Users Guide

3-4 Installation and Troubleshooting Guide
POST Beep Codes
If the monitor cannot display errors or problems, during POST the system may emit a
series of beeps, or beep code, that identifies the problem.
Table 3-2. System Beep Codes
Code Cause Corrective Action
1 BIOS checksum failure; the
memory refresh circuitry on the
system board is faulty
Replace the system board. See Chapter 10, “Getting Help,”
for instructions on obtaining technical assistance.
2 Parity error; faulty DIMMs or
defective system board
Replace the DIMMs or system board. See Chapter 8,
“Installing System Board Options,” for more information.
3 Base 128 KB memory failure Replace the first DIMM or system board. See Chapter 8,
“
Installing System Board Options,” for more information.
4 Timer not operational Replace the system board. See Chapter 10, “Getting Help,”
for instructions on obtaining technical assistance.
5 Processor error Replace the microprocessor. See Chapter 8, “Installing
System Board Options,” for more information.
6 8042 - Gate A20 failure Replace the system board. See Chapter 10, “Getting Help,”
for instructions on obtaining technical assistance.
7 Processor exception interrupt
error
Replace the microprocessor. See Chapter 8, “Installing
System Board Options,” for more information.
8 Display memory read-write error Unless your system is connected to monitor, no action is
required.
If a monitor is connected, the video adapter is faulty. See
Chapter 10, “Getting Help,” for instructions on obtaining
technical assistance.
9 ROM checksum error This error usually requires that you replace the BIOS
firmware. See Chapter 10, “
Getting Help,” for instructions on
obtaining technical assistance.
10 CMOS shutdown register
read/write error
Replace the system board. See Chapter 10, “Getting Help,”
for instructions on obtaining technical assistance.
11 Cache memory bad The cache memory test has failed. See Chapter 8,
“Installing System Board Options,” for more information.
NOTE: For the full name of an abbreviation or acronym used in this table, see “Abbreviations and Acronyms.”
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