LG EAY64548901, 32LK610BPUA Schematic

LG

2018 UHD 720p LCD TV Training Materials

32LK610BPUA WebOS

4.0

FHD TV

POWER SUPPLY TESTING

Using a Simple 3V Jig or

Smart TV Test Jig and Multi-Gender Board

Published October 09th, 2018

Power Supply (SMPS) Board Layout (EAY64548901)

To Backlights

P801

32LK610BPUA (2018) Power Supply Testing

To Main

Board P2300

P201

October 2018

SK100

AC In

Page 01

LG

32LK610BPUA SMPS (Power Supply) Drawing

32LK610BPUA (2018) Power Supply Testing

P801 To Panel Backlight Power pin 7.

P801 Pin 1 goes to Backlight Driver

Q801 (Back of SMPS)

LED- (95.8V) 50%

LED+ (118.5V) 50%

P801 "SMPS Board" To "LED Backlights"

PIN LABEL RUN Diode

1

3

5

7

LED-

N/C

N/C

LED+

110.4V~89V

n/c

n/c

134.8V~113.2V

OL

n/c

n/c

OL

CY101

In Out Dim to Bright

AC 1st applied 168V (30sec) then fall to 76V
During Stand-By LED+ will fluctuate 76V
Main Board Disconnected: 69V
Backlight Setting Dim 0% to Bright 100%

LF101

CX101

Pins 2-6 are not connection.
Direct Lit Backlights (8 LEDs on 1 Array Strip)

SMPS TEST: Forcing SMPS On.

This test requires simple 3V jig.
See below or Multi-Gender Board, use Port P16
(12pin), See Article 9627.

Using 3V Simple Jig: Remove AC Power.
Disconnect P2300 on Main Board.
Test 1: Using a 3V jig, Jump 3V to pin 1 (PWR_ON).
Apply AC Power. (No Backlights in Test 1)
(Pins 4-8) rises to 13.13V. Backlight Power LED+

114.8V. LED- 95.6V. PDIM will be 3.42V.
Remove AC Power.

Test 2: Using a 3V jig, Jump 3V to pin 11 (DRV_ON).
Place a 12V Light Bulb on 13.2V to Gnd.
Apply AC Power. All Voltages should be produced.
(13.2V) 12.95V to Main and
“LED+” 119.2V to the Backlights), “LED-“ 94.3V.
This will also force the Backlights to come on. PDIM will be 3.77V

Note:

from the Jig.

Special Note:

the 3V Simple Jig).

Test 2

2 AA (3V)

Test 1

Test Set Up

P201

11 12

10

3

12

P201 still inserted. P2300 removed.

Use P2300 side to insert needles

1157

Solder

6

Note: STBY 7.83V (Pins 4-8)

Must be present when AC is

applied before beginning test which

Solder

indicates Standby voltage is OK.

The 13.2V Line “Must” be loaded

using a 12V light Bulb when using

1

H

T

CY102

1

0

To Backlight LEDs

78V (116V) (91V)

CY104

CY103

LF102

CX102

VA100

F100

5A / 250V

SK100

AC

SMPS

P/N: EAY64548901

P204
P203
P202

LED-LED+

P801

168V (159V)69V

D103

69V

69V

168V (159V)

69V

D101

LB112

D104

D102

-

168V (159V)

PRIMARY

CY111

C601

460V

120uF

R113

+

LB110

D802

78V

(116V)

C107

C108

(0V)

Can’t Read

Q101

C806

C205

171V (288V)

R112

168V

(159V)

L801

P802

Hot Gnd
(Shock Hazard)

VOLTAGE LABEL

MODEL LGP32D-17F1

INPUT

OUTPUT

3V SIMPLE JIG: Made from 2 (AA) batteries.

On the other side, solder two red wires (needle tipped) to

the + and one black wire (needle tipped) to the – side.

Note: For Ground you can use Panel Back.

AC100V~240Vac 50/60Hz. 1.5A

13.2V = 1.8A

31V – 660mA

Jump + to – on one side.

See Article 8979

P802

IC801

Gnd

R816

SECONDARY

T101

C106

C105 CY111

7.83V (13.20V)

7.83V (13.20V)

7.83V (13.20V)

60.42V (90V)

P201

0V

(0.15V)

C203

C201

P204

Chassis Gnd

LB113

Note: The Smart Test Jig and Multi-Gender Board “Can” be
used in this model for testing. Use Port P16. 13.2V Line
does not have to be loaded in this case,
Jig Switch set to 24V / LCD Power (See Article 9627).

P201 "SMPS Board" To P2300 "MAIN Board"

PIN LABEL RUN DiodeSTBY

P203P202

(3)

(2)

9-10

4-8

(1)

P-DIM

12 0V

MS (Drv_On)

11

Gnd

13.2V

1

Gnd

N/C

PWR_ON

3

2

Voltages below for Backlight Power (LED+) are with Main
disconnected and using Simple 3V Jig to supply turn-on

*0.16V-3.18V

0V

Gnd Gnd

7.83V

Gnd

n/c

0V

1.97V

13.10V

Gnd

3.35V

*Dim to Bright

n/c

commands on-at-a-time.
(Special Note: 13.2V Line “Must” be loaded using a 12V
light Bulb when using the 3V Simple Jig).

(1)

PWR-On Pin 1: Turns on 13.2V to the Main. No

backlights at this time. Backlight Power is 114.6V.

(2)

MS (DRV_On) Pin 11: Turns on the Backlights.

Backlight power goes to 119.3V.

Voltages given below for PDIM are with Main connected
and receiving normal Digital Antenna Signal.

(3)

PDIM Pin 12: Will vary according to incoming video IRE

level and OSD Backlight setting Output from the Video
Processor. And the Backlight settings in the Customer’s
Menu 0% TO 100%. It is then routed out P1001 to P201
and sent to the LED Driver IC on the Back of the SMPS.
The Range is: Dim 0.17V ~ Bright 3.28V. (1.76V at 50%)
PDIM is actually a 3.44V p/p pulse (PWM Control).

Pin

IC801

Run

4)

0.86V

3)

13.1V

2)

n/c

1)

89V

Pin

5)

6)

7)

8)

Run

3.19V
Gnd

1.95V
Gnd

OL

OL

Gnd

OL

Gnd

n/c

1.20V

MAIN

12

11

9-10

8-4

3

2

1

October 2018

Page 02

LG