DOWNLOAD LG 22LE5300 (CHASSIS:LL01A) Service Manual ↓ Size: 8.46 MB | Pages: 71 in PDF or view online for FREE

THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.

CHB_CVBS_IN

/PIF_SPI_CS

R6001

0

NON CHB

Ver. 1.0

GP2_Saturn7M

68

Check stand-by Voltage.

P403 or P404 9~12pin : +3.5V_ST

Check Power connector

Main B/D 3.5V Line

Short Check

Check X1002 clock

32 KHz

Replace X1002

Check P403 or P404 PWR_ON.

1pin : 3.3V

Replace Micom(IC1002) or Main board

Check Multi Voltage

P403 2 pin : 20V, 17 pin : 12V

P404 2 pin : *20V, 17 pin : 12V

Replace Power Board

Check Inverter Control & Error Out

P403 or P404 18 pin : High

P403 or P404 24 pin : Low

Check Power Board or Module

Check IC402/3/5/7 Output Voltage

IC402 : 2.5V

IC403 : 1.26V

IC405 : 3.3V
IC407 : 1.5V

Replace IC402/ 3 / 5 / 7

Re-download Micom software.

Check Micom Voltage
IC1002 pin 48 : +3.5V

Replace L404

*20V Voltage is dependent on Model
26LD350 => 24V

Check LVDS Power Voltage

Q409 : 12V

Replace Q409

Check Mstar LVDS Output

Replace Mstar(IC101) or Main Board

Change Module

Check X201 Clock

24 MHz

Replace X201

Replace Power board.

-. P403 : 37inch / 42inch Model
-. P404 : 26inch / 32inch Model

Check RF Cable & Signal

Check Tuner 3.3V Power

L5003

Replace L5003

Check Tuner 1.2V Power 

IC5001 2 pin : 1.2V

Check CVBS Signal

TU5001 11 Pin

Replace IC5001.

Check Tuner 5V Power

L5002

Check IC401

Check Mstar LVDS Output

Replace Mstar(IC101) or Main Board.

Replace IC401

Bad Tuner. Replace Tuner.

Replace L5002