AT&T DEFINITY 555-230-223 - Manual (Page 128)

Maintenance
Maintenance Login Procedure
This is not a procedure. Please supply. If you cannot log in, first check
terminal power, connections, settings, and modem speed if you are connected
via a modem. If the modem appears to be locked up, type * @ ; this may fix the
remote access problem. If you still cannot reach the DEFINITY LAN Gateway
system, call the switch administrator. Is the switch working? Can the
administrator call into the system? A technician may have to be dispatched to the
site.
Maintenance Procedures
Replacing the Circuit Packs
Refer to Figure 4-5 and follow the steps listed below to replace the MFB or Alarm
Board.
Retaining
Slotted Screw
I2C Bus Cable
Mounting Bracket Spring Clip
Gang Latches
Slotted Screws
Pins
Figure 4-5. Top View of DEFINITY LAN Gateway System
!
WARNING:
Static electricity can be destructive to system parts. Use an anti-static wrist
strap whenever removing or installing a DEFINITY AUDIX system. Also use
an anti-static mat when taking the system apart to replace circuit packs or
storage devices.
1. Ensure that the customer knows you will be powering down the system
and disrupting service.
2. If it is not already shut down, bring the system to the MSHUT state.
(From the Main Menu, select Maintenance, Reset System, and then
Shutdown.)
Issue 1 January 1996 4-13