Read LG 50PN4503-ZA / 50PN450B-ZA (CHASSIS:PD31A) Service Manual online
+3.3V_ST
AVDD_NODIE
Input
STBY DTV Comp HDMI
Input
DTV
Comp
HDMI
Spec) 165mV↓
73.58Vrms
418mVpp
3. Power Block.
C610
0.1uF
Spec) 250mV↓
50Vrms
244mVpp
C608
10uF
L600
120 Ohm
5A
2012
IC600
5V to 3.3V
AP2121N-3.3
(0.3A)
C601
0.1uF
C600
10uF
C604
1uF
C401
0.1uF
LM1
L400
120 Ohm
2A
1608
_
5.10V
5.07V
3.29V
3.29V
p
8.3mA 1.07A 1.12A 1.14A
p
33mA
33mA
33mA
5.08V
0.1uF
16V
10V
0.1uF
16V
10V
6.3V
0.1uF
RS232C
C229
0.1uF
Spec) 165mV↓
73.58Vrms
Spec) 250mV↓
69Vrms
245mVpp
+5
C556
0.1uF
Serial Flash
16V
1005
73.58Vrms
164mVpp
3.29V
V_
ST
+1.10V_Vddc
16V
1005
C547
0.1uF
16V
SUB Ass’y
Spec) 65mV↓
17Vrms
60mVpp
Spec) 250mV↓
Spec) 250mV↓
68Vrms
248mVpp
Spec) 250mV↓
Input
DTV
Comp
HDMI
230mA 220mA 220mA
3.29V
Input
STBY
0 2mA
IC603
5V to 1.23V
TPS54231D
(2A)
C621
0.1uF
C620
10uF
_
1005
X3
10uF
LM1
x7
0.1uF
X2
1uF
C601
L604
120 Ohm
2A
1608
Q604
MOFET
ZXMP3F30
(3.0A)
Spec) 250mV↓
88Vrms
249mVpp
248mVpp
27Vrms
169mVpp
5.08V
5.03V
5.02V
1.26V
5.07V
0.2mA
0.1uF
50V
25V
10V
2012
16V
1005
10V
1005
0.1uF
16V
Input
DTV
Comp
HDMI
910mA 900mA 850mA
Input
DTV
Comp
HDMI
750mA 630mA 650mA
+5V
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