User Guide

8081
8081
N/B Maintenance
N/B Maintenance
116
8.8 CD-ROM Drive Test Error
An error message is shown when reading data from CD-ROM drive.
CD-ROM Driver
Test Error
One of the following parts or signals on the motherboard may
be defective, use an oscilloscope to check the signals or replace
the parts one at a time and test after each replacement.
Yes
No
Parts: Signals:
Test
OK?
Replace the faulty parts.
1. Try another known good compact disk.
2. Check install for correctly.
Check the CD-ROM drive for
proper installation.
No
Re - Test
OK?
U9
J504
R194
D10
Q528
L20
D509
Q518
R79
R72
Yes
Board-level
Troubleshooting
+5V_CDROM
CD_LED#
SD_D]0:5]
SIDERST#
SDA[0:2]
IRQ15
SDDACK#
SIORDY
SDIOW#
SDDREQ
SDIOR#
SDCS1#
SDCS3#
SIDEDET
End
Replace
Motherboard