Technical data

LED Indicators

14-Slot Shelf

Chapter 2

Troubleshooting the Shelf Alarm Panel

The Shelf Alarm Panel is a pass-through device with no logical circuits. Problems with the SAP are generally

mechanical damage to the Telco Alarm Connector or the connector between the Shelf Alarm Panel and the

Horizontal Board.

Alarm Connector Panel Horizontal Board Connector

Figure 2-8 and Table 2-9 show the Alarm Connector Panel (ACP) Horizontal Board Connector and the pin

assignments.

Figure 2-8 Alarm Connector Panel Horizontal Board Connector

Table 2-8 Shelf Alarm Panel Troubleshooting

Tip Symptom Action

1 Communicat

ion problems

to the Shelf

thorough the

SAP

connector

1. Check Shelf Alarm Panel for proper seating and verify that the

fixing screws are tight.

2. Examine the Telco Alarm Connector for bent or broken pins. If

pins are bent or damaged, replace the Shelf Alarm Panel

Assembly.

3. Remove the Shelf Alarm Panel and examine the Shelf Alarm

Display's Horizontal Board connector for bent or broken pins. If

bent or damaged pins are discovered, replace the Shelf Alarm

Panel Assembly.

4. Examine the Shelf Alarm Panel mating connector on the

Horizontal Board for bent or broken pins. If pins are bent or

damaged, replace the Chassis.

5. Replace the Shelf Alarm Panel.

Table 2-9 Alarm Connector Panel Horizontal Board Connector Pin Assignment

Pin Signal Name Description

1 LED_USER1 Signal to User Definable LED1 on Shelf Alarm Display

2 LED_USER2 Signal to User Definable LED2 on Shelf Alarm Display