Smps Power - Samsung UE32K5502AK Service Manual

4. Troubleshooting

SMPS POWER

„
SMPS_Front
Detail
1
Testing
1. A13V Standby to Main Board : Approx 9Vdc.
2. Power_On/Off
: 3.3Vdc Power ON/OFF.
3. A13V
: to steady 12.7 Vdc.
4. OD/UD : 3.3Vdc Over & Under Drive.
5. BLU_PWM : .9V~3.3Vdc
4-4
To Main Board
also labeled "BLU On/Off" Backlight On/Off & Backlight (PWM signal) Level Control.
CNM803
1
CNL802
2
2
To Panel LEDS CNL802