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4. Troubleshooting
UC9000 PD BOARD DIAGNOSIS
General PD board Diagnosis
1.
Disconnect the wire between PD board and Main board.
Short Circuit 22Pin and 24pin of CNM801
▶
If the BLU on , we can consider PD board is acting correctly.
LED Driver output diagnosis
2.
Measure voltage at CD477 or CD437 which are criteria for judgement
Measure voltage at CD403 or CD418 which are criteria for judgement
46" LED Driver output criteria for judgemen
Voltage at the CD477 or CD437
110~130V
148~215V
330~370V
Judgement
PD board is in out of order or bottom
LED bars of the panel are short circuit.
PD board is acting
normally.
Bottom LED bar wire is
down.
Voltage at the CD403 or CD418
110~130V
148~215V
330~370V
Judgement
PD board is in out of order or top LED
bars of the panel are short circuit.
PD board is acting
normally.
Top LED bar wire is
down.
55" LED Driver output criteria for judgement
Voltage at the CD477 or CD437
110~130V
148~215V
330~370V
Judgement
PD board is in out of order or bottom
LED bars of the panel are short circuit.
PD board is acting
normally.
Bottom LED bar wire is
down.
Voltage at the CD403 or CD418
110~130V
148~215V
330~370V
Judgement
PD board is in out of order or top LED
bars of the panel are short circuit.
PD board is acting
normally.
Top LED bar wire is
down.
Содержание UN46C9000ZF
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Страница 103: ...4 11 4 Troubleshooting Location Main TOP BOTTOM B A E C D Detail A B C D E ...
Страница 105: ...4 13 4 Troubleshooting Location Main TOP BOTTOM B A Detail A B ...
Страница 106: ...4 14 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Страница 108: ...4 16 4 Troubleshooting Location Main TOP BOTTOM C B A Detail A B C ...
Страница 109: ...4 17 4 Troubleshooting WAVEFORMS 4 5 HDMI Input CLK 6 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Страница 111: ...4 19 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 112: ...4 20 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 6 Eagle Out Clk H Sync ...
Страница 114: ...4 22 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 115: ...4 23 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Страница 117: ...4 25 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 118: ...4 26 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar ...
Страница 120: ...4 28 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Страница 121: ...4 29 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 9 Component Input Y Pb ...
Страница 123: ...4 31 4 Troubleshooting Location Main TOP BOTTOM B D A C Detail A B C D ...
Страница 124: ...4 32 4 Troubleshooting WAVEFORMS 0 Audio Input Sign Wave I2S Input Clk Data Audio Amp Out Sign Wave ...