LG 32LG40 Training Manual page 33

Main PWB (Front Side) Regulator Checks 2 of 2
Main PWB (Front Side) Regulator Checks 2 of 2
IC806 D3.3V/A3.3V_BCM Regulator turns on LD800
PIN FUNCTION
1 On/Off Control
2 IN
3 Gnd
4 OUT
IC807
PIN FUNCTION
1 IN
2 On/Off Control
3 OUT
4 n/c
5 Gnd
IC809
PIN FUNCTION
6,7,8,10 IN
17 On/Off Control
1,2,3,4,5 OUT
14,15 n/c
11,18,19,20 Gnd
NAME STBY
Power_CTL_3.3V
+5V_SUB 0.36V
Gnd Gnd
D3.3V_BCM 0.1V
D3.3V/A3.3V_BCM Regulator
NAME STBY
+9V
Power_CTL_3.3V
+5V
n/c
Gnd Gnd
D2.6V/A2.6V_BCM Regulator
NAME STBY
+5V_SUB 0.36V
Power_CTL_2.6V
D2.6V_BCM
n/c
Gnd Gnd
Q801
RUN PIN
0V 3.4V 1,3
5V 2,4 On/Off Control
Gnd 5,6,7,8
3.4V Q802
PIN
RUN B On/Off Control
0V 8.9V C
0V 3.4V E
0V 5V Q400
n/c n/c PIN
Gnd B
C
RUN E
4.98V
0V 3.41V
0V 2.66V
n/c n/c
Gnd
33
5V SUB SWITCH
FUNCTION NAME
IN ST_5V
Q802
OUT +5V_SUB
CONTROLLER for 5V SUB SWITCH Q801
FUNCTION NAME
RL_ON
Pull Down ST_5V
Gnd Gnd
RESET GENERATOR FOR MICRO IC407
FUNCTION NAME
Reset Reset
Vcc 3.3VVST_MICON
Gnd Gnd
LCD DV
STBY RUN
0V 5V
0V 0.28V
0V 5V
STBY RUN
0V 3.29V
0V 5V
Gnd Gnd
STBY RUN
0.6V 0.6V
0V 0V
Gnd Gnd
32LG40