Training Manual
Page 8
...those circuits under test. Use your senses the first check should always be the DC Supply Voltages to the Customer. 8 July 2010 50PJ350 Plasma Frequency of power supplies will sometimes leak dielectric material and give some clues. • Localize After carefully checking the symptom and ...symptom carefully and determine what circuits could be an indication of an imminent failure. • Correct The final step is to correct the problem. Always confirm the supplies are missing check the resistance for possible short circuits. • Isolate To further isolate the failure, check ...
...those circuits under test. Use your senses the first check should always be the DC Supply Voltages to the Customer. 8 July 2010 50PJ350 Plasma Frequency of power supplies will sometimes leak dielectric material and give some clues. • Localize After carefully checking the symptom and ...symptom carefully and determine what circuits could be an indication of an imminent failure. • Correct The final step is to correct the problem. Always confirm the supplies are missing check the resistance for possible short circuits. • Isolate To further isolate the failure, check ...
Training Manual
Page 32
Power Supply The Waveform adjustment is only necessary 1) When the Y-SUS board is replaced 2) When a "Mal-Discharge" problem is encountered 3) When an abnormal picture issues is specific to the panel's needs. Adjustment Notice All adjustments (DC or Waveform) are from a specific ...panel. Customer's Menu, Select "Options", select "ISM" select "WHITE WASH". They are not the same for every panel encountered. 32 July 2010 50PJ350 Plasma It is critical that the DC Voltage adjustments be checked when; 1) SMPS, Y-SUS or Z-SUS board is replaced. 2) Panel is replaced, Check Va/...
Power Supply The Waveform adjustment is only necessary 1) When the Y-SUS board is replaced 2) When a "Mal-Discharge" problem is encountered 3) When an abnormal picture issues is specific to the panel's needs. Adjustment Notice All adjustments (DC or Waveform) are from a specific ...panel. Customer's Menu, Select "Options", select "ISM" select "WHITE WASH". They are not the same for every panel encountered. 32 July 2010 50PJ350 Plasma It is critical that the DC Voltage adjustments be checked when; 1) SMPS, Y-SUS or Z-SUS board is replaced. 2) Panel is replaced, Check Va/...
Training Manual
Page 89
... TCP 128 Lines per Buffer 256 Lines output Total There are 16 total TCPs. 4096 Vertical Electrodes 4986 (RGB) / 3 = 1365 Total Pixels (H) 89 July 2010 50PJ350 Plasma Control Board Signal (Simplified Block Diagram) The Control Board supplies Video Signals to help determine the failure depending on where the it shows on...
... TCP 128 Lines per Buffer 256 Lines output Total There are 16 total TCPs. 4096 Vertical Electrodes 4986 (RGB) / 3 = 1365 Total Pixels (H) 89 July 2010 50PJ350 Plasma Control Board Signal (Simplified Block Diagram) The Control Board supplies Video Signals to help determine the failure depending on where the it shows on...
Training Manual
Page 130
...all X Boards To Check for Y or Z-SUS. VR201 Z-SUS p/n: EBR63040301 Connect Scope between Vs and Gnd to confirm the Main is the only problem. 50VAC rms "White" 46VAC rms "Black" FS1 Diode Check Open with Board Disconnected 7 ZBIAS 1.83V Open or Connected Control Board Test 8 Slop_Ctl ... load. If Missing, the set works normally, then the SMPS is missing check FS204 on . VR401 B Set-Dn 180uSec ± 5uSec 50PJ350 (50T1 Panel) CIRCUIT INTERCONNECT DIAGRAM SMPS Stand-Alone Test - To Test the Set without Main board, leave P812 connected. Floating GND D401 SET...
...all X Boards To Check for Y or Z-SUS. VR201 Z-SUS p/n: EBR63040301 Connect Scope between Vs and Gnd to confirm the Main is the only problem. 50VAC rms "White" 46VAC rms "Black" FS1 Diode Check Open with Board Disconnected 7 ZBIAS 1.83V Open or Connected Control Board Test 8 Slop_Ctl ... load. If Missing, the set works normally, then the SMPS is missing check FS204 on . VR401 B Set-Dn 180uSec ± 5uSec 50PJ350 (50T1 Panel) CIRCUIT INTERCONNECT DIAGRAM SMPS Stand-Alone Test - To Test the Set without Main board, leave P812 connected. Floating GND D401 SET...