Service manual

20 TTPM3 - Service Manual March 2009
4 MAINTENANCE
WARNING!
DANGER OF INJURY! Depending on the position of the crank mechanism in the
cutter module, the cutting knife may start moving when the printer is switched ON.
KEEP HANDS AWAY!
CAUTION!
The power supply should be switched off before you disconnect or connect any
other cable on the control board. The printer electronics might otherwise be
damaged.
CAUTION!
The printhead and some components on the control board are sensitive to ESD
(electrostatic discharges). To prevent damaging such components, observe all the
usual precautions such as keeping the part in its original packing (“ESD-bag”) until
you are ready to install the part. Do not touch its pins. Use a grounded wrist strap
when handling ESD-sensitive components.
4.1 Preventive maintenance
Clean the paper path and document sensors from dust and paper particles at
regular intervals. The operator usually does this.
Clean rubber feed rollers, and feed belts, pressure rollers, printhead, and
read/write heads with isopropyl alcohol when necessary.
Clean the sensors with compressed air (available on spray cans).
CAUTION!
NEVER use petroleum based cleaning agents. The rubber platens and rollers will
be destroyed.
Oil the bearings and the cutting mechanism sparingly with Dexron II oil or similar
when necessary. Apply grease on hubs, camwheels etc. according to the
illustration on the next page.