LG 50PV450 Manual page 159

50PV450 Main Board (Front Side) Component Voltages
IC203 Winbond Serial IC308 +1.3V_VDDC
Pin Flash Pin Regulator
[1] 3.3V [1] 0.8V*
[2] 3.3V [2] 0V
[3] n/c [3] 5V
[4] n/c [4] 6.1V
[5] n/c [5] 5V
[6] n/c [6] 1.3V
[7] 0.08V [7] 1.3V
[8] 3.3V [8] 4.5V
[9] 0V *Caused Video to Mute
[10] Gnd [ ]
[11] n/c
[12] n/c
[13] n/c
[14] n/c
[15] 0.08V
[16] 0.08V
50PV450 Main Board (Back Side) Component Voltages
IC202 NVRAM IC303 3.3V_MST
Pin Regulator
Pin [1] Gnd
[1] Gnd [2] 3.3V (Out)
[2] Gnd [3] 5.04V (In)
[3] G d [3] Gnd
[4] Gnd IC304 1.2V_DVDD Reg
[5] 3.3V Pin Dig Ch Only
[6] 3.3V [1] Gnd
[7] Gnd [2] 1.2V (Out)
[8] 3.3V [3] 3.3V (In)
IC301 1.8V_MST IC305 3.3V_TU
Pin Regulator Pin Regulator
[1] 0.6V [1] 2.1V
[2] 1.8V (Out) [2] 3.3V (Out)
[3] 3.3V (In) [3] 5.1V (In)
IC302 3.3V_VST IC307 1.8V_TU
Pin Regulator Pin Regulator
[1] Gnd [1] Gnd
[2] 3.3V (Out) [2] 1.8V (Out)
[3] 5.09V (In) [3] 3.3V (In)
Q402 Tuner CVBS D1 Reset
Pin Buffer (Analog) Pin Speed Up
[B] 1.1V [A1] Gnd
[E] 1.7V [A] 0V
[C] Gnd [A2] Gnd
Q404 Tuner SIF D2 LED-R
Pin Buffer (Digital) Pin Routing
[B] 1.2V [A1] 0V
[E] 1.8V [C] 0.13V
[C] Gnd [A2] 0.28V
Q502 HDMI CEC
Pin Buffer D501 B+ Routing
[1 B] Gnd Pin to IC502
[2 S] 3.18V [A1] 5.1V
[3 D] 3.29V [A] 4.55V
[4 G] 3.3V [A2] 0V
IC501 HDCP Data IC703 RS232 Tx/Rx Q301
Pin EEPROM Pin
[1] Gnd [1] 3.3V
[2] Gnd [2] 5.6V
[3] 3.3V [3] 0V
[4] Gnd [4] G d [4] 0V [4] 0V
[5] 3.3V [5] (-5.5V)
[6] 3.3V [6] (-5.5V)
[7] 3.3V [7] (-5.5V)
[8] 3.3V [8] 0V
[9] 3.3V
IC502 IC503, IC504 [10] 3.3V
EDID Data [11] n/c
Pin For HDMI [12] n/c
[1] Gnd [13] 0V
[2] Gnd [14] 5.6V
[3] Gnd [15] Gnd
[4] Gnd [16] 3.3V (B+)
[5] 3.3V
[6] 3.3V IC704 USB 5V
[7] 3.3V Pin Limiter
[8] 3.3V [1] Gnd
[2] 5.1V (In)
IC602 RGB [3] 5.1V (In)
Pin Earphone Amp [4] 3.3V
[1] Gnd [5] 0V
[2] Gnd [6] 5.1V (Out)
[3] Gnd [7] 5.1V (Out)
[4] Gnd [8] n/c
[5] 5.09V
[6] 5.09V
[7] 0V
[8] 5.09V
D504 B+ Routing
Pin to IC503
[A1] 5.1V
[A] 4.55V
[A2] 0V
D505 B+ Routing
Pin to IC504
[A1] 0V
[A] 4.54V
[A2] 5.0V
Driver for 5V_MST Q702 RS232
Pin Switch Q302 Pin Tx Buffer
[B] 0.6V [B] 0.6V
[C] 0V [C] 0V
[E] Gnd [E] Gnd
Q302 5V_MST D502 HDMI CEC Limiter
Pin Switch Pin
[G] 0V [A1] 0V
[S] 5.09V [A2] 3.28V
[D] 5V [C] 3.28V
Q303 3.3V_PVSB
Pin Dig Ch Only
[G] 0V
Only on
[S] 3.3V
with Dig
[D] 3.3V Channel
Q304 urns on 3.3V_PVSB
Pin Switch Q303
[B] 0.64V
Only on y
[C] 0V
with Dig
Channel
[E] Gnd
Q501, Q503
Q504 Hot Swap
Pin Switch for HDMI
[B] 0V
[C] 0V
[E] Gnd