4-3
4. Troubleshooting
4-1-2. No Video (Analog PC signal)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the PC source
Check the SEMT01(MT8226)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
1
2
No
PC cable. Change a PC
cable. Change a main PCB ass’y.
No
Does the digital data appear at the
output of LVDS (RA5104~RA5109)?
Power Indicator is off.
Lamp on, no video.
No
Check a PC source and check
the connection of DSUB cable?
Check a IC5105
Change a main PCB ass’y
Yes
Does the signal appear at C3131,
C3133, C3136(R,G,B)
Please, Contact Tech support.
No
Check a LVDS cable?
Replace a lcd panel?
Yes
Yes
Input a analog PC signal and
connected cable(DPMS).
Yes
1
2
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE32A55*P
Страница 8: ...1 4 1 Precautions Memo ...
Страница 24: ...3 6 3 Disassembly and Reassemble Memo ...
Страница 28: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal ...
Страница 30: ...4 6 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data ...
Страница 32: ...4 8 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal ...
Страница 34: ...4 10 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal ...
Страница 36: ...4 12 4 Troubleshooting WAVEFORMS 2 Digital Output Data 5 Analog Signal Y C ...
Страница 38: ...4 14 4 Troubleshooting WAVEFORMS 6 The Signal are Inputed to IC2102 7 The Signal are Inputed to IC2104 ...
Страница 228: ...5 166 5 Exploded View Part List Memo ...
Страница 229: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram ...
Страница 230: ...6 2 6 Wiring Diagram ...
Страница 231: ...6 3 6 Wiring Diagram 6 2 Wiring Picture ...
Страница 234: ...6 6 6 Wiring Diagram Memo ...
Страница 235: ...7 1 7 Schematic Diagram 7 Schematic Diagram 7 1 MT8226 EMMA Block Diagram ...
Страница 237: ...7 3 7 Schematic Diagram 7 3 Schematic Diagrams 7 3 1 MAIN POWER BLOCK ...
Страница 238: ...7 4 7 Schematic Diagram 7 3 2 SOUND 7 3 3 Jack_In_Out 1 Function ...
Страница 239: ...7 5 7 Schematic Diagram 7 3 4 Jack_In_Out 2 HDMI_Switch 7 3 5 Jack_In_Out 3 Tuner ...
Страница 240: ...7 6 7 Schematic Diagram 7 3 6 Scaler 1 Flash memory Sub Micom 7 3 7 Scaler 2 Main DDR ...
Страница 241: ...7 7 7 Schematic Diagram 7 3 8 Scaler Power Service 7 3 9 FBE3 LVDS Out ...
Страница 242: ...7 8 7 Schematic Diagram 7 3 10 Emma2 DTV DDR 7 3 11 Emma2SL PCMCIA Flash memory ...