Mitsubishi Electronics WS-48613, WS-65513, WS-48513, WS-55513 manual PCB-SIGNAL Video Path

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The Sub picture signals from IC2B00 are directed to IC2G00, the Sub Decoder. Switch circuitry in IC2G00 selects Sub picture signals from IC2B00 or the AV- SW(2), IC2K00.

As in previous chassis, the main and sub selected YPbPr signal are direct to the PCB-SIGNAL.

PCB-SIGNAL Video Path

Figure 5-2shows the PCB-SIGNALVideo Signal Path. Sub picture signals from PCB-TERMINAL are routed directly to the Sub YPbPr inputs of PCB-DOUBLER.

The main picture signals from PCB-TERMINAL are routed to COMP SW-3, IC2H01. IC2H01 selects the main signal from the PCB-TERMINAL main outputs,

or the MLINK signal from the MLINK Decoder, or the RGB signal from the DM Module. The output of IC2H01 is applied to the Main Picture inputs to the Doubler circuit.

Note that the OSD RGB signals from the DM Module are also directed the VCJ, IC2V01.

On-Screen Display (OSD) signals are generated in the DM Module, and when the signal source is not the DM, OSD is inserted in the main picture in the VCJ. If the source is from the DM, the DTV Tuner or 1394 inputs, OSD insertion occurs in the DM module.

The diagram also shows that Convergence OSD sig- nals are applied to the VCJ and inserted in the VCJ.

5-3

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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 DisassemblyChapter Alignment Procedures Initial SetupOption Menu Initial 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 Adjustment Mode Activating the HD mode when no HD signal is availableConvergence Mode Functions 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 SupplyTime Shift Recording Power Supplies Standby Power DistributionStandard Standby Supplies Time Shift Supply Power Distribution Switched Supplies Regulator Troubleshooting Power DistributionsFlashes-Stops-Flashes-Stops-etc If the LED does not flash Page Basic µPC Requirements Chapter Control CircuitryReset Circuitry Input Command Circuitry Page Serial Data Lines ΜPC Parallel InputsAC-OFF Input RAY Protect Short Detect BWC 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 Chapter Troubleshooting Tips Using The Front Panel LEDReading the Error Codes NetCommandTM Control Problems DM Module CheckCRT Phosphor Protection