DOWNLOAD LG 50PM6700-TK (CHASSIS:PA22A) Service Manual ↓ Size: 18.73 MB | Pages: 74 in PDF or view online for FREE

Model
50PM6700-TK (CHASSIS:PA22A)
Pages
74
Size
18.73 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pm6700-tk-chassis-pa22a.pdf
Date
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4. Analog TV Video Trouble Shooting
SPDIF OUT
CVBS
USB0 
Audio
AMP
I2S Out
MTK5369
USB2
USB1
CVBS/COMP
RS-232C
PC-RGB
OPTIC
LAN
SYSTEM
DDR3x16_2Gb X 4
(8Gb)
LVDS
HDMI1
HDMI2
HDMI3
HDMI4
COMP
RGB,H/V
With EEPROM
Ethernet
UART
HDMI
With
EEPROM
RF Emitter
Module(Bluetooth)
I2C
Sub Micom
(Renesas)
HD : 51P
FHD : 80P
USB2
USB1 
NVRAM
(1Mb)
X-TAL
(27MHz)
HDCP2.0
Wi-Fi
X-TAL
(32.768kHz)
eMMC
(2GB)
RGB_LR
COMP
COMP
PC-AUDIO
CVBS/COMP LR
CVBS/COMP LR
COMP LR
COMP LR
DIF
CVBS
CVBS
DVB T F/NIM
Silicon Tuner
DVB T F/NIM
Silicon Tuner
DIF
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 MTK5369(IC100)
has problems
4. Analog TV Video Trouble Shooting
Checking order
1. Check Tuner power  (Pin #5, #7)
2. Check Tuner I2C level  (Pin #3, #4)
3. Check Video signal  (Pin #8)
Q1002 Base
Pin No.
Description
1
NC_1
2
RESET
3
SCL
4
SDA
5
3.3V
6
SIF
7
1.8V
8
CVBS
9
T/C_IF_AGC
10
T/C_DIF[P]
11
T/C_DIF[N]
12
NC_2
13
NC_3
14
NC_4
15
GND_1
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
GND_2
29
GND_3
30
1.23V
31
S2_RESET
32
3.3V
33
S2_F22_OUTPUT
34
S2_SCL
35
S2_SDA
36
LNB
37
GND_4
SPDIF OUT
CVBS
USB0 
Audio
AMP
I2S Out
MTK5369
USB2
USB1
CVBS/COMP
RS-232C
PC-RGB
OPTIC
LAN
SYSTEM
DDR3x16_2Gb X 4
(8Gb)
LVDS
HDMI1
HDMI2
HDMI3
HDMI4
COMP
RGB,H/V
With EEPROM
Ethernet
UART
HDMI
With
EEPROM
RF Emitter
Module(Bluetooth)
I2C
Sub Micom
(Renesas)
HD : 51P
FHD : 80P
USB2
USB1 
NVRAM
(1Mb)
X-TAL
(27MHz)
HDCP2.0
Wi-Fi
X-TAL
(32.768kHz)
eMMC
(2GB)
RGB_LR
PC-AUDIO
5. Component Video Trouble Shooting
CVBS/COMP LR
CVBS/COMP LR
COMP
COMP
COMP LR
COMP LR
DIF
CVBS
CVBS
DVB T F/NIM
Silicon Tuner
DVB T F/NIM
Silicon Tuner
DIF
Check Signal Format
Is it supported signal?
Y
Check Component JK501 or 
JK503
N
Y
Check Component Signal
R507/R520/R523 or 
R532/R534/R550
N
Y
Check Component Signal
C224/C223/C219 or 
C214/C212/C216
N
Replace it
Y
Y
Check Component Cable
Replace Jack
Maybe MTK5369(IC100)
has problems
5. Component Video Trouble Shooting
Replace one of 
R507/R520/R523
& Recheck
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