Read LG 42LP860H (CHASSIS:LD33B) Service Manual online
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.
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.
C8416
22uF
10V
22uF
10V
ETHERNET_RESET
C8420
0.1uF
R8455
1K
OPT
ETNHUB_AVDD18
C8415
0.1uF
0.1uF
ETNHUB_EPHY_TXON3
R8443
1K
OPT
ETNHUB_DVDD33
C8446
0.1uF
EPHY_TDP
C8440-*1
18pF
50V
Xtal_Old
ETNHUB_EPHY_RXIP0
ETHERNET_MDC
R8444
1K
OPT
R8411
49.9
1%
49.9
1%
ETNHUB_EPHY_TXON1
C8418
0.1uF
0.1uF
ETNHUB_AVDD18
ETNHUB_EPHY_RXIN2
C8401
0.1uF
16V
0.1uF
16V
ETNHUB_DVDD33
Q8400
RSR025P03
RSR025P03
S
D
G
R8406
2K
2K
C8438
22uF
10V
22uF
10V
C8435
0.1uF
16V
0.1uF
16V
LAN_ACT3
ETHERNET_RESET
C8419
0.1uF
16V
16V
R8415
1M
OPT
ETNHUB_EPHY_TXOP0
C8423
0.1uF
0.1uF
C8429
0.1uF
0.1uF
ETNHUB_EPHY_RXIN0
ETNHUB_EPHY_RXIP2
R8445
1K
OPT
ETNHUB_AVDD18
R8412
49.9
1%
49.9
1%
C8410
0.1uF
0.1uF
R8435
33
L8404
CIS21J121
SS_OLD
R8487
10K
10K
LAN_ACT2
C8426
0.1uF
0.1uF
R8413
49.9
1%
49.9
1%
ETNHUB_ENDEFER
C8433
0.1uF
0.1uF
R8409
10K
10K
C8402
22uF
10V
22uF
10V
L8407
BLM18PG121SN1D
R8414
49.9
1%
49.9
1%
C8436
0.1uF
0.1uF
ETHERNET_MDIO
R8424
1.69K
1%
TR1N
R8465
1.5K
1.5K
ETNHUB_EPHY_TXOP2
ETHERNET_MDIO
ETNHUB_EPHY_RXIN3
R8423
270
1%
LAN_ACT3
C8404
22uF
10V
22uF
10V
ETNHUB_EPHY_RXIP1
C8424
0.1uF
0.1uF
ETNHUB_EPHY_RXIN2
C8441-*1
18pF
50V
Xtal_Old
Q8401
2SC3052
E
B
C
C8412
0.1uF
0.1uF
ETNHUB_EPHY_TXON2
C8444
0.1uF
0.1uF
R8417
49.9
49.9
C8406
0.1uF
0.1uF
C8422
0.1uF
0.1uF
TR0P
ETNHUB_DVDD33
R8407
10K
10K
R8434
33
C8425
22uF
10V
22uF
10V
ETNHUB_DVDD18
GYSPD
R8404
10K
10K
R8451
1K
OPT
R8440
100
Realtek WOL
C8441
27pF
50V
27pF
50V
Xtal_matching
R8486
10K
EPHY_RDN
ETNHUB_EPHY_RXIN1
ETNHUB_EPHY_TXOP1
C8421
0.1uF
0.1uF
ETNHUB_INT
ETNHUB_DVDD33
C8411
0.1uF
0.1uF
C8405
0.1uF
0.1uF
ETNHUB_DVDD18
ETNHUB_EPHY_TXOP2
ETNHUB_EPHY_TXOP3
ETNHUB_EPHY_TXON2
LAN_ACT0
R8436
1K
L8403
BLM18PG121SN1D
+3.5V_ST
ETHERNET_MDC
R8449
1K
OPT
R8408
100K
100K
ETNHUB_PWR_ON/OFF
C8407
0.1uF
0.1uF
R8450
1K
OPT
C8440
27pF
50V
27pF
50V
Xtal_matching
C8403
22uF
10V
22uF
10V
R8405
10K
10K
OPT
TR1P
C8430
2.2uF
25V
2.2uF
25V
R8458
1.5K
GYSPD
R8416
49.9
49.9
ETNHUB_AVDD18
ETNHUB_AVDD33
R8419
49.9
49.9
C8417
0.1uF
0.1uF
EPHY_TDN
ETNHUB_EPHY_TXOP0
R8448
1K
OPT
C8414
0.1uF
0.1uF
R8446
1K
OPT
C8445
0.1uF
0.1uF
TR0N
ETNHUB_EPHY_TXON0
+3.5V_ST
R8456
1K
OPT
ETNHUB_EPHY_TXON0
ETNHUB_EPHY_RXIP2
LAN_ACT2
ETNHUB_AVDD33
X8400
25MHz
C8443
0.1uF
0.1uF
L8408
CIS21J121
SS_OLD
ETNHUB_DVDD18
C8447
0.1uF
0.1uF
IC8400
MP20045DQ-LF-Z
3
VOUT_1
2
VIN_2
4
VOUT_2
1
VIN_1
5
FB
6
GND
7
PG
8
EN
9
EP[GND]
C8432
0.1uF
0.1uF
C8427
0.1uF
0.1uF
ETNHUB_DVDD33
C8400
2.2uF
25V
2.2uF
25V
C8413
0.1uF
0.1uF
LAN_ACT0
R8454
1K
OPT
ETNHUB_EPHY_RXIP0
R8447
1K
OPT
ETNHUB_EPHY_RXIN0
ETNHUB_EPHY_RXIP3
ETNHUB_AVDD18
ETNHUB_ENDEFER
C8442
0.1uF
0.1uF
ETNHUB_AVDD33
R8418
49.9
49.9
ETNHUB_AVDD33
EPHY_RDP
L8406
BLM18PG121SN1D
L8404-*2
MLB-201209-0120P-N2
MAG_NEW
L8404-*1
UBW2012-121F
SHENCHEN_NEW
L8408-*1
UBW2012-121F
SHENCHEN_NEW
L8408-*2
MLB-201209-0120P-N2
MAG_NEW
L8401
BLM18PG121SN1D
R8427
Realtek WOL
22
IC8401
RTL8305N_REALTEK
DEV_RTL8305N
1
AVDD18_1
2
TXON[1]
3
TXOP[1]
4
RXIP[1]
5
RXIN[1]
6
AVDD18_2
7
RXIN[2]
8
RXIP[2]
9
TXOP[2]
10
TXON[2]
11
TXON[3]
12
TXOP[3]
13
RXIP[3]
14
RXIN[3]
15
TXOP[4]
16
TXON[4]
17
AVDD18_3
18
DVDD18_1
19
RXIP[4]
20
RXIN[4]
21
AVDD18_4
22
DVDD18_2
23
DVDD18_3
24
LDIND/DISLD
25
ENEEPROM
26
SCL_MDC
27
SDA_MDIO
28
DVDD33
29
LED_ACT[4]
30
LED_ACT[3]/EN48PASS1
31
DVDD18_4
32
RESET
33
P4FLCTRL/CPU_INTT
34
LED_ACT[2]/P4ANEG
35
LED_ACT[1]/GYSPD100
36
LED_ACT[0]/BCINDROP
37
OSCI
38
AVDD33
39
AVDD18_5
40
X1
41
X2
42
VCTRL
43
IBREF
44
AVDD18_6
45
RXIN[0]
46
RXIP[0]
47
TXOP[0]
48
TXON[0]
49
[EP]GND
2012.12.10
xxLP860H-ZA
84
Ethernet Hub
Place Close To RTL8305N
$0.13
SOC
MTK TO RTL matching
1.96K
Place to center position between two chips
TO PHY Chip
Place close to chip
Ethernet Power
LED_ACT[2]/P4ANEG : Auto-negotiation Enable/Disable
Ethernet HUB(RTL8305N-CG)
R1
LAN2
LAN2
STRAPPING PIN CONFIG
PHY TO RTL matching
Vout=1.5*(1+R1/R2)
R2
Place close to chip
All Strapping Pins are internal pull-up
LAN1
Place to center position between two chips
Vout
Place Close To RTL8305N
Differential 100 ohm
No Via
Close to
No Via
Close to
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