第 16课：笔记本主板接口电路检修 2

主要内容： PCMCIA 、内存、 USB 、 LAN 电路检修

教学目的：使每个学员掌握各接口电路故障的检修

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8.11 LAN Test ErrorAn error occurs when a LAN device is installed.

INT_PIRQE#

PCI_REQ1#

PCI_DEVSEL#

AD[0:31]

PCI_FRAME#, PCI_IRDY#, PCI_TRDY#, PCI_STOP#

+3V

RP318.2K*4

PCI_GNT1#, PCI_PAR, CBE#[0:3]

R1508.2K

R667 0AD18

94

95 324

1

C66322P

C66222P

X50225MHZ

LANX1

LANX2

LAN_WAKE 112

+3V_P

C6680.1µ

PCIRST# 4,5 6JL10

+3V

147

LAN_PCIRST#

U11B74AHC08_V

114

U513

LF-H80P

RXIN+

RXIN- 2

P16

PJRX+

PJTX+

PJRX-

PJTX-

16

15

10

9

14

11

R8175

R8475

R8375

R8275

C1381000P

PJ7

PJ4

7,8

4,5

3

6

1

2

P16

J506

104

105

1

RJ45 L

AN

Connector

L529120Z/100M

+LAN_D2.5V +2.5V_DDR

U517

LAN

Controller

VT6105-LOM

P16

R62049.9

8

7TXD+

TXD-

108

109

CS

SK

DI

DO

50

58

57

54

1

2

3

4

VCC

GND

8

5

C7231µ

+3V_PU519

NM93C46

115

L528120Z/100M

+LAN_A2.5V

PCICLK_LAN

From U512 Clock Generator

U9

I/O

Controller

Hub

82801DBMICH4-M

P10

EECS

EESK

EEDI

EEDO

P16

43

2 1

43

2 1

+LAN_A2.5V

R63249.9

R62449.9

R61749.9 L524

PLP3216S

L525PLP3216S

+2.5V_DDR +LAN_D2.5V+2.5V_DDR +LAN_A2.5V

U521

PCMCIAController

R5C551

CARD_RI#

P18Q508

DTC144WK

Q506DTC144WK

WOL

+LAN_D2.5V

R7002.2

43VCCRAM

C7210.1µ

L21120Z/100M

R6230

3,6

L522120Z/100M

IDSEL

R1288.2K

RP328.2K

4

113

118

19

PCI_PME#

R16610K

VDD3

F5

F4

F7

F6