HP Designjet Z6200 Photo Printer - Manual (Page 143)

Clean the paper-advance sensor window
The paper advance sensor is the very small rectangular window (less than 1 cm² in size and shown in
the following graphic) near the sixth platen roller from the right.
You should clean the paper-advance sensor window every six months, and whenever you experience
print-quality issues.
1. Unload the paper using the front panel procedure. See Unload a roll from the printer on page 37 .
2. Use a clean, absorbent, lint-free cloth, slightly dampened with isopropyl alcohol, to wipe any dust
and loosened ink deposits very gently from the sensor window.
3. Under ambient light, a clean sensor window shows a violet-colored reflection that extends
uniformly across the entire surface. To see this reflection, look closely at the sensor window and
slightly change your viewing angle.
4. Wait 3–4 minutes before reloading the paper to ensure that the alcohol has evaporated
completely.
Lubricate the printhead carriage
The printhead carriage occasionally (about once a year) needs lubrication so that it continues to slide
easily along the slider rod.
1.
To gain access to the carriage, go to the front panel and select the icon, and then select
Replace printheads. The carriage slides to the middle section of the printer.
CAUTION: If the carriage remains in the central part of the printer for more than 7 minutes, it
attempts to return to its home position on the right.
ENWW Clean the paper-advance sensor window 135
Maintain the printer