User's Manual

Service Reference Guide, dx5150 361685-001 C–7
POST Error Messages
Red Power LED
flashes nine times,
once every second,
followed by a
two-second pause,
and the computer
beeps nine times.
Beeps stop after
five times but the
Power LED will
continue flashing
until the problem is
resolved.
9 or
None,
depending
on the
issue
System
powers on but
is unable to
boot.
1. Check that the voltage selector,
located on the rear of the power
supply (some models), is set to the
appropriate voltage. Proper voltage
setting depends on your region.
2. Replace the system board.
3. Replace the processor.
Red Power LED
flashes ten times,
once every second,
followed by a
two-second pause,
and the computer
beeps ten times.
Beeps stop after
five times but the
Power LED will
continue flashing
until the problem is
resolved.
10 Bad option
card.
1. Check each graphics card by
removing the card (one at a time if
multiple cards), then power on the
system to see if fault goes away.
2. Once a bad card is identified,
remove and replace the bad option
card.
3. Replace the system board.
Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity Beeps
Possible
Cause Recommended Action