Order Number PCZ1004048CEService ManualHigh Definition Plasma DisplayModel No. TH-50PF20ETH-50PF20ERGPF13D ChassisA WARNINGThis service information is designed for experienced repair technicians only and is not designed for use by the general public.It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to serviceor repair the product or products dealt with in this service information by anyone else could result in serious injury or death.IMPORTANT SAFETY NOTICEThere are special components used in this equipment which are important for safety. These parts are marked by A in the SchematicDiagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replacedwith manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission ofmanufacturer.TABLE OF CONTENTS PAGE PAGE1 Safety P recautions------------------------------------- --- 3 7.3. No Picture ------------------------------------------- --------- 191.1. General Guidelines --------------------------------------- --- 3 7.4. Local screen failure ------------------------------ --------- 201.2. Touch-Current Check ------------------------------------ --- 3 8 Service Fixture & T o o ls ------------------------------- --------- 212 W arning--------------------------------------------------------------- --- 4 8.1. SC jig-------------------------------------------------- --------- 212.1. Prevention of Electrostatic Discharge (ESD) 9 D isassem bly and A ssem bly In stru ctio n s------ --------- 22to Electrostatically Sensitive (ES) Devices ------- —4 9.1. Removal of Rear C over------------------- --------- 222.2. About lead free solder (PbF) -------------------------- --- 5 9.2. Removal of Slot B lock--------------------- --------- 223 Service N avigation------------------------------------- --- 6 9.3. Removal of DS-Board --------------------------- --------- 223.1. Service H int ------------------------------------------------- --- 6 9.4. Removal of HX-Board--------------------------- --------- 223.2. Applicable signals ---------------------------------------- --- 7 9.5. Removal of A-Board ----------------------------- --------- 234 S p e c ific a tio n s ---------------------------------------------- 9 9.6. Removal of PB-Board---------------------- --------- 235 O perating In stru ctio n s--------------------------------- --10 9.7. Removal of Fan----------------------------- --------- 236 Service M o d e ----------------------------------------------12 9.8. Removal of P-Board----------------------- --------- 246.1. CAT (Computer Aided Test) m ode-------------- --12 9.9. Removal of AC Inlet Assy---------------------- --------- 246.2. IIC mode structure (following items value is 9.10. Removal of H3-Board --------------------------- --------- 24sample data)------------------------------------------------ --16 9.11. Removal of SU-Board and SD-Board------ --------- 247 Troubleshooting G uide-------------------------------- --17 9.12. Removal of SC-Board---------------------- --------- 257.1. Self Check----------------------------------------- --17 9.13. Removal of SS-Board---------------------- --------- 257.2. No Power ---------------------------------------------------- --19 9.14. Removal of SS2-Board-------------------- --------- 26■ ®Panasonic © Panasonic Corporation 2010Unauthorized copying and distribution is a violationof law.