LG 50PV450 Manual page 137

50PV450 Main (Front and Back) Layout Drawing
P301 "Main" to P813 "SMPS"
Pin Label Stby Run Diode
1-2 a 0V 17V OL
17V
3-4 Gnd Gnd Gnd
Gnd
5-7 a 0.46V 5.1V 0.88V
5.1V
8 a c 2.87V 4.9V 3.05V
Error_Det
9-12 Gnd Gnd Gnd
Gnd
13-14 3.4V 5.1V 1.02V
Stby_5V
a
15 0V 2.4V 2.6V
RL_ON
a d
AC_Det 0V 4.4V 2.92V
16
b
17 M_On 0V 3.2V OL
e
Gnd Gnd Gnd
18 Auto_Gnd
P801 "Main" to "Speakers"
Pin Label SBY Run Diode
1 R- 0V 8.5V Open
2 R+ 0V 8.5V Open
3 L- 0V 8.5V Open
4 L+ 0V 8.5V Open
P704 "MAIN" to "Front IR"
Label STBY RUN
Pin
IR
1 3.3V 3.9V
2
Gnd Gnd Gnd
3 Key_Ctl_0
3.3V 3.3V
4 Key_Ctl_1
3.3V 3.3V
5 LED_Red
2.7V 0V
6 Gnd Gnd Gnd
7
EYE_SCL 3.1V 3.1V
8
EYE_SDA 3.1V 3.1V
9 Gnd Gnd Gnd
10 3.3_VST 3.3V 3.3V
11
3.3_MST 0V 5V
12
LED_Blue 0V 0V
13
Touch_Ver_Check 0.19V 0.19V
14 n/c n/c n/c
15 n/c n/c n/c
P701
P301
1 3
2
P704
2
IC303
3.3V_MST
IC801
P801
Audio Amp
IC703
Diode Chk
D502
EDID
3.14V
B E
IC502
3
4
Gnd
C
Q502
1 2
1.18V
Q501
CEC FET
1.18V
B E
D501
A2
OL C
C A1
Gnd IC503
OL
Q702
EDID
OL E
A2 B E
Q503
B
C
C
Gnd A1
D504
IC602
1.3V
1.24V
RGB & Earphone Audio
1.02V
1.75V
OL
OL
MAIN BOARD
p/n: EBU60952917 or
p/n: EBR72650101
D2
C
IC201
Q301
A1 A2
Gnd Out
B E IC302
DDR
C
In
3.3VST
G S
D
Q302
5V_MST
Mstar
D1
A2
X1
C
A1
Micro/Video
12Mhz
Microprocessor
Grayed Out
Components are on the back
RS232 Buffer
C
137
IC301
1 2 3
2
1.8V_MST
IC202
IC203 IC501
NVRAM
HDCP
Flash Memory
PVSB Processor
X402
25Mhz
IC304
Q304
Out
B E
G S
C D
TUNER
In OG
Q303
+1.2V_DVDD
+3.3V_MST
X401 31.875Mhz
IC401
Tuner Control
May 2011 50PV450 Plasma
L313
IC308
1.3V_VDDC
IC704
USB 5V
IC402
Q504 HDMI3
B E
C
Q402
D505
E B
C
A1
C
C
B E
Q404
A2
IC504
R
EDID
1 2 3
IC305
3.3V_TU
2 L
1 2 3
IC307
2
V
1.8V_TU
AV IN 2