Icom IC-2300H Service Manual Addendum
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Icom IC-2300H Service Manual Addendum

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See also: Instruction Manual , Instructions
Feb. 2012
SERVICE MANUAL
ADDENDUM
CONTENTS
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Voltage Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 8

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  • Page 1 Feb. 2012 SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST ....... . 1 BOARD LAYOUTS .
  • Page 2 Feb. 2012 SECTION 6 SECTION 6. PARTS LIST [LOGIC UNIT] [LOGIC UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1110006470 S.IC LMV324IPWR 27.5/17.6 7030005160 S.RES ERJ2GEJ 105 X (1M) 93.3/8.9 1110007620 S.IC NJU7704F3-42A-TE1-#ZZZB 111.6/23.2 7030005600 S.RES ERJ2GEJ 273 X (27K) 32.1/21.7 1130016260 S.IC BR24T64FVT-WE2 113.2/4.1...
  • Page 3 Feb. 2012 [LOGIC UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 4030016790 S.CER C1005 JB 1E 103K-T 96.5/5.0 1130011760 S.IC CD4094BPWR 44.3/4.4 4030016970 S.CER C1005 JB 1E 223K-T 56.6/8.1 1110007720 S.IC AA32416A <SLVJ> 95.9/11.4 4030016930 S.CER C1005 JB 1A 104K-T 34.9/17.6 1130007021 S.IC TC7S66FU(TE85LF)
  • Page 4 Feb. 2012 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 6050012830 S.XTA CR-875 TTS14VSB-A3 15.3 MHz 64.7/14.0 7030005040 S.RES ERJ2GEJ 472 X (4.7K) 21.7/39.2 6070000300 S.DIS JTBM450CX24 <JJE> 93.5/5.2 7030005710 S.RES ERJ2GEJ 121 X (120) 23.2/40.8 7030004970 S.RES ERJ2GEJ 470 X (47) 22.0/41.3 7030005230 S.RES ERJ2GEJ 334 X (330K) 18.8/2.9...
  • Page 5 Feb. 2012 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R216 7030005050 S.RES ERJ2GEJ 103 X (10K) 19.4/21.5 4030017460 S.CER C1005 JB 1H 102K-T 92.4/7.0 R217 7030005090 S.RES ERJ2GEJ 104 X (100K) 23.3/22.2 4030016930 S.CER C1005 JB 1A 104K-T 73.4/16.9 R218 7030000100 S.RES MCR10EZHJ 4.7 (4R7)

  • Page 6: Main Unit

    Feb. 2012 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C229 4030016790 S.CER C1005 JB 1E 103K-T 89.8/13.6 6910018460 S.BEA MMZ1005Y102C-T 24.8/51.5 C230 4030017460 S.CER C1005 JB 1H 102K-T 76.9/22.0 6910014730 S.BEA MPZ2012S331A-T 34.7/64.6 C232 4030016930 S.CER C1005 JB 1A 104K-T 91.8/18.1 6910020610 S.BEA BLM15BD102SN1D...
  • Page 7 Feb. 2012 SECTION 8. SECTION 8. BOARD LAYOUTS • LOGIC UNIT (TOP VIEW) The combination of top side and bottom side of this [DIAL] • MAIN UNIT (TOP VIEW) – [EXT SP] C225 C172 R157 C179 C216 R134 C222 R132 C245 C241 C184...
  • Page 8 Feb. 2012 The combination of top side and bottom side of this • LOGIC UNIT (BOTTOM VIEW) • MAIN UNIT (BOTTOM VIEW) J1 (CHASSIS) NOIS DETO SW5V IDET SW5V SW5V EXTCK DASTB MODIN UNLK C307 PLLSTB R188 DATA PLLCK PLLDATA C315 EXTDATA R130...
  • Page 9 Feb. 2012 SECTION 10 SECTION 10. VOLTAGE DIAGRAM • LOGIC UNIT 150K C;2.4V 0.047 0.056 C;2.4V 120K C;2.4V TXAF 1 I/O1 2 O/I1 CONT1 3 O/I2 0.01 100K C;2.4V CONT4 0.018 R103 4 I/O2 EC12E24204A9 0.0022 I/O4 150K 1.5M CTCSS R575 O/I4 CONT2...
  • Page 10 FM TRANSCEIVER S-14811XZ-C1 Dec. 2011...
  • Page 11 8. READ the instructions of the test equipment throughly before connecting it to the transceiver. Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.

  • Page 12: Table Of Contents

    TABLE OF CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTION SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS............4-1 TRANSMITTER CIRCUITS .

  • Page 13: Specifications

    SECTION 1. SPECIFICATIONS M GENERAL M TRANSMITTER • Modulation system : Variable reactance frequency mod. • Frequency coverage (unit: MHz) • Output power (approximately) : Tx: 144–148/Rx: 136–174* Export Tx: 136–174*/Rx: 136–174* USA, Export Taiwan Korea Taiwan, Korea Tx/Rx: 144–146 65 W 24 W 50 W...
  • Page 14 SECTION 2. INSIDE VIEWS • LOGIC UNIT EEPROM (IC5) (IC1) CPU CLOCK (X1) SHIFT REGISTER SHIFT REGISTER (IC29) (IC30) ANALOG SWITCH (IC6) AF LPF/HPF (IC3) ANALOG SWITCH (IC28) 2 - 1...
  • Page 15 • MAIN UNIT (TOP VIEW) AF POWER AMP (IC7) PRE-DRIVE AMP (Q22) DRIVE AMP (Q26) TCXO (X1) D/A CONVERTER (IC5) APC AMP (IC9) DISCRIMINATOR (X2) 2ND IF FILTER (For wide mode) (FI1) 2ND IF FILTER (For narrow mode) (FI2) 2 - 2...
  • Page 16 • MAIN UNIT (BOTTOM VIEW) 8 V REGULATOR (IC6) AF POWER AMP 5 V REGULATOR (IC7) (IC8) SHIF REGISTER (IC2) PLL IC (IC1) POWER AMP (Q29) 1ST IF FILYER (FI3) IF IC (IC3) 2 - 3...
  • Page 17 SECTION 3. DISASSEMBLY INSTRUCTION REMOVING THE FRONT PANEL REMOVING THE MAIN UNIT 1) Remove [DIAL] from the front panel. 1) Remove 8 screws from the top cover, and then re- 2) Remove 2 hex screws from the front panel. move the top cover from the chassis. Screws Top cover [DIAL]...
  • Page 18 REMOVING THE MAIN UNIT (Conitunued) 5) Unsolder 3 points at the antenna connector. UNSOLDER Solder remover MAIN UNIT MAIN UNIT MAIN UNIT MAIN UNIT MAIN UNIT 6) Remove the total of 13 screws from the MAIN UNIT. 4 screws 9 screws MAIN UNIT MAIN UNIT MAIN UNIT...

  • Page 19: Circuit Description

    SECTION 4. CIRCUIT DESCRIPTION 2ND IF CIRCUITS 4-1 RF CIRCUITS The 1st IF signal from the 1st IF circuits is applied to the IF The RX signal from the antenna is passed through the LPF IC (IC3). (L36, L39, L41, L42, C291, C295, C296, C298, C300, C303, C304, C306, C307), antenna SW (D29–D32) and tuned BPF The IF IC contains the 2nd mixer, 2nd IF AMP, detector, and (D23, L34, C279), and then applied to the RF AMP (Q32).
  • Page 20 RX AF CIRCUITS 4-2 TX AF CIRCUITS The demodulated AF signal from the MAIN UNIT is passed The AF signal from the microphone (MIC signal) is applied to through the HPF (IC3c), AF line SW (IC6), LPF (IC3d), AF the MIC AMP (IC3a), through the [MIC] jack. The amplifi ed line SW (IC6), another AF line SW (IC28) and the electronic MIC signal is passed through the AF line SW (IC28) and the volume (IC25) for adjustment in level.

  • Page 21: Frequency Synthesizer

    4-3 FREQUENCY SYNTHESIZER The 2300H has two VCOs; TX VCO and RX VCO. The output signal from each VCO is passed through the buf- fer (Q17) and applied to the PLL IC (IC1). While transmitting, the TX VCO (Q13, D7–D9, L5) is activat- ed.

  • Page 22: Port Allocations

    4-5 PORT ALLOCATIONS • CPU (LOGIC UNIT: IC1) Line Line Description Description Name Name [PTT] input. MICSEL Microphone connection detect. H= Pushed. TONE DTMF/BEEP/1750Hz tone signal. Microphone connection detect. Tone signal (CTCSS/DTCS) encoding REMO CTCOUT H=Connected. output. CPU (LOGIC UNIT: IC1) reset signal. RESET H=The CPU is reset.

  • Page 23: Adjustment Procedure

    SECTION 5. ADJUSTMENT PROCEDURE 5-1 PREPARATION REQUIRED EQUIPMENT EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Modifi ed 8-pin modular plug. JIG cable Measuring range : 0.1–30 W* See the illustration shown below.) RF power meter : 0.1–70 W** Range : 0.1–300 MHz (50 Ω...

  • Page 24: Entering Adjustment Mode

    5-1 PREPARATION (continued) ENTERING THE ADJUSTMENT MODE 1) Turn OFF the power. 2) Connect the JIG cable (See page 6-1) to the microphone connector. [SET] and [MONI] 3) While holding down , turn ON the power. Push to turn ON the power. S.MW BANK [SET]...

  • Page 25: Transmit Adjustments

    5-3 TRANSMIT ADJUSTMENTS 1) Select an adjustment item using [BANK] or [V/MHz]. 2) Set or modify the adjustment value as specifi ed using [DIAL], and then push [S.MW]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM TX OUTPUT 1 NOTE: Rotating [DIAL] in the TX adjustment mode without actually transmitting will result in an inac- POWER curate adjustment.

  • Page 26: Receive Adjustments

    5-4 RECEIVE ADJUSTMENTS 1) Select an adjustment item using [BANK] or [V/MHz]. 2) Set or modify the adjustment value as specifi ed using [DIAL], and then push [S.MW]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM RX SENSITIVITY 1 NOTE: "RX SENSITIVITY" must be adjusted before "S-METER." And when "RX SENSITIVITY" is re- -Band low- adjusted, "S-METER"...

  • Page 27: Parts List

    SECTION 6. PARTS LIST [LOGIC UNIT] [LOGIC UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1140015980 S.IC R5F2L3AACNFP 100.25/17.1 7030005160 S.RES ERJ2GEJ 105 X (1M) 93.3/8.9 1110006470 S.IC LMV324IPWR 27.5/17.6 7030005600 S.RES ERJ2GEJ 273 X (27K) 32.1/21.7 1110007620 S.IC NJU7704F3-42A-TE1-#ZZZB 111.6/23.2 7030005160 S.RES ERJ2GEJ 105 X (1M) 32.9/18.4 1130016260 S.IC...
  • Page 28 [LOGIC UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 4030016790 S.CER C1005 JB 1E 103K-T 96.5/5.0 1140005991 S.IC MB15A02PFV1-G-BND-ERE1 56.65/16.5 4030016970 S.CER C1005 JB 1E 223K-T 56.6/8.1 1130011760 S.IC CD4094BPWR 44.3/4.4 4030016930 S.CER C1005 JB 1A 104K-T 34.9/17.6 1110007720 S.IC AA32416A <SLVJ>...
  • Page 29 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 6200011031 S.COI ELJRF R10JFB 81.6/23.9 R108 7030004980 S.RES ERJ2GEJ 101 X (100) 26.4/51.5 6200012860 S.COI 0.20-0.7-4TR 6.5N <COMO> 44.7/51.6 R109 7030005060 S.RES ERJ2GEJ 333 X (33K) 34.3/53.1 6200012860 S.COI 0.20-0.7-4TR 6.5N <COMO> 44.7/57.9 R110 7030007290 S.RES ERJ2GEJ 222 X (2.2K)
  • Page 30 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 4030017430 S.CER C1005 CH 1H 101J-T 86.3/16.5 C137 4030017460 S.CER C1005 JB 1H 102K-T 36.0/49.8 4030017460 S.CER C1005 JB 1H 102K-T 10.6/34.3 C138 4030017460 S.CER C1005 JB 1H 102K-T 19.8/49.6 4030019990 S.CER C1005 JB 1C 104K-T 15.5/28.9 C139...
  • Page 31 [MAIN UNIT] PARTS DESCRIPTION LOCATION C271 4030017460 S.CER C1005 JB 1H 102K-T 78.9/30.6 C272 4030011060 S.CER GRM31M2C2H4R0CY21L (GRM42-6 CH) 92.1/43.5 C274 4030011060 S.CER GRM31M2C2H4R0CY21L (GRM42-6 CH) 92.1/41.4 C275 4030017460 S.CER C1005 JB 1H 102K-T 86.4/27.9 C276 4030017460 S.CER C1005 JB 1H 102K-T 112.0/19.5 C277 4030017460 S.CER C1005 JB 1H 102K-T...

  • Page 32: Board Layouts

    SECTION 7. MECHANICAL PARTS [CHASSIS PARTS] [ACCESSORIES] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. 8600036881 SP CABLE-1 (FX2493 P01LO) 5210000080 FGB 20A (FGB0 125V) 6510004881 MR-DSE-01-1 <GA> (Optional) HM-133V 2510001160 057P0802 8900016610 OPC-1132A ACC 8010019260 2633 MOBILE BRACKET MOQ 8010022230 3251 CHASSIS <STM> 8110010130 3251 COVER ASSEMBLY 8820000530 FLANGE BOLT M4 X 8 NI 8930083860 3251 SP RUBBER <KRI>...
  • Page 33 MP7(CH)x8 MP2(CH) MP6(L)x4 MP7(L) SP1(CH) LOGIC UNIT W1(M) MP3(CH) W1(CH) MP2(L) MP5(L) EP9(L) MP9(CH) x4 MAIN UNIT W6(M) MP3(L) DS1(L) MP6(CH) x9 MP1(L) W1(M) MP6(CH) MP4(CH) J1(CH) MP4(L) MP9(L) Viewing from the rear. MP1(CH) MP8(L) MP8(CH) MP1(L) MP11(L) 7 - 2...
  • Page 34 SECTION 8. BOARD LAYOUTS • LOGIC UNIT (TOP VIEW) The combination of top side and bottom side of this [DIAL] • MAIN UNIT (TOP VIEW) – [EXT SP] C225 C172 R157 C179 C216 R134 C222 R132 C245 C241 C184 C321 C182 C163 C178...
  • Page 35 The combination of top side and bottom side of this • LOGIC UNIT (BOTTOM VIEW) • MAIN UNIT (BOTTOM VIEW) J1 (CHASSIS) NOIS DETO SW5V IDET SW5V SW5V EXTCK DASTB MODIN UNLK C307 PLLSTB R188 DATA PLLCK C315 PLLDATA EXTDATA R130 EXTSTB R197...
  • Page 36 SECTION 9. BLOCK DIAGRAM SW5V SW5V VCO8 IDET(CPU A/D) MAIN UNIT PLLSW(EXP) LVIN(CPU A/D) SHIFT(EXP) DC AMP LOOP VCOR8 VCOT8 CURRENT PAHV RX/Tx;136.000-174.000MHz Q6-Q8 ANTENNA VCO8 SW5V SURGE IC9d PROTECT REFMOD(D/A) (15.3MHz) LOOP TX/RX DRIVE BUFF BUFF DRIVE FC(D/A) Q14,D10-D11 IC10 D12-D13 D24-D25...

  • Page 37: Voltage Diagram

    SECTION 10. VOLTAGE DIAGRAM • LOGIC UNIT 150K C;2.4V 0.047 0.056 C;2.4V 120K C;2.4V TXAF 1 I/O1 2 O/I1 CONT1 0.01 100K C;2.4V 3 O/I2 CONT4 0.018 R103 4 I/O2 EC12E24204A9 I/O4 0.0022 150K CTCSS 1.5M R575 CONT2 O/I4 0.01 0.0027 CONT3 O/I3...
  • Page 38 • MAIN UNIT (1/2) T;7.7V R;0.0V T;0.0V L2SC4081 R;6.7V C;6.8V LDTA123YET VCOV 100K L2SC4081 T;6.3V L2SC4081 R;0.0V RX VCO 3179 IC10 C125 L2SC4081 UPC2709TB 0.001 SHIFT C113 0.001 2SC4226 C;4.8V HVD144A MLG1608S 2SC4228 1.2K 1.2K REF 15.3MHz MB15A02PFV1-G-BND-ERE1 0.001 0.001 OSCIN 0.001 OSCOUT...
  • Page 39 R182 T;7.7V R;0.0V • MAIN UNIT (2/2) T;12.9V(Hi) C314 VC060318A400RP 13.3V(Mid) 120P 13.5V(MidLow) 13.5V(Low) C201 R;13.7V AS080440-22N 120P C281 330P R129 C288 AS080547-47N AS080647-56N JDP2S12CR 0.001 R196 C282 R195 LA-630 AS080340-15N JDP2S12CR PA OUT 330P ERJ12-JPW C315 C142 C160 C283 LO IN 120P 100P...
  • Page 40 Highway 17 Delta, B.C., V4K 5B8, Canada : http://www.icomspain.com Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090 E-mail : icom@icomspain.com : http://www.icomcanada.com E-mail : info@icomcanada.com Blacksole House, The Boulevard, Altira Business Park, Herne Bay, CT6 6GZ, UK Phone : +44 (01227) 741741...
  • Page 41 S-14811XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2011 Icom Inc.

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