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Sanyo DP50747 Service Manual

Also see for DP50747: Owner's manualOwner's manualOwner's manualService manualService manual

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Contents
  1. Table Of Contents
  2. SAFETY INSTRUCTIONS
  3. SERVICE ADJUSTMENTS
  4. ON-SCREEN SERVICE MENU
  5. POWER FAILURE CIRCUIT
  6. Mechanical Disassembly
  8. CHASSIS ELECTRICAL PARTS LIST
  9. CABINET PARTS LIST
  10. COMPONENT AND TESTPOINT LOCATIONS
  12. BLOCK DIAGRAM POWER LINES
  13. BLOCK DIAGRAM SIGNAL LINES
  14. IC BLOCK DIAGRAMS
  16. troubleshOOTING FLOW CHARTS
  18. DIGITAL
  19. CONTROL PORT FUNCTIONS
  21. SIGNAL FLOW CHARTS
  29. SCHEMATIC NOTES
  30. IC, DIODE, AND TRANSISTOR PIN LAYOUTS
  31. main unit
  32. CAPACITOR AND RESISTOR CODE CHART
  33. SCHEMATIC DIAGRAMS
Sanyo DP50747 Service Manual Manual pdf 44 page image
— 42 —TROUBLESHOOTING FLOW CHARTSNO POWERNoNoYesYesYes(or the voltage to some lines is not supplied.)After a few seconds, the set will be switched off.Check 'Power Failure' Circuit.No: All 0V(except '5V_STBY' line)Isthe voltage to all linessupplied?Isthe voltageto "5V_STBY" linesupplied?Isfuse (F601)open? Check:Varistor (VA601),Sub Power& Filter UnitCheck: aroundCPU (IC801), IC (IC802),Crystal (X801), Power UnitCheck: Power Unit(PDP Module)Diode Detected VoltageD1602/D1604 D3.3VD1651 12V_AMPD1640 A9VD1631 A5VD1621 TU33VPower Failure LineCPU (IC801) 32pinQ803-Q804
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