LG 42LV5500 Training Presentation page 60

42LV5500 Main (Front Side) Component Voltages
IC103 NVRAM
Pin for USB
[1] n/c
[2] 0V
[3] 3.34V
[4] 0V
[5] 3.22V
[6] 3.22V
[7] 0V (Gnd)
[8] 3.34V
IC501 +0.9V_CORE
Pin DC to DC
[1] 3.17V
[2] 0.59V
[3] 0.44V
[4] 11.95V
[5] 0V
[6] 5.33V
[7] 4.6V
[8] 5.81V
[9] 0.95V
[10] 1.36V
IC504 +2.5V BCM
Pin Regulator
[1] n/c
[2] 4.92V (En)
[3] 3.47V (In)
[4] 3.49V (Ctl)
[5] n/c
[6] 2.57V (Out)
[7] 0.6V
[8] 0V (Gnd)
IC505 (+3.3V_NORMAL)
Pin Regulator
[1] 0V (Gnd)
[2] 11.96V (In)
[3] 0V (Gnd)
[4] 0.8V
[5] 0.79V
[6] 3.47V (PWR On/Off2_2)
[7] 3.35V (Out)
[8] 3.35V (Out)
IC506 Switched IC801
Pin 5V for USB 2
[1] 0V (Gnd)
[2] 11.98V (In)
[3] 0V (Gnd)
[4] 0.79V
[5] 3.48V
[6] 3.48V (PWR On/Off2_1)
[7] 4.96V (Out)
[8] 4.96V (Out)
IC507 (+5V_NORMAL)
Pin Regulator
[1] 0V (Gnd)
[2] 11.98V (In)
[3] 0V (Gnd)
[4] 0.79V
[5] 3.48V IC802
[6] 3.48V (PWR On/Off2_1)
[7] 4.96V (Out)
[8] 4.96V (Out)
IC508 (+1.5V_DDR)
Pin Regulator
[1] 3.46V
[2] n/c
[3] 3.46V (In)
[4] 3.49V (PWR On/Off1)
[5] 0V (Gnd)
[6] 3.31V
[7] 0.79V
[8] 1.5V (Out) Q1001
Q901 IR Buffer
Pin 2nd
B 0.02V
C 3.48V On when wireless dongle connected
E Gnd
Q1002
Q902 IR Buffer
Pin 1st
B 0.57V
C 0.02V
E Gnd On when wireless dongle connected
RGB IC803
Pin Data Buffer Pin
[1] 1.81V [1] 3.5V
[2] 1.81V [2] 5.64V
[3] 3.72V [3] 0V
[4] 1.8V [4] 0V
[5] 1.8V [5] (-5.56V)
[6] n/c (4.44V) [6] (-5.59V)
[7] 0V (Gnd) [7] n/c (5.64V)
[8] n/c (4.43V) [8] n/c (0V)
[9] n/c (1.79V) [9] n/c (3.49V)
[10] n/c (1.79V) [10] n/c (0V)
[11] 3.72V [11] n/c (3.34V)
[12] 1.81V [12] 3.48V
[13] 1.81V [13] 0V
[14] 5V (Vcc In) [14] (-5.59V)
[15] 0V (Gnd)
EDID Data [16] 3.5V (Vcc In)
Pin PC
[1] 0V (Gnd) IC1203
[2] 0V (Gnd) Pin
[3] 0V (Gnd) [1] 0V (Gnd)
[4] 0V (Gnd) [2] 4.96V (Vcc In)
[5] 4.73V [3] 4.96V (Vcc In)
[6] 4.73V [4] 3.34V (USB Ctl2)
[7] 4.73V [5] 3.17V
[8] 4.73V (Vcc In) [6] 4.96V (Out)
[7] 4.96V (Out)
[8] n/c (0V)
IC1204
Wireless Vcc Pin
Pin Driver [1] 0V (Gnd)
B 0.02V [2] 4.96V (Vcc In)
C 24.5V [3] 4.96V (Vcc In)
E Gnd [4] 3.34V (USB Ctl1)
[5] 3.17V
[6] 4.96V (Out)
Wireless Vcc [7] 4.96V (Out)
Pin Switch [8] n/c (0V)
S 24.5V
G 24.5V
D 0V
60
RS232 IC2103 (+1.26V_TU)
Routing Pin Regulator
[1] 0V (Gnd)
[2] 1.27V (Out)
[3] 3.33V (In)
Q501 RL_ON (PWR_On)
Pin 1st Driver
B 0.64V
C 0V
E Gnd
Q502 PWR_ON
Pin Switch
[1] 3.5V (In)
[2] 0.67V
[3] 2.62V (Out)
Q503 0.9V FET
EDID Data Pin Switch
PC [1] 0.95V
[2] 0.95V
[3] 0.95V
[4] 1.36V
[5] 11.96V
[6] 11.96V
[7] 11.96V
[8] 11.96V
Q508 0.9V FET
EDID Data Pin Switch
PC [1] 0V (Gnd)
[2] 0V (Gnd)
[3] 0V (Gnd)
[4] 4.6V
[5] 0.95V
[6] 0.95V
[7] 0.95V
[8] 0.95V
May 2011 42LV5500 LCD-DV