Table of Contents
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CHAPTER 5
MAINTENANCE PROCEDURE
1. GENERAL
This chapter explains system messages pertaining to the DRU, the procedure of fault diagnosis by loop-back
tests between the NEAX2400 IMS and the DRU, and the fault repair procedure. For other matters, refer to the
NEAX2400 IMS System Maintenance Manual.
2. SYSTEM MESSAGES
System messages are displayed during routine diagnosis, system operation status controlling and fault occur-
rences. This paragraph explains, for each system message related to DRU shown in Table 5-1, the following
items:
•
Meaning
•
Related System Message
•
Example of Printout
•
Message Detail Data
•
Diagnostic from System Message
For those system messages which are not explained in this chapter, refer to NEAX2400 IMS System Mainte-
nance Manual.
Note 1:
Paragraph 2.1: "Technical Terms for Explaining Message Detail Data" explains technical terms used in the ex-
planation.
Note 2:
Paragraph 2.2: "How to Proceed Diagnostic Work from System Message" explains how to perform diagnosis.
Note 1
Note 2
ND-45383 (E)
CHAPTER 5
Page 115
Revision CD 1.0
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