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LC-22LE240
Check supply voltages of VDD_AUDIO, 5V_VCC and 3V3_VCC with a voltage-meter.
There may be a problem in headphone connector or headphone detect circuit (when
headphone is connected, speakers are automatically muted). Measure voltage at
HP_DETECT pin, it should be 3.3v.
2
1
.8. No Sound Problem at Headphone
Problem: No audio at headphone output.
Check HP detect pin, when headphone is. Check 5V_VCC and 3V3_VCC with a voltage-
meter.
2
1
.9. Standby On/Off Problem
Problem:
Device cannot boot, TV hangs in standby mode.
There may be a problem about power supply. Check 12V_VCC, 5V_VCC and 3V3_VCC
with a voltage-meter. Also there may be a problem about SW. Try to update TV with latest
SW. Additionally it is goood to check SW printouts via hyper-terminal (or Teraterm).
These printouts may give a clue about the problem.
DVD Problems
Problem: DVD is not working.
Check that DVD source is selected in Service menu. Check supply voltage of DVD
namely 12V_VCC.
21.10. No Signal Problem
Problem: No signal in TV mode.
Check tuner supply voltage; 3V3_TUN. Check tuner options are correctly set in Service
menu. Check AGC voltage at IF_AGC pin of tuner.
There may be a problem about power supply. Check 12V_VCC, 5V_VCC and 3V3_VCC
with a voltage-meter. Also there may be a problem about SW. Try to update TV with latest SW.
Additionally it is good to check SW printouts via hyper-terminal (or Teraterm).
These printouts may give a clue about the problem.
Summary of Contents for LC-22LE240E
Page 17: ...17 LC 22LE240 0 1 General Block Diagram 1 General Block Diagram ...
Page 22: ...22 LC 22LE240 2 3 Absolute Ratings 2 3 1 Electrical Characteristics ...
Page 25: ...25 LC 22LE240 3 3 2 Operating Specifications 3 4 Pinning ...
Page 38: ...38 LC 22LE240 Pinning 8 3 Pinning ...
Page 50: ...50 LC 22LE240 18 2 HDMI CN707 CN708 18 3 VGA CN711 ...
Page 52: ...52 LC 22LE240 19 1 Video Settings 19 1 Video Setting 19 2 Audio Settings 19 2 Audio Settings ...
Page 53: ...53 LC 22LE240 19 3 Options 19 3 Options Options 1 Options 1 Options 2 Options 2 ...
Page 74: ...74 LC 22LE240 POWER SUPPLY Diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I H G F E D C B A ...
Page 75: ...75 LC 22LE240 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I H G F E D C B A Led Converter Diagram ...