LCD TV SERVICE MANUAL - TV & Monitor Service Manual Database

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1. Power Board 1-1. The full flowchart for the voltage output Start check Does the whole screen appear? Yes Does the low pressure output appear? Yes Does the high tension output appear? Yes Does the high tension output voltage occur? Yes Manufacture’s model passage No No No TROUBLESHOOTING Is it identical to when the power is off? Yes 1. Check the Power Off status. Does the St-by 5V signal appear? No 3. Check the St-by 5V signal circuit. Does the VSC signal Vs-ON appear? No 7. Check the VSC Vs-ON signal No Yes - 14 - Is the Interface signal operating? Yes 2. Check the Interface signal status. Does the 5V <strong>Monitor</strong> signal appear? No 4. Check the 5V <strong>Monitor</strong> signal circuit. When the Y, Z B/D Module When No input connector, does Power No removing the Y B/D No Board high tension Module input connector, output voltage drop? does output voltage drop? Yes 9. Check the Power Board Output high tension circuit Yes Does the Vs, Va voltage output appear? No 8. Check the Vs, Va voltage output circuit. Yes Yes 10. Check the Z B/D Module output circuit Does the VSC signal RL-ON appear? No 5. Check the VSC RL-ON signal. Does the VSC low pressure output appear? No 6. Check the VSC low pressure output When removing the Z B/D Module input connector, does output voltage drop? Yes Yes 11. Check the Y B/D Module output circuit
2. No Power (1) Symptom 1) Does not minute discharge at module. 2) Non does not come into the front LED. (2) Procedure check No Is the power cord plugged in? Plug in the power cord. Yes Is the Line Filter and Power Board Cable connected? Yes Is the appropriate Fuse(F101) on the Power Board? Yes Is the Power Board and 13P of VSC Board Cable connected? Yes After removing the cables, connect them to the Power Board(except the SC101 connection cable), and change the AC voltage marking to manual. When ST-BY 5V does not operate, replace the Power Board. No No No - 15 - Connect the Cable. Replace the Fuse. Connect the Cable.
Page 1 and 2: LCD TV SERVICE MANUAL CHASSIS : LD7
Page 3 and 4: SAFETY PRECAUTIONS Many electrical
Page 5 and 6: IC Remove/Replacement Some chassis
Page 7 and 8: 3. Optical Feature(LCD Module-LPL)
Page 9 and 10: 1. Application Range This spec. she
Page 11 and 12: * Before AV ADC Calibration, should
Page 13: 8. Set information(Serial No & Mode
Page 17 and 18: 4. No Raster (1) Symptom 1) No OSD
Page 19 and 20: 5-2. In case there is no display on
Page 21 and 22: 6. In case of no sound (1) Symptom
Page 23 and 24: MEMO - 23 -
Page 25 and 26: P/No : EBY36717302(1/4) 2007.01.26
Page 27 and 28: P/No : EBY36717302(3/4) 2007.01.26

LCD TV SERVICE MANUAL - TV & Monitor Service Manual Database

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