Sony LA-2 VPL-HS20 training free download

File name SONY_LA-2_VPL-HS20_training.pdf

Training Manual KP-60WE610 LA-2 Chassis Models: KP-42WE610 KP-50WE610 VPL-HS20 KP-60WE610 KFD-60XBR950 KFD-70XBR950 VPL-HS20 Diagnostics and Troubleshooting Course: TVP-17 Table of Contents Introduction ...1 6. The VPL-HS20 ...32 1. The LA-2 Chassis ...2 Overview ... 32 Overview ... 2 Overall Block diagram ... 32 Circuit Layout ... 3 7. Power Supply ...35 Circuit Board Locations ... 6 Overview ... 35 2. LA-2 Power Supplies ...7 Theory of Operation ... 35 Overview ... 7 Power Supply Troubleshooting ... 39 Troubleshooting ... 10 8. Protect Circuits ...41 3. LA-2 Protect & Self-Diagnostics ..12 Overview ... 41 Overview ... 12 9. Video Circuits ...45 Direct Relay Deactivation Protection ... 12 Video Input Selection ... 45 Protection and Self-Diagnostics ... 14 B Board Video Processing ... 47 Entering Diagnostics Mode ... 16 C Board Video Processing ... 48 4. LA-2 Video Processing ...17 Troubleshooting ... 49 Overview ... 17 10. Servicing the VPL-HS20 ...53 Video Input & Switching ... 17 Overview ... 53 Video Processing ... 19 Disassembly ... 54 Troubleshooting ... 22 Servicing the Prism Block ... 56 Internal Pattern Generator ... 27