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Phaser 840/850/860/8200 Color Printer - Service Manual
Color is uneven
This may be due to poor thermal regulation
in the printer, resulting in uneven heating of
the printhead, which in turn results in
uneven ink drop jetting.
Table 3-8 Color is uneven
Step
Question and Actions
1
Clean the wiper blade of the drum maintenance drawer. Inspect the operation
of the drum maintenance cam roller and the left and right cam actuators it
pushes against.
2
Refer to the topic "Evaluating the printhead and cap/wipe/purge system" on
page 3-106. A properly functioning printhead maintenance system is essential
for proper printhead operation.
3
Perform the procedure, "Printhead-to-drum spacing adjustment (Phaser 840
Printer Only)" on page 4-146 and "Transfix roller pressure spring adjustment"
on page 4-154.
4
Replace the printhead.
0388-45
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