HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 277)

Understand lights on the formatter
Three LEDs on the formatter indicate that the MFP is functioning correctly.
1 Heartbeat LED
2 HP Jetdirect LEDs (This LED exists only if HP Jetdirect is installed.)
HP Jetdirect LEDs
The embedded HP Jetdirect print server has two LEDs. The yellow LED indicates network activity, and
the green LED indicates the link status. A blinking yellow LED indicates network traffic. If the green LED
is off, a link has failed.
For link failures, check all of the network cable connections. In addition, you can try to manually configure
the link settings on the embedded print server by using the MFP control-panel menus.
1. Scroll to and touch Administration .
2. Touch Initial Setup .
3. Touch Networking and I/O .
4. Touch Embedded Jetdirect or EIO <X> Jetdirect .
5. Touch Link Speed .
6. Select the appropriate link speed.
7. Touch Save .
Heartbeat LED
The heartbeat LED indicates that the formatter is functioning correctly. While the MFP is initializing after
you turn it on, the LED blinks rapidly, and then turns off. When the MFP has finished the initialization
sequence, the heartbeat LED pulses on and off.
ENWW Understand lights on the formatter 261