Icom IC-F50, IC-F51 service manual Section Block Diagram, Cpu

Page 33

 

SECTION 10

BLOCK DIAGRAM

 

 

 

 

S5V

 

 

 

Q18:

Q17:

 

 

 

2SK880

2SC4116

 

 

 

LVIN

RIPPLE

 

 

 

BUFF

FIL

 

 

 

 

 

 

X2

 

 

 

IC16:

CR–763

 

 

 

NJM12904

15.3 MHz

 

 

BAL

 

 

 

 

REF

BUFF

TCXO

LOOP

LV

FIL

IC17:

 

 

 

 

 

 

TC4S66F

 

 

 

 

FAST

 

Q19:

 

 

SW

 

2SC4116

IC4:

 

 

 

 

 

 

 

 

MB15A02

 

 

D22:

HVC375B

LV

ADJ

D21:

HVC375B

LV

ADJ

Q15: XP1214

Q16: DTC144EU

Q14: 2SC4226

D19,20: HVC376BVCO SW

RX VCO

Q12:

2SC5107

BUFF

TX VCO

Q11:

Q13:2SC5107 2SC4226

R5V

Q10:D14,D15:

2SC5107MA2S077

TX/RX

BUFF

SW

136–174MHz

MAIN UNIT

 

 

 

 

 

Q9:

Q8:

Q7:

D2:

D2: 1SV307

 

2SC5110

RD01MUS1

RD07MVS1

RB706F

D5: 1SV307

 

PRE

DRIVE

PWR

PWR

ANT

LPF

DRIVE

AMP

AMP

DET

SW

 

Q1:

 

 

IC2:

 

D25:

2SK1829

 

 

TA75S01F

 

MA2S111

X 3

 

PLL

 

LPF

 

IC

 

 

 

 

 

IC16:

NJM12904

BUFF

D16,17: HVC376B

D18:

FM 1SV239

MOD

BUFF

ATT

1st LO=

 

182.35 MHz–220.35 MHz

RSSI

GATE

 

APC

 

MUTE

 

CTRL

 

AMP

T2

SW

2nd LO

IF IC

 

 

=45.9 MHz

 

 

BPF

 

 

 

IC1:TA31136FN

 

 

 

FI2

 

 

 

X1

 

 

 

CERAMIC

RSSI

NOIS

 

BPF

SQIN

CDBC450CX24

 

 

 

ALFYM450F=K

 

 

DET

450 kHz

 

 

 

LVA, T1, T2

 

 

MOD

 

 

 

D/A

 

 

 

 

DET

LPF

 

 

AMP

 

IC6:

 

 

 

M62363FP

IC11:

 

 

 

TC4W53FU

 

 

MOD

LVA

SCRM

HPF

BLER

Q4:

FI1:

 

Q3:

D10:

2SC4215

FL–335

1st IF=

HVC350B

IF

XTAL

46.35 MHz

3SK299

 

 

 

BPF

AMP

BPF

 

 

 

 

 

 

 

 

1st Mixer

 

 

IC13:

 

 

 

BU4066

 

 

EXPANDER

AMP

IC14:

IC15:

 

 

 

 

FX214LG

TC3W03FU

 

ANALOG

SCRM

1/4

 

SW

BLER

 

 

D9:

 

D4:

D8:

 

TMUT

HVC350B

 

HVC385B

HVC375B

 

 

 

BPF

RF

BPF

BPF

 

 

 

AMP

Q26:

 

 

 

 

 

 

 

 

Q2:

 

 

TCP6103

 

 

 

3SK293

 

 

VCC

F1

 

 

 

 

 

1

2

T2

 

 

 

POWER

 

 

T1

SW

 

 

T2

 

T1

T2

 

BATTERY 1

BT1

 

IC406:

IC403:

IC405:

 

 

 

 

TC7W66FK

NJM12902

TA7368F

 

 

 

SIGNAL

 

 

AF VOL

 

 

 

 

 

 

 

 

 

 

AF

LPF

AF

AFO

SP1

 

MUTE

AMP

 

 

 

 

 

 

TONE

BEEP

 

 

 

 

 

 

 

Q401: 2SB1132

 

 

 

 

 

Q402: XP6501

 

 

 

 

 

PWR

 

Q403: 2SC4116

 

 

 

AF

Q404: RSR025N03

 

 

 

CTRL

MUTE

Q405: RSR025N03

 

 

 

 

 

W406: DTC144EU

X3

 

 

SPON

SPON

 

 

 

 

 

 

 

FM/PM

 

 

 

LPF

LIMIT

 

 

 

 

 

 

SW

 

 

 

 

AMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CTCSS/DTCS

 

 

 

 

 

 

 

 

 

IC5:

 

 

 

 

 

 

 

 

 

 

NJM12902

 

 

 

MSK

BPF

 

 

 

 

 

 

 

 

 

 

 

 

Modulator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOD

 

 

 

 

LPF

 

 

 

 

 

 

 

 

 

TONE

 

 

 

CTCSS/DTCS DEC

 

 

 

IC5:

IC5:

 

 

NJM12902

NJM12902

 

 

DET

AMP

CDEC

LPF

LPF

+5V

 

 

R190

 

IC403:

NJM12902

SENC0–3

LPF

CDEC

TEMP

SDEC

IC403:

NJM12902

CDCS

CENC0–2

 

LPF

 

Q408:

COMPRESSOR

MSK

IC10:

DE–Modulator

AK2346

IC7:

X4EW–460

CR–765

3.6864 MHzBATT

SELECT

D404:

X401MA2S077

CR–764

19.6608 MHz SHIFT CSFT

SW

AMP

IC12:

BU4094

EXPANDER

IC410:

BU4094

EXPANDER

 

 

 

 

 

 

 

 

 

 

Q21:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2SA1577

T5C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T5

R5C

 

 

 

 

 

 

 

 

 

REG

 

 

 

Q23: 2SB1132

 

 

 

 

 

 

Q24: XP6501

 

 

Q22:

 

 

 

Q25: DTA144EU

 

 

2SA1577

S5C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S5

 

 

R5

VCC

 

 

 

 

REG

 

 

 

REG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+5

 

 

 

 

 

 

 

 

 

REG

 

 

 

 

 

 

 

 

IC9:

 

 

 

 

 

 

 

 

NJM2870

 

 

 

+5V

IC408:

BD5242G

RES

RESET

 

+5V

 

 

 

CPU5

IC409:

CR–746

 

 

 

4.00 MHz

IC407:

IC406:

 

 

NJM12904

TC7W66FK

MC1

 

AMP

MIC

 

 

MUTE

AFO

 

 

 

 

 

T5V

 

 

 

DS402_403

 

 

 

SML–310MT

 

 

 

R5V

 

 

PTT

DS404_405

 

 

 

 

 

SML–A12MT

Q407: DTA144EU

D401: MA2S111

 

 

 

S5V

Q409: XP4111

D402: MA2S111

 

+5V

LED

PTT

 

G

CTRL

DET

 

 

 

 

CONNECTOR

 

 

 

AFO

R

 

 

 

DS406:

 

 

MIC

CL–165HR

 

 

 

 

 

 

PTT

 

 

 

VCC

 

RESET

 

RESET

 

OPTV

 

OPTV

 

 

 

CLI CLO

FRONT UNIT

LCD

NOTES :

Voltage line

DTC144EU

 

 

FIL

 

DUSE

 

SW

 

 

 

 

 

 

 

 

 

 

CPU

IC401: HD6432264F01TF

24LC64T

EEPROM

Contorol line

Common line

TX line

RX line

DATA lime

10 - 1

Image 33
Contents VHF Transceiver Introduction Ordering PartsRepair Notes Table of Contents ‘ General Specifications‘ Transmitter ‘ ReceiverInside Views Main UnitFront Unit Removing the Chassis Unit Disassembly InstructionsRemoving the Front Unit Removing the Main UnitReceiver Circuits Antenna Switching Circuit Main UnitRF Circuit Main Unit 3 1ST Mixer and 1ST if Circuits Main UnitAF Amplifier Circuit Main and Front Units Transmitter CircuitsReceive Mute Circuits Main and Front Units Microphone Amplifier Circuit Front and Main UnitsPLL Circuits DRIVE/POWER Amplifier CircuitsModulation Circuit Main Unit APC Circuit Main UnitVCO Circuit Main Unit Power Supply CircuitMain Unit Voltage Line Front Unit Voltage LinePort Allocations Other CircuitsCompounder Circuit Main Unit Expander IC Front Unit IC410SCK SEG1Mdio MsckExpander IC Main Unit IC12 4 D/A Converter IC Main Unit IC6Preparation Frequency Adjustment Item Adjustment Frequency ListScreen Display Example CtcssJIG Cable ConnectionPtte PTT MIC Mice SP+Software Adjustments Transmitting Convenient Software Adjustments ReceivingConnector Board VR BoardFront Unit IC9 Main UnitVaricap HVC375BTRF Themistor Ertjoep 473J Ceramic ECJ0EC1H0R5B Mechanical Parts and Disassembly Unitmm inch SEMI-CONDUCTOR Information Transistor and FET’SDiodes Board Layouts Main UnitTOP View Q23 Bottom ViewJ402 Front UnitMC401 VR Board VHF B6034BMP701 Connector BoardCPU Section Block Diagram2SC4116BL Voltage DiagramTC7W66FK 11-3 VR / Connector Boards VR Board Icom America Inc 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan