IC-E92D_serv.pdf

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1、S-14416XZ-C1 Jan. 2008 VHF/UHF DIGITAL TRANSCEIVER This service manual describes the latest service information for the IC-E92D 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 specifed. This will ruin t

2、he transceiver. 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. To upgrade quality, any electrical or mechanical parts and internal circui

3、ts are subject to change without notice or obligation. MODELVERSION SUPPLIED CHARGER IC-E92DEURBC-167D Be sure to include the following four points when ordering replacement parts: 1. 10-digit Icom parts numbers 2. Component name 3. Equipment model name and unit name 4. Quantity required 1110003491

4、S.IC TA31136FNG IC-E92D MAIN UNIT 5 pieces 8820001210 SCREW 2438 SCREW IC-E92D Top cover 3 pieces Addresses are provided on the inside back cover for your convenience. Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, F

5、rance, Spain, Russia and/or other countries. ORDERING PARTS 1. Make sure the 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 them S-Lowly and smo

6、othly. 4. DO NOT short any circuits or electronic parts. An insulated tuning tool MUST be used for all adjustments. 5. DO NOT 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

7、60 dB attenuator between the transceiver and a Deviation Meter or Spectrum Analyzer when using such test equipment. 8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. REPAIR NOTES INTRODUCTION CAUTION UNIT ABBREVIATIONS: F=FRONT UNIT L=LOGIC U

8、NIT M=MAIN UNIT R=RF UNIT V=VCO UNIT CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY INSTRUCTION SECTION 4 CIRCUIT DESCRIPITON 4-1 RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-2 T

9、RANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 4-3 FREQUENCY SYNTHESIZER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 4-4 CPU PORT ALLOCATION. . . . . . . . . . . . . . .

10、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 4-5 VOLTAGE DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREPARATION . . . . . . . . . . . . . . . . . .

11、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5-2 TRANSMIT AMPLIFIER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5-3 FREQUENCY ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12、. . . . . . . . . . . . . . . . . . 5-10 5-4 DEVIATION ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 5-3 RECEIVE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13、5-14 5-3 FREQUENCY ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS SECTION 8 BOARD LAYOUTS SECTION 9 BLOCK DIAGRAM SECTION 10 VOLTAGE DIAGRAM 1 - 1 SECTION 1 SPECIFICATIONS Selectable d

14、epending on the operating frequency band. P GENERAL Frequency coverage : (unit: MHz) Version A bandB band EUR Tx: 144146, 430440 Rx: 0.495999.990*1, *2 Tx: 144146, 430440 Rx: 118174*2, 350470*1 *1Guaranteed 430440 MHz only, *2Guaranteed 144146 MHz only, Mode : FM, FN-N, AM (Rx only), WFM (Rx only),

15、DV No. of memory channels : 1304 (incl. 100 scan edges and 4 call channels) Usable temp. range : 20C to +60C Tuning steps : 5, 6.25, 8.33, 9, 10, 12.5, 15, 20, 25, 30, 50, 100, 125 and 200 kHz Frequency stability : 2.5 ppm (20C to +60C) Power supply : 10.016.0 V DC for external DC power, or specifi

16、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-Low 0.4

17、A typical Rx Rated output 150 mA typical (single watch; FM) 180 mA typical (dualwatch; FM/FM) 200 mA typical (single watch; DV) 220 mA typical (dualwatch; FM/DV) Rx Power save 38 mA typical (single watch; FM) (Duty 1:4) 43 mA typical (dualwatch; FM/FM) 47 mA typical (single watch; DV) 50 mA typical

18、(dualwatch; FM/DV) standby 65 mA typical (single watch; FM) 90 mA typical (dualwatch; FM/FM) 110 mA typical (single watch; DV) 130 mA typical (dualwatch; FM/DV) Antenna connector : SMA (50 ) Dimensions : 59(W)112(H)34.2(D) mm; (projections not included) Weight (approx.) : 325 g (with antenna and BP-

19、256) P 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 : 5.0 kHz (FM wide: approx.) 2.5 kHz (FM narrow: approx.) Spurious

20、 emissions : Less than 60 dBc at High/Mid. Less than 13 dBm at Low/Slow Ext. mic. impedance : 2 k P RECEIVER Receive system : Except WFM Double-conversion superheterodyne WFM Triple-conversion superheterodyne Intermediate frequencies : 1st A band 61.65 MHz/59.25 MHz (WFM only) B band 46.35 MHz 2nd 4

21、50 kHz/13.35 MHz (WFM only) 3rd 1.95 MHz (WFM only) Sensitivity (except spurious points): AM (1 kHz/30% Mod.; 10 dB S/N) 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 MHz 0.79 V typ. 247.000329.995 MHz 1 V typ. FM (1 kHz/3.5 kHz Dev.; 12 dB SINAD)

22、 VHF (Amateur band only) 0.14 V typ. UHF (Amateur band only) 0.16 V typ. 1.62529.995 MHz 0.4 V typ. 30.000117.995 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 typ. 470.000599.995 MHz 0.32 V typ. 600.000999.990

23、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. DV (digital/PN9 4.8 kbps; BER 1%) VHF (Amateur band only) 0.22 V typ. UHF (Amateur band only) 0.22 V typ. Audio output power : More than 200 mW at 10% distort

24、ion (at 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 (Interme

25、diate freq.; More than 60 dB) Squelch Sensitivity (except spurious points): 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 MHz 0.79 V typ. 247.000329.995 MHz 1 V typ. FM (1 kHz/3.5 kHz Dev.) 1.62529.995 MHz 0.4 V typ. 30.00075.9

26、95 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 typ. 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. 175.000221.9

27、95 MHz 1.8 V typ. 470.000770.000 MHz 2.5 V typ. 2 - 1 SECTION 2 INSIDE VIEWS ANALOG SWITCH (IC50: CD4066) LOGIC UNIT RS-232 DRIVER (IC52: MAX3221) EEPROM (IC51: 24LC512) CPU3V REGULATOR (IC100: R1150H022) AF SWITCH (IC301: TC7W53) MODEM (IC501: CMX589) AF FILTER/IDC (IC302: LMV324) AF BUFFER (IC504:

28、 NJM2115) LINER CODEC (IC503: AD73311) DC-DC CONVERTER (IC101: XC6371A551PR) CPU CLOCK (X1: CR-864) AF PWR AMP (IC400: NJM2070) DATA I/O INVERTER (IC33: TC7W04FU) SHIFT REGISTER (IC53: CD4094) AF PWR AMP REGULATOR (Q400: 2SB1201) DC SWITCH (Q100: HAT1024R) DSP CODEC (IC506: AMBE-2020) CPU (IC1: HD64

29、F2239) SWITCHING REGULATOR (IC102: XC9201C05) 2 - 2 TONE FILTER (IC150: LM2904) IF IC (A BAND) (IC100: TA31136FNG) IF IC (A BAND) (IC200: TA31136FNG) (TOP VIEW) RF UNIT (B-BAND) DISCRIMINATOR (X100: JTBM450) RX VCOs (B BAND) (TOP VIEW) MAIN UNIT (BOTTOM VIEW) (BOTTOM VIEW) 2ND IF FILTER (A BAND) (FI

30、100: LTWC450E1) (B BAND) DISCRIMINATOR (X200: JTBM450) D/A CONVERTER (IC950: M62352) D/A CONVERTER (IC951: M62352) APC CONTROLLER (IC150: NJM3404) TONE SELECTOR (IC703: CD4066) (B BAND) 2ND IF FILTER (FI200: LTWC450E1) (B BAND) 1st IF FILTER (FI50: FL-335) D/A CONVERTER (IC600: M62364FP) SHIFT REGIS

31、TER (IC702: CD4094) SHIFT REGISTER (IC701: CD4094) (B BAND) 2ND IF FILTER (FI201: LTWC450E1) AF FILTER (IC502: NJM2904) AF FILTER (IC501: NJM2904) VCO UNIT (Under the cover) TX POWER AMP (Q100: 2SK3476) HEAT SINK for TX POWER AMP (MP100: 2888 PA HEATSINK) TX DRIVE AMP (Q101: 2SK3475) DC SWITCH (Q100

32、0: HAT1026) 3 - 1 SECTION 3 DISASSEMBLY INSTRUCTION 1. Removing the front panel q Unscrew 6 screws from the CHASSIS. w Disconnect the flat cable between MAIN UNIT and FRONT assembly, and remove the FRONT assembly from the CHASSIS. 3. Removing outer parts q Remove the dial knobs. w Remove the rubber

33、cap, and unscrew the ANT nut. e Unscrew the side screws, and remove the side panel. 2. Removing the FRONT UNIT q Unscrew 8 screws from the FRONT UNIT. w Unsolder 2 points to remove the speaker leads, then remove the FRONT UNIT from the front panel. Flat cable FRONT assy CHASSIS Unsolder 2 points Spe

34、aker leads FRONT UNIT Front panel ANT nut Rubber cap Dial knobs Side panel Side screws (Contiued to next page) 3 - 2 4. Removing MAIN UNIT q Unscrew 3 screws from the MAIN UNIT. w Unsolder 6 points at the control dial, and remove the MAIN UNIT. MAIN UNIT Unsolder 6 points Control dial Unsolder 4 poi

35、nts RF UNIT Unsolder 1 point 5. Removing RF UNIT q Unsolder 4 points at the contact pins. w Unsolder 1 point at the bottom of ANT connector. e Unscrew 7 screws from the RF UNIT, and remove the RF UNIT from the CHASSIS. RF UNIT Chassis 4 - 1 SECTION 4 CIRCUIT DESCRIPTION 118173.995 MHz The RX signals

36、 are passed through two LPFs, ANT SW, ATT and band SW, 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 the band SW.

37、174259.995 MHz The RX signals are passed through the LPF, HPF, ANT SW, ATT, band SW, HPF and another band SW insequence, 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 signals

38、 are applied to the 1st mixer (IC900) via the band SW. 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 2pole tuned BPF, and applied t

39、o another RF AMP (Q501). The amplified RX signals are then applied to the 1st mixer (IC900) via the band SW. 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 RX signals are passed through the tun

40、ed 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 the band SW. 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 ea

41、ch bands. And this transceiver also has two RX lines for two independent operating bands; A BAND and B BAND. 76 MHz and below The RX signals are passed through two LPFs, ANT SW, ATT, band SW and LPF. The RX signals are sorted by its frequency by band SWs. 0.49529.995 MHz The RX signals are passed th

42、rough 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 the band SW (D203). 3075.995 MHz The RX signals are passed through the band SW (D250) and tuned BPF, and applied to the RF AMP (Q250). The amplified RX signals are

43、passed through tuned BPF, then applied to the 1st IF mixer (IC900) via the band SW (D256). 76117.995 MHz The RX signals are passed through two LPFs, ANT SW, ATT, band SW, LPF and another band SW in sequence, then applied to the RF AMP (Q300) via the tuned BPF. The amplified RX signals are passed thr

44、ough another tuned BPF, then applied to another RF AMP (Q301). The amplified RX signals are applied to the 1st mixer (IC900) via the band SW (D311). RF CIRCUITS RF AMP ANT SW RF AMP RF AMP LPF BAND SW BPF ATT BAND SW RF SW RF AMP BAND SW RF SW LPF BAND SW BPF BPF RF AMP HPF RF SW BPF HPF BPF BAND SW

45、 ATT RF AMP LPF BAND SW RF AMP BPF RF AMP BPF LPF BPF RF AMP RF SW BAND SW ATT LPF BPF BAND SW RF AMP BPF BPF BAND SW BPF RF AMP ANT SW RF AMP BAND SW BAND SW BAND SW BAND SW BPF BAND SW BAND SW BPF BAND SW BPF RF AMP RF AMP HPF BPF D9 Q1,2,150 D1,3,4,10,151,160 Q1,3,D6-8 D304,305 Q601 D604,605D606

46、D400 D702 Q401 Q701 D402,403D405 D200 D250D254,255 D508 D253 D705 D603 D311 D655 Q400 Q700 Q450 D454 D201 Q500 D252 D600 D300 D650,651 Q300 Q651 D653,654 D302 D700 D401 D703,704 D404 D706 D451,452 D500 Q200 D503 D251 D256 Q600 D301 D306-309 D652 Q301 D303 D701 D450 D453 D5 D501,502 D203 D504,507 Q25

47、0 Q501 D202 D601,602 To 1st mixer (IC50) for B BAND To 1st mixer (IC900) for A BAND D310 A:0.530MHz A:3076MHz Tx:430.000450.000MHz Tx:144.000148.000MHz A:174260MHz A:76118MHz A:118174MHz B:118174MHz A:470600MHz A:260350MHz A:350470MHz A:350470MHz B:350470MHz A:6001000MHz HPF L1-3 C1-6L4,C7-9 L200,20

48、1 C201-204 L300,301 C301-305 L600,608 C600-602,630,631 L8,9 C18-20 L302,303 C306-310 L202,203 C205-9 L5-7 C10-14 4 - 2 600999.990 MHz The RX signals are passed through the HPF, band SW, ATT and tuned BPF in sequence, then applied to the RF AMP (Q700). The amplified RX signals are passed through the

49、BPF, and applied to another RF AMP (Q701). The amplified RX signals are applied to the 1st mixer (IC900) via the band SW. 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. 1ST IF CIRCUIT (MAIN UNIT) The RX signals from the RF circuits are applied to the 1st mixer (RF: IC900) to be converted into the 1st IF signal, by being mixed with the 1st Local Oscillator (LO) si