Swecoin TTP 5200, Service Manual

Page: 14 / 52

TTP 52x0 Series Kiosk Printer — Service Manual December 2001 12
3 MAINTENANCE
3.1 Fault finding
In connection with service of the printer system, it is good practice to clean the printer
mechanism in order to remove paper dust and lint from the paper path, cutter and sensor
areas. Paper dust, when accumulated, may interfere with printer functions such as
reflector sensors.
Do not apply oil on the cutter blades since this might smudge the paper.
The printer informs the host of some error symptoms by means of status reports and error
codes. See TTP 5200/5250 Installation Manual.
Symptom Suggested actions
Strange paper feed
behavior. •
Check that the presenter sensor is not affected by excessive
ambient light from above or through the front opening.
Printing does not stop at
paper out. •
Check that the paper-out/TOF sensor is not affected by excessive
ambient light.
Nothing is printed when
you keep the form-feed
button depressed while
switching the printer ON,
but the document is
transported, cut and
ejected. •
Check that the paper roll is turned with the temperature-sensitive
side facing up.
•
Check that the paper meets the paper specification.
*)
•
Check that the ribbon cable connector at the top of the print
module is fully inserted.
Test document can be
produced as described
above, but the printer
works strangely in normal
operation.
•
Check that both ends of the data cable are properly connected.
•
Application program might be incorrect, for example, with respect
to handshaking. Contact system manager.
•
Make a HEX dump printout and check incoming data string. See
page 13.
Printing is interrupted •
Check if printer is out of paper.
•
Check if there is any paper jam.
•
Check that paper dust or pieces of paper do not block the
presenter sensor.
•
Check function of presenter sensor.
•
Check that the printer is properly connected to protective earth.
This is to prevent earth currents between printer and host, but
also to prevent electro-static discharges.
*)
The paper specifications are available in the Technical Specifications.