Communication troubleshooting
Please follow these suggestions to diagnose remote communication issues.
General troubleshooting
1. Check the following symptoms:
●
The front-panel display does not show the Printing message when an image has been sent
to the printer.
●
The computer displays an error message instead of printing.
●
The computer or printer hangs (stays idle), while communication is taking place.
●
The printed output shows random or inexplicable errors (misplaced lines, partial graphics,
etc.).
2. To solve a communication problem:
●
Ensure that the correct printer has been selected in the application.
●
Ensure that the printer works correctly when printing from other applications.
●
Remember that very large prints may take some time to receive, process, and print.
●
If the printer is connected to a network, check the printer connectivity status: the printer
should have an IP address and it should match the IP address specified in the printing
computer. If the addresses do not match, then configure it correctly; if the issue persists, check
the network configuration or try connecting to the printer by USB cable.
●
Try another interface cable.
●
If the printer is connected by USB cable, try disconnecting and reconnecting the USB cable.
Also try using a different USB port on the computer.
●
If the printer is connected to a wireless network, try moving the printer closer to the wireless
router. Alternatively, try connecting the printer by network or USB cable.
●
If the printer is connected to a wireless network, you can request a diagnostic report from the
front panel: press
, then Settings > Print Wireless Network Test. Alternatively, try
moving the printer closer to the wireless router, or try connecting the printer by wired network
or USB cable.
When a network device automatically configures itself by receiving an IP address from the DHCP
service, this IP address may change from the last time the device is powered off to the next time it
is powered on, which may lead to the device being shown as "offline" when driver port settings
are configured with the original IP address. There are at least three possible ways to avoid this:
●
Increase the lease time of the DHCP server device.
●
Set a fixed IP address for the printer so that it will not change by DHCP.
●
Configure the printer and driver to refer to the hostname instead of the numeric IP address.
66 Chapter 2 Troubleshooting ENWW
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