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Intek MT-2020 Service Manual
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Intek MT-2020 Service Manual

Pmr 8 channel – lpd 69channel
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Model No:
INTEK
M
M
PMR 8 Channel – LPD 69Channel
Service Manual
Created by:
For Stage :
T
-
2
0
2
0
T
-
2
0
2
Approved by:
Release Date :
/
4
0
4
0
/
4
0
4
Rev. No:
Page 1 of 49
0
0

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Summary of Contents for Intek MT-2020

  • Page 1 Model No: INTEK PMR 8 Channel – LPD 69Channel Service Manual Created by: Approved by: Rev. No: For Stage : Release Date : Page 1 of 49...
  • Page 2 Model No: Drawing No: Table of Contents Pages Specifications Block Diagram Schematic Diagram Channel Frequency Charts Printed Circuit Board 9~12 Test and Alignment Procedure 13~17 Parts List 18~37 Semiconductor Voltage Chart 38~40 Semiconductor Lead Assignment and Block Diagram 41~45 Exploded View and Parts List 46~49 Created by: Approved by:...

  • Page 3: Specifications

    Adjacent Channel Rejection 60dB Inter Modulation Distortion 60dB Conducted Rx Spurious -54dB TRANSMITTER SPECIFICATIONS Output Power(Conducted) PMR Band 500Mw (MT-2020) / 1W,500mW (MT-4040D) LPD Band 10mW Max. Deviation r 2.5 KHz(MAX) r 5.0 KHz(MAX) Frequency Error 5ppm(-15~+55 ) Current Drain <500 mA...

  • Page 4: Block Diagram

    Model No: BLOCK DIAGRAM Created by: Approved by: Rev. No: For Stage : Release Date : Page 4 of 49...
  • Page 5 MT-2020D SCHEMATIC DIAGRAM PAGE 5 OF 49...
  • Page 6 MT-4040D SCHEMATIC DIAGRAM PAGE 6 OF 49...

  • Page 7: Channel Frequency Charts

    Model No: Drawing No: CHANNEL FREQUENCY CHARTS PMR Frequency Chart Channel Frequency (MHz) Channel Frequency (MHz) 446.00625Mhz 446.01875Mhz 446.03125Mhz 446.04375Mhz 446.05625Mhz 446.06875Mhz 446.08125Mhz 446.09375Mhz CTCSS Tone Frequency Chart FREQ.(Hz) FREQ. (Hz) FREQ. (Hz) 67.0 107.2 167.9 71.9 110.9 186.2 74.4 114.8 179.9 77.0...
  • Page 8 Model No: Drawing No: LPD Frequency Chart Channel Frequency (MHz) Channel Frequency (MHz) 433.07500 433.95000 4 3 3 . 1 0 0 0 0 4 3 3 . 9 7 5 0 0 4 3 3 . 1 2 5 0 0 4 3 4 .
  • Page 9 MT-2020D TOP PCB MAP PAGE 9 OF 49...
  • Page 10 MT-2020D BOTTOM PCB MAP PAGE 10 OF 49...
  • Page 11 MT-4040D TOP PCB MAP PAGE 11 OF 49...
  • Page 12 MT-4040D BOTTOM PCB MAP PAGE 12 OF 49...
  • Page 13 Model No: Drawing No: TEST AND ALIGNMENT PROCEDURE RECOMMENDED TEST EQUIPMENT 1.1 HP8920A,B Radio Communication Tester or equivalent 1.2 Fluke 187 Digital Voltmeter or equivalent 1.3 HPE3615A Power Supply or equivalent TEST PREPARATION 2.1 Connect a 6.0Vdc power supply to the positive battery terminal input point and the negative battery terminal input point (GND) into the negative terminal.
  • Page 14 Model No: Drawing No: TRANSMITTER FREQUENCY ALIGNMENT Equipment Setting: Filter : 50Hz~15kHz IF Filter : PMR 15kHz; LPD : 230kHz De-Emphasis : OFF Monitor : Pk-Pk/2 Input : 200mVrms; 1kHz Deviation 5.1 Set the unit/equipment for TX Test (SEE FIGURE 2). Set the unit at PMR Ch1. Press the PTT button so the unit will be in transmit mode.
  • Page 15 RECEIVER ALIGNMENT 8.1 Set the unit/equipment for RX Test (SEE FIGURE 3). Set the RF Generator level to –47dBm. The generator should be set for 1.5kHz deviation at 1kHz modulation. Set the Impedance at 8ohms. 8.2 Set Filter 1 to 25Hz and Filter 2 to 15kHz. 8.3 Set the unit at PMR Ch1.
  • Page 16 Model No: Drawing No: FIGURE 1 (VCO TEST) FIGURE 2 (TX TEST) Created by: Approved by: Rev. No: For Stage : Release Date : Page 16 of 49...
  • Page 17 Model No: Drawing No: FIGURE 3 (RX TEST) Created by: Approved by: Rev. No: For Stage : Release Date : Page 17 of 49...
  • Page 18 Model No: Drawing No: MT-2020 PARTS LIST 100P Capacitor Chip NP0 0402 100P Capacitor Chip NP0 0402 C100 0.1(X7R) Capacitor Chip X7R 0603 C101 Capacitor Chip Y5V 0402 C102 Capacitor Chip Y5V 0402 C103 100P Capacitor Chip NP0 0402 C104...
  • Page 19 Model No: Drawing No: C136 100P Capacitor Chip NP0 0402 C137 100P Capacitor Chip NP0 0402 C138 0.0027 Capacitor Chip X7R 0402 C139 Capacitor Chip NP0 0402 Capacitor Chip NP0 0402 C140 100P Capacitor Chip NP0 0402 C141 100P Capacitor Chip NP0 0402 C142 100P Capacitor Chip NP0 0402...
  • Page 20 Model No: Drawing No: 220P(X7R) Capacitor Chip X7R 0402 Capacitor Chip Y5V 0402 3P(03) Capacitor Ceramic 0603 NP0 C301 Capacitor Chip Y5V 0402 C302 Capacitor Chip NP0 0402 C303 Capacitor Chip NP0 0402 C304 Capacitor Chip NP0 0402 C305 220P Capacitor Chip NPO 0402 C306 Capacitor Chip NP0 0402...
  • Page 21 Model No: Drawing No: Capacitor Chip Y5V 0402 0.1(X7R) Capacitor Chip X7R 0603 470P Capacitor Chip X7R 0402 Capacitor Chip Y5V 0402 100P Capacitor Chip NP0 0402 Capacitor Chip Y5V 0402 100P Capacitor Chip NP0 0402 100P Capacitor Chip NP0 0402 6P(03) Capacitor Ceramic 0603 NP0 Capacitor Chip Y5V 0402...
  • Page 22 Model No: Drawing No: 680P Capacitor Chip X7R 0402 270P(NPO) Capacitor Chip NPO 0402 0.0022 Capacitor Chip X7R 0402 0.015 Capacitor Chip X7R 0402 Capacitor Chip Y5V 0402 Capacitor Chip Y5V 0402 Capacitor Chip Y5V 0402 220P(NPO) Capacitor Chip NPO 0402 Capacitor Chip Y5V 0402 0.015 Capacitor Chip X7R 0402...
  • Page 23 Model No: Drawing No: 5.6UH(05) Inductor Chip 0805 220NH(03) Inductor Chip 0603 18NH Inductor Chip 0402 0.3X1.4X6T(R) Inductor Air 100NH Inductor Chip 0402 0.3X1.0X3T(R) Inductor Air 100NH Inductor Chip 0402 10UH(05) Inductor Chip 0805 0.3X1.4X6T(R) Inductor Air L302 2.2UH(03) Inductor Chip 0603 L303 0.3X1.1X4T(R) Inductor Air...
  • Page 24 Model No: Drawing No: Q302 2SC4226 Transistor Chip KRC404E Transistor BRT 2SC4226 Transistor Chip KTA2014E Transistor Chip 2SC4226 Transistor Chip 2SC4083 Transistor Chip 180K 1% Resistor Chip 0402 1% Resistor Chip 0402 R100 Resistor Chip 0402 R101 100K Resistor Chip 0402 R102 Resistor Chip 0402 R103...
  • Page 25 Model No: Drawing No: Resistor Chip 0402 680K Resistor Chip 0402 R202 Resistor Chip 0402 R203 5.6K Resistor Chip 0402 R204 Resistor Chip 0402 R206 Resistor Chip 0402 R207 100K Resistor Chip 0402 Resistor Chip 0402 R214 Resistor Chip 0402 R216 Resistor Chip 0402 100K...
  • Page 26 Model No: Drawing No: 2.7K Resistor Chip 0402 220K Resistor Chip 0402 Resistor Chip 0402 560K Resistor Chip 0402 Resistor Chip 0402 2.2K Resistor Chip 0402 Resistor Chip 0402 1.8M Resistor Chip 0402 100K Resistor Chip 0402 220K Resistor Chip 0402 Resistor Chip 0402 100K Resistor Chip 0402...
  • Page 27 Model No: Drawing No: 470K 1% Resistor Chip 0402 1% Resistor Chip 0402 180K Resistor Chip 0402 8.2K Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402 220K Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402 220K Resistor Chip 0402 470K...
  • Page 28 Model No: Drawing No: MT-4040 PARTS LIST 100P Capacitor Chip NP0 0402 100P Capacitor Chip NP0 0402 C100 0.1(X7R) Capacitor Chip X7R 0603 C101 Capacitor Chip Y5V 0402 C102 Capacitor Chip Y5V 0402 C103 100P Capacitor Chip NP0 0402 C104 100P Capacitor Chip NP0 0402 C105...
  • Page 29 Model No: Drawing No: C137 100P Capacitor Chip NP0 0402 C138 0.0027 Capacitor Chip X7R 0402 C139 Capacitor Chip NP0 0402 Capacitor Chip NP0 0402 C140 100P Capacitor Chip NP0 0402 C141 100P Capacitor Chip NP0 0402 C142 100P Capacitor Chip NP0 0402 C143 100P Capacitor Chip NP0 0402...
  • Page 30 Model No: Drawing No: 100P Capacitor Chip NP0 0402 220P(X7R) Capacitor Chip X7R 0402 Capacitor Chip Y5V 0402 3P(03) Capacitor Ceramic 0603 NP0 C301 Capacitor Chip Y5V 0402 C302 Capacitor Chip NP0 0402 C303 Capacitor Chip NP0 0402 C304 Capacitor Chip NP0 0402 C305 220P Capacitor Chip NPO 0402...
  • Page 31 Model No: Drawing No: Capacitor Chip Y5V 0402 0.1(X7R) Capacitor Chip X7R 0603 470P Capacitor Chip X7R 0402 Capacitor Chip Y5V 0402 100P Capacitor Chip NP0 0402 Capacitor Chip Y5V 0402 100P Capacitor Chip NP0 0402 100P Capacitor Chip NP0 0402 22P(03) Capacitor Ceramic 0603 NP0 Capacitor Chip Y5V 0402...
  • Page 32 Model No: Drawing No: 7P(03) Capacitor Ceramic 0603 NP0 680P Capacitor Chip X7R 0402 270P(NPO) Capacitor Chip NPO 0402 0.0022 Capacitor Chip X7R 0402 0.015 Capacitor Chip X7R 0402 Capacitor Chip Y5V 0402 Capacitor Chip Y5V 0402 Capacitor Chip Y5V 0402 220P(NPO) Capacitor Chip NPO 0402 Capacitor Chip Y5V 0402...
  • Page 33 Model No: Drawing No: 5.6UH(05) Inductor Chip 0805 220NH(03) Inductor Chip 0603 18NH Inductor Chip 0402 0.3X1.4X6T(R) Inductor Air 100NH Inductor Chip 0402 0.3X1.0X3T(R) Inductor Air 10UH(05) Inductor Chip 0805 0.3X1.4X6T(R) Inductor Air L302 2.2UH(03) Inductor Chip 0603 L303 0.3X1.1X4T(R) Inductor Air 47NH Inductor Chip 0402...
  • Page 34 Model No: Drawing No: KRC405E Transistor BRT KRC404E Transistor BRT 2SC4226 Transistor Chip KTA2014E Transistor Chip 2SC4226 Transistor Chip 2SC4083 Transistor Chip 180K 1% Resistor Chip 0402 1% Resistor Chip 0402 R100 Resistor Chip 0402 R101 100K Resistor Chip 0402 R102 2.2M Resistor Chip 0402...
  • Page 35 Model No: Drawing No: 2.2K Resistor Chip 0402 Resistor Chip 0402 220K Resistor Chip 0402 470K Resistor Chip 0402 100K Resistor Chip 0402 2.7K Resistor Chip 0402 680K Resistor Chip 0402 R202 Resistor Chip 0402 R203 5.6K Resistor Chip 0402 R204 Resistor Chip 0402 R206...
  • Page 36 Model No: Drawing No: 100K Resistor Chip 0402 2.7K Resistor Chip 0402 8.2K Resistor Chip 0402 1.8M Resistor Chip 0402 33K 1% Resistor Chip 0402 1% 2.7K Resistor Chip 0402 220K Resistor Chip 0402 Resistor Chip 0402 560K Resistor Chip 0402 Resistor Chip 0402 2.2K Resistor Chip 0402...
  • Page 37 Model No: Drawing No: 180K Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402 470K Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402 470K 1% Resistor Chip 0402 1% Resistor Chip 0402 180K Resistor Chip 0402 8.2K Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402 Resistor Chip 0402...
  • Page 38 Model No: Drawing No: MT-4040 SEMICONDUCTOR VOLTAGE CHART 1. ICs 3.70 3.20 3.00 1.38 1.57 3.10 3.90 3.80 1.38 1.57 3.50 3.90 3.80 1.38 1.57 3.80 0.00 0.00 0.00 3.30 IC201 2.00 3.80 1.30 3.40 3.30 0.00 0.00 1.38 2.30 S5018 3.30 TB31202...
  • Page 39 Model No: Drawing No: 2. CPU 0.50 0.00 1.70 2.30 3.00 4.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 2.00 0.00 0.00 2.00 2.00 1.50 2.00 4.00 4.00 1.50 2.00 0.10 2.00 1.50 2.00 0.50 0.00 CPU1 1.50 2.00 1.50 0.00...
  • Page 40 Model No: Drawing No: 3. TRANSISTOR Q1(H/L) 0.00 0.00 0.00 0.00 0.2/0.2 0.00 3.50 3.20 NE5510279A KRC405E 5.60 5.60 0.00 0.00 4.00 4.00 0.00 0.00 2.70 1.10 0.20 0.00 KRA306E KRC404E 3.90 3.80 0.00 0.00 0.35 0.00 0.00 0.00 (PMR/LPD) 1.00 0.00 4.2/0.2...
  • Page 41 Model No: Drawing No: SEMICONDUCTOR LEAD ASSIGNMENT AND BLOCK DIAGRAM A. DIODE 1. KDS113 : VHF TUNER BAND SWITCH APPLICATION 2. KDS114E : VHF TUNER BAND SWITCH APPLICATION 3. KDS120 : ULTRA HIGH SPEED SWITCHING APPLICATION 4. KDS121 : ULTRA HIGH SPEED SWITCHING APPLICATION 5.
  • Page 42 Model No: Drawing No: B. TRANSISTOR KRA306E : SWITCHING APPLICATION. INTERFACE CIRCUIT AND DRIVER CIRCUIT APPLICATION. 2SC4083 : HIGH FREQUENCY AMPLIFIER. KRC404E : SWITCHING APPLICATION. INTERFACE CIRCUIT AND DRIVER CIRCUIT APPLICATION. KRC405E : SWITCHING APPLICATION. INTERFACE CIRCUIT AND DRIVER CIRCUIT APPLICATION. KRC401E : SWITCHING APPLICATION.
  • Page 43 Model No: Drawing No: B. IC AZ386 LOW VOLTAGE AUDIO AMPLIFIER 2 . XC61N2402MR STANDARD VOLTAGE DETECTOR Created by: Approved by: Rev. No: For Stage : Release Date : Page 43 of 49...
  • Page 44 Model No: Drawing No: S324 35018 Created by: Approved by: Rev. No: For Stage : Release Date : Page 44 of 49...
  • Page 45 Model No: Drawing No: TB32102 XC201 Created by: Approved by: Rev. No: For Stage : Release Date : Page 45 of 49...
  • Page 46 Model No: MT2020/4040D SERVICE MANUAL Drawing No: Title: Customer: Rev. Date: January 5, 2005 MT-2020D EXPLODED VIEW Created by: Approved by: Rev. No: For Stage : Release Date : Page 46 of 49...
  • Page 47 Model No: MT2020/4040D SERVICE MANUAL Drawing No: Title: Customer: Rev. Date: January 5, 2005 MT-2020D EXPLODED VIEW PARTS LIST Created by: Approved by: Rev. No: For Stage : Release Date : Page 47 of 49...
  • Page 48 Model No: MT2020/4040D SERVICE MANUAL Drawing No: Title: Customer: Rev. Date: January 5, 2005 MT-4040D EXPLODED VIEW Created by: Approved by: Rev. No: For Stage : Release Date : Page 48 of 49...
  • Page 49 Model No: MT2020/4040D SERVICE MANUAL Drawing No: Title: Customer: Rev. Date: January 5, 2005 MT-4040D EXPLODED VIEW PARTS LIST Created by: Approved by: Rev. No: For Stage : Release Date : Page 49 of 49...

This manual is also suitable for:

Mt-4040