AT&T 3.0 manual Carrier Problems, Removing the Faulty Carrier

Carrier Problems

Console Display/Instructions Additional Information PC

4If you need assistance in interpreting the information displayed on the screen, contact your technical support.

Clock Slot xx:

mm/dd/yy hh:00-hh:mm

Admin as:

Active:

synch source:

PPM: xxx

Exit

Carrier Problems

Typical carrier problems include power supply failure, sudden failure of one or more modules, or system problems that cannot be isolated to a specific module. If you find a problem with the carrier, it must be replaced; carriers cannot be repaired in the field.

Removing the Faulty Carrier

1 Remove the control unit housing.

If you need instructions, see “Removing the Control Unit Housing” in Chapter 1.

2 Backup system programming.

If you need instructions, see System Programming and Maintenance (SPM) (for disk backups) or Appendix D, “Backing Upwith a Memory Card.”

3Power down the system by turning off the components listed below, in the order given.

aPower supply on the basic carrier

bPower supply on each expansion carrier

cAuxiliary power units (if present)

4 Unplug the control unit from the AC outlet.

Control Unit Problems 4-85