Icom VHF IC-F50 Service Manual Download

Page: 74 / 78

SECTION 11

VOLTAGE DIAGRAM

11 - 1

11-1 MAIN UNIT

Voltage line

NOTES :

Common line

TX line

RX line

VCC

S5V
+5V

C211

4.7

R102

22 k

R103 120 k

EP3

CR–763

R104

220 k

R105 330 k

C149 0.001

C155 47 P

R94 150 k

C140

0.1

C154 47 P

C153 47 P

C152 47 P

C151 0.1

C213

0.1

BAL

REF

LVIN

T5V

R108 10 k

C157 10 P

C156 0.001

C158

0.1

C159 0.001

CP1

R101

1 k

C141 0.001

R100 47 k

C137 0.01

D16

HVC350B

L25

10.5 nH

R98 2.2 k

C148

C132 0.001

C143 0.001

R96

3.9 k

2.7 k

C146 0.47

C138 0.001

C144 47 P

R90

470 k

C150 1

D17

HVC350B

L26

7.5 nH

C129 0.5 P

R86 10

R114 100 k

C203 0.001

C202

0.1

D21

HVC350B

C134

12 P

15 P

C136 0.1

C135 0.001

C114

5 P

12 P

C115

4 P

10 P

C122

4 P

12 P

R77 10 k

C111 47 P

MP7

C103 2 P

C104 0.001

C139

0.1

EP1

L22

22 nH

R74 100 k

C110 470 P

R73 100

R76 100

C109 0.001

C112 0.001

R71 47 k

L21 33 nH

R70 10

C108 0.01

R68 10 k

C106 47 P

R65 100

C99 0.001

R67 100

R66 15 k

R69 4.7 k

D15 MA2S077

L41

33 nH

R75 150 k

C105 0.001

C117 470 P

C121

5 P

8 P

C120 470 P

C119 0.01

D22

HVC350B

C133

12 P

15 P

C145 47 P

D18

MA368

C130 0.047

C147

R109

C208 7 P

C206 7 P

C209

0.001

R117

4.7 k

D37

MA2S111

R93

1 k

IC4

MB15A02PFV–1

UNLK

SCK

SO
PLST

S5V

R118

4.7 k

CLOCK

DATA

FOUT

FIN

GND

VCC

CSCOUN

OSCIN

NJM12902V

IC5

R5V

C161

10 P

Q34

2SC4116 BL

3.1

C163

4 P

C166

3 P

R39 47

C169

0.1

C173 0.001

R115 1.2 k

R116 680 k

C165

0.01

C167

0.1

R107 100 k

MOD

C162 56 P

C164 7 P

3 MULTI

OSCIN

OSCOUT

MIXOUT

VCC

IFIN

DEC

FILOUT

FILIIN

MIXIN

GND

N–REC

N–DET

RSSI

IFOUT

QUAD

AFOUT

R45

68 k

R43 47

1.1

R44

100 k

C168 0.1

FI2

ALFYM450=K

C69

470 P

C71 0.1

R40 150

C70 470 P

C66 0.001

C65 0.001

C63 47 P

NOIS RSSI

R46 470

C67 0.001

C75 10

R38 100 k

R36 1.5 k

R35 100

C59 0.001

C60 0.001

R37 470

R34 220 k

C56 22 P

R31 100

C57 0.001

C52 47 P

C51

0.001

R32

100

L11

15 nH

12 nH

C45

10 P

12 P

D10

HVC350B

R23

220

C43 0.001

C46 0.001

R21 220 k

C39

10 P

12 P

C36 0.001

R235 10 k

R50 100

R17 47

C37 0.001

L9 12 nH

R20 47 k

R19 82 k

C38 0.001

C339

2 P

0.5 P

C32 0.001

C333 47 P

R12

C33 0.001

C34 47 P

C25 9 P

18 nH

22 nH

C24

22 P

24 P

18 nH

22 nH

C21

22 P

24 P

C22 9 P

HVC350B

D5 MA2S077

C14

3 P

6 P

C367

4 P

5 P

C73 0.001

R10 1 k

120 k

C80

0.0047

R4 10 k

C72 47 P

TMUT

C78 0.001

C374 6.8

C76 0.01

C77 0.001

C15 0.001

RB706F–40

C74 0.001

C371 0.001

R3 47

D6 MA2S728

C17 68 P

L30

33 nH

RSS1

EXOE

C281 0.1

R193 100 k

C229

0.1

R120

470

C227 0.01

REF LV

T1 T2

BAL

CDCS

SCK

AST

MOD

R192 100 k

HVC350B

C27 0.001

C28 0.001

R14 10 k

R173 1.8 k

R207 220 k

D25

MA2S111

R16 100

R15 47 k

HVC350B

C42 0.001

3SK299 U73

0.9

MIX

C41

5 P

C40 0.3 P

3SK293

AMP

0.4

4.8

C35 0.1

4.4

C303

0.001

2.1

C302

10 P

R18

10 k

2SK1829

AGC

C30

7 P

R13 100 k

IC12

BU4094BCFV

EXOE
TMUT

MUT1
MUT2

R11

100 k

C23 2 P

C20

7 P

C19

0.001

LQW1608A22NG00

R9 270

C79 0.22

R8 470 k

APC

R6 100 k

10 k

4.9

D38 MA2S111

IC2

TC75S51F

2.3

1.8

R22 10 k

C49

5 P

L38

27 nH

R30 1 k

C53 0.01

C54 0.001

L12

33 nH

C364 6 P

C363 6 P

R25 4.7

C44

1 P

1.5 P

C48 22 P

C50 0.001

R29 150

C188 0.001

4.8

CSFT

AST

MRDF

MDIA

UNLK

TEMP

RSSI

CDEC

SDEC

NOIS

MTCK

MTDT

EXOE

EXSM

SCA

PLST

SCST

MSCK

MDIO

SCK

SIGNAL

CDCS

ONE

MIC

CSFT
DAST
MRDF
MDIA
UNLK
TEMP
RSSI
LVIN

CDEC
SDEC
NOIS
MTCK
MTDT
EXOE
EXSM
SCAT
PLST
SCST
MSCK
MDIO
SCK
SO
SIGNAL
CDCS
TONE

MIC

IF IC

IC1

TA31136FN

C61

100 P

C62

82 P

CDBC450CX24

4.6

2SC4215 O

C58

0.001

IF AMP

R33

150

FI1

FL–335

L44

4.1 nH

0.4–0.9–2TL

0.001

1SV307

1.7

0.001

R338

1 k

1.4
2.2

2.5 P

L2 14 nH

2 P

0.75

LPF

(CHASSIS)

L45

17.5 nH

L1 17.5 nH

C10

0.001

R97

1 k

L32

18 nH

C205

5 P

PLL

R95

1 k

Q17

2SC4116BL

C124

5 P

10 P

4.2

C127

6 P

9 P

R89 10 k

Q18

2SK880 Y

15.3MHz

1.2Vp–p

R106

82 k

R111

100 k

R113

390 k

S5V
R5V

R87

220 k

R85 6.8 k

RX VCO

C123

12 P

15 P

R84

6.8 k

R83

6.8 k

Q13

2SC4226 R25

R80

680

1 k

3.8

R79 6.8 k

R81 4.7

Q14

2SC4226 R25

R78

680

560

C113 0.3 P

C118

0.5 P

Q11

2SC5107 O

Q12

2SC5107 O

4.0

C102

5 P

Q10

2SC5107 O

D14

MA2S077

C98

10 P

C100

10 P

2SC5107 O

3.9

2.0

TX:+2.2dBm

RX:+4.2dBm

1.7

1.9

Q16

DTC144EU

Q15

XP1214

TX VCO

R5V

+5V

S5V

Q26

TPC6103

F1
0434003.NRP

ERBFE3R00U [OTHER]

T5V

C242 0.001

C375 10

R162 4.7 k

C231 0.01

R164 4.7 k

T5C

R5C

R170 470 k

C243 47 P

R169 100 k

C232 0.01

R166 2.2 k

C233

R165 10 k

C230 0.001

CTRL GND NB

VIN

OUT

C234

0.1

C235 0.01

C236

IC9

NJM2870

S5C

C237 0.01

C238 4.7

C239 0.1

1 2 3

R163 10 k

C241 0.001

C296 0.001

C295 0.001

R168 100 k

2403

C297 0.001

R167 270 k

R161 10 k

Q21

2SA1577Q

Q24

XP6501AB

Q22

2SA1577Q

Q25

DTA144EU

Q23

2SB1132Q

5.0

TEMP

R190 ER

TJ0EP473J

R191 100 k

C287 0.1

5.0

VCC

VCC
VCC

D12

MA2S111

IC7

EW–460

Q29

DTC144EU

C293 0.001

C298 0.001

C299 0.001

C300 0.001

C301 0.001

C294 0.001

C240 0.001

TONE

V+

GND

IC5

NJM12902V

CDEC

R186

470

SDEC

C226 0.001

C225

470 P

C224

4.7

IC5

NJM12902V

SIGNAL

IC5

NJM12902V

C223 0.1

R184 100 k

R183

22 k

R182

22 k

C222 0.01

C221 0.039

R181

22 k

R148 68 k

C180

0.1

R147

100 k

C220 0.022

R180 1 k

R154 120 k

C172

0.001

R152

560 k

R185 470 k

C92 12 P

RD01MUS1

C86

22 P

27 P

RD07MVS1

0.4–0.9–2TL

C93

8 P

10 P

T5V

VCC

T5V

VCC

2SC3356 R25

: The scrambler IC is installed type.

: The scrambler IC is not installed type.

: High-band.

: Low-band.

: Intrinsically safe version.

1.6

C372

7 P

8 P

C370

0.001

R62 12 k

L19

8.2 nH

12 nH

C97 0.001

R61 47

C107 0.001

FI3

NFM60R20T152

C366 0.001

C368 47 P

C81 0.01

C82 0.001

L17 14 nH

C369 0.001

C18 0.001

R53 10

C83

18 P

39 P

MP1

C13

22 P

18 P

C16

22 P

24 P

C12

12 P

only

C11

6 P

only

R1 2.7 k

1 P

4 P

only

C292 0.001

C291 47 P

3 P

5 P

R337 2.7 k

7 P

8 P

9 P

C365

3.5 P

2 P

R51 82 k

D39

RB706F–40

R52 100

R57

150

270

R59 4.7 k

C88 0.001

R58 33 k

C373 0.001

C91 470 P

R54 33 k

C84 0.001

R55 4.7 k

L20

15 nH

18 nH

VIN1

VOUT1

VOUT2

VIN2

VDD

CLK

VIN3

VOUT3

VOUT4

VIT4

VIN8

VOUT8

VOUT7

VIN7

GND

RESET

VDAREF

VIN6

VOUT6

VOUT5

VIN5

IC6

M62363FP–650C

C228

0.001

R119

10 k

+5V

C170

0.1

R153 150 k

R151 68 k

C171 4.7

R133

18 k

C266 0.0022

R129 47 k

R134 33 k

C267 0.001

R157 10 k

IC11 TC4W53FU

R155

10 k

C265

0.001

SPLATTER

IC5

NJM12902V

R130

2.2 k

R131

2.2 k

R132

47 k

C264 22

C261 1

C262 1

C263

0.001

IC10 AK2346

R121

12 k

R122

390 k

R135

1 M

R124

33 k

R141

33 k

C271

0.1

IC13

BU4066BCFV

C256

0.0022

R127

33 k

R128

33 k

C257

0.1

C258

0.1

R126

1 M

CR–765

C244 47 P

EP4

EP5

C253 180 P

C254 0.0012

C305 0.1

R194 10 k

R125 47 k

C255

0.1

C251 47 P

C252 0.0015

C259 22 P

SIGNAL

MTCK MTDT MDIO MADF

MSCK MDIA

C260 22 P

3.6864MHz

2.0Vp–p

AGNDIN

AGND

TXIN

TXINO

LIMLV

EXTLMIN

MOD

VSS

TCLK

TDATA

DI/O

RDF/FC

TEST

RXIN

RXINO

RXLPFO

RXAF

RXAFIN

EXPOUT

VDD

XIN

XOUT

DIR

SCLK

I/01

0/I1

0/I2

I/02

CONT2

CONT3

VSS

VDD

CONT1

CONT4

I/04

0/I4

0/I3

I/03

R195

10 k

only

C274

0.1

only

C275

only

C273

0.1

only

C276

only

Q27
DTA144EU

only

C277 1

only

IC14

FX214LG

only

C304

0.1

only

C290

0.1

C289 0.1

only

C279

27 P

only

R139 100 k

only

MIC

SCA

SCST SCK

C280

27 P

only

C288

0.1

only

16 17 18 19 20 21

9 8 7 6 5 4

TXOUT VBIAS

RXIN HFO HBMI LBMI

NC P/S NC NC NC NC

RXOUT

VSS

LD/LTH

SCIN

TXIN

LFO/P

VDD

X/CLK

SDIN

IC15

TC3W03FU

only

R144 1 M

only

VCC

GND

4.00MHz

5.0Vp–p

R145

only

CR–746

only

5.0

Scrambler ON

Scrambler OFF

VCON

GND

VCC

OUT

4.8

EXSM

SCK

R5C

T5C

S5C

STR

CLK

GND

V+

Q`S

5.0

L29

1.8 H

L27

1.8 H

L28

1.8 H

L43

1.8 H

C126

18 P

15 P

L421.8 H

L40

0.82 H

L23

0.82 H

L13

0.27 H

5 4 3

L330.82 H

L35

0.22 H

54104–3692

R123

82 k

L15

0.82 H

C116 0.001

R92

120 k

R206

470 k

S5V

+5V

R5V

Summary of Contents for VHF IC-F50

Page 1: ...SERVICE MANUAL VHF TRANSCEIVER ...

Page 2: ... 8810010120 Screw BO 2x8 SUS ZK IC F50 Chassis 10 pieces Addresses are provided on the inside back cover for your convenience 1 Make sure a problem is internal before disassembling the transceiver 2 DO NOT open the transceiver until the transceiver is disconnected from its power source 3 DO NOT force any of the variable components Turn them slowly and smoothly 4 DO NOT short any circuits or electr...

Page 3: ...PARATION 5 1 5 2 SOFTWARE ADJUSTMENTS 5 4 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 MAIN UNIT 9 1 9 2 FRONT UNIT 9 3 9 3 VR BOARD 9 5 9 4 CONNECTOR BOARD 9 6 SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGRAM 11 1 MAIN UNIT 11 1 11 2 RF UNIT 11 2 11 3 VR CONNECTOR BOARDS 11 3 Icom Icom Inc and are registered tr...

Page 4: ...Narrow Limiting charact of modulator 60 100 of maximum deviation Microphone impedance 2 2 kΩ RECEIVER Receive system Double conversion superheterodyne system Intermediate frequencies 1st IF 46 35 MHz 2nd IF 450 kHz Sensitivity 0 25 µV 119 dBm typical at 12 dB SINAD USA GEN 0 63 µV 111 dBm emf typical at 20 dB SINAD EUR Adjacent channel selectivity 70 dB min 75 dB typical for Wide and Middle 60 dB ...

Page 5: ...U4094BCFV D A converter IC6 M62363FP Power amplifier Q7 RD07MVS1 T5 Regulator Q21 2SA1577 S5 Regulator Q23 2SB1132 Q24 XP6501 Q25 DTA144EU R5 Regulator Q22 2SA1577 Scrambler IC IC14 FX214LG Depended on versions VCO circuit TOP VIEW BOTTOM VIEW TX RX switch D14 D15 MA2S077 EEPROM IC409 24LC64T Reset IC IC408 BD5242G Expander IC IC410 BU4094BCFV CPU IC401 HD6432264F01TF TOP VIEW BOTTOM VIEW Micropho...

Page 6: ... 4 Unscrew 2 screws G 5 Take off the chassis unit in the direction of the arrow 6 Remove the cable H from the chassis unit REMOVING THE FRONT UNIT 1 Unscrew 4 screws M 2 Unsolder 11 points N 3 Unplug the connector O from J402 on the Front unit 4 Take off the front unit in the direction of the arrow REMOVING THE MAIN UNIT 1 Unscrew 2 screws I 2 Unsolder 5 points J and remove the shield cover 3 Unsc...

Page 7: ...the attenuator R26 R28 at the 1st mixer circuit Q3 to pro duce a 46 35 MHz 1st IF signal The 1st IF signal is passed through a monolithic filter FI1 in order to obtain selection capability and to pass only the desired signals The filtered signal is applied to the 2nd IF circuit after being amplified at the 1st IF amplifier Q4 4 1 4 2ND IF AND DEMODULATOR CIRCUITS MAIN UNIT The 2nd mixer circuit co...

Page 8: ... When tone squelch is in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the AF signals even when noise squelch is open A portion of the DET AF signals from the FM IF IC IC1 pin 9 passes through the low pass filter IC5 pin 5 to remove AF voice signals and are then applied to the amplifier MAIN unit IC5 pin 10 The amplified signals are applied to ...

Page 9: ...e transmit power output level and converts it into DC voltage The output volt age is at a minimum level when the antenna impedance is matched at 50 Ω and is increased when it is mismatched The detected voltage is applied to the differential amplifier IC2 pin 3 and the T2 signal from the D A converter IC6 pin 14 controlled by the CPU FRONT unit IC401 is applied to the other input for reference When...

Page 10: ...er Q19 FM IF IC IC1 IF amplifier Q4 VCO switch Q15 Q16 1st mixer Q3 etc Transmit 5 V converted from the S5V line at the T5 regulator circuit Q21 The output voltage is supplied to the pre drive Q9 APC amplifier IC2 LINE VCC CPU5 S5V DESCRIPTION Same voltage as VCC line on the MAIN unit is applied to the FRONT unit via the J401 pins 1 2 FRONT unit The voltage is supplied to the PWR switch controller...

Page 11: ...ction and are then applied to the expander circuit to expand AF signals The signals pass through or bypass scrambler IC IC14 and are then applied to the analog switch IC13 pins 8 11 The signals are applied to the base band IC s amplifier section IC10 pins 19 20 and are then applied to the AF amplifier circuit 4 5 6 7 11 12 13 14 LEDR LEDT LIGT AFON DUSE MCON CSFT SPON Outputs RX LED control signal...

Page 12: ...F EXSM EXOE BEEP MTDT MTCK NOIS SDEC CDEC Output segment data to the LCD dis play Outputs serial data to the PLL IC MAIN unit IC6 pin 8 and D A con vertor MAIN unit IC6 pin 8 Outputs serial clock signal to the PLL IC MAIN unit IC4 pin 9 D A conver tor MAIN unit IC6 pin 7 etc I O port for the serial data signals from to the base band IC MAIN unit IC10 pin 11 Outputs clock signal to the base band IC...

Page 13: ...log switch IC13 pins 5 6 control signal to control the scrambler unit High While the scrambler function is ON Low While the microphone mute or AF mute is ON Outputs the analog switch IC13 pins 12 13 control signal to control the scrambler unit High While the scrambler function is ON Low While the microphone mute or AF mute is ON Outputs the FM PM modulation switching signal to the FM PM switch IC1...

Page 14: ...l mem ory data at the same time STARTING SOFTWARE ADJUSTMENT q Connect IC F60 F61 and PC with OPC 966 JIG CABLE w Turn the transceiver power ON e Boot up Windows and click the program group CS F50 ADJ in the Programs folder of the Start menu then CS F50 ADJ s window appears r Click Connect on the CS F50 s window then appears IC F60 F61 s up to date condition t Set or modify adjustment data as desi...

Page 15: ...ance Wide FM deviation Narrow FM deviation Wide NOTE 1 5 4 6 10 11 16 17 18 19 12 9 1 2 3 4 5 6 7 8 12 13 CTCSS DTCS deviation Squelch level Reference frequency Receive sensitivity automatically PLL lock voltage for RX automatically PLL lock voltage for TX automatically PLL lock voltage for RX manually PLL lock voltage for TX manually S meter Adjustment items 9 10 11 14 15 16 17 18 19 20 21 The ab...

Page 16: ...nerator OPC 966 JIG CABLE IC F50 F51 incl level converter circuit DB9 female plug to an RS 232C port RS 232C cable straight Personal computer to the antenna connector Attenuator 40 dB or 50 dB RF power meter 0 1 10 W 50 Ω Frequency counter Standard signal generator 0 1 µV to 32 mV 127 dBm to 17 dBm CAUTION DO NOT transmit while to SSG is connected to the antenna connector CONNECTION OPC 966 JIG CA...

Page 17: ... CH CH5 Transmitting Operating CH CH6 Transmitting Operating CH CH10 No audio applied to the MIC input Transmitting PLL LOCK VOLTAGE LV RX LVA LV TX LVA REFERENCE FREQUENCY REF OUTPUT POWER Power Hi Power L2 Power L1 FM DEVIATION MOD N Narrow MOD Ratio Middle MOD Ratio Wide MODULATION BALANCE BAL N Narrow BAL Ratio Middle BAL Ratio Wide CTCSS DTCS DEVIATION CTCS DTCS Soft ware Soft ware Top panel ...

Page 18: ... 94 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Set an SSG as Level 0 25 µV 119 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Operating CH CH9 Connect an SSG to the antenna con nector and set as Frequency 155 000 MHz Level 0 18 µV 122 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving RX SENSITIVITY BPF T1 BPF T2 S METER S METER SQUELCH LEVEL SQL Connect a SINAD meter with an 8 Ω load to the...

Page 19: ...04 X 100 kΩ T R423 7030005090 S RESISTOR ERJ2GEJ 104 X 100 kΩ T R426 7030005230 S RESISTOR ERJ2GEJ 334 X 330 kΩ T R427 7030005240 S RESISTOR ERJ2GEJ 473 X 47 kΩ T R428 7030005240 S RESISTOR ERJ2GEJ 473 X 47 kΩ T R429 7030005040 S RESISTOR ERJ2GEJ 472 X 4 7 kΩ T R430 7030007350 S RESISTOR ERJ2GEJ 393 X 39 kΩ T R432 7030005720 S RESISTOR ERJ2GEJ 563 X 56 kΩ T R433 7030005090 S RESISTOR ERJ2GEJ 104 X...

Page 20: ...1608 JB 1A 105K T T C475 4030017460 S CERAMIC ECJ0EB1E102K T C476 4030017460 S CERAMIC ECJ0EB1E102K T C477 4030017460 S CERAMIC ECJ0EB1E102K T C478 4030017460 S CERAMIC ECJ0EB1E102K T C479 4030017460 S CERAMIC ECJ0EB1E102K T C481 4030017460 S CERAMIC ECJ0EB1E102K T C482 4030017460 S CERAMIC ECJ0EB1E102K T C483 4030017460 S CERAMIC ECJ0EB1E102K T C484 4030017460 S CERAMIC ECJ0EB1E102K B C485 403001...

Page 21: ...0005090 S RESISTOR ERJ2GEJ 104 X 100 kΩ T R20 7030009270 S RESISTOR ERJ2GEJ 821 X 820 Ω T R21 7030005110 S RESISTOR ERJ2GEJ 224 X 220 kΩ T R22 7030005050 S RESISTOR ERJ2GEJ 103 X 10 kΩ T R23 7030005100 S RESISTOR ERJ2GEJ 154 X 150 kΩ T R24 7030005120 S RESISTOR ERJ2GEJ 102 X 1 kΩ B R25 7030005120 S RESISTOR ERJ2GEJ 102 X 1 kΩ B R26 7030005000 S RESISTOR ERJ2GEJ 471 X 470 Ω B R27 7030005000 S RESIS...

Page 22: ... CERAMIC ECJ0EC1H120J T C18 4030017380 S CERAMIC ECJ0EC1H050B T C19 4030017460 S CERAMIC ECJ0EB1E102K T C20 4030017430 S CERAMIC ECJ0EC1H101J T C22 4030017340 S CERAMIC ECJ0EC1H010B T C23 4030016930 S CERAMIC ECJ0EB1A104K T C24 4030017460 S CERAMIC ECJ0EB1E102K B S Surface mount 6 4 REF ORDER DESCRIPTION M NO NO MAIN UNIT C25 4030017580 S CERAMIC ECJ0EC1H060C T C26 4030017430 S CERAMIC ECJ0EC1H101...

Page 23: ...J0EB1E102K B C229 4030016930 S CERAMIC ECJ0EB1A104K T C230 4030017460 S CERAMIC ECJ0EB1E102K T C231 4030016790 S CERAMIC ECJ0EB1C103K B C232 4030016790 S CERAMIC ECJ0EB1C103K B C233 4550006350 S TANTALUM TEESVB2 1A 226M8L B C234 4030017330 S CERAMIC ECJ0EF1C104Z B S Surface mount 6 5 REF ORDER DESCRIPTION M NO NO MAIN UNIT C235 4030016790 S CERAMIC ECJ0EB1C103K B C236 4510004630 S ELECTROLYTIC ECE...

Page 24: ...0009510 Screw B0 2 x 4 NI ZU BT 4 MP426 8930061200 2681 mic rubber 1 MP429 8930061910 Sponge HL 1 J1 6910014700 2600 ant connector 1 MP1 8010019290 2681 chassis 1 MP2 8950005511 2403 contact spring 1 1 MP3 8930058561 2403 A main seal 1 1 MP4 8930059800 2600 pet sheet 1 MP5 8930059830 2600 sheet 1 MP6 8930051500 O ring AB 1 MP7 8930055870 O ring AO 1 MP8 8930058550 O ring AS 1 MP9 8830001600 Screw ...

Page 25: ...P426 F W401 F MP12 C MP12 C MP12 C MP12 C MP12 C MP4 M MP408 F SP401 F DS401 F MP410 F R601 V MP424 F FRONT Unit MAIN Unit VR BOARD EP402 F MP429 F MP407 F MP421 F MP409 F MP407 F CONNECTOR BOARD MP419 F MP406 F MP10 C MP15 C MP6 C MP401 F MP14 C MP1 C MP13 C MP8 C MP2 C MP5 C MP4 C MP9 C MP7 C MP3 C MP424 F J1 C 149 8 5 29 32 110 2 4 11 32 31 4 2 7 32 Unit mm inch 62 5 4 15 32 56 2 7 32 36 4 1 7 ...

Page 26: ...E C B 2SB1132 Q Symbol BAQ B E C 2SK1829 Symbol K1 3SK293 Symbol UF TPC6103 Symbol S3C 1 2 3 4 5 6 B C E DTC144EU Symbol 26 B E C E C B 2SC4116 BL Symbol LL E C B 2SC4116 Y Symbol LY E C B 2SK880 Y Symbol XY 2SC5110 O Symbol MGO E C B E C B S D G E1 E2 B2 C1 B1 C2 E C B E B1 E1 B2 C1 C2 E1 B1 B2 C2 C1 E2 E1 B1 C2 C1 B2 E2 G S S D G1 G2 S D D S G2 G1 G G S D S D Tr1 Tr2 HVC375B Symbol B8 HVC350B Sy...

Page 27: ...19 C22 C25 C19 C17 C26 C20 R15 R175 R183 R184 R185 C225 R147 R120 R196 C229 R157 R110 C185 R103 C213 R113 C138 R95 R96 L27 R7 C100 R10 C91 R55 R54 C94 C89 C85 C237 C307 C296 C297 C293 C88 R57 C92 R71 C107 R70 C110 R77 R59 C58 R53 C84 R3 C77 R9 C73 R88 R75 C103 C109 C241 C205 C207 C105 R76 C80 R105 EP4 C306 R111 R124 R36 R126 R135 R193 R192 L42 IC17 IC10 J1 IC6 C150 IC5 FI2 X1 L43 L28 C201 D18 C171...

Page 28: ...C4 L4 C3 C13 L20 L17 C302 L2 D5 L9 MP5 FI1 L5 L6 C9 C72 C74 C93 R65 R81 R79 C114 R85 C116 C117 C115 C113 C118 R83 R82 R84 C194 C192 C129 C133 C134 C191 C127 C190 C102 R72 C122 C279 R163 Q22 C137 D12 C121 C195 C120 R78 C119 C124 C123 C126 C193 C56 R35 R48 C58 R33 R38 C65 C61 R102 C66 R119 C228 R125 C199 R39 C67 R40 C169 C220 C226 C294 C255 R43 R162 C108 R67 C291 C7 C6 C10 C82 C235 C239 C234 R166 C1...

Page 29: ...411 R422 R421 C487 R482 R440 R456 R455 R487 C467 R500 C420 C479 R417 C463 R403 R409 R484 R483 C402 R485 R411 R497 C421 R427 C499 C444 R470 R428 R511 C498 C405 C495 C404 R410 R408 R406 C406 R514 R405 C407 R407 C492 R508 C489 C493 C482 C481 R496 R509 C414 C492 C491 C431 R436 C435 C434 C496 W402 W401 IC405 IC403 Q402 Q407 MP427 Q401 J402 S401 C427 D406 Q409 IC401 Q408 X401 IC408 D402 Q412 D404 Q411 C...

Page 30: ... BOTTOM VIEW R446 R458 R444 R442 C485 C500 R434 R445 C433 C484 R443 C426 R457 Q413 Q406 Q403 DS404 Q404 MC401 DS402 DS403 Q405 C437 DS406 DS405 9 4 ...

Page 31: ...R601 VHF B6034B 9 3 VR BOARD TOP VIEW BOTTOM VIEW 9 5 ...

Page 32: ...TOR BOARD TOP VIEW D704 R 7 0 1 MP701 9 1 PTT MIC TXD RXD RESET MICE OPTV VCC AFO BOTTOM VIEW C704 D705 C703 C702 C701 D703 D702 D701 EP704 B6035C EP703 EP702 EP701 EP705 PTT MIC CLO CLI RES GND OPTV AFO VCC 9 6 ...

Page 33: ...LG IC13 BU4066 DS406 CL 165HR FRONT UNIT MAIN UNIT G R DS404_405 SML A12MT LED CTRL MIC MUTE PTT DET IC405 TA7368F PWR CTRL AF AMP AF VOL BEEP TONE SPON SPON SP1 MC1 PTT CONNECTOR AFO AFO MIC PTT VCC RESET OPTV RESET OPTV LCD NOTES Contorol line Common line TX line RX line DATA lime Voltage line CLI CLO ANT SW PWR DET PWR AMP APC AMP MUTE SW POWER SW AF MUTE DRIVE AMP D2 D25 MA2S111 RB706F Q7 RD07...

Page 34: ...0 001 R162 4 7 k C231 0 01 R164 4 7 k C232 0 01 R163 10 k R166 2 2 k R165 10 k VCC 5V S5V S5V VCC VCC 5V C230 0 001 C307 0 1 C237 00 1 C238 4 7 C239 0 1 R191 100 k C287 0 1 C224 4 7 R184 100 k R154 120 k R148 68 k C240 0 001 C220 0 022 C180 0 1 R157 10 k C266 0 0022 R134 33 k R129 47 k C269 0 001 R125 47 k C255 0 1 C290 0 1 C304 0 1 C288 0 1 EP5 C252 0 0015 SIGNAL MIC R139 100 k C279 27 P C280 27 ...

Page 35: ...Q6 Q7 Q8 Q S QS CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 MD CPU5 CPU5 R457 470 R458 1 k R455 100 4 8 0 Backlight ON Backlight OFF RES CLI CLO MD PTT CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 MCON D403 MA2S111 R403 1 k D401 MA2S111 MC401 C401 0 001 R401 22 k C404 0 001 1 2 3 4 8 7 6 5 R402 33 k C497 0 01 C423 0 1 R430 39 k C425 470 P C437 1 R434 470 C496 33 C435 33 R442 470 k R443 470 k R444 100 k 14 13 R432 56...

Page 36: ... 0 001 D701 AVR M1005 C080MTABB D702 AVR M1005 C080MTABB C704 0 001 D705 AVR M1005 C080MTABB D703 AVR M1005 C080MTABB D704 AVR M1005 C080MTABB C702 0 001 C703 0 001 MIC PTT EP702 EP701 EP703 EP704 1 2 3 4 5 6 7 8 9 OPTV RESET RXD TXD MP701 EP705 AFO OPTV GND RES CLI CLO MIC PTT AFO PTT MIC TXD RXD RESET MICE OPTV VCC To the FRONT UNIT Voltage line NOTES TX line RX line 11 3 ...

Page 37: ......

Page 38: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14007IZ C1 2003 Icom Inc ...

Page 39: ...SERVICE MANUAL UHF TRANSCEIVER ...

Page 40: ...cted from its power source 3 DO NOT force any of the variable components Turn them slowly and smoothly 4 DO NOT short any circuits or electronic parts An insulated turning tool MUST be used for all adjustments 5 DO NOT keep power ON for a long time when the transceiver is defective 6 DO NOT transmit power into a signal generator or a sweep generator 7 ALWAYS connect a 30 dB to 40 dB attenuator bet...

Page 41: ...ARATION 5 1 5 2 SOFTWARE ADJUSTMENTS 5 4 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 MAIN UNIT 9 1 9 2 FRONT UNIT 9 3 9 3 VR BOARD 9 5 9 4 CONNECTOR BOARD 9 6 SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGRAM 11 1 MAIN UNIT 11 1 11 2 FRONT UNIT 11 2 11 3 VR CONNECTOR BOARDS 11 3 Icom Icom Inc and are registered ...

Page 42: ...e 40 dB min 50 dB typical for Narrow Limiting charact of modulator 60 100 of maximum deviation Microphone impedance 2 2 kΩ RECEIVER Receive system Double conversion superheterodyne system Intermediate frequencies 1st IF 46 35 MHz 2nd IF 450 kHz Sensitivity 0 25 µV 119 dBm typical at 12 dB SINAD USA GEN 0 63 µV 111 dBm emf typical at 20 dB SINAD EUR Adjacent channel selectivity 70 dB min 75 dB typi...

Page 43: ...U4094BCFV D A converter IC6 M62363FP Power amplifier Q7 RD07MVS1 T5 Regulator Q21 2SA1577 Q S5 Regulator Q23 2SB1132 Q Q24 XP6501 AB Q25 DTA144EU R5 Regulator Q22 2SA1577 Q Scrambler IC IC14 FX214LG Depended on versions VCO circuit TOP VIEW BOTTOM VIEW TX RX switch D14 D15 MA2S077 EEPROM IC409 24LC64T Reset IC IC408 BD5242G Expander IC IC410 BU4094BCFV CPU IC401 HD6432264F01TF TOP VIEW BOTTOM VIEW...

Page 44: ... 4 Unscrew 2 screws G 5 Take off the chassis unit in the direction of the arrow 6 Remove the cable H from the chassis unit REMOVING THE FRONT UNIT 1 Unscrew 4 screws M 2 Unsolder 11 points N 3 Unplug the connector O from J402 on the Front unit 4 Take off the front unit in the direction of the arrow REMOVING THE MAIN UNIT 1 Unscrew 1 screw I 2 Unsolder 5 points J and remove the shield cover 3 Unscr...

Page 45: ...a the low pass filter L38 C363 C364 at the 1st mixer circuit Q3 to produce a 46 35 MHz 1st IF signal The 1st IF signal is passed through a monolithic filter FI1 in order to obtain selection capability and to pass only the desired signals The filtered signal is applied to the 2nd IF circuit after being amplified at the 1st IF amplifier Q4 4 1 4 2ND IF AND DEMODULATOR CIRCUITS MAIN UNIT The 2nd mixe...

Page 46: ...lch circuit detects AF signals and opens the squelch only when receiving a signal containing a matching subaudible tone CTCSS or DTCS When tone squelch is in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the AF signals even when noise squelch is open A portion of the DET AF signals from the FM IF IC IC1 pin 9 passes through the low pass filter ...

Page 47: ...N UNIT The APC circuit IC2 D1 D39 protects the drive and power amplifiers from excessive current drive and selects output power of HIGH LOW2 or LOW1 The power detector circuit D1 D39 detects the transmit power output level and converts it into DC voltage The out put voltage is at a minimum level when the antenna imped ance is matched at 50 Ω and is increased when it is mis matched The detected vol...

Page 48: ...Q15 Q16 1st mixer Q3 etc Transmit 5 V converted from the S5V line at the T5 regulator circuit Q21 The output voltage is supplied to the YGR amplifier Q5 Q9 drive amplifier Q8 APC amplifier IC2 etc LINE VCC CPU5 S5V DESCRIPTION Same voltage as VCC line on the MAIN unit is applied to the FRONT unit via the J401 pins 1 2 FRONT unit The voltage is supplied to the PWR switch controller Q401 Q402 Same v...

Page 49: ...ction and are then applied to the expander circuit to expand AF signals The signals pass through or bypass scrambler IC IC14 and are then applied to the analog switch IC13 pins 8 11 The signals are applied to the base band IC s amplifier section IC10 pins 19 20 and are then applied to the AF amplifier circuit 4 5 6 7 11 12 13 14 LEDR LEDT LIGT AFON DUSE MCON CSFT SPON Outputs RX LED control signal...

Page 50: ...XSF EXSM EXOE BEEP MTDT MTCK NOIS SDEC CDEC Output segment data to the LCD dis play Outputs serial data to the PLL IC MAIN unit IC4 pin 10 and D A con vertor MAIN unit IC6 pin 8 Outputs serial clock signal to the PLL IC MAIN unit IC4 pin 9 D A conver tor MAIN unit IC6 pin 7 etc I O port for the serial data signals from to the base band IC MAIN unit IC10 pin 11 Outputs clock signal to the base band...

Page 51: ...h IC13 pins 5 6 control signal to control the scrambler unit High While the scrambler function is ON Low While the microphone mute or AF mute is ON Outputs the analog switch IC13 pins 12 13 control signal to control the scrambler unit High While the scrambler function is ON Low While the microphone mute or AF mute is ON Outputs the FM PM modulation switching signal to the FM PM switch IC11 pin 5 H...

Page 52: ...l mem ory data at the same time STARTING SOFTWARE ADJUSTMENT q Connect IC F60 F61 and PC with OPC 966 JIG CABLE w Turn the transceiver power ON e Boot up Windows and click the program group CS F50 ADJ in the Programs folder of the Start menu then CS F50 ADJ s window appears r Click Connect on the CS F50 s window then appears IC F60 F61 s up to date condition t Set or modify adjustment data as desi...

Page 53: ...n balance Narrow FM deviation balance Wide FM deviation Narrow FM deviation Wide NOTE 1 5 4 6 10 11 16 17 18 19 12 9 1 2 3 4 5 6 7 8 12 13 CTCSS DTCS deviation Squelch level Reference frequency Receive sensitivity automatically PLL lock voltage for RX automatically PLL lock voltage for TX automatically PLL lock voltage for RX manually PLL lock voltage for TX manually S meter Adjustment items 9 10 ...

Page 54: ...nerator OPC 966 JIG CABLE IC F60 F61 incl level converter circuit DB9 female plug to an RS 232C port RS 232C cable straight Personal computer to the antenna connector Attenuator 40 dB or 50 dB RF power meter 0 1 10 W 50 Ω Frequency counter Standard signal generator 0 1 µV to 32 mV 127 dBm to 17 dBm CAUTION DO NOT transmit while to SSG is connected to the antenna connector CONNECTION OPC 966 JIG CA...

Page 55: ...er meter or 50 Ω dummy load to the antenna connector Transmitting Operating CH CH1 Transmitting Operating CH CH2 Transmitting Operating CH CH3 Transmitting Operating CH CH4 Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 Connect the audio generator to the multi connector through the JIG cable OPC 966 and set as 1 0 kHz 150 mVrms Transmitting Operating CH CH5 Transmi...

Page 56: ...ng Operating CH CH8 Transmitting Operating CH CH9 Transmitting Operating CH CH10 No audio applied to the MIC input Transmitting MODULATION BALANCE BAL N Narrow BAL Ratio Middle BAL Ratio Wide CTCSS DTCS DEVIATION CTCS DTCS Top panel Top panel Connect an FM deviation meter with an oscilloscope to the antenna connector through an attenuator Connect an FM deviation meter to the antenna connec tor thr...

Page 57: ...n 1 kHz Deviation 3 5 kHz Receiving Set an SSG as Level 0 25 µV 119 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Operating CH CH11 Connect an SSG to the antenna connector and set as Frequency 470 000 MHz L 520 000 MHz H Level 0 2 µV 121 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving RX SENSITIVITY BPF T1 BPF T2 S METER S METER SQUELCH LEVEL SQL MAIN Front panel Connect a SINAD meter with an ...

Page 58: ...J 223 X 22 kΩ T R464 7030005220 S RESISTOR ERJ2GEJ 223 X 22 kΩ T R465 7030005050 S RESISTOR ERJ2GEJ 103 X 10 kΩ T R466 7030005240 S RESISTOR ERJ2GEJ 473 X 47 kΩ T R467 7030005240 S RESISTOR ERJ2GEJ 473 X 47 kΩ T R468 7030005240 S RESISTOR ERJ2GEJ 473 X 47 kΩ T R469 7030005040 S RESISTOR ERJ2GEJ 472 X 4 7 kΩ T R470 7030005240 S RESISTOR ERJ2GEJ 473 X 47 kΩ T R471 7030005110 S RESISTOR ERJ2GEJ 224 X...

Page 59: ... safe version MAIN UNIT IC1 1110003200 S IC TA31136FN EL B IC2 1130008560 S IC TC75S51F TE85L T IC4 1140005990 S IC MB15A02PFV1 G BND ER B IC5 1110005340 S IC NJM12902V TE1 T IC6 1190000350 S IC M62363FP 650C T IC7 1190001860 S IC EW 460 FT B IC9 1110005350 S IC NJM2870F05 TE1 T IC10 1110006220 S IC AK2346 E2 T IC11 1130006220 S IC TC4W53FU TE12L T IC12 1130007570 S IC BU4094BCFV E2 T IC13 1130008...

Page 60: ... X 47 kΩ B R73 7030004980 S RESISTOR ERJ2GEJ 101 X 100 Ω B R74 7030005090 S RESISTOR ERJ2GEJ 104 X 100 kΩ B R75 7030005100 S RESISTOR ERJ2GEJ 154 X 150 kΩ B R76 7030004980 S RESISTOR ERJ2GEJ 101 X 100 Ω B R77 7030005050 S RESISTOR ERJ2GEJ 103 X 10 kΩ T R78 7030005010 S RESISTOR ERJ2GEJ 681 X 680 Ω C T 7030008370 S RESISTOR ERJ2GEJ 561 X 560 Ω D T R79 7030006020 S RESISTOR RR0510P 682 D 6 8 kΩ B R8...

Page 61: ... S CERAMIC ECJ0EB1C103K B C54 4030017460 S CERAMIC ECJ0EB1E102K B M Mounted side T Mounted on the Top side B Mounted on the Bottom side S Surface mount C56 4030017400 S CERAMIC ECJ0EC1H220J B C57 4030017460 S CERAMIC ECJ0EB1E102K B C58 4030017460 S CERAMIC ECJ0EB1E102K B C59 4030017460 S CERAMIC ECJ0EB1E102K B C60 4030017460 S CERAMIC ECJ0EB1E102K B C61 4030017430 S CERAMIC ECJ0EC1H101J B C62 4030...

Page 62: ...60 S CERAMIC ECJ0EB1H222K T C257 4030016930 S CERAMIC ECJ0EB1A104K T C258 4030016930 S CERAMIC ECJ0EB1A104K T C259 4030017400 S CERAMIC ECJ0EC1H220J B C260 4030017400 S CERAMIC ECJ0EC1H220J B C261 4550000460 S TANTALUM TEESVA 1C 105M8L B C262 4550000460 S TANTALUM TEESVA 1C 105M8L B C263 4030017460 S CERAMIC ECJ0EB1E102K T C264 4550006350 S TANTALUM TEESVB2 1A 226M8L B C265 4030017460 S CERAMIC EC...

Page 63: ...30017460 S CERAMIC ECJ0EB1E102K B C704 4030017460 S CERAMIC ECJ0EB1E102K B EP701 6910012350 S BEAD MMZ1608Y 102BT B EP702 6910012350 S BEAD MMZ1608Y 102BT B EP703 6910012350 S BEAD MMZ1608Y 102BT B EP704 6910012350 S BEAD MMZ1608Y 102BT B EP705 6910012350 S BEAD MMZ1608Y 102BT B EP706 0910056523 PCB B 6035C J1 6910015630 CONNECTOR 2682 ANT CONNECTOR M Mounted side T Mounted on the Top side B Mount...

Page 64: ...4 8930055761 2403 release plate 1 MP415 8930056540 Spring AH 2 MP417 8930055730 2403 connector seal 1 MP418 8930055890 2403 connector sheet 1 MP419 8930056430 2403 9 pin sheet 1 MP421 8610011380 Knob N 313 1 MP423 8930061110 2681 mic tape 1 MP424 8810009510 Screw B0 2 x 4 NI ZU BT 4 MP426 8930061200 2681 mic rubber 1 MP429 8930062240 Sponge HM 1 J1 6910015630 2682 ant connector 1 MP1 8010019290 26...

Page 65: ...S401 F MP410 F R601 V MP424 F FRONT Unit MAIN Unit VR BOARD EP402 F MP429 F MP405 F MP421 F MP409 F MP407 F CONNECTOR BOARD MP419 F MP702 C MP406 F MP10 C MP10 C MP15 C MP6 C MP401 F MP14 C MP1 C MP13 C MP8 C MP2 C MP5 C MP4 C MP9 C MP7 C MP3 C MP424 F J1 C 174 6 27 32 110 2 4 11 32 31 4 2 7 32 Unit mm inch 62 5 4 15 32 56 2 7 32 36 4 1 7 16 50 45 1 31 32 97 7 3 27 32 NOTE Loop the wires once as s...

Page 66: ... Symbol R25 B E C E C B 2SB1132 Q Symbol BAQ B E C 2SK1829 Symbol K1 3SK293 Symbol UF TPC6103 Symbol S3C 1 2 3 6 5 4 B C E DTC144EU Symbol 26 B E C E C B 2SC4116 BL Symbol LL E C B 2SC3356 R25 Symbol R25 E C B 2SC4116 Y Symbol LY E C B 2SK880 Y Symbol XY E C B S D G E1 E2 B2 C1 B1 C2 B1 E1 B2 C1 C2 E1 B1 B2 C2 C1 E2 E1 B1 C2 C1 B2 E2 G S S D G1 G2 S D G G S D S D Tr1 Tr2 G S D G1 G2 S D HVC350B Sy...

Page 67: ...EP4 R104 R92 C143 C110 C109 R113 R80 R78 EP1 C368 R54 C83 R77 C111 C206 R111 R87 R109 C208 C209 C149 C155 C271 C290 C257 R135 C263 C281 R192 R193 C304 R195 C258 C127 R126 C253 C254 C256 R123 C128 R95 C145 R96 R90 C173 R183 R151 R157 C229 C106 R120 R121 R134 C266 C251 C130 R59 C88 R58 C86 C84 R9 R8 R5 C34 C35 R18 R19 C339 C39 R173 R21 R23 C46 C42 C223 R182 C43 C45 R15 C25 C22 C33 R12 R4 R2 C74 R338...

Page 68: ...156 C161 C260 R131 C287 R164 C122 R84 R85 C127 R31 C57 C134 C104 R74 R76 R68 C291 R165 C235 C28 C38 R17 C37 R20 R25 C41 C44 C364 C7 C10 C82 R166 C234 C14 R52 C36 C49 C48 C50 R29 C303 C363 C112 C114 C115 C129 C116 C117 C119 C203 C121 C123 C242 R191 R190 C151 R93 R100 C141 C162 C164 C180 R148 C59 R38 C65 C255 R45 R44 C169 C67 C167 C168 R43 C228 C60 R37 C61 R102 R33 C58 R129 C267 C140 R115 R116 R132 ...

Page 69: ...23 C411 R422 R421 C487 R482 R440 R456 R455 R487 C467 R500 C420 C479 R417 C463 R403 R409 R484 R483 C402 R485 R411 R497 C421 R427 C499 C444 R470 R428 R511 C498 C405 C495 C404 R410 R408 R406 C406 R514 R405 C407 R407 C492 R508 C489 C493 C482 C481 R496 R509 C414 C492 C491 C431 R436 C435 C434 C496 W402 W401 IC405 IC403 Q402 Q407 MP427 Q401 J402 S401 C427 D406 Q409 IC401 Q408 X401 IC408 D402 Q412 D404 Q4...

Page 70: ... BOTTOM VIEW R446 R458 R444 R442 C485 C500 R434 R445 C433 C484 R443 C426 R457 Q413 Q406 Q403 DS404 Q404 MC401 DS402 DS403 Q405 C437 DS406 DS405 9 4 ...

Page 71: ...R601 B6034B 9 3 VR BOARD TOP VIEW BOTTOM VIEW 9 5 ...

Page 72: ...TOR BOARD TOP VIEW D704 R 7 0 1 MP701 9 1 PTT MIC TXD RXD RESET MICE OPTV VCC AFO BOTTOM VIEW C704 D705 C703 C702 C701 D703 D702 D701 EP704 B6035C EP703 EP702 EP701 EP705 PTT MIC CLO CLI RES GND OPTV AFO VCC 9 6 ...

Page 73: ...77 IC14 FX214LG IC13 BU4066 DS406 CL 165HR FRONT UNIT MAIN UNIT G R DS404 DS405 SML A12MT 2 LED CTRL MIC MUTE PTT DET IC405 TA7368F PWR CTRL AF AMP AF VOL BEEP TONE SPON SPON SP1 MC1 PTT CONNECTOR AFO AFO MIC PTT VCC RESET RESET DETECT DETECT LCD NOTES Contorol line Common line TX line RX line DATA lime Voltage line CLI CLO ANT SW LPF PWR AMP APC AMP PWR DET MUTE SW TMUT D38 MA2S111 POWER SW AF MU...

Page 74: ...7 220 k R85 6 8 k RX VCO C123 12 P D 15 P C R84 6 8 k R83 6 8 k Q13 2SC4226 R25 R80 680 D 1 k c 3 8 R79 6 8 k R81 4 7 Q14 2SC4226 R25 R78 680 C 560 D C113 0 3 P C118 0 5 P Q11 2SC5107 O Q12 2SC5107 O 4 0 C102 5 P Q10 2SC5107 O D14 MA2S077 C98 10 P C100 10 P Q9 2SC5107 O 3 9 2 0 0 TX 2 2dBm RX 4 2dBm 1 7 0 0 1 9 5 4 3 2 Q16 DTC144EU 1 Q15 XP1214 TX VCO R5V 5V 5V S5V S5V Q26 TPC6103 1 2 F1 0434003 N...

Page 75: ...8 Q S QS CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 MD CPU5 CPU5 R457 470 R458 1 k R455 470 4 8 0 Backlight ON Backlight OFF RES CLI CLO MD PTT CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 CPU5 MCON D403 MA2S111 R403 1 k D401 MA2S111 MC401 C401 0 001 R401 22 k C404 0 001 1 2 3 4 8 7 6 5 R402 33 k C497 0 01 C423 0 1 R430 39 k C425 470 P C437 1 R434 470 C496 33 C435 33 R442 470 k R443 470 k R444 100 k 14 13 R432 56 k R446...

Page 76: ... 0 001 D701 AVR M1005 C080MTABB D702 AVR M1005 C080MTABB C704 0 001 D705 AVR M1005 C080MTABB D703 AVR M1005 C080MTABB D704 AVR M1005 C080MTABB C702 0 001 C703 0 001 MIC PTT EP702 EP701 EP703 EP704 1 2 3 4 5 6 7 8 9 OPTV RESET RXD TXD MP701 EP705 AFO OPTV GND RES CLI CLO MIC PTT AFO PTT MIC TXD RXD RESET MICE OPTV VCC To the FRONT UNIT Voltage line NOTES TX line RX line 11 3 ...

Page 77: ......

Page 78: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14010IZ C1 2004 Icom Inc ...

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