HP Color LaserJet CP6015 Printer series - Manual (Page 267)

When connected with a USB cable, the product does not appear in the Print Center or Printer Setup Utility after the driver is selected.
Cause Solution
This problem is caused by either a software or a hardware
component. Software troubleshooting
● Check that your Macintosh supports USB.
● Verify that your Macintosh operating system is Mac OS X v10.1
or later.
● Ensure that your Macintosh has the appropriate USB software
from Apple.
Hardware troubleshooting
● Check that the product is turned on.
● Verify that the USB cable is connected correctly.
● Check that you are using the appropriate high-speed USB cable.
● Ensure that you do not have too many USB devices drawing
power from the chain. Disconnect all of the devices from the
chain, and connect the cable directly to the USB port on the host
computer.
● Check to see if more than two nonpowered USB hubs are
connected in a row on the chain. Disconnect all of the devices
from the chain and connect the cable directly to the USB port on
the host computer.
NOTE: The iMac keyboard is a nonpowered USB hub.
Table 12-2 Problems with Mac OS X (continued)
ENWW Solve common Macintosh problems 253