Dell Latitude XPi CD Service Manual - Page 29

Beep Codes and Error Messages, POST Beep Codes

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Chapter 3 Beep Codes and Error Messages This chapter describes beep codes and system error messages that can occur during computer start-up or, in the case of some failures, during normal computer operation. The tables in this chapter list faults that can cause a beep code or system error message to occur and the probable causes of the fault in each case. If a faulty computer does not emit beep codes or display system error messages to indicate a failure, use the Dell diagnostics to help isolate the source of the problem. See "Running the Dell Diagnostics" found later in this chapter. POST Beep Codes If the display cannot display error messages during the POST, the computer may emit a series of beeps that identifies the problem or that can help you identify a faulty component or assembly. The following table lists the beep codes that may be generated during POST. Most beep codes indicate a fatal error that requires replacement of the system board or other corrective actions before the computer can operate. Table 3-1. POST Beep Codes Beep Code Error Probable Causes 1-1-3 NVRAM write/read failure BIOS corrupted; system board faulty 1-1-4 ROM BIOS checksum BIOS corrupted; system board failure faulty 1-2-1 Programmable interval System board faulty timer failure 1-2-2 DMA initialization failure System board faulty 1-2-3 DMA page register write/read failure System board faulty 1-3-1 through 2-4-4 Installed memory module(s) not being properly identified or used Memory module improperly seated or system memory controller faulty (system board faulty) Beep Codes and Error Messages 3-1

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Beep Codes and Error Messages
3-1
Chapter 3
Beep Codes and Error Messages
T
his chapter describes beep codes and system error messages that can occur
during computer start-up or, in the case of some failures, during normal com-
puter operation. The tables in this chapter list faults that can cause a beep code
or system error message to occur and the probable causes of the fault in each
case.
If a faulty computer does not emit beep codes or display system error messages
to indicate a failure, use the Dell diagnostics to help isolate the source of the
problem. See “Running the Dell Diagnostics” found later in this chapter.
P
OST Beep Codes
If the display cannot display error messages during the POST, the computer
may emit a series of beeps that identifies the problem or that can help you iden-
tify a faulty component or assembly. The following table lists the beep codes
that may be generated during POST. Most beep codes indicate a fatal error that
requires replacement of the system board or other corrective actions before the
computer can operate.
Table 3-1.
POST Beep Codes
Beep Code
Error
Probable Causes
1-1-3
NVRAM write/read
failure
BIOS corrupted; system board
faulty
1-1-4
ROM BIOS checksum
failure
BIOS corrupted; system board
faulty
1-2-1
Programmable interval
timer failure
System board faulty
1-2-2
DMA initialization
failure
System board faulty
1-2-3
DMA page register
write/read failure
System board faulty
1-3-1
through
2-4-4
Installed memory
module(s) not being
properly identified or
used
Memory module improperly seated
or system memory controller faulty
(system board faulty)