Samsung UE32K5500AW Service Manual page 72

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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

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