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

3. Digital TV Video Trouble Shooting(DVB) 
Check RF Cable
Y
Check Tuner(TU6502) Power
(3 3V 1 8V)
N
Replace one of Bead
& R h k
Pin No.
Description
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
(3.3V, 1.8V)
& Recheck
Y
Check IF Signal pin #10,11
N
Maybe Tuner has problems
5
3.3V
6
SIF
7
1.8V
8
CVBS
9
IF_AGC
Maybe LGE2122 (IC105)
has problems
Y
10
IF_P
11
IF_N
12
NC
13
NC
14
NC
Pin #1
Pin #27
Pin #15
15
GND
16
NC
17
NC
18
NC
19
NC
Pin #12
Pin #13
20
NC
21
NC
22
NC
23
NC
24
NC
Checking order
1 Check Tuner power (Pin #5 #7)
25
NC
26
NC
27
NC
57
LNA_CTRL_1
58
LNA_CTRL_2
1. Check Tuner power  (Pin #5, #7)
2. Check Tuner I2C level  (Pin #3, #4)
3. Check IF_AGC level  (Pin #9)
4. Check IF Signal(Pin #10, #11)
SYSTEM
A:DDR3x16 512 X 2
Commercial only
4. Analog TV Video Trouble Shooting(DVB) 
A:DDR3x16_512 X 2
B:DDR3x16_256 X1
= 1.25GB
X-TAL
(27MHz)
eMMC
(4GB)
Commercial  only
F/Nim
Silicon Tuner
IF
Cable
IF
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
4. Analog TV Video Trouble Shooting(DVB)
Check RF Cable
Y
N
Check Tuner(TU6502) Power
(3 3V 1 8V)
Replace one of Bead
& R h k
Pin No.
Description
1
RF_S/W_CTL
2
RESET
3
SCL
Check CVBS Signal
TU6502 #8 Pin
N
Y
(3.3V, 1.8V)
& Recheck
Maybe Tuner(TU6502) has problems
3
SCL
4
SDA
5
3.3V
6
SIF
7
1.8V
8
CVBS
Y
Check CVBS Signal
Q6501 Base
N
Replace one of 
Q6501 Base
& Recheck
Y
8
CVBS
9
IF_AGC
10
IF_P
11
IF_N
12
NC
13
NC
Maybe LGE2122 (IC105)
has problems
Pin #1
Pin #12
Pin #13
Pin #27
Pin #15
13
NC
14
NC
15
GND
16
NC
17
NC
18
NC
Checking order
1 Check Tuner power (Pin #5 #7)
Pin #13
18
NC
19
NC
20
NC
21
NC
22
NC
23
NC
1. Check Tuner power  (Pin #5, #7)
2. Check Tuner I2C level  (Pin #3, #4)
3. Check Video signal  (Pin #8)
23
NC
24
NC
25
NC
26
NC
27
NC
57
LNA_CTRL_1
_
_
58
LNA_CTRL_2
SYSTEM
A:DDR3x16 512 X 2
Commercial only
5. AV/Component Video 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
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