SONY KV-20FS12 free download

File name CTV27r1_KV-20FS12.pdf

S ® Training Manual Direct View Television BA-5 Chassis Models: KV-13FM12 KV-13FM13 KV-13FM14 KV-20FV12 KV-20FS12 KV-24FV12 KV-27FS12 KV-27FS16 KV-27FV16 KV-32FS12 KV-32FS16 KV-20FS12 Circuit Description and Troubleshooting Course: CTV-27 Sony Service Company A Division of Sony Electronics Inc ©1999 All Rights Reserved Printed in U.S.A. S is a trademark of Sony Electronics Circuit Description and Troubleshooting: Models: KV-13FM12 KV-13FM13 KV-13FM14 KV-20FV12 KV-20FS12 KV-24FV12 KV-27FS12 KV-27FS16 KV-27FV16 KV-32FS12 KV-32FS16 Prepared by: National Training Department Sony Service Company A Division of Sony Electronics Inc. Course presented by _____________________________________ Date ___________________________________________________ Student Name ___________________________________________ Table of Contents Features Audio Features Video Features Convenience Features Input/Output Feature Glossary 1 1 1 2 2 2 Inrush Current Protection Switching Power Supply Startup Regulation IC601 Internal Protection Operating the Supply without a Load Troubleshooting 13 15 15 15 17 19 21 Board Descriptions Overall Block A board MA or MB Boards CA or CB boards VA or VB Boards D Board 3 5 5 5 5 5 5 +135 OCP and H Protect Latch and Hold Down H Protect +135 Volt OCP 23 23 23 23 Deflection Block Horizontal Pincushion Vertical Dynamic Focus and Quadra-pole 25 25 25 25 25 Power Supply and Self-Diagnostics Protection Self Diagnostics 7 7 9 Power ON/Degaussing AC Input Standby Supply Power ON Degaussing Shutdown 11 11 11 11 11 11 Horizontal Deflection Troubleshooting 27 27 Vertical Deflection Troubleshooting 29 29 Video Path 24" and Under Digital Comb Filter 31 31 Y/C Processing 31 Audio with K Board Audio Iinputs and Processing Audio Amp 41 41 41 RGB Drive IK Pulses and Video Blanking Tube Bias Troubleshooting 33 33 33 35 Appendix - Excerpt from CTV-26 Standby Power Supply Converter Operation Regulation Over Current Protection (OCP) Over Voltage Protection (OVP) Secondary Output Checking Q621 i i i iii iii iii iii Video Path 27" and Above Inputs and Monitor Out Comb Filter Y/C Processing PIP 37 37 37 37 37 Audio without K Board Audio Amp Volume Control and Muting 39 39 39 1 Features Overview The following section discusses the various features for BA-5 models. These features will be separated into four categories: Audio, Video, Convenience and Input/Output. The BA-5 chassis covers the following models: The following table shows the type of surround sound and audio output power: Surround KV-13FM12 KV-20FS12 KV-20FV12 KV-24FV12 KV-27FS12 KV-27FS16 KV-27FV16 KV-32FS12 KV-32FS16 N/A N/A Matrix SRS 3D Matrix Matrix SRS 3D Matrix Matrix Power Output 3W 3W x 2 5W x 2 10W x 2 5W x 2 5W x 2 15W x 2 5W x 2 5W x 2 KV-13FM12 KV-13FM13 KV-13FM14 KV-20FS12 KV-20FV12 KV-24FV12 KV-27FS12 KV-27FS16 KV-27FV16 KV-32FS12 KV-32FS16 The 13" models are identical except they are different colors. The FM12 is gray, FM13 is white and the FM14 is