LG 32LH30 Diagram

P203 "SMPS" to CN1 "Ballast"

LED1

24V LED

Ballast

48Khz input

Pin 1 Pin 6

22V p/p 34V p/p

1616

T1

1.2KV

To Backlight

Left Side

P101 o J3 Front PWB

Label

1

Key1

3.3V

Gnd

Key2

Gnd

On then Off
after ballast

fires

CN1

T2

1.2KV
To Backlight

Right Side

Run STBYPin

3.3V
GndGnd2

3.3V3.3V3
GndGnd4

Diode

Check

Open

Gnd

Open

Gnd

Diode CheckRun STBYLabelPin

Diode CheckRun STBYLabelPin

0.729V24.52V0VVBL1

0.729V24.52V0VVBL1

0.729V24.52V0VVBL2

0.729V24.52V0VVBL2

0.729V24.52V0VVBL3

0.729V24.52V0VVBL3

0.729V24.52V0VVBL4

0.729V24.52V0VVBL4

0.729V24.52V0VVBL5

0.729V24.52V0VVBL5
GndGndGndGnd6

GndGndGndGnd6
GndGndGndGnd7

GndGndGndGnd7
GndGndGndGnd8

GndGndGndGnd8
GndGndGndGnd9

GndGndGndGnd9
GndGndGndGnd10

GndGndGndGnd10

Open1.67V0VBVR_A11

Open1.67V0VVBR_A11
Open3.45V0VOn/Off12

Open3.45V0VOn/Off12
Open3.40V0VVBR_B13

Open3.40V0VVBR_B13
Open0V0VError14

Open0V0VError14

Do not run

Ballast without

heat sink

attached

Side (Key) Controls

P101

Main
Power
Switch

32LH30 INTERCONNECT DIAGRAM

US2

1 (0V)
2 (1.8V)
3 (3.3V)

SMPS TEST 1: To Force Power Supply On.
Disconnect P800 on Main PWB.
Jump pin 7,8,9 or 10 (5V) to pin 2 using a 10K
resistor. (Test Voltage Outputs 12V, and 24V).

SMPS TEST 2: Jump pin 2 to pin 20 (INV-ON).
(Ballast and all voltages should turn on).

P203

D252

SK101

6.3A / 250V
A/C Fuse

F100

L

N

SK100

Front PWB

Assembly

J3

(Interface)

IR Receiver

Power Button

D251

Q102
Q101

D255

D201

LOC

D201, D251,

D252, D255

D602

Q602

3.15A / 250V Rating

335V Actual Reading

F501

4A

A/C Rectifier

Power Supply

J1

T-Con PWB under shield. Be sure to reinsert

Warning:

screws before operating set with shield removed.

TO TFT MODULE

CN4

3.3V Fuses
FL3

1.5V Fuses
FL2

UC1

FL4

FL1

F1 (12V)

CN1

63V/1.5A

12V to T-CON

Pin 48 ~ 51

P201

P201 Even“SMPS” to P700 “Main”

Gen PT #

MBRF10100CT

Gnd6

FSU10B60

11

K6A60DQ101, Q102
K13A60D

17,18

D602

-

Q602

~
~

+

Pin 21 BR1 (ADIM Analog Dimming)
Fixed and not used

Pin 24 PDIM (Digital Dimming) can vary according
to type of signal being processed and the
OSD Backlight setting.

0.6V 0% to 3.3V 100%.
Output from the Video Processing chip IC100.

TO TFT MODULE

D9

L2

T-CON

L1

CN3

3.3V

D8

16.9V

20 bit LVDS

CN1 CONNECTOR "T-CON” PWB CON PWB

Pin

7
8

PWM-DIM
OPC-OUT

9

10

OPC-EN
12
13
14
15
16
17
19

20
32
23
24

25

P800 “Main” TO CN1 “T-CON”

Q706
1 (5V)
2 (0.48V)
3 (0.48V)
4 (6V)
5-6 (12.3V)
7-8 (5V)

IC600
Audio
56 Pin

1 (Gnd)
2 (Reset) .3V
3 (3.28V)

IC601

IC704

3.3V-FE
1 (0.78V)
2 (Gnd)
3 (5V)
4 (7.4V)
5 (2.12V)
6 (3.28V)
7 (3.28)
8 (5V)

IC107

Power Det

IC702

Reset
IC100

IC702

(3.3V_ST)
1 (5V)
2 (3.3V)
3 (0V)

3.3V_FE

IC107

Q706 Switch
(12V LVDS)
(5V General)

5V (0V)

Q701

PWR On

5V (5V)

0V (0.6V)

P700

To SMPS PWB

IC601

1.8V Amp
1 (3.2V)
2 (1.8V)
3 (0V)

Q702

Inv-On Control

CheckRun STBYLabelPin

Open3.2V0VPDIM24

(0.6V)

3.85V (0V)

Gnd

0V

( ) = Off

ncncncnc23
Open0V0VErr Out22
Open1.66V0VBR121
Open4.67V0VINV.ON20

ncncncnc19

0.73V24.8V0V24V

0.73V24.8V0V24V

GndGndGndGnd

GndGndGndGnd15,1 6

Open12.3V0V12V

Open12.3V0V12V13,14

GndGndGndGnd

GndGndGndGnd11,1 2

BCE

KEY

To

Speakers

To Front Control

P600

Open5.14V5.14V5V7,8,9,10

GndGndGndGnd3,4,5,6

Open4.99V0VPWR-ON2

ncncncnc1

Diode TestRun VSTBYPin ID

1.95V0V0VLVDS-SEL
Open*0V0V

1.75V0V0V

1.75V0V0V

1.1V1.2V0VTXA4+

1.1V1.1V0VTXA4-

1.1V1.2V0VTXA3+

1.1V1.1V0VTXA3-

1.1V1.1V0VTXAC+

1.1V1.2V0VTXAC-

1.1V1.2V0VTXA2+

1.1V1.1V0VTXA2-

1.1V1.2V0VTXA1+

1.1V1.1V0VTXA1-

1.1V1.1V0VTXA0+

1.1V1.2V0VTXA0-

IC705

IC704

L710

1 (N/C)
2 (3.18V)
3 (3.18V)
4-5 (N/C)
6 (1.87V)
7 (0.8V)
8 (Gnd)

IC701

IC701

1.8V_DDR

X100

12 Mhz

1.26V_VDDC

1.26V_VDDC
1 (0.78V)
2 (Gnd)
3 (5V)
4 (5.9V)
5 (5V)
6 (1.3V)
7 (1.3V)
8 (3.16V)

IC705

L726

IC105

HDCP EEPROM
1-2 (Gnd)
3 (5V)
5-6 (0V)
4-7 (Gnd)
6 (1.2V)
7 (0.8V)
8 (5V)

Also, Main Micro

IC100
Video

Processor

Mstar

MAIN (Digital) Board

IC500 IC501

IC1200

R,G,B PC/

DDC

Grayed Out ICs are

*

located on Back

P1204 CONNECTOR "MAIN PWB" to

POWER On/Off

P1204

IC500 / IC501

HDMI EDID

Pins 1, 11, 18, 21, 26, 34, 37, 42~46 are all Ground
Pins 1~6 and 47 Are not used

Pin

Diode TestRun VSTBYPin ID

3.24V0VBIT-SEL27
29
30
31

1.2V0VTXB4-

1.2V0VTXB3+

1.1V0VTXB3-

1.1V0VTXBC+32

1.2V0VTXBC-33

1.1V0VTXB2+35

1.2V0VTXB2-36

1.1V0VTXB1+38

1.2V0VTXB1-39
40
41

0VLVDS 12V48
0VLVDS 12V49
0VLVDS 12V50

0VLVDS 12V51

1.1V0VTXB0+

1.2V0VTXB0-

3.18V12.1V

3.18V12.1V

3.18V12.1V

3.18V12.1V

Note: CN1 Pin 1 is P800 Pin 51

IC105

To T-CON

IC101

Flash Memory
1-2 (0V)
3-4 (0V)
5-6 (0V)
7-8 (3.2V)

(LVDS)

P800

X1005

25 Mhz

19 Video

16 SIF
15 (5V)

13 DIF ­12 DIF +

4 (5V)

1

IC1004

8vsb/
QAM

TUNER

IC1003

IC1002

5V-Tuner
1 (8.94V)
2 (2.37V)
3 (5V)
4 (N/C)
5 (Gnd)

LD1000

IC1003

5V-Tuner

source
1 (12V)
2 (Gnd)
3 (8.94V)

IC1000

1.2V_PVSB
1 (N/C)
2 (3.2)
3 (3.2V)
4-5 (N/C)
6 (1.2V)
7 (0.8V)
8 (Gnd)

J1 "Front IR / LED PWB

Diode CheckRun STBYLabel

Diode CheckRun STBYLabelPin

Open3.3V3.3V

Open3.3V3.3VSCL1

1.67V3.3V3.3V

1.67V3.3V3.3VSDA2
GndGndGnd

GndGndGndGnd3

1.4V3.3V3.3V

1.4V3.3V3.3VKey14

1.1V3.3V3.3V

1.1V3.3V3.3VKey25

1.5V5.1V5.1V

1.5V5.1V5.1V5V ST6
GndGndGnd

GndGndGndGnd7
GndGndGnd

GndGndGndGnd8

Open4.8V4.8V

Open4.8V4.8VIR9

GndGndGnd

GndGndGndGnd10

3.29V

0.76V3.29V

0.76V3.29V3.3V_ST11
Open3.29V0V

Open3.29V0V12

1.1V

1.1V

1.1V

1.1V

1.1V

1.1V

1.1V

1.1V

0.8V

1.1V

0.8V

1.1V

Tuner Data