Sun Microsystems Blade 1500 Service, Diagnostics, And Troubleshooting Manual page 68

System Sounds at Locations and What They Mean (Continued)
TABLE 3-5
Location
Front of system
chassis
Front or rear of
system chassis
3-14 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
Sound
Upon power on, three
beeps and the system
powers off
Upon power on, four
beeps and the system
powers off
Upon power on, five beeps
and the system powers off
Continuous beeping
Quiet scratching
High-pitched humming
Low shrill sound
Quiet grumbling sound
Silence from fans
Meaning
Invalid configuration.
Memory or CPU does not
match requirements.
FRU ID checksum error.
Internal reset failed.
Keyboard key is stuck or
connection is bad.
hard drive heads are moving.
hard drive bearings are
failing.
Front fan bearing is failing.
Rear fan bearing is failing.
Power supply fan bearing is
failing.
Temperature is such that fans
are barely turning.
Front fan is not spinning.
Rear fan is not spinning.
Power supply fan is not
spinning.
Comment
See "Memory Problem"
on page 4-37 or
"Motherboard
Problem" on page 4-34.
Replace motherboard.
See "Replacing the
Motherboard" on
page 11-43.
See "Motherboard
Problem" on page 4-34.
See "Keyboard
Problem" on page 4-19.
Hard drive is normal.
Replace the hard drive.
See "Replacing a Hard
Drive" on page 12-2.
Replace front fan. See
"Replacing the Front
Fan" on page 13-8.
Replace rear fan. See
"Replacing the Rear
Fan" on page 13-15.
Replace the power
supply. See "Replacing
the Power Supply" on
page 13-2.
Fans are normal.
See "System Fan
Problem" on page 4-9.
See "Power Problem"
on page 4-6.