Panasonic service repair handbook Manuales De Servicio

trouble  shooting

        Defect phenomenon and parts

 trouble shooting

 Defect phenomenon and parts

 case ( 2 )

 

  case ( 2 )

 

Estimated defect PCB

Estimated defect PCB

SC or D PCB

DG PCB

 cause by SC PCB ( D PCB )

Small screen problem

Cause by DG PCB

TV channel program guide show

and current TV program screen 

has problem. ( ex:  PX 600 case )

Whole screen
has radiation
problem

 OSD position wrong

cause by DG  PCB

OSD indication position is wrong

 [ diagnostic point ]

 1.  Current TV program screen show on TV channel program guide,

     it is controlled by DG PCB.

[ diagnostic point ]

 2.  OSD indicate position is made by DG  PCB which is analogue data.

When voltage charge does not match on scanning electrode and writing

electrode, electric storage does not normal on inside  cell of  Panel.

and it does not radiate as normal operation.

therefore,

1. SC PCB what request order to scan electrode.

2. D PCB what control discharge.

those factor will consider cause of problem.