Icom_IC-F7000_serv.pdf

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1、HF TRANSCEIVER iF7000 SERVICE MANUAL INTRODUCTION This service manual describes the latest service information for the IC-F7000 HF TRANSCEIVER at the time of publica- tion. DANGER NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V. This will ruin the trans

2、ceiver. DO NOT expose the transceiver to rain, snow or any liquids. DO NOT reverse the polarities of the power supply when connecting the transceiver. DO NOT apply an RF signal of more than 20 dBm (100 mW) to the antenna connector. This could damage the transceiv- ers front end. ORDERING PARTS Be su

3、re to include the following four points when ordering replacement parts: 1. 10-digit order numbers 2. Component part number and name 3. Equipment model name and unit name 4. Quantity required 1110004080S.ICPC2709TIC-F7000 MAIN UNIT5 pieces 8810005770 Screw BiH M38 ZK IC-F7000 Top cover10 pieces Addr

4、esses are provided on the inside back cover for your convenience. REPAIR NOTES 1. Make sure a problem is internal before disassembling the transceiver. 2. DO NOT open the transceiver until the transceiver is disconnected from its power source. 3. DO NOT force any of the variable components. Turn the

5、m slowly and smoothly. 4. DO NOT short any circuits or electronic parts. An insu- lated tuning tool MUST be used for all adjustments. 5. DO NOT keep power ON for a long time when the trans- ceiver is defective. 6. DO NOT transmit power into a signal generator or a sweep generator. 7. ALWAYS connect

6、a 50 dB to 60 dB attenuator between the transceiver and a deviation meter or spectrum ana- lyzer when using such test equipment. 8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. To upgrade quality, any electrical or mechanical parts and internal c

7、ircuits are subject to change without notice or obligation. MODEL IC-F7000 SYMBOL AUS OTH VERSION Autralia Other Icom, Icom Inc. and are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, ussia and/or other countries. TABLE OF CONTENT

8、S SECTION 1 SPECIFICATIONS SECTION 2INSIDE VIEWS SECTION 3ABOUT EXTERNAL REFERENCE SIGNAL INPUT SECTION 4CIRCUIT DESCRIPTION SECTION 5ADJUSTMENT PROCEDURES SECTION 6PARTS LIST SECTION 7MECHANICAL PARTS AND DISASSEMBLY 7 - 1RC-26. 7 - 1 7 - 2HM-146 . 7 - 1 7 - 3IC-F7000. 7 - 1 SECTION 8SEMI-CONDUCTOR

9、 INFORMATION SECTION 9BOARD LAYOUTS 9 - 1HM-146 .9 - 1 9 - 2RC-26 9 - 2 - 1CONNECT BOARD . 9 - 1 9 - 2 - 2REAR BOARD. 9 - 1 9 - 2 - 3DISPLAY BOARD . 9 - 3 9 - 3IC-F7000 9 - 3 - 1DSP BOARD.9 - 5 9 - 3 - 2MAIN UNIT. 9 - 7 9 - 3 - 3PA UNIT. 9 - 9 9 - 3 - 4PLL UNIT. 9 - 11 9 - 3 - 5DRIVER BOARD. 9 - 13

10、9 - 3 - 6VARISTOR-1 BOARD. 9 - 13 9 - 3 - 7VARISTOR-2 BOARD. 9 - 14 SECTION 10BLOCK DIAGRAM SECTION 11WIRING DIAGRAM SECTION 12VOLTAGE DIAGRAMS 12 - 1RC-26 and HM-146.12 - 1 12 - 2IC-F7000 12 - 2 - 1MAIN UNIT (1). 12 - 2 12 - 2 - 2MAIN UNIT (2). 12 - 3 12 - 2 - 3MAIN UNIT (3). 12 - 4 12 - 2 - 4PA UN

11、IT. 12 - 5 12 - 2 - 5PLL UNIT (1). 12 - 6 12 - 2 - 6PLL UNIT (2). 12 - 7 12 - 2 - 7DSP BOARD. 12 - 8 1 - 1 SECTION 1SPECIFICATIONS All stated specifications are subject to change without notice or obligation. IC-F7000 GENERAL Frequency coverage: Receive500 kHz29.9999 MHz Mode: J3E (USB/LSB), *J2B (A

12、FSK), *F1B (FSK), *A1A (CW), A3E *OTH version only Antenna impedance: 50 Frequency stability: 50 Hz Power supply requirement: 13.8 V (10.8 V15.6 V) DC Negative ground Current drain (at 13.8 V DC): RX; 3.0 A at Max. audio power TX; 23 A at Max. output output Usable temperature range: 10C to +60C; 14F

13、 to +140F Dimensions (projections not included): 240(W) 72(H) 239(D) mm; 9 716(W) 2 2732(H) 9 1332(D) in. Weight: Approx. 4.6 kg; 10 lb 2.26 oz TRANSMITTER Output power: 1.629.9999 MHz100, 50, 10 W PEPAUS 1.63.9999 MHz125, 50, 10 W PEPOTH 4.029.9999 MHz100, 50, 10 W PEPOTH Spurious emissions: Less t

14、han 43 dB at peak output power (Maximum power) Carrier suppression: Less than 40 dB at peak output power (Maximum power) Unwanted sideband suppression: Less than 50 dB at peak output power (Maximum power) with 1500 Hz AF input Microphone impedance: 600 RECEIVER Sensitivity: (Pre-amplifier is ON) Squ

15、elch sensitivity: Spurious response rejection: More than 70 dB 1.629.9999 MHz AF output power: 4 W at 4 load with 10% distortion Clarity variable range: 150 Hz MODE J3E A3E FREQUENCY 0.51.5999 MHz 1.629.9999 MHz 0.51.5999 MHz 20 dB SINAD 28 dBV emf 0 dBV emf 46 dBV emf 10 dB S/N 14 dBV 14 dBV 32 dBV

16、 MODE J3E at 13.800 MHz A3E at 1.000 MHz Threshold Less than +20 dBV Less than +30 dBV Tight Less than +90 dBV Less than +110 dBV Spec (MHz)No Spec (MHz) 1.65.49995.55.7299 5.735.99996.06.6999 6.78.09998.19.999 Transmit10.011.199911.213.3999 13.414.999915.017.9999 18.018.999919.019.9999 20.020.99992

17、1.022.9999 23.027.999928.029.9999 1 - 2 RC-26 REMOTE CONTROLLER GENERAL Microphone impedance: 600 Audio output power: More than 2 W at 4 load with 10% distortion Audio output impedance: 4 Usable temperature range: 10C to +60C; +14F to +140F Dimension (projections not included): 150(W) 50(H) 51(D) mm

18、; 5 2932(W) 1 3132(H) 2(D) in. Weight: Approx. 220 g; 7.8 oz (Connection cable is not included.) SP-25 EXTERNAL SPEAKER GENERAL Impedance: 4 Input power: Rated input;5 W Maximum input;7 W Usable temperature range: 20C to +60C; 4F to +140F Dimension (projections not included): 106(W) 62(H) 46(D) mm;

19、4 316(H) 2 716(H) 1 1316(D) in. Weight: Approx. 370 g; 13.5 oz All stated specifications are subject to change without notice or obligation. 1 - 3 Unit: mm (inch) 240 (9 7 16) 287.8 (11 11 32) 239.3 (9 13 32) 231 (9 3 32) 155 (6 3 32) 133 (5 1 4) 50 (1 31 32)50 (1 31 32) 5.4 (7 32) (d) 32.2 (1 9 32)

20、 1.7 (1 16) 1.9 (1 16) 22.5 (7 8) 6 (1 4) 72 (2 27 32) 87 (3 7 16) 5.4 (7 32)5.4 (7 32) 55.4 (2 3 16) 25 (31 32) 25 (31 32) 1 - 4 Unit: mm (inch) 5.4 (7 32)5.4 (7 32) 173.2 (6 13 16) 51.2 (2 1 32) 40 (1 9 16) 40 (1 9 16)45 (1 25 32)40 (1 9 16) 6.5 (1 4) 14.6 (9 16) 9 (11 32) 150 (5 29 32) 158.2 (6 7

21、 32) 50 (1 31 32) 66.6 (2 5 8) 66.3 (2 5 8) 37 (1 15 32) 5.5 (7 32) 89 (3 1 2) Unit: mm (inch) SECTION 2INSIDE VIEWS 2 - 1 RC-26 HM-146 (MIC UNIT) CONNECT BOCONNECT BOARDARD DISPLADISPLAY BOARD +8V regulator Y BOARD +8V regulator (IC8310:(IC8310: TA78L08F) +10V regulator TA78L08F) +10V regulator (IC

22、8301:(IC8301: AN8009M) AN8009M) +5V regulator+5V regulator (IC8290:(IC8290: TA7805F) Reset IC TA7805F) Reset IC (IC8202:(IC8202: S-80942CNMC-G9C) S-80942CNMC-G9C) CPUCPU (IC8201:(IC8201: HD64F2134AF20) HD64F2134AF20) Dimmer controllerDimmer controller (IC8280:(IC8280: TS522ID) TS522ID) CONNECT BOARD

23、 DISPLAY BOARD +8V regulator (IC8310: TA78L08F) +10V regulator (IC8301: AN8009M) +5V regulator (IC8290: TA7805F) Reset IC (IC8202: S-80942CNMC-G9C) CPU (IC8201: HD64F2134AF20) Dimmer controller (IC8280: TS522ID) DTMF generDTMF generatorator (IC1:(IC1: LC7366NM) LC7366NM) MicrophoneMicrophone (MC1:(M

24、C1: KUB2823-011500) KUB2823-011500) DTMF generator (IC1: LC7366NM) Microphone* (MC1: KUB2823-011500) *Located under side of the point 2 - 2 IC-F7000 (BOTTOM VIEW) IC-F7000 (TOP VIEW) P PA UNITA UNIT PLL ICPLL IC (IC5401:(IC5401: LMX2306TM) LMX2306TM) VARISTVARISTOR-1 BOOR-1 BOARD VARIST ARD VARISTOR

25、-2 BOOR-2 BOARD +8V regulator ARD +8V regulator (IC6601:(IC6601: TA7808F) TA7808F) DRIVER BODRIVER BOARDARD Push-pull ampifierPush-pull ampifier Q6401, Q6402 Q6401, Q6402 : SD1405 : SD1405 * Located under side* Located under side of the point of the point PA UNIT PLL UNIT Filter circuit DDS IC (IC57

26、01: SC-1287) DDS GATE ARRAY* (IC5101: SC-1246A) TCXO* (X5251: CR-770) PLL IC* (IC5401: LMX2306TM) VARISTOR-1 BOARD VARISTOR-2 BOARD +8V regulator (IC6601: TA7808F) DRIVER BOARD Push-pull ampifier Q6401, Q6402 : SD1405 * Located under side of the point * TX 1st mixTX 1st mixerer (Q702,Q703:(Q702,Q703

27、: 3SK131) 3SK131) YGR amplifierYGR amplifier (IC1: PC2709T)(IC1: PC2709T) MAIN UNITMAIN UNIT DSP BODSP BOARDARD RF 3rd mixRF 3rd mixerer (IC501: TA4107F)(IC501: TA4107F) TX 3rd mixTX 3rd mixerer (IC901: TA4107F) A (IC901: TA4107F) AGC amplifierGC amplifier (IC1101: TS522ID)(IC1101: TS522ID) RF 1st m

28、ixRF 1st mixerer 1st IF amplifier1st IF amplifier (Q203:(Q203: 3SK131) 3SK131) 2nd mix2nd mixerer (D303:(D303: HSB88WS) HSB88WS) CPUCPU (IC3303:(IC3303: M30624FGAFP) M30624FGAFP) ALC/APC circuitALC/APC circuit (IC1201:(IC1201: NJM3403A NJM3403AV)V) Reset ICReset IC (IC3302:(IC3302: S-80842CNMC) S-80

29、842CNMC) AF powAF power amplifierer amplifier (IC1601:(IC1601: LA4425A) LA4425A) TX 1st mixer (Q702,Q703: 3SK131) YGR amplifier (IC1: PC2709T) MAIN UNIT DSP BOARD RF 3rd mixer (IC501: TA4107F) TX 3rd mixer (IC901: TA4107F) AGC amplifier (IC1101: TS522ID) RF 1st mixer (Q201-Q204: MBU3104) 1st IF ampl

30、ifier (Q203: 3SK131) 2nd mixer (D303: HSB88WS) CPU (IC3303: M30624FGAFP) ALC/APC circuit (IC1201: NJM3403AV) Reset IC (IC3302: S-80842CNMC) AF power amplifier (IC1601: LA4425A) SECTION 3ABOUT EXTERNAL REFERENCE SIGNAL INPUT 3 - 1 IN CASE OF USING EXTERNAL REFERENCE SIGNAL NEED TO MODIFYthe PLL unit

31、(bottom side) as below when using external reference. q Remove R5251 from the PLL unit. w Solder disconnect points (CP5041) on the PLL unit. 14 8 14 85 5 CP5041 R5251 w q 3 - 2 IN CASE OF USING INTERNAL REFERENCE SIGNAL NEED TO MODIFYthe PLL unit (bottom side) as below. Otherwise the transceiver doe

32、s not work properly. q Unsolder connect points (CP5041) on the PLL unit. w Solder R5251 to the original position, or solder disconnect points (CP5251) on the PLL unit. CONNECTION Connect the external reference oscillator to the IC-F7000 as below. q w CP5251 CP5041 External reference IC-F7000 front p

33、anel REF IN Frequency: 32 MHz Level: 2.08.0 Vp-pat 15 k impedance 4 - 1 SECTION 4CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 RF FILTER CIRCUIT (PLL AND MAIN UNITS) Received signals from the antenna connector are applied to the transmit/receive switching and protection relay (PLL unit; RL7301) wh

34、ich is controlled by the CPU via the “TRXS” line. The signals pass through the 30 MHz cut-off low-pass filter (PLL unit; L7321, C7321C7323, C7325), and then applied to the MAIN unit via the J7321. The signals pass through the 1.6 MHz cut off high-pass fil- ter (MAIN unit; L51L54, L57, C54, C56, C57,

35、 C59, C61C64, C69) and transmit/receive switch (D54), and are then applied to one of the bandpass filters (including one low-pass filter for below 2.0 MHz). These filters are selected by the filter control signals (B0B8) as described in the table below. The filtered signals are applied to the pre-am

36、plifier (MAIN unit; Q102, Q103), and then passed through the 33 MHz cut-off low-pass filter (L202, L203, C202C206). The filtered signals pass through the low-pass filter (MAIN unit; L202, L203, C202C206), and are then applied to the 1st mixer circuit (Q201, Q202, Q204, Q205). 4-1-2 1ST MIXER AND IF

37、CIRCUITS (MAIN UNIT) The 1st mixer circuit converts the received signals into a fixed frequency, 64.445 kHz 1st IF signal using PLL output frequency. By changing the PLL frequency, only the desired frequency is picked up at the 64.445 kHz bandpass filter (FI201) at the next stage. The IF amplifier (

38、Q203) and resonator circuits are designed between the filter pair. The PLL output signal (1LO) enters the MAIN unit via the J601 and is amplified at the 1st LO amplifier (Q601). The amplified signal is passed through the 100 MHz cut-off low-pass filter (L602L604, C602, C604C607, C609) to suppress ha

39、rmonic components, and then applied to the 1st mixer circuit (Q201, Q202, Q204, Q205). 4-1-3 2ND MIXER AND IF CIRCUITS (MAIN UNIT) The 1st IF signal from the bandpass filter (FI201) is convert- ed again into a 455 kHz 2nd IF signal at the 2nd mixer cir- cuit (D303, L303, L304). The 2nd LO signal (2L

40、O) from the PLL unit enters the MAIN unit via the J301 to be applied to the 2nd mixer circuit. 4-1-4 3RD MIXER AND IF CIRCUITS (MAIN UNIT) The 2nd IF signal passes through the low-pass filter (L305, C308, C310, C311, C315), and is then applied to the IF amplifier (Q401) via the ceramic bandpass filter (FI401). The amplified signal passes through the other ceramic bandpass filter (FI402), and then applied to the 3rd mixer circuit via the IF amplifier (Q501). The 2nd IF