LG 42LV5500 Training Presentation page 87

42LV5500 MAIN (FRONT SIDE) SIMICONDUCTORS
IC103 NVRAM IC505
Pin for USB Pin
[1] n/c [1] 0V (Gnd)
[2] 0V [2] 11.96V (In)
[3] 3.34V [3] 0V (Gnd)
[4] 0V [4] 0.8V
[5] 3.22V [5] 0.79V
[6] 3.22V [6] 3.47V (PWR On/Off2_2)
[7] 0V (Gnd) [7] 3.35V (Out)
[8] 3.34V [8] 3.35V (Out)
IC501 +0.9V_CORE IC506
Pin DC to DC Pin
[1] 3.17V [1] 3 17V [1] 0V (Gnd) [1] 0V (Gnd)
[2] 0.59V [2] 11.98V (In)
[3] 0.44V [3] 0V (Gnd)
[4] 11.95V [4] 0.79V
[5] 0V [5] 3.48V
[6] 5.33V [6] 3.48V (PWR On/Off2_1)
[7] 4.6V [7] 4.96V (Out)
[8] 5.81V [8] 4.96V (Out)
[9] 0.95V
[10] 1.36V IC507
Pin
IC504 +2.5V BCM [1] 0V (Gnd)
Pin Regulator [2] 11.98V (In)
[1] n/c [3] 0V (Gnd)
[2] 4.92V (En) [4] 0.79V
[3] 3.47V (In) [5] 3.48V
[4] 3.49V (Ctl) [6] 3.48V (PWR On/Off2_1)
[5] n/c [7] 4.96V (Out)
[6] 2.57V (Out) [8] 4.96V (Out)
[7] 0.6V
[8] 0V (Gnd)
42LV5500 MAIN (BACK SIDE) SIMICONDUCTORS
IC502 Power Det Gen Q101
Pin (For +12V) Pin
[1] 0V (Gnd) [B] 0V (Gnd)
[2] 3.8V (In) [G] 3.3V
[3] 3.73V (Out) [S] 4.74V
[D] 3.34V
IC503 Power Det Gen
Pin (For +24V) Q102
[1] 0V (Gnd) Pin
[2] 3.7V (In) [B] 0V (Gnd)
[3] 3.73V (Out) [G] 3.3V
[S] 4 74V [S] 4.74V
IC601 EEPROM [D] 3.34V
Pin Micro
[1] 0V (Gnd) Q504 INV_CTL (Drv_On)
[2] 0V (Gnd) Pin
[3] 3.49V B 0V (INV ON) En
[4] 0V (Gnd) C 3.28V (Out)
[5] 3.49V E Gnd
[6] 3.49V
[7] 0V (Gnd) Q505
[8] 3.50V (Vcc In) Pin
B 0V
C 0.68V
E Gnd
(+3.3V_NORMAL) IC508 (+1.5V_DDR)
Regulator 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)
Switched Q901 IR Buffer
5V for USB 2 Pin 2nd
B 0 02V B 0.02V
C 3.48V
E Gnd
Q902 IR Buffer
Pin 1st
B 0.57V
C 0.02V
E Gnd
(+5V_NORMAL)
Regulator
RGB_DDC_SDA Q506 PANEL_VCC
FET Buffer Pin
Control 2nd Driver
B 0.67V
C 0V
E Gnd
Q507 PANEL_VCC
RGB_DDC_SCL Pin Switch
FET Buffer S 11.97V (In)
G 1.8V (Enable)
D 11.94V (Out)
Q710 CEC Remote
Pin HDMI CEC
[B] 3.47V
Driver [G] 3.51V
[S] 3.47V
[D] 3.49V
Q801 Earphone
PANEL_VCC Pin Mute
B 0V
Control 1st Driver
C 3.35V
E Gnd
IC801 RGB Q1001
Pin Data Buffer Pin
[1] 1.81V
[2] 1.81V
[3] 3.72V
[4] 1.8V On when wireless dongle connected
[5] 1.8V
[6] n/c (4.44V) Q1002
[7] 0V (Gnd) Pin
[8] n/c (4.43V)
[9] n/c (1.79V)
[10] n/c (1.79V)
[11] 3.72V On when wireless dongle connected
[12] 1 81V [12] 1.81V
[13] 1.81V IC803
[14] 5V (Vcc In) Pin
[1] 3.5V
IC802 EDID Data [2] 5.64V
Pin PC [3] 0V
[1] 0V (Gnd) [4] 0V
[2] 0V (Gnd) [5] (-5.56V)
[3] 0V (Gnd) [6] (-5.59V)
[4] 0V (Gnd) [7] n/c (5.64V)
[5] 4.73V [8] n/c (0V)
[6] 4.73V [9] n/c (3.49V)
[7] 4.73V [10] n/c (0V)
[8] 4.73V (Vcc In) [11] n/c (3.34V)
[12] 3.48V
[13] 0V
[14] (-5.59V)
[15] 0V (Gnd)
[16] 3.5V (Vcc In)
Q904 IR Wireless Pass D707
Pin 2nd Driver Pin
B 0.02V A1 4.96V
C 3.48V
E Gnd A2 0V
Q906 IR Wireless Pass D708
Pin 1st Driver Pin
B 0.57V A1 4.96V
C 0V
E Gnd A2 0V
Q2104 Tuner SIF D710
Pin (Sound) Buffer Pin
B 0.23V A1 4.96V
C 0V (Gnd)
E 0.93V A2 0V
Q2106 Tuner Video D711
Pin (Analog) Buffer Pin
B 3.67V A1 4.96V
C 0V (Gnd)
E 4.35V A2 0V
Wireless Vcc IC1203 EDID Data
Driver Pin
B 0.02V [1] 0V (Gnd)
C 24.5V [2] 4.96V (Vcc In)
E Gnd [3] 4.96V (Vcc In)
[4] 3.34V (USB Ctl2)
[5] 3.17V
Wireless Vcc [6] 4.96V (Out)
Switch [7] 4.96V (Out)
S 24.5V [8] n/c (0V)
G 24.5V
D 0V IC1204 EDID Data
Pin
[1] 0V (Gnd) [1] 0V (Gnd)
RS232 [2] 4.96V (Vcc In)
Routing [3] 4.96V (Vcc In)
[4] 3.34V (USB Ctl1)
[5] 3.17V
[6] 4.96V (Out)
[7] 4.96V (Out)
[8] n/c (0V)
IC2103 (+1.26V_TU)
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
5V Pull-Up to D713 Bias for Q710
DDC_SCL/SDA_1 Pin HDMI CEC
A1 0V
C 5V C 3.45V
A2 3.5V
5V Pull-Up to D810 5V Routing to
DDC_SCL/SDA_3 Pin IC802 RGB EDID
A1 4.73V
C 5V C 5.01V
A2 0.07V
5V Pull-Up to
DDC_SCL/SDA_2
C 5V
5V Pull-Up to
DDC_SCL/SDA_4
C 5V
Q502 PWR_ON
PC Pin Switch
[1] 3.5V (In)
[2] 0.67V
[3] 2.62V (Out)
Q503 0.9V FET
Pin Switch
[1] 0.95V
[2] 0.95V
[3] 0.95V
[4] 1.36V
PC [5] 11.96V
[6] 11 96V [6] 11.96V
[7] 11.96V
[8] 11.96V
Q508 0.9V FET
Pin Switch
[1] 0V (Gnd)
[2] 0V (Gnd)
[3] 0V (Gnd)
[4] 4.6V
[5] 0.95V
[6] 0.95V
[7] 0.95V
[8] 0.95V