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PART 2 SCHEMATIC DIAGRAMS CONTENTS Page Overall PCB Block Diagram ... 1 PCB-MAIN ... 2 PCB-POWER ... 3 PCB-TERMINAL-1 ... 4 PCB-TERMINAL-2 ... 6 PCBs-M-LINK / E2P / DOUBLER-3 ... 7 PCB-SIGNAL-1 (TUNER / AUDIO) ... 8 PCB-SIGNAL-2 (MICRO) ... 9 PCB-SIGNAL-3 (VIDEO/CHROMA) ... 10 PCB-SIGNAL-4 (CONVERGENCE-GEN) ... 11 PCB-DTV-TUNER ... 12 PCB-DEMOD ... 13 PCB-DOUBLER-1 ... 14 PCB-DOUBLER-2 ... 15 Refer to PART 1 for: • Specifications • Safety Precautions • Disassembly • CRT Replacement • Electrical Adjustments • Parts List • Block Diagrams

This service manual provides service instructions for the V23, V23+ v23++ and V23+++ PTV chassis types. The specific models for each chassis type are listed below. Service personnel should read this manual thoroughly before servicing these chassis. V23 Chassis V23+ Chassis V23++ Chassis V23+++ Chassis WS-48513 WS-48613 WS-65713 WS-55813 WS-55513 WS-55613 WS-73713 WS-65813 WS-65513 WS-65613 WS-73513 This service manual includes: 1. Assembly and disassembly instructions for the front and rear cabinet Components. 2. Servicing of the Lenticular Screen and Fresnel Lens. 3. Servicing printed circuit boards (PCBs). 4. CRT replacement procedure. 5. Electrical adjustments. 6. Chip parts replacement procedures. 7. Circuit path diagrams. The parts list section of this service manual includes: 1. Cabinet and screen parts. 2. Electrical parts. Schematic and block diagrams of the above listed models are included in this service manual for better under- standing of the circuitry. PCB drawings are also included for easy location of parts and test points.

HIGH SPEED TROUBLESHOOTING CONTENTS INTRODUCTION ... 2 SAFETY PRECAUTIONS ... 3 V22/V24 - PWB FUNCTIONS AND LOCATIONS ... 4 V23 - PWB FUNCTIONS AND LOCATIONS ... 5 PWB PART NUMBERS ... 6 TROUBLESHOOTING CHARTS V22/V24 & V23 Audio ... 7 V22/V24 Video/Color ... 8 V23 Video/Color ... 9 V22/V24 & V23 Power ... 10 V22/V24 & V23 Convergence ... 12