Intek MT-4040, Service Manual

Page 1: ...Model No INTEK M MT T 2 20 02 20 0 4 40 04 40 0 PMR 8 Channel LPD 69Channel Service Manual Created by Approved by Rev No For Stage Release Date Page 1 of 49 ...

Page 2: ...6 Channel Frequency Charts 7 8 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 Rev No For Stage Release Date Page 2 of 49 ...

Page 3: ...7500 MHz 433 77500 MHz Frequency Stability 0 0005 Battery Life 30 hours typical Battery 4pcs AAA size Alkaline Battery or 4 8Vdc Ni MH Battery Pack Transmitter Receiver Switching Electrical Ambient Conditions Temperature Humidity 15 c 55 C 40 70 RECEIVER SPECIFICATIONS Sensitivity 120 12dB SINAD Audio Output 2Vrms w o load Frequency Response 300 Hz 2500 Hz Image Rejection 54dB Adjacent Channel Rej...

Page 4: ...Model No For Stage Release Date Page 4 of 49 r BLOCK DIAGRAM Created by Approved by Rev No ...

Page 5: ...MT 2020D SCHEMATIC DIAGRAM PAGE 5 OF 49 ...

Page 6: ...MT 4040D SCHEMATIC DIAGRAM PAGE 6 OF 49 ...

Page 7: ...e Frequency Chart NO FREQ Hz NO FREQ Hz NO FREQ Hz 1 67 0 14 107 2 27 167 9 2 71 9 15 110 9 28 186 2 3 74 4 16 114 8 29 179 9 4 77 0 17 118 8 30 186 2 5 79 7 18 123 0 31 192 8 6 82 5 19 127 3 32 203 5 7 85 4 20 131 8 33 210 7 8 88 5 21 136 5 34 218 1 9 91 5 22 141 3 35 225 7 10 94 8 23 146 2 36 233 6 11 97 4 24 151 4 37 241 8 12 100 0 25 156 7 38 250 3 13 103 5 26 162 2 Created by Approved by Rev ...

Page 8: ...14 433 40000 49 434 27500 15 433 42500 50 434 30000 16 433 45000 51 434 32500 17 433 47500 52 434 35000 18 433 50000 53 434 37500 19 433 52500 54 434 40000 20 433 55000 55 434 42500 21 433 57500 56 434 45000 22 433 60000 57 434 47500 23 433 62500 58 434 50000 24 433 65000 59 434 52500 25 433 67500 60 434 55000 26 433 70000 61 434 57500 27 433 72500 62 434 60000 28 433 75000 63 434 62500 29 433 775...

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: ...nd connect a digital voltmeter to TP1 VCO PD 4 2 Press the PTT Button so the unit is in transmit mode 4 3 Adjust L303 until the voltmeter reads around 3 1 3 2Vdc without VCO Plate L303 is located under the shieldcan Solder VCO Plate and let temperature stabilize Recheck TX VCO at Ch1 should be 2 8 3 1Vdc 4 4 Release the PTT switch so the unit will be in Receive mode 4 5 Observe the voltage at TP1 ...

Page 14: ...ER DEVIATION ADJUSTMENT 7 1 Set the unit at PMR Ch1 Connect an audio generator 600ohms to the microphone terminal pads The audio frequency should be set at 1kHz with a level of 200mVrms 7 2 Connect an FM Deviation Meter on the HP8920B on ANT point Set the monitor to read Pk to Pk 2 deviation Set Filter 1 to 50Hz and Filter 2 to 15kHz De emphasis should be set to Off 7 3 Press the PTT button so the...

Page 15: ...Bm at 12dB SINAD 9 SQUELCH THRESHOLD AND HYSTERISIS 9 1 Set unit same as 8 1 9 2 Set the RF Generator level until unit is at 2dB Sinad or unit is squelched RX Off 9 3 Slowly increase the RF Signal Generator level until the unit un squelches RX On confirm that the sensitivity is between 6 14dB SINAD PMR Band 10 VOX TEST 10 1 Set the unit into VOX Mode Level 2 The VOX icon should be displayed on the...

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: ... 1 C115 3P Capacitor Chip NP0 0402 1 C116 100P 03 Capacitor Ceramic 0603 NP0 1 C117 0 1 Capacitor Chip Y5V 0402 1 C118 100P Capacitor Chip NP0 0402 1 C119 100P Capacitor Chip NP0 0402 1 C12 1UF Capacitor Chip Y5V 0603 1 C120 100P Capacitor Chip NP0 0402 1 C121 100P Capacitor Chip NP0 0402 1 C122 1P Capacitor Chip NP0 0402 1 C123 100P Capacitor Chip NP0 0402 1 C125 0 001 Capacitor Chip X7R 0402 1 C...

Page 19: ...C20 1P Capacitor Chip NP0 0402 1 C207 100P Capacitor Chip NP0 0402 1 C208 33P Capacitor Chip NP0 0402 1 C209 33P Capacitor Chip NP0 0402 1 C21 10P Capacitor Chip NP0 0402 1 C211 0 1 Capacitor Chip Y5V 0402 1 C213 100P Capacitor Chip NP0 0402 1 C218 5P Capacitor Chip NP0 0402 1 C219 100P Capacitor Chip NP0 0402 1 C22 100P Capacitor Chip NP0 0402 1 C221 100P Capacitor Chip NP0 0402 1 C222 68P Capaci...

Page 20: ... 0 1 X7R Capacitor Chip X7R 0603 1 C33 0 1 Capacitor Chip Y5V 0402 1 C34 0 1 Capacitor Chip Y5V 0402 1 C35 100P Capacitor Chip NP0 0402 1 C36 0 33 Capacitor Chip Y5V 0603 1 C37 6P Capacitor Chip NP0 0402 1 C38 100P Capacitor Chip NP0 0402 1 C39 100P Capacitor Chip NP0 0402 1 C3A 4P 03 Capacitor Ceramic 0603 NP0 1 C4 4P Capacitor Chip NP0 0402 1 C40 100P Capacitor Chip NP0 0402 1 C41 15P Capacitor ...

Page 21: ...UF 3X5 Capacitor Elect 3X5 1 C7 100P Capacitor Chip NP0 0402 1 C70 220 6 3 6 3X7 Capacitor Elect 1 C71 0 1 Capacitor Chip Y5V 0402 1 C72 0 1 Capacitor Chip Y5V 0402 1 C73 100P Capacitor Chip NP0 0402 1 C74 100P Capacitor Chip NP0 0402 1 C75 0 1 Capacitor Chip Y5V 0402 1 C76 100P Capacitor Chip NP0 0402 1 C77 0 01 Capacitor Chip X7R 0402 1 C78 0 1 Capacitor Chip Y5V 0402 1 C79 100P Capacitor Chip N...

Page 22: ...STC3M10 T1 1 CX201 4 MHz X tal D4 00C 20pF HS 49 S 1 D1 KDS114E Diode Switching 1 D10 KDS114E Diode Switching 1 D13 KDS114E Diode Switching 1 D2 KDS121 CHIP DIODE 1 D3 KDS114E Diode Switching 1 D301 KDS114E Diode Switching 1 D302 KDV154B Diode Vari cap 1 D4 KDS115 USM Diode Chip 1 D5 KDS114E Diode Switching 1 D6 KDS113E Diode Switching 1 D7 KDS112 Diode Chip 1 D8 KDS112 Diode Chip 1 D9 KDS114E Dio...

Page 23: ... LCD GX XXXXX 1 LED1 LTST S320GKT Diode LED SMT 1 LED2 DUAL_LED KPBA 3010ESGC 1 PCB1 PCB 4 Layer for MT2020D 1 Q1 THN6601B Transistor Chip 1 Q10 KRA306E Transistor BRT 1 Q11 BFQ67W Transistor Chip 1 Q12 KRC404E Transistor BRT 1 Q13 KTA1505 Transistor BRT 1 Q14 KRA306E Transistor BRT 1 Q15 KRA306E Transistor BRT 1 Q16 KRA226S Transistor BRT 1 Q17 KRC405E Transistor BRT 1 Q18 KRA226S Transistor BRT ...

Page 24: ... 560 Resistor Chip 0402 1 R110 4 7K Resistor Chip 0402 1 R111 220K Resistor Chip 0402 1 R112 4 7K Resistor Chip 0402 1 R113 4 7K Resistor Chip 0402 1 R114 4 7M Resistor Chip 0402 1 R115 100K Resistor Chip 0402 1 R116 100K Resistor Chip 0402 1 R117 100K Resistor Chip 0402 1 R118 100K Resistor Chip 0402 1 R119 10K Resistor Chip 0402 1 R12 120K Resistor Chip 0402 1 R120 33K Resistor Chip 0402 1 R121 ...

Page 25: ...K Resistor Chip 0402 1 R28 6 8K Resistor Chip 0402 1 R29 2 2 Resistor Chip 0402 1 R3 2 2K Resistor Chip 0402 1 R30 91K Resistor Chip 0402 1 R301 10 Resistor Chip 0402 1 R302 1 5K Resistor Chip 0402 1 R303 3 3K Resistor Chip 0402 1 R304 4 7K Resistor Chip 0402 1 R306 180 Resistor Chip 0402 1 R307 33 Resistor Chip 0402 1 R309 6 8K Resistor Chip 0402 1 R31 270K Resistor Chip 0402 1 R311 12K Resistor ...

Page 26: ... 0402 1 R58 5 6K Resistor Chip 0402 1 R59 10K Resistor Chip 0402 1 R6 3 3K Resistor Chip 0402 1 R60 27K Resistor Chip 0402 1 R61 27K Resistor Chip 0402 1 R62 15K Resistor Chip 0402 1 R63 470K Resistor Chip 0402 1 R64 2 2K Resistor Chip 0402 1 R65 10 Resistor Chip 0402 1 R66 47K Resistor Chip 0402 1 R67 470K Resistor Chip 0402 1 R68 100 TM NSM3101J280J3Z 1 R69 2 7K Resistor Chip 0402 1 R7 820K Resi...

Page 27: ...1 R9 4 7K Resistor Chip 0402 1 R90 120K Resistor Chip 0402 1 R91 10K Resistor Chip 0402 1 R92 10K Resistor Chip 0402 1 R93 100K Resistor Chip 0402 1 R94 47 Resistor Chip 0402 1 R96 680 Resistor Chip 0402 1 R97 220K Resistor Chip 0402 1 R98 470K Resistor Chip 0402 1 R99 6 8K Resistor Chip 0402 1 RV1 220KB Semi fixed resistor 3 dia 1 RV2 4 7KB Semi fixed resistor 3 dia 1 SF1 439MHz HDF 440DS SAW fil...

Page 28: ... 1 C115 3P Capacitor Chip NP0 0402 1 C116 100P 03 Capacitor Ceramic 0603 NP0 1 C117 0 1 Capacitor Chip Y5V 0402 1 C118 100P Capacitor Chip NP0 0402 1 C119 100P Capacitor Chip NP0 0402 1 C12 1UF Capacitor Chip Y5V 0603 1 C120 100P Capacitor Chip NP0 0402 1 C121 100P Capacitor Chip NP0 0402 1 C122 1P Capacitor Chip NP0 0402 1 C125 0 001 Capacitor Chip X7R 0402 1 C126 100P Capacitor Chip NP0 0402 1 C...

Page 29: ...3P 03 Capacitor Ceramic 0603 NP0 1 C20 1P Capacitor Chip NP0 0402 1 C207 100P Capacitor Chip NP0 0402 1 C208 33P Capacitor Chip NP0 0402 1 C209 33P Capacitor Chip NP0 0402 1 C21 24P Capacitor Chip NP0 0402 1 C211 0 1 Capacitor Chip Y5V 0402 1 C213 100P Capacitor Chip NP0 0402 1 C218 5P Capacitor Chip NP0 0402 1 C219 100P Capacitor Chip NP0 0402 1 C22 100P Capacitor Chip NP0 0402 1 C221 100P Capaci...

Page 30: ... 0 068 Capacitor Chip Y5V 0402 1 C32 0 1 X7R Capacitor Chip X7R 0603 1 C33 0 1 Capacitor Chip Y5V 0402 1 C34 0 1 Capacitor Chip Y5V 0402 1 C35 100P Capacitor Chip NP0 0402 1 C36 0 33 Capacitor Chip Y5V 0603 1 C37 6P Capacitor Chip NP0 0402 1 C39 100P Capacitor Chip NP0 0402 1 C3A 4P 03 Capacitor Ceramic 0603 NP0 1 C4 4P Capacitor Chip NP0 0402 1 C40 100P Capacitor Chip NP0 0402 1 C41 15P Capacitor...

Page 31: ...10UF 3X5 Capacitor Elect 3X5 1 C7 100P Capacitor Chip NP0 0402 1 C70 220 6 3 6 3X7 Capacitor Elect 1 C71 0 1 Capacitor Chip Y5V 0402 1 C72 0 1 Capacitor Chip Y5V 0402 1 C73 100P Capacitor Chip NP0 0402 1 C74 100P Capacitor Chip NP0 0402 1 C75 0 1 Capacitor Chip Y5V 0402 1 C76 100P Capacitor Chip NP0 0402 1 C77 0 01 Capacitor Chip X7R 0402 1 C78 0 1 Capacitor Chip Y5V 0402 1 C79 100P Capacitor Chip...

Page 32: ...C CPU 1 CT201 10P Trimmer 3 dia STC3M10 T1 1 CX201 4 MHz X tal D4 00C 20pF HS 49 S 1 D1 KDS114E Diode Switching 1 D10 KDS114E Diode Switching 1 D13 KDS114E Diode Switching 1 D2 KDS121 CHIP DIODE 1 D3 KDS114E Diode Switching 1 D301 KDS114E Diode Switching 1 D302 KDV154B Diode Vari cap 1 D5 KDS114E Diode Switching 1 D6 KDS113E Diode Switching 1 D7 KDS112 Diode Chip 1 D8 KDS112 Diode Chip 1 D9 KDS114...

Page 33: ...KT Diode LED SMT 1 LED2 DUAL_LED KPBA 3010ESGC 1 PCB1 PCB 4 Layer for MT4040D 1 Q1 NE5510279A Transistor Chip 1 Q10 KRA306E Transistor BRT 1 Q11 BFQ67W Transistor Chip 1 Q12 KRC404E Transistor BRT 1 Q13 KTA1505S Transistor BRT 1 Q14 KRA306E Transistor BRT 1 Q16 KRA226S Transistor BRT 1 Q17 KRC405E Transistor BRT 1 Q18 KRA226S Transistor BRT 1 Q19 KRC401E Transistor BRT 1 Q2 BFQ67W Transistor Chip ...

Page 34: ...560 Resistor Chip 0402 1 R110 4 7K Resistor Chip 0402 1 R111 220K Resistor Chip 0402 1 R112 4 7K Resistor Chip 0402 1 R113 4 7K Resistor Chip 0402 1 R114 4 7M Resistor Chip 0402 1 R115 100K Resistor Chip 0402 1 R116 100K Resistor Chip 0402 1 R117 100K Resistor Chip 0402 1 R118 100K Resistor Chip 0402 1 R119 10K Resistor Chip 0402 1 R12 120K Resistor Chip 0402 1 R120 33K Resistor Chip 0402 1 R121 1...

Page 35: ...226 22 Resistor Chip 0402 1 R23 2 2K Resistor Chip 0402 1 R24 100 03 Resistor Chip 0603 5 1 R25 3 3K Resistor Chip 0402 1 R26 33K Resistor Chip 0402 1 R27 33K Resistor Chip 0402 1 R28 6 8K Resistor Chip 0402 1 R29 2 2 Resistor Chip 0402 1 R3 2 2K Resistor Chip 0402 1 R30 91K Resistor Chip 0402 1 R301 10 Resistor Chip 0402 1 R302 1 5K Resistor Chip 0402 1 R303 3 3K Resistor Chip 0402 1 R304 4 7K Re...

Page 36: ...0402 1 R52 4 7K Resistor Chip 0402 1 R53 1 5K Resistor Chip 0402 1 R54 22K Resistor Chip 0402 1 R55 2 7K Resistor Chip 0402 1 R56 4 7K Resistor Chip 0402 1 R57 2 2K Resistor Chip 0402 1 R58 5 6K Resistor Chip 0402 1 R59 10K Resistor Chip 0402 1 R6 3 3K Resistor Chip 0402 1 R60 27K Resistor Chip 0402 1 R61 27K Resistor Chip 0402 1 R62 15K Resistor Chip 0402 1 R63 470K Resistor Chip 0402 1 R64 2 2K ...

Page 37: ... R87 150 Resistor Chip 0402 1 R88 220K Resistor Chip 0402 1 R89 470K Resistor Chip 0402 1 R9 4 7K Resistor Chip 0402 1 R90 120K Resistor Chip 0402 1 R91 10K Resistor Chip 0402 1 R92 10K Resistor Chip 0402 1 R93 100K Resistor Chip 0402 1 R94 47 Resistor Chip 0402 1 R96 680 Resistor Chip 0402 1 R97 220K Resistor Chip 0402 1 R98 470K Resistor Chip 0402 1 R99 3 9K Resistor Chip 0402 1 RV1 220KB Semi f...

Page 38: ...1 38 1 52 11 1 45 11 3 70 3 70 11 0 00 0 00 12 0 52 12 4 00 0 39 12 1 38 1 52 13 3 60 13 0 00 0 00 13 1 38 1 52 14 0 00 14 0 30 0 00 14 1 38 1 52 15 0 00 15 3 80 3 80 16 1 68 16 3 30 3 20 PIN TX RX IC 2 RX PIN 1 1 39 1 32 1 1 30 1 4 00 2 1 39 1 32 2 0 00 2 0 00 3 1 39 1 32 3 0 00 3 6 00 4 3 80 0 00 4 0 00 4 6 00 IC4 5 1 40 1 30 IC2 5 2 70 IC3 5 0 00 6 1 40 1 30 6 6 00 6 0 00 S324 7 1 40 1 30 UTC 7...

Page 39: ... 20 2 00 0 00 46 3 80 3 80 21 NC NC 47 4 00 2 00 22 NC NC 48 0 20 0 00 23 NC NC 49 4 00 0 00 24 2 00 2 50 50 0 60 0 00 25 1 00 1 30 51 4 00 4 00 26 0 80 1 00 52 1 50 4 00 3 DIODE PIN TX RX PIN TX RX D1 A 0 90 0 00 D9 A 0 00 3 80 KDS114E K 0 00 0 00 KDS114E K 0 00 3 30 1 20 0 00 D5 0 80 0 60 KDS114E K 0 30 0 10 0 60 0 00 KDS114E K D2 K 6 00 6 00 D6 A 4 00 0 4 KDS121 A1 0 00 0 00 KDS113E K1 2 00 4 0...

Page 40: ...3 90 C 0 00 3 80 Q22 E 0 00 0 00 Q3 H L E 0 00 0 00 KTC4075E B 0 00 0 50 KRC405E B 0 15 3 7 0 3 5 C 0 00 1 40 C 0 1 0 2 0 00 Q16 E 6 00 6 00 Q301 E 2 80 2 50 KRA226S B 6 00 0 10 2SC4226 B 3 30 3 20 C 0 60 6 00 C 3 60 3 50 Q17 E 0 00 0 00 Q302 E 1 10 0 90 KRC405E B 0 00 3 80 2SC4226 B 1 50 1 60 C 0 35 0 00 C 3 00 1 60 Q18 E 4 30 4 00 Q4 H L E 0 00 0 00 KRA226S B 0 40 0 10 KRC405E B 0 12 3 56 0 3 5 ...

Page 41: ...F 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 KDV154B VHF UHF TUNER AFC VCO FOR UHF BAND RADIO Created by Approved by Rev No For Stage Release Date Page 41 of 49 ...

Page 42: ...SWITCHING APPLICATION INTERFACE CIRCUIT AND DRIVER CIRCUIT APPLICATION 5 KRC401E SWITCHING APPLICATION INTERFACE CIRCUIT AND DRIVER CIRCUIT APPLICATION 6 KRA226S HIGH CURRENT SWITCHING APPLICATION 7 KTA1505S GENERAL PURPOSE SWITCHING APPLICATION 8 KTA2014E GENERAL PURPOSE SWITCHING APPLICATION 9 2SC4226 HIGH FREQUENCY LOW NOISE AMPLIFIER 10 NE5510279A SILICON POWER MOS FET Created by Approved by R...

Page 43: ...Model No Drawing No B IC 1 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 2 S324 3 35018 Created by Approved by Rev No For Stage Release Date Page 44 of 49 ...

Page 45: ...Model No Drawing No 4 TB32102 5 XC201 Created by Approved by Rev No For Stage Release Date Page 45 of 49 ...

Page 46: ...Model No Drawing No Customer Title MT2020 4040D SERVICE MANUAL Rev Date January 5 2005 For Stage Release Date Page 46 of 49 MT 2020D EXPLODED VIEW Created by Approved by Rev No ...

Page 47: ...Model No Drawing No Customer Title MT2020 4040D SERVICE MANUAL Rev Date January 5 2005 Created by Approved by Rev No For Stage Release Date Page 47 of 49 MT 2020D EXPLODED VIEW PARTS LIST ...

Page 48: ...Model No Drawing No Customer Title MT2020 4040D SERVICE MANUAL Rev Date January 5 2005 Created by Approved by Rev No For Stage Release Date Page 48 of 49 MT 4040D EXPLODED VIEW ...

Page 49: ...Model No Drawing No Customer Title MT2020 4040D SERVICE MANUAL Rev Date January 5 2005 Created by Approved by Rev No For Stage Release Date Page 49 of 49 MT 4040D EXPLODED VIEW PARTS LIST ...