DOWNLOAD LG 50PZ750-UG (CHASSIS:PU12A) Service Manual ↓ Size: 12.92 MB | Pages: 75 in PDF or view online for FREE

Model
50PZ750-UG (CHASSIS:PU12A)
Pages
75
Size
12.92 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pz750-ug-chassis-pu12a.pdf
Date
PREV: LG 50PZ750S-ZA / 50PZ755S-ZA (CHASSIS:PD12C) Service Manual

LG 50PZ750-UG (CHASSIS:PU12A) Service Manual ▷ View online

Great Company  Great People
Check video output
Follow procedure All source audio trouble 
shooting  
(on page 27)
Y
Follow procedure digital TV video 
trouble shooting
(on page 15)
N
N
Replace BCM35230 (IC101)
29/39
Digital TV Audio Trouble Shooting
Great Company  Great People
28/39
AV1,2 L/R
COMP 1,2 L/R
Side HDMI 1/2/3/4
CVBS waveform
IF waveform
STA368
(Digital AMP)
Reset
I2S
LGE35230
MCLK
HDMI CEC
IR
CVBS
Buffer
SIF
Buffer
RS-232C
I2C
CVBS(ATV)
NTSC/ATSC
TUNER
X-tal
(54MHz)
NAND Flash
(8GB)
DDR3 (2GB)
TDVJ-H101F
24C16
24C16
Local
Local
KEY
KEY
MAIN IF
DP/DM
DP/DM
NEC
NEC
Micom
Micom
COMP1
COMP2
Y/Cb/Cr
Y/Cb/Cr
R/G/B 
RGB-PC
Rear AV
CVBS
Side AV
CVBS
L/R
L/R
RGB-PC 
Audio In
SIF
Audio
Front 
End
Video 
Front 
End
TMDS/DDC
HDMI 
RX
I2C
HD/SD
Video
Encoder
Audio
DSP
SPDIF Out
UART
RX/TX
UART
UART
USB 2.0
RMII
RMII
DDC
SIF
SII9287B
HDMI SW
LAN
LAN
3DF_ASIC
LG8300
3DF_ASIC
LG8300
DDR2
(256Mbit)
X-tal
(25MHz)
Serial_Flash
(2Mbit)
LVDS 2Ch
Left (2D):
1920x1080/60Hz
LVDS
 (
 8
0
Pin
 )
LVDS 2Ch
Right(2D) :
1920x1080/60Hz
Analog TV Audio Trouble Shooting
Great Company  Great People
Analog TV Audio Trouble Shooting
Check video output
Follow procedure All source audio trouble 
shooting 
(on page 27
Y
Follow procedure analog TV video 
trouble shooting
(on page 15)
N
Replace BCM35230 (IC101)
Check TU2103 (pin3) for 5V
Replace IC500 or IC506
N
Y
Check SIF signal (TU2103 #9)
Replace Tuner
N
Y
Check SIF signal (R2138)
Check SIF line
N
Y
31/39
< SIF waveform – sample >
- Defend on the input signal.
Y
Great Company  Great People
28/39
AV1,2 L/R
COMP 1,2 L/R
Side HDMI 1/2/3/4
CVBS waveform
IF waveform
STA368
(Digital AMP)
Reset
I2S
LGE35230
MCLK
HDMI CEC
IR
CVBS
Buffer
SIF
Buffer
RS-232C
I2C
CVBS(ATV)
NTSC/ATSC
TUNER
X-tal
(54MHz)
NAND Flash
(8GB)
DDR3 (2GB)
TDVJ-H101F
24C16
24C16
Local
Local
KEY
KEY
MAIN IF
DP/DM
DP/DM
NEC
NEC
Micom
Micom
COMP1
COMP2
Y/Cb/Cr
Y/Cb/Cr
R/G/B 
RGB-PC
Rear AV
CVBS
Side AV
CVBS
L/R
L/R
RGB-PC 
Audio In
SIF
Audio
Front 
End
Video 
Front 
End
TMDS/DDC
HDMI 
RX
I2C
HD/SD
Video
Encoder
Audio
DSP
SPDIF Out
UART
RX/TX
UART
UART
USB 2.0
RMII
RMII
DDC
SIF
SII9287B
HDMI SW
LAN
LAN
3DF_ASIC
LG8300
3DF_ASIC
LG8300
DDR2
(256Mbit)
X-tal
(25MHz)
Serial_Flash
(2Mbit)
LVDS 2Ch
Left (2D):
1920x1080/60Hz
LVDS
 (
 8
0
Pin
 )
LVDS 2Ch
Right(2D) :
1920x1080/60Hz
Component / RGB / AV Audio Trouble Shooting
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