Schematics; Interconnect Diagram - LG 32LG40 Training Manual

Schematics

P203 "SMPS" to P209 "Ballast PWB"
Pin Label STBY
1 24V
2 24V
3 24V
4 24V
5 24V
6 Gnd
7 Gnd
8 Gnd
9 Gnd
10 Gnd
11 BR1
12 INV On-Off
13 PWM-DIM
14 ERROR
MCN1
24V
F1
LD1
8A / 150V
Ballast
Drive LED
Ballast
DVD Drive
To Backlight
Left Side
To Backlight
Right Side
Front PWB
IC201
Assembly
PIN FUNCTION
2
(Interface)
3 On/Off Control BCM DDR Power
7
J2 J1
8
IC304
IR Receiver
PIN FUNCTION
Power Button 3,8
5,6,7
4 On/Off Control
IC400 RESET GENERATOR TO IC401 (On Back)
PIN FUNCTION
1
2
3
P101
PDP Training - Fall 2008
32LG40 INTERCONNECT DIAGRAM
TO TFT MODULE
CN2
Run Diode Check
T-CON Board
0V 24.52V 0.33V
0V 24.52V 0.33V
0V 24.52V 0.33V
0V 24.52V 0.33V
0V 24.52V 0.33V
Gnd Gnd Gnd
12V
Gnd Gnd Gnd
F1
Gnd Gnd Gnd 6.3V/1.5A
Gnd Gnd Gnd
Far left and right pins are not
Gnd Gnd Gnd
counted, they are ground.
0V
1.67V OL
0V
3.45V OL
0V 3.40V OL
0V
0V OL P203
P202
Not Used
CN403
CN402
CN401
5A / 250V
A/C Fuse
F100
CN400
L
A/C In
SC100
N
USB Power IC405
RESET GENERATOR FOR Q400
NAME STBY RUN PIN NAME STBY RUN
FUNCTION
IN +5V 0V 5V 1 IN 3.3V_MICON 3.41V 3.41V
0V 3.4V 2 Gnd Gnd Gnd Gnd
OUT USB_PWR_Out_1 0V 5V 3 OUT Reset (Lo-Hi) 0.6V 0.6V
OUT +3.3V 0V 3.1V IC802
+3.3V Regulator (3.3V TMDS_SW)
2.6V BCM PIN FUNCTION NAME STBY RUN
NAME STBY RUN 1 Gnd +3.3V 0V 5V
OUT DDRO_VTT 0V 1.29V 2 OUT Gnd Gnd Gnd
IN D2.6V_BCM 0V 2.6V 3 IN +5V_SUB 0V 3.2V
DDRO_VTT 0V 1.29V IC803
+9V Regulator
PIN FUNCTION NAME STBY RUN
NAME STBY RUN 1 IN +12V 0V 12V
IN D3.3V_BCM 0V 3.4V 2 Gnd Gnd Gnd Gnd
Gnd Gnd Gnd Gnd 3 OUT +9V 0V 9V
OUT Reset (Lo-Hi) 0V 3.39V
11,18,19,20
P201 Odd "SMPS" to P800 "Main PWB"
Pin Label STBY Run Diode Check
1 16.5V 0V 16V
3 Gnd Gnd Gnd
CN3
5 12V 0V 11.8V
7 Gnd Gnd Gnd
9 5.2V 5.15V 5.15V
11 5.2V 5.15V 5.15V
US2
13 Gnd Gnd Gnd
3) 0.0V
15 Gnd Gnd Gnd
2) 1.8V
1) 3.3V 17 ERR 0V 3.3V
19 PWR 0V 2.86V
CN1
21 BR1 0.1V 1.68V
23 N/C 0V 3.2V
To Force Power Supply On.
Disconnect P800 on Main PWB.
Jump 5V to pin 19.
Ballast and All voltages should turn on.
P201
P800
Power Supply
P901
3.15A / 250V
380 Fuse
P900
F101
P904
P401
IC806 D3.3V/A3.3V_BCM Regulator turns on LD800 Q801 5V SUB SWITCH
PIN FUNCTION NAME STBY RUN PIN FUNCTION NAME
1 On/Off Control Power_CTL_3.3V 0V 3.4V 1,3 IN ST_5V
2 IN +5V_SUB 0.36V 5V 2,4 On/Off Control Q802
3 Gnd Gnd Gnd Gnd 5,6,7,8 OUT +5V_SUB
4 OUT D3.3V_BCM 0.1V 3.4V Q802
5V SUB SWITCH CONTROLLER for Q801
IC807 D3.3V_BCM Regulator (Also A3.3V_BCM) PIN FUNCTION NAME
PIN FUNCTION NAME STBY RUN B On/Off Control RL_ON
1 IN +9V 0V 8.9V C Pull Down ST_5V
2 On/Off Control Power_CTL_3.3V 0V 3.4V E Gnd Gnd
3 OUT +5V 0V 5V
Q400 RESET GENERATOR FOR MICRO IC407
4 n/c n/c n/c n/c PIN FUNCTION NAME
5 Gnd Gnd Gnd Gnd B Reset Reset
C Vcc 3.3VVST_MICON
IC809 D2.6V_BCM Regulator (Also A2.6V_BCM)
PIN FUNCTION NAME STBY RUN E Gnd Gnd
6,7,8,10 IN +5V_SUB 0.36V 4.98V
17 On/Off Control Power_CTL_2.6V 0V 3.41V
1,2,3,4,5 OUT D2.6V_BCM 0V 2.66V
REGULATORS/ICs ON FRONT
14,15 n/c n/c n/c n/c
Gnd Gnd Gnd Gnd
67
32LG40 :: Interconnect
P201 Even "SMPS" to P800 "Main PWB"
Pin Label STBY Run Diode Check
0.31V 2 16.5V 0V 16V 0.31V
Gnd 4 Gnd Gnd Gnd Gnd
1.69V 6 12V 0V 11.8V 1.69V
Gnd 8 Gnd Gnd Gnd 0V
0.34V 10 5.2V 5.15V 5.15V 0.34V
0.34V 12 5.2V 5.15V 5.15V 0.34V
Gnd 14 Gnd Gnd Gnd Gnd
Gnd 16 Gnd Gnd Gnd Gnd
1.26V 18 ACD 5.05V 4.57V OL
OL 20 INV-On/Off 0V 3.29V OL
OL 22 PWM-DIM 0V 3.38V OL
OL 24 N/C 0V 0V OL
P902 Pin 11
Q901
IC809
Q900
P902
Main (Digital) Board
Reset
IC401
BSM
IC400
X400
IC00
24 Mhz
Q400
BCM
X200
IC405
IC805
IC801
54 Meg
TUNER
LD800 IC802
IC801
IC806
*
Grayed Out ICs are
located on Back
P500 To Speakers
BCM RESET
IC401 IC808
PIN FUNCTION NAME STBY RUN PIN FUNCTION
STBY RUN
14 IN D3.3V_BCM 0V 3.41V 2
0V 5V
1 On/Off Control Reset from IC400 0V 3.4V 3
0V 0.28V
0V 5V 6 OUT BCM_RESET 0V 3.4V 4
IC801 +1.8V_NTP REGULATOR Q900
STBY RUN PIN FUNCTION NAME STBY RUN PIN FUNCTION
0V 3.29V
1 Gnd Gnd Gnd Gnd B
0V 5V
2 OUT +1.8V_NTP 0V 1.8V C Pull Down 12V
Gnd Gnd
3 IN 3.3V_TMDS_SW 0.26V 3.29V E
IC805 D1.2V/A1.2V BCM REGULATOR Q901
STBY RUN
PIN FUNCTION NAME STBY RUN PIN FUNCTION
0.6V 0.6V
6,7,8,10 IN +5V_SUB 0.38V 5V 1,3
0V 0V
17 On/Off Control Power_CTL_1.2V 0V 3.41V 2,4 On/Off Control
Gnd Gnd
1,2,3,4,5 OUT D1.2V_BCM 0V 1.29V 5,6,7,8
13, 14,15,16 n/c n/c 0V 0V
11,12,18,
Gnd Gnd Gnd Gnd
19,20
Screen Print for Pin No is incorrect, use IC
3
2
L
G
4
Example
Of LVDS
Signal
0
Software
P200
Upgrades
IC807
IC803
ST-BY 3.3V DC-DC CONVERTER
NAME STBY RUN
IN ST_5V 5V 5V
OUT 3.3VST_MICON 3.43V 3.43V
Gnd Gnd Gnd Gnd
LVDS 12V SWITCH CONTROLLER Q901
NAME STBY RUN
Control LVDS_PANEL_CTRL 0V 0.75V
LVDS Switch Control 0V 0V
Gnd Gnd 0V 0V
LVDS 12V SWITCH
NAME STBY RUN
IN 12V 0V 12.36V
Q900 0V 6.16V
OUT LVDS 12V 0V 12.36V
REGULATORS/ICs ON BACK
67
Schematics