In Full White Pattern, The Brightness Is Getting Darker Toward The Center; A Specific Brightness Of One Color Is Not Clear - LG 42" PDP SVC Training Manual

12. In full white pattern, the brightness is getting darker toward the center.

1) It happens with Z B/D's ramp waveform
2) Check the connection between CTRL B/D and Z B/D's connection cable.
3) Replace Z B/D.
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13. A specific brightness of one color is not clear.

1) Check CTRL B/D's input signal connector.
2) Replace CTRL B/D.
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