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Model No: 3420

Drawing No:

Customer :

Model No:

H 520 PLUS

Rev. Date:

ALIGNMENT PROCEDURE

Step

Setting

Connection

Adjuster

Adjust for

1

Frequency adjustment

MIC : Receive

Volume : optional
Squelch : optional

CH selector : 19

Frequency counter to

dummy load (Figure

1).

X302 27.185MHz

±

300Hz

2

VCO Voltage adjustment

MIC : Receive

Volume : optional

Squelch : optional

CH selector : 19

Connect DC

voltmeter at test

point1

(Figure 2).

T302

1.4V at RX.

Figure 1 Figure

2

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Содержание H-520 PLUS

Страница 1: ...Created by Approved by Rev No For Stage Release Date Page 1 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date H 520 PLUS Service Manual...

Страница 2: ...LUS Rev Date Table of Contents Page Specifications 3 Test and Alignment Procedure 8 Block Diagram 13 Schematic Diagram 14 Printed Circuit Board 23 Channel Frequency Charts 25 Parts List 40 Semiconduct...

Страница 3: ...mm Weight 0 50 kg 2 RECEIVER Receiving System Dual Conversion Super Heterodyne Intermediate Frequency 1st IF 10 695 MHz 2nd IF 455 MHZ Sensitivity 0 5 V for 20 db SINAD in FM mode Audio Distortion Le...

Страница 4: ...t a channel where no signal are present or 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 squelc...

Страница 5: ...or This network also serves to match the impedance between TX power AMP Q204 and the antenna C Circuit for Limiting Power After finished all alignment the constant voltage supply circuit limits the av...

Страница 6: ...type with the first IF 10 695 MHz and second IF 455 KHz Receiver is separated two blocks 1st IF section and 2nd IF section The PLL synthesizer supplies first local frequency 16 270 16 710 MHz for EU...

Страница 7: ...Q601 other components Repair or replace Replace Replace Replace the defective components No noise on speaker Measure all the voltage of IC601 102 with voltage chart Defective squelch circuit component...

Страница 8: ...ep Setting Connection Adjuster Adjust for 1 Frequency adjustment MIC Receive Volume optional Squelch optional CH selector 19 Frequency counter to dummy load Figure 1 X302 27 185MHz 300Hz 2 VCO Voltage...

Страница 9: ...Second harmonic check MIC Transmit Volume optional Squelch optional CH selector 19 Connect RF power meter With dummy load to spectrum analyzer through coupler 40 dB Attenuator to EXT ANT jack on the s...

Страница 10: ...Created by Approved by Rev No For Stage Release Date Page 10 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date Figure 3 Figure 4...

Страница 11: ...with 8 ohm dummy load Figure 7 T102 T103 Maximum indication on SSVM Reduce output from RFSG until the audio output becomes about 600mV 2 Squelch adjustment MIC Receive Volume 600mV Squelch Clockwise...

Страница 12: ...Created by Approved by Rev No For Stage Release Date Page 12 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date Figure 5 Figure 6 Figure 7...

Страница 13: ...Created by Approved by Rev No For Stage Release Date Page 13 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date...

Страница 14: ...Created by Approved by Rev No For Stage Release Date Page 14 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date...

Страница 15: ...Created by Approved by Rev No For Stage Release Date Page 15 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date...

Страница 16: ...ing transmit The VCO of the PLL operates 13 4825 MHz CH 1 to 13 7025 MHz CH 40 for EU 13 800625 MHz CH 1 to 13 995625 MHz CH 40 for UK the VCO frequency goes to the double circuit Q201 T203 T204 which...

Страница 17: ...ough an active low pass filter and using the output to control the VCO frequency through varicap diode D301 Under locked conditions both of phase detector input signal must be indential at 2 5 KHz The...

Страница 18: ...ng signals Double output Frequency Transmit _______ Transmit _______ CH 1 13 4825 MHz CH 1 13 800625 MHz CH 40 13 7025 MHz CH 40 13 995625 MHz 26 965 MHz 27 60125 MHz 27 405 MHz 27 99125 MHz Since all...

Страница 19: ...16 43 5425 13 5626 15 27 135 6528 16 44 5427 13 5675 16 27 155 6532 16 46 5431 13 5775 17 27 165 6536 16 47 5433 13 5825 18 27 175 6544 16 48 5435 13 5875 19 27 185 6548 16 49 5437 13 5925 20 27 205 6...

Страница 20: ...25 6822 5 17 05625 5550 25 13 875625 17 27 76125 6826 5 17 06625 5552 25 13 880625 18 27 77125 6830 5 17 07625 5554 25 13 885625 19 27 78125 6834 5 17 08625 5556 25 13 890625 20 27 79125 6838 5 17 096...

Страница 21: ...scillator with internal amplifier C VCO Q301 and surrounding parts are consisting a clapp oscillator works as a VCO of IC302 the VCO can be oscillate over the required of 13 4825 MHz to 17 29625 MHz D...

Страница 22: ...quadrature detector AM signals are recovered with envelope detector 4 FREQUENCY STABILITY LET Fo Crystal oscillator frequency Fr Phase detector reference frequency Fvco VCO frequency Ft Transmit frequ...

Страница 23: ...Created by Approved by Rev No For Stage Release Date Page 23 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date Printed Circuit Board...

Страница 24: ...Created by Approved by Rev No For Stage Release Date Page 24 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date...

Страница 25: ...5 AM FM 4 27 005 AM FM 24 27 235 AM FM 5 27 015 AM FM 25 27 245 AM FM 6 27 025 AM FM 26 27 265 AM FM 7 27 035 AM FM 27 27 275 AM FM 8 27 055 AM FM 28 27 285 AM FM 9 27 065 AM FM 29 27 295 AM FM 10 27...

Страница 26: ...985 AM FM 21 27 215 AM FM 4 27 005 AM FM 22 27 225 AM FM 5 27 015 AM FM 23 27 255 AM FM 6 27 025 AM FM 24 27 245 AM FM 7 27 035 AM FM 25 27 265 AM FM 8 27 055 AM FM 26 26 875 AM FM 9 27 065 AM FM 27 2...

Страница 27: ...M FM 52 26 675 FM 13 27 115 AM FM 53 26 685 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 2...

Страница 28: ...26 985 FM 23 27 255 FM 4 27 005 AM FM 24 27 235 FM 5 27 015 AM FM 25 27 245 FM 6 27 025 AM FM 26 27 265 FM 7 27 035 AM FM 27 27 275 FM 8 27 055 AM FM 28 27 285 FM 9 27 065 AM FM 29 27 295 FM 10 27 075...

Страница 29: ...27 005 AM FM 24 27 235 AM FM 5 27 015 AM FM 25 27 245 AM FM 6 27 025 AM FM 26 27 265 AM FM 7 27 035 AM FM 27 27 275 AM FM 8 27 055 AM FM 28 27 285 AM FM 9 27 065 AM FM 29 27 295 AM FM 10 27 075 AM FM...

Страница 30: ...7 225 FM 3 26 985 FM 23 27 255 FM 4 27 005 FM 24 27 235 FM 5 27 015 FM 25 27 245 FM 6 27 025 FM 26 27 265 FM 7 27 035 FM 27 27 275 FM 8 27 055 FM 28 27 285 FM 9 27 065 FM 29 27 295 FM 10 27 075 FM 30...

Страница 31: ...7 105 FM 13 27 72125 FM 13 27 115 FM 14 27 73125 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 18...

Страница 32: ...AM FM 4 27 000 AM FM 24 27 230 AM FM 5 27 010 AM FM 25 27 240 AM FM 6 27 020 AM FM 26 27 260 AM FM 7 27 030 AM FM 27 27 270 AM FM 8 27 050 AM FM 28 27 280 AM FM 9 27 060 AM FM 29 27 290 AM FM 10 27 07...

Страница 33: ...26 655 172 27 555 252 28 455 332 29 355 13 25 765 93 26 665 173 27 565 253 28 465 333 29 365 14 25 775 94 26 675 174 27 575 254 28 475 334 29 375 15 25 785 95 26 685 175 27 585 255 28 485 335 29 385 1...

Страница 34: ...282 28 775 362 29 675 43 26 085 123 26 985 203 27 885 283 28 785 363 29 685 44 26 105 124 27 005 204 27 905 284 28 805 364 29 705 45 26 115 125 27 015 205 27 915 285 28 815 365 29 715 46 26 125 126 2...

Страница 35: ...307 29 075 387 29 975 68 26 385 148 27 285 228 28 185 308 29 085 388 29 985 69 26 395 149 27 295 229 28 195 309 28 095 389 29 995 70 26 405 150 27 305 230 28 205 310 29 105 390 30 005 71 26 415 151 2...

Страница 36: ...12 25 750 92 26 650 172 27 550 252 28 450 332 29 350 13 25 760 93 26 660 173 27 560 253 28 460 333 29 360 14 25 770 94 26 670 174 27 570 254 28 470 334 29 370 15 25 780 95 26 680 175 27 580 255 28 480...

Страница 37: ...282 28 770 362 29 670 43 26 080 123 26 980 203 27 880 283 28 780 363 29 680 44 26 100 124 27 000 204 27 900 284 28 800 364 29 700 45 26 110 125 27 010 205 27 910 285 28 810 365 29 710 46 26 120 126 2...

Страница 38: ...307 29 070 387 29 970 68 26 380 148 27 280 228 28 180 308 29 080 388 29 980 69 26 390 149 27 290 229 28 190 309 28 090 389 29 990 70 26 400 150 27 300 230 28 200 310 29 100 390 30 000 71 26 410 151 2...

Страница 39: ...26 145 AM FM 32 28 395 AM FM 8 26 195 AM FM 33 28 445 AM FM 9 26 245 AM FM 34 28 495 AM FM 10 26 295 AM FM 35 28 545 AM FM 11 26 545 AM FM 36 28 795 AM FM 12 26 595 AM FM 37 28 845 AM FM 13 26 645 AM...

Страница 40: ...7994AB 411994B PCB SUB 14X20X1 2T 1 SMD 501 400019AB 53420MPA MAIN PCB AUTO ASSY H 520 PLUS 1 911 600007BG 05B0005Z RES CHIP 0 1 16W 5 1608 1 SMD L612 911 622037BG 05B2218Z RES CHIP 220 1 16W 5 T 1608...

Страница 41: ...8 2K 1 16W 5 1005 6 SMD R709 211 11 212 1 209 911 691057BF 05D9130Z RES CHIP 91K 1 16W 5 1005 2 SMD R3 503 911 590002AA 0671045Y RES SEMIFIXED 100K TMC3KJB100K 3DIA 2 SMD RV102 201 917 990003AA 075103...

Страница 42: ...1HG 1339429Y CAP CERAMIC CHIP 39PF GRM36COG390J50V 2 SMD C302 127 913 424000HB 1340121Y CAP CERAMIC CHIP 4PF GRM39COG040C50V 1 SMD C224 913 414000HBAA 1340187Y CAP CERAMIC CHIP 4PF GRM36COG040C50V 1 S...

Страница 43: ...IC802 874 178569AL 2218858 IC OTP EM78P569ALQJ 1 SMD IC801 875 100386SP 2310381 IC LM386MX 1 SO 08 1 SMD IC601 882 590251SA 2420246 DIODE KDV251S 2 SMD D302 301 882 190226AA 2430494 DIODE SWITCHING KD...

Страница 44: ...140006AA SOCKET 6P HEADER SMD 1 SUB 925 730003AA 4208062U JACK STEREO EARPHONE EJS 4 4035S 1 SUB JACK1 925 730004AA 4208073V JACK STEREO EARPHONE EJS 4 4125S 1 SUB JACK2 925 990090AA WAFER 2 0MM 2P 1...

Страница 45: ...2 B 5 25 5 29 B 4 76 4 63 Q502 E 7 85 8 22 Q703 E 0 05 0 KTA1504 C 2 29 2 96 KRC104 C 0 06 0 B 7 29 7 71 B 4 71 4 66 Q506 E 5 06 4 98 Q702 E 0 04 0 KTA1504 C 4 95 0 15 KRC104 C 0 44 1 65 B 4 28 4 9 B...

Страница 46: ...09 E 2 29 2 95 Q102 G 0 04 0 KTC3875 C 7 37 7 73 KTK211 D 0 02 3 39 B 2 77 3 2 S 0 02 0 86 Q510 E 0 04 0 Q103 G 0 04 0 KTC3875 C 0 04 0 KTK211 D 0 02 3 4 B 0 71 0 67 S 0 02 0 87 Q505 E 0 04 4 2 Q501 E...

Страница 47: ...DS114 K 0 04 3 4 D701 A1 2 0 04 0 06 0 00 0 02 D103 A 0 05 4 1 KDS226 K 0 05 0 01 KDS114 K 0 04 3 39 D801 A1 2 0 12 4 25 DIV 0 D107 A1 2 0 00 0 11 1 20 0 11 KDS226 K 4 75 0 KDS184 K 0 84 0 63 D802 A1...

Страница 48: ...63 7 0 00 0 00 57 4 65 4 63 8 0 00 0 00 58 4 65 4 63 9 0 00 0 00 59 4 65 4 63 10 2 77 2 72 60 0 04 0 00 11 2 75 2 72 61 0 04 0 00 12 2 75 2 72 62 4 76 4 74 13 2 75 2 72 63 0 04 0 00 14 2 75 2 72 64 0...

Страница 49: ...72 32 0 04 0 00 82 2 75 2 72 33 0 04 0 00 83 2 75 2 72 34 4 69 4 66 84 2 77 2 74 35 0 04 0 00 85 2 75 2 72 36 0 06 0 02 86 2 77 2 74 37 0 84 0 83 87 2 76 2 74 38 0 68 0 87 88 2 75 2 72 39 4 75 4 72 8...

Страница 50: ...2 1 37 1 33 9 2 39 2 34 3 0 50 0 79 10 2 39 2 34 4 2 40 2 34 11 2 39 2 34 5 2 40 2 34 12 0 61 0 53 6 3 08 3 03 13 1 38 1 33 IC901 DBL5020 7 0 05 0 00 14 4 71 4 65 1 0 05 0 00 5 0 11 0 06 2 0 05 0 00...

Страница 51: ...2 BU2630 8 0 05 0 01 16 2 14 2 09 1 0 05 3 88 13 0 34 1 50 2 0 05 3 36 14 0 05 2 92 3 0 04 2 57 15 0 04 1 16 4 0 06 3 93 16 0 04 0 00 5 0 02 1 82 17 0 04 1 59 6 0 00 1 17 18 0 34 1 50 7 0 00 2 96 19 0...

Страница 52: ...Rev No For Stage Release Date Page 52 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date IC Ref PIN TX RX 1 0 05 0 00 2 5 03 4 98 IC501 LD1117 3 8 43 8 63 1 5 03 4 98 2 0 04 0 00 IC8...

Страница 53: ...No For Stage Release Date Page 53 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date SEMICONDUCTOR LEAD IDENTIFICATION AND IC INTERNAL CONNECTIONS DIODES 1N4004 1N4148 1N5232 1N5404...

Страница 54: ...Date Page 54 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date TRANSISTORS FET KTK211 KRC101S KRC110 KTC3876 KTC3880 KTC3875 3880 KRC101 104 Q204 2SK3476 IC501 LD111750 Q203 2SK307...

Страница 55: ...e Release Date Page 55 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date INTERATED CIRCUITS IC801 EM78P569 IC 302 BU2630F IC102 4 KIA324 IC901 DBL5020 IC902 14066 IC101 TK10931 IC80...

Страница 56: ...Created by Approved by Rev No For Stage Release Date Page 56 Of 57 Model No 3420 Drawing No Customer Model No H 520 PLUS Rev Date Explode view drawing...

Страница 57: ...1274AA 896485 KEYPAD SILICONE RUBBER 1 20 833 501216AA 906706 FELT 32 5XT 0 3 1 21 833 501280AA TAPE WINDOW 3M T0 16 1 22 925 990002ZA 4210368A CONNECTOR PLUG UG 1094 U W 1 CON4 23 837 501055AA 651169...

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