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the SCSI bus. See your drive documentation for details on setting
the SCSI ID for your drives.
• If using ATA drives, verify that the master/slave settings are set
correctly. See your drive documentation for details on setting the
master/slave settings.
• If using a RAID configuration with SCSI or SATA drives, make sure
the RAID card is installed correctly.
Bootable CD-ROM Is Not Detected
Check the following:
• Make sure the BIOS is configured to allow the CD-ROM to be the
first bootable device.
LED Information
The Acer Altos G520 includes LEDs that can aid in troubleshooting your
system. A table of these LEDs with a description of their use is listed
below.
LED Name Function Location Color Correction
System
fault
Visible fault
warning
Control
panel and
board rear
left corner
Green or
Amber
•Amber =
critical error or
non-
recoverable
• Amber blink =
non-critical
ATA
activity
Control
panel
Control
panel and
board left
side
Green Blinking =
Activity. No action
required.
Memory
fault 1-6
Identify
failing
memory
module
DIMM end
front of
board
Amber On = Fault
BB!H631!.!FO/cppl!!Qbhf!244!!Uvftebz-!Bvhvtu!28-!3115!!5;13!QN