Icom IC-910H service manual DRV Board, BARISTOR-A Board, VARISTOR-B Board, BARISTOR-C Board

Page 63

[PA UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

F300

5210000130

FUSE

FGB 4A

F301

5220000230

HOLDER

S-N5054 #01

F302

5220000230

HOLDER

S-N5054 #01

W3

7030003860

S.JUMPER

ERJ3GE JPW V

W5

7030003860

S.JUMPER

ERJ3GE JPW V

W7

7030003860

S.JUMPER

ERJ3GE JPW V

W60

7030008240

S.JUMPER

ERJ12YJ0R00U

W61

7030008240

S.JUMPER

ERJ12YJ0R00U

W62

7030008240

S.JUMPER

ERJ12YJ0R00U

W63

7030008240

S.JUMPER

ERJ12YJ0R00U

W64

7030000010

S.JUMPER

MCR10EZHJ JPW (000)

W202

7030008240

S.JUMPER

ERJ12YJ0R00U

W232

7030003860

S.JUMPER

ERJ3GE JPW V

W261

7030008240

S.JUMPER

ERJ12YJ0R00U

W262

7030008240

S.JUMPER

ERJ12YJ0R00U

W305

8900010421

CABLE

OPC-992A

W331

7030003860

S.JUMPER

ERJ3GE JPW V

W332

7030003860

S.JUMPER

ERJ3GE JPW V

W333

7030003860

S.JUMPER

ERJ3GE JPW V

W513

7030008240

S.JUMPER

ERJ12YJ0R00U

W520

7030008240

S.JUMPER

ERJ12YJ0R00U

W521

7030008240

S.JUMPER

ERJ12YJ0R00U

W557

7030003860

S.JUMPER

ERJ3GE JPW V

W558

7030003860

S.JUMPER

ERJ3GE JPW V

W559

7030003860

S.JUMPER

ERJ3GE JPW V

W951

7030000010

S.JUMPER

MCR10EZHJ JPW (000)

W952

7030003860

S.JUMPER

ERJ3GE JPW V

WS1

8970023780

E.OTHER

SX2355 1.5D COAXIAL TUBE (1)/PA

WS2

8970023790

E.OTHER

SX2355 1.5D COAXIAL TUBE (1)/PA

WS3

8970023800

E.OTHER

SX2355 1.5D COAXIAL TUBE (2)/PA

WS5

8600036730

E.OTHER

SX2355 P50J50PA

WS6

8970023820

E.OTHER

SX2355 COAXIAL TUBE (1)/PA

WS7

8600036740

E.OTHER

SX2355 P300J600-603PA

EP2

0910053576

PCB

B 5573F

EP31

6910012350

S.BEAD

MMZ1608Y 102BT

EP32

6910012350

S.BEAD

MMZ1608Y 102BT

EP50

6910012350

S.BEAD

MMZ1608Y 102BT

EP51

6910012350

S.BEAD

MMZ1608Y 102BT

EP52

6910012350

S.BEAD

MMZ1608Y 102BT

EP53

6910012350

S.BEAD

MMZ1608Y 102BT

EP54

6910012350

S.BEAD

MMZ1608Y 102BT

EP55

6910012350

S.BEAD

MMZ1608Y 102BT

EP56

6910012350

S.BEAD

MMZ1608Y 102BT

EP61

6910012350

S.BEAD

MMZ1608Y 102BT

EP153

6910000610

BEAD

FSOH050RN01

EP154

6910000610

BEAD

FSOH050RN01

EP181

6910012350

S.BEAD

MMZ1608Y 102BT

EP193

6910012350

S.BEAD

MMZ1608Y 102BT

EP195

6910012350

S.BEAD

MMZ1608Y 102BT

EP201

6910012350

S.BEAD

MMZ1608Y 102BT

EP220

6910012350

S.BEAD

MMZ1608Y 102BT

EP221

6910012350

S.BEAD

MMZ1608Y 102BT

EP243

6910012350

S.BEAD

MMZ1608Y 102BT

EP245

6910012350

S.BEAD

MMZ1608Y 102BT

EP290

6910012350

S.BEAD

MMZ1608Y 102BT

EP330

6910012350

S.BEAD

MMZ1608Y 102BT

EP341

6910012350

S.BEAD

MMZ1608Y 102BT

EP342

6910012350

S.BEAD

MMZ1608Y 102BT

EP401

6910012350

S.BEAD

MMZ1608Y 102BT

EP406

6910012350

S.BEAD

MMZ1608Y 102BT

EP517

6910012350

S.BEAD

MMZ1608Y 102BT

EP561

6910012350

S.BEAD

MMZ1608Y 102BT

EP562

6910012350

S.BEAD

MMZ1608Y 102BT

EP563

6910012350

S.BEAD

MMZ1608Y 102BT

EP564

6910012350

S.BEAD

MMZ1608Y 102BT

EP565

6910012350

S.BEAD

MMZ1608Y 102BT

EP566

6910012350

S.BEAD

MMZ1608Y 102BT

EP567

6910012350

S.BEAD

MMZ1608Y 102BT

EP568

6910012350

S.BEAD

MMZ1608Y 102BT

EP569

6910012350

S.BEAD

MMZ1608Y 102BT

EP911

6910012350

S.BEAD

MMZ1608Y 102BT

 

 

 

 

[DRV BOARD]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

Q930

1560001030

S.FET

2SK2975 (MTS103)

R90

7030010140

S.RESISTOR

ERJ1WYJ201U (200 )

R91

7030000230

S.RESISTOR

MCR10EZHJ 56 (560)

C90

4030004710

S.CERAMIC

C2012 JB 1H 471K-T-A

C91

4030004720

S.CERAMIC

C2012 JB 1H 102K-T-A

EP1

0910052723

PCB

B 5474C

[BARISTOR-A BOARD]

 

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

D1

1790000710

VARISTOR

MA29B

EP1

0910053583

PCB

B 5576C

EP2

6910012350

S.BEAD

MMZ1608Y 102BT

[VARISTOR-B BOARD]

 

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

D1

1790000710

VARISTOR

MA29B

EP1

0910053593

PCB

B 5577C

EP2

6910012350

S.BEAD

MMZ1608Y 102BT

[BARISTOR-C BOARD]

 

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

D1

1790000710

VARISTOR

MA29B

C1

4030006860

S.CERAMIC

C1608 JB 1H 102K-T-A

EP1

0910053601

PCB

B 5578A

EP2

9036505001

TUBE

IRRAX 0.7 (d) L=15 mm

S.=Surface mount

6 - 24

Image 63
Contents Service Manual EUR IntroductionOrdering Parts Repair NotesTable of Contents General SpecificationsReceiver FM if IC SectionInside Views Main and PLL UnitsPA 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 UT-106 DSP Unit Installing 1st DSP unit front panel sideInstalling 2nd DSP unit rear panel side UT-102 Voice Synthesizer UnitCR-293 High Stability Crystal Unit Receiver Circuit Circuit DescriptionSquelch Circuit Main Unit 6 10 MHz if Circuit Main UnitDemodulator Circuit Main Unit Squelch Control Circuit Main UnitMeter Circuit Main Unit Transmitter CircuitsNoise Blanker Circuit Main Unit AGC Circuit Main UnitRF Circuit PA Unit Transmit if Amplifier Circuit Main UnitModulation Circuit Main Unit CW Keying Circuit Main UnitPLL Circuits PLL Circuits 7 1LO PLL Circuit8 2LO PLL Circuit ‘ Connections Adjustment ProceduresPreparation Before Sarvicing Required Test EquipmentFrequency Adjustment PLL AdjustmentsPLL and Main Units Receiver Adjustments L354 R360 R547P501 L353Main Band OFF EXTNoise BlankerCP852 L283L22 CP851Transmitter Adjustments R131 R503C659 R138LO Leak If TotalMain Gain GNDR1613 R504R202 CP1613Software Adjustment Meter Software AdjustmentNoise SQL Calibration FilterTX Power Deviation HPF OFFLPF UX-910 Adjustments R13 CP321CP322 C332APC Power SETPre-setting for APC adjustment Section Parts List Front UnitDisplay Board Resistor ERA3YED Func Board VR-A BoardVR-B Board PLL Unit RIT BoardJack Board MIC BoardResistor 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-C Board DRV BoardBARISTOR-A Board VARISTOR-B BoardMain Unit UX-910 2UX-910MAIN UnitResistor RGB3L R15 Resister ERA3YED Tantalum ECST1CC226R CH 1H Connectot 25FMN-BTK Chassis Parts Mechanical PartsDisplay Unit Cover PartsUX-910 Unpacking UnpackingUX-910 Chassis Parts UX-910 Main UnitTransistors 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.