Troubleshooting

Diagnosing LED patterns

Many hardware components of the computer have LEDs that can be used to diagnose problems. This section describes those LED patterns.

Keyboard LED patterns

During POST, LEDs on the keyboard light in patterns that show the progress of the tests and if any failures have been detected. The following table describes these patterns.

Caps

Compose

Scroll

Num

Meaning

lock

 

lock

lock

 

 

 

 

 

 

 

 

 

 

 

Blink

Off

Off

Off

POST in progress

 

 

 

 

 

Off

Off

Off

Off

POST successfully

 

 

 

 

completed

 

 

 

 

 

On

Off

Off

On

System board failed

 

 

 

 

 

On

Off

On

Off

No memory found

 

 

 

 

 

On

On

On

Off

Faulty CPU

 

 

 

 

 

Tape drive LED status patterns

This section describes the LED status patterns for the following tape drives:

●DDS4, 4-millimeter, 20/40-GB

●SLR5, QIC, 4/8-GB

●XL/XS/DX, 8-millimeter, 7/14-GB

DDS4 tape drive – The tape drive LEDs show the following status:

●Tape LED (green) — The LED flashes to show activity (loading, unloading, reading, and writing). The LED is steady when a cartridge is loaded and the tape drive is ready to begin operation.

●Clean LED (amber) — The LED flashes to indicate that a cartridge is near the end of its life, or that the heads need cleaning.

174 Avaya CMS Sun Ultra 5 Computer Hardware Installation, Maintenance, and Troubleshooting

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Avaya 585-215-871 manual Diagnosing LED patterns, Keyboard LED patterns, Tape drive LED status patterns
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585-215-871 specifications

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