Dell Precision T5500 (Early 2009) - Manual (Page 12)

Beep Codes
When errors occur during a boot routine that cannot be reported on the monitor, the computer may emit a beep code that identifies the problem. The beep
code is a pattern of sounds: for example, one beep followed by a second beep, then followed by a burst of three beeps (code 1-1-3) means that the computer
was unable to read the data in nonvolatile random-access memory (NVRAM). If the system loses power and beeps constantly when you turn it back on, the
BIOS is probably corrupted.
S5
1- Off
2- Solid
3- Off
4- Solid
VID Video Card Video subsystem configuration activity in progress or video subsystem failure.
S6
1- Off
2- Solid
3- Solid
4- Off
STO Storage Storage device configuration in progress or storage subsystem failure.
S7
1- Off
2- Solid
3- Solid
4- Solid
USB USB USB subsystem configuration activity in progress or USB subsystem failure.
S8
1- Solid
2- Off
3- Off
4- Off
MEM Memory
Memory subsystem configuration activity is in progress. No memory modules were
detected.
S9
1- Solid
2- Off
3- Off
4- Solid
MBF System board Fatal system board failure detected.
S10
1- Solid
2- Off
3- Solid
4- Off
MEM Memory
Memory subsystem configuration activity is in progress. Memory modules have
been detected but appear to be incompatible or in an invalid configuration.
S11
1- Solid
2- Off
3- Solid
4- Solid
PRV
Other pre-video
activity
Indicates routine system activity preceding video initialization.
S12
1- Solid
2- Solid
3- Off
4- Off
CFG
Resource
configuration
System resource configuration in progress.
S13
1- Solid
2- Solid
3- Off
4- Solid
Reserved
Reserved for future use. This pattern is being considered to indicate the Visual Off
state on the Dimension systems.
S14
1- Solid
2- Solid
3- Solid
4- Off
POV
Other post-video
activity
Indicates routine system activity subsequent to video initialization.
S15
1- Solid
2- Solid
3- Solid
4- Solid
STD Boot hand off
Indicates End of POST process. Lights are normally in this state briefly as POST
completes. Once the hand-off to the OS is done, the lights turn off and transition
to S0e state.
System Beep Codes
Beep
Code
Description
Beep
Code
Description
1-1-2 CPU register test in progress 2-4-3 1st 64 K RAM chip or data line failure - bit E
1-1-3 CMOS read/write test in progress or failure 2-4-4 1st 64 K RAM chip or data line failure - bit F
1-1-4 BIOS ROM checksum in progress or failure 3-1-1 Slave DMA register test in progress or failure
1-2-1 Timer Test in progress or failure 3-1-2 Master DMA register test in progress or failure
1-2-2 DMA initialization in progress or failure 3-1-3 Master IMR test in progress or failure
1-2-3
DMA page register read/write test in
progress or failure
3-1-4 Slave IMR test in progress or failure
1-3-1 RAM refresh verification in progress or failure 3-2-2 Interrupt vector loading in progress
1-3-2 1st 64 K RAM test in progress or failure 3-2-4 Keyboard controller test in progress or failure
1-3-3
1st 64 K RAM chip or data line failure (multi
bit)
3-3-1
CMOS power fail and checksum test in
progress
1-3-4 1st 64 K RAM odd/even logic failure 3-3-2 CMOS Config info validation in progress
1-4-1 1st 64 K RAM address line failure 3-3-3 RTC/Keyboard controller not found
1-4-2 1st 64 K RAM parity test in progress or failure 3-3-4 Screen memory test in progress or failure
1-4-3 Fail-safe timer test in progress 3-4-1 Screen initialization test in progress or failure
1-4-4 Software NMI port test in progress 3-4-2 Screen retrace tests test in progress or failure
2-1-1 1st 64 K RAM chip or data line failure - bit 0 3-4-3 Search for video ROM in progress
2-1-2 1st 64 K RAM chip or data line failure - bit 1 4-2-1 Timer tick interrupt test in progress or failure
2-1-3 1st 64 K RAM chip or data line failure - bit 2 4-2-2 Shutdown test in progress or failure
2-1-4 1st 64 K RAM chip or data line failure - bit 3 4-2-3 Gate A20 failure