 53 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 138 533-99M-PM MP MANUAL ASS'Y 139 019-479-8W METAL OXIDE RESISTOR4.7 2W 5% ST R207.207A 140 030-100-6Z FILM RESISTOR 10 1/ 2W 5% ST MINI ICP R225 141 030-101-7Z FILM RESISTOR 100 1/ 2W 5% ST MINI ICP R24.178...
  • Page 54 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 164 130-188-8Z AXIAL CERAMIC 0.01UF EP050Y103MN 16 ICP C149 165 130-227-9 AXIAL CERAMIC 0.022UF RH050F 223Z 50 ICP C201 166 131-510-9X DISK CERAMIC 150PF NPO K% 50 ICP C321...
  • Page 55 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 191 320-276-2Y COIL IFT DET R4251-AHK7-854462 L104 192 320-318-7Z COIL IFT Z73C-359 L301.302 193 320-380-2Y COIL IFT 27MHZ LKSZ73DO-X000205-0 ICP 194 320-576-3U COIL IFT 10.7MHZ MAX RX L103 195 320-580-6X COIL IFT 16.5MHZ 82PF COIL VCO...

  • Page 56: Voltage Chart

    Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: 130-315-6Y CHIP CERAMIC 0.0033UF GRM40 X7R332K 130-329-8Y CHIP CERAMIC 0.0039UF GRM40 X7R392K 135-626-1Y CHIP CERAMIC 560PF GRM40 COG561J C85.75 202-112-0Y TRANSISTOR STC2412G Q2B.2C 221-884-6 I.C VOICE ECHO HT8970 401-190-A P.C.B ECHO...
  • Page 57 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Q105 KTA1504 KTK211 Q106 KTC3880 KTK211 Q107 KRC104 KTC3880 Q108 KRA110 STC2412 Q109 Q211 KRC104 STC2412 12.8 12.8 Q110 Q212 KTC3880 KRC104 11.6 12.7 0.90 Q111 Q213 12.3 12.7...
  • Page 58 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Q207 Q411 STC2412 KTC3880 Q208 Q412 KTA1504 KTC3880 Q209 Q303 KRC104 2SC2314 Q304 Q214 13.1 13.1 RD16HHF1 KTB1367 10.8 12.3 12.6 Q2-B Q2-C STC2412 STC2412 HT8970 Created by: Approved by: Rev.No:...
  • Page 59 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: IC6 BU2630 IC4 24LLC02A IC2 KIA324 IC1 MC3361 Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 60 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: IC3 EFHP5830AD Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 61 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: DIODE D103 KDS184 KDS184 D104 KDS184 KDS184 D111 -0.4 KDS184 KDS226 D203 KDS184 KDS184 0 / 0.8 0 / 0.8 D402 KDS184 KDV251 D403 KDS184 KDV251 D407 KDS184 KDS184...
  • Page 62 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: SEMICONDUCTOR LEAD IDENTIFICATION AND IC INTERNAL CONNECTIONS INTERATED CIRCUITS IC9 : 24LLC02 EFHP5830AD 8 PIN BU2630F MC 3361 IC104 : UTC TDA2003 KDV251 DIODES 1N4004 .1N4148 .1N5232 1N5404 .1N5237 .
  • Page 63 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: RD16HHF1 KDS184 KIA324 Created by: Approved by: Rev.No: For Stage: Release Date: Page:...
  • Page 64 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev Date: M-550 Power Explode view Part list PART-NO. NAME & DESCRIPTION Q'TY REMARK 623-344 (+)TAPPING SCREW(BH)3X8-2S BLK SPK MTG 633-082 (+)TAP TITE SCREW BH3X6 BLK Cover MTG 633-152 (+)TAP TITE SCREW BH3X4-3S BLK...
  • Page 65 Model No: 3399 Title Drawring No: M-550 Power Customer : Rev,Date: Created by: Approved by: Rev.No: For Stage: Release Date: Page:...

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