User Guide

8081
8081
N/B Maintenance
N/B Maintenance
125
Re-test
OK?
Test
OK?
PC Card or 1394 Socket Failure
1. Check if the PC Card or 1394 device is
installed properly.
2. Confirm PC Card or 1394 driver is
installed ok.
Yes
No
Yes
No
Change the faulty
part then end.
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.
Parts:
U9
U521
U516
J7
U11
JL503
R714
R734
R151
R718
R716
L25
L24
J511
Try another known good PC
Card or 1394 device.
Correct it
Board-level
Troubleshooting
Signals
PCICLK_CARD
PCIRST#
PCI_REQ2#
PCI_SERR#
PCI_PERR#
PCI_DEVSEL#
PCI_FRAME#
PCI_IRDY#
PCI_TRDY#
PCI_STOP#
PCLKRUN#
PCI_PME#
PCI_GNT2#
PIC_PAR
SERIRQ
SUSB#
AD[0:31]
CBE#[0:3]
VCC5_EN#
VCC3_EN#
VPPD0
VPPD1
TPB-
TPB+
TPA-
TPA+
TPBIAS
8.12 PC Card & 1394 Socket Failure
An error occurs when a PC card or 1394 device is installed.
Replace
Motherboard