HP Designjet T7100 Printer series - Manual (Page 207)

Table B-2 Numeric error messages (continued)
Error code Recommendation
77.04 An Embedded Web Server internal software error has occurred. Try the following
remedies:
● Turn off the printer by using the Power button on the front panel and the power
switch at the back of the printer, and then disconnect the power cord—then
reconnect the power cord and turn on the printer.
● Check that your printer firmware is up to date. See Update the printer
firmware on page 144 .
If the problem persists, contact HP Support. See HP Customer Care on page 180 .
81.01, 81.03, 86.01 Open the printer window and make sure that there are no obstacles restricting the
movement of the drive roller. If the paper has jammed and is restricting the
movement of the drive roller, lift the paper load lever and clear the obstruction. If
the problem persists, contact HP Support. See
HP Customer Care on page 180 .
ENWW 199
Error messages