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Summary of Contents for Icom IC-M85
- Page 1 SERVICE MANUAL VHF MARINE TRANSCEIVERS iM85 iM85E S-15420XZ-C1 January 2018...
- Page 2 7. READ the instruction manual of the test equipment thoroughly 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, Australia, New Zealand, and/or other countries.
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Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY INSTRUCTION SECTION 4 ADJUSTMENT PROCEDURE 4-1 PREPARATION ………………………………………………………………………………………… 4-1 4-2 FREQUENCY ADJUSTMENT ………………………………………………………………………… 4-4 4-3 RECEIVE ADJUSTMENT …………………………………………………………………………… 4-5 4-4 TRANSMIT ADJUSTMENTS ………………………………………………………………………… 4-6 SECTION 5 PARTS LIST SECTION 6 MECHANICAL PARTS SECTION 7... -
Page 4: Specifications
SECTION 1 SPECIFICATIONS IC-M85 IC-M85E Frequency coverage Marine Tx 156.025 156.025~157.425 156.000~161.450 (Unit: MHz) ~157.425 156.300 156.050~163.275 156.000~163.425 ~162.025 Land Tx/Rx 136.000~174.000 Number of programmable channels Type of emission Marine 16K0G3E Land Wide 16K0F3E 14K0F3E 16K0F3E Narrow 11K0F3E 8K50F3E Antenna connector SMA (50 Ω) -
Page 5: Inside Views
SECTION 2 INSIDE VIEWS • FRONT UNIT (BOTTOM VIEW) I/O Expander (IC2) LCD Driver (IC9) AF Power Amplifier for External Speaker (IC5) AF Switch (IC8) MIC/VOX Amplifier (IC4) Audio Mute Switch (IC8) AF Power Amplifier for Internal Speaker (IC5) - Page 6 • FRONT UNIT (TOP VIEW) LCD (DS6) Internal Microphone (MC1)
- Page 7 • MAIN UNIT (TOP VIEW) J404 APC Controller (IC1) Level Switch (IC3) D/A Converter (IC6) IF IC (IC2) Audio Switch (IC11) 1st IF Filter (FI1) EEPROM (IC409)
- Page 8 • MAIN UNIT (BOTTOM VIEW) [DIAL] (S401) TX Power Amplifier (Q1) Under the thermal sheet † RF Amplifier Pre-Drive Amplifier (Q5) (Q2) TX/RX VCOs D/A Converter 1st Mixer (Q6) (IC22) PLL IC (IC4) Switch IC (IC13) Reference Oscillator (X2) CPU (IC401) Voice Scrambler IC Motion Sensor (IC600)
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Page 9: Disassembly Instruction
Remove 2 knobs and antenna nut from the front Use a suction lifter to lift the bottom of the CHASSIS up. panel. Dial knob Antenna nut Knob Remove with; “ICOM Driver (K)” Suction lifter (8960000112) • Part name: EA950R-2 • Manufacture: ESCO CO.LTD Suction lifter Remove 2 screws from the bottom of chassis. - Page 10 FLAT CABLE Lift up Chassis Front panel flat cable Remove with; Dial nut “ICOM Driver (AG)” (8960000560) Remove 2 screws, then separate the FRONT UNIT Separate the MAIN UNIT from the chassis. from the front panel. Screws ×10 Screws ×2...
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Page 11: Adjustment Procedure
SECTION 4 ADJUSTMENT PROCEDURE 4-1 PREPARATION REqUIRED EqUIPMENT ■ EqUIPMENT SPECIFICATIONS EqUIPMENT SPECIFICATIONS CS-M85 PROGRAMMING Frequency range: DC~20 MHz Programming software Oscilloscope SOFTWARE (Revision 1.0 or later) Measuring range: 0.01~20 V Measuring range: 0.1~10 W Frequency range: 0.1~300 MHz RF power meter Standard signal Frequency range: 100~300 MHz Output level:... - Page 12 JIG cable ■ OPC-2338 Audio Generator AC Millivoltmeter (300~3000 Hz/1~500 mV) (10 mV to 10 V) + − + − 4.7 µF/16 V <Settings> Frequency: 1 kHz Level: 150 mV rms PTT Switch Add a 10 kΩ resistor to CP9 for VOX unit detection. aDJUSTMeNT UTIlITy ■...
- Page 13 ADJUSTMENT CHANNELS ■ CONVENIENT: The same cloning file is available. Right-click the clip icon to the right, and select "Save Embedded File to Disk."...
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Page 14: Frequency Adjustment
4-2 FREqUENCY ADJUSTMENT Select an adjustment item by pushing [↑]/[↓]/[←]/[→] on the PC's keyboard. Set or modify the adjustment value as specified using [Space]/[BackSpace] on the PC's keyboard. TRANSCEIVER'S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM PLL LOCK • Channel: 1 Click the "I/O check button"... -
Page 15: Receive Adjustment
4-3 RECEIVE ADJUSTMENT Select an adjustment item by pushing [↑]/[↓]/[←]/[→] on the PC's keyboard. Set or modify the adjustment value as specified using [Space]/[BackSpace] on the PC's keyboard. TRANSCEIVER'S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM RX SENSITIVITY NOTE: When the "RX SENSITIVITY" is re-adjusted, the "RSSI" must be re-adjusted too. •... -
Page 16: Transmit Adjustments
4-4 TRANSMIT ADJUSTMENTS Select an adjustment item by pushing [↑]/[↓]/[←]/[→] on the PC's keyboard. Set or modify the adjustment value as specified using [Space]/[BackSpace] on the PC's keyboard. TRANSCEIVER'S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM TX OUTPUT • Channel: 10 •... -
Page 17: Parts List
SECTION 5 PARTS LIST [FRONT UNIT] [FRONT UNIT] PART PART DESCRIPTION DESCRIPTION LOCATION LOCATION 1130017400 S.IC MC74HC4094ADTR2G 9.3/39.5 4030022120 S.CER GRM0332C1H470JA01D 38.9/44.5 1110008940 S.IC NJU7057RB1-TE2-#ZMZH 43.2/6.0 4030022120 S.CER GRM0332C1H470JA01D 39.2/43.7 1110007610 S.IC TPA0211DGNR 39.1/20.2 4030022860 S.CER 0402N470J500CT 23.3/17.8 1110007610 S.IC TPA0211DGNR 43.6/20.7 4030022140 S.CER GRM033B31H102KA12D... - Page 18 [MAIN UNIT] [MAIN UNIT] PART PART DESCRIPTION DESCRIPTION LOCATION LOCATION 1110008890 S.IC NJU7056F3-TE2-#ZZZH 16.9/14.1 6200014990 S.COI E3026300S5 (30N) 14.8/11.6 1110008392 S.IC SC-1451A (AK2365AM-L) 54.7/14.5 6200015010 S.COI E3026405S5 (40.5N) 11.6/13.5 1130009581 S.IC TC7W66FU(TE12LF) 49.9/22.2 6200015010 S.COI E3026405S5 (40.5N) 11.4/19.5 1130017460 S.IC AK1542A-L 51.5/21.2 6200002851 S.COI...
- Page 19 [MAIN UNIT] [MAIN UNIT] PART PART DESCRIPTION DESCRIPTION LOCATION LOCATION 7030015930 S.RES RMC1/16S-471JTH (470) 54.5/17.9 R177 7030016020 S.RES RMC1/16S-104JTH (100 k) 80.6/30.3 7030016060 S.RES RMC1/16S-105JTH (1 M) 53.3/17.6 R178 7030015990 S.RES RMC1/16S-683JTH (68 k) 50.3/42.2 7030016040 S.RES RMC1/16S-224JTH (220 k) 53.3/19.4 R179 7030016350 S.RES...
- Page 20 [MAIN UNIT] [MAIN UNIT] PART PART DESCRIPTION DESCRIPTION LOCATION LOCATION R622 7030015970 S.RES RMC1/16S-103JTH (10 k) 76.0/10.8 C115 4030023090 S.CER 0402B102K500CT 45.5/10.6 R623 7030016020 S.RES RMC1/16S-104JTH (100 k) 76.9/10.8 C116 4030022860 S.CER 0402N470J500CT 47.4/10.6 R624 7030016020 S.RES RMC1/16S-104JTH (100 k) 77.8/10.8 C117 4030023030 S.CER 0402B103K250CT...
- Page 21 [MAIN UNIT] [MAIN UNIT] PART PART DESCRIPTION DESCRIPTION LOCATION LOCATION C256 4030020000 S.CER C1005 JB 1A 105K-T 45.3/39.9 C459 4030022980 S.CER 0402B473K100CT 80.6/36.0 C257 4030023230 S.CER 0402B562K500CT 41.3/30.8 C460 4030023090 S.CER 0402B102K500CT 62.3/39.9 C258 4030023210 S.CER 0402B472K500CT 39.2/30.3 C461 4030023010 S.CER 0402B104K160CT 64.0/39.9 C260 4550007550 S.TAN...
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Page 22: Mechanical Parts
SECTION 6 MECHANICAL PARTS [CHASSIS PARTS] [FRONT UNIT] PART PART DESCRIPTION qTY. DESCRIPTION qTY. 6910021492 ANT CONNECTOR 106-2 6510030920 IMSA-9681S-24Y901 6510031380 31FXVL-RSM1-GAN-TF-1 (HF) 6510032530 04-6299-004-020-846+ 2510002080 036D01206 6510031400 BM02B-ACHSS-GAN-ETF (LF) (SN) 6510031390 15FXVL-RSM1-GAN-TF-1 (HF) 8920001910 CAB-1219 8910000570 FFC-1061 (P0.5N24L90) 5030004400 BTD-0701V-HBWD-N-A-A0 8940000020 3766 CONNECTOR P.C.B MC1* 7700003060 F6027AP-SBC-462... - Page 23 MP47 (CHASSIS) MP41 (CHASSIS) (8930096990) (8930088050) Apply the grease to the following area of the front panel MP39 (CHASSIS) Used grease: G501 (80G) SHINETSU (8950002750) MP36 (CHASSIS) (8830004310) (8850003421) MP38 (CHASSIS) (8830001470) J1 (CHASSIS) MP53 (CHASSIS) (6910021492) (8930059800) Apply all around MP51 (CHASSIS) MP31 (CHASSIS) (8930097400)
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Page 24: Board Layout
SECTION 7 BOARD LAYOUT The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together. • FRONT UNIT (B-8730D: Top view) • MAIN UNIT (B-8731E: Top view) C557 R663 R662 C555 AFIV CPU5V PWON... - Page 25 The actual configuration of the PC board can be seen by viewing the top and bottom BOARD LAYOUT pages together. • MAIN UNIT (B-8731E: Bottom view) • FRONT UNIT (B-8730D: Bottom view) MP11 C238 MP401 C234 C568 C233 R136 C105 C569 R110 C232...
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Page 26: Block Diagram
SECTION 8 BLOCK DIAGRAM IC3A FRONT MAIN ANTENNA LVIN RIPPLE Q14,D19,D20 D16,D17 D8,D9 TX/RX BUFF BUFF BUFF DRIVE DRIVER PLL IC LOOP PCON TDETV CTRL Q13,D23,D24 D3,D4,D7 BUFF IC3B VCON TMUTE LIGHT LIGHT BUFF TCXO MUTE SW IC15 Q1,Q2 PLL DATA / IF IC control BUS IC10B IC13D IC13A... -
Page 27: Voltage Diagram
SECTION 9 VOLTAGE DIAGRAM • FRONT UNIT RSQ035P03TR To MAIN UNIT (1/2) 7.2 V VOXV VOXV 3.9 V MCIN MICIN MICE MICE OPTV OPTV CPU5V CPU5V LCDINH LCDINH LCDDATA LCDDATA LCDCK LCDCK 5.0 V LCDMD LCDMD LCDE LCDCE 330k SDATAO SDATAO SCKO SCKO... - Page 28 • MAIN UNIT (1/2) CPU5V R492 To FRONT UNIT CPU5V IC409 CP10S FLTXD CP10S VOXV FLRXD MICIN GT24C128B RESET CP10S CP10S MICE NJU7704F3 OPTV CPU5V CP10S CP10S VOUT LCDINH LCDDATA LCDCK CP10S CP10S LCDMD IC410 R120 LCDCE SSM3J35FS CPU5V SDATAO IC401 SCKO MB9AFAA2NPMC...
- Page 29 • MAIN UNIT (2/2) MPZ2012S331A 4.3 V KTC4075 TX: 2.2 V 3.9 V 3877 RX: 0 V 5.0 V 3.9K 1.8K 10.0N 6.8N 40.5N 0.001 BAR88 0.001 40.5N 40.5N 30.0N RD08MUS2 C270 C271 C275 KTC3770U 100P RD01MUS2B C303 TX: 1.9 V 0.5P 3.3U 0.75P...
- Page 30 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 31 S-15420XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2018 Icom Inc.
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