Vertex Standard FT-1807M User Manual download pdf

Introduction

This manual provides technical information necessary for servicing the FT-1807M FM Transceiver.

Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-

qualified persons to service this equipment may result in permanent damage not covered by the warranty,

and may be illegal in some countries.

Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver. Each side of is

referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most

cases one side has only chip components, and the other has either a mixture of both chip and leaded compo-

nents (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.

While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no

liability for damage that may occur as a result of typographical or other errors that may be present. Your

cooperation in pointing out any inconsistencies in the technical information would be appreciated.

Technical Supplement

Specifications ......................................................2

Exploded View & Miscellaneous Parts............3

Block Diagram....................................................5

Connection Diagram ..........................................6

Circuit Description.............................................7

Alignment ............................................................9

Contents

Board Unit (

Schematics, Layouts & Parts

)

MAIN Unit Circuit Diagram ................................. 13

MAIN Unit Parts Layout ....................................... 15

MAIN Unit Parts List ............................................ 17

CNTL Unit Circuit Diagram.................................. 27

CNTL Parts Layout ............................................... 28

CNTL Parts List .................................................... 29

VERTEX STANDARD CO., LTD.

4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan

VERTEX STANDARD

US Headquarters

10900 Walker Street, Cypress, CA 90630, U.S.A.

YAESU EUROPE B.V.

P.O. Box 75525, 1118 ZN Schiphol, The Netherlands

YAESU UK LTD.

Unit 12, Sun Valley Business Park, Winnall Close

Winchester, Hampshire, SO23 0LB, U.K.

VERTEX STANDARD HK LTD.

Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,

Kwun Tong, Kowloon, Hong Kong

FM TRANSCEIVER

FT-1807M

Important Note

This transceiver was assembled using Pb (lead) free solder, based on the RoHS specification.

Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on

this apparatus. The solder stated above utilizes the alloy composition required for compliance with the

lead-free specification, and any solder with the above alloy composition may be used.

1 2 3 4 5 6 ... 33 34

Summary of Contents

Page 1 - FT-1807M

IntroductionThis manual provides technical information necessary for servicing the FT-1807M FM Transceiver.Servicing this equipment requires expertise

Page 2 - Specifications

10Alignment Preparation & PrecautionsA 50-Ohm RF load and in-line wattmeter must beconnected to the antenna jack in all procedures thatcall for tr

Page 3

11Squelch Threshold Level Inject a 435.100 MHz signal at a level of –14 dBµ(with 1 kHz modulation @±3.5 kHz deviation)from the RF signal generator.

Page 4

12CTCSS TX Deviation Rotate the DIAL knob to set the alignment param-eter to “435.000 103435.000 103435.000 103435.000 103435.000 103.” Press the [D

Page 5 - Block Diagram

13MAIN UnitCircuit Diagram1.5 V(1.5 V)Ú1Ú2 Q1043 Pin 2TX (LOW 1): 0.7 V (2.0 V)TX (LOW 2): 0.7 V (2.4 V)TX (LOW 3): 0.7 V (3.1 V)TX (HIGH): 0.7 V

Page 6 - Connection Diagram

14MAIN UnitNote

Page 7 - Circuit Description

15MAIN UnitParts Layout (Side A)BA DCEF123452SA1774 (FR)(Q1007)2SC4154 (E)(Q1033)2SC4400 (RT4)(Q1032)2SC4617 (BR)(Q1051, 1053)2SC5226 (R22)(Q1026)2SC4

Page 8

16MAIN UnitParts Layout (Side B)ba dcef123452SA1774 (FR)(Q1024, 2027, 1029)2SC4154 (E)(Q1001, 1021, 1046,1047)FMMTL718TA(Q1025)2SJ364 (4M)(Q1034, 1036

Page 9

17PCB with Components CB3539001 FT-1807MCB3539002 FT-1807EPrinted Circuit Board AH023U000 FR014760C 1-C 1001 CHIP TA.CAP. 10uF 10V TAJA106M010Y K78100

Page 10 - Alignment

18Parts ListMAIN UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRC 1082 AL.ELECTRO.CAP. 100uF 16V RC2-16V101MF1# K401

Page 11

19Parts ListMAIN UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRC 1166 CHIP CAP. 0.01uF 25V B GRM39B103M25PT K221448

Page 12

2SpecificationsGeneralFrequency Range: Tx 400 - 470 MHzRx 400 - 470 MHzChannel Step: 5/10/12.5/15/20/25/50/100 kHzStandard Repeater Shift: ±600 kHzFre

Page 13 - MAIN Unit

20Parts ListMAIN UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRC 1251 CHIP CAP. 1pF 50V CK GRM1884C1H1R0BZ01D K2217

Page 14

21Parts ListMAIN UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRL 1003 CHIP COIL 0.0033uH LQN21A3N3D04 L1690606 1- A

Page 15

22Parts ListMAIN UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRR 1004 CHIP RES. 100 1/16W 5% RMC1/16S 101JTH J24189

Page 16

23Parts ListMAIN UnitR 1092 CHIP RES. 2.2k 1/16W 5% RMC1/16S 222JTH J24189029 1- B e3R 1093 CHIP RES. 1k 1/16W 5% RMC1/16S 102JTH J24189025 1- B e3R 1

Page 17

24R 1173 CHIP RES. 1k 1/16W 5% RMC1/16S 102JTH J24189025 1- A F3R 1175 CHIP RES. 47 1/16W 5% RMC1/16S 470JTH J24189009 1- A F4R 1177 CHIP RES. 10k 1/1

Page 18

25Parts ListMAIN UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRR 1257 CHIP RES. 2.7k 1/16W 5% RMC1/16S 272JTH J2418

Page 19

26NoteMAIN Unit

Page 20

27CNTL UnitCircuit DiagramÚÚ J2003Pin RX TX1 5.0 V 5.0 V20 V 0 V30 V 0 V40 V 0 V50 V 0 V60 V 0 V70 V 0 V8 1.9 V 1.8 V9 3.0 V 3.0 V10 0 V 0 V11 1.1 V 0

Page 21

28CNTL UnitParts LayoutBA DCEF G122SC4617 (BR)(Q2007, 2008, 2013)2SC5374 (NA)(Q2003)BR24L64(Q2006)HD64F2266TF13(Q2002)ba dcef g12S-812C50AUA(Q2010)BD4

Page 22

29PCB with Components CB3540001 FT-1807M A2CB3540002 FT-1807M A1CB3540003 FT-1807M A3CB3540004 FT-1807E B1CB3540005 FT-1807E B2CB3540006 FT-1807M B3CB

Page 23

3Exploded View & Miscellaneous PartsgcdefggdddcccffffffffeeeeeeeeeeM4090178SPEAKERNon-designated parts are available only aspart of a designated a

Page 24

30Parts ListCNTL UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOTSIDELAY ADRD 2002 LED SML-512WWT86 G2071104 1- A C1D 2003 LED S

Page 25

31Parts ListCNTL UnitREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/NLOT…LAY ADRR 2031 CHIP RES. 100 1/16W 5% RMC1/16S 101JTH J24189013 1- A

Page 26

32NoteCNTL Unit

Page 27 - CNTL Unit

Page 28

Page 29

4Note

Page 30

5Block Diagram

Page 31

6Connection Diagram

Page 32

7Circuit DescriptionReceive Signal PathIncoming RF signal is from the antenna jack is deliv-ered to the Main Unit and passed through the low-pass filt

Page 33

8Circuit DescriptionTX APC CircuitA portion of the power amplifier module output isrectified by D1022 (1SS321), then delivered to APCQ1038 (LM2904PWR)

Page 34

9AlignmentIntroductionThe FT-1807M is carefully aligned at the factory forthe specified performance across the amateur band.Realignment should therefo