笔记本芯片级维修第20课.ppt

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1、第20课T40主板接口电路检修二主要内容：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I/OContorllerHUBICHU20CLKJ6检测信号供电芯片-G_RST_PCI11520VCC3MPCIBUSCardBUSPCMCIA接口ENE1394和USB接口区别内存电路1.25V855PMSMB_DATASMB_CLK2.5VDDR_VREF上拉排阻8.11LANTestErrorAnerroroccurswhenaLANdeviceisinstalled.INT_PIRQE#PCI_REQ1#PCI_

2、DEVSEL#AD[0:31]PCI_FRAME#,PCI_IRDY#,PCI_TRDY#,PCI_STOP#+3VRP318.2K*4PCI_GNT1#,PCI_PAR,CBE#[0:3]R1508.2KR6670AD1894953241C66322PC66222PX50225MHZLANX1LANX2LAN_WAKE112+3V_PC6680.1µPCIRST#4,56JL10+3V147LAN_PCIRST#U11B74AHC08_V114U513LF-H80PRXIN+RXIN-2P16PJRX+PJTX+PJRX-PJTX-16151091

3、411R8175R8475R8375R8275C1381000PPJ7PJ47,84,53612P16J5061041051RJ45LANConnectorL529120Z/100M+LAN_D2.5V+2.5V_DDRU517LANControllerVT6105-LOMP16R62049.987TXD+TXD-108109CSSKDIDO505857541234VCCGND85C7231µ+3V_PU519NM93C46115L528120Z/100M+LAN_A2.5VPCICLK_LANFromU512ClockGeneratorU9I/OC

4、ontrollerHub82801DBMICH4-MP10EECSEESKEEDIEEDOP1643214321+LAN_A2.5VR63249.9R62449.9R61749.9L524PLP3216SL525PLP3216S+2.5V_DDR+LAN_D2.5V+2.5V_DDR+LAN_A2.5VU521PCMCIAControllerR5C551CARD_RI#P18Q508DTC144WKQ506DTC144WKWOL+LAN_D2.5VR7002.243VCCRAMC7210.1µL21120Z/100MR62303,6L522120

5、Z/100MIDSELR1288.2KRP328.2K411311819PCI_PME#R16610KVDD3F5F4F7F6