Tools for troubleshooting

The section describes the tools that can help you solve problems with your device.

Individual component diagnostics

LED diagnostics

LED, engine, and individual diagnostics can identify and troubleshoot product problems.

Understand lights on the formatter

Three LEDs on the formatter indicate that the product is functioning correctly.

1

2

3

1Connectivity LED

2Heartbeat LED

3HP Jetdirect LEDs

Heartbeat LED

The heartbeat LED provides information about product operation. If a product error occurs, the formatter displays a message on the control-panel display. However, error situations can occur causing the formatter to control panel communication to be interrupted.

NOTE: HP recommends fully troubleshooting the formatter and control panel before replacing either component. Use the hjeartbeat LED to troubleshoot formatter and control panel errors to avoid unnecessarily replacing these components.

246 Chapter 3 Solve problems

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