Lamp BNX Series User Manual page 60

Maintenance
C: Check if there is a short circuit between the signals of A, B, C, and D or a short circuit between a signal and
ground.
Note: The ABCD line signal is mainly detected.
12. Display lack of color
A: Check if the data terminal of the color of 245 has an input and output.
B: Check if the data signal of this color is short-circuited to other circuits.
C: Check if the cascade data port between the driver ICs of this color has an open circuit or short circuit or a
virtual solder.
Note: It is easier to find the problem by means of voltage detection. Check whether the voltage of the data port
is different from the normal voltage and thus determine the fault area.
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