LG 42LH90 Manual page 94

42LH90 MAIN (FRONT SIDE) SIMICONDUCTORS
Serial Flash +3.3V_FE
IC101 IC704
Pin Memory Pin Regulator
[1] 0.05V [1] 0.8V
[2] 3.2V [2] Gnd
[3] 2.5V [3] 5V
[4] Gnd [4] 7.5V
[5] 0V [5] 5V
[6] 0V [6] 3.3V
[7] 3.3V [7] 3.3V
[8] 3.3V [8] 2.1V
HDCP +1.26V_VDDC
IC105 IC705
Pin EEPROM Pin Regulator
[1] Gnd [1] 0.8V
[2] Gnd [2] Gnd
[3] 3.29V [3] 5V
[4] Gnd [4] 6V
[5] 3.3V [5] 3.2V
[6] 3.3V [6] 1.2V
[7] 0V [7] 1.26V
[8] 3.3V [8] 5V
+1.8V_DDR 5V_EXT
IC701 IC706
Pin Regulator Pin Memory
[1] 0V [1] 0.8V
[2] 3.2V [2] Gnd
[3] 3.2V [3] 12V
[4] n/c [4] 9.6V
[5] n/c [5] 5V
[6] 1.8V [6] 4.97V
[7] 0.8V [7] 4.97V
[8] Gnd [8] 1.9V
42LH90 MAIN (BACK SIDE) SIMICONDUCTORS
Reset Gen +3.3V_ST
IC103 IC703
Pin Mstar IC100 Pin Regulator
[1] Gnd [1] 0V
[2] 0V [2] 1.8V
[3] 3.3V [3] 3.21V
RGB (PC)
IC104
Pin EEPROM SPI Flash
IC800
[1] Gnd Pin
[2] Gnd [1] 0.12V
[3] Gnd [2] 1.13V
[4] Gnd [3] 3.26V
[5] 3.22V [4] Gnd
[6] 3.22V [5] 0.06V
[7] 0V [6] 1.2V
[8] 3.22V [7] 3.27V
[8] 3.27V
Power Det
IC107
Pin Gen 9V Reg
IC1003
[1] Gnd Pin to IC1002
[2] 3.9V [1] 12V
[3] 3.28V [2] Gnd
[3] 8.9V
+3.3V_ST For Tuner Voltage 5V
IC702
+3.3V_AVDD_MPLL
Pin Regulator
[1] Gnd
[2] 3.29V
[3] 5.11V
+1.8V_MEMC +3.3V_PVSB
IC707 IC1001
Pin Regulator Pin +3.3V_FE
[1] 0.8V [1] 4.94V
[2] Gnd [2] 4.94V
[3] 4.92V [3] Gnd
[4] 6.5V [4] 3.4V
[5] 4.8V [5] 1.25V
[6] 1.8V
[7] 1.8V +5V_TU
IC1002
[8] 4.8V Pin Tuner
[1] 8.92V
+1.26V_MEMC [2] 1.88V
IC708
Pin Regulator [3] 5.04V
[1] Gnd [4] 0V
[2] 0.8V [5] Gnd
[3] 1.26V
[4] 1.26V SPIF Optical
IC1203
[5] 1.8V Pin Audio
[6] 5V [1] 1.58V
[7] 1.26V [2] 3.2V
[8] 5V [3] Gnd
[4] 1.61V
+1.26V_PVSB [5] 3.21V
IC1000
Pin Regulator
[1] 0V
[2] 3.39V
[3] 3.4V
[4] 0V
[5] 0V
[6] 1.21V
[7] 0.8V
[8] Gnd
RGB USB +5V
IC1200 IC1202
Pin EEPROM Pin Switch
[1] Gnd [1] 4.95V
[2] Gnd [2] Gnd
[3] Gnd [3] 3.21V
[4] Gnd [4] 4.95V
[5] 4.82V [5] 0V
[6] 4.82V [6] 4.95V
[7] 4.82V
[8] 4.82V Reset Gen
IC3505
Pin for IC3502
RS232 [1] 3.3V
IC1201
Pin Rx/Tx [2] Gnd
[1] 3.3V [3] 3.22V
[2] 5.56V
[3] 0.02V PWR On Delay
Q105
[4] 0.03V Pin Q2405
[5] 5.46V B 0V
[6] 5.5V C 1.95V
[7] 5.5V E Gnd
[8] 0V
[9] 3.29V Audio Mute
Q600
[10] 3.24V Pin Switch
[11] 0.02V B 0.08V
[12] 3.29V C 3.26V
[13] 0V E Gnd
[14] 5.5V
[15] Gnd
[16] 3.29V
+3.3V_Dimming W/P IC101
IC3500 Q100
Pin Regulator Pin
[1] Gnd B 0V
[2] 3.3V C 2.5V
[3] 5V E Gnd
+1.8V Reg S5/S6 Reset
IC3503 Q106
Pin Dimming Pin Mstar
[1] 0.58 B 0V
[2] 1.8V C 3.28V
[3] 3.19V E 0V
Dimming INV_ON
IC3504 Q702
Pin EEPROM Pin Inverter
[1] Gnd B 0.05V
[2] Gnd C 4.66V
[3] Gnd E Gnd
[4] Gnd
[5] 3.3V
[6] 3.3V
[7] 0V
[8] 3.3V
5V Switch Tuner Video
Q703 Q1001
Pin Control Pin Buffer
B 0.6V B 3.09V
C 0.03V C 0V
E Gnd E 3.72V
1st 12V LVDS Audio Mute
Q704 D102
Pin Switch Control Pin Routing
B 0.05V A1 0.047V
C 0.65V C 0.089V
E Gnd A2 0V
2nd 12V LVDS Shunt for
Q705 D500
Pin Switch Control Pin IC501
B 0.65V A1 3.25V
C 0.0V C 3.12V
E Gnd A2 0V
Tuner SIF 5V Routing
Q1000 D1223
Pin Buffer Pin for IC1200
B 2.4V A1 0V
C 0V C 4.82V
E 3.85V A2 5.11V
+5V/12VLVDS
Q706
Pin Switch
[1] 5.1V
[2] 0.29V
[3] 11.9V
[4] 5.99V
[5] 11.98V
[6] 11.98V
[7] 5.06V
[8] 5.06V
IR RS232
Q1200
Pin Buffer
B 0.634V
C 0.97V
E Gnd
Speed Up Reset
D1000
Pin IC1004
C 3.4V
A 3.38V