Conventions Used In The Sheets - Aastra AXD Installation And Maintenance Manual

7.4.1.2

Conventions used in the sheets

• The means (standard tools, etc.) are listed at the beginning of the sheet, but are not
detailed for each operation in the procedure.
• The duration indicated is the approximate time required to perform the procedure;
when the latter refers to another exchange sheet, the times must be added together to
obtain the total time required.
However, the duration does not include the time required for preparing the procedure
(tools, etc.).
• Cable references are not always given in the sheets: to make the connections of the
subassemblies to be installed the operator must refer to the labels attached to the
cables.
• The microswitch configurations of the subassemblies are described in Chapter 4.
7.4.1.3 Guidelines
• Apply all safety instructions (see Section 6.1.1).
• Keep the exchange procedure time to a minimum, in order to minimise operational
(availability) or technical (lack of ventilation, etc.) consequences.
• When refitting a subassembly, check that it is inserted properly, and that the cables are
connected securely.
• Before performing any corrective maintenance operation on a cabinet, it is advisable to
back up the client configuration (see Section 1.3, Document [4]).
AMT/PTD/PBX/0058/4/6/EN
Page 408 01/2011
Installation and Maintenance Manual - Aastra 5000
Maintenance