Tektronix Phaser 340 Service Manual page 56

Printers serial numbered BC xxxxx and up.
Service Test Print 7 - Printhead diagnostic. This
print is used for manufacturing and engineering
evaluation of printhead performance.
9100-118
Printers serial numbered BC xxxxx and up.
Service Test Print 8 - Solid fills. These seven prints
show uniformity of fill.
Look for: Even, uniform fills throughout each print.
Wrinkles or deformity of the paper itself caused by
the print process show up in blue and green prints at
600 dpi before other colors. A slight amount of
wrinkling in green fills at 600 dpi is normal. But there
should be no wrinkling in 600 dpi blue fills.
Causes: Weak jets or uneven drum heating may
cause uneven fills.
To solve wrinkling, try different print media. Replace
the drum maintenance tray to correct streaking.
Check the drum temperature sensor for debris
build-up on the sensor or the sensor is in improper
contact with the drum. Refer to Test Print 4.
The transfix pressure is incorrect. Replace the
drum/transfix assembly.
9100-119
56 Phaser 340 and 350 Color Printers