DOWNLOAD LG 19LE5300 (CHASSIS:LA01A) Service Manual ↓ Size: 3.36 MB | Pages: 55 in PDF or view online for FREE

Model
19LE5300 (CHASSIS:LA01A)
Pages
55
Size
3.36 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
19le5300-chassis-la01a.pdf
Date
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LG 19LE5300 (CHASSIS:LA01A) Service Manual ▷ View online

1. Power-up boot check
Check Adater power.
JK7500 : 24V 
Replace Adapter
Check X1002 clock
32.76 KHz
Replace X1002
Check IC1002 PIN 36(RL_ON).
RL_ON : 3.3V
Replace Micom(IC1002) or Main board
Check Inverter Control & Error Out
P7501 12 pin : High
P7501 14 pin : low
Check  Module
Check IC7502/1/6/7/4 Output Voltage
IC7502 : 12V
IC7501 : 1.26V
IC7506 : 3.3V
IC7507 : 5.0V
IC7504 : 1.5V
Replace IC7502/1/6/7/4
Re-download Micom software.
Check Micom Voltage
IC1002  pin 48 : +3.5V_ST
Replace IC7503
Check LVDS Power Voltage
Q7507 : 12V(26”)/ 5V(22”/29”)
Replace Q409
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board
Change Module
ok
ok
ok
ok
ok
ok
ok
ok
No
No
No
No
No
No
No
No
No
Check X7300 Clock
24 MHz
Replace X7300
ok
No
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
Replace IC5001.
Check Tuner 5V Power
L5002
Check IC401
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC7511
No
Bad Tuner. Replace Tuner.
Replace L5002
ok
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
L5002
Check IC401
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC7511
No
Bad Tuner. Replace Tuner.
Replace L5002
ok
4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
Check JK9800
CVBS Signal Line
R7334
ok
ok
ok
No
Replace Jack
5. Component Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK9800
Y/PB/PR signal Line
ok
ok
ok
No
Replace jack
ok
Check CVBS_DET Signal
Replace jack or R9803
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
No
Check COMP_DET Signal
Replace jack or R9801
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
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