Poor Primary Color Fills - Xerox Phaser 840 Service Manual

Poor primary color fills

Table 3-14 Poor primary color fills
Step Question and Actions
Possible missing, weak or contaminated jet.
1
Print the service test print Weak/Missing Jet to determine if a jet is not
performing.
Verify the drum temperature using diagnostics. Ensure the drum temperature
2
sensor is cleaned and properly positioned.
Head-to-drum gap is too small. Verify the gap with the adjustment explained in
3
the topic "Printhead-to-drum spacing adjustment (Phaser 840 Printer Only)" on
page 4-146.
Verify the operation of the Y-axis encoder using diagnostics. Replace the
4
encoder if needed.
Refer to the topic "Evaluating the printhead and cap/wipe/purge system" on
5
page 3-106. A properly functioning printhead maintenance system is essential
for proper printhead operation.
If the problem persists, replace the printhead.
6
3 - 96
Phaser 840/850/860/8200 Color Printer - Service Manual
Primary fills appear banded and
inconsistent.
0388-47