Error Messages and Codes 3-9
POST Diagnostic Test Descriptions
Test 
Fault 
Type
Fault 
Code Description
SDRAM Hard 1 
This test fails if the boot loader finds no RAM present 
or faulty RAM.
Boot loader posts the message “RAM error” to the 
front panel and blinks the front panel LED and IP 
Board health LED.
Local Bus/ 
Front Panel
Hard 2
Performed during the POST firmware initialization 
phase. 
If the front panel is unplugged, a hard fault is indicated 
by the heath LED.
I/O ASIC Hard 3
This test determines if the I/O chip is functioning 
properly. 
MEM Hard 4
This test determines if the memory access function 
works at selected addresses
Configuration 
Chip
Hard 5
This test checks to see if the configuration chip is 
present. If no chip is present the test fails and the front 
panel message “Please Install configuration chip 
displays.
EEPROM Hard 10
This test checks addressing of the EEPROM.
Ethernet Hard 11
This test checks the ethernet core.
CPU Interrupts Hard 12
This test checks that each interrupt source to the CPU 
is functioning. 
USB Hard 13
This test checks that the USB core is functioning 
properly.
Real Time 
Clock
Soft 14
The real time clock is tested. 
RAM DIMM 
Presence
Soft 15
This test examines bad or incompatible RAM DIMMs.
Min RAM Limits Soft 16
Checks that there is at least 128 MB installed and 
ignores more than 512 MB. 
Max RAM 
Limits
Soft 17
Checks to ensure no more than 1 GB of RAM is 
installed.
IDE Disk Soft 20
Checks the disk controller core, and runs a 
DIAGNOSE command on the hard drive.
CPU Fan Hard 24
Checks hardware to see if a failure of the CPU cooling 
fan has occurred.
Cage Fan Hard 25
Checks hardware to see if a failure of the electronics 
cooling fan has occurred.