Motorola IC-T81E Oscin Mixin Oscout GND Mixout REC VCC DET Ifin Rssi, Thermc 2NDLO Pset, Afo

Page 47

 

R+3

R: 3.4

 

 

 

 

 

 

NOISE

SD

 

 

T: 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C737

 

 

 

 

 

 

 

 

 

 

0.01

 

 

2NDLO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R+3

 

 

 

 

 

C709

C708

 

R717

 

 

 

 

 

 

 

 

1 K

 

 

C707

C706

R726

 

 

15

0.1

 

 

 

 

0.1

0.01

47 K

 

 

 

 

 

 

 

 

 

C703

 

 

 

 

 

 

1

 

 

16

0.001

 

 

 

 

 

 

OSCIN

MIXIN

 

 

 

 

 

 

 

2

15

 

 

 

 

 

 

 

3

OSCOUT

GND

14

 

 

 

 

 

 

 

4

MIXOUT

N-REC

13

 

 

 

 

 

 

 

5

VCC

N-DET

12

 

 

 

 

 

 

 

6

IFIN

RSSI

11

 

C700

 

 

R737

 

 

7

DEC

IFOUT

10

 

 

 

 

 

FILOUT

QUAD

 

0.1

 

 

TBPS1R153K460H5Q

C735

 

8

FILIN

AFOUT

9

C712

 

 

 

 

0.1

 

R730

 

 

 

33 P R727

 

 

 

 

 

220 K

IC701

 

 

 

 

 

R735

 

 

 

 

 

22 K

 

 

 

15 K

 

 

 

TA31136FN(D)

 

 

 

 

 

 

 

C734

C733

 

 

 

 

 

 

 

C736

0.001

 

 

 

 

 

 

 

0.001

 

 

 

 

 

 

 

0.001

 

 

 

 

 

 

 

R736

R734

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15 K

22 K

 

R731

R732

 

 

 

 

 

 

 

 

180 K

4.7 K

 

 

C701

 

 

C713

 

 

 

 

 

 

 

 

 

 

R733

 

 

 

 

 

180 P

 

 

0.001

 

 

 

 

 

 

 

 

 

20 K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R706

 

 

 

 

 

 

 

 

 

 

10 K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L702

 

 

 

 

 

 

 

 

 

 

LS-528

 

 

C720

0.047

R729

1.8 K Q702

UN9115

1

16

WFM

R+3

R1

NTCCF20124AH 473KCT

TXC

R2

 

 

 

 

100K

8

7

6

5

 

C907

0.001

1 2 3 4 IC4

TC4W53FU

THERMC

2NDLO

PSET

+3C

C: 13.2

C906

0.001

2NDLO

IFIN

THERM

PSET

DATA

+3C

CK

PDA2/UL

AGC

VCC

TUNE

VHVCO

LOCKV

UVCO

PLST1

TXC

PDA1/UL

12VCO

BDET

WFM

AM

MOD

IOST

J1 AXK6S40645P

140

GND

239

338

437

GND

536

635

734

833

932

1031

1130

1229

1328

GND

1427

GND

15 26

 

2

DO

VCC

15

C212

LD

VDD

150

3

CLK

AO6

14

 

4

13

 

DI

AO5

R+3

PLST2

CHGC

GND

16

25

 

5

AO1

AO4

12

R201

6

AO2

AO3

11

7

10

6MVCO

17 24

10

NC

NC

 

8

GND

VSS

9

C201

 

 

 

0.047

IC5

 

M62368GP

HV

FSET

DC-DC

18

GND

19

23

22

 

C77

PSET

DATA CK DAST

 

TUNE

FSET

R205

0.001

 

68

 

 

 

 

 

 

 

 

R204

 

+3C

 

 

 

 

68

 

 

VCC

R+3

 

.2

 

 

 

R203

 

 

 

 

 

 

68

 

VCC

 

 

 

 

EURDEV

20

21

C205

 

 

 

 

Q7

 

 

C: 3.3

 

47

 

 

 

 

XP1501 AB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

5

 

Q8

 

AB

R208

 

 

 

 

 

 

 

 

 

 

R3C 2

 

 

2SB1132 R

 

10K

 

 

 

 

 

 

 

 

 

AFON

 

 

 

 

 

 

 

3

4

 

 

 

 

C207

C162

R207

 

 

C75

 

C76

 

 

1 M

 

 

 

 

 

4.7

0.001

 

 

 

 

 

 

 

 

2.2

 

0.001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C: 5.0

 

 

 

 

 

 

 

 

 

DC-DC

 

 

 

 

31

R332

 

R323

R337

 

 

L3

 

 

0 K

39 K

 

56 K

470 K

 

 

 

 

 

 

 

330∝

 

 

 

 

 

 

 

VCC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R342

 

 

 

 

 

 

 

 

 

10 K

 

 

 

 

25

R326

 

R327

R338

+3C

3

2

1

 

K

50 K

 

50 K

50 K

 

 

 

 

 

 

 

 

 

 

 

 

 

R343

 

 

Q308

 

 

 

 

 

 

27 K

 

 

XP5601 AB

4

Q305

 

Q306

Q309

 

 

 

 

 

4

5

6

 

364 Q

2SJ364 Q

2SJ364 Q

2SJ364 Q

 

 

 

 

 

 

 

 

 

 

MOD

 

 

D3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MA2S111

C2

 

 

 

 

 

C326

 

 

 

 

C321

 

C322

C328

 

 

 

0.001

 

 

0.001

R334

 

 

 

0.001

 

0.001

0.001

 

C1

 

 

 

 

1 K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.7

 

 

R329

 

R330

R339

 

 

 

 

 

 

470 K

 

470 K

470 K

 

 

 

 

 

UVCO

6MVCO

12VCO

 

 

 

 

 

 

C904

C903

C910

C914

C913 C912

C909

0.001

0.001

0.001

0.001

0.001 0.001

0.001

 

 

 

 

 

 

AFO

 

 

 

 

 

 

INTSP

SPREMOTE

 

 

 

 

 

 

C917

C901

 

 

 

 

C923

0.001

 

 

 

 

0.001

 

 

 

 

47 P

 

 

 

 

 

 

D2

C17

MA729

0.68

 

IC3

XC6371A500PR

L1

L2

5CA-395KN-0369AQ

4.7 ∝

I

O

 

G

C: 2.5

C6

4.7

 

R901

330

C927

0.001

C926

0.001

J3 HSJ1501-011010

J4 HSJ1122-010010

11 - 1

COMPLETE VIEW

 

 

 

Page 46 Page 48
Image 47
Page 46 Page 48
Contents Multiband FM Transceiver Sample Order IntroductionOrdering Parts Repair NotesTable of Contents Version 50 MHz 145 MHz 440 MHz 1200 MHz MHz RX only SpecificationsGeneral TransmitterWFM ReceiverBand WFMCPU Inside ViewsLogic Unit RF UnitLogic unit Disassembly InstructionsRemoving the Chassis Panel Removing the Shield Plate Removing the Logic Unit Removing the RF UnitDuplexer Circuit RF Unit Antenna Switching Circuits RF UnitCircuit Description Receiver Circuits7 1ST Mixer Circuit RF Unit Transmitter Circuits APC Control Circuit DRIVE/POWER Amplifier Circuits RF UnitAPC Circuits RF Unit MHz PAVCC Power Supply Circuits Voltage LinePLL Circuits Line DescriptionPin Port Description Number Name Port Allocations1 I/O Expander IC RF Unit IC2 2 I/O Expander IC RF Unit IC3CPU Logic Unit IC1 Connection Adjustment ProceduresPreparation ‘ Required Test EquipmentPLL Adjustment RF Unit TOP View 6MLV RF Unit Bottom ViewULV VLVVHF Receiver AdjustmentDial SensitivityLogic Unit TOP View 101 dBm MeterSSG Top Push and hold MHz bandSQL key Displayed frequencyPush and hold 445.000 MHz USA-1Transmitter Adjustment AUS, SEA DeviationHPF OFF LPF Dtmf=Surface mount Parts ListTrimmer Ceramic ECUE1H121JCQ Transistor UN911D TX Coil Eljnd R10J 0.1U Themistor Ceramic ECUE1H060CCQ Ceramic ECUE1H390JCQ VCO Board Ceramic ECUE1H120JCQ VCO Unit Mechanical Parts and DisassemblyAccessories Chassis PartsMP29 C Diodes SEMI-CONDUCTOR InformationTransistor and FET’S TOP View Board LayoutsLogic Unit GND Pset Ifin Bottom ViewIC1 IC3J4 to Logic unit J1 RF UnitIC6 L912IC2 MP1IC3 VLVCO3 VHF GND VHVCO3 UVCO3 Uhfout GND 12VCO3 GND VCO BoardJ302 to RF unit OUT 12VCOOUTQ354 Block Diagram ANT LPF HPF AMP Mode Xtal BPF PDA2, CK AMPTX/RX Frequency TX/RX BuffANT Buff HPF LPF YGR ResetMode Xtal Initial BPF MOD TX/RX FrequencyLogic Unit Section Voltage DiagramWFM NTCCF20124AH 473KCT TXC 2NDLOOscin Mixin Oscout GND Mixout REC VCC DET Ifin Rssi DEC Ifout Filout QuadCOM4 COM3 COM2 COM1 12VCO COM2 ResetCOM3 COM2 Reset Power Clonein VCC VIN Cpuhv1200M RF UnitVHF 400M400MHz 50M00M 1200MHzLOK GND2 GND1PLST1 IN1 ENB VCC2Icom America Inc Icom Inc 5566I-S
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