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File name TVP08r1_Projection TV.pdf

S ® Training Manual Projection Television Circuit Description and Troubleshooting Course: TVP-08R1 Circuit Description and Troubleshooting: Prepared by: National Training Department Sony Service Company A Division of Sony Electronics Inc. Course presented by______________________________________ Date___________________________________________________ Student Name ___________________________________________ Sony Service Company A Division of Sony Electronics Inc ©1998 All Rights Reserved Printed in U.S.A. Sony and Trinitron are registered trademarks of Sony. S SEL Service Company A Division of Sony Electronics Inc. 1 Sony Drive Park Ridge, New Jersey 07656 TVP080299 Printed in U.S.A. Table of Contents Features Overview Picture Audio 1 1 1 1 DC Protect AC Protect 13 13 Soft Start Overview Soft Start - Power ON 15 15 15 Self-Diagnostics Board Descriptions Power Supply Block AC Input Power ON Converter Regulation Protection 3 5 7 7 7 7 7 7 Converter Overview Operation 17 17 17 T6002 Secondary (Audio B+) Overview Operation 19 19 19 T6001 Secondary-1 Overview +/- 15 Volts + 11 Volts +/- 22 Volts Distribution 21 21 21 21 21 21 AC Input and Switching B+ Overview AC Input B+ Rectifier 9 9 9 9 Standby Power Supply Overview Standby Switching supply 11 11 11 T6001 Secondary-2 +7 Volts +135 Volts -135 Volts +33 Volts 23 23 23 23 23 Vcc Switch (Power On) Overview Power ON 13 13 13 Distribution 23 M (Main) Bus P (Auto Registration) Bus MID Bus 37 37 37 Regulation Overview Operation 25 25 25 Video Path Block Inputs Main Video Sub-Video IC511 Video Processor 39 39 39 39 39 DC Protection Overview Shut Down +135 Volt Over Voltage +135 Volt Over Current Protection +19, +22, +7 Volt LVP 27 27 27 27 27 27 Input Switching Overview Inputs Outputs 41 41 41 41 PS Troubleshooting Overview Troubleshooting 29 29 29 Main Y and C Buffers Overview Y Buffer Sync Separator C Buffer 43 43 43 43 43 Protection Block Overview Diagnostic Indication Circuit Description 31 31 31 33 Reset Overview Initial Reset Power ON Reset 35 35 35 35 3D Comb Filter Overview What is a 3D Comb Filter? Circuit Description 45 45 45 45 System Block Diagram Overview B (Standby) Bus 37 37 37 Main Chroma Decoder Overview C Processing 49 49 49 Y Processing H and V Sync 3.58 MHz 49 49 49 Sync Processing 65 IK/AKB Overview Video Drive IK Troubleshooting 69 69 69 69 69 Main YUV Switch Overview Inputs Output Selection 51 51 51 51 Sync Paths Overview Sync Paths 71 71 71 DRC - Digital Reality Creation DRC Block Overview Inputs DRC Processing Outputs Troubleshooting 53 57 57 57 57 57 57 Deflection Block Overview Vertical Horizontal High Voltage Convergence 73 73 73 73 73 73 MID - Multi Image Driver MID Block Overview MID Inputs MID Processing MID Outputs MID Troubleshooting 59 63 63 63 63 63 63 Horizontal Deflection Block Horizontal Jungle Overview H Drive 75 77 77 77 H Out Overview H Drive H Out Horizontal Centering 79 79 79 79 79 Video