Samsung UN J5500AF Series Service Manual page 27

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