DOWNLOAD LG 55GA7800-CB (CHASSIS:LC37G) Service Manual ↓ Size: 7.58 MB | Pages: 42 in PDF or view online for FREE

Model
55GA7800-CB (CHASSIS:LC37G)
Pages
42
Size
7.58 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55ga7800-cb-chassis-lc37g.pdf
Date

LG 55GA7800-CB (CHASSIS:LC37G) Service Manual ▷ View online

THERMAL
THERMAL
THERMAL
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
1uF
C9817
10V
C9815
10uF
10V
R9811
3.9K
1%
R9810
4.3K
1%
+3.3V_FRC
C9818
560pF
50V
R9809
10K
+1.5V_FRC_DDR
IC9803
AP7173-SPG-13 HF(DIODES)
EAN41406705
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
R9812
1K
1%
0.1uF
C9816
16V
C9806
1uF
10V
C9802
10uF
16V
C9804
100pF
50V
L9802
BLM18PG121SN1D
C9810
0.1uF
16V
IC9802
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
+12V
C9812
22uF
10V
POWER_ON/OFF2_2
R9806
10K
OPT
+12V
C9801
10uF
16V
R9807
10K
1%
R9805
10K
L9801
BLM18PG121SN1D
C9805
1uF
10V
IC9801
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
C9811
22uF
10V
C9809
0.1uF
16V
POWER_ON/OFF2_2
+1.26V_FRC
R9801
6.8K
1%
R9803
1K
1%
R
9
8
0
8
1
2
K
1
%
+3.3V_FRC
R9802
33K
1%
R9804
220
1%
C9813
22uF
10V
OPT
C9807
3300pF
50V
L9803
3.6uH
NR8040T3R6N
C9808
3300pF
50V
L9804
3.6uH
NR8040T3R6N
C9814
22uF
10V
OPT
+3.3V_FRC
R9813
10K
C9821
1uF
10V
R9814
330K
OPT
C9803
27pF
50V
C9819
10uF
16V
C9820
10uF
16V
URSA5 Power Block
LG1152
+1.5V_FRC
+1.5V of DDR&URSA5 uses same power line
Vout=0.6*(1+R1/R2)
TYPICAL 350mA
R2
R1
Vout=0.765*(1+R1/R2)
R2
3A
R1
Switching freq: 700K
R2
Vout=0.765*(1+R1/R2)
R1
3A
Switching freq: 700K
CORE +1.26V_FRC
TYPICAL 980mA
TYPICAL 300mA
+3.3V_FRC
2011. 10. 31
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
R11019
0
IR_Bla
D11001
IR_Bla
C11005
22pF
50V
IR_Bla
C11003
22pF
50V
IR_Bla
X11001
8MHz
IR_Bla
IRB_SPI_CK
IRB_SPI_SS
IRB_SPI_MISO
IRB_SPI_MOSI
R11006
22 IR_Bla
R11007
22 IR_Bla
R11008
22
IR_Bla
R11009
22 IR_Bla
P11001
12507WS-04L
IR_Bla
1
2
3
4
5
JP11002
JP11001
IR_B_RESET
+3.3V_IR_Bla
+3.3V_IR_Bla
10uF
10V
C11004
IR_Bla
C11006
0.1uF
16V
OPT
+3.3V_IR_Bla
L11001
BLM18PG121SN1D
IR_Bla
+3.3V_IR_Bla
R11022
4.7K
IR_Bla
+3.3V_NORMAL
+3.3V_IR_Bla
+5V_NORMAL
C11009
0.1uF
16V
OPT
R11021
10K
IR_Bla
Q11003
MMBT3904(NXP)
IR_Bla
E
B
C
R11001
1K
IR_Bla
C11010
0.1uF
16V
IR_Bla
D11002
IR_Bla
IC11002
MC96FR3128R
IR_Bla
3
XOUT
2
XIN
4
P20/RESETB
1
VSS
6
P11/KS9/MISO1
5
P10/KS8/MOSI1
7
P12/KS10/INT0
8
P13/KS11/INT1
9
P14/KS12/SS1/INT2
10
P15/KS13/XCK1/INT3
11
P16/KS14/MOSI0
12
P17/KS15/MISO0
13
P30/SS0/EC2/EXTREF
14
P31/XCK0/SENSOR
15
P36/INT0/XCK0
16
P37/INT1/SS0
17
P00/KS0/T0
18
P01/KS1/T1/PWM1
19
P02/KS2/T2
20
P03/KS3/T3/PWM3
21
P04/KS4/EC0
22
P05/KS5/EC3
23
P06/KS6
24
P07/KS7
25
P21/INT2/DSCL
26
P22/INT3/DSDA
27
REMOUT
28
VDD
Q11002
AO3438
IR_Bla
G
D
S
Q11001
SBT2222A_AUK
IR_Bla
E
B
C
C11008
10uF
IR_Bla
R11015
120
IR_Bla
IRB_DATA
IRB_3.3V
IRB_DATA
IRB_3.3V
R11023
0
1/16W
5%
IRB_NON_CI
R11024
0
1/16W
5%
IRB_NON_CI
R11002
0
1/16W
5%
IRB_CI
R11003
0
1/16W
5%
IRB_CI
HP_LOUT
HP_ROUT
L11002
CM2012FR27KT
IR_Bla
C11011
27pF
50V
IR_Bla
C11012
27pF
50V
IR_Bla
JK11001
PEJ038-3B6 
IR_Bla_JK
3
DETECT
4
L
5
GND
1
R
IR Blaster/Boost
LG1152 A1
2011. 06. 02
IR_B Micom Download
IR BLASTER
DSCL
DSDA
94
Close to JK11001
Pattern Width : 0.5mm
Pattern Width : 0.5mm
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
R11019
0
IR_Bla
D11001
IR_Bla
C11005
22pF
50V
IR_Bla
C11003
22pF
50V
IR_Bla
X11001
8MHz
IR_Bla
IRB_SPI_CK
IRB_SPI_SS
IRB_SPI_MISO
IRB_SPI_MOSI
R11006
22 IR_Bla
R11007
22 IR_Bla
R11008
22
IR_Bla
R11009
22 IR_Bla
P11001
12507WS-04L
IR_Bla
1
2
3
4
5
JP11002
JP11001
IR_B_RESET
+3.3V_IR_Bla
+3.3V_IR_Bla
10uF
10V
C11004
IR_Bla
C11006
0.1uF
16V
OPT
+3.3V_IR_Bla
L11001
BLM18PG121SN1D
IR_Bla
+3.3V_IR_Bla
R11022
4.7K
IR_Bla
+3.3V_NORMAL
+3.3V_IR_Bla
+5V_NORMAL
C11009
0.1uF
16V
OPT
R11021
10K
IR_Bla
Q11003
MMBT3904(NXP)
IR_Bla
E
B
C
R11001
1K
IR_Bla
C11010
0.1uF
16V
IR_Bla
D11002
IR_Bla
IC11002
MC96FR3128R
IR_Bla
3
XOUT
2
XIN
4
P20/RESETB
1
VSS
6
P11/KS9/MISO1
5
P10/KS8/MOSI1
7
P12/KS10/INT0
8
P13/KS11/INT1
9
P14/KS12/SS1/INT2
10
P15/KS13/XCK1/INT3
11
P16/KS14/MOSI0
12
P17/KS15/MISO0
13
P30/SS0/EC2/EXTREF
14
P31/XCK0/SENSOR
15
P36/INT0/XCK0
16
P37/INT1/SS0
17
P00/KS0/T0
18
P01/KS1/T1/PWM1
19
P02/KS2/T2
20
P03/KS3/T3/PWM3
21
P04/KS4/EC0
22
P05/KS5/EC3
23
P06/KS6
24
P07/KS7
25
P21/INT2/DSCL
26
P22/INT3/DSDA
27
REMOUT
28
VDD
Q11002
AO3438
IR_Bla
G
D
S
Q11001
SBT2222A_AUK
IR_Bla
E
B
C
C11008
10uF
IR_Bla
R11015
120
IR_Bla
IRB_DATA
IRB_3.3V
IRB_DATA
IRB_3.3V
R11023
0
1/16W
5%
IRB_NON_CI
R11024
0
1/16W
5%
IRB_NON_CI
R11002
0
1/16W
5%
IRB_CI
R11003
0
1/16W
5%
IRB_CI
HP_LOUT
HP_ROUT
L11002
CM2012FR27KT
IR_Bla
C11011
27pF
50V
IR_Bla
C11012
27pF
50V
IR_Bla
JK11001
PEJ038-3B6 
IR_Bla_JK
3
DETECT
4
L
5
GND
1
R
IR Blaster/Boost
LG1152 A1
2011. 06. 02
IR_B Micom Download
IR BLASTER
DSCL
DSDA
94
Close to JK11001
Pattern Width : 0.5mm
Pattern Width : 0.5mm
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
R11019
0
IR_Bla
D11001
IR_Bla
C11005
22pF
50V
IR_Bla
C11003
22pF
50V
IR_Bla
X11001
8MHz
IR_Bla
IRB_SPI_CK
IRB_SPI_SS
IRB_SPI_MISO
IRB_SPI_MOSI
R11006
22 IR_Bla
R11007
22 IR_Bla
R11008
22
IR_Bla
R11009
22 IR_Bla
P11001
12507WS-04L
IR_Bla
1
2
3
4
5
JP11002
JP11001
IR_B_RESET
+3.3V_IR_Bla
+3.3V_IR_Bla
10uF
10V
C11004
IR_Bla
C11006
0.1uF
16V
OPT
+3.3V_IR_Bla
L11001
BLM18PG121SN1D
IR_Bla
+3.3V_IR_Bla
R11022
4.7K
IR_Bla
+3.3V_NORMAL
+3.3V_IR_Bla
+5V_NORMAL
C11009
0.1uF
16V
OPT
R11021
10K
IR_Bla
Q11003
MMBT3904(NXP)
IR_Bla
E
B
C
R11001
1K
IR_Bla
C11010
0.1uF
16V
IR_Bla
D11002
IR_Bla
IC11002
MC96FR3128R
IR_Bla
3
XOUT
2
XIN
4
P20/RESETB
1
VSS
6
P11/KS9/MISO1
5
P10/KS8/MOSI1
7
P12/KS10/INT0
8
P13/KS11/INT1
9
P14/KS12/SS1/INT2
10
P15/KS13/XCK1/INT3
11
P16/KS14/MOSI0
12
P17/KS15/MISO0
13
P30/SS0/EC2/EXTREF
14
P31/XCK0/SENSOR
15
P36/INT0/XCK0
16
P37/INT1/SS0
17
P00/KS0/T0
18
P01/KS1/T1/PWM1
19
P02/KS2/T2
20
P03/KS3/T3/PWM3
21
P04/KS4/EC0
22
P05/KS5/EC3
23
P06/KS6
24
P07/KS7
25
P21/INT2/DSCL
26
P22/INT3/DSDA
27
REMOUT
28
VDD
Q11002
AO3438
IR_Bla
G
D
S
Q11001
SBT2222A_AUK
IR_Bla
E
B
C
C11008
10uF
IR_Bla
R11015
120
IR_Bla
IRB_DATA
IRB_3.3V
IRB_DATA
IRB_3.3V
R11023
0
1/16W
5%
IRB_NON_CI
R11024
0
1/16W
5%
IRB_NON_CI
R11002
0
1/16W
5%
IRB_CI
R11003
0
1/16W
5%
IRB_CI
HP_LOUT
HP_ROUT
L11002
CM2012FR27KT
IR_Bla
C11011
27pF
50V
IR_Bla
C11012
27pF
50V
IR_Bla
JK11001
PEJ038-3B6 
IR_Bla_JK
3
DETECT
4
L
5
GND
1
R
IR Blaster/Boost
LG1152 A1
2011. 06. 02
IR_B Micom Download
IR BLASTER
DSCL
DSDA
94
Close to JK11001
Pattern Width : 0.5mm
Pattern Width : 0.5mm
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LG 55GA7800-CB (CHASSIS:LC37G) Service Manual ▷ Download