Icom IC-E91 Service Manual Download

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SERVICE

MANUAL

S-14231HZ-C1
May. 2006

VHF/UHF FM TRANSCEIVER

Summary of Contents for IC-E91

Page 1: ...SERVICE MANUAL S 14231HZ C1 May 2006 VHF UHF FM TRANSCEIVER...

Page 2: ...for a long time when the transceiver is defective 6 DO NOT transmit power into a signal generator or a sweep generator 7 ALWAYS connect a 30 dB to 40 dB attenuator between the transceiver and a deviat...

Page 3: ...OCATION 5 5 SECTION 6 ADJUSTMENT PROCEDURES 6 1 PREPARATION 6 1 6 2 FREQUENCY AND TRANSMIT ADJUSTMENT 6 5 SECTION 7 PARTS LIST SECTION 8 MECHANICAL PARTS AND DISASSEMBLY SECTION 9 SEMICONDUCTOR INFORM...

Page 4: ...rodyne system WFM Triple conversion superheterodyne system Intermediate frequencies 1st A band B band 61 65 59 25 MHz WFM 46 35 MHz 2nd 450 kHz 13 35 MHz WFM 3rd 1 95 MHz WFM only Sensitivity except s...

Page 5: ...TA31136FNG B_BAND FM IF IC IC200 TA31136FNG A_BAND 2nd IF filter FI2 SFECV13 35MAS B_BAND 1st IF filter FI50 FL 335 ALC amplifier IC300 AN6123MS AF power amplifier IC550 NJM2070M Reset IC IC100 R1150H...

Page 6: ...and 2 screws B 2 Unsolder 8 points C and remove the shied cover D 3 Remove the MAIN unit from the rear panel in the direction of the arrow D E B A C Rear panel CODEC unit UT 121 J702 LOGIC unit A B B...

Page 7: ...Unscrew 2 screws to remove the unit cover e Insert the tweezers into the notches of the UT 121 and remove it as shown below r Screw 2 screws to assemble the unit cover 2 screws Unit cover RECOMMENDATI...

Page 8: ...1st mixer IC900 pin 1 via the band switches D311 D707 SECTION 5 CIRCUIT DESCRIPTION 5 1 LPF LPF D255 Tuned RF amplifier D707 D256 D203 Q250 Q200 to the A_BAND 1st mixer IC900 pin 1 0 495 30 MHz D252 R...

Page 9: ...00 D702 Q701 D706 to the A_BAND 1st mixer IC900 pin 1 D700 While receiving 260 999 MHz band signals the 1st LO signals are generated at UHF BAND VCO VCO UNIT Q101 D101 D104 If the receiving frequency...

Page 10: ...and converted into the 1 95 MHz 3rd IF signal by being mixed with the 15 3 MHz 2nd LO signal from the reference frequency oscillator X450 The converted IF signal is output from pin 3 and applied to th...

Page 11: ...lter MAIN UNIT Q550 Q552 AM mode The demodulated AF signals from the AM demodulator circuit MAIN UNIT Q104 Q105 are applied to the AF switch MAIN UNIT D105 and then passed through the AF filter MAIN U...

Page 12: ...tor MAIN UNIT IC703 pins 3 4 10 11 The CPU decodes the CTCSS DTCS signal and outputs AFON signal from pin 97 according to the set CTCSS DTCS signal to toggle the AF power regulator LOGIC UNIT Q105 Q10...

Page 13: ...r 430 MHz band and 1st LO signals for receiving 260 999 MHz While receiving the VCO oscillates the 1st LO frequency and the output signals are amplified by the buffer amplifiers VCO UNIT Q200 Q201 If...

Page 14: ...IC1 PLL IC control signals PLL IC IC800 VCO BOARD RF UNIT PLLDATA APLLSTB Reference frequency signal 15 3 MHz from the TCXO MAIN UNIT X450 2 4 Q51 D51 D54 D55 VHF BAND VCO Q1 D1 D3 D5 D6 BC BAND VCO...

Page 15: ...N UNIT R404 R406 C410 C412 C414 The lock voltage from the loop filter is applied to each VCO If the oscillated signal drifts its phase changes from that of the reference frequency causing a lock volta...

Page 16: ...e switch IC301 High While the transmitting is muted 43 CTCOUT Outputs CTCSS DTCS signals 5 6 CPU PORT ALLOCATION Line Description HV The same voltage as the connected external power supply thrugh the...

Page 17: ...232C driver IC52 85 AMBECLK Outputs AME clock signal to the DSP IC UT 121 IC101 86 AMBERES Outputs AME reset signal to the DSP IC UT 121 IC101 87 IOSTB3 Outputs strobe signal to the D A converter MAIN...

Page 18: ...Output level 1 500 mV 47 to 7 dBm External speaker Input impedance 8 Capacity More than 50 mW Attenuator Power attenuation 20 or 30 dB Capacity More than 7 W 6 1 PREPARATION When adjusting IC E91 thes...

Page 19: ...S FOR ADJUSTMENT MODE Selects the next adjustment item Selects the previous adjustment item Adjusts the value for the item manually Stores the set value Adjusts the value for the item automatically DI...

Page 20: ...Po 2Q 1 Transmitting 0 1 W UHF 2 Transmitting TX POWER IDLING 7 4V Id F VHF 1 Power supply voltage 7 4 V Adjustment value of 2Q 00 Transmitting HIGH 5 0 W LOW 40 100 mW UHF 2 Transmitting NOTE Take no...

Page 21: ...DIGITAL DEVIATION DVV 88 VHF 1 Connect a modulation analyzer to the antenna connector through an attenuator and set as LPF 20 kHz HPF OFF De emphasis OFF Detector P P 2 Transmitting 1 2 kHz UHF 2 Tra...

Page 22: ...PF B_BAND TrB 6T Connect an SSG to the ANT connector and set as Dev 3 5 kHz AF 1 kHz 118 470 MHz bands 1 Set the SSG as Frequency Specified frequencies Level 3 dB 110 dBm Receiving FM S METER A_BAND S...

Page 23: ...ceiving 107 9 MHz band 5 Set the SSG as Frequency Specified frequency Level 1 dB 108 dBm Receiving 145 1 MHz band 6 Set the SSG as Frequency Specified frequency Level 0 dB 107 dBm Receiving 220 MHz ba...

Page 24: ...VHF 145 0 UHF 435 0 DVR VHF 145 0 UHF 435 0 TONE DEVIATION DTMF VHF 145 0 UHF 435 0 EUR VHF 145 0 UHF 435 0 CT VHF 145 0 UHF 435 0 DTMF VHF 145 0 UHF 435 0 ADJUSTMENT ITEM FREQUENCY MHz RXBPF A_BAND...

Page 25: ...87 6 R54 7030011000 S RES RR0510P 392 D 3 9 k B 41 2 76 9 R55 7030005240 S RES ERJ2GEJ 473 X 47 k B 41 4 75 7 R56 7030005120 S RES ERJ2GEJ 102 X 1 k B 40 77 5 R57 7030005240 S RES ERJ2GEJ 473 X 47 k B...

Page 26: ...C101 4030011600 S CER C1608 JB 1E 104K T B 48 8 62 2 C102 4030011600 S CER C1608 JB 1E 104K T B 42 3 60 C103 4550006250 S TAN TEESVA 1A 106M8R B 50 5 61 1 LOGIC UNIT REF ORDER DESCRIPTION M H V NO NO...

Page 27: ...SC4215 O TE85R B 47 2 37 9 Q101 1590003390 S TR UNR9215J TX T 33 9 39 7 Q102 1590002380 S TR XP1115 TX T 36 5 40 3 Q103 1590001190 S TR XP6501 TX AB B 27 8 34 1 Q104 1590001190 S TR XP6501 TX AB B 25...

Page 28: ...J2GEJ 154 X 150 k T 18 2 19 6 R221 7030005240 S RES ERJ2GEJ 473 X 47 k T 15 3 23 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION R222 7030004980 S RES ERJ2GEJ 101 X 100 T 19 2 18 R223 7030005230...

Page 29: ...C155 4550000460 S TAN TEESVA 1C 105M8R B 11 8 32 1 C156 4030016930 S CER ECJ0EB1A104K B 15 8 26 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION C157 4030016930 S CER ECJ0EB1A104K B 13 9 29 2 C15...

Page 30: ...02K T 19 7 8 5 C653 4030017460 S CER ECJ0EB1E102K T 20 3 7 6 C654 4550007320 S TAN F930J226MAABMA T 23 1 11 7 C655 4030017440 S CER ECJ0EC1H221J T 26 6 12 C700 4030017460 S CER ECJ0EB1E102K T 4 6 38 C...

Page 31: ...T 2 7 24 5 RF UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION D400 1790001621 S DIO 1SV308 TPL3 B 21 4 44 9 D401 1750000771 S VCP HVC376BTRF E B 17 4 36 D402 1750000771 S VCP HVC376BTRF E B 16 9 27 1...

Page 32: ...EF ORDER DESCRIPTION M H V NO NO LOCATION R163 7030005220 S RES ERJ2GEJ 223 X 22 k B 48 3 26 6 R165 7510001770 S TMR NTCG10 4LH 473JT T 27 6 42 R166 7030005220 S RES ERJ2GEJ 223 X 22 k B 48 4 21 7 R16...

Page 33: ...0 S RES ERJ2GEJ 180 X 18 T 23 3 19 7 R850 7030004970 S RES ERJ2GEJ 470 X 47 T 13 7 11 1 R851 7030005070 S RES ERJ2GEJ 683 X 68 k T 12 8 10 8 R852 7030007570 S RES ERJ2GEJ 122 X 1 2 k T 14 5 12 3 R853...

Page 34: ...C334 4030017460 S CER ECJ0EB1E102K T 2 3 6 4 C335 4030017460 S CER ECJ0EB1E102K T 29 5 38 4 C336 4030016790 S CER ECJ0EB1C103K B 22 5 43 8 RF UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION C337 40300...

Page 35: ...0007680 S TAN TEESVP 0J 226M8R T 15 7 23 2 C818 4030017430 S CER ECJ0EC1H101J T 20 3 19 3 C819 4030017460 S CER ECJ0EB1E102K T 23 9 16 3 C820 4550006910 S TAN TEESVP 1C 334M8R T 9 5 21 8 C821 45500077...

Page 36: ...J2GEJ 221 X 220 T 10 2 5 6 R107 7030005090 S RES ERJ2GEJ 104 X 100 k T 18 2 7 4 R108 7030007320 S RES ERJ2GEJ 225 X 2 2 M T 16 6 7 4 R109 7030008410 S RES ERJ2GEJ 392 X 3 9 k T 16 6 8 3 R110 703000734...

Page 37: ...8 R353 7030004980 S RES ERJ2GEJ 101 X 100 B 9 2 3 3 R354 7030005240 S RES ERJ2GEJ 473 X 47 k T 11 3 7 1 C1 4550007680 S TAN TEESVP 0J 226M8R B 28 7 10 C2 4550007600 S TAN F920J106MPABMA B 30 6 10 C3...

Page 38: ...7 8930069240 Insulation sheet LI 1 MP28 8860001410 2888 ANT rug 1 MP30 8930070220 Thermally sheet BG 1 MP31 8510017870 2888 PA cover 1 ORDER NO REF NO DESCRIPTION QTY RF UNIT J1000 6450000870 Connecto...

Page 39: ...C MP2 V MP1 V MP21 C MP17 C MP15 C MP4 C MP2 C MP3 C MP26 C MP5 C MP7 C MP8 C MP30 C MP18 C MP1 C MP16 C J1000 R MP11 C MP13 C MP14 C MP24 C MP24 C MP23 C MP23 C MP18 C MP18 C MP10 C MP24 C MP24 C MP...

Page 40: ...l AEG Symbol BAR Symbol B1201 Symbol AR Symbol BS Symbol QO Symbol R25 Symbol 24 Symbol 88 Symbol VH Symbol Y Symbol UC F Symbol XY Symbol YB Symbol 1026 Symbol K2 Symbol 6E Symbol 8A Symbol 8E Symbol...

Page 41: ...20 V45 V50 V55 V40 V65 V70 V75 V60 V80 V90 V85 H5 H10 H15 H20 H0 V5 V10 V15 V0 V20 H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H0 V5 V10 V15 V0 V25 V30 V35 V20 V45 V50 V40 30 to MAIN unit J703 1 16 15 J100...

Page 42: ...ND 2 1 16 15 to RF unit J800 J1 VVCO3 VLV GND MOD GND UVCO3 ULV BCLV GND VSHIFT BCVCO3 GND PLLOUT GND LOOUT H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H0 V5 V10 V15 V0 V25 V30 V35 V20 V45 V50 V40 16 to RF...

Page 43: ...364 Q1 2SC4081 Q2 2SC5006 FI2 SFECV13 35MAS FI50 FL 335 Q100 2SC4215 D100 MA2S728 D102 1SS364 D103 1SS364 FI100 CFWM450E IC100 TA31136 IC500A CD4066 Q103 XP6501 Q104 XP6501 Q104 XP6501 IC500B CD4066 Q...

Page 44: ...SN74AHC2G53HDCT3 IC301 1 COM 2 INH 3 GND 4 GND 5 A 6 Y1 7 Y0 8 VCC 10P C14 15K R324 CP405 330 R201 CP402 1 C353 180 R211 SML A12MT DS210 1 C333 0 001 C350 1k R602 XP1501 Q101 1 2 3 4 5 10 C306 0 001...

Page 45: ...8K R301 0 0033 C150 0 0033 C506 27P C247 10 C214 150K R123 4 7K R225 4 7K R305 0 47U L452 2 2K R7 0 001 C416 0 1 C137 12K R118 470 R459 82P C207 1 C550 UNR9115J Q205 2 2K R19 0 1 C237 47P C757 47P C75...

Page 46: ...5K R102 0 001 C671 22K R253 100P C813 TC75S51FU IC955 1 2 3 4 5 100P C818 3SK318 Q600 HAT1026R Q1000 5 D 6 D 7 D 8 D 1 S 2 S 3 S 4 G 47K R613 10K R511 3 7N L101 1P C623 1 C39 2 7N L700 1 5K R106 0 001...

Page 47: ...20 R6 1k R50 0 001 C54 0 001 C55 8 2K R54 27P C59 2SC5195 Q51 1k R100 HVC375B D104 HVC375B D101 0 001 C104 0 001 C105 LQW18AN5N6C00 L102 47K R1 2 2K R10 2 2K R2 L3 0 15 120P C3 82P C9 0 R9 1SV325 D6 2...

Page 48: ...0 NC 1 C301 EP352 CR 821 X200 1 GND 2 GND 3 OUT 4 VCC 100K R304 0 1 C201 0 1 C300 0 001 C50 0 1 C112 33K R306 0 1 C102 0 R202 EP350 EP200 10 C2 47K R352 47K R205 EP202 0 001 C211 4 7K R50 CP201 10K R2...

Page 49: ...e 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 1 604 952 4266 Fax 1 604 952 0090 URL http www icomcanada com E mail info icomcanada com A B N 88 006 092 575 Unit 1 103 Garden Road Clayton VIC 31...

Page 50: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14231HZ C1 2006 Icom Inc...

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