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All manuals and user guides at all-guides.com FM TRANSCEVERS S-14315XZ-C1 Jan. 2007...
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8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
All manuals and user guides at all-guides.com CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTION SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS............4-1 TRANSMITTER CIRCUITS .
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• Frequency stability : ±2.5 ppm ( –10˚C to +60˚C; +14˚F to +140˚F) • Power supply requirement : Specified Icom’s battery pack or 11.0 V ±15% external DC power (negative ground) • Current drain (at 7.2 V DC ; approx.)
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All manuals and user guides at all-guides.com SECTION 2 INSIDE VIEWS • LOGIC UNIT REGULATOR (IC12: S-812C50AMC) AF POWER AMPLIFIER (IC23: TA7368F) LCD DRIVER (IC22: LC75834W) CPU CLOCK (X2: CR-836) EEPROM (IC7: S24CS64A) (IC8: M30620) TX/RX AF LPF (IC3: LMV324IPW) TX/RX AF SWITCH (IC4: CD4066BPWR) •...
All manuals and user guides at all-guides.com SECTION 3 DISASSEMBLY INSTRUCTION 1. Removing the front panel 3. Removing shield plate q Remove the knob A and jack cap B. q Unscrew 2 screws A. w Unscrew the Antenna nut and 4 screws C and D. w Unsolder 2 points B, and remove the shield plate from e Disconnect the speaker connector.
All manuals and user guides at all-guides.com SECTION 4 CIRCUIT DESCRIPTION (Q13) and converted into the fixed frequency of 1st IF signal 4-1 RECEIVER CIRCUITS by mixing with the 1st Local Oscillator (LO) signals from the • ANTENNA SWITCHING VCO (Q76, D59−D61). By changing the 1st LO frequency, The antenna switching circuit toggles the receive (RX) line and only the desired frequency will pass through a pair of transmit (TX) line.
All manuals and user guides at all-guides.com SQUELCH CIRCUIT (RF AND LOGIC UNITS) The “NOIS” signal is applied to the CPU (LOGIC UNIT; IC8, • pin 17), and the CPU compares the “NOISE” signal and set - NOISE SQUELCH - reference level (squelch threshold level).
All manuals and user guides at all-guides.com APC (Automatic Power Control) CIRCUIT (RF UNIT) The operational amplifier compares the rectified voltage • and reference voltage “T3,” and the difference of the voltage The APC (Automatic Power Control) circuit prevents the transition of the transmit output power level which is caused is output from the operational amplifier pin 1.
All manuals and user guides at all-guides.com 4-4 POWER SUPPLY CIRCUITS DC voltage from the battery or external DC power supply is routed to whole circuit of the transciever via regulators. • POWER SUPPLY CIRCUITS Q9, Q10, Q18, Q19 SW5V COMMON;...
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All manuals and user guides at all-guides.com SECTION 5 ADJUSTMENT PROCEDURE ¤ REQUIRED TEST EQUIPMENTS When adjusting IC-V85/V85E/V85-T, following test equipments and JIG cables (see the illust below) are required. EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Measuring range : 0.1–10 W...
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All manuals and user guides at all-guides.com M ENTERING ADJUSTMENT MODE q Turn the power OFF. w Connect the JIG cable to the [SP] jack (see page 5-1). e While pushing [Y], [Z] and [CLR] keys, turn the power ON. During adjustment mode, the function display shows adjustment item and frequency as below.
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All manuals and user guides at all-guides.com ¤ ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE REFERENCE 1 • Connect a RF Power Meter or a dummy Rotate [CONTROL DIAL] during transmit to 146.00000 MHz FREQUENCY load to the antenna connector. adjust the frequency, then release the [PTT] and [Fr] •...
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All manuals and user guides at all-guides.com ¤ ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE S-meter NOTE: “RECEIVE SENSITIVITY” should be adjusted before “S-meter.” [Sr] Otherwise, “S-meter” will not be adjusted properly. 1 • Set the SSG as; Push [CLR] key to store the adjustment value and (automatic Frequency : Displayed frequency select the next adjustment item.
All manuals and user guides at all-guides.com SECTION 6 PARTS LIST [LOGIC UNIT] [LOGIC UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 1110006470 S.IC LMV324IPWR 5.6/21.2 R123 7030005290 S.RES ERJ2GEJ 682 X (6.8 k) 40.4/78.7 1130011770 S.IC CD4066BPWR 14.1/18.2 R126 7030005050 S.RES ERJ2GEJ 103 X (10 k) 22.7/66.6 1130012430 S.IC S-24CS64A0I-T8T1G...
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All manuals and user guides at all-guides.com SECTION 10 BLOCK DIAGRAM RF UNIT SW5V IC25:EW-460 D64:1SS400 D73:MA2S111 IC24:S-812C36AMC D71:1SS400 Q82:DTC144EU UNLK UNLOCK Q34:2SK1069 VCO5 VCO5 HOUT Rx:182.350-220.350MHz ANTENNA DC-AMP LVIN Tx;136.000-174.000MHz D3:1SV271 D1:HVU131 Tx/Rx:136.000-174.000MHz X4:CR-783 D4:MA2S077 D32:MA742 D2:MA77 MODOUT RD01MUS1 (15.3MHz) IC19:MB15E03SL Q83:2SC4617...
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All manuals and user guides at all-guides.com SECTION 11 VOLTAGE DIAGRAMS 11-1 LOGIC UNIT R413 PS5V MMZ1608Y121BT IC23 TC38-108-01 R115 C153 EP 7 AFOUT POUT 220K 120K PWGND 15 0 R126 C212 PREGND EP 8 R131 PHASE 0.01 150K LMV324IPW RIPPLE MMZ1005Y102CT R107...
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All manuals and user guides at all-guides.com 11-2 RF UNIT 2SC461 7 R 0.00V R514 SW5V T 4.81 VCON 4.80V EXCCL3225U 0.001 4.02V R 0.00V T 3.94 V C509 CR-783 2.55V 3.01V 2964 XP4601 2.81V 4.91V 1.8K 100K C464 C460 4.20V R440 0.5P...