Page 1: ...VHF TRANSCEIVER iF110 iF111 iF121 SERVICE MANUAL...
Page 2: ...0 Bottom cover 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES 1 Make sure a problem is internal before disassembling the transceiver 2 DO NOT open the tran...
Page 3: ...RES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 4 5 3 SOFTWARE ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS...
Page 4: ...mum 128 channels 50 nominal SO 239 13 6 V DC nominal 13 2 V DC nominal TX 7 0 A at 25 W 14 0 A at 50 W Rx 1200 mA maximum audio 300 mA stand by 30 C to 60 C 22 F to 140 F 25 C to 55 C 150 W 40 H 117 5...
Page 5: ...0F K D A converter IC6 M62363FP 650C IF IC IC1 TA31136FN 1st IF filter FI1 FL 335 Located under side of the point Final FET module IC3 S AV33 CPU 5V regurator IC10 AN78L05M 8V regurator IC9 TA7808F VC...
Page 6: ...8 screws E Remove the filter case F Unscrew the screw G Unsolder 3 points H from the antenna connector Unsolder 4 points I from IC3 E F G H I Lift up the front portion of the main unit and remove it I...
Page 7: ...mixer circuit converts the received signals to a fixed frequency of the 1st IF signal with the PLL output frequency By changing the PLL frequency only the desired frequency will pass through a MCF Mo...
Page 8: ...F signals even when noise squelch is open A portion of the AF signals from the FM IF IC IC1 pin 9 passes through the low pass filter IC16 to remove AF voice signals and is applied to the CTCSS or DTCS...
Page 9: ...he refer ence frequency The PLL output frequency is controlled by the divided ratio N data of a programable divider The PLL circuit contains the TX RX VCO circuit Q13 Q14 The oscillated signal is ampl...
Page 10: ...the key matrix Output ports for 5 2 tone and DTMF signals Input port for the PLL unlock signal from the PLL IC MAIN unit IC4 Input port for the key matrix Output ports for CTCSS DTCS signals Input por...
Page 11: ...for the AF volume control signal R14 High VOL is maximum clockwise Input port for the CTCSS DTCS decod ing signals Input port for the single tone decoding signal Input port for the optional board det...
Page 12: ...the appropriate CD drive e Select Run from the Start menu r Type the setup program name using the full path name then push Enter key ex D CSF100ADJ Setup exe t Follow the prompts y Program group CS F...
Page 13: ...eter DC voltmeter GRADE AND RANGE Output voltage 13 2 V DC Current capacity 15 A or more Measuring range 1 100 W Frequency range 100 300 MHz Impedance 50 SWR Less than 1 2 1 Frequency range 0 1 300 MH...
Page 14: ...00 V CTCSS 174 AEh 3 41 V SQL Lev 0 00h 0 00 AGC 255 FFh 5 00 V CH No 01 RX Freq 136 200000 TX Freq RF Power High Mode Wide Transceiver s connection state Reload adjustment data Receive sensitivity me...
Page 15: ...VOLTAGE 1 2 3 4 Operating freq 174 000 MHz Receiving Output power Low1 Transmitting Operating freq 136 000 MHz Receiving Output power Low1 Transmitting MAIN Connect a digital multi meter or an oscill...
Page 16: ...req 155 000 MHz Output power Low1 IF bandwidth Wide CTCSS 151 4 Hz DTCS code 007 Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 No audio applied to the MIC connector T...
Page 17: ...Receiving Operating freq 136 000 MHz IF bandwidth Wide Connect an SSG to the antenna con nector and set as Frequency 136 000 MHz Level 14 V 84 dBm Modulation 1 kHz Deviation 3 5 kHz N W 2 8 kHz N M R...
Page 18: ...RESISTOR ERJ2GEJ 102 X 1 k R67 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R68 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R73 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R74 7030005050 S RESISTOR ERJ2GEJ 103...
Page 19: ...375BTRF D5 1750000510 S DIODE UM9401F D6 1790000620 S DIODE MA77 TX D7 1790001240 S DIODE MA2S728 TX D8 1750000720 S VARICAP HVC375BTRF D9 1750000710 S VARICAP HVC350BTRF D10 1750000710 S VARICAP HVC3...
Page 20: ...7030003320 S RESISTOR ERJ3GEYJ 101 V 100 R74 7030003690 S RESISTOR ERJ3GEYJ 124 V 120 k R75 7030003690 S RESISTOR ERJ3GEYJ 124 V 120 k R76 7030003400 S RESISTOR ERJ3GEYJ 471 V 470 R77 7030003560 S RES...
Page 21: ...R ERJ3GEYJ 221 V 220 R312 7030003720 S RESISTOR ERJ3GEYJ 224 V 220 k R313 7030003800 S RESISTOR ERJ3GEYJ 105 V 1 M R314 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 k R315 7030003680 S RESISTOR ERJ3GEYJ 1...
Page 22: ...70 S CERAMIC C1608 CH 1H 330J T C127 4030007030 S CERAMIC C1608 CH 1H 150J T C129 4030009510 S CERAMIC C1608 CH 1H 010B T C131 4030009510 S CERAMIC C1608 CH 1H 010B T C132 4030011600 S CERAMIC C1608 J...
Page 23: ...C C1608 JB 1H 102K T C339 4030009550 S CERAMIC C1608 CH 1H 2R5B T C342 4550006410 S TANTALUM ECST1VY334R C343 4030006900 S CERAMIC C1608 JB 1H 103K T C348 4030006860 S CERAMIC C1608 JB 1H 102K T C349...
Page 24: ...C 1046 1 DS11 5030002510 LCD L2 0607TAY 1 EP2 8930059170 LCD contact SRCN 2622 SP N W 1 MP1 8930059110 2622 spring 1 FRONT UNIT ORDER NO REF NO DESCRIPTION QTY J4 6450000140 Connector HSJ0807 01 010 1...
Page 25: ...F FRONT UNIT Unit abbreviations F FRONT UNIT M MAIN UNIT C CHASSIS PARTS EP2 F MP6 C MP7 C MP3 C SP1 F MP4 C MP17 C MP11 C MP7 M MP1 C J1 C MP10 C MP10 M MP1 M MAIN UNIT MP9 M MP11 M MP9 C MP6 M MP2...
Page 26: ...HQ Symbol R25 Symbol AB B E C 2SC4116 BL Symbol LL Symbol QO Symbol R25 Symbol MFO Symbol DAQ Symbol VG Symbol 4L Symbol XY Symbol K1 Symbol UF Symbol U73 Symbol 04 Symbol 26 Symbol H27 Symbol 9H Sym...
Page 27: ...SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT TOP VIEW 8V 1 to Microphone 7 2 8 J1 AFO MICE GND CLO PTT MIC CLI 9 1...
Page 28: ...40 J2 DIM DAST OPT3 OPT2 OPT1 PTTO PTTI REM SCK SI SO CIRQ CCS MIC EPTT NC BEEP PWON 8V GND GND TONE TENC NOIS EXOE EXST UNLK PLST CDEC SDEC OV12 RSSI LVIN TEMP BATV NC NC 5V CPU5 AFO 1 13 2 14 J3 GN...
Page 29: ...SY NC SIGO OPT1 OPT2 OPT3 GND DAST OV12 OV12 DIM 40 2 39 to FRONT unit J2 1 J2 DAST OPT3 OPT2 OPT1 PTTO PTTI REM SCK SI SO CIRQ CCS MIC EPTT NC BEEP PWON 8V GND GND TONE TENC NOIS EXOE EXST UNLK PLST...
Page 30: ...SP 14 8 1 1 8 16 9 1 7 14 8 7 12 24 1 13 9 4 BOTTOM VIEW MAIN UNIT...
Page 31: ...Q36 DTC144EU Q35 DTC363EK MUTE AF LA4425A IC8 AMP AF TA75S01F IC15 AMP PRE D23 DA221 Q29 DTC114TU Q25 2SD1664 REG T8 TA7808F IC9 REG 8 Q28 XP6501 Q27 2SA1577 REG 5 NJM12902V IC16 HPF HPF ALFYM450F K...
Page 32: ...2 47k SENC2 SENC1 R31 100k SENC0 R30 220k C29 10 11 GND V 4 IC5 NJM12902V C28 0 1 9 10 IC5 NJM12902V 8 C84 47p R44 150k C27 270p C76 0 1 C41 0 001 R43 33k R42 39k C25 0 01 C26 0 1 R41 10k R40 47k R81...
Page 33: ...R209 47k C200 0 1 R210 100K TEMP C350 1 C287 R291 100k 0 0033 MOD F C337 0 001 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IC1 TA31136FN OSCIN OSCOUT MIXOUT VCC IFIN DEC FILOUT FILIN MIXIN GND N REC N DET...
Page 34: ...R48 180k C81 0 001 C77 0 001 R53 1 R58 100 R10 270k R9 10k C511 0 3p D12 1SS375 50W only 50W only C80 0 1 R52 15k R54 10k 25W 8 2k 50W C78 0 001 R57 10k T2 C74 0 001 C73 1 D28 MA2S728 R55 4 7k C88 0...
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Page 36: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13911HZ C1 C 2003 Icom Inc...