LG 32LD350 - Power Supply Connector P201 Voltage and Diode Check

Power Supply Connector P201 Voltage and Diode CheckPower Supply Connector P201 Voltage and Diode Check
P201 Connector “SMPS” to “Main” P402
Press in gently on the two tabs
to release lock
P201
Pin Label STBY Run
Diode
Check
1
(1)
PWR-ON 0V 3.28V 1.16V
2-4 24V 0V 24.19V 0.73V
Odd pins are
on the left.
(1) PWR_ON Pin 1 Turns on 12V, 24V
to the Main and 24V to the Inverter
P203 Pins 1~5
5-8 GND Gnd Gnd Gnd
9-12 3.5V 3.41V 3.41V Open
13-15 Gnd Gnd Gnd Gnd
16
n/c
n/c
n/c
Open
P203 Pins 1~5.
(2) INV_ON Pin 18 (To P203 pin 12) Turns on the Backlights.
(3) Error Pin 20 (From P203 pin 11 Silk Screened A-DIM)
Goes high when the backlights are told to come on. Goes
16
n/c
n/c
n/c
Open
17 12V 0V 11.97V Open
18
(2)
INV-ON 0V 3.32V Open
19 12V 0V 11.97V Open
gg
back low when they come on. If it goes high again on the 5th
attempt to fire the backlights, the set shuts off.
(4) A-DIM Pin 22 (To P203 pin 13 Silk Screened PWM-DIM) Is
not used.
20
(3)
ERROR 0V 0V Open
21 12V 0V 11.97V Open
22
(4)
A-DIM 0.3V 4.49V Open
23
n/c
n/c
0V
Open
Diode Mode values taken with all Connectors Removed
(5) PWM-DIM Pin 24 (To P203 pin 14 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.
23
n/c
n/c
0V
Open
24
(5)
PWM-DIM 0V 0.65V~3.25V Open
November LCD TV 32LD350
37