DOWNLOAD LG 55LV5400 (CHASSIS:LA12E) Service Manual ↓ Size: 7.95 MB | Pages: 79 in PDF or view online for FREE

Model
55LV5400 (CHASSIS:LA12E)
Pages
79
Size
7.95 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55lv5400-chassis-la12e.pdf
Date
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LG 55LV5400 (CHASSIS:LA12E) Service Manual ▷ View online

10. Wireless RX (Sink) 
HDMI
Connector
Control
Connector
SB9121
Network
Processor
SB9111
RF
Receiver
Embedded
CPU
SiI9134
HDMI
Transceiver
MX1605
Serial Flash
SPI Bus
D[35:0]
H/VSYNC
DE
IDCK
I2S(4line)
SPDIFO
I2C(2line)
DDC(2line)
TMDS(8line)
RST#
INT
INT
VCXO
VCXO
Video
PLL
Video
DAC
Audio
PLL
Audio
DAC
I2
C
I2C
ACLK
VCLK
Micom
RST#
CEC
ADCI_P/N
ADCQ_P/N
PCLK_P/N
DACI_P/N
DACQ_P/N
RF
Control
SLEEP
XTAL
(3.6864MHz)
OSC
(54MHz)
MCLK/SCK/W
S
I2C(2line)
1. Trouble shooting - No power
Check stand-by Voltage.
P501  9~12pin : +3.5V_ST
Check Power connector
Main B/D 3.5V Line
Short Check
Check X602 clock
32 KHz
Replace X602
Check P501 PWR_ON.
1pin : 3.3V
Replace Micom(IC602 ) or Main board
Check Multi Voltage
P501 2 pin : *24V , 17 pin : 12V
Replace Power Board
Check Inverter Control 
P501 18 pin : High
Check Power Board or Module
Check IC501/4/5/8 Output Voltage
IC501 : 0.9V,  IC508 :  1.5V
IC504 : 2.5V ,IC505 : 3.3V
Replace IC501/4/5/8
Re-download Micom software.
Check Micom Voltage
IC602  pin 48 : +3.5V
Replace L503
Check LVDS Power Voltage
Q507 : 12V
Replace Q507 
Change Module
ok
ok
ok
ok
ok
ok
ok
ok
ok
No
No
No
No
No
No
No
No
No
Check X101 Clock
54 MHz
Replace X101
ok
No
Replace Power board.
ok
Check RF Cable & Signal
Check Tuner 3.3V Power
L2103
Replace L2103
Check Tuner 1.26V Power 
IC2103  2pin : 1.26V
Check IF_P/N Signal
TU2101 17/18 Pin
Replace IC2103.
Check Tuner 5V Power
L2104,2101
Check IC507
Check  BCM LVDS Output
Replace  or BCM( IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace ICIC507
No
Bad Tuner. Replace Tuner.
Replace L2101/4
ok
2. Trouble shooting - No video (Digital TV video)
3. Trouble shooting - No video (Analog TV video)
Check RF Cable & Signal
Check Tuner 3.3V Power
L2103
Replace L2103
Check Tuner 1.2V Power 
IC2103   2 pin : 1.2V
Check CVBS Signal
TU2101  11 Pin
Replace IC2103.
Check Tuner 5V Power
L2104,2101
Check IC507
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC507
No
Bad Tuner. Replace Tuner.
Replace  L2104,2101
ok
Check BCM LVDS Output
Replace BCM( IC101) or Main Board.
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