T-Con (Tft Drive) With (Shield Removed) Components Identified - LG 55LW5600 Troubleshooting Manual

55LW5600 T-CON (TFT Drive) with (Shield Removed) Components Identified
Warning: T-Con Board under shield. Be sure to reinsert screws before operating set with shield removed.
12V
HVDD 8.21V
L3
L1
D5
Gnd
US1 US1
VDD 16.4V
Pin 18
Q12
(25.75V)
1
2 2
(16.18V) D1
3
D7
1) 29.26.4V
D2
2) 27.75V
(15.87V)
3) 29.86V
(29.86V)
VGH 27.74V
CN4
FL1
27.74V
Pin 51, 52 VGH Pin 35, 36 VCC
-5.3V
Pin 40, 41 VDD
Pin 47, 48 VGL
8.21V
Pin 38, 39 HVDD
LVDS
Gnd
CN2
(3.35V)
L2
Gnd
(3.3V)
D6
VCC 3.3V
Gnd
Q11
D3
-5.3V
3
-2.43V
2 2
1
3) Gnd
3.38V
2) 2.6V
D4
1) 0.59V
VGL -5V
(3.3V)
3.3V
16.4V
Other Voltages from U6 to the Panel with no silk screen labels:
U6 pin 10: (16.12V) to CN4 pin 2, CN5 pin 59
U6 pin 11: (13.3V) to CN4 pin 3, CN5 pin 58
U6 pin 12: (12.2V) to CN4 pin 4, CN5 pin 57
U6 pin 13: (10.26V) to CN4 pin 5, CN5 pin 56
TO MAIN
12V
Gnd
Gnd
F1 3A/125V
UC1
TO TFT MODULE
Pin 22, 23 HVDD
U6 pin 14: (5.9V) to CN4 pin 8, CN5 pin 53
U6 pin 15: (4.05V) to CN4 pin 9, CN5 pin 52
U6 pin 18: (3.01V) to CN4 pin 10, CN5 pin 51
U6 pin 19: (2.36V) to CN4 pin 11, CN5 pin 50
83
To run the T-CON "Panel Test", remove
LVDS
the LVDS cables. Jump 12V to the 12V
fuse. Jump VCC 3.3V to pin 44 on CN1.
White, Red, Blue, Green and Black
patterns show on screen.
CN3 n/c
Gnd
CN1
U5
Panel
U5
Test
5) 3.3V 4) Gnd
TP 44
6) 3.3V 3) Gnd
7) 3.15V 2) Gnd
8) 3.3V 1) Gnd
U6
P-VDD
16.37V
From VDD Pins 7-8
(3.3V)
CN5
27.74V
Pin 9, 10 VGH Pin 25, 26 VCC
-5V
Pin 13, 14 VGL Pin 20, 21 VDD
8.21V
July 2011 LCD-DV
PANEL TEST
FL2
10
3.3V
16.4V
55LW5600