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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.
Summary of Contents for UN46C9000ZF
Page 95: ...4 3 4 Troubleshooting ...
Page 103: ...4 11 4 Troubleshooting Location Main TOP BOTTOM B A E C D Detail A B C D E ...
Page 105: ...4 13 4 Troubleshooting Location Main TOP BOTTOM B A Detail A B ...
Page 106: ...4 14 4 Troubleshooting WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Page 108: ...4 16 4 Troubleshooting Location Main TOP BOTTOM C B A Detail A B C ...
Page 111: ...4 19 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 112: ...4 20 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 6 Eagle Out Clk H Sync ...
Page 114: ...4 22 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 115: ...4 23 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Page 117: ...4 25 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 118: ...4 26 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar ...
Page 120: ...4 28 4 Troubleshooting Location Main TOP BOTTOM B A C Detail A B C ...
Page 121: ...4 29 4 Troubleshooting WAVEFORMS 5 Tuner CVBS Out Pattern Grey Bar 9 Component Input Y Pb ...
Page 123: ...4 31 4 Troubleshooting Location Main TOP BOTTOM B D A C Detail A B C D ...