Icom IC-910H service manual Thermistor

Page 45

[PLL UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

R427

7030003300

S.RESISTOR

ERJ3GEYJ 680 V (68 )

R474

7030003560

S.RESISTOR

ERJ3GEYJ 103 V (10 k)

R475

7030003290

S.RESISTOR

ERJ3GEYJ 560 V (56 )

R476

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R477

7030003230

S.RESISTOR

ERJ3GEYJ 180 V (18 )

R478

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R479

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R481

7030003320

S.RESISTOR

ERJ3GEYJ 101 V (100 )

R482

7030003620

S.RESISTOR

ERJ3GEYJ 333 V (33 k)

R483

7030003440

S.RESISTOR

ERJ3GEYJ 102 V (1 k)

R501

7030008190

S.RESISTOR

ERJ12YJ330U (33 )

R502

7030008190

S.RESISTOR

ERJ12YJ330U (33 )

R503

7030008190

S.RESISTOR

ERJ12YJ330U (33 )

R515

7030003420

S.RESISTOR

ERJ3GEYJ 681 V (680 )

R538

7030003470

S.RESISTOR

ERJ3GEYJ 182 V (1.8 k)

R541

7030003420

S.RESISTOR

ERJ3GEYJ 681 V (680 )

R542

7030003630

S.RESISTOR

ERJ3GEYJ 393 V (39 k)

R543

7030003320

S.RESISTOR

ERJ3GEYJ 101 V (100 )

R544

7030003400

S.RESISTOR

ERJ3GEYJ 471 V (470 )

R545

7030003270

S.RESISTOR

ERJ3GEYJ 390 V (39 )

R547

7030003330

S.RESISTOR

ERJ3GEYJ 121 V (120 )

R548

7030003330

S.RESISTOR

ERJ3GEYJ 121 V (120 )

R551

7030003460

S.RESISTOR

ERJ3GEYJ 152 V (1.5 k)

R552

7030003320

S.RESISTOR

ERJ3GEYJ 101 V (100 )

R553

7030003580

S.RESISTOR

ERJ3GEYJ 153 V (15 k)

R554

7030003530

S.RESISTOR

ERJ3GEYJ 562 V (5.6 k)

R555

7030003340

S.RESISTOR

ERJ3GEYJ 151 V (150 )

R556

7030003320

S.RESISTOR

ERJ3GEYJ 101 V (100 )

R557

7030003290

S.RESISTOR

ERJ3GEYJ 560 V (56 )

R558

7030003320

S.RESISTOR

ERJ3GEYJ 101 V (100 )

R559

7510001190

S.THERMISTOR

NTCCM1608 4BH 472KC

R568

7030003640

S.RESISTOR

ERJ3GEYJ 473 V (47 k)

R569

7030003320

S.RESISTOR

ERJ3GEYJ 101 V (100 )

R570

7310002720

S.TRIMMER

RV-148 (RH03A3AS3X0DA) 472

R571

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R572

7030003600

S.RESISTOR

ERJ3GEYJ 223 V (22 k)

R601

7030007230

S.RESISTOR

ERA3YED 102V

R602

7030007230

S.RESISTOR

ERA3YED 102V

R603

7030007230

S.RESISTOR

ERA3YED 102V

R604

7030007230

S.RESISTOR

ERA3YED 102V

R605

7030007230

S.RESISTOR

ERA3YED 102V

R606

7030007230

S.RESISTOR

ERA3YED 102V

R607

7030007210

S.RESISTOR

ERA3YEB 102V

R608

7030007210

S.RESISTOR

ERA3YEB 102V

R609

7030007210

S.RESISTOR

ERA3YEB 102V

R610

7030007220

S.RESISTOR

ERA3YED 202V

R611

7030007220

S.RESISTOR

ERA3YED 202V

R612

7030007220

S.RESISTOR

ERA3YED 202V

R613

7030007220

S.RESISTOR

ERA3YED 202V

R614

7030007220

S.RESISTOR

ERA3YED 202V

R615

7030007220

S.RESISTOR

ERA3YED 202V

R616

7030007220

S.RESISTOR

ERA3YED 202V

R617

7030007200

S.RESISTOR

ERA3YEB 202V

R618

7030007200

S.RESISTOR

ERA3YEB 202V

R619

7030007200

S.RESISTOR

ERA3YEB 202V

R620

7030007200

S.RESISTOR

ERA3YEB 202V

R621

7030003350

S.RESISTOR

ERJ3GEYJ 181 V (180 )

R622

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R623

7030003640

S.RESISTOR

ERJ3GEYJ 473 V (47 k)

R625

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R626

7030003230

S.RESISTOR

ERJ3GEYJ 180 V (18 )

R627

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R628

7030003440

S.RESISTOR

ERJ3GEYJ 102 V (1 k)

R629

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R630

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R631

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R701

7030007230

S.RESISTOR

ERA3YED 102V

R702

7030007230

S.RESISTOR

ERA3YED 102V

R703

7030007230

S.RESISTOR

ERA3YED 102V

R704

7030007230

S.RESISTOR

ERA3YED 102V

R705

7030007230

S.RESISTOR

ERA3YED 102V

R706

7030007230

S.RESISTOR

ERA3YED 102V

R707

7030007210

S.RESISTOR

ERA3YEB 102V

R708

7030007210

S.RESISTOR

ERA3YEB 102V

R709

7030007210

S.RESISTOR

ERA3YEB 102V

R710

7030007220

S.RESISTOR

ERA3YED 202V

R711

7030007220

S.RESISTOR

ERA3YED 202V

R712

7030007220

S.RESISTOR

ERA3YED 202V

R713

7030007220

S.RESISTOR

ERA3YED 202V

R714

7030007220

S.RESISTOR

ERA3YED 202V

R715

7030007220

S.RESISTOR

ERA3YED 202V

R716

7030007220

S.RESISTOR

ERA3YED 202V

 

 

 

 

[PLL UNIT]

REF

ORDER

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

R717

7030007200

S.RESISTOR

ERA3YEB 202V

R718

7030007200

S.RESISTOR

ERA3YEB 202V

R719

7030007200

S.RESISTOR

ERA3YEB 202V

R720

7030007200

S.RESISTOR

ERA3YEB 202V

R721

7030003350

S.RESISTOR

ERJ3GEYJ 181 V (180 )

R722

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R723

7030003640

S.RESISTOR

ERJ3GEYJ 473 V (47 k)

R725

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R726

7030003230

S.RESISTOR

ERJ3GEYJ 180 V (18 )

R727

7030003370

S.RESISTOR

ERJ3GEYJ 271 V (270 )

R728

7030003440

S.RESISTOR

ERJ3GEYJ 102 V (1 k)

R729

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R730

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

R731

7030003360

S.RESISTOR

ERJ3GEYJ 221 V (220 )

C1

4030006900

S.CERAMIC

C1608

JB 1E 103K-T-A

C2

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C3

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C4

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C5

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C9

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C12

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C13

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C14

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C15

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C16

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C101

4030007010

S.CERAMIC

C1608

CH 1H 100D-T-A

C102

4030007010

S.CERAMIC

C1608

CH 1H 100D-T-A

C103

4030007080

S.CERAMIC

C1608

CH 1H 390J-T-A

C104

4030007050

S.CERAMIC

C1608

CH 1H 220J-T-A

C105

4030007100

S.CERAMIC

C1608

CH 1H 560J-T-A

C106

4030007020

S.CERAMIC

C1608

CH 1H 120J-T-A

C107

4030007110

S.CERAMIC

C1608

CH 1H 680J-T-A

C108

4030006950

S.CERAMIC

C1608

CH 1H 040C-T-A

C109

4030007100

S.CERAMIC

C1608

CH 1H 560J-T-A

C110

4030007060

S.CERAMIC

C1608

CH 1H 270J-T-A

C111

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C113

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C121

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C122

4030012600

S.CERAMIC

C2012

JB 1A 105M-T-A

C123

4030007110

S.CERAMIC

C1608

CH 1H 680J-T-A

C124

4030007040

S.CERAMIC

C1608

CH 1H 180J-T-A

C131

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C132

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C133

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C134

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C135

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C136

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C137

4030007110

S.CERAMIC

C1608

CH 1H 680J-T-A

C138

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C139

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C140

4030007130

S.CERAMIC

C1608

CH 1H 101J-T-A

C141

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C142

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C143

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C144

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C145

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C146

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C147

4550006700

S.TANTALUM

ECST1AY106R

C148

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C153

4030006900

S.CERAMIC

C1608

JB 1E 103K-T-A

C161

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C162

4030006850

S.CERAMIC

C1608

JB 1H 471K-T-A

C163

4510004630

S.ELECTROLYTIC

ECEV1CA100SR

C164

4550006170

S.TANTALUM

ECST1AY225R

C165

4550006170

S.TANTALUM

ECST1AY225R

C166

4550006150

S.TANTALUM

ECST1CY105R

C167

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C168

4030006850

S.CERAMIC

C1608

JB 1H 471K-T-A

C169

4510004630

S.ELECTROLYTIC

ECEV1CA100SR

C170

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C171

4030008920

S.CERAMIC

C1608

JB 1C 473K-T-A

C172

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C173

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C174

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C175

4510004440

S.ELECTROLYTIC

ECEV1HA010SR

C181

4510004630

S.ELECTROLYTIC

ECEV1CA100SR

C182

4510004630

S.ELECTROLYTIC

ECEV1CA100SR

C183

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C184

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C191

4030007070

S.CERAMIC

C1608

CH 1H 330J-T-A

 

 

 

 

 

S.=Surface mount

6 - 6

Image 45
Contents Service Manual Ordering Parts IntroductionRepair Notes EURTable of Contents General SpecificationsReceiver Inside Views SectionMain and PLL Units FM if ICPA Unit TOP View Bottom ViewPLL IC Disassembly and Option Instructions Opening the transceiver’s caseUX-910 1200MHz Band Unit Opening the PA unit cover FL-132/FL-133 CW Narrow FilterMain SUB Installing 2nd DSP unit rear panel side Installing 1st DSP unit front panel sideUT-102 Voice Synthesizer Unit UT-106 DSP UnitCR-293 High Stability Crystal Unit Receiver Circuit Circuit DescriptionDemodulator Circuit Main Unit 6 10 MHz if Circuit Main UnitSquelch Control Circuit Main Unit Squelch Circuit Main UnitNoise Blanker Circuit Main Unit Transmitter CircuitsAGC Circuit Main Unit Meter Circuit Main UnitModulation Circuit Main Unit Transmit if Amplifier Circuit Main UnitCW Keying Circuit Main Unit RF Circuit PA UnitPLL Circuits PLL Circuits 7 1LO PLL Circuit8 2LO PLL Circuit Preparation Before Sarvicing Adjustment ProceduresRequired Test Equipment ‘ ConnectionsFrequency Adjustment PLL AdjustmentsPLL and Main Units Receiver Adjustments P501 R547L353 L354 R360Noise EXTBlanker Main Band OFFL22 L283CP851 CP852Transmitter Adjustments C659 R503R138 R131Main Gain If TotalGND LO LeakR202 R504CP1613 R1613Software Adjustment Meter Software AdjustmentNoise SQL Calibration FilterTX Power Deviation HPF OFFLPF UX-910 Adjustments CP322 CP321C332 R13APC Power SETPre-setting for APC adjustment Section Parts List Front UnitDisplay Board Resistor ERA3YED Func Board VR-A BoardVR-B Board Jack Board RIT BoardMIC Board PLL UnitResistor ERA3YEB Thermistor Tantalum ECST1AD107R REG BA09T Main UnitDiode 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 BARISTOR-A Board DRV BoardVARISTOR-B Board BARISTOR-C BoardMain Unit UX-910 2UX-910MAIN UnitResistor RGB3L R15 Resister ERA3YED Tantalum ECST1CC226R CH 1H Connectot 25FMN-BTK Display Unit Mechanical PartsCover Parts Chassis PartsUX-910 Chassis Parts UnpackingUX-910 Main Unit UX-910 UnpackingTransistors and FET’S SEMI-CONDUCTOR InformationDTA114 EE TL MA29B DiodesSection 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.