Samsung UN J5500AF Series - Page 27

SMPS : Backlight
A
B
Detail
A
To Main Board CNM803
B
Drive To Panel LEDS (CNL802)
Example of Models with Series Strings of LEDs (size related) If one LED string goes out all are out, no
backlight.
CNL802 (to BLU)
3 Sets of LED Strings in series
BL Control Voltage in
Fixed
Supply
Wired at SMPS CNL802 to determine Series or Parallel
1 NC 9 NC
2 3+ 10
1+
3 3- 11
1-
4 NC 12 NC
5 NC 13 NC
6 2+ 14 NC
7 2- 15
IF2
8 NC 16
IF1
4-6
4. Troubleshooting