IC-E80AD_D_serv.pdf

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1、S-14528XZ-C1 Apr. 2009 VHF/UHF DIGITAL TRANSCEIVER This service manual describes the latest technical information for the IC-80AD and IC-E80D VHF/UHF DIGITAL TRANSCEIVER at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than specified. T

2、his will ruin the transceiver. 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 transceivers front-end.

3、 To upgrade quality, any electrical or mechanical parts and internal circuits are subject to change without notice or obligation. MODELVERSION TYPE OF EMISSION Max. TX POWER (VHF/UHF) IC-80AD USA F2D, F3E, F7W5 W/5 W SEA CHN KOR AUS EXP IC-E80D EUR UK ITR FRA Be sure to include the following four po

4、ints when ordering replacement parts: 1. 10-digit Icom parts numbers 2. Component name 3. Equipment model name and unit name 4. Quantity required 1110003491 S.IC TA31136FNG IC-E80D/80AD MAIN UNIT 5 pieces 8820001210 Screw 2438 screw IC-E80D/80AD Top cover 10 pieces Addresses are provided on the insi

5、de back cover for your convenience. 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. ORDERING PARTS 1. Make sure that the problem is internal before disassembling the

6、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 them slowly and smoothly. 4. DO NOT short any circuits or electronic parts. An insulated tuning tool MUST be used for all adjustments. 5. DO N

7、OT keep power ON for a long time when the transceiver is defective. 6. DO NOT transmit power into a Standard Signal Generator or a Sweep Generator. 7. ALWAYS connect a 50 dB to 60 dB attenuator between the transceiver and a Deviation Meter or Spectrum Analyzer when using such test equipment. 8. READ

8、 the instructions of test equipment throughly before connecting a test equipment to the transceiver. REPAIR NOTES INTRODUCTION CAUTION (IC-80AD) UNIT ABBREVIATIONS: F=FRONT UNIT L=LOGIC UNIT M=MAIN UNIT V=VCO UNIT R=RF UNIT TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3

9、DISASSEMBLY INSTRUCTION SECTION 4 CIRCUIT DESCRIPITON 4-1 RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10、. . . . . . . . . . 4-4 4-3 FREQUENCY SYNTHESIZER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 4-4 CPU (LOGIC UNIT: IC1) PORT ALLOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 4-5 VOLTAGE BLOCK DIAGRAM . . . . . .

11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 SECTION 5 ADJUSTMENT PROCEDURE 5-1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5-2 FREQUENCY ADJUSTMENT. . . . .

12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5-3 IDLING CURRENT ADJUSTMENT (at 5.0 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5-4 IDLING CURRENT ADJUSTMENT (at 7.4 V). . . . . . . . . . . . . . . . . . . . . . .

13、. . . . . . . . . . . . . . . 5-4 5-5 IDLING CURRENT ADJUSTMENT (at 13.5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 5-6 TRANSMIT POWER ADJUSTMENT (at 5.0 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 5-7 TRANSMIT POWER ADJUSTMENT

14、 (at 7.4 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 5-8 TRANSMIT POWER ADJUSTMENT (at 13.5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7 5-9 DEVIATION ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15、. . . . . . . . . . . . . . . . 5-8 5-10 TONE DEVIATION ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 5-11 RECEIVE SENSITIVITY ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 5-12 S-METER A

16、DJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS SECTION 8 BOARD LAYOUTS SECTION 9 BLOCK DIAGRAM SECTION 10 VOLTAGE DIAGRAM LOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . .

17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 MAIN UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3 RF UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5 VCO UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7 1 - 1 SECTION 1. SPECIFICATIONS Version TXRX U.S.A. 144148, 420450*1 0.495823.99

19、0, 849868.990, 894999.990 S.E.A. CHN EXP 137174*2, 400470*2 0.495999.990 KOR 144146, 430440 144146, 430440 AUS 144148, 420450*2 0.495999.990 *1Guaranteed 440450 MHz only, *2Guaranteed 430440 MHz only Mode : FM, FN-N, AM (Rx only), WFM (Rx only), DV No. of memory channels : 1052 (incl. 50 scan edges

20、and 2 call channels) Usable temp. range : 20C to +60C; 4F to +140F Tuning steps : 5, 6.25, 8.33, 9, 10, 12.5, 15, 20, 25, 30, 50, 100, 125 and 200 kHz D General Version TXRX U.S.A. 144148, 420450*1 0.495823.990, 849868.990, 894999.990 S.E.A. CHN EXP 137174*2, 400470*2 0.495999.990 KOR 144146, 430440

21、 144146, 430440 AUS 144148, 420450*2 0.495999.990 *1Guaranteed 440450 MHz only, *2Guaranteed 430440 MHz only All stated specifi cations are subject to change without notice or obligation. Frequency stability : 2.5 ppm (20C to +60C; 4F to +140F) Power supply : 10.016.0 V DC for external DC power, or

22、specifi ed Icoms battery pack Digital transmission speed : 4.8 kbps Voice coding speed : 2.4 kbps Current drain (at 7.4 V DC) : Tx High 144 MHz 1.8 A typical 430/440 MHz 2.1 A typical Tx Mid. 144 MHz 1.2 A typical 430/440 MHz 1.5 A typical Tx Low 144 MHz 0.6 A typical 430/440 MHz 0.7 A typical Tx S-

23、Low 144 MHz 0.4 A typical Rx Rated output 170 mA typical (FM) 215 mA typical (DV) Power save 30 mA typical (FM) (Duty 1:4) 38 mA typical (DV) standby 62 mA typical (FM) 106 mA typical (DV) Antenna connector : SMA (50 ) Dimensions : 58.4(W)103(H)34.2(D) mm; (projections not included) 2516(W)4116(H)11

24、132(D) in Weight (approx.) : 290 g; 10.3 oz (with antenna and BP-217) D Transmitter Modulation system : FM Variable reactance freq. modulation DV (Digital) GMSK reactance freq. modulation Output power (at 7.4 V DC) (Typical) : High 5.0 W, Mid. 2.5 W, Low 0.5 W, S-Low 0.1 W Max. frequency deviation :

25、 5.0 kHz (FM wide: approx.) 2.5 kHz (FM narrow: approx.) Spurious emissions : Less than 60 dBc at High/Mid. Less than 13 dBm at Low/Slow Ext. mic. impedance : 2 k D Receiver Receive system : Except WFM Double-conversion superheterodyne WFM Triple-conversion superheterodyne Intermediate frequencies :

26、 1st 61.65 MHz/59.25 MHz (WFM only) 2nd 450 kHz/13.35 MHz (WFM only) 3rd 1.95 MHz (WFM only) Sensitivity (except spurious points): FM (1 kHz/3.5 kHz Dev.; 12 dB SINAD) 1.62529.995 MHz 0.4 V typ. 30.00075.995 MHz 0.25 V typ. 76.000117.995 MHz 0.25 V typ. 118.000173.995 MHz 0.14 V typ. 174.000259.995

27、MHz 0.32 V typ. 260.000349.995 MHz 0.32 V typ. 350.000469.995 MHz 0.16 V typ. 470.000599.995 MHz 0.32 V typ. 600.000999.990 MHz 0.56 V typ. WFM (1 kHz/52.5 kHz Dev.; 12 dB SINAD) 76.000108.000 MHz 1 V typ. 175.000221.995 MHz 1.8 V typ. 470.000770.000 MHz 2.5 V typ. AM (1 kHz/30% Mod.; 10 dB S/N) 0.4

28、954.995 MHz 1.3 V typ. 5.00029.995 MHz 0.56 V typ. 118.000137.000 MHz 0.5 V typ. 222.000246.995 MHz 0.79 V typ. 247.000329.995 MHz 1 V typ. DV (PN9/GMSK 4.8ksps; BER 1%) VHF (Amateur band only) 0.22 V typ. UHF (Amateur band only) 0.22 V typ. Audio output power : More than 300 mW at 10% distortion (a

29、t 7.4 V DC) with an 8 load Selectivity : FM (Wide), AM More than 50 dB FM (Narrow), DV More than 45 dB WFM More than 300 kHz/3 dB Less than 700 kHz/20 dB Ext. speaker connector : 3-conductor 3.5(d) mm; (18)/8 Spurious and image rejection ratio : VHF More than 60 dB UHF More than 50 dB (Intermediate

30、freq.; More than 60 dB) Squelch Sensitivity (except spurious points): FM (1 kHz/3.5 kHz Dev.) 1.62529.995 MHz 0.4 V typ. 30.00075.995 MHz 0.25 V typ. 76.000117.995 MHz 0.25 V typ. 118.000173.995 MHz 0.14 V typ. 174.000259.995 MHz 0.32 V typ. 260.000349.995 MHz 0.32 V typ. 350.000469.995 MHz 0.16 V t

31、yp. 470.000599.995 MHz 0.32 V typ. 600.000999.990 MHz 0.56 V typ. WFM (1 kHz/52.5 kHz Dev.) 76.000108.000 MHz 1 V typ. 175.000221.995 MHz 1.8 V typ. 470.000770.000 MHz 2.5 V typ. AM (1 kHz/30% Mod.) 0.4954.995 MHz 1.3 V typ. 5.00029.995 MHz 0.56 V typ. 118.000137.000 MHz 0.5 V typ. 222.000246.995 MH

32、z 0.79 V typ. 247.000329.995 MHz 1 V typ. Selectable depending on the operating frequency band. (unit: MHz) (unit: MHz) 2 - 1 SECTION 2. INSIDE VIEWS LOGIC UNIT VCC LINE SWITCH (IC104) EEPROM (IC51) ALC AMP (IC300) DIGITAL/ANALOG MODE SWITCH (IC303) AF FILTER (IC501 ) AF BUFERF (IC504) LINEAR CODEC

33、(IC503) +5 V SWITCHING REGULATOR (IC102) AF MUTE SWITCHES (Q403, 404) IDC (IC302) 3.3V REGULATOR (Q507) MIC GAIN SWITCH (Q303) MIC LINE SWITCH (IC301) 1/2 DIVIDER FOR MODEM CLOCK (IC500) AF POWER AMP (IC400) CPU3V REGULATOR (IC100) LCD DRIVER (IC603) DSP CODEC (IC506) DSP CLOCK AMP (IC505) BUFFER fo

34、r DSP CLOCK (IC505) 2 - 2 MAIN UNIT (TOP VIEW) MAIN UNIT (BOTTOM VIEW) SERIAL/PARALLEL CONVERTER (IC701) AF FILTER (IC501) TONE FILTER (IC150) RX AF LINE SWITCH (IC500) REFERENCE FREQUENCY SIGNAL BUFFER (Q450) SERIAL/PARALLEL CONVERTER (IC702) T5V REGULATOR (Q804) 2ND IF FILTER (WIDE/NARROW) SELECTO

35、R (Q153) IF IC (IC100) 1ST IF FILTER (WFM) (FI2) 1ST IF FILTER (FM/AM/DV) (FI50) CURRENT DETECT (IC800) 2ND IF FILTER (WIDE MODE) (FI200) D/A CONVERTER (IC600) RF AMP (Q700) 2ND IF AMP (WFM) (Q1) 2ND IF MIXER (WFM) (Q2) FM/WFM MODE SWITCH (Q201) DISCRIMINATOR (X100) T5V REGULATOR (Q805) REFERENCE FR

36、EQUENCY OSCILLATOR (X450) 2ND IF FILTER (NARROW MODE) (FI100) DETECT VOLTAGE SELETCOR (BATTERY/DC-IN) (IC1000) AGC VOLTAGE DETECTOR (Q104) IF AMP (Q103) 1 - 1 TX POWER AMPLIFIER (Q100) VCO UNIT RF UNIT R3V LINE SWITCH (Q251, 303, 703) HV LINE SWITCH (Q1000) RF CIRCUITS SHIFT SWITCH (Q252, 302) TX LO

37、 AMPLIFIER (IC100) FLAT CABLE LOGIC unit A B B B B Front panel E D B B B A C Rear panel A A A D D B B B RF UNIT Rear panel C RF UNIT Rear panel MAIN UNIT 3 - 1 1. Removing the rear panel q Unscrew 2 screws A and remove the plate B. w Unscrew 2 screws C and 2 screws D. e Disconnect the flat cable E f

38、rom MAIN UNIT. r Remove the rear panel. 3. Removing the RF UNIT q Unsolder 2 points A. w Unsolder 3 points B and remove the shield plate C. e Unscrew 4 screws D and remove the RF UNIT from the rear panel. 2. Removing the MAIN UNIT q Unsolder 5 points A. w Unscrew 3 screws B. e Remove the MAIN UNIT f

39、rom the rear panel. 4. Removing the LOGIC UNIT 1 Unsolder 2 points A. 2 Unscrew 6 screws B and remove the LOGIC UNIT from the front panel. SECTION 3. DISASSEMBLY INSTRUCTION BE CAREFUL about the fl at cable and connector when separating the CHASSIS UNIT from the FRONT UNIT. 4 - 1 SECTION 4. CIRCUIT

40、DESCRIPTION 4-1 RECEIVER CIRCUITS RF CIRCUITS (RF UNIT) RX signals from the antenna are sorted by its frequency by the filters and gone through RF circuits for each bands. 76 MHz and below The RX signals are passed through two LPFs, ANT SW, band SW and LPF. The RX signals are sorted by its frequency

41、 by band SWs. 0.49529.995 MHz The RX signals are passed through the band SW (D201) and LPF, and applied to tuned RF AMP (Q200). The amplified RX signals are applied to the 1st mixer (IC900) via two band SWs (D203 and D707). 3075.995 MHz The RX signals are passed through the band SW (D250) and tuned

42、BPF, and applied to the RF AMP (Q250). The amplified RX signals are passed through tuned BPF, then applied to the 1st IF mixer (IC900) via two band SWs (D256 and D707). 76117.995 MHz The RX signals are passed through two LPFs, ANT SW, band SW (D300), LPF and another band SW (D301) in sequence, then

43、applied to the RF AMP (Q300) via the tuned BPF. The amplified RX signals are passed through another tuned BPF, then applied to another RF AMP (Q301). The amplified RX signals are applied to the 1st mixer (IC900) via two band SWs (D311 and D707). 118173.995 MHz The RX signals are passed through two L

44、PFs, ANT SW, and band SW (D400), then applied to the RF AMP (Q400). The amplified RX signals are passed through the tuned BPF, and applied to another RF AMP (Q401). The amplified RX signals are passed through tuned BPF, then applied to the 1st IF mixer (IC900) via two band SWs (D405 and D509). 17425

45、9.995 MHz The RX signals are passed through the LPF, HPF, ANT SW, ATT, band SW (D302), HPF and another band SW in sequence, then applied to the RF AMP (Q300) via the tuned BPF. The amplified RX signals are passed through another tuned BPF, then applied to another RF AMP (Q301). The amplified RX sign

46、als are applied to the 1st mixer (IC900) via two band SWs (D311 and D707). 260349.995 MHz and 470599.995 MHz The RX signals are passed through the LPF, HPFANT SW, ATT, BAND SW and tuned BPF in sequence, then applied to the RF AMP (Q500). The amplified RX signals are passed through another 2-pole tun

47、ed BPF, and applied to another RF AMP (Q501). The amplified RX signals are then applied to the 1st mixer (IC900) via two band SWs (D508 and D707). 350469.995 MHz The RX signals are passed through the LPF, HPF, ANT SW, ATT, band SW and HPF in sequence, then applied to the RF AMP (Q600). The amplified

48、 RX signals are passed through the tuned BPF, and applied to the RF AMP (Q601). The amplified RX signals are passed through the BPF, then applied to the 1st mixer (IC900) via two band SWs (D606 and D707). 600999.990 MHz The RX signals are passed through the HPF, ATT and applied to the RF AMP (Q700).

49、 The amplified RX signals are passed through the tuned BPF, and applied to another RF AMP (Q701). The amplified RX signals are applied to the 1st mixer (IC900) via the band SWs (D706 and D707). The RF attenuation which reduces RX signal level to 10 dB is carried out by D5, D9 and D701, by turning these PIN diodes ON using ATT signal. RF AMP ANT SW RF AMP RF AMP LPF BAND SW BPF BAND SW RF SW RF AMP RF SW LPF BAND SW BPF RF AMP HPF BPF HPF BPF BA