Icom IC-910H service manual Diode DAN222TL

Page 48

[MAIN UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

Q707

1590001660

S.TRANSISTOR

XP4312 (TX)

Q751

1590001660

S.TRANSISTOR

XP4312 (TX)

Q752

1590001660

S.TRANSISTOR

XP4312 (TX)

Q753

1590001660

S.TRANSISTOR

XP4312 (TX)

Q801

1540000550

S.TRANSISTOR

2SD1664 T100Q

Q804

1540000470

S.TRANSISTOR

2SD1801S-TL

Q805

1590001660

S.TRANSISTOR

XP4312 (TX)

Q806

1590000430

S.TRANSISTOR

DTC144EUA T106

Q807

1510000770

S.TRANSISTOR

2SA1586-GR (TE85R)

Q808

1590000430

S.TRANSISTOR

DTC144EUA T106

Q809

1590001660

S.TRANSISTOR

XP4312 (TX)

Q810

1510000770

S.TRANSISTOR

2SA1586-GR (TE85R)

Q811

1510000670

S.TRANSISTOR

2SA1588-GR (TE85R)

Q812

1590000430

S.TRANSISTOR

DTC144EUA T106

Q813

1510000670

S.TRANSISTOR

2SA1588-GR (TE85R)

Q814

1590000430

S.TRANSISTOR

DTC144EUA T106

Q815

1510000670

S.TRANSISTOR

2SA1588-GR (TE85R)

Q816

1530002690

S.TRANSISTOR

2SC4116-GR (TE85R)

Q817

1530002690

S.TRANSISTOR

2SC4116-GR (TE85R)

Q831

1590000430

S.TRANSISTOR

DTC144EUA T106

Q850

1530002690

S.TRANSISTOR

2SC4116-GR (TE85R)

Q851

1580000540

S.FET

3SK131-T2-LA

Q852

1580000540

S.FET

3SK131-T2-LA

Q901

1530002690

S.TRANSISTOR

2SC4116-GR (TE85R)

Q902

1530002690

S.TRANSISTOR

2SC4116-GR (TE85R)

Q903

1590001660

S.TRANSISTOR

XP4312 (TX)

Q904

1590001660

S.TRANSISTOR

XP4312 (TX)

Q905

1590001660

S.TRANSISTOR

XP4312 (TX)

Q951

1590001660

S.TRANSISTOR

XP4312 (TX)

Q952

1560000840

S.FET

2SK1829 (TE85R)

Q953

1590001650

S.TRANSISTOR

XP4601 (TX)

Q1001

1560000840

S.FET

2SK1829 (TE85R)

Q1002

1550000010

S.FET

2SJ364-Q (TX)

Q1561

1590001660

S.TRANSISTOR

XP4312 (TX)

Q1571

1590001660

S.TRANSISTOR

XP4312 (TX)

Q1581

1590000430

S.TRANSISTOR

DTC144EUA T106

Q1582

1540000440

S.TRANSISTOR

2SD1619-T-TD

Q1583

1590000680

S.TRANSISTOR

DTC114EUA T106

Q1584

1590001330

S.TRANSISTOR

DTA114EUA T106

Q1651

1530002690

S.TRANSISTOR

2SC4116-GR (TE85R)

Q1855

1590000680

S.TRANSISTOR

DTC114EUA T106

D1

1790000620

S.DIODE

MA77 (TX)

D2

1790000620

S.DIODE

MA77 (TX)

D21

1750000550

S.DIODE

1SS355 TE-17

D51

1790000620

S.DIODE

MA77 (TX)

D52

1790000620

S.DIODE

MA77 (TX)

D53

1790000620

S.DIODE

MA77 (TX)

D54

1790000620

S.DIODE

MA77 (TX)

D55

1790000620

S.DIODE

MA77 (TX)

D101

1790001210

S.DIODE

1SS375-TL

D151

1790000620

S.DIODE

MA77 (TX)

D152

1790000620

S.DIODE

MA77 (TX)

D153

1790000620

S.DIODE

MA77 (TX)

D154

1790000620

S.DIODE

MA77 (TX)

D155

1790000620

S.DIODE

MA77 (TX)

D156

1790000620

S.DIODE

MA77 (TX)

D157

1790000620

S.DIODE

MA77 (TX)

D158

1790000620

S.DIODE

MA77 (TX)

D159

1790000620

S.DIODE

MA77 (TX)

D161

1790000620

S.DIODE

MA77 (TX)

D162

1790000620

S.DIODE

MA77 (TX)

D201

1750000550

S.DIODE

1SS355 TE-17

D202

1790000620

S.DIODE

MA77 (TX)

D203

1790000620

S.DIODE

MA77 (TX)

D204

1750000550

S.DIODE

1SS355 TE-17

D205

1750000520

S.DIODE

DAN222TL

D206

1750000520

S.DIODE

DAN222TL

D207

1750000550

S.DIODE

1SS355 TE-17

D252

1790000620

S.DIODE

MA77 (TX)

D253

1720000270

S.VARICAP

1SV217 (TPH2)

D302

1790000660

S.DIODE

MA728 (TX)

D303

1790001210

S.DIODE

1SS375-TL

D304

1790000660

S.DIODE

MA728 (TX)

D305

1790000660

S.DIODE

MA728 (TX)

D352

1790000620

S.DIODE

MA77 (TX)

D401

1750000520

S.DIODE

DAN222TL

D402

1750000520

S.DIODE

DAN222TL

D491

1750000550

S.DIODE

1SS355 TE-17

D651

1790000620

S.DIODE

MA77 (TX)

D652

1790000620

S.DIODE

MA77 (TX)

 

 

 

 

[MAIN UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

D653

1790000620

S.DIODE

MA77 (TX)

D701

1790001210

S.DIODE

1SS375-TL

D751

1790000620

S.DIODE

MA77 (TX)

D752

1790000620

S.DIODE

MA77 (TX)

D753

1790000620

S.DIODE

MA77 (TX)

D754

1790000620

S.DIODE

MA77 (TX)

D755

1790000620

S.DIODE

MA77 (TX)

D756

1790000620

S.DIODE

MA77 (TX)

D757

1790000620

S.DIODE

MA77 (TX)

D758

1790000620

S.DIODE

MA77 (TX)

D759

1790000620

S.DIODE

MA77 (TX)

D761

1790000620

S.DIODE

MA77 (TX)

D762

1790000620

S.DIODE

MA77 (TX)

D804

1750000370

S.DIODE

DA221 TL

D805

1750000550

S.DIODE

1SS355 TE-17

D806

1160000140

S.DIODE

DAP222 TL

D807

1750000370

S.DIODE

DA221 TL

D902

1790001210

S.DIODE

1SS375-TL

D903

1790000660

S.DIODE

MA728 (TX)

D904

1790000660

S.DIODE

MA728 (TX)

D905

1790000660

S.DIODE

MA728 (TX)

D951

1750000520

S.DIODE

DAN222TL

D952

1750000520

S.DIODE

DAN222TL

D1041

1750000550

S.DIODE

1SS355 TE-17

D1301

1750000520

S.DIODE

DAN222TL

D1351

1750000520

S.DIODE

DAN222TL

D1601

1750000550

S.DIODE

1SS355 TE-17

D1602

1160000140

S.DIODE

DAP222 TL

D1603

1750000550

S.DIODE

1SS355 TE-17

D1605

1750000550

S.DIODE

1SS355 TE-17

D1606

1790001010

S.ZENER

MA8043-L (TX)

D1607

1730002580

S.ZENER

MA8047-H (TX)

D1608

1750000370

S.DIODE

DA221 TL

D1609

1790000620

S.DIODE

MA77 (TX)

D1610

1750000550

S.DIODE

1SS355 TE-17

D1652

1790000660

S.DIODE

MA728 (TX)

D1701

1790001210

S.DIODE

1SS375-TL

D1801

1750000550

S.DIODE

1SS355 TE-17

D1802

1750000550

S.DIODE

1SS355 TE-17

D1821

1790000660

S.DIODE

MA728 (TX)

D1822

1790000660

S.DIODE

MA728 (TX)

D1851

1750000550

S.DIODE

1SS355 TE-17

FI51

2010001730

FILTER

FL-211 (10.850 MHz)

FI151

2010001080

FILTER

FL-128 (10M22D6)

FI311

2020001330

CERAMIC

CFWS455HT

FI312

2020001040

CERAMIC

CFWS455E

FI511

2020001330

CERAMIC

CFWS455HT

FI512

2020001040

CERAMIC

CFWS455E

FI651

2010001740

FILTER

FL-212 (10.950 MHz)

FI751

2010001090

FILTER

FL-129 (10M22D7)

X251

6050008700

XTAL

CR-451 (10.8550 MHz)

X401

6070000130

DISCRIMINATOR

CDBM455C24

X951

6070000130

DISCRIMINATOR

CDBM455C24

L1

6200002040

S.COIL

NL 252018T-101J

L2

6150004200

COIL

LS-479

L3

6150004170

COIL

LS-476

L51

6150004210

COIL

LS-480

L52

6150004210

COIL

LS-480

L53

6150004170

COIL

LS-476

L102

6150004880

S.COIL

LS-513

L103

6150004880

S.COIL

LS-513

L201

6200002040

S.COIL

NL 252018T-101J

L202

6200005040

S.COIL

NL 252018T-220J

L203

6200005040

S.COIL

NL 252018T-220J

L204

6200002040

S.COIL

NL 252018T-101J

L251

6200002040

S.COIL

NL 252018T-101J

L252

6200005010

S.COIL

NL 252018T-100J

L253

6200005010

S.COIL

NL 252018T-100J

L254

6200003130

S.COIL

NL 322522T-120J

L255

6150002040

COIL

LS-256

L352

6150004200

COIL

LS-479

L353

6150004210

COIL

LS-480

L354

6150004170

COIL

LS-476

L355

6200002040

S.COIL

NL 252018T-101J

L401

6200002040

S.COIL

NL 252018T-101J

L651

6150004210

COIL

LS-480

 

 

 

 

S.=Surface mount

6 - 9

Image 48
Contents Service Manual Introduction Ordering PartsRepair Notes EURTable of Contents Specifications GeneralReceiver Section Inside ViewsMain 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 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 PLL Circuits 7 1LO PLL Circuit8 2LO 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 Deviation HPF OFFLPF UX-910 Adjustments CP321 CP322C332 R13Power SET APCPre-setting for APC adjustment Section Parts List Front UnitDisplay Board Resistor ERA3YED Func Board VR-A BoardVR-B 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.