Icom IC-400PRO Service Manual Download | Manualshive

Page: 31 / 36

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SECTION 10

BLOCK DIAGRAM

VOLTAGE LINE

TX LINE

RX LINE

COMMON LINE

DISC

MIC

AFO

BEEP

8V

MCOT

MCIN

BEEPO

RSSI

1st MIXER

8V

CSFT

19.6608 MHz

BEEP

NOIS
DIM
CDEC
SDEC

EPTT
LVIN
RSSI

F

D

E

DET

DISC

J6

MAIN UNIT

FRONT UNIT

J1

CTCSS/DTCS DEC

5/2 TONE DEC

J1

BEEP0

353.65 MHz-443.65 MHz

46.35 MHz

450 kHz

SQIN

DET

45.9 MHz

15.3 MHz

HVC362

D21

BAL

REF

400-430 MHz
440-490 MHz

TENC

NWC

AF VR

PWR

S2-S7

JACK

MIC

ACC

M62363FP-650C

IC6

BU4066BCFV

IC14

IC1 TA31136FN

CPU

NOIS

TMUT

T2

T1

T2

AF ON

DATA LINE

RX LINE

TX LINE

COMMON LINE

CONTROL LINE

Explanatory notes

DUSE

TENC

REM

TONE

RSSI

TX VCO

F

RX VCO

RXC

TXC

8V

LVIN

OPTION

IF IC

D/A

DISC

MCOT

MCIN

SIGO

SIG

F

EPTT

HORNO

DIM

DIM

HORN

PTT

AFO

IN

8V

EXOE

LCS

LSCK

LSO

AFO

MIC

PTTI

PTT

CLI CLO

SENC0-3

CENC0-2

RESET

8V

VCC

CPU5

CPU5

HV

PWON

RXC

TMUT

VCC

8V

R8V

T8V

5V

CDEC

SDEC

AFVI

POSW

KS0-1

KR0-2

RMUT

MMUT

TXC

SW

ANALOG

Q30 DTC144EU

Q26 2SA1577

REG

R8

2SK1829

Q1

AGC

LPF

R59

PTTO

2SC3356

Q8

AMP

DRIVE

2SC5107

Q9

AMP

YGR

DTC144EU

Q5

SW

W/N

DTC144EU

Q3

FIL

SW

AN78L05M

IC10

IC17

BUSY

RXC

NWC

RMUTE

RMUT

TMUT
HORNO

BU4094BCFV

D39

DAP222

CPU5

REG

W2

2SJ144

Q31

SW

LINE

2SK880

Q18

BUFF

2SC5107

Q12

BUFF

2SC5107

Q11

BUFF

2SC5107

Q10

BUFF

J4

SP

POSW

R14

D29 MA2S111

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

FI2

CERAMIC

BPF

2SC4215

Q4

AMP

IF

FL-335

FI1

XTAL

BPF

TA75S01F

IC2

AMP

APC

3SK293

Q2

AMP

RF

BPF

HVC350B

D8

BPF

HVC350B

D43

TONE
TRAP

HVC350B

D4

BPF

HVC350B

D9

BPF

HVC350B

D10

BPF

3SK299

Q3

MA368

D18

MOD

FM

NJM12902V

IC5

AMP

NJM12904V

IC5

AMP

CR-520

X1

CDBC450CX24

X1

CR-741

X2

2SC4116

Q34

X3

MB15A02PFV-1

IC4

IC

PLL

LOOP

FIL

Q16 DTC144EU

Q15 XP1214

SW

VCO

2SC4116

Q17

RIPPLE

FIL

D17 HVC350B

2SC4226

Q14

D16 HVC350B

2SC4226

Q13

D14 1SV307

D15 MA77

SW

TX/RX

RA30H4452M-21

IC3

AMP

PWR

D5 UM9401F

D2 UM9401F

SW

ANT

NJM12902V

IC16

RESTO-

RATION

MA77

D4

SW

SHIFT

S-80942CNMC-G9C

IC2

HD64F3687

IC1

RESET

EXP

MMUT

CTRL

HN58X2464TI

IC3

EEPROM

LC75834W

IC6

SEG1-32

COM1-4

DTC114TU

Q5

DTC114TU

Q2

LIGT2

LIGT1

DRIVER

LCD

CTRL

LIGT

DS1-9

SML-311YT

CTRL

DIM

Q24 DTC144EU

Q23 2SJ377

POWER

SW

D28 MA2S111

SW

MUTE

2SC4215

Q19

REF

MA728

D1, D11

DET

PWR

NJM12902V

IC5

BEEP

LPF

NJM12902V

IC5

LPF

NJM12902V

IC16

LPF

NJM12902V

IC16

LPF

NJM12904V

IC5

SIG

LPF

LPF

LPF

LPF

LPF

LPF

KEY

×

6

L2-0607TAY

DS11

LCD

REM

SIGO

BEEPO

AFONO

MMUTE

PTTI

BUSY

RMUT

CTRL

MMUT

MMUTE

D40

DAP222

AFONO

AFON

D31

DAN222

AFON

CTRL

10 - 1

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Summary of Contents for IC-400PRO

Page 1: ...UHF TRANSCEIVER i400PRO SERVICE MANUAL...

Page 2: ...ttom 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 transcei...

Page 3: ...CIRCUITS 4 4 4 5 PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 4 5 3 SOFTWARE ADJUSTMENT 5 5 5 4 TRIMMER ADJUSTMENT 5 7 SECTION 6 PARTS LIST SECTION 7 M...

Page 4: ...permissible deviation 2 5 kHz Narrow 5 0 kHz Wide Frequency error 2 5 ppm Spurious emissions 30 dBm 25 W 74 dBc 5 W 67 dBc Adjacent channel power 16 dBm 25 W 60 dBc 5 W 53 dBc Narrow 22 dBm 25 W 66 dB...

Page 5: ...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 RA30H4452M 21 CPU 5V regulator IC10 AN78L05M 8V regulator IC9 TA780...

Page 6: ...the front unit B C D A J2 J7 y Unscrew 8 screws F u Remove the filter case G i Unscrew the screw H o Unsolder 3 points I from the antenna connector 0 Unsolder 5 points J from IC3 F G H I J 1 Lift up...

Page 7: ...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 Monolithic Crystal Filter FI1 at the n...

Page 8: ...AF 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 DTC...

Page 9: ...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 amplifi...

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: ...level detection Input port for the PLL lock voltage 44 46 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 OPT3 OPT1 SI CLI CLO POSW DIM NOIS CIRQ CCS PTT EPTT HANG AFVI CDEC SDEC OV12 RSSI LVIN Pin...

Page 12: ...iate 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 CS400PROADJ Setup exe t Follow the prompts y Program group CS 400PRO ADJ...

Page 13: ...eter DC voltmeter GRADE AND RANGE Output voltage 13 8 V DC Current capacity 10 A or more Measuring range 1 50 W Frequency range 300 600 MHz Impedance 50 SWR Less than 1 2 1 Frequency range 0 1 600 MHz...

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 m...

Page 15: ...VOLTAGE 1 2 3 4 Operating freq 450 000 MHz Receiving Output power Low1 Transmitting Operating freq 500 000 MHz Receiving Output power Low1 Transmitting MAIN Connect a digital multi meter or an oscill...

Page 16: ...er Low1 Transmitting IF bandwidth Narrow Transmitting Operating freq 500 000 MHz Output power Low1 IF bandwidth Wide CTCSS 67 Hz DTCS code 007 Set the FM deviation meter as HPF OFF LPF 20 kHz De empha...

Page 17: ...iving Operating freq 450 000 MHz IF bandwidth Wide Connect an SSG to the antenna con nector and set as Frequency 450 000 MHz Level 14 V 84 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Set an SSG a...

Page 18: ...too soft BE CAREFUL 5 tone calling beep sound becomes loud or soft when beep volume adjusts to loud or soft BEEP VOLUME 1 Operating freq Any Receiving FRONT Push any button except POWER switch then ve...

Page 19: ...B R73 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k B S Surface mount R74 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k B R75 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k B R76 7030005120 S RESISTOR ERJ2GEJ 102 X 1...

Page 20: ...DE MA2S111 TX B D21 1750000830 S VARICAP HVC362TRF T D22 1790000700 DIODE DSA3A1 B D23 1750000370 S DIODE DA221 TL B D25 1790001250 S DIODE MA2S111 TX B D26 1790001250 S DIODE MA2S111 TX B D28 1790001...

Page 21: ...Surface mount 6 3 REF ORDER DESCRIPTION M NO NO M Mounted side T Mounted on the Top side B Mounted on the Bottom side MAIN UNIT R134 7030003650 S RESISTOR ERJ3GEYJ 563 V 56 k T R135 7030003690 S RESIS...

Page 22: ...1608 JB 1H 102K T T S Surface mount 6 4 REF ORDER DESCRIPTION M NO NO M Mounted side T Mounted on the Top side B Mounted on the Bottom side MAIN UNIT C67 4030006860 S CERAMIC C1608 JB 1H 102K T B C69...

Page 23: ...1608 CH 1H 030B T B C309 4030006900 S CERAMIC C1608 JB 1H 103K T B C310 4030006860 S CERAMIC C1608 JB 1H 102K T B C311 4030006860 S CERAMIC C1608 JB 1H 102K T B C314 4030006900 S CERAMIC C1608 JB 1H 1...

Page 24: ...002510 LCD L2 0607TAY 1 EP2 8930059170 LCD contact SRCN 2622 SP N W 1 MP2 8510015290 2623 F shield 1 MP3 8930058840 Shield sponge T 1 FRONT UNIT ORDER NO REF NO DESCRIPTION QTY J4 6450000140 Connector...

Page 25: ...AIN UNIT C CHASSIS PARTS EP2 F MP6 C MP7 C MP3 C SP1 F MP17 C MP11 C MP7 M MP1 C J1 C MP10 C MP2 C MP14 C R14 F J1 F MP13 M J4 M W2 M MP8 M MP2 M MP6 M MP3 M MP9 C MP13 C MP4 M MP5 M MP9 C MAIN UNIT M...

Page 26: ...44EUA T106 DTC363 EK XP1214 XP6501 AB Symbol 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...

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: ...24 13 12 36 37 25 1 7 14 8 17 32 33 48 49 8 5 1 4 64 1 39 2 to MAIN unit J2 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 UNL...

Page 29: ...GO 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 CDEC SDE...

Page 30: ...SP 14 8 1 1 7 14 8 7 16 9 1 8 12 24 1 13 9 4 BOTTOM VIEW MAIN UNIT...

Page 31: ...107 Q11 BUFF 2SC5107 Q10 BUFF J4 SP POSW R14 D29 MA2S111 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 XP65...

Page 32: ...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 100k R80 100k J1 8V 8V CLO AFO PTT MICE MIC GND CLI C81 0...

Page 33: ...0 1 R210 100K TEMP C350 1 R291 100k 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 RSSI IFOUT QUAD AFOUT R44...

Page 34: ...78 0 001 R57 10k T2 C73 1 D28 MA2S111 R55 1k C88 47p TMUT 10 9 8 IC16 NJM12902V C324 470p R251 470k R250 100k C327 10 5V CPU5V 8V 5V CPU5V 8V 5V CPU5V CPU5V HV CPU5V 8V CPU5V 8V 5V CPU5V 5V 5V CPU5V 8...

Page 35: ......

Page 36: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14003HZ P2 C 2003 Icom Inc...

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