HP 3550 - Manual (Page 195)

Printer control panel problems
The following table lists common printer control panel problems and suggested solutions for
resolving them.
Printer control panel problems
Control panel settings work incorrectly
Cause Solution
The printer control panel display is blank, even
when the fan is running. Fans may run while the printer is in Standby
mode (off). Press the printer’s on/off button to
turn the printer on.
Printer settings in the printing software
application or printer driver differ from the printer
control panel settings. Confirm that the settings in the application and
printer driver are appropriate. The application
settings override the printer driver and control
panel settings, and the printer driver settings
override the control panel settings.
Control panel settings were not correctly saved
after they were changed. Reselect the control panel settings, and then
press . An asterisk (*) should appear to the
right of the setting.
The Data indicator light is lit, and there are no
pages printing. Buffered data exists in the printer. Press to
print the buffered data using current control
panel settings and activate the new control panel
settings.
If the printer is on a network, another user may
have changed printer control panel settings. Consult the network administrator to coordinate
changes to printer control panel settings.
Unable to select Tray 3 (optional 500-sheet paper feeder)
Cause Solution
Tray 3 (500-sheet paper feeder) does not appear
as an input tray option on the configuration page
or on the control panel. Tray 3 appears as an option only if it is installed.
Verify correct installation of Tray 3.
Tray 3 does not appear as an option in the
printer driver. Verify that the printer driver configuration
recognizes Tray 3. See the printer driver Help to
set up and configure additional trays.
ENWW Printer control panel problems 183