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

Great Company  Great People
Power-Up Boot Fail Trouble Shooting
Check  P500 All
Voltage Level (ST_5V)
Check Power connector
OK ?
Replace Power board
Y
N
Y
Check IC501(pin8)
Voltage Level 0.9V
Replace IC501
Y
N
Check IC502 (pin2)
Voltage Level 2.5V
Replace IC502
Y
N
Check  L501  (pin3) Output
Voltage Level (P_5V) 
Replace  L501
N
Y
9/39
Replace IC101
Great Company  Great People
10/39
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
No OSD Trouble Shooting
Great Company  Great People
No OSD Trouble Shooting
Maybe BCM has problems
Replace IC3202
Check LVDS Cable for damage or 
open conductors
.
Check PDP Module 
Control board
Refer to Module CAS
Y
N
Y
Replace Cable
N
Y
Check SMPS Vs,Va, 5V,17V
Replace Power Board
N
Check P400
5V_ON
Check GPIO Path of IC701
N
Y
Electrical Specifications
Power Supply Sequence
Input Signal Timing Specification
Control Signal Register
Check CAS
It should satisfy the 
Pixel Clock
on CAS.
11/39
Check  IC  
#62(TXAC1-) , #61(TXAC1+) ,
#46(TXAC2-) , #45(TXAC2+),
#30(TXAC3-) ,#29(TXAC3+) 
,#14(TXB4-) , #13(TXBC4+) 
Great Company  Great People
No OSD Trouble Shooting (Module Power Sequence)
< 50R3 >
12/39
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