Icom IC-E7 Service Manual Download | Manualshive

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V/M

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SECTION 9

BOARD LAYOUTS

9 - 1

9-1 MAIN UNIT

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16V

DC INPUT

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9-2 PA BOARD

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9-3 VCO BOARD

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9-4 BC-164

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Summary of Contents for IC-E7

Page 1: ...SERVICE MANUAL VHF UHF DUALBAND FM TRANSCEIVER S 14217HZ C1 Nov 2005 ...

Page 2: ...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 deviation meter or spectrum analyzer when using such test equipment 8 READ the instructions of test equipment thoroughly before connecting equipment to the transceiver To upgrade quality all electrical or mecha...

Page 3: ...RT ALLOCATIONS 4 4 4 5 POWER SUPPLY CIRCUITS 4 5 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 FREQENCY AND TRANSMIT ADJUSTMENT 5 4 5 3 RECEIVE ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMICONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 MAIN UNIT 9 1 9 2 PA BOARD 9 1 9 3 VCO BOARD 9 1 SECTION 10 BLOCK DIAGRAM SECTION 11 CIRCUIT DIAGRAM SE...

Page 4: ...NSMITTER Output power VHF UHF 1 5 W High 0 1 W Low aprrox 1 0 W High 0 1 W Low aprrox Modulation system Variable reactance frequency modulation Maximum deviation 5 0 kHz Spurious emissions Less than 60 dB TX High Less than 50 dB TX Low RECEIVER Receiving system Double conversion superheterodyne system Intermediate frequencies FM AM 1st 46 35 MHz 2nd 450 kHz WFM 1st 14 85 MHz 2nd 450 kHz Sensitivit...

Page 5: ...R1111N321B PLL IC PLL IC IC18 ADF4110BCPZ IC18 ADF4110BCPZ VCO board VCO board AF volume AF volume IC7 SM6451B IC7 SM6451B AF amplifier AF amplifier IC9 NJM2070M IC9 NJM2070M IF IC IF IC IC15 TA31136FNG IC15 TA31136FNG 1st mixer 1st mixer IC16 IC16 µPC2757TB PC2757TB Antenna switching circuit 3V regulator IC10 R1111N321B PLL IC IC18 ADF4110BCPZ VCO board Located under the VCO board AF volume IC7 S...

Page 6: ...it and PA board 1 Unscrew 2 screws A then remove the LCD panel B 2 Unscrew 5 screws C and dial nut D 3 Unsolder 2 points E 5 Incline the chassis as figure below and disconnect the speaker cable E 6 Remove the chassis from the front panel Chassis A B C D Chassis Front panel E MAIN unit B C E C C D A C 4 Release the projection F and remove the MAIN unit 5 Unsolder 11 points G and remove the PA board...

Page 7: ...ng circuit D34 D37 and the BPF D55 L36 L106 C304 C522 C523 The amplified signals are then applied to the 1st mixer IC16 pin 1 via the BPF D26 D32 L13 L25 C204 C215 C222 C236 C244 C520 C521 and band switch D22 300 500 MHz to the 1st mixer IC16 pin 1 D55 D41 D45 D26 D32 D22 Q43 LPF BPF BPF HPF LPF from the antenna RF amp D34 D37 ANT SW While receiving 500 999 MHz The 500 999 MHz band signals are pas...

Page 8: ...rom the demodulator circuits are amplified and filtered in AF amplifier circuits FM WFM mode The demodulated AF signals from the FM IF IC IC15 pin 9 are passed through the AF switch IC14 pins 1 2 and AF filter circuit Q10 D5 The filtered AF signals are applied to the AF amplifier Q12 AM mode The demodulated AF signals from the AM demodulator circuit Q19 Q20 are passed through the AF filter bypass ...

Page 9: ...RCUIT VCO BOARD The modulation circuit modulates the VCO oscillating signal with the AF signals from the microphone and the tone signals from the CPU MICROPHONE SIGNALS The level adjusted MIC signals from the modulation volume Q34 are applied to the D5 in transmitting on 430 MHz band or D6 in transmitting on144 MHz band to modulate the VCO oscillating signal by changing the reactance of D5 D6 The ...

Page 10: ...put signals are amplified by the buffer amplifiers Q14 Q19 If the receiving frequency is 500 MHz and below the buffer amplified signals are passed through the doubler switches D13 D17 then applied to the 1st mixer IC16 pin 3 via TX RX switch MAIN UNIT D56 If the receiving frequency is 500 MHz and above the buffer amplified signals are applied to the doubler circuit Q18 D14 D15 via doubler switch D...

Page 11: ...F RF circuit control signal to the band selector Q36 High While receiving on the VHF band 76 300 MHz 52 PCON Outputs 3V line control signal to the 3V regulator IC10 High While the transceiver s power is ON 53 3SC Outputs 3S line control signal to the 3S regulator Q3 Q4 54 TXC Outputs transmit circuits control signal to T3 regulator circuit Q24 Q27 High While transmitting 55 BEEP While receiving ou...

Page 12: ...O BOARD etc 3V Common 3 V converted from VCCline at the 3V regulator IC10 Q1 The converted voltage is applied to the R3v regulator Q6 10 V DC DC up converter Q7 Q61 Q62 D3 X4 PLL IC IC15 D A converter IC13 etc R3V Rceive 3 V controlled by R3V regulator Q6 using R3C signal from the CPU IC4 pin 44 The voltage is applied to the FM IF IC IC15 1st mixer IC16 1st IF amplifier Q9 RF circuits etc TX3 Tran...

Page 13: ...1 2 1 Standard signal generator SSG Frequency range 0 1 1300 MHz Output level 0 1 µV to 32 mV 127 to 17 dBm Frequency counter Frequency range 0 1 500 MHz Frequency accuracy 1 ppm or better Sensitivity 100 mV or better Oscilloscope Frequency range DC 20 MHz Measuring range 0 01 20 V FM deviation meter Frequency range 30 500 MHz Measuring range 0 to 10 kHz AC millivoltmeter Measuring range 10 mV to ...

Page 14: ...aly shows the ad justment item frequency etc as below DJUSTMENT ITEM DJUSTMENT FREQUENCY QUITING ADJUSTMENT MODE Turn the power OFF KEY ASSIGNMENTS FOR ADJUSTMENT MODE Selects the next adjustment item Selects the previous adjustment item DIAL Adjusts the value for the item manually Adjusts the value for the item automatically Stores the set value NOTE The set value storing is inhibited during tran...

Page 15: ...d PL6 6 Transmitting DEVIATION VHF Low band dE1 1 Connect an audio generator to the MIC SP jack through the JIG cable see the page 5 1 and set as Frequency 1 0 kHz Level 90 mVrms 8 dBm 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 4 2 kHz VHF Mid band dE2 2 Transmitting VHF High band dE3 3 Tran...

Page 16: ...ency Specified frequency Receiving t12 4 Set the SSG as Frequency Specified frequency Receiving t22 5 Set the SSG as Frequency Specified frequency Receiving t32 6 Set the SSG as Frequency Specified frequency Receiving t13 7 Set the SSG as Frequency Specified frequency Receiving t23 8 Set the SSG as Frequency Specified frequency Receiving t33 9 Set the SSG as Frequency Specified frequency Receiving...

Page 17: ... 3 Set the SSG as Frequency Specified frequency Receiving S4 4 Set the SSG as Frequency Specified frequency Receiving S5L 5 Set the SSG as Frequency Specified frequency Receiving S5H 6 Set the SSG as Frequency Specified frequency Receiving S6 7 Set the SSG as Frequency Specified frequency Level 5 dBµ 102 dBm Receiving WFM S METER S2 1 Set the SSG as Frequency Specified frequency Level 1 dBµ 106 dB...

Page 18: ...790001250 S DIO MA2S111 TX B 29 2 30 3 D14 1750001070 S DIO DAN235ETL B 30 3 33 8 D16 1790001621 S DIO 1SV308 B 31 2 47 8 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION D17 1750001070 S DIO DAN235ETL B 37 2 41 9 D18 1750001070 S DIO DAN235ETL B 16 1 22 3 D21 1790001621 S DIO 1SV308 B 22 40 D22 1790001621 S DIO 1SV308 B 17 34 6 D23 1790001621 S DIO 1SV308 B 30 1 45 5 D24 1750000940 S DIO ISS4...

Page 19: ... 2 4 38 9 R96 7030005240 S RES ERJ2GEJ 473 X 47 kΩ T 14 7 59 2 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION R97 7030005050 S RES ERJ2GEJ 103 X 10 kΩ T 14 6 57 7 R101 7030005120 S RES ERJ2GEJ 102 X 1 kΩ B 24 8 52 7 R104 7030005030 S RES ERJ2GEJ 152 X 1 5 kΩ T 37 2 17 R105 7030004980 S RES ERJ2GEJ X 100 Ω T 38 2 11 2 R106 7030010040 S RES ERJ2GE JPW EUR ITR FRA only T 39 7 57 8 R107 70300100...

Page 20: ...82 X 6 8 kΩ T 19 4 2 3 R330 7030005120 S RES ERJ2GEJ 102 X 1 kΩ T 19 5 5 3 R331 7030005220 S RES ERJ2GEJ 223 X 22 kΩ T 19 1 3 5 R337 7030010040 S RES ERJ2GE JPW T 17 5 6 3 R351 7410001130 S ARY EXB28V102JX T 32 8 43 1 R352 7410001130 S ARY EXB28V102JX T 21 6 42 9 R354 7410001130 S ARY EXB28V102JX T 10 6 49 2 R355 7410001130 S ARY EXB28V102JX T 35 1 44 6 R356 7030010040 S RES ERJ2GE JPW T 34 1 1 5 ...

Page 21: ...8 8 41 7 C182 4030016790 S CER ECJ0EB1C103K B 36 3 43 9 C183 4030016930 S CER ECJ0EB1A104K B 24 3 24 3 C184 4030017460 S CER ECJ0EB1E102K B 26 26 9 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION C186 4030016790 S CER ECJ0EB1C103K B 35 1 43 5 C187 4030017380 S CER ECJ0EC1H050B B 35 9 40 5 C189 4030017460 S CER ECJ0EB1E102K B 23 3 38 5 C190 4550007600 S TAN F920J106MPABMA T 13 9 13 8 C191 4030...

Page 22: ... 3 50 C545 4030017460 S CER ECJ0EB1E102K T 26 34 6 C546 4030017460 S CER ECJ0EB1E102K T 18 2 61 C547 4030017430 S CER ECJ0EC1HJ T 16 5 60 6 C548 4030017460 S CER ECJ0EB1E102K T 21 4 68 9 C549 4030017460 S CER ECJ0EB1E102K T 5 2 60 2 C550 4030017610 S CER ECJ0EC1H090C B 4 4 54 6 C551 4030017430 S CER ECJ0EC1HJ B 11 1 25 C552 4550006970 S TAN TEESVA0G476M8R B 35 3 55 3 C553 4550006970 S TAN TEESVA0G...

Page 23: ... CER ECJ0EB1E102K T 9 7 5 C60 4030017460 S CER ECJ0EB1E102K T 14 5 18 3 C61 4030017460 S CER ECJ0EB1E102K T 11 6 12 2 C62 4030016790 S CER ECJ0EB1C103K T 7 7 8 8 C63 4030017460 S CER ECJ0EB1E102K T 15 8 15 7 C64 4030017460 S CER ECJ0EB1E102K T 12 8 9 6 C65 4030016790 S CER ECJ0EB1C103K T 9 2 6 2 C66 4030017530 S CER ECJ0EC1H0R5B T 17 3 18 8 C67 4030017340 S CER ECJ0EC1H010B T 14 6 12 8 C68 4030017...

Page 24: ...Ω B 38 4 74 9 R36 7030003520 S RES ERJ3GEYJ 472 V 4 7 kΩ B 39 3 44 9 R37 7030003690 S RES ERJ3GEYJ 124 V 120 kΩ B 38 2 42 6 R38 7030005671 S RES ERA3YKD 393V 39 kΩ B 36 2 40 2 R39 7030011140 S RES ERJ8GEYJ JPW B 18 4 53 4 R40 7030011140 S RES ERJ8GEYJ JPW B 23 62 3 R41 7030003860 S RES ERJ3GE JPW V B 40 4 41 2 R43 7030003860 S RES ERJ3GE JPW V B 28 9 61 1 R50 7030008240 S RES ERJ12YJ0R00U B 22 7 5...

Page 25: ...onge 1 MP22 8930068720 2869 A white sheet 1 MP23 8930050220 1903 SP net 1 MP24 8830001340 1903 hex nut 1 MP25 8930059610 Sponge HC 1 MP26 8610007510 Knob springe NO 7800 1 MP27 8810005920 Screw PH M2 10 ZK 2 MP28 8810005700 Screw PH M2 4 ZK 1 MP29 8810009510 Screw PH B0 2 4 NI ZU 4 MP30 8810009560 Screw PH B0 2 6 ZK 1 MP32 8930024310 1121 mic sheet 1 MP33 8930067990 2869 jack cap 1 MP34 8310065050...

Page 26: ...29 C MP28 C J4 M MP20 C S8 M MP1 V MC1 M MAIN unit VCO board MP3 C MP25 C MP8 C MP1 C MP10 C MP9 C MP19 C SP1 C MP6 C DS1 M MP30 C MP16 C MP17 C MP1 P MP42 C MP36 C W1 C MP27 C MP21 C MP32 C Unit abbreviations C CHASSIS PARTS M MAIN UNIT V VCO BOARD P PA BOARD MP23 C Unit mm inch 81 3 3 16 94 3 3 23 32 52 44 21 16 29 9 13 16 28 2 11 8 46 83 127 32 7 2 ...

Page 27: ... 8C Symbol 8E Symbol AD Symbol 7L Symbol 7Q Symbol 9L Symbol 5R Symbol BR Symbol 5C Symbol 5O Symbol 5N B E C B E C B E C B E C E C B E B E C B E C B E C D G S S D G E2 B1 B2 C2 C1 E1 B E C B E C B E C B E C B E C B E C B E C B1 E B2 C1 C2 E1 B1 B2 C1 C2 E1 B1 B2 C1 C2 B1 E B2 C1 C2 E1 E2 B2 C1 B1 C2 E1 B2 E2 C1 C2 B1 E1 C2 B1 C1 E2 B2 E1 C2 B1 C1 E2 B2 B1 E B2 C1 C2 Bottom view D G S DIODES A C A...

Page 28: ...o PA board MP2 MP1 to CHASSIS J1 SQL V M CALL BAND PWR SECTION 9 BOARD LAYOUTS 9 1 9 1 MAIN UNIT TOP VIEW H5 H10 H15 H20 H25 H30 H35 H40 H45 H0 V5 V10 V15 V0 V25 V30 V35 V20 V45 V50 V55 V40 V65 V70 V75 V60 12 16V DC INPUT H5 H10 H0 V5 V10 V15 V0 V25 V30 V20 FUNC PTT H5 H10 H15 H20 H25 H0 V5 V10 V15 V0 V20 9 2 PA BOARD TOP VIEW 9 3 VCO BOARD TOP VIEW 9 4 BC 164 TOP VIEW ...

Page 29: ...J6 LO 16 2 GND DBL1 DBL2 3S VSHIFT GND FIN 15 1 V3C V2C V1C VCC MOD LV2 LV2 LV1 SP MIC DIAL 9 2 BOTTOM VIEW BC 164 H5 H10 H0 V5 V10 V15 V0 V25 V30 V20 PTT LIGHT PSET GND RFO VCC TX3 UTX3 GND RFI FUNC to MAIN unit H5 H10 H15 H20 H25 H0 V5 V10 V15 V0 V20 to MAIN unit J6 J1 LO 16 2 GND DBL1 DBL2 3S VSHIFT GND FIN 15 1 V3C V2C V1C VCC MOD LV2 LV2 LV1 BOTTOM VIEW MAIN UNIT BOTTOM VIEW PA BOARD BOTTOM V...

Page 30: ...077 Q8 Q11 2SC5006 D5 1SV286 D9 1SV308 430M 144M 50M D6 1SV286 D10 1SV308 2SC5006 Q9 Q12 D7 D8 D11 1SV308 Q10 Q13 2SC5006 HVD328C Q4 UNR9114J Q3 XP1114 Q1 XP4601 D1 D18 1SS400 PA BOARD VCC LV1 LV2 LV3 MOD FIN 50_3V 144_3V 430_3V 3S REVERSE AMP XMOD DTCS FIL DTCS R3V MODSET MMUTE D41 1SV308 D45 1SV308 D37 1SV308 D34 1SV308 D38 1SV308 D35 1SV308 D44 1SV308 D43 DAN235E D30 DAN235E D39 HVD328C D16 1SV...

Page 31: ...p C131 R173 15k 150p C48 4 7k R168 DAN235E D10 10 C119 0 01 C118 UNR9213J Q17 XP1114 Q51 4 5 3 2 1 9 10 11 12 13 14 15 16 AFOUT QUAD IFOUT RSSI N DET N REC GND MIXIN FILIN FILOUT DEC IFIN VCC MIXOUT OSCOUT OSCIN 8 7 6 5 4 3 2 1 100p C124 MA2S728 D9 150k R129 150k R128 C123 0 001 3 3k R125 150p C122 100k R120 R121 560 1 5k R104 680k R108 0 001 C120 1M R114 22k R109 0 01 C117 0 1 C116 0 001 C112 UNR...

Page 32: ... 7k R290 470 R284 0 1 C267 D43 DAN235E 1k R275 0 1 C249 2 2k R279 0 1 C256 8 2µ L24 100k R273 HVD328C D39 L20 0 22µ C242 47p 100p C247 100p C241 0 68µ L21 0 1 C238 17 5n L42 7p C314 80n L39 10p C307 80n L33 22p C283 33p C276 33p C269 22p C293 22p C287 60n L31 54n L29 0 001 C266 1SV308 D35 C2012C L19 1SV308 D38 0 001 C240 220 R263 0 001 C232 68p C223 0 001 C227 12n L12 15p C306 21n L38 15p C310 15p...

Page 33: ...2SC4081 C2 0 01 C4 0 01 C5 0 01 Q5 DTC144EU IC4 NJM2904M 5 6 7 8 4 3 2 1 L1 100µ X1 CSTCR4M91G R12 10k C10 47 C9 0 1 C7 0 1 CP9 CP10 CP11 R6 22k IC2 µPC494GS 1 NO INVIN 2 INVIN 3 FB 4 DTC 5 CT 6 RT 7 GND 8 C1 9 E1 10 E2 11 C2 12 VCC 13 OC 14 REFOUT 15 INVIN 16 NO INVIN IC1 NJM2801U1 0543 TE1 1 VO 2 GND 3 CD 4 VOR 5 VIN R53 0 CP2 C20 0 0015 Q2 RSQ035P03TR 1 2 3 4 5 6 R65 0 R61 0 D3 SM240A T R66 10k...

Page 34: ...re 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 3168 Australia Phone 61 03 9549 7500 Fax 61 03 9549 7505 URL http www icom net au E mail sales icom net au 146A Harris Road East Tamaki Auckland New Zealand Phone 64 09 274 4062 Fax 64 09 274 4708 URL ...

Page 35: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14217HZ C1 2005 Icom Inc ...

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