HP color laserjet 2550 series Manuale Di Servizio

This problem is caused by either a software or
hardware component.

●

Make sure that your Macintosh supports
USB.

●

Verify that your Macintosh has Mac OS 9.1,
9.2, 9.3, or OS X, v. 10.1 or later.

●

Make sure that your Macintosh has the
appropriate USB software from Apple.

The iMac and Blue G3 desktop Macintosh
systems meet all of the requirements to connect
to a USB device.

●

Make sure that the printer is turned on.

●

Make sure that the USB cable is properly
connected.

●

Make sure that you are using the
appropriate high-speed USB cable.

●

Make sure that not too many USB devices
are drawing power from the chain.
Disconnect all devices from the chain and
connect the cable directly to the USB port
on the host computer.

●

Check to see if more than two non-powered
USB hubs are connected in a row on the
chain. Disconnect all devices from the chain
and connect the cable directly to the USB
port on the host computer.

The iMac keyboard is a non-powered USB hub.

Before working on the carousel, turn off the printer.

Under normal conditions, pressing 

 (Rotate Carousel) brings another print cartridge to

the top position. However, if the carousel does not rotate, then rotate the print-cartridge
carousel manually.

All models of the HP color LaserJet 2550 printer contain a guide that is designed for access
to the carousel brake.

Chapter 6 Troubleshooting

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