Vertex Standard FT-1807M User Manual

1Quad Band FM TransceiverFT-8900RTechnical SupplementIntroductionThis manual provides technical information necessary for servicing the FT-8900R Trans

10Note

11AlignmentIntroduction and PrecautionsThe FT-8900R has been carefully aligned at the factoryfor the specified performance across the 29 MHz, 50 MHz,1

12AlignmentEntering the Alignment modeAlignment of the FT-8900R is performed using a front-panelsoftware-based procedure. To perform alignment of the

13AlignmentTX Power Output (A-2 PWR)1. Press the “Sub” band DIAL knob momentarily, ifneeded, to switch the “Main” band to be the “Right”band.2. Tune t

14knob, as needed, so that the deviation meter readingis between 0.35 kHz and 0.45 kHz.CTCSS Tx Deviation (A-6 CTC)1. Press the “Sub” band DIAL knob m

1533. Press the “Left” band [V/M] key, then adjust the“Right” DIAL knob, as needed, so that the S-meterdeflects full scale.34. Tune the “Left” band fr

16Note

17MAIN UnitCircuit Diagram(xx) = 29.1 V[xx] = 52.1 V<xx> = 146.1 V4.88 V8.88 V8.80 V13.09 V4.89 VPOWER ON:4.22 VPOWER ON:4.75 VPOWER ON:4.76 VPO

18MAIN Unit

19MAIN UnitA B C D E F G12345Side AM51132FP(Q1042)M3826AEFGP(Q1084)BU2090FS(Q1042)MB15A02PFV1(Q1090)TA31136FN(Q1018, 1024)BU4066BCFV(Q1051)NJM2902V(Q1

2SpecificationsGENERALFrequency Range: RX: 28.000 - 29.700 MHz, 50.000 - 54.000 MHz,108.000 - 180.000 MHz, 320.000 - 480.000 MHz,700 - 985 MHz (Cellul

20MAIN Unita b c d e fg12345Side B2SA1774 (FR)(Q1062, 1094, 1098)BU4066BCFV(Q1086)NJM2902V(Q1025, 1034)AT24C128N(Q1067)NJM2904V(Q1130)TC4W66FU(Q1046,

21MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRPCB with Component CS1769004 TYP: A2U DST: USACS17

22REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListC 1070 CHIP CAP. 2pF 50V CK GRM36CK020B50PT K22178

23MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRC 1163 CHIP CAP. 7pF 50V CH GRM36CH070B50PT K22178

24REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListC 1242 CHIP CAP. 0.01uF 16V B GRM36B103K16PT K2212

25MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRC 1322 CHIP CAP. 0.001uF 50V B GRM36B102K50PT K221

26REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListC 1405 CHIP CAP. 1uF 10V B GRM40B105K10PT(0.85) K2

27MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRC 1486 CHIP CAP. 0.001uF 50V B GRM36B102K50PT K221

28REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListC 1578 CHIP CAP. 12pF 200V CH GRM40CH120J200PT K22

29MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRC 1673 CHIP CAP. 0.47uF 25V B GRM40B474K25PT K2214

3Exploded View & Miscellaneous PartsRA0396700LIGHT GUIDERA0396800LCD HOLDERRA0396900 (x2 pcs)INTER CONNECTORRA0397100REFLECTOR SHEETRA0397000DIFFU

30REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListC 1794 CHIP CAP. 0.001uF 50V B GRM36B102K50PT K221

31MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRD 1043 DIODE MA2S111-(TX) G2070614 1- A A2D 1044 D

32REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListD 1125 DIODE DAN222 TL G2070174 1- B e3D 1126 DIOD

33MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRL 1053 M.RFC 0.0047uH TFL0816-4N7 L1690487 1- A G4

34REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListL 1141 COIL E2 0.3-1.1-3T-R L0022579 1- A C3L 1142

35MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRQ 1065 TRANSISTOR 2SC4617 TL R G3346178R 1- B g4Q

36REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListR 1002 CHIP RES. 100k 1/16W 5% RMC1/16S 104JTH J24

37MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRR 1084 CHIP RES. 47k 1/16W 5% RMC1/16S 473JTH J241

38REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListR 1170 CHIP RES. 100k 1/16W 5% RMC1/16S 104JTH J24

39MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRR 1252 CHIP RES. 390k 1/16W 5% RMC1/16S 394JTH J24

4Connection Diagram

40REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListR 1330 CHIP RES. 68k 1/16W 5% RMC1/16S 683JTH J241

41MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRR 1384 CHIP RES. 1k 1/16W 5% RMC1/16S 102JTH J2418

42REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListR 1460 CHIP RES. 10k 1/16W 5% RMC1/16S 103JTH J241

43MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRR 1539 CHIP RES. 220 1/16W 5% RMC1/16S 221JTH J241

44REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListR 1621 CHIP RES. 10k 1/16W 5% RMC1/16S 103JTH J241

45MAIN UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRR 1711 CHIP RES. 470 1/16W 5% RMC1/16S 471JTH J241

46REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRMAIN UnitParts ListNoteParts List

47PANEL UnitCircuit Diagram3.14 VDIMMER 1:4.80 V3.80 Vp-p4.50 Vp-pDIMMER 1:6.61 VDIMMER 1:2.08 VDIMMER 1:4.23 VDIMMER 1:2.08 VDIMMER 1:8.22 V8.80 V8.9

48PANEL UnitCircuit DiagramA B C D E F G12a b c d e fg12Side ASide BTC4W53FU(Q2004)2SA1602A (MF)(Q2005)2SC4617 (BR)(Q2007)RT1N441U (N3)(Q2006)HZM27WA

49PANEL UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRPCB with Components CB2131001Printed Circuit Boar

5Circuit DescriptionReceiver Signal Path“Left” Band 430 MHz SignalThe 430 MHz signal is passed through a high-pass filternetwork and a low-pass filter

50REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRPANEL UnitParts ListR 2014 CHIP RES. 220k 1/16W 5% RMC1/16S 224JTH J2

51PANEL UnitParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRS 2004 TACT SWITCH SKQMAL N5090105 1- A C2S 2005

52REF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRPANEL UnitParts ListNote

53PANEL-SUB UnitCircuit Diagram3.67 V3.64 V3.67 V8.97 V3.67 V3.67 V8.74 V

54PANEL-SUB UnitParts LayoutParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRA B C1A B C1Side ASide BPCB with

55VR-L UnitParts LayoutCircuit DiagramParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRPCB with Components CB2

56VR-R UnitParts LayoutCircuit DiagramParts ListREF DESCRIPTION VALUE V/W TOL. MFR'S DESIG VXSTD P/N VERS.LOT SIDE LAY ADRPCB with Components CB2

17

18Copyright 2002VERTEX STANDARD CO., LTD.All rights reserved.No portion of this manualmay be reproducedwithout the permission ofVERTEX STANDARD CO., L

6first mixer Q1003 (3SK296ZQ). Meanwhile, the UHF lo-cal signal from the UHF-VCO/B Q1106 (2SC5006) is de-livered to first mixer Q1004, yielding the 47

7Q1134 (RD70HVF1), providing up to 35 Watts of poweroutput. These three stages of the power amplifier’s gainare controlled by the APC circuit.The 35-W

8Q1130 (NJM2904V), as a DC voltage which is proportionalto the output level of the power amplifier.At Q1130, the rectified DC voltage from the power a

9is divided according to the frequency dividing data asso-ciated with the operating frequency input from the mainCPU Q1084. It is then sent to the pha