DOWNLOAD LG 22LV255C-UA (CHASSIS:LA0AA) Service Manual ↓ Size: 3.13 MB | Pages: 48 in PDF or view online for FREE

Model
22LV255C-UA (CHASSIS:LA0AA)
Pages
48
Size
3.13 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
22lv255c-ua-chassis-la0aa.pdf
Date
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LG 22LV255C-UA (CHASSIS:LA0AA) Service Manual ▷ View online

9. Digital TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703  2 pin : 1.2V
Check IF_P/N Signal
TU3702  17/18 Pin
Replace IC3703 
Check Tuner 5V Power
L3702
ok
ok
ok
ok
No
No
No
No
Bad Tuner. Replace Tuner.
Check IC7952, IC7861
Replace IC7952, IC7861
No
Replace L3702
ok
10. Analog TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703 2 pin : 1.2V
Check CVBS Signal
TU3702 11 Pin
Replace IC3703 .
Check Tuner 5V Power
L3702
ok
ok
ok
ok
No
No
No
No
Bad Tuner. Replace Tuner.
No
Replace L3702
ok
Check IC7952, IC7861
Replace IC7952, IC7861
12. Component Audio
Check Component Cable
for damage or 
open conductor.
Check JK1603 
& Signal Line
ok
ok
No
Replace Jack
11. AV Audio
Check AV Cable for damage
for damage or 
open conductor
Check JK1604 & Signal Line
ok
ok
No
Replace Jack
Follow procedure 
‘8. All source audio’
trouble shooting guide.
Follow procedure 
‘8. All source audio’
trouble shooting guide.
13. RGB Audio
Check Cable conductors
for damage or 
open conductor
Check JK1104 & Signal Line
ok
No
ok
Replace Jack
Follow procedure 
‘8. All source audio’
trouble shooting guide.
DDR3 256M(1Gb) 
667Mhz(1333) Hynix
H5TQ1G63DFR
RGB PC
SPDIF
Component
H/P OUT
HDMI(DVI)
Half 
Half 
NIM
NIM
(CAN)
(CAN)
PC/DVI Audi In
RS-232C
IF +/-
TU_CVBS
SIF
L/R
S7(S7M)
MAX3232
SERIAL FLASH (8M bit)
MX25L8006EM2I
X-tal
32.77K
LVDS
(FHD/HD, 60Hz)
A. AMP
NTP7100
USB2.0
DP/DM
SPK L/R
X-tal
24M
I2S
SPDIF
H/P L/R
L/R
CVBS, Y/Pb/Pr, L/R
RGB/H/V
RS232C
Rear
TMDS
DDR3 Add.
DDR3 Data
SPI
MICOM
UPD78F0514AGA
-GAM-AX
MICOM SDA
MICOM SCL
AV
Side
NAND  Flash
(1Gbit)
H27U1G8F2BTR-BC
PCM_A[0:7]
FFC (30P)
TMDS
HDMI
CVBS, L/R
CONTROL
IR & LED /
SOFT TOUCH
NEC_EEPROM
_SCL/SDA
LED_R/BUZZ
KEY1
KEY2
IR
LED_B/LG LOGO
SOFT TOUCH
_SCL/SDA
※ GP2 대비 변경부품 : 보라색 font
AT24C1024BN-SH-T
1Mbit
HDCP EEPROM
CAT24C08WI
I2C
MICOM  EEPROM
AT24C16BN-SH-T
16Kbit
RGB EEPROM
AT24C16BN-SH-T
I2C
I2C
HDMI EEPROM
AT24C02BN-SH-T
I2C
DDR3 256M(1Gb) 
667Mhz(1333) Hynix
H5TQ1G63DFR
DDR3 256M(1Gb) 
667Mhz(1333) Hynix
H5TQ1G63DFR
HDMI EEPROM
AT24C02BN-SH-T
HDMI EEPROM
AT24C02BN-SH-T
LED D/L pin
SCL/SDA
FFC(51P)
FFC(41P)
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