Xerox Phaser 8400 Service Manual page 210

Printer Control Panel Is Functional, but Printer Won't Print Jobs Sent
from Computer
1.
Computer driver incorrect or improperly installed
a.
Verify printer hardware is functional by sending a test print via the printer
Control Panel.
b. If a test print is properly produced, continue to next steps, focusing on
problems outside the printer (network, Ethernet, or computer driver
configuration issues).
c.
If a test print is not properly produced, the focus of problems within the
printer suggests that the internal settings are corrupt.
d. Use a known functional computer to test printer using the printer's parallel
port or USB port. If test computer successfully prints pages, review the
version of driver, the installation and the settings of the customer's computer.
Note
Using the parallel or USB port eliminates any network complexities
associated with an Ethernet port.
e.
If test computer is unsuccessful, continue with debug.
2.
Customer network or printer's Ethernet port not properly configured.
a.
Please see "Testing Communications Ports" on page 4-82 for procedures
related to communication problems.
3.
Disconnect the printer from its network and see if the behavior continues.
4.
Printer internal settings corrupted.
a.
On the Control Panel, use the Hidden Service Menu to reset NVRAM.
b. Perform full test of printer.
Printer Resets Unexpectedly
1. Transient on AC line tripped reset circuitry in printer.
a. Cycle power to ensure printer initializes during stable AC power.
2.
Internal fault
a.
Record any error codes and report to Xerox Office Group. If the printer
detects an error, the printer will attempt to reboot and re initialize (up to
three times) to correct the problem. After the third cycle of rebooting, an
error code displays on the LCD and flashes on the PS and PE indicators.
3. Disconnect the printer from its network, for a few hours if necessary, to see if the
behavior continures.
4-70 Phaser 8400/8500/8550 Color Printer