4-2-3. SMPS
SMPS Power On Sequence
A
B
Detail
A
To Main Board CNM803
B
To Panel LEDS CNL802
NOTE
A13V for Standby & Operation (no longer A5V & no “B” voltages)
Testing
1 A13V Standby to Main Board: varying from 7.5~12.7 Vdc
2 PS_ON : 3.3Vdc Power ON/OF
3
A13V : to steady 12.7 Vdc
4
UD ( Under Drive) : 3.3Vdc also labeled “OD/UD”
5 BLU_PWM: .9V~3.3Vdc also labeled “BLU On/Off” Backlight On/Off & Backlight (PWM signal) Level Control.
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