Beep Codes - Dell Precision T3500 Service Manual

Dell Precision™ T3500 Service Manual--LED Codes

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.
Beep
Code
1-1-2 CPU register test in progress
1-1-3 CMOS read/write test in progress or failure
1-1-4 BIOS ROM checksum in progress or failure
1-2-1 Timer Test in progress or failure
1-2-2 DMA initialization in progress or failure
DMA page register read/write test in progress
1-2-3
or failure
1-3-1 RAM refresh verification in progress or failure
1-3-2 1st 64 K RAM test in progress or failure
1st 64 K RAM chip or data line failure (multi
1-3-3
bit)
1-3-4 1st 64 K RAM odd/even logic failure
1-4-1 1st 64 K RAM address line failure
1-4-2 1st 64 K RAM parity test in progress or failure
1-4-3 Fail-safe timer test in progress
1-4-4 Software NMI port test in progress
2-1-1 1st 64 K RAM chip or data line failure - bit 0
2-1-2 1st 64 K RAM chip or data line failure - bit 1
2-1-3 1st 64 K RAM chip or data line failure - bit 2
2-1-4 1st 64 K RAM chip or data line failure - bit 3
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1 - On
2 - On
Possible system resource configuration error.
3 - Off
4 - Off
1 - On
2 - On
Other failure.
3 - On
4 - Off
1 - On
2 - On
End of POST - Hand off to boot.
3 - On
4 - On
1 - Off
2 - Off
The system is in a normal operating condition after POST.
3 - Off
4 - Off
System Beep Codes
Description
Beep
Code
2-4-3 1st 64 K RAM chip or data line failure - bit E
2-4-4 1st 64 K RAM chip or data line failure - bit F
3-1-1 Slave DMA register test in progress or failure
3-1-2 Master DMA register test in progress or failure
3-1-3 Master IMR test in progress or failure
3-1-4 Slave IMR test in progress or failure
3-2-2 Interrupt vector loading in progress
3-2-4 Keyboard controller test in progress or failure
3-3-1 CMOS power fail and checksum test in progress
3-3-2 CMOS Config info validation in progress
3-3-3 RTC/Keyboard controller not found
3-3-4 Screen memory test in progress or failure
3-4-1 Screen initialization test in progress or failure
3-4-2 Screen retrace tests test in progress or failure
3-4-3 Search for video ROM in progress
4-2-1 Timer tick interrupt test in progress or failure
4-2-2 Shutdown test in progress or failure
4-2-3 Gate A20 failure
Description