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Icom IC-A16 Service Manual

Vhf air band transceivers
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SERVICE
MANUAL
VHF AIR BAND TRANSCEIVERS
|A16
|A16E
S-15512XZ-C1
January 2019

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  • Page 1 SERVICE MANUAL VHF AIR BAND TRANSCEIVERS |A16 |A16E S-15512XZ-C1 January 2019...
  • Page 2 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, Australia, New Zealand, and/or other countries.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY INSTRUCTIONS SECTION 4 ADJUSTMENT PROCEDURE PREPARATION ……………………………………………………………………………………… 4-1 FREQUENCY ADJUSTMENTS …………………………………………………………………… 4-4 TRANSMIT ADJUSTMENTS ……………………………………………………………………… 4-4 RECEIVE ADJUSTMENTS ………………………………………………………………………… 4-5 SECTION 5 PARTS LIST SECTION 6 MECHANICAL PARTS SECTION 7 BOARD LAYOUTS SECTION 8...

  • Page 4: Specifications

    • Antenna connector: BNC type • Operating temperature range: [USA] −10ºC ~ +60ºC (14ºF ~ 140ºF) [EUR] −20ºC ~ +55ºC • Power supply voltage: Specified Icom's battery packs only (7.2 V DC negative ground) • Current drain: Transmitting 1.8 A maximum Receiving 650 mA maximum (maximum audio) 65 mA typical (stand-by) •...
  • Page 5 M Receiver • Receive system: Double conversion superheterodyne • Intermediate frequencies: 46.35 MHz 450 kHz • Sensitivity: [USA] COM Less than 1.0 μV (at 6 dB S/N) NAV Less than 1.4 μV (at 6 dB S/N) Less than 0.4 μV (at 12 dB SINAD) [EUR] L ess than 0 dBμ (at 12 dB SINAD with CCITT) • Squelch sensitivity (threshold): [USA] COM/NAV Less than 1.0 μV Less than 0.56 μV [EUR] Less than 0 dBμ...

  • Page 6: Inside Views

    SECTION 2 INSIDE VIEWS • FRONT UNIT (TOP VIEW) [▲] (S14) [MR] (S15) [▼] (S13) [CLR] (S16) [2] (S2) [1] (S1) [3] (S3) [5] (S5) [4] (S4) [6] (S6) [8] (S8) [7] (S7) [9] (S9) [0] (S11) [ENT] (S10) [FUNC] (S12)
  • Page 7 • FRONT UNIT (BOTTOM VIEW) FRONT PANEL SPEAKER (SP1: CHASSIS UNIT) FRONT UNIT BUFFER (IC507) Bluetooth MODULE (IC506) +3.3 V REGULATOR (IC508) RESET IC (IC509)
  • Page 8 • MAIN UNIT (TOP VIEW) ANTENNA CONNECTOR (J1: CHASSIS UNIT) ] (S504) +3.3 V REGULATOR +5 V REGULATOR (IC16) (IC17) AF AMPLIFIER REGULATOR AF AMPLIFIER REGULATOR (Q2) (Q522) [PTT] (S500) [MIC] (J3) AUTOMATIC POWER CONTROL (IC18) AF POWER AMPLIFIER TXV REGULATOR (IC3) (IC510) [SP] (J2)
  • Page 9 • MAIN UNIT (BOTTOM VIEW) [VOL] (R261) EXTERNAL MICROPHONE REGULATOR (Q21) ANTENNA SWITCH (D40) RF AMPLIFIER (Q34) ANTENNA SWITCH (D38) POWER AMPLIFIER (Q33) 1st MIXER (Q29) IF AMPLIFIER (Q27) DRIVER (Q30) Narrow 1st IF FILTER (FI4) PRE DRIVER IF AMPLIFIER (Q28) (Q37) Wide 1st IF FILTER...

  • Page 10: Disassembly Instructions

    Antenna nut “PH M3×16 SUS” Volume knob Remove with; (8810000620) “ICOM Driver (K)” (8960000113) 5) Disconnect the flat cable from the MAIN UNIT. Front panel Chassis 3) Remove the 2 screws from the bottom of the chassis.
  • Page 11 MAIN UNIT from the chassis. Volume nut MAIN UNIT Top plate Side plate Remove with; “ICOM Driver (AG)” (8960000561) Chassis Chassis 2) Remove the 9 screws from the MAIN UNIT. 3. REMOVING THE FRONT UNIT 1) Remove the 4 screws, and then remove the FRONT UNIT from the front panel.

  • Page 12: Adjustment Procedure

    30 dB Loose couple RF power meter OPC-478UC 0.1~10 W/50 Ω Frequency counter To [MIC] JIG cable To [SP] IC-A16/IC-A16E ■ JIG CABLE AUDIO GENERATOR AC MILLIVOLTMETER (300~3000 Hz/1~500 mV) (10 mV to 10 V) (GND) (GND) + − + −...
  • Page 13 ■ ENTERING THE ADJUSTMENT MODE 1. Right click the CS-A16's icon on the desktop and 7. Write the data to the transceiver. select the "Properties". 8. Turn the power OFF, and then disconnect the OPC-478UC from the transceiver. • The CS-A16 properties window appears. 2.
  • Page 14 ■ KEY ASSIGNMENTS FOR THE ADJUSTMENT MODE • Push [CLR] to select the next adjustment item, push [MR] to select the previous adjustment item. • Push [ENT] to store the adjusted value, and select the next adjustment item. • Push [▲]/[▼] to set or modify the adjustment value. •...

  • Page 15: Frequency Adjustments

    4-2 FREQUENCY ADJUSTMENTS 1) Select an adjustment item by pushing [CLR]/[MR]. 2) Set or modify the adjustment value as specified by push [▲]/[▼], and then push [ENT]. ADJUSTMENT TRANSCEIVER’S ADJUSTMENT OPERATION VALUE ITEM NAME CONDITION REFERENCE • Frequency: 136.975 MHz • Connect the RF power meter to the 136.975 MHz FREQUENCY •...

  • Page 16: Receive Adjustments

    4-4 RECEIVE ADJUSTMENTS 1) Select an adjustment item by pushing [CLR]/[MR]. 2) Set or modify the adjustment value as specified by push [▲]/[▼], and then push [ENT]. ADJUSTMENT TRANSCEIVER’S ADJUSTMENT OPERATION VALUE ITEM NAME CONDITION RECEIVE • Frequency: 108.025 MHz • Connect the standard signal Push [ENT] TRACKING • Receiving generator (SSG) to the antenna (Automatic (AM) connector and set it as:...

  • Page 17: Parts List

    SECTION 5 PARTS LIST [FRONT UNIT] [FRONT UNIT] PART PART DESCRIPTION DESCRIPTION LOCATION LOCATION IC506 1190004712 S.IC HRM1016-010022 [#11] B 33.9/22.6 R665 7030016020 S.RES RMC1/16S-104JTH (100 k) [#11] B 21.8/15.1 1190004712 S.IC HRM1016-010022 [#12] 7030016020 S.RES RMC1/16S-104JTH (100 k) [#12] 1190004712 S.IC HRM1016-010022 [#13]...
  • Page 18 [FRONT UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 2260003600 S.SWI SKRBAAE010 22.7/21.5 1110008890 S.IC NJU7056F3-TE2-#ZZZH 21.0/31.7 2260003600 S.SWI SKRBAAE010 34.1/21.8 1110008450 S.IC ISD8102SYI T&R 81.0/18.9 2260003600 S.SWI SKRBAAE010 11.6/14.4 1110008550 S.IC NJM2904CRB1-TE1-#HMZR 30.2/32.6 2260003600 S.SWI SKRBAAE010 22.7/14.2 1130017460 S.IC AK1542A-L 22.7/36.0 2260003600 S.SWI SKRBAAE010...
  • Page 19 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION D501 1750001810 S.DIO L1SS400T1G 8.6/35.2 7030015970 S.RES RMC1/16S-103JTH (10 k) 36.3/39.3 D503 1750001810 S.DIO L1SS400T1G [#22] B 17.4/25.6 7030016560 S.RES RMC1/16SJPTH 38.3/13.2 1750001810 S.DIO L1SS400T1G [#23] 7030016480 S.RES RMC1/16S-821JTH (820) 26.8/36.9 D504 1750001810 S.DIO...
  • Page 20 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R220 7030016040 S.RES RMC1/16S-224JTH (220 k) 81.7/13.9 R630 7030014590 S.RES MCR006YLPJ 000 (JPW) 5.9/10.0 R221 7030015970 S.RES RMC1/16S-103JTH (10 k) 98.7/12.5 R631 7030008270 S.RES RR0510P-104-D (100 k) 11.7/24.5 R222 7030016600 S.RES RMC1/16S-8R2JTH (8.2) 66.0/35.1 R632 7510001661 S.THR NTCG16 4LH 473JT...
  • Page 21 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 4030022980 S.CER 0402B473K100CT 45.1/25.3 C242 4030022630 S.CER 0402N100C500CT 58.9/27.0 4030023090 S.CER 0402B102K500CT 20.1/39.1 C243 4030023090 S.CER 0402B102K500CT 53.3/34.4 4030023090 S.CER 0402B102K500CT 72.9/8.2 C246 4030023010 S.CER 0402B104K160CT 50.7/30.1 4030023090 S.CER 0402B102K500CT 26.2/35.3 C247 4030023010 S.CER 0402B104K160CT...
  • Page 22 [MAIN UNIT] PARTS DESCRIPTION LOCATION C391 4030023010 S.CER 0402B104K160CT 13.6/33.4 C392 4030022810 S.CER 0402N330J500CT 14.3/31.5 C393 4030022550 S.CER 0402N4R0B500CT 15.5/31.1 C395 4030022570 S.CER 0402N6R0C500CT 14.3/30.6 C396 4030023090 S.CER 0402B102K500CT 39.6/11.2 C397 4030023030 S.CER 0402B103K250CT 40.5/4.5 C398 4030023170 S.CER 0402B332K500CT 26.8/37.6 C399 4030022850 S.CER 0402N391J500CT 25.8/37.6...

  • Page 23: Mechanical Parts

    SECTION 6 MECHANICAL PARTS [CHASSIS UNIT] [MAIN UNIT] PART PARTS DESCRIPTION QTY. DESCRIPTION QTY. 6510027690 BNC-R170 (A) 6450002530 HSJ4456-010320 6450000131 HSJ1102-018540 J500* 6510032890 IMSA-9681S-22Y901 8010023043 3621 CHASSIS-3 8210034170 4052 T-FRONT PANEL ASSEMBLY [#11] 8210034160 4052 T-FRONT PANEL (A) ASSEMBLY [#12] DS503 5030004520 L8-1229TRW 8210034160 4052 T-FRONT PANEL (A) ASSEMBLY...
  • Page 24 MP22 (CHASSIS) Apply the grease to the following area of the front panel (8930091601) MP35 (CHASSIS) Used grease: G501 (80G) SHINETSU (8950002750) MP34 (CHASSIS) (8850003421) (8830001701) J1 (CHASSIS) MP11 (CHASSIS) (8930100750) (6510027690) MP30 (CHASSIS) (8930090130) MP44 (CHASSIS) (8810009511) MP2 (CHASSIS) MP51 (CHASSIS) (8930090110) MP6 (MAIN)

  • Page 25: Board Layouts

    SECTION 7 BOARD LAYOUTS The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together. • FRONT UNIT (B-8942B: TOP VIEW) See the PARTS LIST H/V location on the PARTS LIST for location details.
  • Page 26 The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together. • FRONT UNIT (B-8942B: BOTTOM VIEW) B8942B MISO R651 C536 MOSI C537 3.3V IC507 R654 C543 R660 C557 IC506 C541 R655 R665 Q510...
  • Page 27 The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together. • MAIN UNIT (B-8941C: TOP VIEW) [SQL ▼] [SQL▲] [PTT] B8941C S500 DS504 C150 R305 R233 C372 C401 R242 C313 R258 R329 R249...
  • Page 28 The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together. • MAIN UNIT (B-8941C: BOTTOM VIEW) C166 R177 R132 C229 C179 R182 C257 R208 R206 R197 R223 C266 R218 C271 R224 C280 C281...

  • Page 29: Block Diagram

    SECTION 8 BLOCK DIAGRAM MAIN UNIT IC14b,Q26 +3.3V IC14a Tx:118.000~136.99166MHz IC511 Rx:108.000~117.975MHz 118.000~136.99166MHz Q22,D11 161.650~163.275MHz IF IC BUFF XTAL Q35,D45 IC12_1/2 D22,D23 D24,D25 D29,D30 D31,D35 AM/FM 46.350MHz Wide FM DET LIMIT Q37,D47 Q27,D48 D42,D43,D44 IC15_5 XTAL AMON FMON NOISE D/ A S OUT +5V +3.3V 46.350MHz Narrow...

  • Page 30: Voltage Diagram

    SECTION 9 VOLTAGE DIAGRAM • FRONT UNIT R656 R652 100k 100k C537 IC507 C551 R650 C536 R653 BTAF NJU7056F3 C560 R657 C544 100P BTMIC Q510 HOPC LDTC144EE BT_CLK CP504 CP06S BT_MOSI CP505 CP06S C557 BT_MISO CP506 CP06S BT_CSB CP507 R654 CP06S EP500 R660...
  • Page 31 • MAIN UNIT (1/3) +3.3V 2SC4116 PCON LDTC144EE Q515 PCON TX : 0 V PATMP PATMP RX : 3.3 V 2.2k LDTA114EE BLM15BD102SN1 AMON RX-VCO AMON Q514 RSSI SHIFT RSSI C105 C113 NOISE PLLSW LDTA114EE NOISE EMBI 2SC5086 EMBI C143 EXTREGC EXTREGC C128...
  • Page 32 • MAIN UNIT (2/3) TX : 5.0 V RX : 0 V 3620 C329 C349 R222 220P 1SV307 0.001 R333 C269 C367 R334 100P RD12MVS1 C251 R201 R182 R189 C239 RD01MUS2B 4.7k 1SS390 3621 +3.3V Q521 R233 2SC3356G R248 R796 LDTC144EE IC18 NJU7056F3...
  • Page 33 • MAIN UNIT (3/3) MAIN UNIT (1/3) D508 R641 Q511 L1SS400 JACKDET Q517 IC505 PCON PCON When an external speaker is : LDTC144EE PATMP PATMP VOUT RZM002P02 Connected : 1.6 V Not connected : 3.3 V AMON AMON IC501 XC6209F332MR Transceiver power RSSI RSSI...
  • Page 34 Fax: +34 (93) 589 04 46 Highway 17 Delta, B.C., V4K 5B8, Canada URL: http://www.icomspain.com Phone: +1 (604) 952-4266 Fax: +1 (604) 952-0090 E-mail: icom@icomspain.com URL: http://www.icomcanada.com E-mail: info@icomcanada.com Blacksole House, Altira Park, Herne Bay, Kent CT6 6GZ, UK Phone: +44 (0) 1227 741741...
  • Page 35 S-15512XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2019 Icom Inc.

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