MiTAC 8355 service manual Memory-Card Socket Failure, Memory Card Test Error

8355 N/B MAINTENANCE

8.12 Memory-Card Socket Failure

Symptom : An error occurs when a memory card device is installed.

Memory Card Test Error

1.Check if the memory CARD device is installed properly.

2.Confirm memory card driver is installed ok.

Board-level

Troubleshooting

Check the following parts for cold solder or one of the following parts on the mother-board may be defective, use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement.

Test	Yes
	Correct it
OK?
No

Try another known good memory card device.

Replace

Motherboard

Parts:

U20 R701

U514 R822

J13 R720

Q20 R706

C347 C727

R28 C354

R118 R56

Signals

PCI_AD[0:31]

C/BE# [0:3]

PCICARDBUS_REQ0# PCI_FRAME# PCI_IRDY# PCI_TRDY#

PCI_DEVSEL#

SD_CD# SD_ WP# SM_CD#

SM_IVD SM_WP# SM_WE# SM_R/B#

SM_ALE

+MSVDD

+SDVDD

Re-test		Yes	Change the faulty
OK?			part then end.
	No

R40 C38 JL505 C353 JL506 JL507

R702

R713

R365

PCI_STOP#

PCIINTB#

PCIRST# PCICARDBUS_GNT0# PCI_SERR#

PCI_CLKRUN#

SM_RE#

SM_CLE SM_CE# SM_WPD# MS_BS MS_SDIO MS_INS#

MS_SCLK

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