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Icom IC F110S, IC F111S, IC F121S service manual

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SERVICE

MANUAL

VHF TRANSCEIVER

iF110S

iF111S

iF121S

Contents

Main INTRODUCTION DANGER ORDERING PARTS REPAIR NOTES TABLE OF CONTENTS EXPLICIT DEFINITIONS SECTION 1 SPECIFICATIONS [GEN], [USA] [EUR] RECEIVER TRANSMITTER GENERAL SECTION 2 INSIDE VIEW SECTION 3 DISASSEMBLY INSTRUCTIONS SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT 4-1-2 RF CIRCUIT (MAIN UNIT) 4-1-3 1ST MIXER AND 1ST IF CIRCUITS 4-2 TRANSMITTER CIRCUITS 4-2-1 MICROPHONE AMPLIFIER CIRCUIT (MAIN AND FRONT UNITS) 4-2-2 MODULATION CIRCUIT (MAIN UNIT) 4-2-3 DRIVE AMPLIFIER CIRCUIT (MAIN UNIT) 4-2-4 POWER AMPLIFIER CIRCUIT (MAIN UNIT) 4-3 PLL CIRCUITS 4-3-1 PLL CIRCUIT (MAIN UNIT) 4-3-2 VCO CIRCUIT (MAIN UNIT) PLL circuit 4-4 POWER SUPPLY CIRCUITS 4-4-1 VOLTAGE LINES (MAIN UNIT) 4-5-2 OUTPUT EXPANDER (MAIN UNIT; IC6) 4-5 PORT ALLOCATIONS 4-5-1 LED DRIVER (FRONT UNIT; IC4) CPU-Continued SECTION 5 ADJUSTMENT PROCEDURES + 5-1 PREPARATION SYSTEM REQUIREMENTS ADJUSTMENT SOFTWARE INSTALLATION Connections REQUIRED TEST EQUIPMENT NOTE: LV C133 C134 5-2 PLL ADJUSTMENT 5-3 SOFTWARE ADJUSTMENT SOFTWARE ADJUSTMENT continued CONVENIENT: R59 5-4 TRIMMER ADJUSTMENT [FRONT UNIT][FRONT UNIT] 6 - 1 SECTION 6 PARTS LIST [MAIN UNIT][FRONT UNIT] 6 - 2 6 - 3 6 - 4 6 - 5 6 - 6 SECTION 7 MECHANICAL PARTS 7 - 1 [CHASSIS PARTS] Self-tapping Screw abbreviations A,BT: Page SECTION 8 SEMI-CONDUCTOR INFORMATION TRANSISTORS AND FETS DIODES 8 - 1 (Symbol: B0)(Symbol: N)(Symbol: K)(Symbol: TC)(Symbol: FH) (Symbol: A)(Symbol: B9)(Symbol: B8)(Symbol: V2) SECTION 9 BOARD LAYOUTS 9-1 FRONT UNIT 9 - 1 BOTTOM VIEW (FRONT UNIT) ANT CHASSIS J1 to DC cable W2 9 - 3 9-2 MAIN UNIT T OP VIEW SP BOTTOM VIEW (MAIN UNIT) SECTION 10 BLOCK DIAGRAM MAIN UNIT 10 - 1 OPTION Explanatory notes SECTION 11 VOLTAGE DIAGRAMS 11-1 FRONT UNIT 11 - 1 FRONT UNIT 11-2 MAIN UNIT MAIN UNIT (1) 11 - 2 FRONT UNIT (2) 11 - 3 MAIN UNIT (2) Page Page Page INTRODUCTION DANGER ORDERING PARTS REPAIR NOTES TABLE OF CONTENTS EXPLICIT DEFINITIONS SECTION 1 SPECIFICATIONS [GEN], [USA] [EUR] RECEIVER TRANSMITTER GENERAL SECTION 2 INSIDE VIEW SECTION 3 DISASSEMBLY INSTRUCTIONS SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS MAIN UNIT 4-1-1 ANTENNA SWITCHING CIRCUIT ( ) 4-2 TRANSMITTER CIRCUITS 4-2-1 MICROPHONE AMPLIFIER CIRCUIT (MAIN AND FRONT UNITS) 4-2-2 MODULATION CIRCUIT (MAIN UNIT) 4-2-3 DRIVE AMPLIFIER CIRCUIT (MAIN UNIT) 4-2-4 POWER AMPLIFIER CIRCUIT (MAIN UNIT) 4-3 PLL CIRCUITS 4-3-1 PLL CIRCUIT (MAIN UNIT) 4-3-2 VCO CIRCUIT (MAIN UNIT) PLL circuit 4-4 POWER SUPPLY CIRCUITS 4-4-1 VOLTAGE LINES (MAIN UNIT) 4-5-2 OUTPUT EXPANDER (MAIN unit; IC6) 4-5 PORT ALLOCATIONS 4-5-1 LED DRIVER (FRONT UNIT; IC4) CPU-Continued SECTION 5 ADJUSTMENT PROCEDURES + 5-1 PREPARATION SYSTEM REQUIREMENTS ADJUSTMENT SOFTWARE INSTALLATION Connections REQUIRED TEST EQUIPMENT NOTE: 5-2 PLL ADJUSTMENT 5-3 SOFTWARE ADJUSTMENT SOFTWARE ADJUSTMENT continued CONVENIENT: R59 5-4 TRIMMER ADJUSTMENT [FRONT UNIT][FRONT UNIT] 6 - 1 SECTION 6 PARTS LIST [MAIN UNIT][FRONT UNIT] 6 - 2 6 - 3 6 - 4 6 - 5 6 - 6 SECTION 7 MECHANICAL PARTS 7 - 1 [CHASSIS PARTS] [FRONT UNIT] [ACCESSORIES] Page SECTION 8 SEMI-CONDUCTOR INFORMATION TRANSISTORS AND FETS DIODES 8 - 1 (Symbol: 5-6) (Symbol: none) MA8056 M UM9401F SECTION 9 BOARD LAYOUTS 9-1 FRONT UNIT 9 - 1 BOTTOM VIEW (FRONT UNIT) ANT CHASSIS J1 to DC cable W2 9 - 3 IC3 EP3 EP2 9-2 MAIN UNIT SP BOTTOM VIEW (MAIN UNIT) SECTION 10 BLOCK DIAGRAM MAIN UNIT 10 - 1 OPTION Explanatory notes SECTION 11 VOLTAGE DIAGRAMS 11-1 FRONT UNIT 11 - 1 FRONT UNIT 11-2 MAIN UNIT MAIN UNIT (1) 11 - 2 FRONT UNIT (2) 11 - 3 MAIN UNIT (2)