LG 42PW350 - Circuit Interconnect Diagram Page 2 (DC Voltages)

42PW350 Main Board (Front Side) Component Voltages
IC103 Serial IC502 +1.26V_VDDC IC507 +5V_TU IC1404 +1.0
V
Q501 +5V_ST_EN
Flash Pin Regulato
r
Pin Regulato
r
Pin Regulato
r
Pin Switch
Pin For HDMI [1] 5V (In) [1] 11.1V [1] 5V (In) [B] 0.7V
[1] Gnd [2] 5V (In) [2] 17V [2] 0V [C] 5.2V
[2] Gnd [3] 0V [3] 3.1V [3] 0V [E] 5.2V
[3] Gnd [4] 0V [4] 1.8V [4] 0V
[4] Gnd [5] 081V [5] 0.8V [5] 0V Q901 LED_RED
[5] 3.29V [6] 0.81V [6] 0.6V [6] 0.8V Pin Drive
r
[6] 3.29V [7] 0.72V [7] 0V [7] 0.65V [B] 0.71V
[7] 3.29V [8] 0.53V [8] 5V [8] 0.54V [E] 0V
[8] 3.29V [9] 1.7V [9] 1.7V [C] 0V
[10] 1.3V IC600 +1.2V_DE [10] 1.05V
IC501 +1.5V_DDR_IN [11] 1.3V Pin Regulato
r
[11] 1.05V Q1400 Write Protect
Pin Regulato
r
[12] 1.3V [1] 3.3V (In) [12] 1.05V Pin for IC1402
[1] 5V (In) [13] 6.47V [2] 1.26V (Out) [13] 6.1V [B] 0V
[2]
5V (In)
[14]
0 25V
[3]
Gnd
[14]
0 15V
[E]
0V
[2]
5V
(In)
[14]
0
.
25V
[3]
Gnd
[14]
0
.
15V
[E]
0V
[3] 0V [15] 2.96V [15] 2.9V [C] 3.18V
[4] 0V [16] 5V (In) [16] 0V
[5] 0V Q1401 SCL_3.3V_MOD
[6] 0.81V IC504 +3.3V_AVDD D200 Reset IC1406 +3.3V_VS
T
Pin Buffe
r
[7] 0.72V Pin Regulato
r
Pin Speed Up Pin +3.3V_3D [B] 3.28V
[8] 0.53V [1] 0V [A1] 0V [1] 0V [C] 3.3V
[9] 1.7V [2] 3.3V (Out) [C] 0V [2] 3.31V (Out) [E] 3.28V
[10] 1.58V [3] 5.2V (In) [A2] 0V [3] 5V (In)
[11] 1.58V Q1402 SDA_3.3V_MOD
[12] 1.58V IC506 +3.3
V
D501 Reg IC1407 (+1.8V) Pin Buffe
r
[13] 6.7V Pin Regulato
r
Pin IC507 Pin Regulato
r
[B] 3.28V
[14] 0.12V [1] 0V [A] 0V [1] 0V [C] 3.3V
[15] 2.98V [2] 3.3V (Out) [C] 5V [2] 1.8V (Out) [E] 3.28V
[16] 2.98V (In) [3] 5.2V (In) [3] 3.3V (In)
42PW350 Main Board (Back Side) Component Voltages
IC102
HDCP
IC505
+2 5V AVDD
IC900
RS232 Tx/Rx
IC1101
USB 5V
Q800
HDMI CEC
Q1305
Tuner
IC102
HDCP
IC505
+2
.
5V
_
AVDD
IC900
RS232
Tx/Rx
IC1101
USB
5V
Q800
HDMI
CEC
Q1305
Tuner
EEPROM Pin Regulato
r
Pin Pin Limite
r
Pin Buffe
r
Pin CVBS
Pin [1] 3.3V (In) [1] 3.3V [1] Gnd [1 B] 3.29V [B] 3.63V
[1] Gnd [2] Gnd [2] 5.6V [2] 5.1V (In) [2 S] 3.29V [C] 0V
[2] Gnd [3] 2.52V (Out) [3] 0V [3] 5.1V (In) [3 D] 3.23V [E] 4.3V
[3] 3.3V [4] 0V [4] 3.3V [4 G] 3.3V
[4] Gnd IC801 IC801, IC802 [5] (-5.6V) [5] 0V D801 Biasing
[5] 3.3V EDID Data [6] (-5.6V) [6] 5.1V (Out) Q806 Hot Pin for Q800
[6] 3.3V Pin For HDMI [7] 5.7V [7] 5.1V (Out) Pin Swap [A1] 3.28V
[7] 3.3V [1] Gnd [8] 0V [8] n/c [B] 0V [C] 3.32V
[8] 3.3V [2] Gnd [9] 3.3V [C] 0V [A2] 0V
[3] Gnd [10] 0V IC1402 Serial [E] 0V
IC109 EEPROM [4] Gnd [11] 3.3V Pin Flash D803 5
V
for Micro [5] 3.3V [12] 3.3V [1] 3.29V Q807 Hot Pin Routing
Pin [6] 3.3V [13] 0V [2] 0V Pin Swap [A1] 0V
[1] Gnd [7] 3.3V [14] (-5.6V) [3] 3.3V [B] 0.1V [C] 3.32V
[2] Gnd [8] 3.3V [15] Gnd [4] 0V [C] 0V [A2] 3.28V
[3] Gnd [16] 3.3V (B+) [5] 0V [E] 0V
[
4
]
Gnd IC804 EDID Data
[
6
]
0V D804 5
V
[]
[]
[5] 3.3V Side Input IC901 EDID Data [7] 3.29V Q900 Hot Pin Routing
[6] 0V Pin For HDMI for PC [8] 3.29V Pin Swap [A1] 3.28V
[7] 3.3V [1] Gnd Pin For HDMI [B] 0.63V [C] 3.32V
[8] 3.3V [2] Gnd [1] Gnd Q103 EDID [C]0V [A2]0V
[3] Gnd [2] Gnd Pin WP [E] 0V
IC500 3.3V_VS
T
[4] Gnd [3] Gnd [B] 0V D805 5
V
Pin Regulato
r
[5] 3.3V [4] Gnd [C] 5V Q1304 Tune
r
Pin Routing
[1] Gnd [6] 3.3V [5] 3.3V [E] 0V Pin SIF [A1] 5.1V
[2] 3.3V (Out) [7] 3.3V [6] 3.3V [B] 0.23V [C] 4.9V
[3] 5.09V (In) [8] 3.3V [7] 3.3V Q500 +5V_ST_EN [C]0V [A2]0V
[8] 3.3V Pin Switch CTL [E] 0.92V
[B] 0.64V
[C] 0V
[E] 0V