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BOARD LAYOUTS ......20 VOLTAGE DIAGRAM ......26 [VERSION LIST] Model Version IC-M802 CHN-01 IC-M802FMS...
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(Replacement page) Nov. 2011 4-3 PA AND FILTER UNITS ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST IDLING Operating frequency : 12.2350 MHz Rear Connect an ammeter – Note the current CURRENT Mode : J3E panel (10 A) between an as the initial value.
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Nov. 2011 SECTION 6. PARTS LIST [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1110004080 S.IC UPC2709T-E3 T 184.6/110.3 Q2401 1580000620 S.FET 3SK131-T2 MAS [USA] T 34.3/57.3 IC501 1110005461 S.IC TA4107F(TE12LF) 91.3/61.0 1580000620 S.FET 3SK131-T2 MAS [CAN] IC901 1110005461 S.IC TA4107F(TE12LF) 78.2/61.2...
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Nov. 2011 SECTION 9. BOARD LAYOUTS to FILTER board J7331 to PA unit J6701 J1301 J1901 P501 DSC ANT P7321 from CHASSIS J4503 from FILTER board J7321 • MAIN UNIT (TOP VIEW) BLACK B-5722H RL2101 CP1201 L1906 MP1501 J1901 Q2101 D1551 C1551 J1901...
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Nov. 2011 • MAIN UNIT (BOTTOM VIEW) BOSS BOSS MP301...
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Nov. 2011 • PLL UNIT P5601 P5801 D1LO M1LO (TOP VIEW) to MAIN unit J2301 to MAIN unit J601 C5711 C5710 L5522 C5708 Q5553 IC5702 R5721 C5706 MP5801 L5701 CP5602 C5705 C5704 C5707 C5709 L5885 J5601 R5801 R5811 C5801 R5604 C5528 C5606 CP5251...
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Nov. 2011 MAIN UNIT (1-3) TO MAIN UNIT (1-1) To MAIN UNIT (1-1) L2054 L2703 FAFG 100U 100U DAGC DAGC L2051 100U L2053 R2705 FMOD 100U C2703 F MODG IC2701 IC2702 TS522ID IC2702 R2714 L2052 C2409 C2716 TS522ID R2708 100U L2201 L2210 L2216...
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Jan. 2009 [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C7121 4510005481 ELE 50 ME 1 HC C7325 4030011790 S.CER GRM55RF52A684ZD01L C7122 4030006880 S.CER C1608 JB 1H 472K-T 94.6/17.5 (GRM44-1) 156.1/72.6 C7124 4030012480 S.CER GRM31M2C2H121JV01L C7332 4030006880 S.CER C1608 JB 1H 472K-T 57/9.8 (GRM42-6 CH) 83/29.4...
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Jan. 2009 SECTION 9. BOARD LAYOUTS • MAIN UNIT (TOP VIEW) to FILTER board J7331 to PA unit J6701 J1301 J1901 P501 DSC ANT P7321 from CHASSIS J4503 from FILTER board J7321 BLACK B-5722G RL2101 CP1201 L1906 MP1501 J1901 Q2101 D1551 C1551 J1901...
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Jan. 2009 • MAIN UNIT (BOTTOM VIEW) BOSS BOSS MP301...
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Jan. 2009 • PLL UNIT (TOP VIEW) P5601 P5801 D1LO M1LO to MAIN unit J2301 to MAIN unit J601 C5710 L5522 C5711 C5708 R5722 Q5553 IC5702 C5705 C5706 MP5801 L5701 C5704 C5709 C5707 L5885 J5601 R5604 C5801 C5803 C5528 C5606 CP5251 L5884 R5801...
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Jan. 2009 MAIN UNIT (1-3) TO MAIN UNIT (1-1) To MAIN UNIT (1-1) L2054 L2703 FAFG 100U 100U DAGC DAGC L2051 100U TS522ID IC2702 L2053 R2705 TS522ID FMOD 100U IC2702 F MODG IC2701 C2703 LR-409 R2714 L2052 C2409 C2716 R2708 L2201 L2210 L2216...
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Jan. 2009 FILTER UNIT R L 7 0 3 1 R L 7 0 3 2 L 7 0 3 7 1 . 6 - 1 . 9 9 9 9 M H z L 7 0 3 6 L7 0 3 8 L R - 2 2 6 C7037 L R - 2 3 6...
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SERVICE MANUAL MF/HF MARINE TRANSCEIVER iM802...
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This service manual describes the latest service information NEVER connect the transceiver to an AC outlet or to a DC for the IC-M802 MF/HF MARINE TRANSCEIVER at the time power supply that uses more than 16 V. This will ruin the transceiver.
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• RC-25 Remote controller ‘ ‘ GENERAL : 600 Ω • Microphone impedance : More than 5 mW at 16 Ω headphone with 10 % distortion • Audio output power : 8–16 Ω • Audio output impedance • Usable temperature range : –20˚C to +55˚C;...
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LCD unit (DS8220: HLC770-018800) (DS8220: HLC7700-018800) SENSOR BOARD SENSOR BOARD Power amplifier Power amplifier (IC8270: TA7368F) (IC8270: TA7368F) • IC-M802 DSC 1st mixer D2301: HSB88WS [USA],[CAN] only DSC 2nd mixer IC2701: TA4107F PA UNIT [USA],[CAN] only MAIN UNIT MAIN UNIT...
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SECTION 3 CIRCUIT DESCRIPTION 3-1 RECEIVER CIRCUITS The IF amplifier (Q203) and resonator circuits are designed between the filter pair. The PLL output signal (1LO) enters 3-1-1 RF FILTER CIRCUIT (FILTER AND MAIN the MAIN unit via the J601 and is amplified at the 1st LO UNITS) amplifier (Q601).
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The level-shifted signal is applied to the DSP IC (IC301) for When receiving strong signals, the detected voltage increas- the digital IF filter, demodulator, automatic notch and noise es and the AGC1 voltage decreases. As the AGC1 voltage reduction, etc. is used for the bias voltage of the IF amplifiers (MAIN unit;...
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3-2 TRANSMITTER CIRCUITS When the speech compressor function is ON, the level-shift- ed signal from the CODEC IC (IC501) is applied to the DSP 3-2-1 MICROPHONE AMPLIFIER CIRCUIT IC (IC301) and compressed at the DSP IC to obtain an aver- (RC-25, MAIN AND DSP UNITS) age audio level.
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3-2-5 RF CIRCUIT (MAIN, PA UNITS AND DRIVER • 2–2.9999 MHz signal The signal is applied to the relay (FILTER unit; RL7061) BOARD) which is controlled by the band control IC (MAIN unit; The RF circuit amplifies operating (transmitting) frequency IC3602) as the “L2M”...
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• 14–19.9999 MHz signal • SWR APC CIRCUIT (FILTER AND MAIN UNITS) The signal is applied to the relay (FILTER unit; RL7211) The reflected wave signal appears and increases on the which is controlled by the band control IC (MAIN unit; antenna connector.
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3-3 PLL CIRCUITS The detected signal output from the PLL IC (pin 2) is con- verted into a DC voltage (lock voltage) at the loop filter and 3-3-1 GENERAL then fed back to one of the VCO circuits (Q5521, D5521, The PLL circuits generate a reference frequency (32.000 L5523).
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The AF signals from the microphone are amplified at the AF amplifier (IC8280) via the “MIC” signal. The signal is applied (MAIN AND DSP UNITS) to the IC-M802’s main unit through the J8903 via the “MI” The 2nd mixer circuit converts the 1st signal into a 2nd IF signal.
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R13 regulator circuit (IC1303). The reset IC (IC8202) resets the FRONT CPU (IC8201) when IC-M802 is power ON or OFF. Common 8 V converted from the 13 V line and regulated by the +8 regulator circuit (IC1502).
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3-7 PORT ALLOCATIONS MAIN CPU (MAIN UNIT; IC3303)–continued 3-7-1 MAIN CPU (MAIN UNIT; IC3303) Port Port Description Description number name number name Outputs T8 regulator circuit (MAIN Outputs serial clock signal for the unit; Q1501) control signal. EEPROM (IC3301, pin 6). Outputs R8 regulator circuit (MAIN Input port for the SEND signal from ASEN...
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3-7-4 OUTPUT EXPANDER IC FOR BANDPASS FIL- 3-7-7 D/A CONVERTER IC (IC3606) TERS (IC3604) Port Description Port number name Description number name Outputs transmit power control signal. Outputs 0.5–1.999999 MHz bandpass The signal is applied to the ALC ampli- POCV filter control signal.
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3-7-8 FRONT CPU PORT ALLOCATIONS (RC-25, DISPLAY BOARD; IC8201) Port Description number name Outputs DISTRESS LED control sig- DSEL nal. Input port for the O switch. FUNK Input port for the [TX] switch. Input port for the [RX] switch. FCHK Input port for the [FREQ/CH] switch.
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SECTION 4 ADJUSTMENT PROCEDURES 4-1 PREPARATION When adjusting the contents on page 4-9, a JIG CABLE (see illustration as shown below) is required. Some adjustments must be performed on the “ADJUSTMENT MODE”. Entering the “ADJUSTMENT MODE”, see the next page. I REQUIRED TEST EQUIPMENT EQUIPMENT GRADE AND RANGE...
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I ENTERING THE ADJUSTMENT MODE 1 Turn the power OFF. 2 Push and hold the HM-135’s [DOWN] key, [TX] and [RX] buttons, then turn the power ON. NOTE: Inserting the 15 kΩ resistor between 2 pin and 6 pin of HM-135 works same as pushing and holding HM-135’s [DOWN] key (See the illustration on page 4-1).
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4-2 PLL UNIT ADJUSTMENT MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST LPL LOCK • Operating frequency : 0.5000 MHz Connect a digital multi 1.0 V C5305 VOLTAGE • Mode : J3E meter or oscilloscope • Receiving check point CP5301.
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• IC-M802 BOTTOM VIEW PLL unit • PLL UNIT TOP VIEW C5394 Reference frequency adjustment (OTH) X5251 Reference frequency adjustment (USA, CAN) L5204 L5203 LPL lock voltage adjustment C5521 HPL lock voltage adjustment C5305 CP5401 LPL lock voltage adjustment HPL lock voltage check point...
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4-3 PA AND FILTER UNITS ADJUSTMENT MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST IDLING • Operating frequency : 12.2350 MHz Rear Connect an ammeter 2.0 A R6304 CURRENT • Mode : J3E panel (10 A) between an (For drive •...
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• IC-M802 TOP VIEW R6412 Idling current adjustment (For final transistors) R6304 Idling current adjustment (For drive FETs) • FILTER UNIT BOTTOM VIEW • IC-M802 BOTTOM VIEW FILTER unit CP7331 (REF line) SWR detector check point CP7332 (FOR line) Connect to ground...
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4-4 RECEIVER ADJUSTMENTS ”TOTAL GAIN”, “S-METER” and “DSC PEAK” adjustments must be performed at “ADJUSTMENT MODE”. MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST NOISE NULL • Operating frequency : 0.5 MHz Front Connect an AC milli- Minimum output MAIN L207 POINT...
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• IC-M802 TOP VIEW L208 L209 L307 L302 L301 L210 Receiver gain adjustment L2307 L2306 DSC peak adjustment L207 Noise null point adjustment • RC-25 FRONT PANEL [ENT] 4 - 8...
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4-5 TRANSMITTER ADJUSTMENTS The following adjustments must be performed at “ADJUSTMENT MODE” after “SWR DETECTOR” and “RECEIVER” ADJUST- MENTS in the SECTION 4-3 and 4-4. MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST TRANSMIT • While pushing HM-135’s DOWN key, Rear Connect an RF power Maximum out-...
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• Connect the J3101 pin 15 (FOR line) on the MAIN unit to ground. • Transmitting • After adjustment, disconnect J3101 pin 15 (FOR line) on the MAIN unit from ground. • IC-M802 TOP VIEW L706 Transmit peak and total gain J3101 pin 15...
MP2 (C) PLL UNIT MP4 (C) J5051 (P) W1 (C) MP4512 (C) Unit abbreviations (C): CHASSIS PARTS MP4513 (C) Unit abbreviations (C): CHASSIS PARTS (M): MAIN UNIT HM-135 IC-M802 MP4506 (C) (M): MAIN BOARD (P): PLL UNIT 6 - 4...
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SECTION 7 SEMI-CONDUCTOR INFORMATION • TRANSISTOR AND FET’S • DIODES 2SA1037AK S 2SA1213 Y 2SA1586 GR 2SC2873 Y 2SC4116 BL 1SS301 1SS322 1SS355 1SS375-TL DA221 TL (Symbol: FS) (Symbol: NY) (Symbol: SG) (Symbol: M) (Symbol: LL) (Symbol: B3) (Symbol: A9) (Symbol: A) (Symbol: FH) (Symbol: K)
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8-2-2 CONNECT BOARD • TOP VIEW • TOP VIEW • TOP VIEW 8-2 RC-25 J8602 8-2-1 JACK BOARD H13V • TOP VIEW 8-2-3 SENSOR BOARD to IC-M802 MAIN • TOP VIEW unit J2051 FAFG FMODG FMOD to DISPLAY board 8 - 1...
8-3-2 MAIN UNIT • TOP VIEW to FILTER board J7331 to PA unit J6701 J1301 J1901 P501 DSC ANT P7321 from CHASSIS J4503 from FILTER board J7321 [USA],[CAN] only [USA],[CAN] only [OTH] only [USA],[CAN] only [OTH] only J1101 GND1 192K J1102 GND1 GND1...
8-3-4 PLL UNIT P5601 P5801 D1LO M1LO to MAIN unit J2301 to MAIN unit J601 [USA],[CAN] only [USA],[CAN] only [USA],[CAN] only L5201 [OTH] only [USA],[CAN] only [OTH] [USA],[CAN] [USA],[CAN] only P5201 M2LO to MAIN unit J301 [USA],[CAN] only REMOTE AF/MOD J5071 J5051 J5081...
8-3-5 PA UNIT to CHASSIS W4501 J6703 J6301 J6501 J6412 to DRIVER START to CHASSIS to FAN VARISTOR-2 DRVI board 13.6 W4502 board DRVI ANTC/GND J6302 J6701 P7001 DRVO FLIN from MAIN unit J1 from FILTER board J7001 DRVO J6411 to DRIVER board VARISTOR-1...