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Model
32LK310 32LK310Y 32LK310Z 32LK311 32LK312 32LK313 (CHASSIS:LP91J)
Pages
28
Size
2.84 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lk310-32lk310y-32lk310z-32lk311-32lk312-32lk313-.pdf
Date

LG 32LK310 / 32LK310Y / 32LK310Z / 32LK311 / 32LK312 / 32LK313 (CHASSIS:LP91J) Service Manual ▷ View online

- 17 -
BLOCK DIAGRAM
RGB-PC
(JK
20
2)
TUN
ER
(T
U500)
COMP
ONENT / 
AV
1
Aud
io
 ou
t  (
JK
10
2)
AV
2
(J
K
2
0
1
)
A
V
_L
IN/RIN
 :
50
0
m
V
rm
s
SP
K
_
L
 
SP
K
_
R
COM
P
ONENT
_
L
/R
 :
500
m
V
rm
s
 
AV
_
V
IN
:
1V
p
p
NT
P
3
2
0
0L
COM
P
_
Y
/Pb
/Pr
IR
 &
 L
E
D (P201
)
HDM
I_DA
T
A
0
TU
_M
A
IN
CO
M
P
O
N
ENT
_
Y/Pb
/P
r
1/
0.
7
V
p
p
AV
_
V
IN
COM
P
_L
IN
/RIN 
L_
C
H
R_CH
A
V
_L
IN/RIN
 
PC-S
OU
ND
(JK
20
3)
I2S
_
M
C
L
K
I2
S_
SDO
I2S
_
W
S
I2
S_
SC
K
 
TM
D
S
L
IPS
RL
_
O
N
/ID
ISP
_
EN
PA
NEL
_
ST
A
T
US
E-
DI
M
OP
C_OUT
EEP
RO
M
(24L
C25
6
)
Ser
ial Fl
as
h
(M
X25L
64)
EEP
RO
HDC
P
(24
W
C08)
EEP
_
S
CL
/SDA
EEP
_
S
CL
/SDA
TX
C
E
2
TX
C
E
3–
TX
C
L
K
E
TX
C
E
1
TX
C
E
0
TX
C
O
1
TX
C
O
3
TX
C
O
2
TX
C
O
0
TX
C
L
K
O
M_
S
C
L
/S
D
A
MAI
N
 S
C
L
A
E
R
Matri
x
(L
G
E
4767
A
)
(I
C800
)
EE
P
R
OM
24
C02
IC30
2
 
TU
5
0
0
 
IC
80
2
IC
80
3
IC
80
1
IC
60
0
P40
2
P40
3
M
_
SCL
/SDA
SIDE
REA
R
HDM
I3
(J
K
3
0
3
)
USB
(J
K
2
0
4
)
RS-232
C
(JK
20
0)
USB(SV
C)
(JK
20
5)
HDMI1
(JK
30
1)
HDMI2
(JK
30
2)
EE
P
R
OM
24
C02
IC30
1
 
EE
P
R
OM
24
C02
IC30
0
 
EE
P
R
OM
24
C02
IC30
0
 
DDC_
S
CL
1/S
D
A
1
DDC_
S
CL
2/S
D
A
2
DDC_
S
CL
3/S
D
A
3
Con
tr
o
ll
e
r
S
T
3232
CDR
IC20
0
 
RXD/T
X
D
EE
P
R
OM
24
C02
IC20
1
 
DSU
B
_S
CL
/SD
A
P40
1
SP
I_CZ
/DO
SP
I_CL
K
/DI
HDM
I_DA
T
A
1
HDM
I_DA
T
A
2
US
B
 DN/DP
P
C
_R/G/B
PC_
V
S
/H
S
TX
D
/R
X
D
PC_
A
U
D
_
L
/R
TX
C
O
4
TX
C
E
4–
FH
D LV
DS
 co
nne
cto
r
HD L
VD
S c
onnec
to
r
DDR
2 SDR
A
M
(512
M
 B
y
te
)
IC
900
DDR
2_
CK
E
DDR
2_
WE
Z
DDR
2_
DQS
0
 – 
DDR
2_
M
C
L
K
DDR
2_
B
A
0/1
DDR
2_
DQS
1
 –
DDR
2_
ODT
DDR
2_
DQM
0
/1
SI
DE_
V
IN
S
IDE
_L
IN/RIN
 
- 18 -
300
500
510
120
A10
200
800
530
550
810
900
910
540
521
400
A21
A2
A5
LV
1
Option
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
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.
CVBS_LIN
ZD100
SD05
ZD103
SD05
ZD105
SD05
CVBS_VIN
CVBS_RIN
ZD104
SD05
ZD101
SD05
ZD102
SD05
D101
30V
D100
30V
D104
30V
D105
30V
COMP2_Y
COMP2_PB
COMP2_PR
COMP2_L
COMP2_R
R109
75
R108
75
R107
75
R104
220K
R118
12K
R117
12K
R119
12K
R120
12K
R113
10K
R115
10K
R116
10K
R100
220K
R111
220K
R112
220K
R110
75
R114
10K
R121
75
JP102
Q102
RT1C3904-T112
E
B
C
R105
470
MNT_VOUT_T
P_12V_SMALL_15V
JP101
R101
220
R102
402
READY
R103
68
Q101
ISA1530AC1
E
B
C
R106
47
C104
5600pF
50V
ZD106
30V
ZD107
30V
C101
10uF
16V
Q105
RT1C3904-T112
E
B
C
MUTE_LINE
R124
1K
C103
5600pF
50V
R122
0
R123
1K
Q103
RT1C3904-T112
E
B
C
Q106
RT1C3904-T112
E
B
C
MNT_LOUT
Q104
RT1C3904-T112
E
B
C
C102
10uF
16V
MNT_ROUT
R125
0
MUTE_LINE
JK101
PPJ238-01
NON_AUDIO_OUT
5D
[GN2]O-SPRING
6D
[GN2]E-LUG
4D
[GN2]CONTACT
7E
[BL2]E-LUG-S
5E
[BL2]O-SPRING
7F
[RD2]E-LUG-S
5F
[RD2]O-SPRING_1
5G
[WH2]O-SPRING
4H
[RD2]CONTACT
5H
[RD2]O-SPRING_2
6H
[RD2]E-LUG
6A
[YL1]E-LUG
5A
[YL1]O-SPRING
4A
[YL1]CONTACT
5B
[WH1]O-SPRING
4C
[RD1]CONTACT
5C
[RD1]O-SPRING
6C
[RD1]E-LUG
JK102
PPJ239-03
AUDIO_OUT
5J
[GN2]O-SPRING
6J
[GN2]E-LUG
4J
[GN2]CONTACT
7K
[BL2]E-LUG-S
5K
[BL2]O-SPRING
7L
[RD2]E-LUG-S
5L
[RD2]O-SPRING_1
5M
[WH2]O-SPRING
4N
[RD2]CONTACT
5N
[RD2]O-SPRING_2
6N
[RD2]E-LUG
6D
[WH1]E-LUG
5D
[WH1]O-SPRING
7E
[RD1]E-LUG-S
5E
[RD1]O-SPRING_1
7F
[YL1]E-LUG-S
5F
[YL1]O-SPRING_1
4F
[YL1]CONTACT_1
5G
[WH1]O-SPRING_2
4H
[RD1]CONTACT_2
5H
[RD1]O-SPRING_2
6H
[RD1]E-LUG
1  9
INPUT1
COMPONENT / AV IN / AV AUDIO OUT
GAIN X 4
POP NOISE
POP NOISE
AUDIO_OUT OPTION BLOCK
2010/11/22
LK310
LP91J
EAX64045802
U
S
B
 
D
O
W
N
 
S
T
R
E
A
M
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.
SIDE_LIN
SIDE_RIN
ZD203
5.6B
SIDE_AV
SIDE_V
ZD202
5.6B
SIDE_AV
IR_OUT
+3.5V_MST
TXD
R204
4.7K
IC200
ST3232CDR
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
T2OUT
8
R2IN
9
R2OUT
10
T2IN
11
T1IN
12
R1OUT
13
R1IN
14
T1OUT
15
GND
16
VCC
R205
4.7K
RXD
+3.5V_MST
ZD200
SD05
DSUB_SDA
PC_VS
ZD201
SD05
PC_B
DSUB_SDA
PC_AUD_R
PC_G
DSUB_SCL
IC201
CAT24C02WI-GT3
RGB_EEPROM_CATAL
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
DDC_WP
PC_HS
PC_AUD_L
DSUB_SCL
PC_R
D202
30V
CDS3C30GTH
D203
30V
CDS3C30GTH
D200
30V
D201
30V
D206
30V
SIDE_AV
D205
30V
SIDE_AV
D204
30V
D209
30V
C203
0.1uF
16V
C200
0.1uF
16V
C201
0.1uF
16V
C202
0.1uF
16V
C205
0.01uF
R202
100
R203
100
R227
75
SIDE_AV
R223
220K
READY
R222
220K
READY
R226
12K
SIDE_AV
R228
12K
SIDE_AV
R211
75
R212
75
R213
75
R214
4.7K
R215
4.7K
R231
220K
R232
220K
R233
10K
R234
10K
R235
12K
R236
12K
R220
4.7K
R221
4.7K
R216
100
R217
100
R218
100
C208
0.1uF
50V
OCP_READY
C209
10uF
16V
OCP_READY
L200
120OHM
OCP_READY
+5V_USB
R209
1K
OCP_READY
R210
4.7K
OCP_READY
R237
0
Non_OCP
C210
10uF
6.3V
R207
68
R208
68
C213
68pF
50V
C211
68pF
50V
R219
4.7K
READY
L201
500
C212
220uF
16V
C214
100uF
16V
D213
OCP_READY
A
AC
C
R238
510
OCP_READY
R224
10K
SIDE_AV
R225
10K
SIDE_AV
JK200
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
JK201
PPJ235-01
SIDE_AV
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]O-SPRING
3C
[RD]CONTACT
4C
[RD]O-SPRING
5C
[RD]E-LUG
JK202
SPG09-DB-010
6630TGA004Q
RED
1
GREEN
2
BLUE
3
GND_1
4
DDC_GND
5
RED_GND
6
GREEN_GND
7
BLUE_GND
8
NC
9
SYNC_GND
10
GND_2
11
DDC_DATA
12
H_SYNC
13
V_SYNC
14
DDC_CLOCK
15
SHILED
16
JK203
PEJ027-01
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
D211
ENKMC2838-T112
A1
C
A2
+5V_MULTI
R200
0
D207
30V
D208
30V
D210
30V
USB_DN
USB_DP
ZD204
30V
READY
ZD205
30V
READY
JK205
KJA-UB-0-0037
REAR_USB
1
2
3
4
5
R229
0
REAR_USB
USB_DL_P
R230
0
REAR_USB
USB_DL_N
USB_DL_P
USB_DL_N
IC202
AP2191SG-13
OCP_READY
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
+3.5V_MULTI
JK204
KJA-UB-4-0004
SIDE_USB
1
2
3
4
5
IC201-*1
R1EX24002ASAS0A
RGB_EEPROM_RENESAS
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
2  9
INPUT2
2010/11/22
USB
It’s possibel to 27~47ohm
**  1A Design
SIDE AV
RS-232C
PC EDID
PC SOUND
Close to SIDE_USB
PC
LK310
LP91J
EAX64045802
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