DOWNLOAD LG 50PM4700-SA (CHASSIS:PB22A) Service Manual ↓ Size: 14.11 MB | Pages: 75 in PDF or view online for FREE

Model
50PM4700-SA (CHASSIS:PB22A)
Pages
75
Size
14.11 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pm4700-sa-chassis-pb22a.pdf
Date
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Check video output
Y
Follow procedure All source audio 
trouble shooting
Maybe BCM2112 internal audio DSP 
has problems. Replace It
N
Follow procedure digital TV video 
trouble shooting
N
10. Digital TV Audio Trouble Shooting
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
11. Analog TV Audio Trouble Shooting
CVBS
CVBS/COMP2
COMP
RGB_LR
COMP1
COMP
PC-AUDIO
Follow procedure analog TV video 
trouble shooting
N
Check video output
Y
Check SIF Signal
TU1001 #6 Pin
N
Y
Check SIF Signal
C241
N
Replace one of 
Q1001, C1000, R1006, R1012, R1013
& Recheck
Y
Follow procedure All source audio 
trouble shooting
N
Maybe BCM2112 audio block has 
problems. Replace It
N
Y
Check Tuner Power
(3.3V, 1.8V)
Replace one of L1108/L1109
& Recheck
Maybe Tuner(TU1001) has problems
11. Analog TV Audio Trouble Shooting
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
12. Component / RGB / AV Audio Trouble Shooting
CVBS
CVBS/COMP2
COMP
RGB_LR
COMP1
COMP
PC-AUDIO
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