Panasonic TH50PHD5, GPH5D, TH50PHW5 manual Dark picture Flowchart

Page 44

Dark picture Flowchart

Are the video signals

correct at the D1

board input?

YES

Are the SS

board LEDs lit?

NO

Reference the HY/HZ and HX board troubleshooting charts

NO

YES

Is the TPSS1

Waveform incorrect?

YES

Are the voltages at connectors

SS11 and SS12 of the SS

board correct?

YES

Are the trigger signals at connector SS33 of the SS board correct?

YES

The SS Board is suspected

to be defective.

The SS board is suspected

to be defective.

NO

The D2 Board is suspected to

be defective.

NO

The Power Supply is suspected

to be defective.

NO

The D2 Board is suspected to

be defective.

45

Image 44

Contents Panasonic Services Company National Training Troubleshooting GuidePage Page Objective Model Line Up HD Plasma Display HD Panel Digital Cinema RealitySpecifications Panasonic Company PI Company F/HScanning Method InterlaceFeatures HD High-Definition panelModel Differences New frontProtection Single Scan SD Disassembly Rear Cover RemovalPage HD PCB Board Layout Diagram Printed Circuit Board Information TablePCB Board Layout Diagram TXNP110MHSSD PCB Layout Diagram Video Signal Path Explanation HY/HZ BoardHX Board D1 Board DVI Interface Page Sync Process RGB/PC Input Mode SyncComposite/ Component Video Input mode Sync IC3001 Video Switch D1 BoardD1 Main ICs Operation IC9007 A/D ConverterD2 Board D2 Board details SC Board Explanation Page Page SS Board Explanation Page Page Power Supplies Standby Power SupplyMain Power Supply Power Factor ControlLow Voltage Power supply Voltage RegulationHigh Voltage Power Supply Page Protection Circuits Page Diagnostic Procedures Self Check Display IndicationPower LED Flashing timing chart Diagnostic Flow Charts No PowerPower LED is red and blinking on/off Power LED blinks twice No Picture Flowchart Are the video signals Dark picture Flowchart Service Hints Local screen failurePage Page Page Page Page Panasonic Screen Saver Feature After Image PreventionSide Bar Brightness adjustment Option Setting Accessing the Option MenuOption menus Default setting Contents Hidden Option Menu for GPH5D seriesPage 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 PDP Defect Pixel Specification Check ZoneConnector Tables Board ConnectorsBoard Connectors OUT Board Connectors HX- Board Connectors HY / HZ- Board Connectors Adjustment Procedures Panel label Information+B Set-up Adjustment table∙ Adjustments Item / Preparation AdjustmentsDriver Set-up Initialization Pulse Adjust Quick adjustment after P.C.B. exchange B. Printed Circuit Board exchange procedureAdjustment Volume Locations Test Point locations Serviceman mode CAT computer aided test ModeHow to access the CAT mode I2C ModeCD mode Memory data changeSD Mode OSDI2C Menu Structure Alignment Procedures Ntsc Panel White BalancePedestal Setting PC/RGB Panel White Balance Page HD /525i /525P Panel White Balance Page 625i Panel White Balance Sub Brightness Setting

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