Samsung VMR-O P3.9 Product Manual page 57

B. Module Failure：
1. The single lamp has no light, and the LED itself is damaged, resulting in a dead
lamp. As shown in Picture 4:
2. A string of lamps are not lit or constantly lit: one of the 16-bit pins of the constant
current IC is damaged or in pseudo soldering. As shown in Picture 5:
3. If lamps in a unit IC control is not illuminated, the IC or the current resistance may
be damaged. As shown in Picture 6:
Picture 4
Picture 5
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