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

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4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
Check JK9800 (*JK3302)
CVBS Signal Line
R137 (*R114)
Check CVBS_DET Signal
Replace R9802 or R9803
ok
ok
ok
No
No
Replace Jack
* JK3302 is Side AV supported model
26/32LD350 models
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
(R121/120/122)
Check COMP_DET Signal
Replace R9800,R9801
ok
ok
ok
No
No
Replace Jack
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID & EEPROM
IC1105 I2C Signal
R1141, R1143(SDA,SCL)
Check JK1104
H/V_Sync/R/G/B Signal Line
(R146/149/127/128/129)
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
Check DSUB_DET
Replace R1146 or R1147
ok
No
Replace Jack
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID & EEPROM
IC7701 (*IC7702)
I2C Signal
Check JK7700, JK7702
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
Check HDCP Key NVRAM(IC105)
Power & I2C Signal
Replace the defective IC.
ok
No
Replace Jack
* JK7702 is Side HDMI supported model
26/32LD350 models
Check HDMI Signal
Check other set
If no problem, check signal line
ok
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
Replace Main Board
No
Check HDMI_DET(HPD)
No
ok
Replace R7703,R7705,R7731,R7732
8. All Source Audio
Check the TV Speaker Menu
(Menu -> Sound -> TV Speaker)
On
ok
ok
Check Output Signal P600
1, 2, 3, 4 pin.
Replace Audio AMP IC(NTP-3100L)
IC600.
ok
No
Check Connector & P600
Replace connector
if found to be damaged.
ok
No
Check speaker resistance
and connector damage.
Replace speaker.
ok
No
Off
Toggle the Menu
Check AMP IC(IC600) Power
*20V, 3.3V, 1.8V.
No
Check Regulator IC601
*20V Voltage is dependent on Model
26/32LD350 => 24V
19/22LD350 => 15V
Check Mstar I2S Output
R604, R605, R606
No
Check signal line. Or replace Mstar(IC100)
Check Mstar AUDIO_MASTER_CLK
R603
No
Replace Mstar(IC100) or Main Board.
ok
Check AMP I2C Line
R607, R608
No
Check signal line. Or replace Mstar(IC100)
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