Icom IC-T90A Marine Radio User Manual


 
TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4 - 1 RECEIVER CIRCUITS ................................................................................................... 4 - 1
4 - 2 TRANSMITTER CIRCUITS ............................................................................................ 4 - 4
4 - 3 PLL CIRCUITS................................................................................................................. 4 - 5
4 - 4 POWER SUPPLY CIRCUITS .......................................................................................... 4 - 7
4 - 5 PORT ALLOCATIONS..................................................................................................... 4 - 7
SECTION 5 ADJUSTMENT PROCEDURES
5 - 1 PREPARATION................................................................................................................ 5 - 1
5 - 2 TRIMMER ADJUSTMENT............................................................................................... 5 - 3
5 - 3 ADJUSTMENT MODE ADJUSTMENTS ......................................................................... 5 - 5
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9 - 1 LOGIC UNIT .................................................................................................................... 9 - 1
9 - 2 RF UNIT........................................................................................................................... 9 - 3
9 - 3 AF UNIT / VCO UNIT ...................................................................................................... 9 - 5
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM