Icom Ic-2820H Service Manual
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Icom Ic-2820H Service Manual

Dual band fm transcever
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Enlarged version
DUAL BAND FM TRANSCEVER
S-14325XZ-C1
Mar. 2007

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Summary of Contents for Icom Ic-2820H

  • Page 1 DUAL BAND FM TRANSCEVER S-14325XZ-C1 Mar. 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 SECTION 1 SPECIFICATIONS 1 - 1...

  • Page 5: Inside Views

    SECTION 2 INSIDE VIEWS • TOP VIEW D/A converter Electric volume (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 4-1 RECEIVER CIRCUITS • 260−375 MHz 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 Cut-off frequency shifting signal to the HPF VCO power control signal to the VCO (IC48). R_UVCO_SEL select switch (Right band UHF; Q65, 68). “L”=Right band TX/RX VCO is activated. Cut-off frequency shifting signal to the HPF DA_SEL (IC48).
  • Page 16 PORT NAME DESCRIPTION AF mute signal to the SP mute switch L_AF_MUTE (Q102). Input port for [PTT] key on the connected MIC_PTT microphone. 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;...

  • Page 17: Preparation

    SECTION 5 ADJUSTMENT PROCEDURE 5-1 PREPARATION ¤ REQUIRED TEST EQUIPMENTS When adjusting IC-2820H, 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-2820H (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-2820H 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-2820H 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-2820H 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-2820H 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: 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 R156 7030005050 S.RES ERJ2GEJ 103 X (10 k) 105.5/45.4 1180002371 S.REG R1111N321B-TR-F 42.4/18.8 R157 7030005050 S.RES ERJ2GEJ 103 X (10 k) 101.6/45.4 1110005991 S.IC S-80945CNMC-G9F-T2G...

  • Page 27: Main Unit

    [CONTROL UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 4030016790 S.CER ECJ0EB1C103K 116.1/25.4 1110004310 S.IC M62352GP 75EC 25/108.5 4550006840 S.TAN TEESVA 1E 225M8R 52.3/24.5 1150002121 IC S-AU82L (I,Q) C101 4550006840 S.TAN TEESVA 1E 225M8R 93/25.2 1150002161 IC S-AV32 (I2 Q) C102 4550006840 S.TAN TEESVA 1E 225M8R...
  • Page 28 [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 29 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION D154 1790001260 S.DIO MA2S077-(TX) 80.7/70 6200002390 S.COL LQW31HN64NJ03L 50.6/113.7 D155 1790001621 S.DIO 1SV308 (TPL3,F) 88.4/63.5 6200011590 S.COL LQW18AN39NG00D 53.6/116.3 D156 1790001260 S.DIO MA2S077-(TX) 77.1/70 6200011660 S.COL LQW18ANR15G00D 88.5/119.4 D157 1790001621 S.DIO 1SV308 (TPL3,F) 89.3/65.5 6200010160 S.COL AS080440-22N...
  • Page 30 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005240 S.RES ERJ2GEJ 473 X (47 k) 103.6/101.6 R137 7030007290 S.RES ERJ2GEJ 222 X (2.2 k) 68.1/99.6 7030005240 S.RES ERJ2GEJ 473 X (47 k) 18/128.5 R138 7030010040 S.RES ERJ2GEJ-JPW 85.2/87.3 7030005240 S.RES ERJ2GEJ 473 X (47 k) 85.9/76.2 R139...
  • Page 31 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R245 7030005050 S.RES ERJ2GEJ 103 X (10 k) 34.7/148.8 R356 7030007280 S.RES ERJ2GEJ 331 X (330) 41.6/49.3 R246 7030005090 S.RES ERJ2GEJ 104 X (100 k) 112/88.6 R358 7030005170 S.RES ERJ2GEJ 474 X (470 k) 6/38 R247 7030007320 S.RES ERJ2GEJ 225 X (2.2 M)
  • Page 32 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R481 7030005160 S.RES ERJ2GEJ 105 X (1 M) 124.8/81.4 R620 7030005050 S.RES ERJ2GEJ 103 X (10 k) 121.3/41.4 R482 7030005050 S.RES ERJ2GEJ 103 X (10 k) 116.8/86.2 R621 7030005160 S.RES ERJ2GEJ 105 X (1 M) 116.7/44.4 R483 7030000020 S.RES MCR10EZHJ 1 (010)
  • Page 33 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R769 7030005230 S.RES ERJ2GEJ 334 X (330 k) 60.1/18.4 R880 7030006610 S.RES ERJ2GEJ 394 X (390 k) 107.7/57.2 R770 7030005110 S.RES ERJ2GEJ 224 X (220 k) 114.4/69.1 R881 7030006610 S.RES ERJ2GEJ 394 X (390 k) 103/55.8 R771 7030005110 S.RES ERJ2GEJ 224 X (220 k)
  • Page 34 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C101 4030017530 S.CER ECJ0EC1H0R5B 95.5/105.4 C211 4030017430 S.CER ECJ0EC1H101J 61.2/102.5 C102 4030017590 S.CER ECJ0EC1H070C 18.7/121.5 C212 4030017460 S.CER ECJ0EB1E102K 76.8/139 C103 4030017460 S.CER ECJ0EB1E102K 19.6/121.5 C213 4030017460 S.CER ECJ0EB1E102K 56/104.8 C104 4030017350 S.CER ECJ0EC1H020B 38.5/76.6...
  • Page 35 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C322 4030017460 S.CER ECJ0EB1E102K 81.7/118.1 C429 4030017400 S.CER ECJ0EC1H220J 51.9/44.4 C323 4030017350 S.CER ECJ0EC1H020B 106.6/133.4 C430 4030017360 S.CER ECJ0EC1H030B 31.2/48.3 C324 4030017460 S.CER ECJ0EB1E102K 59/138.9 C431 4030017360 S.CER ECJ0EC1H030B 31.6/46.5 C325 4030017360 S.CER ECJ0EC1H030B 60.6/139.8...
  • Page 36 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C540 4030017390 S.CER ECJ0EC1H180J 28.8/65.8 C660 4030017400 S.CER ECJ0EC1H220J 89.9/4.9 C541 4030017730 S.CER ECJ0EB1E471K 73.2/81.6 C661 4030018910 S.CER C1608 JB 0J 475K-T 116.5/104.5 C543 4030017360 S.CER ECJ0EC1H030B 29.5/72.2 C662 4030017400 S.CER ECJ0EC1H220J 89.9/11.1 C544 4030017350 S.CER ECJ0EC1H020B...
  • Page 37 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C782 4030017460 S.CER ECJ0EB1E102K 79.8/57.5 C911 4030016930 S.CER ECJ0EB1A104K 111.7/53.7 C783 4030017460 S.CER ECJ0EB1E102K 90.3/44.4 C912 4030016930 S.CER ECJ0EB1A104K 59.9/28.2 C784 4030017460 S.CER ECJ0EB1E102K 85.4/47.1 C913 4030017460 S.CER ECJ0EB1E102K 114.3/98.8 C785 4030017670 S.CER ECJ0EC1H390J 85.4/63.8...
  • Page 38 [MAIN UNIT] ORDER DESCRIPTION LOCATION EP40 6910018460 S.BEA MMZ1005Y102C-T 127.7/36.8 EP41 6910018460 S.BEA MMZ1005Y102C-T 127.7/34.1 EP42 6910018460 S.BEA MMZ1005Y102C-T 127.7/35.9 EP43 6910018460 S.BEA MMZ1005Y102C-T 127.7/33.2 EP47 6910018460 S.BEA MMZ1005Y102C-T 45.7/57.9 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...
  • Page 39 SECTION 7 MECHANICAL PARTS [CHASSIS PARTS] [VR2 UNIT] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. 7210003250 RV-320 6510004880 MR-DSE-01 6510004880 MR-DSE-01 8900016030 OPC-1666 6510009580 ZHR-2 [MAIN UNIT] 2510001160 057P0802 ORDER 2710000820 EFB0412VHD-6P38 DESCRIPTION QTY. 9016420020 23/04/140/B09/W01 6510023110 3008L-8P8C 9016420010 23/00/140/B09/W01 6510025950 PCB-606 (6P6C) 6510023161 DN-508B-6-L 8010020640 2969 CHASSIS 6450001430 HSJ1462-01-010...
  • Page 40 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 41 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 42 (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 43 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 Common line IDET DETECT SELECT...
  • Page 44 • BLOCK DIAGRAM (Right side) Q15:2SA1362 IC42:TC7S66FU Q58: ANT-1 Q121:UNR9213J 2SC4738 Q12:UNR9213J (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 45 SECTION 10 VOLTAGE DIAGRAM 10-1 CONTROL UNIT DS33 DS35 DS36 DS31 DS32 DS34 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 2SC4738 2SC4738 2SC473 8 A_CS1 R133 R175 R142...
  • Page 46 10-2 MAIN UNIT (1) ZBFS5105 C622 C618 L141 0.001 L138 L139 0.001 ZBFS5105 ZBFS5105 IC24 ZXCT1022 OPC-465 2SB1132 TA7808F R850 R871 VI N VOUT 180K 100K LOAD IC55 R477 IC21 TA7805F C;4.95V 4.7K C;4.87V D142 IC38 LA4445 *D132 U NR9210J R498 MA2S111 *D136...
  • Page 47 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 48 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 49 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 50 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 51 • 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 52 • 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 53 • BOARD LAYOUTS • MAIN UNIT (BOTTOM VIEW) • MAIN UNIT (TOP VIEW) 12 - 2...
  • Page 55 S-14310XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2007 Icom Inc.

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