DOWNLOAD LG 50PH470U-ZD (CHASSIS:PD32C) Service Manual ↓ Size: 7.54 MB | Pages: 64 in PDF or view online for FREE

Model
50PH470U-ZD (CHASSIS:PD32C)
Pages
64
Size
7.54 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50ph470u-zd-chassis-pd32c.pdf
Date
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LG 50PH470U-ZD (CHASSIS:PD32C) Service Manual ▷ View online

12. HDMI Audio Trouble Shooting
ATSC
SYSTEM
A:DDR3x16_512 X 2
B:DDR3x16_256 X1
= 1.25GB
IF
X-TAL
ATSC
H/NIM
(W/o AD)
IF
eMMC
(4GB)
Commercial  only
PH6700  only
ATSC  only
F/Nim
Silicon Tuner
USB2 
MTK A2
USB1
USB2
IF
USB1 
NVRAM
(256KB)
(27MHz)
y
(TU option)
Silicon Tuner
Demodulator
Cable
SIF
SIF
SBTVD / DVB
(TU option)
USB3
LVDS
HDMI1
HDMI2
HDMI  RX
HD : 51P
FHD : 80P
USB3
Wi-Fi
USB0
Audio
AMP
I2S Out
HDMI3
RGB,H/V
With EEPROM
FHD : 80P
PC-RGB
MHL Bridge
SIL1292
L/R In
CVBS
AV / COMP
HYBRID
PC-AUDIO
COMP
With EEPROM
I2C
Sub Micom  
(Renesas)
X-TAL
(32.768kHz)
SPDIF OUT
RS-232C
OPTIC
UART
RF Emitter
Module
CVBS/COMP _LR
COMP/ _LR
LAN
Ethernet
12. HDMI Audio Trouble Shooting
Check video output
Y
N
Follow procedure HDMI video 
trouble shooting
N
Ch k DDC Li
Replace one R3302, R3303, R3312, 
R3313 R3320 R3321
Check EDID Pull-Up Voltage 
N
Replace one R3330, R3374, R3315, 
R3316, R3311, R3314
Check DDC Line 
R3313, R3320, R3321
& Recheck
Y
Follow procedure All source audio 
trouble shooting
N
Y
p
g
Maybe LGE2122 (MTK Main IC, 
IC105) audio block has problems. 
Replace it
,
,
& Recheck
SYSTEM
A:DDR3x16 512 X 2
Commercial only
13. USB Trouble Shooting
A:DDR3x16_512 X 2
B:DDR3x16_256 X1
= 1.25GB
X-TAL
(27MHz)
eMMC
(4GB)
Commercial  only
F/Nim
Silicon Tuner
Serial TS
Demodulator
Cable
Serial TS
PH6700  only
USB2 
MTK A2
USB1
USB2
USB3
USB1 
NVRAM
(256KB)
USB0
CVBS
CVBS
LVDS
HD : 51P
FHD : 80P
USB3
Wi-Fi
HDMI1
HDMI2
HDMI3
HDMI  RX
MHL Bridge
SIL1292
Audio
AMP
I2S Out
RGB,H/V
With EEPROM
PC-RGB
HDMI3
SIL1292
L/R In
CVBS
AV / COMP
HYBRID
PC-AUDIO
COMP
I2C
Sub Micom  
(Renesas)
X-TAL
(32.768kHz)
CVBS/COMP _LR
COMP/  LR
SPDIF OUT
RS-232C
OPTIC
Eth
t
UART
RF Emitter
Module
COMP/ _LR
LAN
Ethernet
13. USB Trouble Shooting
Check USB 2.0 Cable
Y
Check USB device
If device is 2.5 inch HDD,
Y
,
Check power adaptor
Check 5V voltage level at
analog switch(IC4304, 
IC4305,IC4306)
N
Replace one of
switch(IC4304, IC4305,IC4306 & 
Recheck
Y
Maybe Main Chip (IC105)
has problems. Replace It.
• Exception  
- USB power could be disabled by inrushing current
- In this case, remove the device and try to reboot the TV (AC power off/on)
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