Paradyne 3611, 3610, 3600 Series manual Troubleshooting and Maintenance, Indicators and Controls

Troubleshooting and Maintenance 3

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Power Module Replacement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Overview

This chapter describes the status indicators on the power module's faceplate, provides troubleshooting guidelines and replacement instructions for the power module, and a preventive maintenance schedule for the optional air filter.

Indicators and Controls

The CO Power Unit detects power module and/or fan failures by monitoring the power output levels and the fan's low-speed sensor for proper operation of the power module. When a failure occurs, an alarm indication light appears on the faceplate of the affected power module.

There are two LED status indicators (Figure 3-1) on the power module's faceplate: the Power LED and the Fan Alarm LED. The Power LED provides the status of the power module. A green light indicates that the power module is operating properly. A red light indicates a power module failure. No light indicates that the CO Power Unit is not receiving input power. The Fan Alarm LED provides the status of the fan in the power module. If the Fan Alarm LED is not lit and the Power LED is green, the fan is operating properly. If the LED is yellow, it indicates either a fan failure or a fan speed below

1900 rpm.

	Power
3000 DC Power Module	Fan Alarm

491-13698

Figure 3-1. LED Status Indicators

3000-A2-GB41-40 May 1998 3-1