Installation manual

138 20/10/2004 PS10270JENAA01
Fault diagnosis and troubleshooting
Troubleshooting by fault records
When the alarm has been indicated, maintenance personnel can diagnose the nature of the fault
by the fault message and status display features which are displayed on the operating console,
and restore the fault.
Troubleshooting by lamp indication on circuit cards will be described in the next version.
Trouble-shooting by nature of complaint
When a maintenance person receives a complaint about a problem from a station user or an
attendant, select the appropriate section corresponding to the problem as shown in the figure
below, and trouble-shoot.
• Problems with telephones
- at calling station
- at called station
• M6501L IP PBX telephone fault
• Problems with external lines
- on outgoing calls
- on incoming calls
- on answered calls
Complaint from station user/attendant