LG 32LD350 - Main Board Section

MAIN BOARD SECTIONMAIN BOARD SECTION
The Main board receives its operational B+ from the Power Supply via P402.
There is only one LVDS cable that feeds to a Panel Interface board. The LVDS cable feeds 10 bit
LVDS Video signals and 12V through the Panel Interface board to the Panel These signals have not
LVDS
Video
signals
and
12V
through
the
Panel
Interface
board
to
the
Panel
.
These
signals
have
not
been prepared for the Panel’s H and V boards. This is done in the panel itself.
The Main board also includes the Tuner, Audio and Audio/Video inputs and selection circuits.
STAND
BY
RUN
Input Voltages from SMPS.
STAND
-
BY
• STBY 3.5V (P402 pins 9~12)
The Main board also develops several B+ sources on the board.
RUN
• 12V pins 13 and 14
• 24V pins 17, 19 and 21.
LVDS
• Panel_VCC (12V Not generated, but switched
from the 12V arriving from the
SMPS)
AUDIO
STAND-BY VOLTAGES
• 3.3V_ST (Voltage direct from SMPS)
GENERAL
• 5V_Normal (From 12V from SMPS)
• 5V_EXT
• 5V USB (From 12V from SMPS)
from
the
12V
arriving
from
the
SMPS)
.
AUDIO
• 1.8V (Made from 3.3V_Normal)
• 24V (From Power Supply)
MStar IC100 Video Processors
TUNER and VSB CIRCUIT
• 5V_TU (Made from 5V_Normal)
• 3.3V_TU (Made from 3.3V_Normal)
•
1.26V (Made from the 3.3V TU)
• 1.2V, D1.5V, D1.8V_DDR,
1.26V_VDDP, 3.3V_VDDP,
+3.3V_AVDD_MPLL
•
T
-
CON IC9001
1.26V
(Made
from
the
3.3V
_
TU)
• +1.2V_PVSB (Made from 3.3V_TU)
• +3.3V_PVSB (Made from 3.3V_TU)
WIRELESS VOLTAGES
•
24V (Switched from 24V from SMPS)
November LCD TV 32LD350
48
•
T
-
CON
IC9001
• 3.3V_VCC, -5V_VGL, 27V_VGH,
16V_VDD and HVDD (7.8V)
24V
(Switched
from
24V
from
SMPS)