HP LaserJet 9000 Printer series - Manual (Page 158)

7 Problem solving 158
Correcting output quality problems
Paper size adjustment and
installation. See the introduce guide on the product CD, or go to www.hp.com/suppor t/lj9000 .
Product does not recognize the
duplex printing accessory. z Print a configuration page to ensure that the duplex printing accessory is installed
properly (See
“Configuration page” on page 169 ).
z Turn the product off. Remove and reinstall the unit. Turn the product on.
z Make sure that the duplex printing accessory has been configured in the driver.
Product does not recognize the
hard disk. Turn the product off and verify that the hard disk is inserted correctly and is securely
fastened.
Product does not recognize
Tray 4. z Make sure you selected Tray 4 in the driver (See “Helpful software for increased
flexibility” on page 14 ).
z Turn the product off and then back on.
z Make sure the power cord is plugged into Tray 4 (See “Cabling configurations” on
page 163 ).
z If the product still does not recognize Tray 4, contact your dealer or authorized
HP service provider.
Product does not recognize
stapler. Check the cable to the stapler. Make sure it is properly connected at both ends (See
“Cabling configurations” on page 163 ).
Situation Solution