Icom IC-F5121D Service Manual Download

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The combination of top side and bottom side of this

[Ext. SP JACK]

• MAIN UNIT
(BOTTOM VIEW)

IC3

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X2001

B7402A

-T8V

MOD

-DISC

RSSI-

NWC-

T2-

FI3

CPUV-

-HORN

BEEP

-TLVA

RXC

-AFO

-VREF

TXC

RLVA

-AFON

BAL-

3.3V-

1.6V-

8V-

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Summary of Contents for IC-F5121D

Page 1: ...S 14713XZ C1 Feb 2011 VHF MOBILE TRANSCEIVERS...

Page 2: ...name 4 Quantity required ORDER EXAMPLE 1110007320 S IC NJM2591V IC F5121D MAIN UNIT 5 pieces 8820001210 Screw 2438 screw IC F5122D Top cover 10 pieces Addresses are provided on the inside back cover...

Page 3: ...UITS 5 1 5 2 TRANSMITTER CIRCUITS 5 2 5 3 FREQUENCY SYNTHESIZER CIRCUITS 5 3 5 4 VOLTAGE DIAGRAM 5 3 5 5 PORT ALLOCATIONS 5 4 SECTION 6 ADJUSTMENT PROCEDURE 6 1 PREPARATION 6 1 6 2 FREQUENCY ADJUSTMEN...

Page 4: ...5 9 W 1 6 H 4 6 D in 50 W ver 150 W 40 H 167 5 D mm 5 9 W 1 6 H 6 6 D in Weight approximate 25 W ver 0 8 kg 1 8 lb 50 W ver 1 1 kg 2 4 lb M TRANSMITTER Output power 25 W ver 25 W 10 W 2 5 W 50 W ver 5...

Page 5: ...min 67 dB typ FM hum and Noise without CCITT Filter Except EUR Narrow 34 dB min 40 dB typ Wide 40 dB min 45 dB typ FM hum and Noise with CCITT Filter EUR only Narrow 40 dB min 50 dB typ Middle 43 dB m...

Page 6: ...IEWS FRONT UNIT CPU IC51 LCD DRIVER IC6 MIC AMP IC7 MIC GAIN SW IC53 EEPROM IC52 CLOCK FREQUENCY SHIFT DIODE D60 CPU CLOCK X51 BACKLIGHT SW Q5 DIMMER CONTROLLER Q2 MIC AMP FREQUENCY RESPONSE SW IC54 B...

Page 7: ...1008 ALC HPF IC1005 DSP IC2007 LINEAR CODEC IC2006 IF DEMODULATOR IC IC4 3 LINE REGULATOR Q1017 RIPPLE FILTER Q2 VCO SW Q10 HV LINE SWITCH Q1003 8V LINE REGULATOR IC1002 R8 LINE SW Q1013 APC AMP IC2 1...

Page 8: ...ERENCE FREQUENCY OSCILLATOR X2 3V LINE REGULATOR IC1001 AF AMP IC6 ELECTRONIC VOLUME IC IC1006 IDC AF AMP HPF IC1007 PLL IC IC8 DRIVE AMP Q17 1ST IF MIXER Q19 2ND IF FILTER For wide mode FI2 2ND IF FI...

Page 9: ...om the bottom cover and then remove it 2 Disconnect the flat cable and speaker cable 3 Remove 2 screws from the both sides of the front panel and then remove it in the direction of the arrow 4 Remove...

Page 10: ...r 3 Install the cable as shown OPC 1939 OPC 2078 Cut off the bushing as in the illustration K I 4 Cut or short the patterns as below For AF output 6 Recover the bottom cover screws and DC power cable...

Page 11: ...ilter FI2 wide middle mode or filters FI1 and FI2 narrow to eliminate un wanted signals It is amplified by the 2nd IF AMP and then demodulated by the detector circuit which employs the dis criminator...

Page 12: ...filter From IF IC IC4 Pin16 To RX AF circuits Noise detector Com parator NOISE SQUELCH DIAGRAM NOIS IC1006 IC4 14 8 7 13 15 J1 FRONT UNIT Option connector MIC JACK J1003 MIC GAIN SW IC53 AMP IC7 ALC A...

Page 13: ...ain TX power The amplified TX signal is passed through the antenna SW D24 D26 D28 D32 and the LPFs which eliminates harmonics and then fed to the an tenna APC CIRCUITS D27 D29 and D35 rectify a portio...

Page 14: ...serial data I O C13 POSW input I C14 ADS 1st IF filters FI4 and FI5 switching control L During digital mode O C15 NWC Receive mode narrow mid wide switching L During narrow mode O D6 DSCK DSP IC2007...

Page 15: ...tput level 0 1 300 MHz 0 1 V to 32 mV 127 to 17 dBm RF Power Meter Measuring range Frequency range Impedance SWR 0 1 30 W 25 W ver 0 1 60 W 50 W ver 100 300 MHz 50 Better than 1 2 1 Oscilloscope Frequ...

Page 16: ...own Select Middle CONVENIENT The cloning data file for the adjustment as described in this service manual is attached Right click the clip icon and select Save Embeded File to Disk Before starting the...

Page 17: ...DITION REFERENCE FREQUENCY TX OUTPUT POWER SQUELCH SENSITIVITY PLL LOCK VOLTAGE RX PLL LOCK VOLTAGE TX CTCSS DEVIATION DTCS DEVIATION MODULATION BALANCE MODULATION BALANCE PRESET DIGITAL DEVIATION FM...

Page 18: ...on the I O Check window as below LVIN On the I O Check window 3 0 4 0 V Verify TX 4 Channel 1 4 Transmitting 2 5 3 5 V Verify REFERENCE FREQUENCY 1 Channel 1 5 Transmitting Loosely couple a frequency...

Page 19: ...hannel 1 13 Transmitting MOD N C Band high 4 Channel 1 14 Transmitting MOD N H 5 Push ENTER on the PC s keyboard to store the value and quit the FM deviation For narrow mode adjustment mode MOD N Star...

Page 20: ...t the TX Mode to 3 on the Adjust Utility screen 2 Connect a modulation analyzer to the antenna connector through an attenuator and set it as described in the DIGITAL DEVIATION above CTCSS 0 65 to 0 75...

Page 21: ...ted too Channel 1 28 Receiving Channel 1 14 Connect the SSG to the antenna connetor and set as Frequency 136 000 MHz Level 23 dB 84 dBm Modulation 1 kHz Deviation 3 00 kHz except EUR 2 40 kHz EUR Rece...

Page 22: ...TE 21 USA 01 T 24 4 54 7 1750002060 S DIO RN752TE 21 EXP 02 D29 1750001820 S DIO LRB706F 40T1G SLVJ B 21 8 54 2 D30 1790001241 S DIO MA2S7280GL T 31 8 39 7 D31 1750000721 S VAR HVC375BTRF E B 33 3 38...

Page 23: ...the Top side B Mounted on the Bottom side S Surface mount REF PARTS DESCRIPTION M H V NO NO LOCATION MAIN UNIT R334 7030005000 S RES ERJ2GEJ 471 X 470 T 90 7 63 2 R337 7030010040 S RES ERJ2GEJ JPW T 8...

Page 24: ...the Top side B Mounted on the Bottom side S Surface mount REF PARTS DESCRIPTION M H V NO NO LOCATION MAIN UNIT C15 4030017400 S CER C1005 CH 1H 220J T B 24 3 51 2 C17 4030017600 S CER C1005 CH 1H 080C...

Page 25: ...PARTS DESCRIPTION M H V NO NO LOCATION MAIN UNIT C404 4030011180 S CER GRM31M2C2H220JV01L GRM42 6 CH B 20 4 58 7 C408 4030017460 S CER C1005 JB 1H 102K T B 43 9 57 9 C409 4030017460 S CER C1005 JB 1H...

Page 26: ...CER C1005 JB 1A 104K T B 26 4 5 8 C2013 4550007730 S TAN TEESVJ 0J 106M8R B 25 2 6 2 C2014 4030016930 S CER C1005 JB 1A 104K T T 32 0 6 6 C2015 4030016930 S CER C1005 JB 1A 104K T B 10 1 6 4 C2016 45...

Page 27: ...102 X 1K B 86 5 23 2 R775 7030005090 S RES ERJ2GEJ 104 X 100K B 59 2 5 6 R776 7030005090 S RES ERJ2GEJ 104 X 100K B 56 0 19 8 R777 7030005090 S RES ERJ2GEJ 104 X 100K B 82 3 23 8 R778 7030005090 S RE...

Page 28: ...R DESCRIPTION QTY NO NO J1 6450002210 3017 8821 KIN 1 J2 6510027960 04 6294 040 000 800 1 J3 6510025142 10FLT SM2 TB LF SN M 1 DS11 5030003390 TAK 35877 FX 3331 ITAK 1 SP1 2510001221 C052SB500 14 OSC...

Page 29: ...ions F FRONT UNIT M MAIN UNIT C CHASSIS PARTS MP5 F MP9 F DS11 F MP6 F MP1 F SP1 F MP11 F MP5 C 2 MP3 M MP1 C MP1 C 50 W version 25 W version J1 C MP4 C 2 MAIN UNIT MP3 C 4 MP5 M MP2 C MP7 C 4 MP3 C M...

Page 30: ...of top side and bottom side of this FRONT UNIT TOP VIEW C9 C10 C12 C128 C129 D1 D2 DS1 DS2 DS3 DS4 DS5 DS6 DS7 DS8 DS9 J1 R14 R14 R18 R76 H0 H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H55 H60 H65 H70 H75...

Page 31: ...C806 C807 C808 C809 C810 C811 D3 D5 D60 IC6 IC7 IC51 IC52 IC53 IC54 J2 J3 L1 L2 Q1 Q2 Q5 Q10 Q95 Q96 Q97 R7 R8 R9 R11 R12 R15 R16 R19 R20 R40 R41 R42 R43 R44 R46 R47 R51 R60 R83 R85 R86 R87 R88 R89 R9...

Page 32: ...C2041 C2042 C2043 C2044 C2054 C2056 C2061 C2062 C2063 CP1 D13 D14 D17 D18 D24 D24 D25 D26 D28 D30 D34 D1005 D1006 D2002 D2006 D2007 EP9 EP2004 EP2006 FI4 FI5 IC2 IC2 IC4 IC4 IC5 IC7 IC1002 IC1005 IC10...

Page 33: ...D7 D8 D9 D10 D11 D12 D15 D16 D21 D27 D29 D31 D32 D35 D37 D1002 D1003 D1004 D1007 D1008 D2003 D2004 D2005 EP1 EP7 EP8 EP2001 EP2005 FI1 FI1 FI2 FI3 FI6 FI7 FI8 IC6 IC8 IC1001 IC1004 IC1006 IC1007 IC200...

Page 34: ...LIGT2 450kHz DIF I C2007 DSP TMS320VC5509AZHH EAFO VOL IC AK2330 VIN1 VOUT1 DAFO I C1006 AF BEEP DMO DMI MOD MOD I C1006 LEVEL AK2330 BAL VOL IC VCON to REF TCXO LINEAR CODEC LEVEL I C1006 VOL IC MOD...

Page 35: ...CSB 45 SCL 46 SD 47 TEST 48 I NHb C805 0 47 C806 47 J3 1 2 3 4 5 6 7 8 9 1 0 C807 0 1 CP22 CP23 CP24 CP25 CP26 C808 0 1 C809 0 1 R782 100K J21 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22...

Page 36: ...7 56P C306 6P C308 3P C395 0 01 C394 0 01 AD S VCON DIF C301 0 001 C408 0 001 C135 0 001 C54 0 001 C32 0 001 C480 0 001 C469 0 001 C88 0 001 C107 0 001 C391 0 001 C197 0 001 C476 0 001 C372 0 001 C87...

Page 37: ...1069 1K R1070 1K R1031 10K Q1018 LDTC114YE Q1016 LDTC114YE Q1001 LDTC114YE Q1005 LDTC114YE Q1012 LDTC114YE R1080 120K IC1001 XC6408EN22PR G 1 VROUT 2 VSS 3 CD VSEN 4 VDOUT 5 VIN Q1007 LDTC114YE Q1010...

Page 38: ...P2001 C2021 4 7 C2048 0 1 C2018 0 1 C2010 NFM18PC104R1C3 EP2003 MMZ1005S601CT C2012 0 1 C2022 4 7 DSCK R2024 47K C2025 47P C2050 10P R2030 47K D2002 MA2S7280G C2040 0 01 R2048 100K R2049 100K R2052 10...

Page 39: ...454 7619 Glenwood Centre 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 Unit 1 103 Garden Road Clayton VIC...

Page 40: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14713XZ C1 2011 Icom Inc...

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