LG 52LG5FRC-TA (CHASSIS:LP81Z) Service Manual ▷ View online
C
2008
- 17 -
6. HDMI Video
Check signal format
Is it supported?
Y
Check JK301, JK302
Replace connector
Y
N
Y
Check HDMI Cable
Check EDID NVRAM (IC300, IC301)
Power(#8) & I2C Signal (#5, #6)
Replace it or re-download
Y
N
Check IC302 #49 Pin
Voltage Level 5V
Replace it
Y
N
Check L1105 Voltage Level 5V
Replace it
Y
N
Check IC302 DDC I2C
#29, #30
Replace it
Y
N
Maybe LGE6991DD(IC801)
has problems
C
2008
- 18 -
7. All Source Audio
Make sure you cant hear any audio
Check Signal
L610, L611, L612, L613
Check IC600 Power
L1106(16V), C605(3,3V), L614, L615(1.8V)
Replace it
Y
N
Replace it
N
Check Connector
P601
Y
Y
Replace connector
N
Check speaker
Y
Replace speaker
N
Maybe NTP3000A (IC600) has problems.
Replace it
Y
8. Analog TV Audio
Check video output
Follow procedure All source audio trouble
shooting
Y
Follow procedure analog TV video trouble
shooting
N
N
Check L1106 voltage level 16V
Replace it
N
Y
Check SIF signal
R545
Replace it
N
Y
Maybe NTP3000A (IC600) has problems.
Replace it
C
2008
- 19 -
9. Component/ RGB/ AV Audio
Check video output
Y
Follow procedure external
input video trouble shooting
N
Check Connector
JK100 (Component)
JK102 (RGB)
JK200 / JK204 (AV Rear, AV Side)
& cable
Replace connector
N
Y
Check signal
R134, R136 (Component)
R143, R144 (RGB)
R218, R220 (AV Rear)
R247, R249 (AV Side)
Replace it
N
Y
Maybe NTP3000A (IC600) has problems.
Replace it
10. HDMI Audio
Check video output
Follow procedure All source audio trouble
shooting
Y
Follow procedure HDMI video trouble
shooting
N
N
Check EDID NVRAM (IC300, IC301)
Power & I2C Signal (#5, #6, #8)
Replace it or re-download
Y
N
Maybe NTP3000A (IC600) has problems.
Replace it
C
2008
- 20 -
PC_Audio
RF
RGB
(PC Only)
HDMI1, 2, 3
(DTV Only)
AV1
Ext_Speaker_OUT
Mono 3W/8ohm
Side AV2
COMP1
SWITCH
DUAL FET
LVDS_PWR_12V/RL_ON
+12V
RS-232C
MX25L8005
SF-ROM(2M)
SPI_CZ/CLK
SPI_D
TMDS/DDC/HPD_SINK
HDMI_SEL/HDMI_IIC
HDMI
S/W
HDMI 1,2,3 TMDS/DDC/HPD_S/W
LCD
(LVDS)
TXCO[0:4] / TXCE[0:4] / TXCLKO / TXCLKE
NTP3000
Digital AMP
RGB/HVS/IIC_DSUB
CVBS_VIN
TV_MAIN/MAIN_SIF
SIF
AM_AUDIO
IIC_SYS
RXD / TXD
MAX3232
COMP1 YPbPr
SIDE_CVBS/SIDE_YC
COMP1_LR
SIDE_LR
MNT_R_AMP
SPK 2CH
/SPK_HOTEL
24C64
EEPROM
DDC
HDMI_5V_DET(HPD)/HPD_MST/CEC
24C64
EEPROM
PC_AUD
CVBS_LRIN
DDC
DDR
MADR[0:11]
MDATA[0:15]
SUB
DECODER
DEC_656[0:7]
/ DEC_656_CLK
SW_RESET /
IIC_PART
/
PIP_V(
GAIN
X 4)
SW_RESET / IIC_PART
I2S
MUTE_MAIN / AC_DET
AMP_MUTE_HOTEL
PSU
RL_ON/SELECT/
DIMMING/SYNC
MNT_5V/AC_DET
/SC_RST
TMDS351PAG
LGE6991DD
MSTAR
HYB25DC256163CE-4
TW9910DANA2-GR
I/O expander
(JLC1562)
IIC_SYS
I/O DATA
I/O DATA
RJ45
TPA3107D2
External audio AMP block
AMP
GAIN X 4
IC601
Jack
(P600)
BLOCK DIAGRAM
1. OVERVIEW
Click on the first or last page to see other 52LG5FRC-TA (CHASSIS:LP81Z) service manuals if exist.