Icom IC-910H service manual Diode HSU88TRF

Page 56

[PA UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

IC40

1110004080

S.IC

µPC2709T-E3

IC200

1110003320

S.IC

µPC2710T-E3

IC240

1110003320

S.IC

µPC2710T-E3

IC501

1110004080

S.IC

µPC2709T-E3

IC502

1110003320

S.IC

µPC2710T-E3

IC701

1180001110

S.IC

PQ20VZ51

Q1

1560000270

S.FET

2SK302-Y (TE85R)

Q2

1560000270

S.FET

2SK302-Y (TE85R)

Q3

1530002370

S.TRANSISTOR

2SC2714-O (TE85R)

Q11

1560000490

S.FET

2SK508 K52 T2B

Q21

1590001660

S.TRANSISTOR

XP4312 (TX)

Q30

1590000430

S.TRANSISTOR

DTC144EUA T106

Q32

1590000430

S.TRANSISTOR

DTC144EUA T106

Q33

1590000430

S.TRANSISTOR

DTC144EUA T106

Q101

1560001090

S.FET

2SK2854

Q117

1590000680

S.TRANSISTOR

DTC114EUA T106

Q121

1560001020

S.FET

2SK2973 (MTS101P)

Q131

1590002690

FET

SRFJ7044

Q151

1530000920

TRANSISTOR

2SC3102

Q152

1530000920

TRANSISTOR

2SC3102

Q180

1590001660

S.TRANSISTOR

XP4312 (TX)

Q182

1520000460

S.TRANSISTOR

2SB1132 T100 R

Q183

1590000680

S.TRANSISTOR

DTC114EUA T106

Q200

1530002680

S.TRANSISTOR

2SC3357-T2

Q201

1590001660

S.TRANSISTOR

XP4312 (TX)

Q202

1590001660

S.TRANSISTOR

XP4312 (TX)

Q203

1590000680

S.TRANSISTOR

DTC114EUA T106

Q220

1530000370

S.TRANSISTOR

2SC3356-T2B

Q221

1530000370

S.TRANSISTOR

2SC3356-T2B

Q260

1580000360

S.FET

3SK177-T1B U73

Q261

1530001940

S.TRANSISTOR

2SC2712-BL (TE85R)

Q281

1590001660

S.TRANSISTOR

XP4312 (TX)

Q282

1590001660

S.TRANSISTOR

XP4312 (TX)

Q300

1590000680

S.TRANSISTOR

DTC114EUA T106

Q501

1560000270

S.FET

2SK302-Y (TE85R)

Q502

1560000270

S.FET

2SK302-Y (TE85R)

Q503

1590001660

S.TRANSISTOR

XP4312 (TX)

Q505

1590000430

S.TRANSISTOR

DTC144EUA T106

Q506

1590000430

S.TRANSISTOR

DTC144EUA T106

Q507

1580000360

S.FET

3SK177-T1B U73

Q508

1590000430

S.TRANSISTOR

DTC144EUA T106

Q510

1590000430

S.TRANSISTOR

DTC144EUA T106

Q511

1560000640

S.FET

2SK1740-TA

Q512

1560000640

S.FET

2SK1740-TA

Q515

1530001940

S.TRANSISTOR

2SC2712-BL (TE85R)

Q650

1540000500

TRANSISTOR

2SD1585K

Q651

1530003740

TRANSISTOR

2SC5125

Q652

1530003740

TRANSISTOR

2SC5125

Q653

1590000680

S.TRANSISTOR

DTC114EUA T106

Q654

1590000680

S.TRANSISTOR

DTC114EUA T106

Q656

1590002770

S.FET

CPH3404-TL

Q658

1590002770

S.FET

CPH3404-TL

Q700

1590001660

S.TRANSISTOR

XP4312 (TX)

Q702

1520000460

S.TRANSISTOR

2SB1132 T100 R

Q703

1590000680

S.TRANSISTOR

DTC114EUA T106

Q950

1590000680

S.TRANSISTOR

DTC114EUA T106

Q951

1590001660

S.TRANSISTOR

XP4312 (TX)

D1

1790000620

S.DIODE

MA77 (TX)

D2

1790000620

S.DIODE

MA77 (TX)

D9

1790000620

S.DIODE

MA77 (TX)

D10

1790000620

S.DIODE

MA77 (TX)

D30

1790000620

S.DIODE

MA77 (TX)

D31

1790000620

S.DIODE

MA77 (TX)

D32

1790000620

S.DIODE

MA77 (TX)

D40

1790000620

S.DIODE

MA77 (TX)

D41

1790000620

S.DIODE

MA77 (TX)

D42

1790000620

S.DIODE

MA77 (TX)

D80

1160000060

S.DIODE

DAN202U T107

D81

1160000060

S.DIODE

DAN202U T107

D82

1160000060

S.DIODE

DAN202U T107

D100

1790000620

S.DIODE

MA77 (TX)

D101

1790000620

S.DIODE

MA77 (TX)

D117

1750000760

S.DIODE

MA4PH224

D180

1720000360

S.DIODE

HSU88TRF

D181

1720000360

S.DIODE

HSU88TRF

D182

1710001060

DIODE

XB15A407

D183

1710001060

DIODE

XB15A407

D184

1710001060

DIODE

XB15A407

 

 

 

 

[PA UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

D185

1710001060

DIODE

XB15A407

D190

1750000430

S.DIODE

HSB88WSTR

D201

1790001620

S.DIODE

1SV308 (TPL3)

D202

1790001620

S.DIODE

1SV308 (TPL3)

D203

1790001620

S.DIODE

1SV308 (TPL3)

D206

1790001620

S.DIODE

1SV308 (TPL3)

D207

1790001620

S.DIODE

1SV308 (TPL3)

D208

1790001620

S.DIODE

1SV308 (TPL3)

D209

1790001620

S.DIODE

1SV308 (TPL3)

D212

1790001620

S.DIODE

1SV308 (TPL3)

D220

1790000620

S.DIODE

MA77 (TX)

D221

1790000620

S.DIODE

MA77 (TX)

D227

1750000760

S.DIODE

MA4PH224

D240

1790000620

S.DIODE

MA77 (TX)

D241

1790000620

S.DIODE

MA77 (TX)

D242

1790000620

S.DIODE

MA77 (TX)

D260

1720000650

S.VARICAP

1SV286 (TPH3)

D261

1720000650

S.VARICAP

1SV286 (TPH3)

D262

1720000650

S.VARICAP

1SV286 (TPH3)

D263

1720000650

S.VARICAP

1SV286 (TPH3)

D264

1750000210

S.DIODE

1SV237 (TE85R)

D265

1750000760

S.DIODE

MA4PH224

D266

1750000760

S.DIODE

MA4PH224

D272

1750000550

S.DIODE

1SS355 TE-17

D300

1790000700

DIODE

DSA3A1

D301

1790000700

DIODE

DSA3A1

D302

1790000700

DIODE

DSA3A1

D303

1160000060

S.DIODE

DAN202U T107

D501

1790000620

S.DIODE

MA77 (TX)

D502

1720000650

S.VARICAP

1SV286 (TPH3)

D503

1720000650

S.VARICAP

1SV286 (TPH3)

D504

1720000650

S.VARICAP

1SV286 (TPH3)

D507

1790000620

S.DIODE

MA77 (TX)

D508

1790000620

S.DIODE

MA77 (TX)

D509

1790000620

S.DIODE

MA77 (TX)

D510

1720000270

S.VARICAP

1SV217 (TPH2)

D511

1720000270

S.VARICAP

1SV217 (TPH2)

D512

1720000270

S.VARICAP

1SV217 (TPH2)

D513

1720000270

S.VARICAP

1SV217 (TPH2)

D514

1790000490

S.DIODE

HSM88AS-TR

D515

1750000210

S.DIODE

1SV237 (TE85R)

D516

1790000620

S.DIODE

MA77 (TX)

D517

1790000620

S.DIODE

MA77 (TX)

D518

1790000620

S.DIODE

MA77 (TX)

D520

1790000620

S.DIODE

MA77 (TX)

D532

1750000550

S.DIODE

1SS355 TE-17

D641

1720000650

S.VARICAP

1SV286 (TPH3)

D642

1720000650

S.VARICAP

1SV286 (TPH3)

D680

1750000270

S.DIODE

1SS301 (TE85R)

D710

1750000450

S.DIODE

1SV265-TL

D720

1720000360

S.DIODE

HSU88TRF

D721

1720000360

S.DIODE

HSU88TRF

D950

1750000760

S.DIODE

MA4PH224

D951

1750000760

S.DIODE

MA4PH224

D952

1750000760

S.DIODE

MA4PH224

FI200

2040001420

S.LC

LFSC25N 12B 0440B

FI201

2040001420

S.LC

LFSC25N 12B 0440B

FI202

2040001420

S.LC

LFSC25N 12B 0440B

FI280

2010001110

FILTER

FL-131 (71M15A1)

FI281

2010001100

FILTER

FL-130 (71M15A)

L1

6150001480

COIL

LS-164

L2

6150001310

COIL

LS-145

L3

6200008080

S.COIL

LQN21A R22J04

L4

6200008080

S.COIL

LQN21A R22J04

L5

6200007770

S.COIL

LQN21A R10J04

L6

6200003280

S.COIL

NL 252018T-2R2J

L10

6200008080

S.COIL

LQN21A R22J04

L11

6200003660

S.COIL

NL 252018T-R68J

L22

6150004210

COIL

LS-480

L23

6150004180

COIL

LS-477

L40

6200005730

S.COIL

ELJRE 39NG-F

L41

6200005730

S.COIL

ELJRE 39NG-F

L42

6200008080

S.COIL

LQN21A R22J04

L44

6200003280

S.COIL

NL 252018T-2R2J

L45

6200008080

S.COIL

LQN21A R22J04

L46

6200008080

S.COIL

LQN21A R22J04

L47

6200002180

S.COIL

NL 252018T-R12J

L51

6200003950

S.COIL

HF50ACC 322513-T

 

 

 

 

S.=Surface mount

6 - 17

Image 56
Contents Service Manual Introduction Ordering PartsRepair Notes EURTable of Contents Specifications GeneralReceiver Section Inside ViewsMain and PLL Units FM if ICPA Unit PLL IC TOP ViewBottom View UX-910 1200MHz Band Unit Disassembly and Option InstructionsOpening the transceiver’s case Main SUB Opening the PA unit coverFL-132/FL-133 CW Narrow Filter Installing 1st DSP unit front panel side Installing 2nd DSP unit rear panel sideUT-102 Voice Synthesizer Unit UT-106 DSP UnitCR-293 High Stability Crystal Unit Circuit Description Receiver Circuit6 10 MHz if Circuit Main Unit Demodulator Circuit Main UnitSquelch Control Circuit Main Unit Squelch Circuit Main UnitTransmitter Circuits Noise Blanker Circuit Main UnitAGC Circuit Main Unit Meter Circuit Main UnitTransmit if Amplifier Circuit Main Unit Modulation Circuit Main UnitCW Keying Circuit Main Unit RF Circuit PA UnitPLL Circuits 8 2LO PLL Circuit PLL Circuits7 1LO PLL Circuit Adjustment Procedures Preparation Before SarvicingRequired Test Equipment ‘ ConnectionsPLL Adjustments Frequency AdjustmentPLL and Main Units Receiver Adjustments R547 P501L353 L354 R360EXT NoiseBlanker Main Band OFFL283 L22CP851 CP852Transmitter Adjustments R503 C659R138 R131If Total Main GainGND LO LeakR504 R202CP1613 R1613Software Adjustment Software Adjustment MeterNoise SQL Filter CalibrationTX Power LPF DeviationHPF OFF UX-910 Adjustments CP321 CP322C332 R13Power SET APCPre-setting for APC adjustment Display Board Section Parts ListFront Unit Resistor ERA3YED VR-B Board Func BoardVR-A Board RIT Board Jack BoardMIC Board PLL UnitResistor ERA3YEB Thermistor Tantalum ECST1AD107R Main Unit REG BA09TDiode DAN222TL Resistor ERA3YKD R364 7030003320 R915 7030003520 Tantalum Temsva 1C 335M-8L Electrolytic ECEV1EA4R7SR Electrolytic Relay Diode HSU88TRF Coil Eljre 15NG-F Resistor ERJ1WYJ181U Resistor ERJ1TYJ102U JB 1H JB 1C Mica DRV Board BARISTOR-A BoardVARISTOR-B Board BARISTOR-C Board2UX-910MAIN Unit Main Unit UX-910Resistor RGB3L R15 Resister ERA3YED Tantalum ECST1CC226R CH 1H Connectot 25FMN-BTK Mechanical Parts Display UnitCover Parts Chassis PartsUnpacking UX-910 Chassis PartsUX-910 Main Unit UX-910 UnpackingSEMI-CONDUCTOR Information Transistors and FET’SDTA114 EE TL Diodes MA29BSection Board Layouts Page Icom America Inc 13714HZ-C1

IC-910H specifications

The Icom IC-910H is a highly regarded and versatile transceiver that is designed for amateur radio operators who are particularly interested in V/UHF and microwave communications. Known for its exceptional performance, the IC-910H encompasses a suite of features that make it a standout choice for both casual and dedicated hams.

One of the main features of the IC-910H is its dual-band capability, allowing for simultaneous operation on both 144 MHz (2 meters) and 430 MHz (70 centimeters) bands. This dual operation enables users to engage in various communication modes, including SSB, CW, FM, and digital. Its high frequency stability ensures that users can rely on the transceiver for accurate and consistent transmissions.

The IC-910H is equipped with a high-performance 10 MHz IF filter that improves selectivity and reduces adjacent channel interference. The optional 1.2 GHz module enhances the transceiver’s capabilities, allowing operators to venture into microwave frequencies. This expandability is a significant advantage for users who wish to progress in their amateur radio pursuits.

Another notable aspect of the IC-910H is its large, easy-to-read LCD display, which features various color options for enhanced visibility. The front panel layout is user-friendly, providing quick access to important controls and functions. The built-in DSP (Digital Signal Processing) technology offers noise reduction and filtering capabilities, significantly improving overall audio quality and making weak signals more intelligible.

The transceiver also includes extensive memory functions, with up to 1,000 memory channels available for storing frequencies, modes, and operational settings. Additionally, it supports CTCSS and DCS tones, which facilitate the use of repeater systems and private group communications.

In terms of build quality, the IC-910H features a robust construction designed for durability and long-term use. Its efficient power supply management ensures excellent performance while minimizing heat generation, making it suitable for extended operating sessions.

Overall, the Icom IC-910H is a powerful and feature-rich transceiver that is favored by many amateur radio enthusiasts. With its versatile operating modes, advanced filtering capabilities, and clear display, it stands out as a reliable tool for both casual operators and serious DXers. Its well-thought-out design and comprehensive features make it a valuable addition to any ham's station collection.