LG 22LD350 (CHASSIS:LT01A) Service Manual ▷ View online
10. Analog TV Audio
Check RF Cable & Signal
Follow procedure
‘8. All source audio’
trouble shooting guide.
ok
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
ok
ok
ok
ok
No
No
No
No
Replace IC401
No
Bad Tuner. Replace Tuner.
Replace L5002
ok
12. Component Audio
Check Component Cable
for damage or open conductor.
Check JK3801 & Signal Line
ok
ok
No
Replace Jack
11. AV Audio
Check AV Cable for damage
for damage or open conductor
Check JK3801 , JK3302
& 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 JK1102 & Signal Line
ok
No
ok
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
14. EARPHONE Audio
Check AV Cable for damage
for damage or open conductor
Check JK3301
& Signal Line
ok
ok
No
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
LD350 Block Diagram
LD350 Block Diagram
USB
NANDl Flash
(2Gbit)
HY27UF082G2B-TPCB
IC102
Digital AMP
(TAS5713)
IC5301
MX25L8005M2I
8Mbit IC1401
HDMI1
(JK802)
TMDS_[0:7]
HD 60Hz Panel
PCM_A[0:7]
LPF
DDR3 SDRAM
H5TQ1G63BFR
(256MBit)
IC1201/1202
SPI
MICOM
UPD78F0513AGA
-GAM-AX
IC1002
MICOM_SCL/SDA
MAX3232CDR
IC1101
RX
TX
MICOM EEPROM
M24C16-WMN6T
16Kbit
IC1001
S7
IC101
LGE101
RS232
(P1101)
MIC2009YM6-TR
IC2301
USB Power 500mA
M24M01-HRMN6TP
1Mbit IC104
DDC_SCL/SDA
DDR3 Data[0:15]
DDR3 Address[0:13]
HDMI EEPROM
AT24C02BN-10SU
IC801
AMP_SCL/SDA
PWM
CONTROL
IR & LED
P2401
NEC_EEPROM
_SCL/SDA
MICOM
IC1002
IC1002
LED_R/BUZZ
KEY1
KEY2
IR
TMDS_SCL/SDA
(Only Service)
JK1103 AUDIO OUT [SPDIF]
JK3301 AUDIO OUT [SIDE_HEADPHONE]
RGB PC In
(P1102)
PC EDID EEPROM
AT24C02BN-10SU
IC1105
TX
RX
RGB
DDC_SCL1/SDA1
RGB_DDC_SCL/SDA
COMPONENT In, AVI In
SIDE_AV2 In
JK3302
COMP, CVBS1
I2C_SCL/SDA
LVDS
P705
P705
AUDIO
COMP L/R, CVBS1 L/R
COMP L/R, CVBS1 L/R
CVBS2
AUDIO CVBS2 L/R
LED_B/LG LOGO
IR_OUT
IR_PASS
(JK1102)
AUDIO
RGB PC In L/R
RGB PC In L/R
SPDIF_OUT
HP_L/ROUT
I2S
P5301
(4pin)
2 SPK
SIDE_USB_DP/DM
(JK3801/2)
NEC_EEPROM
_SCL/SDA
HDCP EEPROM
CAT24WC08W-T
IC103
CEC_REMOTE
SPDIF CMOS
NL17SZ00DFT2G
IC1104
TUNER
HNIM/FNIM
(TU2701)
ATV/DTV
TUNER
(HNIM)
Cable
(DVB-T)
TU_CVBS
SCL1/SDA1
IF_AGC_MAIN
IF_N/P
TU_SIF
SIDE_HDMI2
(JK803)
DDC_SCL/SDA
HDMI EEPROM
AT24C02BN-10SU
IC804
TMDS_SCL/SDA
TMDS_[0:7]
30PIN LVDS FOR HD 60Hz
12V_Panel
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