Page 3 - TABLE OF CONTENTS
TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY INSTRUCTIONS SECTION 4 OPTIONAL UNIT INSTALLATION SECTION 5 CIRCUIT DESCRIPITON 5-1 RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 4 - GENERAL
1 - 1 SECTION 1 SPECIFICATIONS [USA], [GEN] [EUR] GENERAL • Frequency coverage 136–174 MHz • Type of emission Wide 16K0F3E (25.0 kHz) Middle – 14K0F3E (20.0 kHz) Narrow 11K0F3E (12.5 kHz) 8K50F3E (12.5 kHz) • Number of programable channels 128 channels (8 zones) • Antenna impedance 50 Ω (nominal) • ...
Page 5 - TOP VIEW; PA UNIT; BOTTOM VIEW
SECTION 2 INSIDE VIEWS 2 - 1 APC amplifier(IC701: TA75S01F) Power amplifier(Q701: RD07MVS1) Drive amplifier(Q702: RD01MUS1) Antenna switch(D701: 1SV307) LCD driver(IC20: LC75834W) +5 regulator Q26: 2SB1132 Q27: XP6501 Q28: UNR9213J CPU(IC22: HD64F2238BTF13V) EEPROM(IC10: HN58X2464TI) Reset IC(IC8: B...
Page 6 - REMOVING THE MAIN UNIT
SECTION 3 DISASSEMBLY INSTRUCTIONS 3 - 1 2 REMOVING THE MAIN UNIT q Remove the main seal F . w Unscrew VR nut G , and remove the top plate H . 3 REMOVING THE PA UNIT q Unscrew 3 screws M . w Unsolder 4 points N , and take off the PA UNIT in the direction of the arrow. 1 REMOVING THE CHASSIS UNIT q U...
Page 7 - NOTE: When uninstalling the unit
4 - 1 SECTION 4 OPTIONAL UNIT INSTALLATION CAUTION! Optional unit installation should be done at authorized Icom servise center only. Install the optional unit as follows. q Rotate [VOL] to turn the power OFF, and remove the battery pack. w Remove the unit cover as below. (The removed unit cover can...
Page 8 - -1 RECEIVER CIRCUITS; • 2nd IF AND DEMODULATOR CIRCUITS
SECTION 5 CIRCUIT DESCRIPTION 5 - 1 5-1 RECEIVER CIRCUITS 5-1-1 ANTENNA SWITCHING CIRCUIT (PA UNIT) The antenna switching circuit toggles the receive (RX) line and transmit (TX) line. The received signals from the antenna are passed through the low-pass filter (ANT UNIT; L801, L802, C802, C803, C807...
Page 9 - • DTMF; -2 TRANSMITTER CIRCUITS; • MIC SIGNALS
5 - 2 The AF signals from the analog switch (IC3, pin 11) are applied to the volume buffer amplifi er (IC6, pin 9). The buffer-amplified AF signals are adjusted its level (= audio level) by volume control pot (R315), then applied to the AF power amplifier (IC15, pin 4) and amplified to the 0.5 W of ...
Page 11 - BPF
5 - 4 5-3 PLL CIRCUITS 5-3-1 VOLTAGE CONTROLLED OSCILLATORS (VCOs; MAIN UNIT) VCO is an oscillator whose oscillating frequency is controlled by adding voltage (lock voltage). This transceiver has 2 VCOs RX VCO (Q17, D9, D11, D33) and TX VCO (Q16, D10, D13, D34). The RX VCO oscillates the 1st LO sign...
Page 12 - CPU; -4 POWER SUPPLY CIRCUITS
5 - 5 CPU5 V reg u rator +5 V reg u rator S5 V reg u rator T5 V reg u rator R5 V reg u rator Po w er s w itch R315 F701 (PA u nit ) Q26–Q2 8 IC17 Q23 Q24, Q49 Q25 V CC CPU5 CPU +5 V S5 V “S5C” “P W O N ” V oltage line Control signal 8 22 8 7 88 “T5C” “R5C” T5 V LED b acklight dri v er (Q45), LCD dri...
Page 14 - SYSTEM REQUIREMENTS
SECTION 6 ADJUSTMENT PROCEDURES 6-1 PREPARATION When adjusting IC-F3020 series, CS-F3020 CLONING SOFTWARE, CS-F3020 ADJ ADJUSTMENT SOFTWARE (Rev. 1.0 or later), OPC-478/U JIG CABLE (modifi ed OPC-478/U CLONING CABLE ; see the page 6-2) and the following test equipments are required. EQUIPMENT GRADE ...
Page 15 - to the antenna connector; DO NOT; JIG cable 2; • CONNECTION
6 - 2 IC-F3020 series FM deviation meter Osciiloscope to the antenna connector Attenuator 10 dB or 20 dB RF power meter 0.1–10 W/50 Frequency counter Standard signal generator 0.1 µV to 32 mV (–127 dBm to –17 dBm) CAUTION! DO NOT transmit while the SSG is connected tothe antenna connector SINAD mete...
Page 16 - • PC SCREEN EXSAMPLE; Tq
6 - 3 • PC SCREEN EXSAMPLE Reference frequency Receive sensitivity (Manually) PLL lock voltage preset S-meter Reload data PLL lock voltage (verify) Squelch *; [EUR] only CTCSS/DTCS deviation FM deviation (Narrow) FM deviation (Middle*/Wide) Modulation balance Transmit output power (Hi) Transmit outp...
Page 17 - -2 FREQUENCY ADJUSTMENT
6 - 4 6-2 FREQUENCY ADJUSTMENT Select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected PC’s keyboard. ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE UNIT OPERATION PLL LOCKVOLTAGE[RX LVA] 1 • Channel • Receiving : CH 1 PC scre...
Page 18 - -3 TRANSMIT ADJUSTMENT
6 - 5 6-3 TRANSMIT ADJUSTMENT Select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected PC’s keyboard. ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE UNIT OPERATION OUTPUTPOWER[Power (Hi)] 1 • Channel • Transmitting : CH 3 Top p...
Page 19 - -4 RECEIVE ADJUSTMENT; jack
6 - 6 6-4 RECEIVE ADJUSTMENT Select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected PC’s keyboard. ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE UNIT LOCATION RECEIVESENSITIVITY[BPF (T1)][BPF (T2)] NOTE: “RECEIVE SENSITIVITY...
Page 26 - Screw abbreviations; Refer to SECTION 10 BOARD LAYOUTS.
SECTION 8 MECHANICAL PARTS AND DISASSEMBLY 8 - 1 Screw abbreviations BT: Self-tapping PH: Pan head ZK, ZK3: Black FH: Flat head NI: Nickel SUS: Stainless EP1 EP2 MP1 MP2 MP3 MP4 J1 6910015910 Connector ANT connector-104 1 J2 6910015860 Connector IMSA-6277S-02A-G 1 SP1 2510001060 Speaker K036NA500-47...
Page 27 - UNIT abbreviations
8 - 2 MP2* (C) MP33 (C) MP20 (C) SP1 (C) MP12* (C) MAIN Unit MP28 (C) MP6 (M) MP1 (M) MP5 (M) MP4 (M) EP7 (M) DS3 (M) MP3 (M) MP28 (C) MP28 (C) R315 (M) MP2 (M) MP28 (C) MP28 (C) J701 (P) J901 (CN) PA Unit CONNECT Unit MP28 (C) ANT Unit MP1 (C) MP801 (A) MP17 (C) MP35 (C) J1 (C) MP8 (C) MP31 (C) MP1...
Page 28 - • TRANSISTORS AND FET's
SECTION 9 SEMICONDUCTOR INFORMATION • TRANSISTORS AND FET's • DIODES 9 - 1 B E C B C E B E C B E C B E C B E C B E C G D S S D G B E C B E C D S G2 G1 G1 G2 S D B E C B E C E1 C2 B1 C1 E2 B2 E1 B1 B2 C1 C2 E1 B2 E2 C1 C2 B1 E1 E2 B2 C1 B1 C2 G S D S S D G G S D 2SA1577 T106 R 2SB1132 T100 R 2SC4081 ...
Page 29 - BOARD LAYOUTS
H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H55 H60 H65 H70 H75 H80 H85 H90 H95 H100 H105 H0 V5 V10 V15 V0 V25 V30 V35 V20 V45 V40 to SPEAKER“SP1” (CHASSIS) J4 4 2 3 1 SP GND GND GND TOPSWITCH MIC 7 4 1 P0 P1 P2 P3 0 8 5 2 # 9 6 3 SECTION 10 BOARD LAYOUTS 10 - 1 • BC-160 (TOP VIEW) • ANT UNIT (TOP VIEW) ...
Page 30 - • CONNECT UNIT
H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H55 H60 H65 H70 H75 H80 H85 H90 H95 H100 H105 H0 V5 V10 V15 V0 V25 V30 V35 V20 V45 V40 20 1 21 40 J5 OPV1 OPV2 OPV3 GND OPT3 OPT2 OPT1 SIGO BU S Y NC BREF NC DMI MCIN DMO MCO T PTT O PTTI GND D_IF GND CCK CSI CSO NC CIRQ CSS REM DA F O AFOUT DISC RMUT BEPO AFON...
Page 31 - BLOCK DIAGRAM; IF IC; MAIN UNIT; ANT UNIT; CONNECT
SECTION 11 BLOCK DIAGRAM 11 - 1 Explanatory notes +B LINE LPF IC6 LM2902PWR LPF LPF DTMF ENCODE IC6 LM2902PWR LPF IC7 NJM12902V RESET IC8 BD5242G SHIFT SW D6 MA2S077 ANT SW CURRENT DET D701: 1SV307 D704: 1SV307 D706: 1SV307 PWR AMP Q701 RD07MVS1 TX/RX SW D16:1SV307 D17: MA2S077 RX VCO Q17 2SC5006 TX...
Page 32 - VOLTAGE DIAGRAMS
SECTION 12 VOLTAGE DIAGRAMS 12 - 1 %XPLANATORYNOTES 6/,4!'%,).% 48,).% 28,).% #/--/.,).% # # # P # P # # $ 36 # , M ( # # # P # , M ( # # P # # P # P # # P # P # P 2 K 2 K # P # # # P # P # P 8 #$"##8 # # P # P # # P # # # P # # # # P # # # # P # P # P # # # # P # # # # $ -!3 $ -!3 #42, '.$ ....
Page 33 - LPF
12 - 2 Explanatory notes VOLTAGE LINE TX LINE RX LINE COMMON LINE C707 0.001 C703 47p C702 100p R7140.15 L901BLM21P300S L7037.5nH C734 0.001 D702RB706F-40 R706 4.7k C723 0.001 C759 0.001 C718 0.001 R703 4.7k C754 0.001 D703RB706F-40 R726 4.7k R710 4.7k R709 22k C7010.001 C7420.001 R704 22 Q7042SC500...
