Epson Stylus Pro 4900 User Manual page 139

Epson Stylus Pro 4900/4910
Symptom
The printer is not communicating
with the computer.
You cannot print under the
network environment.
The printer has an error.
User's Guide
Problem Solver
What to do
Is the cable plugged in properly?
Make sure the printer's interface cable is securely plugged into the correct terminal of the
computer and the printer. Also, make sure the cable is not broken nor bent. If you have a
spare cable, try connecting with the spare cable.
Does the interface cable specification match the specifications for the computer?
Make sure the interface cable specifications match the specifications for the printer and
the computer.
"System Requirements" on page 163
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Is the interface cable connected directly to the computer?
If you use a printer switching device or extension cable between the printer and the
computer, you may not able to print depending on the their combinations. Connect the
printer and the computer directly with the interface cable and check if you can print
normally.
When using a USB hub, is it being used correctly?
In the USB specification, daisy-chains of up to five USB hubs are possible. However, we
recommend that you connect the printer to the first hub connected directly to the
computer. Depending on the hub you are using, the operation of the printer may become
unstable. If this should occur, plug the USB cable directly into your computer's USB port.
Is the USB hub recognized correctly?
Make sure the USB hub is recognized correctly on the computer. If the USB hub is
recognized correctly, unplug all of the USB hubs from the computer's USB port, and then
connect the printer's USB interface connector directly to the computer's USB port. Ask the
USB hub manufacturer about USB hub operation.
Are the network settings correct?
Ask your network administrator for the network settings.
Connect the printer directly to the computer using a USB cable, and then try to print.
If you can print via USB, there are some problems on the network environment. Ask your
system administrator, or refer to the manual for your network system. If you cannot print
via USB, see the appropriate section in this User's Guide.
Confirm if errors have occurred in the printer by checking the lights and messages
on the printer's control panel.
"Control panel" on page 13
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"When an Error Message is Displayed" on page 129
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