User's Manual

CHAPTER 5 NDA-24300
Page 364
Issue 1
FAULT REPAIR PROCEDURES
7. ALARM INDICATION FAULT
This section explains the fault repair procedure where any of the faults shown in Table 5-9 occur.
7.1 Check Point
When repairing an alarm indication fault, check the alarm cable route shown in Figure 5-11 and Figure 5-
12.
7.2 Fault of Alarm Indicating Panel
Table 5-9 Alarm Indication Fault Situation
FAULTY SITUATION REFERENCE SECTION
A fault is indicated on the TOPU, but it is not indicated on the Alarm Indicating Panel
(External Alarm Indicating Panel).
Section 7.2, Fault of Alarm
Indicating Panel
• A system message is indicated, but no alarm indication is made on the TOPU.
• An alarm lamp on the circuit card is lighting, but no alarm indication is made on the MAT
or on the TOPU.
Section 7.3, Fault That
Cannot Be Detected
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
Confirm lamps and power supply circuit of the Alarm Indicating Panel.
Confirm cross connections on the MDF.
Confirm that the connector of 16 PH EXALM CA is firmly plugged in the EXALM connector on
the backplane of LPR.
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