30Chapter 3 Hardware troubleshooting
Description | Information |
| started and the CallPilot diagnostic screen has appeared, then |
| the MPB96 board is defective or the DSP and NTBus drivers |
| do not function properly. |
| • The CTbus FPGA Done LED (the farthest from the card I/O |
| bracket) works in tandem with the DSP FPGA Done LED and |
| turns on and off at the same time. |
RAID controller LEDs | The RAID card has one red LED and eight small LEDs on the back. |
| When the card works properly, the red LED comes briefly on at |
| startup; this indicates that the card was accessed for detection. At |
| the same time, all eight LEDs at the back come on, and then half |
| of them turn off and stay off. Four LEDs lit at the back of the card |
| indicate that the card works properly. If all eight LEDs stay on after |
| startup and boot, the card was not detected or is defective. |
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BIOS beep codes
During the
Error type | Description |
In most cases, these error allow the system to continue the bootup | |
| process. Error messages normally appear on the screen. |
Fatal error | These errors do not allow the system to continue the bootup process. |
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The following table describes the errors communicated by beeps.
Beep | Message | Description |
count |
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1 | Refresh Failure | The memory refresh circuitry of the processor board is |
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| faulty. |
2 | Parity error | A parity error was detected in the base memory (the first |
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| block of 64 kbytes of the system). |
3 | Base 64KB Memory Failure | A memory failure occurred in the first 64 KB of memory. |
4 | Timer Not Operational | A memory failure occurred in the first 64 KB of memory, or |
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| Timer #1 on the processor board failed to function properly |
5 | Processor Error | The CPU on the processor board generated an error. |
6 | 8042 - Gate A20 Failure | The keyboard controller (8042) contains the Gate A20 |
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| switch, which allows the CPU to operate in protected |
|
| mode. This error message means that the BIOS is not |
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| able to switch the CPU in the protected mode. |
Nortel CallPilot
Troubleshooting Reference Guide
5.026 June 2007
