Mitsubishi Electronics WS-65513, WS-48613, WS-48513 Vertical Deflection, Horizontal Deflection

Page 59

Vertical Deflection

Figure 6-4shows the Vertical Deflection circuitry. The Vertical Deflection Generator in the VCJ out- puts push-pull type of vertical deflection drive sig- nal. +VDR at pin 53 and –VDR atz pin 52. Both signals are applied to the Vertical Output IC, IC4B01. The amplified output from IC4B01 is directed to the vertical coils in the Deflection Yokes.

D4B01 and C4B04 make up the pump-up circuitry.

Feedback from the Deflection Yokes ground return at pin 4 of DY, to pin 1 of IC4B01, provide linearity and S correction.

Horizontal Deflection

Figure 6-4illustrates the Horizontal Deflection Drive and Output circuitry. Horizontal drive signal from the VCJ is amplified by Horizontal Drive circuitry including transistors Q2V40, Q5A40, Q5A33, Q5A39 and Q5A32.

The output from Q5A32 is directed to Q5A31, the Horizontal Output transistor. The output from Q5A31 takes three paths:

1)To the horizontal windings in the Deflection Yokes

2)Through C5A34 and Q5A37 to the HV Drive circuitry.

3)Through T5A31, providing the source for the CRT filament supply.

6-5

Image 59
Contents V23 Page 2003 Page Power Supply Table of Contents Introduction ... New TechnologiesDisassembly and Service Alignment ProceduresConvergence Circuitry Troubleshooting TipsVideo/Color Circuitry Sync, Deflection and High VoltageIntroduction FeaturesFeatures NetCommand Icons NetCommandButton Function Format Memory Card ReaderCompatibility PerfectColorDigital Visual Interface DVI MonitorLinkAcronyms Transition Minimized Differential Signaling TmdsDisplay Data Channel DDC Single-Link TmdsHot Plug Detect HPD High-bandwidth Digital Content Protection HdcpDVI Input Block Diagram MonitorLink DVI ConnectorV23 Chassis DVI Input Block Diagram Service Menu Access Codes Lightbox Chapter Disassembly and ServiceMain Chassis Removal DM ReplacementMain Chassis Removal PCB Locations PCB & Major Component Locations Convergence IC ReplacementV23+++ Composite Cabinet Back V23+++ Cabinet Front DisassemblyOption Menu Initial Setup Chapter Alignment ProceduresInitial Setup Main Menu Default Settings Activating the Circuit Adjustment Mode Circuit Adjustment ModeSaving Adjustment Data Selection of adjustment Functions Adjustment ItemsTerminating the Circuit Adjustment Mode NEW FEATURE… Service Mode ResetConvergence Mode Functions Convergence Adjustment ModeActivating the HD mode when no HD signal is available Alignment Data Storage Locations Fine Convergence ModeLow Energy Standby Regulator Chapter Power SupplyLow Energy Mode Low Energy Mode ActivationRegulation User Setup MenuLow Energy Power Distribution Start-up Standard Standby SupplyStandard Standby Supplies Time Shift Recording Power SuppliesStandby Power Distribution Time Shift Supply Power Distribution Switched Supplies Regulator Flashes-Stops-Flashes-Stops-etc TroubleshootingPower Distributions If the LED does not flash Page Basic µPC Requirements Chapter Control CircuitryReset Circuitry Input Command Circuitry Page AC-OFF Input Serial Data LinesΜPC Parallel Inputs RAY Protect Short DetectBWC Band Width Control Parallel OutputsFlash Circuit Chapter Video/Color Circuitry PCB-TERMINAL Video Path PCB-SIGNAL Video Path CRT Drive & Protect Circuitry Digital Signal Path Monitor Out Circuit Chapter Sync, Deflection & High Voltage VGA Sync Signal PathPage Page Horizontal Deflection Vertical DeflectionHorizontal Deflection DC Supply Circuitry Deflection Loss Detection HV & HV Regulation Ray Protect Page Chapter Convergence Circuitry Convergence Circuitry Overall Block DiagramConvergence Waveform Generator & D/A Converter Waveform Generator & D/A ConverterLow Pass Filter and Summing Amplifiers LPF & Summing AmpsConvergence Output Circuitry Convergence Output CircuitryDTV DVI VGA Chapter Sound CircuitryOverall Sound Circuitry Block Diagram Digital Audio Output Overall Sound Signal PathPage Reading the Error Codes Chapter Troubleshooting TipsUsing The Front Panel LED CRT Phosphor Protection NetCommandTM Control ProblemsDM Module Check