FAULT REPAIR PROCEDURES

11.SYSTEM DOWN FAULT

This section explains the fault repair procedure when both the CPU and TSW systems are faulty. Figure 5-22shows the sequence of repair for system down fault.

When cause for the fault cannot be identified: Section 11.1

When faulty circuit cards can be assumed from system message: Section 11.2

Check power supply.

Replace doubtful circuit card with a spare.

Minimize system configuration.

Execute system initialization and see if the mode becomes ON-LINE.

Figure 5-22 System Down Fault Repair Sequence

NDA-24300CHAPTER 5

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NEC NDA-24300 manual System Down Fault Repair Sequence