Manuale Di ServizioSommarioObjective1Specifications (Models Comparison)2Safety Precautions3TH-42PD50U Board Description and Part Numbers4TH-42PX500U Board Description and Part Numbers5TH-50PX500 Board Description and Part Numbers6Power Supply Outline for 42”and 50” Models7Standby Circuit8Power On Operation12Power Supply Connections15P Board15PA Board16PB Board17TH-42PX500U Block Diagram18TH-42PX50U Block Diagram21TH-42PD50U Block Diagram23Video Input Selection Block Diagram25Audio Input Selection Block Diagram26ATSC, SD and PC Card Input Signal Flow27DG Board Block Diagram28Signal Process Circuit30Main Picture Signal Flow30Sub Picture Signal Flow30RGB Processor31D Board Block Diagram32C1 Board Block Diagram33SC Board Explanation34SC board Waveform35SU And SD Board Shift Registers35SS Board Explanation37SS Board Schematic38SS Board Waveform38TH-42/50PX500U40Power LED Flashing timing chart40SOS Detection Circuits41SOS Detect (D Board)41SOS Detect (DG Board)41SOS Detect (D and PA Board)42PA Board SOS Detection Circuits43Over-Voltage Detection of Main Voltage (10 Blinks)43Short Circuit Detection of Main Voltage (10 Blinks)44Short Circuit Detection of Sub-voltage (10 Blinks)45Other SOS Detection Circuits46SOS Detect (P, SC, and SS Board)46P Board SOS Detection47Voltage Distribution of the PA board and SOS Detection48Z Board (Sound) SOS Detection50TH-42/50PX500U Self-check Function (Reset)51Diagnostic Procedures51How to access the Self-check Screen (Reset)51How to exit the Self-check Screen51Screen Display51TH-42PD50U53Power LED Flashing timing chart53TH-42/50PD50U Self-check Function54Diagnostic Procedures54How to access the Self-check Screen (Reset)54How to exit the Self-check Screen54Screen Display54Serviceman Mode56How to enter the Serviceman Mode56Adjustment method56Cancellation56Contents of adjustment mode56Internal Pattern Generator57Cable Diagnostic Screen57Adjustments58Driver Set-up58Initialization Pulse Adjustment59Drive Waveform59P.C.B. (Printed Circuit Board) exchange procedure60Adjustment Volume Locations61Test Point Locations62Troubleshooting63No Picture or Partial Picture63Scan and Sustain Drive Waveform66Scan and Sustain Drive Check points66Vertical line problems71Picture ok, Sound NG72No picture, no sound73No picture, sound ok74How to determine whether the D board or SC board is defective?75Additional Troubleshooting Hints76SC20 or D20 Connector77How to determine whether the D board or SS board is defective?78Defective Board79Glossary and Acronyms80Dimensioni: 2,56 MBPagine: 85Language: EnglishApri il manuale