64
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.
Содержание LC-22LE240E
Страница 17: ...17 LC 22LE240 0 1 General Block Diagram 1 General Block Diagram ...
Страница 22: ...22 LC 22LE240 2 3 Absolute Ratings 2 3 1 Electrical Characteristics ...
Страница 23: ...23 LC 22LE240 2 3 2 Operating Specifications 2 4 Pinning 3 AUDIO AMPLIFIER STAGE WITH TPA3113 U168 ...
Страница 25: ...25 LC 22LE240 3 3 2 Operating Specifications 3 4 Pinning ...
Страница 29: ...29 LC 22LE240 4 1 Power Management MB62 Power Management with Adaptor MB62 Power Management with PW25 PW26 ...
Страница 30: ...30 LC 22LE240 MB62 Power Management with IPS16 IPS17 IPS60 PW05 MB62 Power Management with PW03 PW04 PW07 ...
Страница 38: ...38 LC 22LE240 Pinning 8 3 Pinning ...
Страница 50: ...50 LC 22LE240 18 2 HDMI CN707 CN708 18 3 VGA CN711 ...
Страница 52: ...52 LC 22LE240 19 1 Video Settings 19 1 Video Setting 19 2 Audio Settings 19 2 Audio Settings ...
Страница 53: ...53 LC 22LE240 19 3 Options 19 3 Options Options 1 Options 1 Options 2 Options 2 ...
Страница 54: ...54 LC 22LE240 19 4 Tuning Settings 19 5 Source Settings 19 4 Tuning Settings 19 5 Source Settings ...
Страница 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 ...
Страница 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 ...
Страница 76: ...76 LC 22LE240 24 PRINTED WIRING BOARD 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 ...