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Model No: M150 Plus

Customer: INTEK Rev No: A

M-150 Plus

Service Manual

Содержание M-150 Plus

Страница 1: ...Model No M150 Plus Customer INTEK Rev No A 1 M 150 Plus Service Manual ...

Страница 2: ...er INTEK Rev No A 2 Table of Contents Page 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 ...

Страница 3: ...ystem Dual Conversion Super Heterodyne Intermediate Frequency 1 st IF 10 695 MHz 2 nd IF 455 MHZ Sensitivity 0 5 µV for 20 db SINAD in FM mode Audio Distortion Less Than 8 1 KHz ImageRejection 65 dB Adjacent ChannelRejection 65 dB Signal Noise Ratio 45 dB Current Drain at standby 325 mA 3 TRANSMITTER Output Power 4W 13 2 V DC Modulation FM 1 8 KHz 0 2 KHz Frequency response From 400 Hz to 2 5 KHz ...

Страница 4: ...r wait until signals cease on your channel Then rotate the squelch control knob clockwise to a point where the background noise disappears Note When the squelch is set properly the speaker will remain quiet until a signal is received In order to receive weak signals do not set the squelch too high Adjust the volume to the desired listening level To Transmit Press and hold the push to talk button S...

Страница 5: ...lightly less RV4 and corresponding three transistors control supply voltage of RF amplifier and other circuits Tune all the trimmer parts for maximum indication of RF power meter and adjust RV4 to make 4 w indication of RF power meter The tuning is adjusted so that the actual power is from 3 5 to 4 0 W There are no other additional controls for adjusting the TX output power D Modulation Control a ...

Страница 6: ...20 Then we can see the recovered audio signals on Pin 9 for FM of IC7 With the amplitude of recovered signals Q10 serves as an audio amplifier For AM signal Will be pass filter CF1 and induced to Q6 Q7 respective and detected to voice signal by D5 TROUBLESHOOTING HINTS Symptom Probable Cause Remedy Unit does not work at all Defective power switch VR1 Blown fuse Broken DC power cord Defective IC5 R...

Страница 7: ...mponents LCD meter does not work Defective D11 D22 Defective IC5 Defective RV2 RV6 Replace Replace Replace LCD display does not work Defective RED wire fuse Defective IC5 Replace Replace Channel selector does not work Defective IC5 Replace EMG CH9 19 does not work Defective EMG SW Defective IC5 Replace Replace TEST EQUIPMENT SETUP A TX test equipment setup Spectrum Power Analyzer Supply Modulation...

Страница 8: ...E Check CH01A 0 8V CH14D 3 8V CH15D 0 8V CH21G 3 8V CH22G 0 8V CH40L 3 8V 3 Turn to AM mode and repeat above item 2 4 2 RX Section Alignment FM and AM 4 2 1 Audio Distortion Adjust 1 UUT set to FM mode CH19 output of RF signal generator connect to TP2 Audio dummy load connect to EXT Speaker 8Ω load 2 Set RF S S G Freq 10 695MHz Mod 1 2KHz Fmod 1KHz Output level 1mV 3 Squelch Volume set to minimum ...

Страница 9: ...Hz Output level 0 5uV 9 Adjust the volume control for 2V output on distortion meter read 10 Adjust L2 L3 for more than 12dB at SINAD meter 11 Repeat as needed Check all channels sensitivity must met the D T S specifications 4 2 3 T Squelch Sensitivity Adjust 1 UUT set to AM CH22 output of RF signal generator to the antenna input terminal 2 Set RF S S G Freq 27 225MHz Mod 60 Fmod 1KHz Output level ...

Страница 10: ...set off RF Gain set to maximum Squelch set to minimum ANL set off Noise generater pulse 1us width 100ms output level 1 0Vrms set to on and connect to the antenna socket with network combinator 8 Set audio output level for 0 8Vrms for 0dB reference RF S S G MOD turn off set ANL to ON the audio output should be drop 6dB or below 4 3 TX Section Alignment 4 3 1 TX output power and Frequency Alignment ...

Страница 11: ...udio distortion meter for Compander On and Off 4 3 4 PA audio output checking 1 The UUT enter PA mode after long press the ANL key Volume set maximum position for M 150 and the MIC gain set maximum position for M 760 1KHz audio input 2 Turn to TX mode the PA output must meet the DTS 5 0 TEST MODE DESCRIPTION Model Selection and International Band Select 1 For M 760 Press both keys of ANL Scan sync...

Страница 12: ...or DN keys 4 shortly press the EMG key to confirm 5 display will show the selected band ID code for 2 3 seconds then it will show the channel number 6 0 Factory Setting of Band for Shipment FACTORY SETTING All radios must be shipped from factory set as follows BAND SETTING EUROPEAN BANDS ONLY RADIO SWITCH ON CE BAND Step Setting Connection Adjuster Adjust for 1 Frequency adjustment MIC Receive Vol...

Страница 13: ...tector The VCO output is divided by a programmable divider and fed to other side of the phase detector of IC4 The feedback loop is closed by passing the phase detector output through an active low pass filter and using the output to control the VCO frequency through varicap diode D402 D403 Under locked conditions both of phase detector input signal must be indential at 5 KHz The VCO frequency is t...

Страница 14: ...150 Plus Customer INTEK Rev No A 14 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 ...

Страница 15: ...ase 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 E Transmitter Receiver buffer AMP Output signal of Q408 is fed into buffer AMP Q411 F Switching of tuning capacitor in VCO The VCO circuit must tune with a wide rang of frequencies 25 610MHz to 30 15MH...

Страница 16: ...ogrammable divider divide ratio THEN Fvco N X Fr From which it can be seen the percentage error in Ft is the same as the percentage error in Fo The stability of the crystal oscillator is determined primarily by the crystal itself and having lesser deviation by the active and passive components of the oscillator The choice of crystal and component is such that the required frequency stability is ma...

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Страница 24: ...AM FM 4W I2 Germany 80CH FM 4W 12CH AM 1W DE Germany 40CH FM 4W 12CH AM 1W D2 Europe 40CH FM 4W 40CH AM 1W EU CEPT 40CH FM 4W CE England 40CH FM 4W English Frequencies EC 40CH FM 4W CEPT U Poland 40CH AM FM 4W Polish Frequencies 5kHz PL Illegal Bands Russia 400CH AM FM 4W RU Poland 400CH AM FM 4W Polish Frequencies 5kHz PO Private Channels AM FM 4W PC ...

Страница 25: ...7 085 AM FM 12 27 105 AM FM 13 27 115 AM FM 14 27 125 AM FM 15 27 135 AM FM 16 27 155 AM FM 17 27 165 AM FM 18 27 175 AM FM 19 27 185 AM FM 20 27 205 AM FM 21 27 215 AM FM 22 27 225 AM FM 23 27 255 AM FM 24 27 235 AM FM 25 27 245 AM FM 26 27 265 AM FM 27 27 275 AM FM 28 27 285 AM FM 29 27 295 AM FM 30 27 305 AM FM 31 27 315 AM FM 32 27 325 AM FM 33 27 335 AM FM 34 27 345 AM FM 35 27 355 AM FM 36 2...

Страница 26: ...7 065 AM FM 10 27 075 AM FM 11 27 085 AM FM 12 27 105 AM FM 13 27 115 AM FM 14 27 125 AM FM 15 27 135 AM FM 16 27 155 AM FM 17 27 165 AM FM 18 27 175 AM FM 19 27 185 AM FM 20 27 205 AM FM 21 27 215 AM FM 22 27 225 AM FM 23 27 255 AM FM 24 27 245 AM FM 25 27 265 AM FM 26 26 875 AM FM 27 26 885 AM FM 28 26 895 AM FM 29 26 905 AM FM 30 26 915 AM FM 31 26 925 AM FM 32 26 935 AM FM 33 26 945 AM FM 34 2...

Страница 27: ...5 FM 14 27 125 AM FM 54 26 695 FM 15 27 135 AM FM 55 26 705 FM 16 27 155 FM 56 26 715 FM 17 27 165 FM 57 26 725 FM 18 27 175 FM 58 26 735 FM 19 27 185 FM 59 26 745 FM 20 27 205 FM 60 26 755 FM 21 27 215 FM 61 26 765 FM 22 27 225 FM 62 26 775 FM 23 27 255 FM 63 26 785 FM 24 27 235 FM 64 26 795 FM 25 27 245 FM 65 26 805 FM 26 27 265 FM 66 26 815 FM 27 27 275 FM 67 26 825 FM 28 27 285 FM 68 26 835 FM...

Страница 28: ...FM 9 27 065 AM FM 10 27 075 AM FM 11 27 085 AM FM 12 27 105 AM FM 13 27 115 AM FM 14 27 125 AM FM 15 27 135 AM FM 16 27 155 FM 17 27 165 FM 18 27 175 FM 19 27 185 FM 20 27 205 FM 21 27 215 FM 22 27 225 FM 23 27 255 FM 24 27 235 FM 25 27 245 FM 26 27 265 FM 27 27 275 FM 28 27 285 FM 29 27 295 FM 30 27 305 FM 31 27 315 FM 32 27 325 FM 33 27 335 FM 34 27 345 FM 35 27 355 FM 36 27 365 FM 37 27 375 FM ...

Страница 29: ...11 27 085 AM FM 12 27 105 AM FM 13 27 115 AM FM 14 27 125 AM FM 15 27 135 AM FM 16 27 155 AM FM 17 27 165 AM FM 18 27 175 AM FM 19 27 185 AM FM 20 27 205 AM FM 21 27 215 AM FM 22 27 225 AM FM 23 27 255 AM FM 24 27 235 AM FM 25 27 245 AM FM 26 27 265 AM FM 27 27 275 AM FM 28 27 285 AM FM 29 27 295 AM FM 30 27 305 AM FM 31 27 315 AM FM 32 27 325 AM FM 33 27 335 AM FM 34 27 345 AM FM 35 27 355 AM FM ...

Страница 30: ... 27 065 FM 10 27 075 FM 11 27 085 FM 12 27 105 FM 13 27 115 FM 14 27 125 FM 15 27 135 FM 16 27 155 FM 17 27 165 FM 18 27 175 FM 19 27 185 FM 20 27 205 FM 21 27 215 FM 22 27 225 FM 23 27 255 FM 24 27 235 FM 25 27 245 FM 26 27 265 FM 27 27 275 FM 28 27 285 FM 29 27 295 FM 30 27 305 FM 31 27 315 FM 32 27 325 FM 33 27 335 FM 34 27 345 FM 35 27 355 FM 36 27 365 FM 37 27 375 FM 38 27 385 FM 39 27 395 FM...

Страница 31: ...25 FM 14 27 125 FM 15 27 74125 FM 15 27 135 FM 16 27 75125 FM 16 27 155 FM 17 27 76125 FM 17 27 165 FM 18 27 77125 FM 18 27 175 FM 19 27 78125 FM 19 27 185 FM 20 27 79125 FM 20 27 205 FM 21 27 80125 FM 21 27 215 FM 22 27 81125 FM 22 27 225 FM 23 27 82125 FM 23 27 255 FM 24 27 83125 FM 24 27 235 FM 25 27 84125 FM 25 27 245 FM 26 27 85125 FM 26 27 265 FM 27 27 86125 FM 27 27 275 FM 28 27 87125 FM 28...

Страница 32: ...0 AM FM 11 27 080 AM FM 12 27 100 AM FM 13 27 110 AM FM 14 27 120 AM FM 15 27 130 AM FM 16 27 150 AM FM 17 27 160 AM FM 18 27 170 AM FM 19 27 180 AM FM 20 27 200 AM FM 21 27 210 AM FM 22 27 220 AM FM 23 27 250 AM FM 24 27 230 AM FM 25 27 240 AM FM 26 27 260 AM FM 27 27 270 AM FM 28 27 280 AM FM 29 27 290 AM FM 30 27 300 AM FM 31 27 310 AM FM 32 27 320 AM FM 33 27 330 AM FM 34 27 340 AM FM 35 27 35...

Страница 33: ...U CAP ELECT 16V M 22UF 2 C134 C158 17 KEC E227ERMU CAP ELECT 16V M 220UF 3 C120 C155 C60 18 KEC E227FRMU CAP ELECT 25V M 220UF 1 C102 19 KEC E476ERMKS CAP ELECT 16V M 47UF 1 C157 20 KEC E476ERMU CAP ELECT 16V M 47UF 2 C59 C144 21 KEC E477ERMU CAP ELECT 16V M 470UF 2 C94 C185 22 KEC TR031 A CAP TRIMMER JTC06 E300 30PF 1 CT1 23 KECF 0070 A CRYSTAL FILTER 10 695MHZ QUARTZ 1 XF1 24 KECF 0216 CERAMIC F...

Страница 34: ...OKE EI19KY 226 1 CH1 66 KETR 067 BW 0903 BAN WO TRA NSFORMER 1 T1 67 KEX 0318 CRYSTAL 10 24DMHZ CL 30PF 1 X1 68 KEX 0474 CRTAL 4MZ 20PPM HC 1 X2 69 M 760B1S BASE MAIN PCB SMT 1 70 M 760B1SB BASE MAIN PCB SMT BOTTOM 1 71 KCC 102FRJNPOB CAP CER CHIP 50V CH J 0 001UF 1 C67 72 KCC 103FRKBB CAP CER CHIP 50V B K 0 01UF 11 C3 C61 C83 C99 C126 C140 C8 C32 C82 C100 C132 73 KCC 104DRKBB CAP CER CHIP 16V B K...

Страница 35: ...F 8 C25 C45 C47 C91 C106 C167C170 114 KCC 103FRKBB CAP CER CHIP 50V B K 0 01UF 27 C19 C20 C24 C27 C34 C36 C58 C110 C135 C145 C146 C120A C173 C203 C212 C39 C149 C503 C175 C119 C86 C89 C97 C63 C424 C174 C427 C84 115 KCC 104DRKBB CAP CER CHIP 16V B K 0 1uF 24 C15 C21 C26 C28 C49 C55 C57 C136 C147 C153 C166 C169 C148 C172 C180 C192 C127 C130 C118 C207 C21 C131 C208 C209 116 KCC 105BRZFB CAP CER CHIP 1...

Страница 36: ...172 R175 R176 150 KCR 102B RES CHIP 1 16W 1K 16 R3 R4 R35 R69 R80 R99 R114 R412 R416 R207 R91 R163 R156 R157 R197 R129 151 KCR 103B RES CHIP 1 16W 10K 22 R9 R23 R53 R82 R124 R134 R211 R182 R184 R185 R193 R187 R165 R166 R41 R192 R191 R137 R173 R208 R132 R177 152 KCR 104B RES CHIP 1 16W 100K 15 R46 R77 R78 R79 R90 R96 R118 R148 R32 R103 R210 R409 R411 R406 R415 153 KCR 106B RES CHIP 1 16W 10 M 1 R12...

Страница 37: ...CR 823B RES CHIP 1 16W 82 K 2 R31 R167 196 KCR 824B RES CHIP 1 16W 82 0K 1 R25 197 KCT KTA1504S TR CHIP PNP KTA15 04S SOT 23 6 Q8 Q11 Q13 Q19 Q22 Q40 198 KCT KTC3875S TR CHIP NPN KTC38 75S GR 5 Q1 Q54 Q55 Q56 Q47 199 KCT KTC3880S TR CHIP NPN KTC38 80S SOT 23 7 Q6 Q7 Q15 Q43 Q408 Q411 Q412 200 KCT MMBTRC101SS TRANSISTOR MMBTRC1 01SS SOT23 3 Q404 Q405 Q406 201 KCT MMBTRC102SS TRANSISTOR MMBTRC1 02SS...

Страница 38: ... R333 R334 R341 230 KEPC 1050 A PCB 149 44 1 6MM D S FR 4 1 231 KEPC 1054 A PCB 65 25 1 6MM SS 94V 0 1 232 KER D103B502A RD12BF 20C2 38 5K 042 1 ALPHA 1 233 KER 103RD123SF RD123SF 20BC 29K B 10K 1002 ALP 1 234 KER 503RD123SF RD123SF 20BC 29K A 50K 1002 ALPH 1 235 KEJ 513 MIC PLUG 6PIN N 16 6P QIINGXING 1 236 KESP 041 C MIC ELEC CI034 1 237 KESW 018 1 SWITCH PUSH 2P2T P S 22I01 RP 1 SW1 238 KETC 15...

Страница 39: ...E 0 0 Q37 G 0 0 2SK211 Y C 0 0 8 MMBTRC104SS S 0 5 7 9 B 0 6 7 D 2 8 0 Q14 E 1 2 0 Q40 G 0 7 0 9 KCT3880S C 8 0 0 KTA1504S S 0 0 B 2 0 0 D 0 6 1 Q16 E 0 0 E 2SC2314F C 8 5 3 0 C B 1 0 0 B Q17 E 0 0 E C2078 C 13 2 2 0 C B 13 0 0 B Q18 E 0 7 3 E MMBTSC3265Y C 0 0 C B 0 5 7 9 B Q19 E 8 1 8 10 E KTA1504S C 7 9 0 C B 7 3 7 9 B Q28 E 6 1 6 1 E MMBTSC3265Y C 8 1 8 1 C B 6 8 6 8 B ...

Страница 40: ... 1 K D5 A 0 0 A 1K261 K 0 0 K D6 A 10 6 2 8 A 1N4004 K 9 7 2 8 K D10 A 0 0 A 1N4004 K 12 8 13 2 K D14 A 7 9 0 A KDS160 K 7 2 0 6 K D16 A 2 5 0 A KDS160 K 2 2 2 2 K D19 A 7 9 0 A KDS160 K 7 3 0 K IC4 TB31202F PIN TX RX PIN TX RX 1 4 2 4 2 9 3 6 3 6 2 4 7 4 7 10 4 0 4 0 3 1 0 1 7 11 4 5 4 5 4 0 0 12 0 7 0 7 5 5 0 5 0 13 0 0 6 0 0 14 0 0 7 0 0 15 4 7 4 7 8 0 0 16 4 1 4 1 ...

Страница 41: ... 5 3 7 3 7 12 0 0 6 3 9 3 9 13 0 1 7 7 3 9 3 9 14 0 0 IC8 TDA2003 PIN TX RX PIN TX RX 1 1 0 1 0 4 6 3 6 3 2 0 8 0 8 5 13 2 13 2 3 0 0 IC6 KIA78L05F PIN TX RX PIN TX RX 1 5 5 3 13 2 13 2 2 0 0 IC7 SL5019 PIN TX RX PIN TX RX 1 0 5 0 9 0 1 6 2 0 4 5 10 0 0 3 0 4 5 11 0 5 0 4 0 4 5 12 0 0 5 0 4 0 13 0 1 8 6 0 4 0 14 0 0 7 0 4 0 15 0 0 8 0 5 0 16 0 1 8 ...

Страница 42: ...5 10 5 00 5 0 42 1 5 1 5 11 0 0 43 1 5 1 5 12 0 0 44 2 6 2 6 13 0 0 45 2 6 2 6 14 4 9 0 46 2 6 2 6 15 0 0 47 2 6 2 6 16 5 0 5 0 48 2 6 2 6 17 5 0 5 0 49 2 6 2 6 18 5 0 5 0 50 2 6 2 6 19 5 0 5 0 51 2 6 2 6 20 0 0 52 2 6 2 6 21 0 0 53 2 6 2 6 22 5 0 5 0 54 2 6 2 6 23 2 0 0 55 2 6 2 6 24 0 0 56 4 5 4 5 25 0 0 57 3 2 3 2 26 4 8 4 8 58 1 8 1 8 27 0 3 4 8 59 1 8 1 8 28 0 4 0 60 2 6 2 6 29 0 0 61 0 1 0 1...

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