Icom IC-400PRO Service Manual Download

Page: 32 / 36

SECTION 11

VOLTAGE DIAGRAMS

11-1 FRONT UNIT

VOLTAGE LINE

Explanatory notes

RX LINE

TX LINE

DIM

DAST

OPT3

OPT2

OPT1

PTTO

PTTI

REM

SCK

CIRQ

CCS

MIC

EPTT

NC
NC
NC

BEEP

PWON

GND

TONE

TENC

NOIS

EXOE

EXST

UNLK

PLST

CDEC

SDEC

OV12

RSSI

LVIN

TEMP

BATV

CPU5

AFO

to
MAIN
unit J2

IC1
HD64F3687

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16

P86/AN6
P87/AN7
AVCC
X2
X1
VCL
RES
TEST
VSS
OSC2
OSC1
VCC
P50/WKP0
P51/WKP1
P34
P35

P36

P37

P52/WKP2

P53/WKP3

P54/WKP4

P55/WKP5/ADTRG

P10/TMOW

P11/PWM

P12

P56/SDA

P57/SCL

P74/TMRIV

P75/TMCIV

P76/TMOV

P24

P63/FTI0D0

P62/FTI0C0

P61/FTI0B0

NMI

P60/FTI0A0

P64/FTI0A1

P65/FTI0B1

P66/FTI0C1

P67/FTI0D1

P85

P86

P87

P20/SCK3

P21/RXD

P22/TXD

P23

P70/SCK3_2

P71/RXD_2

P72/TXD_2

P14/IRQ0

P15/IRQ1/TMIB1

P16/IRQ2

P17/IRQ3/TRGV

P33

P32

P31

P30

P83/AN3

P82/AN2

P81/AN1

P80/AN0

P84/AN4

P85/AN5

C74

47p

C50

47p

C38

47p

C54

47p

L2 1.0

PWON

CPU5V

BEEP

DIM
TONE
DAST
TENC
OPT3
NOIS
OPT2
EXOE
OPT1
EXST
PTT
UNLK
PTTI
PLST
REM
CDEC
SCK
SDEC
SI
OV12
SO
RSSI
CIRQ
LVIN
CCS
TEMP
MIC
BATV
EPTT

KS0

KS1

R56

UNLK

KR0

CENC2

CENC1

CENC0

KR1

KR2

SCK

8
7
6
5

1
2
3
4

VCC
WP
SCL
SDA

A0
A1
A2

VSS

IC3
HN58X2464TI

R58

10k

R68

10k

R54
1k

R79
1k

OPT2
OPT1
OPT3

PWON

LCS
NMI

EXOE

EXST

R52

R50

POSW

DIM

NOIS

CIRQ

CCS

PTT

EPTT

AFVI

HANG

CDEC

SDEC

OV12

RSSI

LVIN

CLO

CLI

HANG

MA2S111

CP1

C35 0.1

TEMP
BATV

RES

R51 100k

SENC0
SENC1

R48
12k

R49
12k

MA77

C34

470p

R47

12k

C33
68p

C32

15p

X1
CR-520

R45
10

C31

22p

C78

0.001

R46
1M

OUT
VDD
VSS

R67

10k

C30

0.027

IC2
S-80942CNMC-G9C

LSO
LSCK

DUSE

CPU5V

DUSE

Q3
DTC144EU

C19

0.1

R29

18k

C82

47p

R28
4.7k

+
-

12
13

IC5
NJM12902V

TENC

C17

820p

C85

47p

C16

0.1

R27
47k

R26
47k

C15

0.018

R24
47k

R25

22k

R22 22k

R21 56k

R20 180k

C14

0.001

CENC0

CPU5V

CENC1

R65 1k

REM

CENC2

IC5
NJM12902V

TONE

BEEP

C24

68p

C69

47p

R39
68k

C23
0.0082

R38
68k

IC5
NJM12902V

C21

0.0056

C22

180p

R37
68k

SENC3

R33 22k

R36
68k

C20

0.0027

R35
68k

R34

22k

R32 47k

SENC2

SENC1

R31 100k

SENC0

R30 220k

C29

GND

V+

IC5
NJM12902V

C28

0.1

-
+

IC5
NJM12902V

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

CLO
AFO
PTT
MICE
MIC
GND
CLI

C81

0.001

R16 1k

L1 10

R76 1k

47p

0.001

C10

0.001

C11

47p

C12

0.001

R19
100k

MA8056

CLO

AFO

MIC

CLI

R18
100k

D2
MA8056

PTTI

MA8056

BEEP

KR2

KR1

KR0

KS1

KS0

POSW

R59

RV-150

C1 680p

C3 47p

C4 47p

C5 47p

C79 0.1

DS11
L2-0607TAY

C2 47p

C80 0.1

R78 47k

R60 100k

R75 10k

COM2

COM1

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

SEG23

SEG1

SEG2

SEG3

COM3
COM4
CPU5V
CPU5V

EXOE
LCS
LSCK
LSO

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

EXOE

LCS

LSCK

LSO

COM1

COM2

COM3

COM4

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32

COM1

COM2

COM3

COM4

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32

SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11

R14

10k

AFVI

CPU5V

C6 47p

C37 47p

LIGT1

Q1
2SC4116

R11

390

R12
2.7k

R74

10k

R73

10k

R86

100k

R85

100k

R87

100k

R88

100k

R89

100k

R84 100k

R82 100k

R83 100k

CPU5V

Q2
DTC114TU

Q5
DTC114TU

FRONT UNIT

DS1-DS9
SML-311YT

R7
180

DS3

DS2

DS1

LIGT2

DS6

DS5

DS4

R8
180

R9
470

DS9

DS8

DS7

to
mic
Jack

C77

0.047

R77 1.5k

R15 1k

1
2
3

C75

0.1

SENC3

SENC2

PLST

DAST

R55

BEEP

R57

C36

0.1

R23
47k

C83

47p

R90
390k

IC6
LC75834W

37
38
39
40
41
42
43
44
45

46
47
48

COM3

S24
S23
S22
S21
S20
S19
S18
S17
S16
S15
S14
S13

COM4
VDD
VLCD
VLCD1
VLCD2
VSS
OSC
INH
CE
CL
DI

P1/S1

P2/S2

P3/S3

P4/S4

P5/S5

P6/S6

P7/S7

P8/S8

S10

S11

S12

S25

S26

S27

S28

S29

S30

S31

S32

S33

S34

COM1

COM2

OPT2

RES

NMI

GND

CPU5V

P86

P87

OPT1

PWON

NMI

OPT1

PWON

GND

Dim ON: 6.2V
OFF: 7.2V

Dim OFF: 0V
ON : 5V

LIGHT ON: 5V
OFF: 0V

TX: 0V
RX: 4.9V

7.9V

19.7 MHz
2.1Vp-p

5.0V

CTCSS : 0V
DTCS : 5V

5.0V

MEASUREMENT CONDITIONS
VOLTMETER
Amplitude(Oscilloscope) : 100 MHz

11 - 1

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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