Stop electronic waste, fix it yourself

This service manual covers ail service information related to the theoretical, physical, mechanical and electrical characteristics of the IC-475A/E/H 430MHz ALL MODE Transceiver. SECTION 1 SPECIFICATIONS ... 1 — 1—2 SECTION 2 OUTSIDE AND INSIDE VIEWS ... 2 — 1-5 2-1 OUTSIDE VIEWS ... 2—1 2-2 INSIDE VIEWS ... 2 — 4 SECTION 3 BLOCK DIAGRAMS ... 3 — 1 SECTION 4 CIRCUIT DESCRIPTION ... 4 — 1-14 4-1 Receiver CIRCUITS ... 4— 1 4-2 Transmitter CIRCUITS ... 4—3 4-3 STANDBY CONTROL CIRCUIT ... 4—6 4-4 PLL CIRCUITS ... 4—6 4 - 5 LOGIC CIRCUITS ... 4— 9 4 - 6 SWITCHING REGULATOR CIRCUIT (IC-475A/E ONLY) ... 4—14 SECTION 5 MECHANICAL PARTS AND DISASSEMBLY ... 5-1-7 5 -1 FRAME DISASSEMBLY ... 5 — 1 5 - 2 FRONT PANEL DISASSEMBLY ... 5 — 2 5-3 REAR PANEL DISASSEMBLY ... 5 — 3 5 - 4 FRONT, LOGIC AND PLL UNITS CONNECTOR ASSEMBLY ... 5 — 4 5-5 FRONT, MAIN AND RF YGR UNITS CONNECTOR ASSEMBLY ... 5 — 5 5-6 PA AND REG UNITS CONNECTOR ASSEMBLY (IC-475A/E) ... 5 — 6 5-7 PA, CTRL AND FILTER UNITS CONNECTOR ASSEMBLY (IC-475H) ... 5 — 7 SECTION 6 MAINTENANCE AND ADJUSTMENT ... 6 — 1-25 6 -1 PREPARATION BEFORE SERVICING ... 6 — 1 6-2 PLL ADJUSTMENT ... 6—2 6-3 FREQUENCY ADJUSTMENT ... 6—4 6-4 Receiver ADJUSTMENT ... 6—6 6 - 5 Transmitter ADJUSTMENT (IC-475H) ... 6 — 12 6 - 6 Transmitter ADJUSTMENT (IC-475A/E) ... 6 — 18 6-7 TONE ADJUSTMENT ... 6 — 24 SECTION 7 BOARD LAYOUTS ... 7 — 1-22 7-1 FRONT UNITS (1) ... 7— 1 7-2 FRONT UNIT (2) ... 7—2 7-3 LOGIC AND SENSOR UNITS ... 7—4 7-4 PLL AND DDS UNITS ... 7—6 7-5 MAIN UNIT ... 7—8 7-6 RF YGR UNIT (IC-475A/E) ... 7 — 10 7-7 RF YGR UNIT (IC-475H) ... 7—12 7-8 REG UNIT (IC-475A/E ONLY) ... 7 — 14 7-9 PA UNIT (IC-475A/E) ... 7 — 16 7 -10 CTRL UNIT (IC-475H ONLY) ... 7 — 18 7-11 PA UNIT (IC-475H) ... 7 — 20 7 -12 FILTER UNIT (IC-475H ONLY) ... 7 — 22 SECTION 8 VOLTAGE DIAGRAMS ... 8 — 1 ~ 7 8-1 FRONT UNIT ... 8—1 8-2 LOGIC UNIT ... 8-2 8-3 PLL UNIT ... 8 — 3 8-4 MAIN UNIT ... 8 — 4 8-5 RF YGR UNIT ... 8 — 5 8 - 6 REG AND PA UNITS (IC-475A/E ONLY) ... 8 — 6 8-7 CTRL, PA AND FILTER UNITS (IC-475H ONLY) ... 8 — 7 SECTION 9 PARTS LIST ... 9 — 1-20