Icom IC-F50, IC-F51 service manual Icom America Inc

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1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan Phone : +81 (06) 6793 5302

Fax : +81 (06) 6793 0013

URL : http://www.icom.co.jp/world/index.html

Icom America Inc.

<Corporate Headquarters>

2380 116th Avenue N.E., Bellevue, WA 98004, U.S.A.

Phone : +1 (425) 454-8155 Fax : +1 (425) 454-1509

URL : http://www.icomamerica.com

E-mail : sales@icomamerica.com <Customer Service>

Phone : +1 (425) 454-7619

Icom Canada

Glenwood Centre #150-6165

Highway 17 Delta, B.C., V4K 5B8, Canada

Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090

URL : http://www.icomcanada.com

E-mail : info@icomcanada.com

Icom (Australia) Pty. Ltd.

A.B.N. 88 006 092 575

290-294 Albert Street, Brunswick, Victoria, 3056, Australia

Phone : +61 (03) 9387-0666 Fax : +61 (03) 9387-0022

URL : http://www.icom.net.au

E-mail : sales@icom.net.au

Icom New Zealand

146A Harris Road, East Tamaki, Auckland, New Zealand

Phone : +64 (09) 274 4062 Fax : +64 (09) 274 4708

URL : http://www.icom.co.nz

E-mail : inquiries@icom.co.nz

Icom (Europe) GmbH

Communication Equipment

Himmelgeister Str. 100, D-40225 Dusseldorf, Germany

Phone : +49 (0211) 346047 Fax : +49 (0211) 333639

URL : http://www.icomeurope.com

E-mail : info@icomeurope.com

Icom Spain S.L

Crta. de Gracia a Manresa Km. 14,750

08190 Sant Cugat del Valles Barcelona, SPAIN

Phone : +34 (93) 590 26 70 Fax : +34 (93) 589 04 46

URL : http://www.icomspain.com

E-mail : icom@icomspain.com

Icom (UK) Ltd.

Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K.

Phone : +44 (01227) 741741 Fax : +44 (01227) 741742

URL : http://www.icomuk.co.uk

E-mail : info@icomuk.co.uk

Icom France S.a

Zac de la Plaine, 1, Rue Brindejonc des Moulinais BP 5804, 31505 Toulouse Cedex, France

Phone : +33 (5) 61 36 03 03 Fax : +33 (5) 61 36 03 00

URL : http://www.icom-france.com

E-mail : icom@icom-france.com

Asia Icom Inc.

6F No.68, Sec. 1 Cheng-Teh Road, Taipei, Taiwan, R.O.C.

Phone : +886 (02) 2559 1899 Fax : +886 (02) 2559 1874

URL : http://www.asia-icom.com

E-mail : sales@asia-icom.com

Beijing Icom Ltd.

 

Icom Polska

 

1305, Wanshang Plaza, Shijingshan Road, Beijing China

Sopot, 3 Maja 54 Poland

 

Phone : +86 (010) 6866 6337

Fax : +86 (010) 6866 3553

Phone : +48 (58) 550 7135

Fax : +48 (58) 551 0484

URL : http://www.bjicom.com

 

E-mail : icompolska@icompolska.com.pl

E-mail : bjicom@bjicom.com

 

 

 

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Contents VHF Transceiver Ordering Parts IntroductionRepair Notes Table of Contents ‘ General Specifications‘ Transmitter ‘ ReceiverMain Unit Inside ViewsFront Unit Removing the Chassis Unit Disassembly InstructionsRemoving the Front Unit Removing the Main UnitReceiver Circuits Antenna Switching Circuit Main UnitRF Circuit Main Unit 3 1ST Mixer and 1ST if Circuits Main UnitAF Amplifier Circuit Main and Front Units Transmitter CircuitsReceive Mute Circuits Main and Front Units Microphone Amplifier Circuit Front and Main UnitsPLL Circuits DRIVE/POWER Amplifier CircuitsModulation Circuit Main Unit APC Circuit Main UnitVCO Circuit Main Unit Power Supply CircuitMain Unit Voltage Line Front Unit Voltage LinePort Allocations Other CircuitsCompounder Circuit Main Unit Expander IC Front Unit IC410SCK SEG1Mdio MsckExpander IC Main Unit IC12 4 D/A Converter IC Main Unit IC6Preparation Frequency Adjustment Item Adjustment Frequency ListScreen Display Example CtcssJIG Cable ConnectionPtte PTT MIC Mice SP+Software Adjustments Transmitting Convenient Software Adjustments ReceivingVR Board Connector BoardFront Unit IC9 Main UnitVaricap HVC375BTRF Themistor Ertjoep 473J Ceramic ECJ0EC1H0R5B Mechanical Parts and Disassembly Unitmm inch Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Main Unit Board LayoutsTOP View Q23 Bottom ViewJ402 Front UnitMC401 VR Board VHF B6034BMP701 Connector BoardCPU Section Block Diagram2SC4116BL Voltage DiagramTC7W66FK 11-3 VR / Connector Boards VR Board Icom America Inc 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan