Icom IC-910H service manual Func Board, VR-A Board, VR-B Board

Page 42

[DISPLAY BOARD]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

 

 

C56

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C57

4030012610

S.CERAMIC

C2012

JB 1C 474K-T-A

C71

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C72

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C73

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C74

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C75

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C86

4030012600

S.CERAMIC

C2012

JB 1A 105M-T-A

C88

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C89

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C90

4030006860

S.CERAMIC

C1608

JB 1H 102K-T-A

C94

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C119

4030007130

S.CERAMIC

C1608

CH 1H 101J-T-A

C163

4030010760

S.CERAMIC

C1608

CH 1H 331J-T-A

C164

4030010760

S.CERAMIC

C1608

CH 1H 331J-T-A

C168

4030010760

S.CERAMIC

C1608

CH 1H 331J-T-A

C181

4030010760

S.CERAMIC

C1608

CH 1H 331J-T-A

C182

4030010760

S.CERAMIC

C1608

CH 1H 331J-T-A

C204

4510006220

S.ELECTROLYTIC ECEV1CA101UP

C205

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C206

4510006220

S.ELECTROLYTIC ECEV1CA101UP

C207

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C208

4030007150

S.CERAMIC

C1608

CH 1H 151J-T-A

C209

4510007580

S.ELECTROLYTIC EEVFC1C101P

C210

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C211

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C212

4510006220

S.ELECTROLYTIC ECEV1CA101UP

C213

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C216

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C527

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C536

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C538

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C541

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C542

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C547

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C548

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C549

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C576

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C577

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

C600

4030011600

S.CERAMIC

C1608

JB 1C 104KT-N

J2

6510022570

S.CONNECTOR

06FMN-BMTTR-A-TBT

J3

6510022570

S.CONNECTOR

06FMN-BMTTR-A-TBT

J4

6510018970

S.CONNECTOR

B4B-PH-SM3-TB

J5

6510022570

S.CONNECTOR

06FMN-BMTTR-A-TBT

J6

6510022620

S.CONNECTOR

10FMN-BMTTR-A-TBT

J7

6510021720

S.CONNECTOR

30FLT-SM1-TB

J8

6510021720

S.CONNECTOR

30FLT-SM1-TB

J9

6510022540

S.CONNECTOR

20FMN-BMTTR-A-TBT

J10

6510022290

S.CONNECTOR

06FMN-BMTTR-TBT

J11

6510022290

S.CONNECTOR

06FMN-BMTTR-TBT

J12

6510022190

S.CONNECTOR

B3B-PH-SM3-TB

J14

6510018950

S.CONNECTOR

B7B-PH-SM3-TB

DS1

5040002680

S.LED

TLGE1002

DS2

5040002680

S.LED

TLGE1002

DS3

5040002680

S.LED

TLGE1002

DS4

5040002680

S.LED

TLGE1002

DS5

5040002680

S.LED

TLGE1002

DS6

5040002680

S.LED

TLGE1002

DS7

5040002680

S.LED

TLGE1002

DS8

5040002680

S.LED

TLGE1002

DS9

5040002680

S.LED

TLGE1002

DS10

5040002680

S.LED

TLGE1002

DS11

5040002680

S.LED

TLGE1002

DS12

5040002680

S.LED

TLGE1002

DS13

5040002680

S.LED

TLGE1002

DS14

5040002680

S.LED

TLGE1002

DS15

5040002680

S.LED

TLGE1002

DS16

5040002680

S.LED

TLGE1002

DS17

5040002680

S.LED

TLGE1002

DS18

5040002680

S.LED

TLGE1002

DS19

5040002680

S.LED

TLGE1002

DS20

5040002680

S.LED

TLGE1002

DS21

5040002680

S.LED

TLGE1002

DS22

5040002680

S.LED

TLGE1002

DS23

5040002680

S.LED

TLGE1002

DS24

5040002680

S.LED

TLGE1002

DS31

5030001840

LCD

A0095

 

DS32

5040001870

S.LED

SEC 2462C

 

 

 

 

 

[DISPLAY BOARD]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

DS33

5040001870

S.LED

SEC 2462C

W1

7030003860

S.JUMPER

ERJ3GE JPW V

W2

7030003860

S.JUMPER

ERJ3GE JPW V

EP1

6910012350

S.BEAD

MMZ1608Y 102BT

EP2

6910012350

S.BEAD

MMZ1608Y 102BT

EP3

6910012350

S.BEAD

MMZ1608Y 102BT

EP4

6910012350

S.BEAD

MMZ1608Y 102BT

EP5

6910012350

S.BEAD

MMZ1608Y 102BT

EP11

0910052635

PCB

B 5456E

EP31

8930052490

LCD CONTACT

SRCN-2355-SP-N-W

[FUNC BOARD]

 

 

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

D1

1160000080

S.DIODE

DAP202K T146

D2

1160000080

S.DIODE

DAP202K T146

D3

1160000080

S.DIODE

DAP202K T146

J1

6510022570

S.CONNECTOR

06FMN-BMTTR-A-TBT

EP1

0910052641

PCB

B 5458A

[VR-A BOARD]

 

 

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

R1

7210002970

VARIABLE

RV-314 (RK0972210 10KB/10KB)

J1

6510022570

S.CONNECTOR

06FMN-BMTTR-A-TBT

EP1

0910052652

PCB

B 5460B

[VR-B BOARD]

 

 

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

R1

7210002970

VARIABLE

RV-314 (RK0972210 10KB/10KB)

J1

6510022570

S.CONNECTOR

06FMN-BMTTR-A-TBT

EP1

0910053410

PCB

B 5582

S.=Surface mount

6 - 3

Image 42
Contents Service Manual Repair Notes IntroductionOrdering Parts EURTable of Contents Specifications GeneralReceiver Main and PLL Units SectionInside Views 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 UT-102 Voice Synthesizer Unit Installing 1st DSP unit front panel sideInstalling 2nd DSP unit rear panel side UT-106 DSP UnitCR-293 High Stability Crystal Unit Circuit Description Receiver CircuitSquelch Control Circuit Main Unit 6 10 MHz if Circuit Main UnitDemodulator Circuit Main Unit Squelch Circuit Main UnitAGC Circuit Main Unit Transmitter CircuitsNoise Blanker Circuit Main Unit Meter Circuit Main UnitCW Keying Circuit Main Unit Transmit if Amplifier Circuit Main UnitModulation Circuit Main Unit RF Circuit PA UnitPLL Circuits PLL Circuits 7 1LO PLL Circuit8 2LO PLL Circuit Required Test Equipment Adjustment ProceduresPreparation Before Sarvicing ‘ ConnectionsPLL Adjustments Frequency AdjustmentPLL and Main Units Receiver Adjustments L353 R547P501 L354 R360Blanker EXTNoise Main Band OFFCP851 L283L22 CP852Transmitter Adjustments R138 R503C659 R131GND If TotalMain Gain LO LeakCP1613 R504R202 R1613Software Adjustment Software Adjustment MeterNoise SQL Filter CalibrationTX Power Deviation HPF OFFLPF UX-910 Adjustments C332 CP321CP322 R13Power SET APCPre-setting for APC adjustment Section Parts List Front UnitDisplay Board Resistor ERA3YED Func Board VR-A BoardVR-B Board MIC Board RIT BoardJack 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 VARISTOR-B Board DRV BoardBARISTOR-A Board BARISTOR-C Board2UX-910MAIN Unit Main Unit UX-910Resistor RGB3L R15 Resister ERA3YED Tantalum ECST1CC226R CH 1H Connectot 25FMN-BTK Cover Parts Mechanical PartsDisplay Unit Chassis PartsUX-910 Main Unit UnpackingUX-910 Chassis Parts 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.