DOWNLOAD LG 22LD350 (CHASSIS:LA04A) Service Manual ↓ Size: 5.59 MB | Pages: 60 in PDF or view online for FREE

Model
22LD350 (CHASSIS:LA04A)
Pages
60
Size
5.59 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
22ld350-chassis-la04a.pdf
Date
PREV: LG 22LD350 / 22LD350C / 22LD350N / 22LD351 / 22LD355 / 22LD358 (CHASSIS:LD01A) Service Manual

LG 22LD350 (CHASSIS:LA04A) Service Manual ▷ View online

1. Power-up boot check
Check stand-by Voltage.
P403 9~12pin : +3.5V_ST
Check Power connector
Check Fuse.
Replace Power board.
Check X100 clock
12MHz
Replace X100.
Check P403 PWR_ON.
1pin : 3.3V
Replace Mstar(IC100) or Main board
Check Multi Voltage
P403 2 pin : 24V , 17 pin : *12V
Replace Power Board
Check Inverter Control & Error Out
P403 18 pin : High
P403 24 pin : low
Check Power Board or Module
Check IC403/5/7 Output Voltage
IC403 : 1.26V
IC405 : 3.3V
IC407 : 1.8V
Check
Enable Signal & VCC IN
IC403,IC405,IC407
Re-download software.
Check Micom Voltage
IC400 pin 3 : +3.3V
Replace IC400
*12V Voltage is dependent on Model
26/32LD350 => 12V
19/22LD350 => 15V
Check LVDS Power Voltage
Q409 : 12V
Replace Q409
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board
Change Module
ok
ok
ok
ok
ok
ok
ok
ok
ok
ok
ok
No
No
No
No
No
No
No
No
No
No
Replace IC403/5/7
OK
2. Digital TV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L5003
Replace L5003
Check Tuner 1.2V Power 
IC5001 2 pin : 1.2V
Check IF_P/N Signal
TU5001 17/18 Pin
Check Demodulator Input
Clock(X1005-25Mhz)
Replace X1005
Check IC1004(LGDT) Output
- AR1070, AR1071
Replace IC5001.
Check Tuner 5V Power
L5004
Check +5V_USB Voltage
IC401
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
ok
ok
ok
ok
ok
ok
No
No
No
No
No
No
No
Replace IC401
No
Bad Tuner. Replace Tuner.
Replace IC1004
Replace L5004
ok
Check IC1004(LGDT) VCC
ok
No
Check VCCIN/OUT
IC1001,IC100
No
Replace IC1001,IC100
3. Analog TV Video
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
L5004
Check IC401
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC401
No
Bad Tuner. Replace Tuner.
Replace L5004
ok
Page of 60
Display

Click on the first or last page to see other 22LD350 (CHASSIS:LA04A) service manuals if exist.

RANDOM: