Icom IC-E2820 Service Manual

Dual band fm transceiver
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DUAL BAND FM TRANSCEVER
iC-e2820
S-14326XZ-C1
Apr. 2007

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Summary of Contents for Icom IC-E2820

  • Page 1 DUAL BAND FM TRANSCEVER iC-e2820 S-14326XZ-C1 Apr. 2007...
  • Page 2 8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
  • Page 3: Table Of Contents

    CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTIONS SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS ....................... 4-1 TRANSMITTER CIRCUITS ....................... 4-4 FREQUENCY SYNTHESIZER ....................4-6 POWER SUPPLY CIRCUITS ..................... 4-8 PORT ALLOCATIONS ....................... 4-9 SECTION ADJUSTMENT PROCEDURES PREPARATION .......................... 5-1 FREQUENCY ADJUSTMENT ....................5-2 TRANSMIT ADJUSTMENT .......................
  • Page 4: Specifications

    SECTION 1 SPECIFICATIONS • : t i – 8 – 5 – – – – – – – – – . y l – • • . l c l l a • • – ° 0 ° 0 • l i b y t i ±...
  • Page 5: Inside Views

    SECTION 2 INSIDE VIEWS • TOP VIEW Electric volume D/A converter (IC33: SM6451B) (IC1: M62364FP) D/A converter (IC54: M62364FP) 1st IF Mixer for UHF bands 1st IF Mixer for VHF bands (IC20: SPM5001) (IC19: SPM5001) LO divider LO filter (79.150−121.150 MHz) (763.650−953.640 MHz) Frequency synthesizer Frequency synthesizer...
  • Page 6 SECTION 3 DISASSEMBLY INSTRUCTION 1. Removing the top cover 3. Removing the MAIN UNIT q Unscrew 10 screws, then remove the top cover. q Unscrew 11 screws from the MAIN UNIT. 10 screws Top cover w Disconnect the cooling fan cable, and unsolder 6 points at the antenna connectors (grey colored).
  • Page 7: Receiver Circuits

    SECTION 4 CIRCUIT DESCRIPTION • 260−375 MHz 4-1 RECEIVER CIRCUITS The received signals from the antenna connector (J1) are RF CIRCUITS passed through two RX switches (RL3 and D57) and the <Left band> tuned BPF (D50), then applied to the RF amplifi er (Q35). •...
  • Page 8 1ST IF CIRCUITS SQUELCH CIRCUITS RX signals from the RF circuits are converted into the 38.85 • NOISE SQUELCH MHz 1st IF signal by being mixed with LO signals from the A portion of FM-demodulated AF signals from the IF IC left band VCO (Q111, D145−147).
  • Page 9 RF CIRCUITS 1ST IF CIRCUITS <Right band> RX signals from the RF circuits are converted into the 46.35 MHz 1st IF signal by being mixed with LO signals from the • 118−174 MHz right band VCO (Q72, D89, 90; Q73, D87, 91, 92). The received signals from the antenna connector ANT-1 (J1) are passed through two LPFs (L101, 104, 108, C342, The converted IF signal from the 1st mixer (IC20) is passed...
  • Page 10: Transmitter Circuits

    SQUELCH CIRCUITS 4-2 TRANSMITTER CIRCUITS • NOISE SQUELCH MICROPHONE AMPLIFIER CIRCUITS A portion of FM-demodulated AF signals from the IF IC The audio signals from the microphone (MIC signals) are (IC18, pin 9) are level-adjusted by D/A converter (IC8), and applied to the microphone amplifi...
  • Page 11 <OPERATION ON THE RIGHT BAND> APC CIRCUITS The modulation signals are applied to the variable capacitor A portion of the TX signal from IC2 is rectifi ed at the power D87 of the left band VCO (Q73, D87, 91, 92) via the detector (D42, 52), and converted into the DC voltage modulation selector (IC63) and modulation mute switch which is in proportion to the RF power, and applied to the...
  • Page 12: Frequency Synthesizer

    RIGHT BAND RX VCO (Q72, D89, 90) 4-3 FREQUENCY SYNTHESIZER This VCO oscillates 1st LO signals for right band RX (118– VCOs 174 MHz and 810–1000 MHz). This transceiver has 3 VCOs; Left band VCO, Right band RX VCO and Right band TX/RX VCO. The VCO output signal is amplified by buffer (Q74) and applied to the LO amplifier (IC45) via VCO switch (D160), LEFT BAND VCO (Q111, D145–147)
  • Page 13 PLL CIRCUITS The phase difference is output from pin 5 as a pulse type The PLL circuit provides stable oscillation of the transmit signal after being passed through the internal charge pump. frequency and receive 1st LO frequency. The PLL output The output signal is converted into the DC voltage (lock frequency is controlled by the divided ratio (N-data) from the voltage) by passing through the loop filter (R694, 696–...
  • Page 14: Power Supply Circuits

    4-4 POWER SUPPLY CIRCUITS Voltage from the power supply is routed to whole of the circuit in the transceiver via switches and regulators. MAIN UNIT CONTROL UNIT TX power NOISE amplifiers (IC2, IC3) FILTER IC55, D164 CPU (IC13), +3.2V IDET CURRENT CPU (IC25) Regulator (Q14, Q15),...
  • Page 15: Port Allocations

    4-5 CPU PORT ALLOCATION PORT NAME DESCRIPTION PORT NAME DESCRIPTION VCO power control signal to the VCO Cut-off frequency shifting signal to the HPF R_UVCO_SEL select switch (Right band UHF; Q65, 68). (IC48). “L”=Right band TX/RX VCO is activated. Cut-off frequency shifting signal to the HPF DA_SEL VCO power control signal to the VCO (IC48).
  • Page 16 PORT NAME DESCRIPTION RESET Reset enable signal input. Noise signal from the IF IC (Left band; L_SQL IC15). CL_SFT2 Clock frequency shifting signal. Noise signal from the IF IC (Right band; R_SQL IC18). R_DATA Data lines for the control unit. TX_DATA Data lines for the control unit.
  • Page 17: Preparation

    SECTION 5 ADJUSTMENT PROCEDURE 5-1 PREPARATION ¤ REQUIRED TEST EQUIPMENTS When adjusting IC-E2820, following test equipments and JIG cable (modified 8-pin modular jack; see the illust below) are required. EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Output voltage : 13.8 V DC Frequency range : 300–3000 Hz...
  • Page 18: Frequency Adjustment

    5-2 FREQUENCY ADJUSTMENT • CONNECTIONS FOR FREQENCY ADJUSTMENT FREQUENCY COUNTER IC-E2820 (0.1–1 GHz) To J1 DC power supply (13.8 V/20 A) Terminator (50 Ω/100 W) − ⊕ − Black Fuses ⊕ 20 A (Loose coupling) ADJUSTMENT ADJUSTMENT CONDITIONS OPERATION VALUE REFERENCE •...
  • Page 19: Transmit Adjustment

    5-3 TRANSMIT ADJUSTMENTS ¤ TRANSMIT OUTPUT POWER ADJUSTMENT • CONNECTIONS FOR TX POWER ADJUSTMENT IC-E2820 To J1 DC power supply (13.8 V/20 A) RF POWER METER (100 W/50 Ω) − ⊕ Fuses − Black 20 A ⊕ ADJUSTMENT ITEM ADJUSTMENT CONDITIONS...
  • Page 20 ¤ DEVIATION ADJUSTMENT • CONNECTION FOR MODULATION ADJUSTMENTS IC-E2820 To J1 MODULATION ANALYZER DC power supply (0.1–1 GHz) ATTENUATOR (13.8 V/20 A) <SETTING> (40 dB/100 W) : OFF : 20 kHz De-emphasis : OFF − ⊕ Detector : (P-P)/2 OSCILLOSCOPE...
  • Page 21 ¤ DEVIATION ADJUSTMENT (continued) ADJUSTMENT ITEM ADJUSTMENT CONDITIONS OPERATION VALUE 430 MHz (Band (FM) • Connect a Modulation Analyzer to Rotate the right band’s [DIAL] to ±4.2 kHz the antenna connector (J1) through DEVIATION Low) [R FMD] adjust the deviation, then push an attenuator.
  • Page 22: Receive Adjustment

    5-4 RECEIVE ADJUSTMENTS ¤ SENSITIVITY ADJUSTMENT • CONNECTION FOR RECEIVE SENSITIVITY AND RSSI ADJUSTMENTS IC-E2820 To J1 DC power supply (13.8 V/20 A) <SETTING> • For RX SENSITIVITY ADJ. STANDARD SIGNAL GENERATOR Modulation : 1 kHz (0.1–1 GHz) − ⊕...
  • Page 23 ¤ SENSITIVITY ADJUSTMENT (continued) ADJUSTMENT ITEM ADJUSTMENT CONDITIONS OPERATION VALUE SENSITIVITY 375.020 MHz (Left Band) 19 • Set the SSG as; [L LT5] Frequency : 375.020 MHz (Right Band) [R LT5] 399.980 MHz (Left Band) 21 • Set the SSG as; [L HT5] Frequency : 399.980 MHz...
  • Page 24 ¤ S-METER ADJUSTMENT ADJUSTMENT ITEM ADJUSTMENT CONDITIONS OPERATION VALUE S-METER Connect a Standard Signal Generator to the antenna connector (J1). 127.020 MHz (Left Band) • Set the SSG as; (S3 level) [L S31] Frequency : 127.020 MHz Level : −1 dBµ (Right Band) [R S31] (Full scale)
  • Page 25: Squelch Adjustment

    ¤ SQUELCH ADJUSTMENT • CONNECTION FOR SQUELCH ADJUSTMENT IC-E2820 To J1 DC power supply (13.8 V/20 A) TERMINATOR (50 Ω/100 W) − ⊕ Fuses − 20 A Black ⊕ ADJUSTMENT ITEM OPERATION VALUE Connect a Terminator (50 Ω) to the antenna connector (J1).
  • Page 26 (FM) [R SQ8] (FM-N) [R SQ8] ¤ DIVERSITY ADJUSTMENT • CONNECTION FOR DIVERSITY ADJUSTMENT STANDARD SIGNAL GENERATOR (1) (0.1–1 GHz) To J1 IC-E2820 To J2 STANDARD SIGNAL GENERATOR (2) (0.1–1 GHz) DC power supply (13.8 V/20 A) − ⊕ Fuses −...
  • Page 27 ¤ DIVERSITY ADJUSTMENT (continued) ADJUSTMENT ITEM ADJUSTMENT CONDITIONS OPERATION VALUE DIVERSITY 145.020 MHz (Left Band) 1 • Set the SSG as; (S0 level) [L DL2] Frequency : 145.020 MHz Level : −6 dBµ (Right Band) [R DL2] (S3 level) (Left Band) 3 •...
  • Page 28: Section 6 Parts List

    SECTION 6 PARTS LIST [CONTROL UNIT] [CONTROL UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 1180000421 S.IC TA78L05F (TE12R,F) 29.7/14.1 R155 7030003420 S.RES ERJ3GEYJ 681 V (680) 88/44.9 1180002371 S.REG R1111N321B-TR-F 42.4/18.8 R156 7030005050 S.RES ERJ2GEJ 103 X (10 k) 105.5/45.4 1110005991 S.IC S-80945CNMC-G9F-T2G 35.8/18.5...
  • Page 29: Control Unit

    [CONTROL UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 4030016790 S.CER ECJ0EB1C103K 22.1/26 1110004310 S.IC M62352GP 75EC 25/108.5 4030016790 S.CER ECJ0EB1C103K 116.1/25.4 1150002121 IC S-AU82L (I,Q) 4550006840 S.TAN TEESVA 1E 225M8R 52.3/24.5 1150002161 IC S-AV32 (I2 Q) C101 4550006840 S.TAN TEESVA 1E 225M8R 93/25.2 1110004050 S.IC...
  • Page 30 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 1590003290 S.TR UNR9213J-(TX) 102.9/93.5 1790000980 S.DIO MA742 (TX) 76.8/133.6 1590003290 S.TR UNR9213J-(TX) 113.8/89.6 1750000711 S.VCP HVC350BTRF-E 30/101.3 1530003990 S.TR 2SC4738-BL (TE85L,F) 25.4/47.8 1750000711 S.VCP HVC350BTRF-E 67.8/103.5 1590003230 S.TR UNR9113J-(TX) 57/70.6 1790000980 S.DIO MA742 (TX) 41/113.9...
  • Page 31 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION D160 1790001260 S.DIO MA2S077-(TX) 43/48.5 6200003960 S.COL MLF1608A 1R0K-T 102.4/127.3 D161 1750000771 S.VCP HVC376BTRF-E 123.3/87.8 6200010160 S.COL AS080440-22N 38.9/150.6 D162 1750000771 S.VCP HVC376BTRF-E 122.3/89.6 6200011670 S.COL LQW18AN82NG00D 84.2/116.9 D164 1790001250 S.DIO MA2S111-(TX) 114.7/88.1 6200012900 S.COL 0.30-2.0-7TL 57.2N...
  • Page 32 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005000 S.RES ERJ2GEJ 471 X (470) 78.5/97.2 R141 7030008400 S.RES ERJ2GEJ 182 X (1.8 k) 86.4/86.9 7030005240 S.RES ERJ2GEJ 473 X (47 k) 46.1/78.2 R142 7030007280 S.RES ERJ2GEJ 331 X (330) 61.2/99.3 7030005120 S.RES ERJ2GEJ 102 X (1 k) 87.7/67.5...
  • Page 33 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R249 7030005090 S.RES ERJ2GEJ 104 X (100 k) 109/89.6 R362 7030004980 S.RES ERJ2GEJ 101 X (100) 27.8/37.3 R251 7030005070 S.RES ERJ2GEJ 683 X (68 k) 115.3/82.7 R363 7030005210 S.RES ERJ2GEJ 822 X (8.2 k) 40.6/42.9 R252 7030005240 S.RES ERJ2GEJ 473 X (47 k)
  • Page 34 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R485 7030000400 S.RES MCR10EZHJ 1.5 k 98.7/120.5 R625 7030005240 S.RES ERJ2GEJ 473 X (47 k) 125.9/114.3 R486 7030004980 S.RES ERJ2GEJ 101 X (100) 110.1/63.1 R626 7030005240 S.RES ERJ2GEJ 473 X (47 k) 120.9/108.1 R489 7030004980 S.RES ERJ2GEJ 101 X (100)
  • Page 35 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R773 7030009140 S.RES ERJ2GEJ 272 X (2.7 k) 73.5/20.6 R884 7510001770 S.TMR NTCG10 4LH 473JT 52.7/61.2 R774 7030007340 S.RES ERJ2GEJ 153 X (15 k) 72.5/18.8 R885 7510001770 S.TMR NTCG10 4LH 473JT 7.3/60.4 R775 7030005170 S.RES ERJ2GEJ 474 X (470 k)
  • Page 36 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C105 4030017590 S.CER ECJ0EC1H070C 97.4/104.4 C215 4030017460 S.CER ECJ0EB1E102K 72.5/107.6 C106 4030017460 S.CER ECJ0EB1E102K 97.3/103.2 C216 4030016930 S.CER ECJ0EB1A104K 35.5/109.1 C107 4030017460 S.CER ECJ0EB1E102K 19.8/123.3 C217 4030017460 S.CER ECJ0EB1E102K 62.4/104.8 C108 4030017460 S.CER ECJ0EB1E102K 100.3/102...
  • Page 37 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C326 4030011220 S.CER GRM31M2C2H360JV01L 61.5/144 C433 4030017040 S.CER ECJ0EB1A333K 56.3/70.2 C327 4030018010 S.CER ECJ0EC1H360J 98.4/137 C434 4030017420 S.CER ECJ0EC1H470J 32.6/49.1 C328 4030017580 S.CER ECJ0EC1H060C 105.4/133.9 C435 4030017680 S.CER ECJ0EC1H820J 55.8/68.4 C329 4030017430 S.CER ECJ0EC1H101J 109.1/136.1...
  • Page 38 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C547 4030017460 S.CER ECJ0EB1E102K 34.7/68.3 C664 4030017730 S.CER ECJ0EB1E471K 116/32.7 C548 4030016790 S.CER ECJ0EB1C103K 27.5/74.2 C665 4510008500 S.ELE EEE1CA101WP 125.7/43 C549 4030017460 S.CER ECJ0EB1E102K 17.5/81.4 C666 4030016970 S.CER ECJ0EB1C223K 106/107.2 C550 4030016790 S.CER ECJ0EB1C103K 73.2/90.5...
  • Page 39 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C786 4030017460 S.CER ECJ0EB1E102K 75.3/55.5 C915 4030016930 S.CER ECJ0EB1A104K 125.8/79.4 C787 4030017630 S.CER ECJ0EC1H120J 83.7/60.9 C916 4030016930 S.CER ECJ0EB1A104K 121.3/83.4 C788 4030017460 S.CER ECJ0EB1E102K 79.8/55.5 C917 4030016930 S.CER ECJ0EB1A104K 115.4/89.4 C789 4030017640 S.CER ECJ0EC1H150J 85.4/65.4...
  • Page 40 [MAIN UNIT] ORDER DESCRIPTION LOCATION EP48 6910018460 S.BEA MMZ1005Y102C-T 91/61.3 EP49 6910014690 S.BEA MPZ1608S221A-T 121.3/152.3 EP50 6910014690 S.BEA MPZ1608S221A-T 109.4/155.1 EP51 6910018460 S.BEA MMZ1005Y102C-T 119.3/144.2 EP52 6910014690 S.BEA MPZ1608S221A-T 128.6/143.6 EP53 6910014690 S.BEA MPZ1608S221A-T 126.3/144.3 EP54 6910014690 S.BEA MPZ1608S221A-T 113.9/138.9 EP55 6910014690 S.BEA MPZ1608S221A-T...
  • Page 41: Section 7 Mechanical Parts

    SECTION 7 MECHANICAL PARTS [CHASSIS PARTS] [MAIN UNIT] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. 6510023110 3008L-8P8C 6510004880 MR-DSE-01 6510025950 PCB-606 (6P6C) 6510004880 MR-DSE-01 6510023161 DN-508B-6-L 6450001430 HSJ1462-01-010 6510009580 ZHR-2 6510025940 PJ-3047S 6450001440 HSJ1403-01-010 2510001160 057P0802 8900016070 OPC-1669 2710000820 EFB0412VHD-6P38 8900016070 OPC-1669 7120000470 ERDS2T0 9016420020 23/04/140/B09/W01 7120000470 ERDS2T0...
  • Page 42 MP5(C) MP10(C) MP21(CON) MP1(CON) MP28(CON) MP13(CON) MP23(CON) MP14(CON) MP7(CON) MP5(CON) MP15(CON) MP16(CON) MP17(CON) MP16(C) MP14(CON) MP10(CON) MP7(C) MP13(CON) MP17(C) MP9(CON) MF1(C) MP18(C) EP1(U) MP9(CON) MP3(CON) MP14(C) MP4(CON) MP9(C) J2(C) MP6(CON) MP28(CON) MP5(CON) MP11(CON) MP36(C) MP9(CON) MP14(C) MP23(CON) MP8(CON) MP6(CON) MP1(C) MP24(CON)×2 MP10(CON) MP11(CON)
  • Page 43 SECTION 8 BOARD LAYOUTS • MAIN UNIT (TOP VIEW) • HM-133 (TOP VIEW) MICU/D EXTMIC MICE (MAIN UNIT) MICIN • VR1 UNIT (TOP VIEW) • CONTROL UNIT (TOP VIEW) (MAIN UNIT) CTHV RDATA TXDATA • VR2 UNIT (TOP VIEW) B6647A 8 - 1...
  • Page 44 (BOTTOM VIEW) • CONTROL UNIT (BOTTOM VIEW) B6646A RVOL +3.2V RSQL +3.2V J3 (CONTROL UNIT) J4 (CONTROL UNIT) LVOL +3.2V LSQL +3.2V • VR2 UNIT (BOTTOM VIEW) RDATA TDATA 4 S-14325XH-P2 Printed in Japan © 2007 Icom Inc. 8 - 2...
  • Page 45 SECTION 9 BLOCK DIAGRAM • BLOCK DIAGRAM (Left side) NOISE RX line IC55:ZXCT1022 Q87: IC28: IC30: IC29: IC52: IC48 1/4,2/4: IC51: D164:MA2S111 2SC4738 TA75S558F Q88:UNR9213J CD4066BPWR TC7W53FU TC7W53FU LM2902PWR TC7W53FU TX line To the microphone CURRENT MIC SENS AMOD IDET Common line DETECT SELECT...
  • Page 46 • BLOCK DIAGRAM (Right side) Q15:2SA1362 IC42:TC7S66FU Q58: ANT-1 Q12:UNR9213J Q121:UNR9213J 2SC4738 (CHASSIS; J1) L_LV FILTER L_PLLSW L_VCO8 D59:L709CE BUFF D155:1SV308 VTX_C D47:MA742 D75:L709CE Q119: D157:1SV308 2SC3357 MA2S111 2SC4703 S-AV32 D39:MA742 D77:MA2S077 136.000–174.000MHz L_VCO8 2SK1069 Q113: PLLCK LO SW TX/RX DRIVE 2SC5231 LIMITER...
  • Page 47 SECTION 10 VOLTAGE DIAGRAM 10-1 CONTROL UNIT DS31 DS32 DS33 DS34 DS35 DS36 DS37 R172 R171 R176 FAMG1211F FAMG1211F FAMG1211F FAMG1211F FAMG1211F FAMG1211F FAMG1211F 4.7K 04-6240-034-001-800 R170 G REEN_D1 MASTER 2SC473 8 2SC4738 2SC4738 2SC4738 2SC473 8 2SC4738 2SC4738 A_CS1 R133 R175 R142...
  • Page 48 10-2 MAIN UNIT (1) ZBFS5105 C622 C618 L141 0.001 L138 L139 0.001 ZBFS5105 ZBFS5105 IC24 ZXCT1022 OPC-465 R850 R871 2SB1132 TA7808F VI N VOUT 180K 100K LOAD IC55 R477 IC21 TA7805F C;4.95V 4.7K C;4.87V D142 LA4445 IC38 R498 *D132 U NR9210J MA2S111 *D136 R_UVCO_SEL...
  • Page 49 MAIN UNIT (2) To VCO L_VCO8 MOD_DA C;4.9V MODSEL VMMUTE VHFYGR VHFYGR L_VCO_SHIFT L_RXLO C466 L_RXLO L_VCO_MO D PLLCK DAN222 R_LV PLLDATA VTX_C L220_R5 LREFCON L_VR5 L_LV L_PLLSTB UTX_C L_R5C L_UR5 L140_R5 MAIN UNIT (4) D112 DAN222 VTX_C L300_R5 L_2ndLo (PLL circuit for Left band) UTX_C L_LO_SW...
  • Page 50 MAIN UNIT (3) VT;7.81V C;7.85V UT;0V R;0V VTX_C AS080647 AS080547 0.001 R105 R116 C227 0.001 VHFYGR VHFYGR MA742 C164 0.001 0.001 C212 VTX_C UTX_C VT;0V UT;7.73V R;0V UTX_C S-AU82L UNR9213J AS100340 AS080340 R106 C296 C308 L108 UHFYGR C123 AS080440 L709CE MA742 MA742 C265...
  • Page 51 MAIN UNIT (4) L _VCO8 C ; 7 . 8 8 V VMMUTE L_VCO_SHIFT C ; 4 . 7 8 V C774 L 1 4 7 R679 R680 LREFCO N VCON 270K R728 Q11 2 2SC5108 68 0 C R - 8 3 3 UNR9213J Q121 T ;...
  • Page 52 MAIN UNIT (5) C;7.88V R457 MP 4 MP 9 2969 2969 MP 5 IC62 OU T 2601 R441 C536 C544 MP 6 L135 C554 C558 C560 UPC2709TB C434 8.2N L113 2775 100P R356 C446 R140_R5 R140_R5 2SC5108 T;6.98V R;7.01V M A2S077 R428 R436 R800_R5...
  • Page 53 • EXPLODED VIEW MP3 (C) SECTION 11 HM-133 MP2 (C) • ELECTRICAL PARTS [MAIN UNIT] MAIN-A UNIT MP9 (C) [MAIN-A UNIT] ORDER DESCRIPTION LOCATION ORDER DESCRIPTION 4030006860 S.CER C1608 JB 1H 102K-T 10.4/28.5 S1 (M) LOCATION 4030006860 S.CER C1608 JB 1H 102K-T 23.1/14 1140011491 S.IC uPD789071MC-041-5A4-E1-A...
  • Page 54 • PARTS LIST SECTION 12 UT-123 (Optional product) [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION • VOLTAGE DIAGRAM 1180002371 S.REG R1111N321B-TR-F 13/6.8 4030017460 S.CER ECJ0EB1E102K 4.2/26.4 IC101 1130010920 S.IC AMBE-2020 9.8/9.5 4550006930 S.TAN TEESVP 0J 225M8R 1.8/27.8 IC102 1130011930 S.IC SN74LVC1G04DCKR...
  • Page 55 • BOARD LAYOUTS • MAIN UNIT (BOTTOM VIEW) • MAIN UNIT (TOP VIEW) 12 - 2...
  • Page 56 Phone : +34 (93) 590 26 70 Fax : +34 (93) 589 04 46 Glenwood Centre #150-6165 : http://www.icomspain.com Highway 17 Delta, B.C., V4K 5B8, Canada E-mail : icom@icomspain.com Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090 : http://www.icomcanada.com E-mail : info@icomcanada.com Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K.
  • Page 57 S-14326XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2007 Icom Inc.

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