Icom IC-400PRO Service Manual Download

Page: 33 / 36

11-2 MAIN UNIT

VOLTAGE LINE

Explanatory notes

TX LINE

RX LINE

COMMON LINE

R77

10k

SCK

CIRQ

CCS

GND

DISC

DET

BEEPO

AFONO

OV12

DAST

OPT3

OPT2

OPT1

SIGO

BUSY

R266 47k

R267 27k

R268 10k

R265 18k

CPU5V

R270 100k

R264 68k

R269 100k

R263 1M

R262 1M

R261 1M

R271 100

MIC

CP24

5V
CPU5V
8V

CP23

C311

0.001

SCK

OV12

DAST

CIRQ

CCS

OPT3

REM

OPT2

DISC

OPT1

DET

SIGO

BEEPO

RMUTE

MMUTE

REM

RMUTE

MMUTE
MCIN

MCOT

PTTO

PTTI

BUSY

AFONO

MAIN UNIT (1)

to
Optional
unit

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

SCK

CIRQ

CCS

MIC

EPTT

BEEP

PWON

GND

TONE

TENC

NOIS

EXOE

EXST

UNLK

PLST

CDEC

SDEC

OV12

RSSI

LVIN

TEMP

BATV

CPU5

AFO

8V
CL0
AFO
PTT
MICE
MIC
GND
CLI

to
mic
jack

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

SCK

CIRQ

CCS

MIC

EPTT

BEEP

PWON

GND

TONE

TENC

NOIS

EXOE

EXST

UNLK

PLST

CDEC

SDEC

OV12

RSSI

LVIN

TEMP

BATV
NC
NC

CPU5

AFO

FRONT UNIT

R147

MICIN

CPU5V

R148

R143

R149

R150

R141

C204 47p

C201 0.1

C202 0.1

C207 0.001

C208 0.001

C209 0.001

C210 0.001

C203 0.1

C388

180p

R145 8.2k

R144 1k

R146 1k

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

EXOE

EXST

UNLK

PLST

TONE

TENC

NOIS

CDEC

SDEC

CCS

MAIN
UNIT
(2)

PWON

BEEP

EPTT

BATV

R110

8V
CPU5V
5V

CPU5V

C162

0.01

R220
100k

REF

BAL

C163
10

R222
10k

C164

0.001

R219

100k

R309

100k

R310

100k

D21

HVC362

L10

1.8

BUS LINE2

C161
100p

C160

X2
CR-741

R105

47k

D20

MA2S111

R106

82k

C158

100p

R104

1.2k

C156

47p

C157

100p

Q19
2SC4215

C142

0.001

R101

C143

0.001

C141

0.001

R100

47k

10
11
12
13
14
15
16

8
7
6
5
4
3
2
1

CLOCK
DATA
LE
FC
NC
FOUT
P
B

FIN

GND

VCC

OSCOUT

OSCIN

VCC

CPU5V

IC4
MB15A02PFV-1

C152 47P

C153 47P

C154 47P

C151

0.1

R103

150k

C155

47p

C140

0.1

C377

180p

CPU5V

VCC

CPU5V

VCC

L29
1.8

UNLK

SCK
SO
PLST

R97
1k

R95
10k

C146

0.1

C138

0.001

C124

1.5p

R89

10k

C147

C130

0.047

R96

3.9k

Q18
2SK880

R92
120k

R91

47k

C132

0.001

R90

470k

LVIN

CP1

C145

47p

C314

0.01

R98

2.2k

R87

R86

220k

C148

Q17
2SC4116

C128

C129

0.5p

D17

HVC350B

C144

47p

L28
1.8

D16

HVC350B

D18

MA368

C125

L27
1.8

L25

11n

C134

C126
9p

R81
4.7

R85
3.3k

C114

C115

Q14
2SC4226

R79
3.3k

C116

0.001

C117

470p

C131

0.001

C133

C394
0.0056

C123
8p

R84
3.3k

C121

C122

R82
4.7

R292
6.8k

Q13
2SC4226

R83
3.3k

C119

0.01

C120

470p

Q15
XP1214

EP1

R211

C299

C298

L32
15n

C113
0.5p

C118
0.5p

R318

C357

0.1

TXC

C139

0.1

Q16
DTC144EU

C111

47p

C112

0.1

R319

R209

47k

C200
0.1

R210
100K

TEMP

C350
1

R291
100k

MOD

C337
0.001

1
2
3
4
5
6
7
8

IC1
TA31136FN

OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN

MIXIN

GND

N-REC
N-DET

RSSI

IFOUT
QUAD

AFOUT

R44

VCC
5V

220k

C70

390p

R45
100k

R46

330

C71

0.1

FI2

ALFYM450F=K

R40

1.5k

R39
47

L33

0.82

C307

C305

56p

C306
4p

Q34
2SC4116

Q37
2SC4213

C69

390p

SQIN

R236

1.2k

R237

680k

L35

0.22

C309
0.01

C304
10p

R43

470

C66

0.001

DET

C348

0.001

RSSI

NOIS

C63
47p

C65
0.001

C62
100p

R37

2.7k

C64

0.001

NWC

Q5
DTC144EU

CDBC450CX24

R36

3.9k

R38

100k

C75

C67

0.001

R290

680

R34

120k

C60

0.001

C58

0.001

R33

330

R28

C367

1.5p

R8V

R35

100

C59

0.001

Q4
2SC4215

PTTO

PTTI

IC14
BU4066BCFV

1
2
3
4
5
6
7

14
13
12
11
10
9
8

I/O
O/I
O/I
I/O
CONT.B
CONT.C
VEE

VDD

RMUT
RMUT

CONT.A
CONT.D

I/O
O/I
O/I
I/O

IC17
BU4094BCFV

1
2
3
4
5
6
7

16
15
14
13
12
11
10

STR
D
CLK
Q1
Q2
Q3
Q4

VDD

QE
Q5
Q6
Q7
Q8
QS

VSS

TXC

MMUT

R138

100k

C185

0.001

R117

180k

+
-

12
13

IC16
NJM12902V

R121

4.7k

R120 10k

R119

5.6k

R118

12k

R114

12k

C169
0.047

C168
0.047

R115

2.7k

R317

470k

C167
0.1

R122
1.5k

R316
100k

R285

100

DISC

CP2

DET

AFSW

DISC

R125

100k

C181
0.1

R124

4.7k

C182
0.0033

R129
100

R128

10k

R130

10k

C287

0.001

MOD

VCC
5V

CPU5V

AFONO

MMUT

MMUTE

MMUT
TXC

EXOE

TMUT

HORNO

BUSY

EXST
SO
SCK
RXC

NWC
RMUTE

BEEPO

AFON

RMUT

CPU5V

R139

100k

RMUT

-
+

2
3

IC5
NJM12904V

R185

120k

R183

220k

C177

0.0056

R184
56k

C178

82p

R186

100k

R187

2.2k

R188
4.7k

C179

0.015

R135

120k

R134

56k

R133

150k

SIG

C173

0.1

C172

0.0082

R320

33k

C366

0.1

R136

10k

R140
100k

R137

68k

C175

0.001

C359
1

R112

27k

R111

3.9k

R113

2.2k

C180

1
2
3
4
5
6
7
8
9

10
11
12

VIN1
VOUT1
VOUT2
VIN2
VDD
LD
CLK
DI
VIN3
VOUT3
VOUT4
VIN4

VIN8

VOUT8
VOUT7

VIN7
GND

RESET

VDAREF

VIN6

VOUT6
VOUT5

VIN5

IC6
M62363FP-650C

C174

CPU5V

R231
10k

C283
0.001

DET

TENC

DAST
SCK
SO

BAL

R215

470

SQIN

REF

AFSW

SCK

CIRQ

R142

RSSI

AFO

CP25

TEMP

LVIN

R126
470

C183

0.1

C365

0.1

C184 0.001

R127
47k

IC5

NJM12904V

BUS LINE1

VCC

C310

VCC

MICIN

0.001

C159

0.1

R93
1k

D37
MA2S111

R78
1k

R80
1k

C297
10p

RXC

V+

GND

IC5
NJM12904V

C248

0.001

C308
3p

0.1

C374

C373

C61
100p

OV12

R116
12k

C170

0.001

TONE

C282

0.1

VCC

C286

0.01

D39

DAP222

D31

DAN222

D40

DAP222

C127

0.3p

L26

11n

L23
0.82

R164

47k

D38

MA2S111

Q38
DTC144EU

R163

10k

CPU5V

590mVrms
(40mVrms at mic terminal)

5.0V

15.3 MHz
1.5Vp-p

7.0V

TX: 0V
RX: 3.0V

TX: 3.0V
RX: 0V

3.1V

4.9V

WIDE:0.9V
NARROW:0.8V

4.9V

TX: 0V
RX: 7.4V

WIDE: 5.0V
NARROW: 0V

MEASUREMENT CONDITIONS
VOLTMETER
Amplitude(Oscilloscope) : 100 MHz
Frequency : 465 MHz
Transmission : 25 W

11 - 2

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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