LG 42LV5500 Training Presentation page 62

42LV5500 Main (Back Side) Component Voltages
IC502
Pin
[1] 0V (Gnd)
[2] 3.8V (In)
[3] 3.73V (Out)
IC503
Pin
[1] 0V (Gnd)
[2] 3.7V (In)
[3] 3.73V (Out)
IC601
Pin
[1] 0V (Gnd)
[2] 0V (Gnd)
[3] 3.49V
[4] 0V (Gnd)
[5] 3.49V
[6] 3.49V
[7] 0V (Gnd)
[8] 3.50V (Vcc In)
Q101
Pin
[B] 0V (Gnd)
[G] 3.3V
[S] 4.74V
[D] 3.34V
D710
Pin
A1 4.96V
C 5V
A2 0V
Power Det Gen Q102 RGB_DDC_SCL
(For +12V) Pin
[B] 0V (Gnd)
[G] 3.3V
[S] 4.74V
[D] 3.34V
Power Det Gen
(For +24V) Q504 INV_CTL (Drv_On)
Pin
B 0V (INV ON) En
C 3.28V (Out)
E Gnd
EEPROM
Micro Q505
Pin
Control 1st Driver
B 0V
C 0.68V
E Gnd
Q506
Pin
Control 2nd Driver
B 0.67V
C 0V
RGB_DDC_SDA E Gnd
FET Buffer
Q507
Pin
S 11.97V (In)
G 1.8V (Enable)
D 11.94V (Out)
5V Pull-Up to D711
DDC_SCL/SDA_2 Pin DDC_SCL/SDA_4
A1 4.96V
C 5V
A2 0V
Q710 CEC Remote
FET Buffer Pin HDMI CEC
[B] 3.47V
[G] 3.51V
[S] 3.47V
[D] 3.49V
Q801 Earphone
Driver Pin
B 0V
C 3.35V
E Gnd
PANEL_VCC Q904 IR Wireless Pass
Pin 2nd Driver
B 0.02V
C 3.48V
E Gnd
PANEL_VCC
Q906 IR Wireless Pass
Pin 1st Driver
B 0.57V
C 0V
E Gnd
PANEL_VCC
Switch
5V Pull-Up to D713 Bias for Q710
Pin HDMI CEC
A1 0V
C 3.45V
A2 3.5V
62
Q2104 Tuner SIF
Pin (Sound) Buffer
B 0.23V
C 0V (Gnd)
E 0.93V
Q2106 Tuner Video
Pin (Analog) Buffer
Mute B 3.67V
C 0V (Gnd)
E 4.35V
Q1701 AMP_MUTE
Pin Pin 19 IC1702
B 0V
C 3.36V
E Gnd
D707 5V Pull-Up to
Pin DDC_SCL/SDA_1
A1 4.96V
C 5V
A2 0V
D708 5V Pull-Up to
Pin DDC_SCL/SDA_3
A1 4.96V
C 5V
A2 0V
D810 5V Routing to
Pin IC802 RGB EDID
A1 4.73V
C 5.01V
A2 0.07V
May 2011 42LV5500 LCD-DV