LG 32LD350 - Power Supply Connector P203 Voltage and Diode Check

Power Supply Connector P203 Voltage and Diode CheckPower Supply Connector P203 Voltage and Diode Check
P203 "SMPS" to CN1 “Ballast"
P203
Pin Label STBY Run Diode Check
1-5 24V 0V 24.19V 0.73V
6
-
10
GND
Gnd
Gnd
Gnd
6
10
GND
Gnd
Gnd
Gnd
11
(1)
ERROR 0V 0.59V Open
12
(2)
INV_ON 0V 3.31V Open
13
(3)
A-DIM n/c 4.5V Open
14
(4)
P-DIM 0V 0.65V~3.25V Open
1
(1) Error Pin 11 (To P201 pin 20 Silk Screened A-DIM) Goes high when the backlights are told to come on. Goes
back low when they come on. If it goes high again on the 5th attempt to fire the backlights, the set shuts off.
(2) INV_ON Pin 12 (From P201 pin 18) Turns on the Backlights.
(3) A-DIM Pin 13 (From P201 pin 22 Silk Screened PWM-DIM) Is not used.
(4) PWM-DIM Pin 14 (From P201 pin 24 Silk Screened Error_Out) can vary according to incoming video IRE level
and OSD Backlight setting Output from the Video Processor IC100. Range 0.65V to 3.25V.
November LCD TV 32LD350
38
Diode Mode values taken with all Connectors Removed