Panasonic TH-42PHW5, TH50PHW5, TH-50PHD5, TH-42PHD5 manual Power Supplies, Standby Power Supply

Page 31

Power Supplies

Standby Power Supply

Figure 29

The standby power supply provides the necessary DC voltage for the system control Microprocessor, Reset circuit and the EEPROM. D421 rectifies the incoming AC Voltage and applies it to the transformer T402 and the standby B+ control circuit IC400. The output pulses of IC400 are then applied to the primary side of transformer T402. Diode D439 rectifies the AC output at pin 15 of the secondary of T402 to create STB (Standby) voltage for the system control circuit. The AC output at pin 14 of the secondary of T402 is rectified by diode D440 to create the DC voltage for the power relays. Transistor Q418 creates the ground path for power relay RL401. Transistor Q417 provides the ground path for the In Rush Current relay RL400. The Opto-coupler D431 provides feedback to the STB control circuit for voltage regulation.

Image 31

Contents Troubleshooting Guide Panasonic Services Company National TrainingPage Page Error! Bookmark not defined Objective HD Plasma Display HD Panel Digital Cinema Reality Model Line UpPanasonic Company PI Company F/H SpecificationsHD High-Definition panel FeaturesProtection New frontModel Differences Single Scan SD Rear Cover Removal DisassemblySC2 SC4 Printed Circuit Board Information Table HD PCB Board Layout DiagramTXNP110MHS PCB Board Layout DiagramSD PCB Layout Diagram HY/HZ Board Video Signal Path ExplanationHX Board D1 Board DVI Interface Page Component Video Input mode Sync AV/RGB/PC Input Mode SyncSync Process IC9007 A/D Converter IC3001 Video SwitchD1 Board D1 Main ICs OperationD2 Board D2 Board details SC Board Explanation Page Page SS Board Explanation Page Page Standby Power Supply Power SuppliesPower Factor Control Main Power SupplyVoltage Regulation Low Voltage Power supplyHigh Voltage Power Supply Page Protection Circuits Page Self Check Display Indication Diagnostic ProceduresPower LED Flashing timing chart No Power Diagnostic Flow ChartsPower LED is red and blinking on/off Power LED blinks twice No Picture Flowchart Are the video signals Correct at the D1 Board input? Dark picture Flowchart Local screen failure Service HintsPage Page Page Page Page Panasonic After Image Prevention Screen Saver FeatureSide Bar Brightness adjustment Accessing the Option Menu Option SettingHidden Option Menu for GPH5D series Option menus Default setting ContentsPage Sample Waveforms CN H2, Pin A8 CN H2, Pin A19 5ms /div 1ms/ div Page HX board Page SC Board Input Signals SC Board Waveforms CLK SS-Board Input Signals SS Board Waveforms Check Zone PDP Defect Pixel SpecificationBoard Connectors Connector TablesBoard Connectors OUT Board Connectors HX- Board Connectors HY / HZ- Board Connectors Panel label Information Adjustment ProceduresAdjustments Adjustment table+B Set-up Item / Preparation Driver Set-upInitialization Pulse Adjust Adjustment Volume Locations B. Printed Circuit Board exchange procedureQuick adjustment after P.C.B. exchange Test Point locations I2C Mode Serviceman modeCAT computer aided test Mode How to access the CAT modeMemory data change CD modeOSD SD ModeI2C Menu Structure Pedestal Setting Alignment ProceduresNtsc 480i White Balance Adjustment 480p White Balance Adjustment 720p White Balance Adjustment 1080i White Balance Adjustment Sub Brightness Setting Non -authorized limited time Service Contact Information

Related manuals

Manual 40 pages 56.02 Kb

Manual 92 pages 7.89 Kb

Manual 40 pages 5.26 Kb

TH-50PHD5, TH-42PHD5, TH50PHW5, TH-42PHW5 specifications

Panasonic has long been a prominent name in the plasma television market, and models like the TH-50PHW5, TH-42PHD5, TH-50PHD5, and TH-42PHW5 embody the brand's commitment to innovative features and high-quality performance. These models showcase advanced plasma technology that was at the forefront during their release, catering to both casual viewers and home theater enthusiasts.

The TH-50PHW5 is known for its impressive 50-inch display that delivers vibrant colors and deep blacks, providing an immersive viewing experience. One of its standout features is the 1024x768 resolution which, combined with the ability to handle multiple video formats, ensures that content is displayed with clarity and precision. This model supports a wide color gamut, which results in lifelike images that enhance film and sports viewing.

The TH-42PHD5 and TH-50PHD5, both featuring a 42-inch and 50-inch screen respectively, focus on professional-grade quality with a strong emphasis on high contrast ratios. These models utilize Panasonic’s Pure Driving Technology, allowing for smooth motion handling and a reduction in motion blur. This is particularly beneficial for fast-paced content such as action films or live sports, where clarity is crucial.

One of the notable technologies across these models is the Real Black Drive System, which enhances the levels of black in images, leading to improved contrast and detail in darker scenes. This is complemented by a 16:9 aspect ratio, allowing for an expanded viewing field that suits modern widescreen formats.

The TH-42PHW5 is particularly praised for its versatility, with various input options including HDMI and component video connections, making it suitable for a range of devices from gaming consoles to Blu-ray players.

These models also boast a robust design, making them suitable for both home and commercial installations. The ability to mount them on walls or utilize them in digital signage applications demonstrates their practicality.

Overall, Panasonic’s TH-50PHW5, TH-42PHD5, TH-50PHD5, and TH-42PHW5 televisions offer a blend of advanced plasma technology, versatility, and exceptional picture quality that was ahead of their time, solidifying their place in the plasma TV legacy.