Manuals / Icom / Communications / Two-Way Radio

Icom IC-F21S service manual Main Unit, Order, Description

Models: IC-F21S

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[MAIN UNIT]

REF	ORDER		DESCRIPTION
NO.	NO.		DESCRIPTION
NO.	NO.

C261	4030007090	S.CERAMIC	C1608 CH 1H 470J-T-A
J1	6910013720	CONNECTOR	IMSA-9230B-04Z120-T	[F21] only
J2	6910013730	CONNECTOR	IMSA-9230B-07Z120-T
J3	6510021900	S.CONNECTOR BM02B-ASRS-TF
J4	6450001680	CONNECTOR	HSJ1122-010010
J5	6450001690	CONNECTOR	HSJ1456-01-220
MC1	7700002160	MICROPHON	KUC3523-040245
S1	2230001060	S.SWITCH	EVQ-PUL 02K
S2	2230001060	S.SWITCH	EVQ-PUL 02K
S3	2230001060	S.SWITCH	EVQ-PUL 02K
W2	7030003860	S.JUMPER	ERJ3GE JPW V
W4	7030003860	S.JUMPER	ERJ3GE JPW V
W8	7030003860	S.JUMPER	ERJ3GE JPW V
W12	7030003860	S.JUMPER	ERJ3GE JPW V	[F21S] only
W13	7030003860	S.JUMPER	ERJ3GE JPW V	[F21S] only
W14	7030003860	S.JUMPER	ERJ3GE JPW V
EP1	0910053693	PCB	B 5601C
EP2	6910013370	S.BEAD	BLM11B221SB
EP3	6910013370	S.BEAD	BLM11B221SB
EP4	6910013370	S.BEAD	BLM11B221SB
EP5	6910013370	S.BEAD	BLM11B221SB
EP6	6910013370	S.BEAD	BLM11B221SB
EP7	6910013370	S.BEAD	BLM11B221SB	[F21S] only

S.=Surface mount

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Icom IC-F21S service manual Main Unit, Order, Description

Contents

UHF FM TRANSCEIVERS SERVICE MANUALORDERING PARTS INTRODUCTIONDANGER REPAIR NOTESTABLE OF CONTENTS ‘ TRANSMITTER SECTION 1 SPECIFICATIONS‘ GENERAL ‘ RECEIVERMAIN UNIT TOP VIEW SECTION 2 INSIDE VIEWSBOTTOM VIEW REMOVING THE CHASSIS SECTION 3 DISASSEMBLY INSTRUCTIONSREMOVING THE MAIN UNIT 4-1-1 ANTENNA SWITCHING CIRCUIT SECTION 4 CIRCUIT DESCRIPTION4-1 RECEIVER CIRCUITS 4-1-4 2ND IF AND DEMODULATOR CIRCUITS4-1-6 SQUELCH CIRCUIT 4-2 TRANSMITTER CIRCUITS4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS 4-2-1 MICROPHONE AMPLIFIER CIRCUIT4-3-2 TX LOOP 4-3 PLL CIRCUIT4-3-1 GENERAL 4-3-3 RX LOOP4-5-1 CPU IC7 4-5 PORT ALLOCATIONS4-4 POWER SUPPLY CIRCUITS VOLTAGE LINE LINE4-5-3 D/A CONVERTOR IC IC9 CPU IC7-continued4-5-2 OUTPUT EXPANDER IC IC15 PortSTARTING SOFTWARE ADJUSTMENT SECTION 5 ADJUSTMENT PROCEDURES5-1 PREPARATION ADJUSTMENT SOFTWARE INSTALLATIONJIG cable RF Power HighScreen display exampe CH NoConnection DC power cable connectionsOPC-478 ADJUSTMENT CONDITIONS 5-2 PLL ADJUSTMENTADJUSTMENT ADJUSTMENTADJUSTMENT CONDITION 5-3 SOFTWARE ADJUSTMENTADJUSTMENT MEASUREMENTADJUSTMENT CONDITION SOFTWARE ADJUSTMENT - continuedADJUSTMENT MEASUREMENTSW-A UNIT F21 only PARTS LISTSECTION UNIT F21S onlyORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITDESCRIPTION CHASSIS PARTS SECTION 7 MECHANICAL PARTS AND DISASSEMBLYACCESSORIES MAIN UNITIC-F21S UNIT abbreviation C CHASSIS PARTS, M MAIN UNITTRANSISTOR AND FET’S SECTION 8 SEMI-CONDUCTOR INFORMATIONDIODES B5601C SECTION 9 BOARD LAYOUTS9-1 MAIN UNIT TOP VIEWBOTTOM VIEW IC11TOP VIEW SW-A UNIT 9-2 SW-A AND SW-B UNITSB5603C SW-B UNITto the MAIN unit J1 B5604CBOTTOM VIEW SW-A UNIT SW-B UNITSECTION 10 BC-146 OPTIONAL DESKTOP CHARGER INFORMATION 10-1 PARTS LIST10-2 DISASSEMBLY INFORMATION CHARGE UNITB5650 10-3 VOLTAGE DIAGRAMMP1 MP2 10-4 BOARD LAYOUTSW-A/SW-B UNIT S1 SECTION 11 BLOCK DIAGRAMMAIN UNIT EXT.MICSECTION 12 VOLTAGE DIAGRAM 12-1 MAIN UNITSDEC SECTION VOLTAGE DIAGRAM12-1 MAIN UNIT SW-A UNIT CHASSIS UNIT12-2 SW-A AND SW-B UNITS SW-B UNITPage S-13717IZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan2001 Icom Inc