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Error
The start-up drive is not in the boot sequence in
configuration.
No operating system installed on the boot drive.
The boot sector on the startup drive is corrupted.
The drive is defective.
Power supply problems
If you suspect a power problem, use the following procedures.
Check/Verify
Check the following for proper installation.
• Power cord
• On/Off switch connector
• On/Off switch power supply connector
• System board power supply connectors
• Microprocessor connection
Check the power cord for continuity.
Check the power-on switch for continuity.
Beep symptoms
Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST.
The following table describes the beep symptoms.
Beep symptom
2 short beeps: common POST error
3 short and 1 long beeps: DRAM memory error
FRU/Action
Check the configuration and ensure that the start-up drive
is in the boot sequence.
Install an operating system on the boot drive.
The drive must be formatted. Do the following:
1. Attempt to back up the data on the failing hard disk
drive.
2. Using the operating system programs, format the
hard disk drive.
Replace the hard disk drive.
FRU/Action
Reseat connectors
Power cord
Power-on switch
FRU/Action
Common POST error code. See the detailed failure
information in "POST error codes" on page 86.
Perform the following actions in order:
1. Make sure that the memory modules are properly
seated in the memory slots.
2. Replace the memory modules.
3. Replace the system board (for trained service
personnel only).
.
Chapter 8
Service checkout and symptom-to-FRU index
85
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