22LN4500 (CHASSIS:LD31A) - LG TV Service Manual (repair manual). Page 22

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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.
INTERFACE
R444
15K
JK403
XRJV-01V-0-D12-080
SUB(ETHERNET_XMULTIPLE(MP))
1
2
3
4
5
6
7
8
9
9
R416
0
(OPT)IR_OUT
JP402
R405
0
OPT
C419
47pF
50V
R446
10K
+3.3V_ST
R441
470K
OPT
R429 0
JK404
KJA-PH-1-0177
Hotel_Model(RS232C apply)
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
C407
0.33uF
16V
Hotel_Model(RS232C apply)
R421
0
VA419
20V
C421
47pF
50V
JP403
JP411
JP_GND2
VA408
20V
OPT
C401
18pF
50V
OPT
C406
0.33uF
16V
Hotel_Model(RS232C apply)
C403
18pF
50V
OPT
R409
1K
IR_OUT
JP400
JP413
R419
47
+3.3V_ST
R404
0
OPT
C408
0.1uF
16V
Hotel_Model(RS232C apply)
JP427
DSUB_VSYNC
2:E18
R413
10K
VA426
5.5V
OPT
D416
MMBD6100
A2
C
A1
PM_TXD
JP412
C420
47pF
50V
+3.3V_ST
VA402
5.5V
C410
0.01uF
50V
LAN JACK
JP_GND4
R434
47K
JP409
+3.3V_ST
R435
10K
IC401
MAX3232CDR
Hotel_Model(RS232C apply)
3
C
1
-
2
V
+
4
C
2
+
1
C
1
+
6
V
-
5
C
2
-
7
D
O
U
T
2
8
R
I
N
2
9
R
O
U
T
2
1
0
D
I
N
2
1
1
D
I
N
1
1
2
R
O
U
T
1
1
3
R
I
N
1
1
4
D
O
U
T
1
1
5
G
N
D
1
6
V
C
C
R402
75
VA415
20V
R406
0
OPT
R431
0
OPT
JP414
R407
470K
JP_GND1
JP404
DSUB_G+
C400
0.1uF
C404
10uF
10V
OPT
PM_RXD
EPHY_RN
C402
0.33uF
16V
Hotel_Model(RS232C apply)
JP407
USB_OCD
PM_RXD
VA412
20V
R410
0
NON_Hotel_Model(RS232C Bypass)
R447
10K
VA405
5.5V
OPT
Q400
MMBT3904(NXP)
E
B
C
MGJ63348201
M1
JackShield(for NonCKD)
JP406
JP401
R400
75
JK402
3AU04S-305-ZC-(LG)
1
2
3
4
5
PC_L_IN
L403
BLM15BD121SN1 
C409
0.1uF
16V
Hotel_Model(RS232C apply)
EPHY_TN
R415
100
R442
470K
OPT
R414
100
VA407
20V
OPT
R445
15K
USB_CTL
VA420
20V
DSUB_DET
JP410
+3.3V_Normal
VA400
20V
R417
10K
JK401
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
DSUB_R+
MGJ63348202
M1-*1
JackShield(for CKD)
JK400
SPG09-DB-010
1
R
E
D
2
G
R
E
E
N
3
B
L
U
E
4
G
N
D
_
1
5
D
D
C
_
G
N
D
6
R
E
D
_
G
N
D
7
G
R
E
E
N
_
G
N
D
8
B
L
U
E
_
G
N
D
9
N
C
1
0
S
Y
N
C
_
G
N
D
1
1
G
N
D
_
2
1
2
D
D
C
_
D
A
T
A
1
3
H
_
S
Y
N
C
1
4
V
_
S
Y
N
C
1
5
D
D
C
_
C
L
O
C
K
1
6
S
H
I
L
E
D
EPHY_TP
VA404
5.5V
OPT
+5V_USB
VA409
5.5V
OPT
C414
220pF
50V
L402
BLM15BD121SN1 
JP429
R426 0
RGB_DDC_SCL
JP428
PM_TXD
IC400
AP2191DSG
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
R412
0
NON_Hotel_Model(RS232C Bypass)
PC_AUDIO_DET
R411
0
LAN JACK
VA425
20V
C413
220pF
50V
DSUB_HSYNC
2:E18
PC_R_IN
USB_DM
1:AL8
+5V_Normal
VA403
5.5V
RGB_DDC_SDA
EPHY_RP
R401
75
VA410
20V
OPT
+3.3V_Normal
VA417
20V
VA401
20V
R418
47K
R408
10K
JP_GND3
VA406
5.5V
VA411
20V
L401
BLM15BD121SN1 
R403
0
OPT
USB_DP
1:AL7
JP408
P400
12507WS-04L
1
2
3
4
5
C405
0.1uF
R427 0
VA418
20V
VA424
20V
JP405
R420
0
OPT
DSUB_B+
JK403-*1
RJ45VT-01SN002
MAIN(ETHERNET)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
ZD401
5.6B
LAN JACK
ZD400
5.6B
LAN JACK
4     12
To Improve EMI
111026
ESD diode deletion
EAH39491601 2EA
USB(SIDE)
120103
ESD diode addition
EAF61530301 2EA
PC AUDIO(SIDE)
111026
LAN Jack deletion
DSUB RGB
11.10.27
111117
LAN Jack Addition for T2
Jack Shield (HDMI1, HDMI2, RGB)
ETHERNET
To Improve Ringing issue
LOW capacitance Part apply
12.07.02
BY.Hwang
11.10.31
NC4_S7LRM
RS232C(SIDE)
12.08.10
47K->470K
120918
JIG GND Point addition
121128
ESD improve
OPT->APPLY
121128
ESD improve
OPT->APPLY
121128
ESD improve
OPT->APPLY
121128
ESD improve
OPT->APPLY
121128
ESD improve
OPT->APPLY
121128
ESD improve
OPT->APPLY
121128
ESD improve
OPT->APPLY
EAX65077303
2013.1.14
Display
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