DOWNLOAD LG 50PM4700-DA (CHASSIS:PB22A) Service Manual ↓ Size: 13.65 MB | Pages: 74 in PDF or view online for FREE

Model
50PM4700-DA (CHASSIS:PB22A)
Pages
74
Size
13.65 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pm4700-da-chassis-pb22a.pdf
Date
PREV: LG 50PM970T-ZA (CHASSIS:PD22C) Service Manual

LG 50PM4700-DA (CHASSIS:PB22A) Service Manual ▷ View online

SPDIF OUT
USB0 
Audio
AMP
I2S Out
MTK5369
USB2
USB1
RS-232C
PC-RGB
OPTIC
LAN
SYSTEM
DDR3x16_2Gb X 4
(8Gb)
LVDS
HDMI1
HDMI2
HDMI3
HDMI4
RGB,H/V
With EEPROM
Ethernet
CVBS
UART
HDMI
With
EEPROM
RF Emitter
Module(Bluetooth)
I2C
Sub 
Micom
(Renesas
)
Parallel TS
HD : 51P
FHD : 80P
USB2
USB1 
NVRAM
(1Mb)
X-TAL
(27MHz)
HDCP2.0
Wi-Fi
CVBS
F/Nim
Silicon Tuner
F/Nim
Silicon Tuner
Parallel TS
X-TAL
(32.768kHz)
eMMC
(2GB)
Demodulator
Cable
CVBS1/2 _LR
COMP1/2 _LR
CVBS/COMP2 _LR
COMP1_LR
4. Analog TV Video Trouble Shooting
CVBS
CVBS/COMP2
COMP
RGB_LR
COMP1
COMP
PC-AUDIO
Check RF Cable
Y
Check CVBS Signal
TU1001 #8 Pin
N
Y
Check CVBS Signal
Q1002 Base
N
Replace one of 
Q1002 Base
& Recheck
Y
N
Y
Check Tuner Power
(3.3V, 1.8V)
Replace one of 
L1108/L1109
& Recheck
Maybe Tuner(TU1002-1) has 
problems
Maybe BCM2112 (IC100)
has problems
4. Analog TV Video Trouble Shooting
Checking order
1. Check Tuner power  (Pin #5, #7,#12, 
#13)
2. Check Tuner I2C level  (Pin #3, #4)
3. Check Video signal  (Pin #8)
Pin No.
Description
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
3.3V
6
SIF
7
1.8V
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
3.3V
13
1.23V
14
NC_4
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
Pin #1
Pin #11
Pin #13
Pin #14
Pin #26
Pin #27
Pin #15
Q1002 Base
SPDIF OUT
CVBS
USB0 
Audio
AMP
I2S Out
MTK5369
USB2
USB1
CVBS/COMP2
RS-232C
PC-RGB
PC-AUDIO
OPTIC
LAN
SYSTEM
DDR3x16_2Gb X 4
(8Gb)
LVDS
HDMI1
HDMI2
HDMI3
HDMI4
COMP
RGB,H/V
With EEPROM
Ethernet
CVBS
UART
HDMI
With
EEPROM
RF Emitter
Module(Bluetooth)
I2C
Sub 
Micom
(Renesas
)
Parallel TS
HD : 51P
FHD : 80P
USB2
USB1 
NVRAM
(1Mb)
X-TAL
(27MHz)
HDCP2.0
Wi-Fi
CVBS
F/Nim
Silicon Tuner
F/Nim
Silicon Tuner
Parallel TS
X-TAL
(32.768kHz)
eMMC
(2GB)
Demodulator
Cable
CVBS1/2 _LR
COMP1/2 _LR
RGB_LR
CVBS/COMP2 _LR
COMP1_LR
COMP1
COMP
5. Component Video Trouble Shooting
Check Signal Format
Is it supported signal?
Y
Check Component JK501/JK503
N
Y
Check Component Signal
R507/R520/R523/R532/R534/R550
N
Y
Check Component Signal
C257/C216/C212/C224/C223/C219
N
Replace it
Y
Y
Check Component Cable
Replace Jack
Maybe BCM2112 (IC100)
has problems
5. Component Video Trouble Shooting
Replace one of 
R507/R520/R523/R532/R534/R550
& Recheck
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