AT&T 3.0 manual Check the Power Supply, Check the Processor, Check the Modules

Maintenance Strategy

Once you receive that information, use any maintenance or system programming feature that may lead to the root of the problem. See “Access Log for Maintenance and System Programming” in Chapter 2 for additional information. See System Programming for information about system programming and the Inspect function.

Check the Power Supply

If the error logs indicate the power supply as the source of the problem, see “Power Supply Problems” in Chapter 4.

Check the Processor

If the error logs indicate the processor as the source of the problem, use the following as a guideline to check the processor.

■Back up system programming.

—System programming can be backed up to a floppy disk, using SPM.

—For Release 3.0, system programming can be backed up to a memory card, and later, using SPM or the MLX-20L console. See Appendix D, “Backing Up with a Memory Card,” for more information.

■See “Processor Problems” in Chapter 4 to troubleshoot the processor.

Check the Modules

If the error logs indicate any modules, see “Module Problems” in Chapter 4.

Check the Control Unit Carrier

Within the control unit, the last possible cause of a problem is the carrier. If the carrier is damaged, it must be replaced. See “Carrier Problems” in Chapter 4 for instructions.

Introduction 1-25