126 Troubleshooting
The USB cable is
connected before
the
driver is installed.
The first printer installed on a PC using a USB
connection must be installed from the driver CD or
downloaded driver.
Remove the driver before re-installing the printer.
For more information on how to remove the driver,
se
e“R
emoving a Printer from a Windows PC”.
The Print Sample Card
button is gray.
The Print Sample Card button in the Printer Properties
is en
able
d when the printer and driver communicate
normally. If the Print Sample Card is gray, check that
the U
SER button on the front of the printer is steady
green and that “Ready” is displayed on the LCD
panel.
The PC USB port does
not communicate
reli
ably
with the printer
USB port.
Power management on the PC
has shut down USB
communication.
Open the Device Manager and the list of USB
devic
es
. Disable shutdown for each hub in the list.
You might need to restart the PC to make the
changes take effect.
Hibernation on a laptop PC requires several moments
to e
nab
le USB communication. Unplug the USB
printer port and then connect it again.
Replace the PC port or the PC. Contact your PC or
por
t ve
ndor if you need assistance.
The printer does not
i
ns
tall or print on the PC
when the PC is
connected to a
network using VPN
Client software.
VPN Client software can prevent
the installation and
use of other devices. Choose one of the following
solutions:
Connect the printer using an Ethernet cable and
foll
ow th
e instructions in “Network Installation using
the Installation CD”.
Disconnect the VPN Client software from the
n
et
work, and then install the USB printer and driver or
resume printing.
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