Xerox Phaser 140 用户指南

If the printhead becomes damaged or worn, the print quality deteriorates, as 
evidenced by persistent appearances of irregular or missing dots on prints, 
even after executing printhead cleaning several times.  If this happens, 
replace the printhead with a new one.  To obtain a new printhead, contact 
your dealer or Tektronix and order part number 118-9120-00.

Under normal usage, the printhead may last the life of the printer.  However, 
several factors can shorten the life of the printhead:

■

Dusty or dirty operating conditions.

■

Use of  non-Tektronix inks or inks that have been stored more than 
6 months.

■

Severe paper jams under the printhead.

Open the top cover (with the printer still turned on).

Remove all ink cartridges installed in the printer and store them 
away for later use (see ÒReplacing an ink cartridgeÓ on page 4-2).  
To avoid spilling ink, place the ink cartridges on a clean sheet of 
paper with the numbered label sides facing up.

Close the top cover and perform the ink jet cleaning procedure to 
empty all ink from the ink jets.  See ÒCleaning the ink jetsÓ on 
page 4-10.

Press the POWER button to turn off the printer.

Remove and install the printhead with the printer plugged in and 
the power turned off via the POWER button.  Otherwise, a 
printhead error may occur.