This service manual describes the latest service information for the IC-M710RT MF/HF MARINE Transceiver at the time of publication. TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 CIRCUIT DESCRIPTION 3 - 1 Receiver CIRCUITS... 3 - 1 3 - 2 Transmitter CIRCUITS... 3 - 3 3 - 3 PLL CIRCUITS... 3 - 6 3 - 4 PORT ALLOCATIONS ... 3 - 6 SECTION 4 ADJUSTMENT PROCEDURES 4 - 1 PREPARATION BEFORE SERVICING ... 4 - 1 4 - 2 INTERFACE ADJUSTMENTS ... 4 - 2 4 - 3 PLL ADJUSTMENT... 4 - 3 4 - 4 Transmitter ADJUSTMENT... 4 - 4 4 - 5 Receiver ADJUSTMENT... 4 - 8 SECTION 5 PARTS LIST SECTION 6 MECHANICAL PARTS AND DISASSEMBLY SECTION 7 SEMI-CONDUCTOR INFORMATION SECTION 8 BOARD LAYOUTS 8 - 1 RC-21 8 - 1 - 1 LOGIC BOARD... 8 - 1 8 - 1 - 2 SENSOR 1/2 BOARDS ... 8 - 3 8 - 1 - 3 MIC BOARD... 8 - 3 8 - 1 - 4 VR1 BOARD ... 8 - 3 8 - 1 - 5 VR2 BOARD ... 8 - 3 8 - 1 - 6 CTRL1 BOARD... 8 - 4 8 - 2 IC-M710RT 8 - 2 - 1 CTRL2 BOARD... 8 - 5 8 - 2 - 2 TERMINAL UNIT ... 8 - 5 8 - 2 - 3 FILTER BOARD... 8 - 6 8 - 2 - 4 MAIN BOARD ... 8 - 7 8 - 2 - 5 ALARM BOARD... 8 - 7 8 - 2 - 6 PLL UNIT ... 8 - 8 8 - 2 - 7 PA150W BOARD ... 8 - 9 SECTION 9 BLOCK DIAGRAM SECTION 10 VOLTAGE DIAGRAM