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Icom IC-706MKIIG Service Manual

Hf/vhf/uhf all mode transceiver.
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IZ5CCV
SERVICE
MANUAL
HF/VHF/UHF ALL MODE TRANSCEIVER
i706MK™G

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Table of Contents

   Summary of Contents for Icom IC-706MKIIG

  • Page 1   www.r6-ru4montesecchieta.it IZ5CCV SERVICE MANUAL HF/VHF/UHF ALL MODE TRANSCEIVER i706MK™G...
  • Page 2 1110004080 S.IC µPC2709T IC-706MKIIG MAIN UNIT 05 pieces ceiver is defective. 8810009020 Screw FH M2.6 x 5 ZK IC-706MKIIG Top cover 10 pieces 6. DO NOT transmit power into a signal generator or a sweep generator. Addresses are provided on the inside back cover for your 7.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 CIRCUIT DESCRIPTION 3 - 1 RECEIVER CIRCUITS ..........................3 - 1 3 - 2 TRANSMITTER CIRCUITS......................... 3 - 4 3 - 3 PLL CIRCUITS ............................3 - 6 3 - 4 LOGIC CIRCUITS ............................
  • Page 4 SECTION 1 SPECIFICATIONS GENERAL RECEIVER • Frequency coverage • Receive system Receive 0.030 – 200.000 MHz* SSB/CW/AM/WFM Double superheterodyne 430.000 – 470.000 MHz* Triple superheterodyne Transmit 1.800 – 1.999 MHz* • Intermediate frequencies 3.500 – 3.999 MHz* MODE 1st IF 2nd IF 3rd IF 7.000 –...
  • Page 5 SECTION 2 INSIDE VIEWS ¡MAIN AND FILTER BOARDS FILTER board D/A converter (IC2201: M62352GP) RX preamplifier MAIN CPU clock (IC151: µPC1658G) (X2161: CR-636) MAIN CPU * HPF board (IC 2001: HD6433337YA56F) 1st mixer (D271: HSB88WSTR) MAIN board 1st IF filter 3rd IF filter for FM * (FI511: FI-261) (FI791: SFPC455E-TC01)
  • Page 6: Circuit Description

    SECTION 3 CIRCUIT DESCRIPTION • Used RF high-pass filter (HPF board) 3-1 RECEIVER CIRCUITS Frequency Control Entrance Frequency Control Entrance 3-1-1 HF/50 MHz RF CIRCUIT signal coil (MHz) signal coil (MHz) (FILTER, MAIN AND HPF BOARDS) 0.03–2 MHz D111 15–22 MHz D151 HF/50 MHz RF filters pass only the desired band signals 2–4 MHz...
  • Page 7 While in WFM mode, the IF signals pass through the low- pass filter (L601, C601–C603), IF amplifiers (Q601, Q611), The preamplifier circuit in the IC-706MKIIG has approx. ceramic filter (FI611). The signals are then applied to the 15dB gain over a wide-band frequency range.
  • Page 8 The S-meter signal from the main CPU (IC2001) is applied to the sub CPU and is then displayed on the S-meter read- In the IC-706MKIIG, the 1st LO frequency is shifted to out. change the 2nd IF because a fixed 2nd LO frequency (60 MHz) is used.
  • Page 9: Transmitter Circuits

    3-1-14 AF SELECTOR SWITCH (MAIN BOARD) Audio signals from the front or rear panel [MIC] connector enter the microphone amplifier IC (IC931, pin 22) and are The AF signals from one of the detector circuits are applied then amplified at the microphone amplifier or speech com- to the AF selector switch (IC861).
  • Page 10 3-2-4 FM MODULATION CIRCUIT (MAIN BOARD) The 144 MHz RF signals from the 1st mixer (D271) via the The microphone signals from Q961 are applied to the limiter low-pass filter (L251–253, C253–259) bypass the filters and amplifier (IC981a) and the splatter filter (IC981b). The 1750 pass through the bandpass filter (L182–L184, L195, L196, Hz European tone signal from the main CPU (IC2001 pin C181–C186, C195–C197) in the MAIN board.
  • Page 11: Pll Circuits

    The “FOR”, “VFOR” and “UFOR” voltages are combined to (3) SWR meter the “FORL” voltage and then applied to IC1091b (pin 6). The The “FORL” and “REFL” voltages are applied to the main “POCV” voltage from the D/A converter (IC2201, pin 3), CPU (IC2001, pins 32 and 36) via the analog switch determined by the RF power setting, is applied to IC1091b (IC2101, pins 11, 13 and 4, 3) respectively.
  • Page 12 3-3-3 2ND LO AND REFERENCE OSCILLATOR 3-3-4 BFO CIRCUIT CIRCUITS The DDS IC (IC901) generates a 10-bit digital signal. The signal is converted into an analog wave signal at the D/A The reference oscillator (X621, Q621) generates a 30.0 converter (R951–R970). The analog wave is passed MHz frequency used for the 1st LO and BFO circuits as a through the high-pass filter and low-pass filter.
  • Page 13: Logic Circuits

    3-4-2 SUB CPU PORT ALLOCATIONS • BFO frequency (DISPLAY board; IC1) RX BFO/3rd LO TX BFO/FM PLL ref. Mode frequency [MHz] frequency [MHz] Port Description number name 9.0130 9.0130 SFTL Input port for the [SHIFT] control. 9.0100 9.0100 Outputs a PTT signal. PTTS 9.0106 9.0106...
  • Page 14 3-4-4 MAIN CPU PORT ALLOCATIONS (MAIN unit; IC2001) (MAIN unit; IC2001)–Continued Port Port Description Description number name number name Input port for the external paddle Outputs 1750 Hz European tone sig- ETON DASK (DASH). nal. Low : During key down Outputs a strobe signal for the option- MSST Input port for the external paddle...
  • Page 15: Adjustment Procedures

    SECTION 4 ADJUSTMENT PROCEDURES 4-1 PREPARATION BEFORE SARVICING REQUIRED TEST EQUIPMENT EQUIPMENT GREDE AND RANGE EQUIPMENT GREDE AND RENGE Output voltage : 13.8 V DC Frequency range : 1 kHz ±10 % DC power supply Distortion meter Current capacity : 30 A or more Measuring range : 1–100 % Measuring range...
  • Page 16: Pll Adjustments

    4-2 PLL ADJUSTMENTS ADJUSTMENT MEASUREMENT POINT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT ADJUST • Display frequency: Any Connect an RF volt- Maximum level L681, REFERENCE FREQUENCY • L623 (PLL unit) : Center meter to check point (0 dB or more) L682 •...
  • Page 17 • PLL AND PA UNITS L601 Reference frequency L623 Reference loop lock CP131 adjustment voltage check point R602 Reference loop lock L682 2nd LO level voltage adjustment adjustment L681 Main loop lock CP401 Reference frequency P681 voltage check point check point C306 Main loop lock C335...
  • Page 18 TRANSMITTER ADJUSTMENTS (continued) ADJUSTMENT MEASUREMENT POINT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT ADJUST • Display frequency: 29.10000 MHz MAIN Connect digital 1.8 V MAIN C1022 FM VCO • Mode : FM multimeter to check • [Q1 RF POWER] : H point CP1011.
  • Page 19 • MAIN UNIT CW carrier level CP921 check point CP1011 FM VCO check point C1022 FM VCO adjustment CP1041 AM modulation check point CW carrier level R921 adjustment AM modulation J281 FM deviation R1002 pre-setting adjustment L511 R999 L512 AM modulation R1042 adjustment Residual AM...
  • Page 20 TRANSMITTER ADJUSTMENTS (continued) ADJUSTMENT MEASUREMENT POINT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT ADJUST IDLING • Display frequency: 14.10000 MHz Connect 0.5 A increase from that R162 CURRENT • Mode : USB ammeter between R162 is in maximum • [Q2 MIC GAIN] : 1 (minimum) the DC power supply counterclockwise posi-...
  • Page 21 • PA UNIT R214 Drive idling adjustment R162 R174 Final idling Idling current J571 R231 adjustment pre-setting R175 • MAIN AND FILTER UNITS SWR detection adjustment SWR detection check point CP1071 SWR detection pre-setting 4 - 7...
  • Page 22: Receiver Adjustments

    4-4 RECEIVER ADJUSTMENTS ADJUSTMENT MEASUREMENT POINT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT ADJUST RECEIVER • Display freq. : 14.10000 MHz Rear Connect an AC milli- Muximum AF output MAIN L731, TOTAL GAIN • Mode : USB Panel voltmeter to the [EXT level L741 SP] jack with an 8 Ω...
  • Page 23 • MAIN UNIT Noise blanler CP632 check point L633 Noise blanler adjustment L621 R741 Receiver total gain L741 WFM receiving L632 adjustment adjustment CP631 WFM receiving L731 check point 4 - 9...
  • Page 24: Set Mode Adjustment

    4-5 SET MODE ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION • Enter adjustment set mode: Push [F-3 (TX)] to enter the TX ENTERING adjustment setting mode. ADJUSTMENT 1 Turn power OFF. SET MODE 2 Terminate the [REMOTE] jack with a Then advance to the following set- 3.5(d) mm mini-plug.
  • Page 25 SET MODE ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION • Enter adjustment set mode: Push [F-2 (RX)] to enter the RX ENTERING ADJUSTMENT 1 Turn power OFF. adjustment setting mode. SET MODE 2 Terminate the [REMOTE] jack with a Then advance to the following set- 3.5(d) mm mini-plug.
  • Page 26: Parts List

    SECTION 5 PARTS LIST [FRONT UNIT] [DISPLAY BOARD] ORDER ORDER DESCRIPTION DESCRIPTION 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ) 2250000290 ENCODER SW-159 (EC24B50B) 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ) 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) 8900006040 CABLE OPC-593 7030003590 S.RESISTOR...
  • Page 27 [DISPLAY BOARD] [DISPLAY BOARD] ORDER ORDER DESCRIPTION DESCRIPTION ERJ3GEYJ 821 V (820 Ω) R116 7030003430 S.RESISTOR 2260002250 S.SWITCH LS22BB-2SD-PG-T ERJ3GEYJ 681 V (680 Ω) R117 7030003420 S.RESISTOR 2260002540 S.SWITCH SKQHFC R118 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 kΩ) 2260002540 S.SWITCH SKQHFC ERJ3GEYJ 681 V (680 Ω) R119...
  • Page 28: Main Board

    [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION IC2221 1130007570 S.IC BU4094BCFV-E2 D132 1790001610 S.DIODE 1SS385 (TE85L) IC2222 1130007570 S.IC BU4094BCFV-E2 D133 1790001250 S.DIODE MA2S111-(TX) IC2231 1130005490 S.IC TC74HC4094AF D141 1790001620 S.DIODE 1SV308 (TPL3) IC2232 1130007570 S.IC BU4094BCFV-E2 D142 1750000640 S.DIODE 1SV312 (TE85L) IC2241 1160000130 S.IC TD62783AF (TP1)
  • Page 29 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION D1113 1160000140 S.DIODE DAP222 TL L256 6200008860 S.COIL ACL2520L-101K-T D1114 1790001610 S.DIODE 1SS385 (TE85L) L257 6200008860 S.COIL ACL2520L-101K-T D1131 1790001330 S.ZENER MA8036-L (TX) L261 6200007720 S.COIL LQN21A 33NJ04 D1132 1160000140 S.DIODE DAP222 TL L262 6200007740 S.COIL LQN21A 47NJ04...
  • Page 30 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION L1044 6200003260 S.COIL NL 322522T-101J R351 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) L2001 6200001830 S.COIL NL 322522T-100J R352 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) L2251 6200003950 S.COIL HF50ACC 322513-T R353 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) L2252...
  • Page 31 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION R643 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ) R829 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R644 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) R830 7030003840 S.RESISTOR ERJ3GEYJ 225 V (2.2 MΩ) R661 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
  • Page 32 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION R992 7030003750 S.RESISTOR ERJ3GEYJ 394 V (390 kΩ) R1115 7030003470 S.RESISTOR ERJ3GEYJ 182 V (1.8 kΩ) ERJ3GEYJ 471 V (470 Ω) R993 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ) R1116 7030003400 S.RESISTOR R994 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ)
  • Page 33 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION R2106 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ) C141 4030011600 S.CERAMIC C1608 JB 1C 104KT-N R2107 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) C153 4030011600 S.CERAMIC C1608 JB 1C 104KT-N R2108 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ) C155 4030011600 S.CERAMIC...
  • Page 34 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION C373 4030006960 S.CERAMIC C1608 CH 1H 050C-T-A C566 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C374 4030006960 S.CERAMIC C1608 CH 1H 050C-T-A C567 4030011280 S.CERAMIC C1608 CH 1H 271J-T-A C375 4030006960 S.CERAMIC C1608 CH 1H 050C-T-A C571 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A...
  • Page 35 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION C736 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C940 4510004630 S.ELECTROLYTIC ECEV1CA100SR C741 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A C941 4510004430 S.ELECTROLYTIC ECEV1CV220WR C742 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A C942 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C743 4030011600 S.CERAMIC...
  • Page 36 [MAIN BOARD] [MAIN BOARD] ORDER ORDER DESCRIPTION DESCRIPTION C2002 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A J551 6510007020 CONNECTOR TMP-J01X-V6 C2003 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A J701 6450001560 CONNECTOR PD-72 C2004 4030011600 S.CERAMIC C1608 JB 1C 104KT-N J702 6450001560 CONNECTOR PD-72 C2011 4030007090 S.CERAMIC...
  • Page 37: Pll Unit

    [HPF BOARD] [HPF BOARD] ORDER ORDER DESCRIPTION DESCRIPTION L121 6200002040 S.COIL NL 252018T-101J C156 4030007170 S.CERAMIC C1608 CH 1H 221J-T-A L122 6200007170 S.COIL MLF1608A 3R3K-T C161 4030011600 S.CERAMIC C1608 JB 1C 104KT-N L123 6200003550 S.COIL MLF1608A 4R7K-T C162 4030007170 S.CERAMIC C1608 CH 1H 221J-T-A L124 6200002040 S.COIL...
  • Page 38 [PLL UNIT] [PLL UNIT] ORDER ORDER DESCRIPTION DESCRIPTION Q621 1530002560 S.TRANSISTOR 2SC4403-3-TL L642 6200004670 S.COIL NL 252018T-3R9J Q661 1530002560 S.TRANSISTOR 2SC4403-3-TL L681 6150004830 S.COIL LS-509 Q681 1530002560 S.TRANSISTOR 2SC4403-3-TL L682 6150004830 S.COIL LS-509 Q851 1590001330 S.TRANSISTOR DTA114EUA T106 L711 6200002160 S.COIL ELJNC 82NK-F Q931 1530002060 S.TRANSISTOR...
  • Page 39 [PLL UNIT] [PLL UNIT] ORDER ORDER DESCRIPTION DESCRIPTION RR0816P-101-D (100 Ω) R170 7030005370 S.RESISTOR RR0816P-202-B (2 kΩ) R411 7030009690 S.RESISTOR R171 7030005380 S.RESISTOR RR0816P-102-B (1 kΩ) R412 7030006580 S.RESISTOR RR0816P-122-D (1.2 kΩ) R172 7030005370 S.RESISTOR RR0816P-202-B (2 kΩ) R461 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R173 7030005380 S.RESISTOR...
  • Page 40 [PLL UNIT] [PLL UNIT] ORDER ORDER DESCRIPTION DESCRIPTION R956 7030005380 S.RESISTOR RR0816P-102-B (1 kΩ) C203 4030011600 S.CERAMIC C1608 JB 1C 104KT-N R957 7030005400 S.RESISTOR RR0816P-202-D (2 kΩ) C204 4030007170 S.CERAMIC C1608 CH 1H 221J-T-A R958 7030005390 S.RESISTOR RR0816P-102-D (1 kΩ) C205 4030009110 S.CERAMIC C3216 JB 1C 474K-T-A...
  • Page 41 4030007040 S.CERAMIC C1608 CH 1H 180J-T-A 8970023261 M.OTHER SX2177 1.5D COAXIAL-1 (2)/PL C814 4030006930 S.CERAMIC C1608 CH 1H 020C-T-A 8970023300 M.OTHER SX2177 ICOM SHIELD (1)/PL C815 4030007010 S.CERAMIC C1608 CH 1H 100D-T-A C821 4030007060 S.CERAMIC C1608 CH 1H 270J-T-A C822 4030007020 S.CERAMIC...
  • Page 42: Pa Unit

    [PA UNIT] [PA UNIT] ORDER ORDER DESCRIPTION DESCRIPTION Q101 1560001090 S.FET 2SK2854 L102 6200005050 S.COIL NL 252018T-330J Q121 1590002640 S.FET MXR9745RT1 L103 6200008570 S.COIL LQN21A 6N8D04 Q171 1590002690 FET SRFJ7044 L104 6200005730 S.COIL ELJRE 39NG-F Q172 1590002690 FET SRFJ7044 L105 6200002860 S.COIL NL 252018T-4R7J Q231...
  • Page 43 [PA UNIT] [PA UNIT] ORDER ORDER DESCRIPTION DESCRIPTION ERJ3GEYJ 390 V (39 Ω) R122 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ) R463 7030003270 S.RESISTOR R123 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) R464 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) ERJ3GEYJ 561 V (560 Ω) ERJ3GEYJ 120 V (12 Ω) R124...
  • Page 44 [PA UNIT] [PA UNIT] ORDER ORDER DESCRIPTION DESCRIPTION C195 4030011160 S.CERAMIC GRM42-6 CH 150J 500PT C409 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C196 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A C410 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A C197 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A C411 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A...
  • Page 45: Filter Board

    [PA UNIT] [FILTER BOARD] ORDER ORDER DESCRIPTION DESCRIPTION C676 4030011600 S.CERAMIC C1608 JB 1C 104KT-N 1110002700 S.IC NJM2904M-T1 C677 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C678 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C679 4030011600 S.CERAMIC C1608 JB 1C 104KT-N 1590000680 S.TRANSISTOR DTC114EUA T106 C680 4030011600 S.CERAMIC...
  • Page 46 [FILTER BOARD] [FILTER BOARD] ORDER ORDER DESCRIPTION DESCRIPTION 6200002040 S.COIL NL 252018T-101J 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A 6200003550 S.COIL MLF1608A 4R7K-T 4010005360 CERAMIC HM11SJ SL 301J 500V 6200002040 S.COIL NL 252018T-101J 4010007590 CERAMIC HM15SJ SL 681J 500V 6200002040 S.COIL NL 252018T-101J 4010005930 CERAMIC HM11SJ SL 391J 500V...
  • Page 47: Driver Board

    [FILTER BOARD] [FILTER BOARD] ORDER ORDER DESCRIPTION DESCRIPTION C122 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A 6330001330 RELAY AG 201344 C123 4030008680 S.CERAMIC C2012 JF 1C 105Z-T-A 6330001430 RELAY NA-12W-K C124 4030011600 S.CERAMIC C1608 JB 1C 104KT-N 6330001430 RELAY NA-12W-K C125 4030011600 S.CERAMIC C1608 JB 1C 104KT-N 6330001150 RELAY...
  • Page 48 SECTION 6 MECHANICAL PARTS AND DISASSEMBLY [CHASSIS PARTS] [FRONT PARTS] REF. NO. ORDER NO. DESCRIPTION QTY. REF. NO. ORDER NO. DESCRIPTION QTY. 2250000290 Encorder SW-159 (EC24B50B) 6510000370 Connector MR-DS [ANT1] 6510000370 Connector MR-DS [ANT2] 8900006040 Flat cable OPC-593 8900006250 Cable OPC-610 8900008850 OPC-874 8900008860...
  • Page 49 [MAIN BOARD] [FILTER BOARD] REF. NO. ORDER NO. DESCRIPTION QTY. REF. NO. ORDER NO. DESCRIPTION QTY. 8510011950 2177 HPF case 6450001490 Connector HLJ7001-01-3010 [ELEC-KEY] 8510005990 724 shield case cover 6450001640 Connector TCS5044-01-4111 [ACC] 8510012400 1691 D/A case 2177 D/A case 6450001650 Connector HSJ0836-01-500 [REMOTE] 8930014140...
  • Page 50 MP10 (FR) MP11 (FR) MP4 (FR) MP5 (FR) MODE i706MK™G RF/SQL HF/VHF/UHF TRANSCEIVER MP6 (FR) BAND POWER P.AMP/ATT VFO A 60dB TUNER/CALL RIT/ MP18 (FR)+ M1 SPL A/B A=B DISPLAY MP20 (FR) M-CH SHIFT PHONES LOCK J2 (D) BAND MENU MP26 (FR) MP8 (FR)+MP12 (FR)+MP13 (FR)+MP14 (FR) MP11 (FR)
  • Page 51 MP28 (C) J4 (FL) MP62 (C) W3 (C) J8 (FL) W2 (C) J11 (FL) J7 (FL) MP40 (C) J5 (FL) SP1 (C) W15 (C)+MP86 (C) MP3 (M)+MP14 (M) MP8 (M) MP3 (FL) MP2 (M) MP1 (M) MF1 (C) MP7 ( M) J14 (FL) W1 (C)+MP85 (C) MP19 (C)
  • Page 52 SECTION 7 SEMI-CONDUCTOR INFORMATION • TRANSISTOR AND FET’S • DIODES 2SA1576 R 2SA1577 Q 2SB1123T 2SB1132R 2SB1143 S 1SS302 1SS355 1SS375 1SS385 1SV237 (Symbol: FR) (Symbol: FR) (Symbol: BF) (Symbol: BA) (Symbol: C3) (Symbol: A) (Symbol: FH) (Symbol: 09) (Symbol: BB) 2SC4081 R 2SC4116 GR 2SC4213 B...
  • Page 53 SECTION 8 BOARD LAYOUT 8-1 DISPLAY BOARD • DISPLAY BOARD (TOP VIEW) LRXD LTXD (FRONT) MICE • VR BOARD TO FRONT UNIT W2 RF/SQL PHONES TO VR SPEAKER BOARD J1 TO DISPLAY BOARD SHIFT M-CH 8 - 1...
  • Page 54 • DISPLAY BOARD (BOTTOM VIEW) MODE POWER P.AMP/ATT TUNER/CALL RIT/SUB DISP LOCK MENU PHONES 8 - 2...
  • Page 55 8-2 MAIN BOARD • MAIN BOARD (TOP VIEW) J401 J461 TO PA UNIT J661 TO FILTER UNIT J2061 MSST J431 SPBK TO FILTER UNIT SPCH TO OPTIONAL UNIT UT-102 J1381 DRES PDST CON2 CON1 CON0 PBST MLLV AFGC TO PLL UNIT DSPS J254 AFBP...
  • Page 56 • MAIN BOARD (BOTTOM VIEW) 60 61 8 - 4...
  • Page 57 8-6 HPF AND DRIVER BOARDS • HPF BOARD (TOP VIEW) TO MAIN UNIT J1 J101 • DRIVER BOARD (TOP VIEW) TO PA UNIT TO PA UNIT J210 J160 J200 J100 J201 J101 TO PA UNIT TO PA UNIT J211 J161 8 - 5...
  • Page 58 • HPF BOARD (BOTTOM VIEW) • DRIVER BOARD (BOTTOM VIEW) 8 - 6...
  • Page 59 8-4 PA UNIT • PA UNIT (TOP VIEW) J661 TO MAIN J401 J612 J611 ETKY ETKY J621 ETST ETST ET14 ET14 TO PLL J252 TO MAIN UNIT J141 P481 P101 TO MAIN UNIT J231 L174 J601 J160 J161 TO DRIVE TO DRIVE BOARD BOARD...
  • Page 60 • PA UNIT (BOTTOM VIEW) 8 - 8...
  • Page 61 8-3 PLL UNIT • PLL UNIT (TOP VIEW) TO MAIN J281 TO MAIN J791 P991 TO PA UNIT J621 P891 J252 TO MAIN J1431 J254 DRES PDST CON2 CON1 CON0 PBST MLLV AFGC DSPS AFBP POWS DINT IMST FSKK TO MAIN J1381 P681 J253...
  • Page 62 • PLL UNIT (BOTTOM VIEW) 8 - 10...
  • Page 63 8-5 FILTER UNIT • FILTER UNIT (TOP VIEW) BOTA SENO1 AFOUT 138A SENO2 DOUT PTTP MODA SQSA 10 6 9 5 TO MAIN UNIT J461 TO MIC RTTY REMOTE DATA (HPAO) (HRX) TO PA UNIT J172 TO MAIN BOARD J101 TO MAIN BOARD J431 8 - 11...
  • Page 64 • FILTER BOARD (BOTTOM VIEW) 8 - 12...
  • Page 65: Block Diagram

    SECTION 9 SECTION 9 BLOCK DIAGRAM BLOCK DIAGRAM FI511 ATT D522 ATT D521 FL-261 FILTER UNIT ATT D572 XTAL HFOR CTRL BUFF IC521 FI561 1.6 MHz D561 MA862 D271 10 dB Q111 DTC114EE 0.03-2.0 MHz IC571 D551 HPF BOARD µPC1688 69.0115 MHz IC1B D562 MA862...
  • Page 66 SECTION 10 VOLTAGE DIAGRAM SECTION 10 VOLTAGE DIAGRAM ¡ ¡ FRONT UNIT • FRONT UNIT VR BOARD RV-300 (AF) R9 10k PRAK R117 R123 390 (RF/SQL) DAP222 MENK (MENU) (P.AMP R118 R124 390 (RIT) /ATT) 1.5k R125 390 (PHONE) DLC-8309YBGF (F-1) (SHIFT) PRED...
  • Page 67 • MAIN UNIT MAIN (1) 4.6 V 40.0—59.999999 MHz 11.6V 2.0—3.999999 MHz 4.6 V 22.0—29.999999 MHz 11.6 V 4.0—7.999999 MHz 4.6 V 8.0—14.999999 MHz 4.6 V D351 0.03—1.999999 MHz J101 DAN221 15.0—21.999999 MHz 4.6 V L195 D191 L197 C193 C195 L194 R194 30.0—39.999999 MHz...
  • Page 68 ¡ ¡ MAIN UNIT ¡MAIN UNIT MAIN (2) MAIN UNIT (1) WFM: 4.2 V WFM: 4.2 V WFM: 0.95 V C501 L501 C503 L503 C506 L602 L603 AT13 L435 4.7uH D500 WFM: 0 V WFM: 1.25 V R619 AT13 1SV308 0.56uH 0.56uH 0.0047...
  • Page 69 • MAIN UNIT MAIN (3) MAIN UNIT (2) DRIV DRIV HFOR HFOR VFOR VFOR UFOR UFOR AMS8 HREF HREF WFMB VREF VREF UREF UREF STRT STRT C899 R912 R913 D772 R772 CIVE CIVE 0.001 100k IC811b MA2S111 D732 FSKK BAND FSKK UMC3N DASH...
  • Page 70 MAIN UNIT (4) AMS8 WFM8 5.9 V FMS8 D732 UMC3N UNF8 D721 FI671 3.9 V C662 C571 MA862 FL-272 0.0047 0.0047 5.8 V C741 6.1 V 0.0047 C722 R722 5.6k L741 L731 D672 D671 LS-516 LS-516 MA862 MA862 Q721 2SC4081 R673 Q731 2F23...
  • Page 71 • MAIN UNIT MAIN (3) MAIN UNIT (2) DRIV DRIV HFOR HFOR VFOR VFOR MAIN UNIT (4) UFOR UFOR AMS8 HREF HREF WFMB VREF VREF UREF UREF STRT STRT AMS8 WFM8 C899 R912 R913 D772 R772 CIVE 5.9 V CIVE 0.001 100k IC811b...
  • Page 72 • MAIN UNIT MAIN (4) R2003 1k LRXD LTXD R2002 1k SNDS SNDSR R2001 W2001 MODS Q2001 DTA114EE R2011 FMST R2012 PR4S WFMS R2013 PR3S MINH D2001 R2014 PR2S UNFM DA221 R2015 PR1S AFS1 R2016 D96S AFS2 IC2221 R2017 ATTS BU4094BCFV R2018 R2004...
  • Page 73 MAIN UNIT(3) L2251 HF50ACC322513-B L2252 HF50ACC322513-B STRT STRT SQLS SQLS POWS POWS IC2241 TD62783AF 0VDV 0VDV MODS MODS R2245 220 DASH DASH WFMS 1S15 MINH MINH CIVE CIVE UNFM LRXD LRXD AFS1 AFS1 WFMS LTXD LTXD AFS2 AFS2 UNFM SNDSR SNDSR FMST IFST...
  • Page 74 • MAIN UNIT MAIN (4) MAIN UNIT(3) L2251 HF50ACC322513-B LRXD R2003 1k LTXD R2002 1k L2252 HF50ACC322513-B STRT STRT SQLS SQLS POWS POWS SNDS SNDSR IC2241 TD62783AF 0VDV R2001 W2001 0VDV MODS MODS Q2001 DTA114EE R2011 FMST R2245 220 DASH DASH R2012 PR4S...
  • Page 75 • PA UNIT DRIVER R178 13.7 V 13.8 V L171 Q171 LR-322B C172 SRFJ7044 J161 J160 Q100 0.0068 D101 L104 L105 C141 L141 L142 L143 R124 39nH 4.7uH MRF1508 MA77 0.1uH 0.18uH 0.15uH P2T8 R182 0.68 C161 C115 C145 C147 R166 L103 C121...
  • Page 76 C187 J172 0.68 R178 13.7 V HPAO FILTER EP601 W601 Q171 SRFJ7044 W602 P601 R182 EP602 W603 0.68 L175 L173 LR-376 LA-262 W604 R591 R183 F591 F593 F592 0.68 RL591 C196 0.001 S-N5054 FGB4A S-N5054 JV-12-KT CP611 CP612 CP613 CP614 C197 0.001 J612 Q172...
  • Page 77 • PA UNIT DRIVER C187 J172 0.68 R178 13.7 V HPAO FILTER EP601 13.8 V W601 L171 Q171 J161 LR-322B C172 SRFJ7044 W602 J160 Q100 0.0068 D101 L104 L105 R124 C141 L141 L142 L143 MA77 39nH 4.7uH 0.1uH 0.18uH 0.15uH MRF1508 P2T8 P601...
  • Page 78 • FILTER UNIT CP101 C189 C190 LA-246 LA-236 4.0~7.999999 M MAIN (1) LR-216 LR-216 7MHz CONNECT:4.2 2SC4081 J101 NO CONNECT DTA114EE 0.75p 1SV312 MA2S111 C184 C185 AG20B44 MZ-12D-K 100uH MZ-12D-K 100p 30.0~59.99 CONNECT NO CONN C6 0.0047 100uH C16 0.0047 50MHz 2SC4081 1SS302...
  • Page 79 C136 0.68 HOUT [ANT1] 4.0~7.999999 MHZ CONNECT:4.2 V 7MHz 2SC4081 NO CONNECT:0 V LR-391 30.0~59.999999 MHZ CONNECT:4.2 V NO CONNECT:0 V 50MHz 2SC4081 1SS375 1SS375 22.0~29.999999 MHZ CONNECT:4.2 V NO CONNECT:0 V 470p 470p 24MHz 2SC4081 28MHz ATT ON:11.5 V ATT OFF:0 V 8.0~14.999999 MHZ CONNECT:4.2 V...
  • Page 80 • FILTER UNIT CP101 C136 0.68 C190 C189 HOUT LA-246 LA-236 [ANT1] 4.0~7.999999 MHZ MAIN (1) LR-216 LR-216 CONNECT:4.2 V 7MHz 2SC4081 J101 NO CONNECT:0 V DTA114EE 0.75p 1SV312 C184 C185 100uH MA2S111 AG20B44 MZ-12D-K MZ-12D-K 100p LR-391 30.0~59.999999 MHZ CONNECT:4.2 V C6 0.0047 100uH...
  • Page 81 • PLL UNIT R135 1k L30 100uH C2 30p C5 150p R13 100k R12 100 R11 47 CP131 3.3 V R133 C133 2SK210 L303 C301 L301 LB-343 LW-25 470p LW-25 P251 J251 R302 L302 C308 150p E544GN-110248 AFIE 150p AFOE 2.5 V C303 0.0047...
  • Page 82 3.3 V L301 LW-25 L391 10uH R701 LOF1 R501 R302 L302 C391 3.9 V Q391 D701 E544GN-110248 2SC4116 MA862 0.03—29.999999 MHz CONNECT PHONE:4.9 V NO CONNECT PHONE:0 V C304 D302 2.0 V 7.7 V D731 MA77 L711 C512 L712 L713 R517 MA862 82nH...
  • Page 83 • PLL UNIT L30 100uH C2 30p R135 1k C5 150p R13 100k R12 100 R11 47 CP131 3.3 V R133 C133 2SK210 L303 C301 L301 LB-343 LW-25 470p LW-25 L391 10uH R701 P251 J251 LOF1 R302 R501 C308 L302 C391 3.9 V Q391...
  • Page 84 08190 Sant Cugat del Valles Barcelona, SPAIN Phone : ( 93 ) 590 26 70 Fax : ( 93 ) 589 04 46 A Division of Icom America Inc. 3071 #5 Road, Unit 9, Richmond, B.C., V6X 2T4, Canada : http://www.icomspain.com...
  • Page 85 A-5564HI-S 6-9-16, Kamihigashi, Hirano-ku Osaka 547-0002, Japan C 1999 by Icom Inc.

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