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4. Troubleshooting
UC8000 PD BOARD DIAGNOSIS
General PD board Diagnosis
1.
Disconnect the wire between PD board and Main board.
Short Circuit 16pin and 18pin of CNM801
▶
If the BLU on , we can consider PD board is acting correctly.
LED Driver output diagnosis
2.
Measure voltage at CD9113, CD9213, CD9313, CD9413 which are criteria for judgement.
46" LED Driver output criteria for judgemen
Voltage at CD9113
17~19V
22~33V
39~41V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Voltage at CD9213
17~19V
22~33V
39~41V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Voltage at CD9313
17~19V
22~33V
39~41V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Voltage at CD9413
17~19V
22~33V
39~41V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
55" LED Driver output criteria for judgement
Voltage at CD9113
23~25V
27~36V
49~51V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Voltage at CD9213
23~25V
27~36V
49~51V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Voltage at CD9313
23~25V
27~36V
49~51V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Voltage at CD9413
23~25V
27~36V
49~51V
Judgement
PD board is out of order.
(Bottom right LED driver is out of order) PD board is acting normally. Bottom LED bar wire is down.
Summary of Contents for UN40C8000XM
Page 10: ...4 3 4 Troubleshooting ...
Page 16: ...4 9 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 18: ...4 11 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 19: ...4 12 4 Troubleshooting WAVEFORMS 1 PC Input V Sync H Sync 2 LVDS Out CLK ...
Page 21: ...4 14 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 22: ...4 15 4 Troubleshooting WAVEFORMS 3 4 HDMI Input CLK 5 TS DATA Out Clk Data 0 ...
Page 24: ...4 17 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 25: ...4 18 4 Troubleshooting WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar 7 Eagle Out Clk H Sync ...
Page 27: ...4 20 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 28: ...4 21 4 Troubleshooting WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar 7 Eagle Out Clk H Sync ...
Page 30: ...4 23 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 31: ...4 24 4 Troubleshooting WAVEFORMS 7 Eagle Out Clk H Sync 9 Component Input Y Pb ...
Page 33: ...4 26 4 Troubleshooting Location Main TOP Location Main BOTTOM ...