Nortel Networks DCT1900 manual Fault Codes, Comment to the Table

Technical Product Manual - DCT1900

Maintenance, Service Messages

4.3Fault Codes

Table 4-1 shows all fault reports that may appear in the service table.

Comment to the Table

zColumn 1 - Fault numbers in sequence

zColumn 2 - Service class:

-Class 1

Faults in this class mean that communication with a board or peripheral is lost. In most cases there is a physical reason. Check on proper connection. Execute a Reset Board by the System manager–Controlmenu and check that the fault disappears. If not successful, proceed to class 3.

-Class 2

Faults in this class can be minor faults that can be cleared by a board reset. Execute a Reset Board by the System Manager–Controlmenu and check that the fault disappears. If not successful, proceed to class 3.

-Class 3

Faults in this class are in most cases fatal errors that require board replacement. It is recommended that you ensure that the fault is a hard fault by executing a Reset Board and checking if the fault disappears. If not successful, execute the Replace Board command from the System Manager–Controlmenu and replace the board with a spare board. The new board is automatically tested and taken into service. If the fault persists, call your local supplier for service.

zColumn 3 - Fault threshold

This column indicates the number of times a fault may occur intermittently. This means that after detection of the fault, the fault does not reappear when tested, see Paragraph 2.2. If this intermittent occurrence exceeds its threshold number within 24 hours, a status code S (service) will be written in the fault table, a fault report is written in the service table, and the general alarm is activated. The counter values are halved every 24 hours. Threshold value 99 is equivalent to infinite.

zColumn 4 - Fault description

This column gives a brief description of the fault. In Paragraph 4.3.1 comments are given for some fault codes.

4-2	Maint-DCT1900/R8/mw
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