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LG 42LP860H Service Manual page 44

Chassis : ld3bf
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Ethernet HUB(RTL8305N-CG)
Ethernet Power
+3.5V_ST
ETNHUB_DVDD33
ETNHUB_AVDD33
Q8400
L8403
L8401
RSR025P03
BLM18PG121SN1D
BLM18PG121SN1D
C8419
C8425
C8401
OPT
0.1uF
22uF
0.1uF
R8405
16V
10V
16V
10K
R8404
10K
+3.5V_ST
R8487
C
10K
Q8401
B
ETNHUB_PWR_ON/OFF
2SC3052
R8486
10K
E
ETNHUB_AVDD33
IC8400
MP20045DQ-LF-Z
EP[GND]
R8407
VIN_1
EN
10K
1
8
C8400
R8408
2.2uF
VIN_2
PG
100K
25V
2
7
VOUT_1
GND
3
6
$0.13
R8409
VOUT_2
FB
10K
4
5
BLM18PG121SN1D
Vout
R2
R8406
C8430
R1
2K
2.2uF
25V
Vout=1.5*(1+R1/R2)
ETNHUB_AVDD33
ETNHUB_DVDD33
C8402
C8405
C8416
C8422
22uF
0.1uF
22uF
0.1uF
10V
10V
ETNHUB_AVDD18
C8404
C8407
C8411
C8418
C8424
C8427
C8432
22uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
10V
ETNHUB_DVDD18
C8403
C8406
C8410
C8417
C8423
22uF
0.1uF
0.1uF
0.1uF
0.1uF
10V
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.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ETNHUB_EPHY_RXIN1
ETNHUB_EPHY_RXIP1
LAN1
ETNHUB_EPHY_TXOP1
ETNHUB_EPHY_TXON1
ETNHUB_EPHY_TXON2
ETNHUB_EPHY_TXOP2
TO PHY Chip
ETNHUB_EPHY_RXIP2
ETNHUB_EPHY_RXIN2
ETNHUB_EPHY_RXIN3
LAN2
ETNHUB_EPHY_RXIP3
ETNHUB_DVDD18
ETNHUB_AVDD18
L8406
L8407
BLM18PG121SN1D
C8438
C8435
0.1uF
22uF
16V
10V
MTK TO RTL matching
C8426
C8429
0.1uF
0.1uF
EPHY_RDP
EPHY_RDN
C8433
C8436
0.1uF
0.1uF
EPHY_TDP
EPHY_TDN
Place Close To RTL8305N
C8440
C8441
SOC
27pF
27pF
50V
50V
X8400
25MHz
R8415 1M
OPT
ETNHUB_AVDD18
ETNHUB_AVDD33
R8424
R8423
1.69K
270
1%
1%
1.96K
AVDD18_1
LED_ACT[0]/BCINDROP
1
36
TXON[1]
LED_ACT[1]/GYSPD100
2
35
THERMAL
TXOP[1]
LED_ACT[2]/P4ANEG
3
34
49
RXIP[1]
P4FLCTRL/CPU_INTT
4
33
IC8401
RXIN[1]
RESET
5
32
AVDD18_2
DVDD18_4
RTL8305N_REALTEK
6
31
RXIN[2]
LED_ACT[3]/EN48PASS1
7
30
RXIP[2]
DEV_RTL8305N
LED_ACT[4]
8
29
TXOP[2]
DVDD33
9
28
TXON[2]
SDA_MDIO
10
27
TXON[3]
SCL_MDC
11
26
TXOP[3]
ENEEPROM
12
25
R8436
Differential 100 ohm
No Via
Close to
LAN2
L8404-*1
PHY TO RTL matching
UBW2012-121F
ETNHUB_AVDD18
SHENCHEN_NEW
L8404-*2
SS_OLD
MLB-201209-0120P-N2
CIS21J121
L8404
MAG_NEW
ETNHUB_EPHY_TXOP0
C8412
R8411
0.1uF
49.9
TR0P
1%
C8420
R8412
0.1uF
49.9
1%
ETNHUB_EPHY_TXON0
C8413
0.1uF
TR0N
ETNHUB_EPHY_RXIP0
C8414
R8413
0.1uF
49.9
TR1P
1%
C8421
R8414
0.1uF
49.9
1%
ETNHUB_EPHY_RXIN0
C8415
0.1uF
TR1N
Place close to chip
Place to center position between two chips
STRAPPING PIN CONFIG
ETNHUB_ENDEFER
ETHERNET_RESET
ETNHUB_DVDD18
Place Close To RTL8305N
ETNHUB_DVDD33
LAN_ACT0
GYSPD
LAN_ACT2
R8440
100
ETNHUB_INT
Realtek WOL
ETHERNET_RESET
LAN_ACT3
LED_ACT[2]/P4ANEG : Auto-negotiation Enable/Disable
R8434
33
ETHERNET_MDIO
R8435
33
ETHERNET_MDC
1K
L8408-*1
UBW2012-121F
ETNHUB_AVDD18
SHENCHEN_NEW
L8408-*2
MLB-201209-0120P-N2
L8408
CIS21J121
MAG_NEW
SS_OLD
ETNHUB_EPHY_TXOP2
C8442
0.1uF
R8416
49.9
C8446
R8417
49.9
0.1uF
ETNHUB_EPHY_TXON2
C8443
0.1uF
ETNHUB_EPHY_RXIP2
C8444
R8418
0.1uF
49.9
C8447
R8419
0.1uF
49.9
ETNHUB_EPHY_RXIN2
C8445
0.1uF
Place close to chip
Place to center position between two chips
xxLP860H-ZA
Ethernet Hub
ETNHUB_DVDD33
LAN_ACT0
LAN_ACT2
LAN_ACT3
GYSPD
All Strapping Pins are internal pull-up
ETNHUB_DVDD33
R8458
R8465
1.5K
1.5K
ETHERNET_MDC
ETHERNET_MDIO
2012.12.10
84
LGE Internal Use Only

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