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SERVICE MANUAL VHF TRANSCEIVER i2200H Downloaded by RadioAmateur.EU...
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8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. Icom, Icom Inc. and are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
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• UT-115 SPECIFICATIONS GENERAL • Usable temperature range : –10˚C to +60˚C; +14˚F to +140˚F • Power supply requirement : 5.0 V DC (4.5 V–8.5 V for AMBE IC VCC line) • AF input level : 1 V typical • Modulation output level : 350 mV typical •...
2-2 HM-133V Reset IC Reset IC (IC3: BD5245G) (IC3: BD5245G) (IC1: µPD789071) (IC1: µPD789071) LED driver LED driver Q4, Q5: 2SA1586 Q4, Q5: 2SA1586 DS11*: LT1EP53A DS11*: LT1EP53A LED driver LED driver Q6, Q7: 2SA1586 Q6, Q7: 2SA1586 DS10*: LT1EP53A DS10*: LT1EP53A EE-PROM EE-PROM...
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SECTION 3 OPTIONAL UNIT INSTALLATION ➀ ➄ Remove [DIAL] and unscrew the 2 allen-socket bolts from Intall the unit as illustrated below. Insert tightly to avoid ″). the front panel using with an allen wrench (2.5 mm; ⁄ bad contact. Flat cable Allen-socket bolts...
SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS The tunable bandpass filters (D13–D16) employ varactor diodes to tune the center frequency of the RF passband for 4-1-1 ANTENNA SWITCHING CIRCUIT wide bandwidth receiving and good image response rejec- (MAIN UNIT) tion. These diodes are controlled by the CPU (LOGIC unit; The antenna switching circuit functions as a low-pass filter IC1) via the D/A convertor (IC5).
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J4 (MAIN unit) and J6 4-1-6 AM/FM SELECTOR CIRCUIT (MAIN UNIT) (MAIN unit). IC-2200H can receive AM and FM signal. The 2nd IF signal is detected AM or FM detector circuits respectively. 4-1-8 SQUELCH CIRCUITS...
4-2 TRANSMITTER CIRCUITS • IN CASE OF ANALOG AF SIGNALS The AF signals are applied to the DI/AN switch (IC522, pin 4-2-1 MICROPHONE AMPLIFIER CIRCUIT 9), and are then reapplied to the switch (pin 4) from pin (LOGIC unit) 8.The signals output from the switch (pin 3) as analog AF The microphone amplifier circuit amplifies audio signals with signals , and are then applied to the modulation circuit after +6 dB/octave pre-emphasis characteristics from the micro-...
4-2-7 APC CIRCUIT (MAIN UNIT) An oscillated signal from the VCO passes thorough the LO and buffer amplifiers (Q9, Q12) is applied to the PLL IC (IC1, The APC circuit protects the power amplifier from a mis- pin 6) and is prescaled in the PLL IC based on the divided matched output load and stabilizes the output power.
4-5 PORT ALLOCATIONS 4-3-3 REFERENCE OSCILLATOR CONTROL 4-5-1 D/A CONVERTER IC (MAIN UNIT; IC5) CIRCUIT (LOGIC AND MAIN UNITS) The reference oscillator control circuit changes the refer- Port Description ence frequency when using digital voice function. number name Outputs RF tracking voltage while When digital voice signals output from the optional digital receiving.
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4-5-3 CPU (LOGIC UNIT; IC1) Port Description number name Port Description number name 53–55 IS0–IS2 Output initial matrix strobe signals. Input port for the CTCSS/DTCS sig- 56, 57 KS1, KS2 Output key scan signals CTCIN nals. Input ports for the keyboard matrix Input port for squelch volume detect- 58–61 KR3–KR0...
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4-6 UT-115 CIRCUIT DESCRIPTION 4-7 UT-115 POWER SUPPLY CIRCUITS 4-6-1 RECEIVER CIRCUIT VOLTAGE LINES The detected digital signals “FMDET” from the connected Line Description transceiver via the J301 (pin 22) are amplified at the buffer amplifier (IC251, pin 2). The amplified signals are applied to The 5 V voltage from the connected transceiver the GMSK modem circuit (IC252, pin 11), and are then via the J301 (pin 29).
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4-8-2 CPU (IC2) Port Description number name Input port for the reset signal from the reset IC (IC203, pin 1). Low :The CPU is reset. OSC2 Outputs 9.8304 MHz reference signal. Input port for 9.8304 MHz reference OSC1 signal. Outputs 3.2V regulator circuit (IC2, APWR pin 3) control signal.
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SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREPARATION Enter the adjustment mode when adjusting the IC-2200H Then the JIG cable as shown the page 5-2 is required . I REQUIRED TEST EQUIPMENT EQUIPMENT GREDE AND RANGE EQUIPMENT GREDE AND RENGE Output voltage : 13.8 V DC...
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‘ ‘ CONNECTIONS FM DEVIATION ATTENUATOR METER 50 dB or 60 dB RF POWER METER POWER SUPPLY 50 , 1 80 W 13.8 V, 20 A or more STANDARD SIGNAL GENERATOR 0.1 300 MHz 127 to 17 dBm (0.1 V to 32 mV) CAUTION! DO NOT transmit while an SSG is...
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5-2 SOFTWARE ADJUSTMENTS (TRANSMITTING AND RECEIVING) ADJUSTMENT ADJUSTMENT CONDITION OPERATION REFERENCE • Operating frequency : 146.0 MHz • Turn the [DIAL] to set to 146.0000 MHz. FREQUENCY • Loosely couple a frequency counter to the antenna • Push the [S.MW] key. [Fr] connector on the rear panel.
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SOFTWARE ADJUSTMENTS (TRANSMITTING AND RECEIVING)–Continued ADJUSTMENT ADJUSTMENT CONDITION OPERATION DIGITAL • Operating frequency : 146.0 MHz • Turn the [DIAL] to set to ±0.85 kHz. REFERENCE • IF bandwidth : Wide • Push the [S.MW] key after finish adjustment. DEVIATION •...
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5-3 UT-115 ADJUSTMENT PROCEDURES • PREPARATION Enter the adjustment mode when adjusting the UT-115. I REQUIRED TEST EQUIPMENT EQUIPMENT GREDE AND RANGE EQUIPMENT GREDE AND RENGE Output voltage : 5.0 V DC Frequency range : 0.1–100 MHz DC power supply 1 Current capacity : 1 A or more Frequency accuracy...
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5-4 TRIMMER ADJUSTMENTS ADJUSTMENT MEASUREMENT MEASUREMENT POINT ADJUSTMENT VALUE UNIT LOCATION UNIT ADJUST CODEC MAIN Connect the frequency counter to 16.38400 MHz ±10 Hz MAIN C102 FREQUENCY the check point CP101. MODEM MAIN Connect the frequency counter to 2.457600 MHz ±3 Hz MAIN C207 FREQUENCY...
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9-3 HM-133V NOTE: HM-133V’s main unit has 2 versions (MAIN or MAIN-A). • TOP VIEW (MAIN UNIT) • TOP VIEW (MAIN-A UNIT) MAIN unit employs old type CPU, MAIN-A unit employs new type one. Make sure to be used whether MAIN unit or MAIN-A unit before servicing. VFO/LOCK MR/CALL BANK/OPTION...
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• BOTTOM VIEW (MAIN-A UNIT) • BOTTOM VIEW (MAIN UNIT) to the IC-2200H to the IC-2200H LOGIC unit J1 LOGIC unit J1 9 - 6...
SECTION 12 HM-118/N (OPTIONAL UNIT) 12-1 INSIDE VIEW (HM-118/N) 12-2 BOARD LAYOUTS • TOP VIEW (MAIN UNIT) UP swtich UP swtich DOWN switch DOWN switch (S3: SKHHLM) (S3: SKHHLM) (S4: SKHHLM) (S4: SKHHLM) PTT switch PTT switch UP DOWN LOCK switch UP DOWN LOCK switch (S1: JPM1990-2013R) (S1: JPM1990-2013R)
14-2 SEMICONDUCTOR INFORMATION 14-3 BLOCK DIAGRAM • TRANSISTORS AND FET’S 2SA1586 GR DTC144EUA T106 XP4312 (Symbol: SG) (Symbol: 26_) (Symbol: 7T) FOR FM_TRANCEVER OPTION CONNECTOR FLASH WRITER F_RXD Explanatory notes Q305 XP4312 VOLTAGE LINE Q306 XP4312 TX LINE LEVEL FOR FM_TRANCEVER CPU TXD_2 RX LINE CONVERT...
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