Hf all band transceiver general coverage receiver (51 pages)
Summary of Contents for Icom IC-7600
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HF/50 MHz TRANSCEIVER S-14523XZ-C1 Mar. 2009...
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8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. Icom, Icom Inc. and 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.
SECTION 2. INSIDE VIEWS • MAIN UNIT USB INTERFACE DC AMP (IC1404) 2ND RX LO CIRCUITS ATTENUATOR CIRCUITS 2ND TX IF FILTER SW (IC3501) 2ND TX IF FILTER SW (IC3502) LIMITER (IC3002) VCA (For RX AF CIRCUIT) DDS CIRCUITS (IC2331) A/D, D/A CONVERTER (IC4301) 3RD LO CIRCUIT...
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• CTRL UNIT TX LINE CONTROLLER (2/2) TX LINE CONTROLLER (1/2) (Q132) (Q131) CURRENT DETECTOR (D81) DC AMP (FOR CURRENT DTECT) (IC81) TUNER LINE SW (RL104) TUNER LINE SW (RL105) DC AMP (FOR PHASE DETETECT) (IC21) DC AMP DC AMP (FOR RESISTANCE AND (FOR SWR DETECT) REACTANCE DETECT)
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• PA UNIT PRE-DRIVER (Q1) +5V LINE REGULATOR (IC2) +3R3V LINE REGULATOR (IC1) DRIVER DRIVER (Q3) (Q2) COOLING FAN CONTROLLER (IC101) COOLING FAN DRIVER (Q101) ATC 5 A FUSE (F1) POWER AMP POWER AMP (Q101) (Q2) 2 - 3...
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• PLL UNIT LO AMP AND FILTER CIRCUITS PLL CIRCUIT (IC681) AND (FOR VCO-A) LO AMP AND FILTER CIRCUITS (FOR VCO-B) VCO-B VCO-A SUB LOOP VCO (Q451) PLL CIRCUIT (FOR VCO-A) (IC381) DDS CIRCUIT (FOR VCO-B) (IC403) DDS CIRCUIT (FOR VCO-A) (IC101) EXPANDER (IC3)
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• RF UNIT BPF UNIT PRE AMP BOARD PREAMP (Q4201, 4202) 1ST RX IF CIRCUIT 1ST RX IF CIRCUIT (FOR SUB READOUT) (FOR MAIN READOUT) MCF-M BOARD MCF-N BOARD MCF-W BOARD XTAL FILTER (Bw=15 kHz) (FI7001) XTAL FILTER (Bw=6 kHz) (FI6001) XTAL FILTER (Bw=3 kHz) (FI5001)
SECTION 3. CIRCUIT DESCRIPTION 3-1 RECEIVER CIRCUITS BPF CIRCUITS (RF UNIT AND BPF BOARD) ANTENNA SWITCHING CIRCUIT AND ANTENNA The RX signals from the attenuator circuits are passed MATCHING CIRCUITS (CTRL AND TUNER UNITS) through an LPF or one of BPFs correspond to the operating RX signals from the antenna connector;...
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1ST RX IF CIRCUITS (RF UNIT) readout; D1001–1003) which adjusts the balance of both 1st RX IF signals, and amplified by 1st RX IF AMP (Main The RX signals from the PREAMP BOARD are applied readout; Q1208/Sub readout; Q1008). to the splitter (L904) to divide the received signals for dualwatch operation.
RX AF CIRCUITS (MAIN UNIT) The power-amplifi ed AF signals are passed through the AF The AF signals from the buffer amplifier are applied to mute switch (RL2302), then applied to the internal speaker the AF AMP (IC2301) via the squelch gate (Q2361). The or external speaker jack (J2302) on the rear panel or amplified AF signals are applied to the Voltage Controlled headphone jack (JACK BORD J2) on the front panel.
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3RD TX IF AND 2ND TX IF CIRCUITS (MAIN UNIT) The fi ltered 2nd TX IF signal is amplifi ed by the 2nd TX IF The 3rd TX IF signal from the modulation circuits is applied AMP (Q3504), and applied to the 2nd TX mixer (D3703) via to the 3rd TX mixer (IC3402) via the LPF (IC3401) to be the attenuator to be converted into the 1st TX IF signal, by converted into the 2nd TX IF signal, by being mixed with...
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TX AMPLIFIER CIRCUITS (RF AND PA UNITS) PHASE DETECTION CIRCUIT The TX signal which is picked up at the current detect The TX signal from the BPF circuits is applied to the YGR transformer (L21) and the TX signal which is divided by C21, AMP (RF UNIT;...
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1ST RX (Main readout)/TX LO CIRCUITS 3-3 FREQUENCY SYNTHESIZER (PLL UNIT) The 32 MHz reference signal from the reference frequency REFERENCE FREQUENCY OSCILLATOR CIRCUIT oscillator circuit is amplified by Q152, and applied to the The crystal oscillator (X51) oscillates the 32 MHz reference DDS (IC101) as the reference clock signal.
1ST RX (Sub readout) LO CIRCUITS (SUB LOOP) 1ST RX (Sub readout) LO CIRCUITS (MAIN LOOP) The 32 MHz reference signal from the reference frequency The applied PLL reference frequency signal is used for the oscillator circuit is amplified to the C-MOS level by Q403, phase comparison of oscillating signal from the VCO-B and applied to the DDS (IC403) as the reference clock (Q501, 521, 551, 571).
3-4 VOLTAGE BLOCK DIAGRAM Voltage from the power supply is routed to the whole of the transceiver via regulators and switches. H13.8V H3.3V “PWRK ” DC-IN H3.3V FRONT FRONT 13.8V POWER SW “PWRS” +13.8V LOGIC CIRCUITS +1.2V DC-DC +3.3V +3.3V +1.2V +3.3V +1.8V...
3-5 CPU PORT ALLOCATIONS • MAIN CPU (LOGIC UNIT: IC604) Line Line Description Description Name Name Input noise pulse. H8_A0– 5–20 DSP address bus. H8_A13 Bus control "Wait" signal. WAIT# PLL unlock detect signal input for VCO-A. UNLKA H=Unlock detected. TRAS SEND signal.
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• FRONT CPU (LOGIC UNIT: IC101) Line Line Description Description Name Name TFT contrast control. (D/A) ] input. (Pull-up) CNTV (1–2.3 V) MPWK [MP-W] input. (Pull-up) POWER LED control. [V/M] input. (Pull-up) PWRD (0 V=Light OFF, 3.3 V=Light ON.) [AUTO TUNE] input. (Pull-up) LDAT Expander (BU2099) data.
SECTION 4. ADJUSTMENT PROCEDURE 4-1 PREPARATION ¤ REQUIRED EQUIPMENTS EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Modifi ed 3.5 mm (1/8’’) monoral plug Audio generator Frequency range : 300–3000 Hz Short plug (See the illust on the page 4-17) (AG) Output level : 1–500 mV...
4-2 REFERENCE FREQUENCY SIGNAL LEVEL ADJUSTMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT REFERENCE 1 • Receiving 1) Connect a RF Voltmeter to J81. FREQUENCY 2) Adjust the reference frequency L61, L62 Maximum SIGNAL signal level. (repeatedly) level LEVEL <Viewing from the BOTTOM side> UNIT MAIN UNIT RF UNIT...
4-3 PLL UNIT ADJUSTMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT VCO-A 1 • Frequency : 7.999999 MHz 1) Connect a Digital multimeter to LOCK • Mode : USB CP301. C278 VOLTAGE • Receiving 2) Adjust the lock voltage. 2 • Frequency : 19.999999 MHz •...
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C208 C228 C258 C278 4-3 PLL UNIT ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT LPL B 1 • Frequency : 0.030000 MHz 1) Connect a Digital multimeter to LOCK (Sub band) CP401. 2.0 V VOLTAGE • Mode : USB 2) Adjust the lock voltage.
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4-3 PLL UNIT ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT R2 LO LEVEL 1 • Frequency : 14.100 MHz 1) Connect a Spectrum Analyzer to (Main band) J831. Maximum L834 • Mode : USB 2) Adjust the LO signal level. level •...
4-4 PA UNIT ADJUSTMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT IDLING "IDLING" must be adjusted by cold-started. (Preparation) 1) Set 5 variable resisters to the preset point. R14, Max. 2) Disconnect the power cable from – R16, counter the transceiver, and connect an DC R65, clockwise Ammeter (30 A) between the power...
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<Viewing from the TOP side> CTRL DC power supply (13.8 V/30 A) FILTER UNIT UNIT UNIT − ⊕ AMMETER (0.1–30 A) [ANT1] [DC13.8V] DUMMY LOAD (50 Ω/120 W) Fuses 30 A Black − ⊕ − ⊕ − Supplied DC cable Black IDLING (FINAL AMP) IDLING (FINAL AMP)
4-6 MAIN UNIT ADJUSTMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT PRESET 1 • Receiving 1) Turn the transceiver OFF. 2) Reset the CPU. (While pushing and – – holding both [F-INP] and [MW], turn the power ON.) • Set the variable resister to 3 o'clock 3 o'clock R1211 position (viewing from REAR).
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<Viewing from the BOTTOM side> [MIC] AC millvolt Audio generator meter MAIN UNIT PLL UNIT RF POWER METER (120 W/50 Ω) RF UNIT [MIC] [ANT1] R1211 R1211 R1227 R1227 CP1201 CP1201 R1262 R1262 TX HIGH POWER TX HIGH POWER (50 MHz BAND) (50 MHz BAND) R1267 R1267...
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4-6 MAIN UNIT ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT AM CARRIER 1 • Frequency : 14.100 MHz 1) Connect an RF Power meter to POWER • Mode : AM [ANT1]. R1255 30 W • MIC input : OFF 2) Adjust the TX output power.
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<Viewing from the BOTTOM side> AC millvolt Audio generator meter [MIC] PLL UNIT RF POWER METER MAIN UNIT (120 W/50 Ω) [MIC] RF UNIT AC MILLIVOLT METER (10 mV to 10 V) [EXT-SP] [DC13.8V] [ANT1] – EXT. SPEAKER (2 W/8 Ω) –...
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4-7 MAIN UNIT ADJUSTMENT (SCOPE CIRCUIT) ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT SCOPE 1 • Frequency : 14.200 MHz • Connect an SSG to [ANT1] and set L6032→L6037→ DISPLAY L6041→L6023→ (Main band) Maximum Frequency : 14.200 MHz L6028→C6076 • Mode : CW waveform Modulation...
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<Viewing from the BOTTOM side> PLL UNIT MAIN UNIT STANDARD SIGNAL GENERATOR (0.1–60 MHz) RF UNIT [ANT1] L6032 L6032 SCOPE DISPLAY SCOPE DISPLAY L6041 L6041 SCOPE DISPLAY SCOPE DISPLAY R6071 R6071 SCOPE GAIN SCOPE GAIN L6037 L6037 SCOPE DISPLAY SCOPE DISPLAY L6028 L6028 SCOPE DISPLAY...
4-8 RF UNIT ADJUSTMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE POINT PRESET • Frequency : 14.100000 MHz • Set 2 trimmer capacitors to the preset position as illustrated below. • Mode : CW • [DUALWATCH] : "OFF" • [ATT] : "OFF" C1238, C1036 (as shown) •...
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<Viewing from the BOTTOM side> J201 J201 TX PEAK TX PEAK Audio AC millvolt (CHECK POINT) (CHECK POINT) meter generator [MIC] [MIC] PLL UNIT STANDARD SIGNAL GENERATOR MAIN UNIT (0.1–60 MHz) AC MILLIVOLT METER RF UNIT (10 mV to 10 V) [EXT-SP] –...
4-9 SOFTWARE ADJUSTMENT ¤ ENTERING ADJUSTMENT MODE 1) Turn the transceiver OFF. 2) Connect a short plug (See the illust below) to [REMOTE]. 3) While pushing and holding both [SSB] and [CW], turn the transceiver power ON. ("ADJUST MODE" appears on the display as below.) <FRONT VIEW>...
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4-9-1 SOFTWARE ADJUSTMENT (TRANSMIT) Push [F-4] (TX) to enter the TRANSMIT ADJUSTMENT MODE. ¤ CONNECTIONS FOR THE TRANSMIT ADJUSTMENT <FRONT VIEW> TIMER SPLIT LOCK TWIN SPLIT HF/50MHz TRANSCEIVER POWER DUAL WATCH TRANSMIT TUNER MONITOR AC millvolt Audio GENE F-INP CHANGE PHONES generator meter...
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4-9-1 SOFTWARE ADJUSTMENT (TRANSMIT) (continued) ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM PREPARATION 1) Connect an Audio Generator and AC Millivoltmeter to the [MIC] connector on the FRONT panel, and set it as; Frequency : 1.5 kHz Level : 10 mV – 2) Connect an RF Power meter (terminated) to [ANT1].
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4-9-2 SOFTWARE ADJUSTMENTS (RECEIVE) Push [F-5] (RX) to enter the RECEIVE ADJUSTMENT MODE. ¤ CONNECTIONS FOR THE RECEIVE ADJUSTMENT <FRONT VIEW> TIMER SPLIT LOCK TWIN-PBT HF/50MHz TRANSCEIVER SPLIT POWER DUAL WATCH TRANSMIT TUNER MONITOR GENE F-INP CHANGE PHONES MP-W MP-R PBT - CLR NOTCH APF/TPF...
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4-9-2 SOFTWARE ADJUSTMENT (RECEIVE) (continued) ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM PREPARATION 1) Connect an SSG to [ANT1] and set it as; Frequency : 14.1515 MHz – Modulation : None – Level : OFF (initially) 2) Connect an AC Millivoltmeter to [EXT-SP]. TOTAL GAIN 1) Set the SSG as;...
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4-9-3 SOFTWARE ADJUSTMENT (FREQUENCY) Push [F-2] (REF) to enter the RECEIVE ADJUSTMENT MODE. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM REFERENCE 1) Connect a Frequency Counter to J81 (PLL UNIT). 64.000000 FREQUENCY – 2) Adjust the reference frequency using MAIN DIAL. 3) Push [F-6] (SET). (Returns to "ADJUST MODE.") ¤...
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4-9-4 SOFTWARE ADJUSTMENT (TUNER) ¤ ENTERING TUNER REFERENCE ADJUSTMENT MODE 1) Turn the transceiver OFF. 2) Connect a 50 Ω Dummy Load to [ANT1]. 3) Connect a short plug (see the illust below) to [REMOTE]. 4) While pushing and holding both [FILTER] and [SET/EXIT], turn the transceiver power ON. ADJUSTMENT ADJUSTMENT OPERATION...
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The combination of top side and bottom side of this page shows the actual configuration of P.C. board. • FILTER UNIT (TOP VIEW) B7021D Q401 Q351 Q301 Q251 Q201 Q151 Q101 C419 R402 C363 R352 C308 R302 Q402 Q352 Q302 Q252 Q202 Q152...
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The combination of top side and bottom side of this page shows the actual configuration of P.C. board. • FILTER UNIT (BOTTOM VIEW) 7 - 10...
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The combination of top side and bottom side of this page shows the actual configuration of P.C. board. • PA UNIT (TOP VIEW) DRIVER FINAL BLACK CHASSIS) PRE-DRIVER CHASSIS) MP106 MP106 C135 B7020D C136 DRIVER MP106 MP106 R104 R103 IC101 Q102 Q101 J101...
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The combination of top side and bottom side of this page shows the actual configuration of P.C. board. • PA UNIT (BOTTOM VIEW) 7 - 16...
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Phone : +81 (06) 6793 5302 F ax : +81 (06) 6793 0013 : http://ww w .icom.c o .jp/ w o r ld/ind e x.html <Co r po r ate Headqua r ters> Communication Equipment 2380 116th A v e n ue N.E., Bell e vu e , W A 98004, U . S .A.
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