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VHF/UHF DIGITAL TRANSCEIVER S-14528XZ-C1 Apr. 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 the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
: 10.0–16.0 V DC for external DC power, , DV More than 45 dB (Narrow) or specified Icom’s battery pack More than 300 kHz/–3 dB • Digital transmission speed : 4.8 kbps Less than 700 kHz/–20 dB • Voice coding speed : 2.4 kbps...
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SECTION 2. INSIDE VIEWS • LOGIC UNIT EEPROM (IC51) LCD DRIVER (IC603) DIGITAL/ANALOG CPU3V REGULATOR MODE SWITCH (IC100) (IC303) MIC GAIN SWITCH (Q303) AF MUTE SWITCHES (Q403, 404) ALC AMP (IC300) MIC LINE SWITCH (IC301) (IC302) AF FILTER (IC501 ) AF BUFERF AF POWER AMP (IC504)
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• MAIN UNIT (TOP VIEW) IF AMP AGC VOLTAGE DETECTOR (Q103) (Q104) RX AF LINE SWITCH (IC500) 1ST IF FILTER (WFM) (FI2) TONE FILTER 1ST IF FILTER (FM/AM/DV) (IC150) (FI50) IF IC (IC100) AF FILTER (IC501) CURRENT DETECT (IC800) SERIAL/PARALLEL CONVERTER (IC701) 2ND IF FILTER (WIDE/NARROW)
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• RF UNIT TX POWER AMPLIFIER (Q100) VCO UNIT TX LO AMPLIFIER (IC100) RF CIRCUITS SHIFT SWITCH (Q252, 302) R3V LINE SWITCH HV LINE SWITCH (Q251, 303, 703) (Q1000) 1 - 1...
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SECTION 3. DISASSEMBLY INSTRUCTION 1. Removing the rear panel 3. Removing the RF UNIT q Unscrew 2 screws A and remove the plate B. q Unsolder 2 points A. w Unscrew 2 screws C and 2 screws D. w Unsolder 3 points B and remove the shield plate C. e Disconnect the flat cable E from MAIN UNIT.
SECTION 4. CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS • 174–259.995 MHz RF CIRCUITS (RF UNIT) The RX signals are passed through the LPF, HPF, ANT RX signals from the antenna are sorted by its frequency by SW, ATT, band SW (D302), HPF and another band SW in the filters and gone through RF circuits for each bands.
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1ST IF CIRCUIT (MAIN UNIT) 2ND IF AND DEMODULATOR CIRCUITS (MAIN UNIT) The RX signals from the RF circuits are applied to the 1st <For FM, AM and DV mode> mixer (RF: IC900) to be converted into the 1st IF signal, The 1st IF signal from the 1st IF AMP (Q100) is applied to by being mixed with the 1st Local Oscillator (LO) signals the IF IC (IC100).
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RX AF CIRCUITS (LOGIC UNIT) SQUELCH CIRCUIT • FM/W-FM/AM MODE The squelch circuit cuts off the AF output signals when The AF signals from the FM/AM demodulator circuits are no RF signals are received. Detecting noise components passed through the mode SW (MAIN UNIT: IC500D/C/A) (approx.
4-2 TRANSMITTER CIRCUITS • DV MODE TX AF CIRCUITS (LOGIC UNIT) The MIC signals from the microphone (MC300) are passed • FM MODE through the MIC gain SW (Q303) and applied to the MIC MIC signals from the internal/external microphone (MIC AMP (Q302, 304).
APC CIRCUIT (RF UNIT) The output voltage is applied to the ATT (D101, 102) to con- The APC (Automatic Power Control) circuit stabilizes trol the attenuation level, to adjust the input level of the YGR transmit output power to prevent transmit output power level AMP (Q102) so that the TX output power is stable.
4-4 CPU (LOGIC UNIT: IC1) PORT ALLOCATION LINE DESCRIPTION STATUS CONDITION NAME Transceiver power control. While the transceiver power is PCON AFMUTE AF mute signal to the AF mute SW (LOGIC UNIT: Q403, 404). AF mute. MUTE TX mute signal. TX mute.
4-4 CPU PORT ALLOCATION (continued) LINE DESCRIPTION STATUS CONDITION NAME Reset signal from the reset IC (LOGIC UNIT: IC100). RESET – UNLK Unlock signal from the PLL IC (MAIN UNIT: IC800). PLL is locked. RX232 RS-232 data (RXD). – – TX232 RS-232 data (TXD).
SECTION 5. ADJUSTMENT PROCEDURE 5-1 PREPARATION ¤ REQUIRED INSTRUMENTS INSTRUMENTS SPECIFICATION INSTRUMENTS SPECIFICATION • OPC-254L (Optional product) DC Cables JIG cables (See the illust below) • Connects to battery terminals Output voltages : 13.5 V DC 7.4 V DC Input impedance : 50 kΩ...
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M CONNECTION Oscilloscope Modulation analyzer Standard signal generator (DC measurable) –20 to 90 dBµ (–127 to –17 dBm) Attenuator RF power meter Frequency 30 dB or 40 dB counter JIG cables CAUTION: (See the page 5-1) DO NOT transmit while SSG is connected to the antenna connector.
5-2 FREQUENCY ADJUSTMENT Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM REFERENCE 1) Set the power supply voltage to 7.4 V. 2) Connect an RF power meter to the antenna connector. 440.0000 FREQUENCY [FR]...
5-4 IDLING CURRENT ADJUSTMENT (at 7.4 V) Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM DRIVE AMP 1 1) Set the power supply voltage to 7.4 V. 2) Connect an RF power meter to the antenna connector.
5-5 IDLING CURRENT ADJUSTMENT (at 13.5 V) Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM DRIVE AMP 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) IDLING CURRENT 2) Connect an RF power meter to the antenna connector.
5-6 TRANSMIT POWER ADJUSTMENT (at 5.0 V) Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM TRANSMIT 1 1) Set the power supply voltage to 5.0 V. 2) Connect an RF power meter to the antenna connector.
5-8 TRANSMIT POWER ADJUSTMENT (at 13.5 V) Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM TRANSMIT POWER 1 1) Set the power supply voltage to 13.5 V. –...
5-9 DEVIATION ADJUSTMENTS Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM FM DEVIATION 1 1) Set the power supply voltage to 7.4 V. 1) Connect a modulation analyzer to the antenna connector through an attenuator, and set is as;...
5-10 TONE DEVIATION ADJUSTMENTS Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL]. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM TONES DEVIATION 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and set is as;...
5-11 RECEIVE SENSITIVITY ADJUSTMENTS 1) Select an adjustment item (band) using [2] / [8]. 2) Set the SSG as specifi ed (frequency, deviation and output level). 3) Push the [BAND] to adjust (automatic) and store the adjustment value. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM...
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5-11 RECEIVE SENSITIVITY ADJUSTMENT (continued) 1) Select an adjustment item (band) using [2] / [8]. 2) Set the SSG as specifi ed (frequency, deviation and output level). 3) Push the [BAND] to adjust (automatic) and store the adjustment value. ADJUSTMENT ADJUSTMENT OPERATION VALUE...
5-12 S-METER ADJUSTMENT 1) Select an adjustment item using [2] / [8]. 2) Set the SSG as specifi ed (frequency, deviation and output level). 3) Push the [BAND] to adjust (automatic) and store the adjustment value. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM S-METER CURVE NOTE:...
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5-12 S-METER ADJUSTMENT (continued) 1) Select an adjustment item using [2] / [8]. 2) Set the SSG as specifi ed (frequency, deviation and output level). 3) Push the [BAND] to adjust (automatic) and store the adjustment value. ADJUSTMENT ADJUSTMENT OPERATION VALUE ITEM S-METER S3 LEVEL...
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SECTION 8. BOARD LAYOUTS The combination of top side and bottom side of this page shows the actual configuration of P.C. board. [MIC] [SP] • LOGIC UNIT (TOP VIEW) • MAIN UNIT C222 C222 R218 R218 C221 C221 C220 C220 Q203 Q203 R217...
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[MIC] The combination of top side and bottom side of this J701 page shows the actual configuration of P.C. board. [SP] • LOGIC UNIT J700 [DIAL] (BOTTOM VIEW) • MAIN UNIT (BOTTOM VIEW) EP705 EP702 C710 EP704 C719 R133 R218 EP707 C130 R125...
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SECTION 9. BLOCK DIAGRAM • BLOCK (1/2) LOGIC UNIT J701 [MIC] INTSP INTSP [SP] CLONE CLONE CLONE Q403:RSR025N03 J700 Q404:RSR025N03 IC400:TA7368F VOLOUT Int.SPEAKER MUTE Q700:CPH3313 Q400:2SB120 MAIN UNIT Q701:UNR9213 Q401:XP1501 EXITMIC D700:MA2S728 Q402:2SA1588 AFMUT E Q305:UNR9213 CTRL AF AMP DTMF AFON VCCSW +5SW...
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• BLOCK (2/2) Q802:2SK880 VCO UNIT LV DET VCOLV RF UNIT Q1:2SC5195 D5:1SV325 MAIN UNIT Q 2:UNR9211 D6:1SV325 D1:1SV325 Q 50:UNR9211 D2:1SV308 VCC-I D11:1SV271 Q801:UNR911N D3:1SV325 D51:1SV271 Q803:XP4601 Q800:XP1115 D4:MA2S111 Q200:2SC5006 D52:1SV271 D54:1SV307 BCVCO3 D55:1SV307 VCO3V VCO3V VCO3V VVCO3 BUFF UVCO3 D850:1SV308 D101:JDP2S04E...
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LOGIC UNIT (2/2) EP501 MMZ1005Y102CT R350 R351 MMZ1005Y102CT R347 EP500 C330 R504 MMZ1005Y102C T 100K EP502 0.001 D ICK 100K R506 I C501 DIUD EP503 CP551 C510 100k MMZ1005Y102C T I C303 R SSI R501 C505 XTAL R505 MO D NOISE XTAL/CLK_RX CP06S...
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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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