Lg Electronics 47LE8500 Manuale Utente
July 2010 LCD TV
47LE8500
68
MAIN BOARD SECTION
MAIN BOARD SECTION
The Main board receives its operational B+ from the Power Supply via P8000.
There are two LVDS cable feeds that are output from the on-board T-CON (TFT Driver) section
directly to the Panel. These carry the duel 12 bit LVDS Video signals and the TruMotion 60Hz duel 12
bit LVDS. These signals have already been prepared for the Panel’s H and V boards.
The Main board also includes the Tuner, Audio and Audio/Video inputs and selection circuits.
There are two LVDS cable feeds that are output from the on-board T-CON (TFT Driver) section
directly to the Panel. These carry the duel 12 bit LVDS Video signals and the TruMotion 60Hz duel 12
bit LVDS. These signals have already been prepared for the Panel’s H and V boards.
The Main board also includes the Tuner, Audio and Audio/Video inputs and selection circuits.
STAND-BY
• STBY 3.5V (P8000 pins 9~12)
The Main board also develops several B+ sources on the board.
LVDS
• Panel_VCC (12V Not generated, but switched
from the 12V arriving from the SMPS.
AUDIO
• 1.8V
• 3.3V
• 3.3V
BCM IC900 Video Processors
• 1.2V
IC9301 Tru-Motion and Dimming IC.
• 1.26V_MEMC, 1.5V_MEMC,
, D1.5V, D1.8V, and 3.3V
•T-CON IC9001
• 3.3V_VCC, -5V_VGL, 25V_VGH,
16V_VDD and HVDD (7.7V)
RUN
• 12V pins 13 and 14
• 24V pins 17 and 18.
• 24V pins 17 and 18.
TUNER and VSB CIRCUIT
• 5V_Normal which is used to make 5V TU
• 5V_TU
• 3.3V_TU
• 1.26V_TU
• 5V_TU
• 3.3V_TU
• 1.26V_TU
STAND-BY VOLTAGES
• 3.3V_ST (Voltage direct from SMPS)
GENERAL
• 5V_Normal
• 5V_EXT
• 5V USB
• 5V_EXT
• 5V USB
Input Voltages from SMPS.
WIRELESS VOLTAGES
• 24V (Switched from 24V from SMPS)
Leandro
Palmeira