Read LG 42LV555H (CHASSIS:LA05E) Service Manual online
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.
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.
USB_DP1
1 0 : P 1 4
USB_DM1
1 0 : P 1 5
+5V_USB_1
AE21
100uF
16V
16V
C1402
2.7K
R1423
2.7K
R1463
USB_OCD1 1 0 : P 1 3
47
R1433
+5V_USB_1
AL27
+3.3V
+5V_DEVICE
USB_CTL1
1 0 : P 1 3
10uF
10V
10V
C1400
1K
R1431
0 . 1 u F
C1416
0 . 3 3 u F
C1404
0 . 3 3 u F
C1405
22K
R1406
0 . 1 u F
C1406
+5V_ST
100
R1401
220pF
C1412
100
R1403
0
R1408
BCM_RX
9 : A J 2 5
0 . 1 u F
C1415
100
R1413
UART_SWB
5:AA21
0 . 3 3 u F
C1414
0
R1435
10K
R1436
100
R1442
PTC_TX_BCM
9 : A J 2 2
1K
R1462
220pF
C1413
BCM_TX
9 : A J 2 5
22K
R1457
100
R1455
1K
R1438
10K
R1428
UART_SWA
5:AA21
100
R1426
0
R1425
100
R1424
100
R1419
100
R1418
100
R1414
PTC_RX_5V
I 2 3 ; 5 : X 7
0 . 0 4 7 u F
C1411
+5V_ST
10K
R1432
RS232_TX
T16
RS232_RX
T16
RS232_TX
L16
RS232_RX
L15
100
R1430
100
R1411
100
R1405
100
R1427
TP1403
TP1401
TP1402
0
R1467
0
R1468
5.6V
D1403
5.6V
D1400
SPG09-DB-009
JK1402
1
2
3
4
5
6
7
8
9
10
PTC_RX_BCM_3.3V
9 : A J 2 2
UART3_TX
C 1 6 ; 5 : N 1 5 ; 5 : Y 2 6 ;
5:AH5
UART3_TX
C 2 5 ; 5 : N 1 5 ; 5 : Y 2 6 ;
5:AH5
UART3_RX
I 2 3 ; 5 : N 1 5 ; 5 : Y 2 6 ;
5:AH6
/RESET_BY_CPU
9:AN22
/Uptdate_By_CPU
9 : A J 2 0
RESET_high
5:N27
10K
R1400
Update_SW
5 : L 1 9
47K
R1404
47K
R1402
PTC_TX
5:X7
10K
R1469
10K
R1470
PTC_RX_5V
Q22;5:X7
UART3_RX
L 1 4 ; 5 : N 1 5 ; 5 : Y 2 6 ;
5:AH6
TC4053BFN
IC1402
3
1Z
2
0Y
4
Z-COM
1
1Y
6
INH
5
0Z
7
VEE
8
VSS
9
C
10
B
11
A
12
0X
13
1X
14
X-COM
15
Y-COM
16
VDD
TC4053BFN
IC1401
3
1Z
2
0Y
4
Z-COM
1
1Y
6
INH
5
0Z
7
VEE
8
VSS
9
C
10
B
11
A
12
0X
13
1X
14
X-COM
15
Y-COM
16
VDD
USB DOWN STREAM
3AU04S-305-ZC-(LG)
JK1401
1
2
3
4
5
30V
D1402
30V
D1405
30V
D1409
OPT
MAX3232CDR
IC1403
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
+3.5V_ST
+3.5V_ST
+3.5V_ST
+3.5V_ST
+3.5V_ST
+3.5V_ST
AP2191SG-13
IC1404
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
0 . 1 u F
C1401
MLB-201209-0120P-N2
L1403
2SC3052
Q1403
E
B
C
2SC3052
Q1400
E
B
C
2SC3052
Q1406
E
B
C
2SC3052
Q1405
E
B
C
0 . 1 u F
C1408
EPHY_RXIN1
13:U15
+3.3V
0 . 1 u F
C1410
LAN_ACT0
13:O21
4 9 . 9
1%
1%
R1478
EPHY_TXON1
1 3 : T 1 5
43-10013AD11-1
JK1406
LAN CI
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
LAN_ACT1
13:AM24
510
R1450
4 9 . 9
1%
1%
R1447
LAN_LINK0
13:O21
4 9 . 9
1%
1%
R1444
BLM18PG121SN1D
L1406
0 . 1 u F
C1417
510
R1479
0 . 1 u F
C1418
EPHY_RXIP0
1 3 : S 1 5
43-10013AD11-1
JK1400
LAN CI
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
510
R1480
EPHY_RXIN0
1 3 : S 1 5
4 9 . 9
1%
1%
R1476
A1.8_ETHUB
4 9 . 9
1%
1%
R1448
EPHY_TXOP1
1 3 : T 1 5
4 9 . 9
1%
1%
R1475
EPHY_RXIP1
13:U15
BLM18PG121SN1D
L1405
A1.8_ETHUB
4 9 . 9
1%
1%
R1445
EPHY_TXON0
1 3 : T 1 5
510
R1449
0 . 1 u F
16V
C1420
EPHY_TXOP0
1 3 : S 1 5
4 9 . 9
1%
1%
R1477
0 . 1 u F
C1409
LAN_LINK1
13:AM24
+3.3V
30V
D1415
30V
D1407
30V
D1406
30V
D1414
30V
D1417
30V
D1412
30V
D1418
30V
D1411
30V
D1410
30V
D1416
30V
D1419
30V
D1413
XRJV-01V-D12-180
JK1406-*1
LAN
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
XRJV-01V-D12-180
JK1400-*1
LAN
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
BCM Tolerance
USB JACK
RxD
S e r i a l P o r t
SELECT PTC OR BCM DEBUG
SELECT PTC OAD OR NOT
14
RS232/USB/Lan
T r a c e i m p e d a n c e : 1 0 0 o h m d i f f e r e n c t i a l i m p e d a n c e t o G N D p l a n e
5 m i l s t r a c e w i d t h w i t h 7 m i l s a i r g a p o n P / N p a i r .
A d j a c e n t T X / R X d i f f e r e n t i a l p a i r s s h o u l d b e s e p a r a t e d b y m o r e t h a n
1 5 m i l s t o e a c h o t h e r
18
X
0
X
BCM DEBUG
X
1
0
O b j e c t i v e
PTC USB
COM/MON
1
1
SW_A
1
SW_B
SIMULATION
PTC DEBUG
X
LV555H-UA
2 0 1 0 . 1 2 . 1 0
LAN 1
LAN 2
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