Swecoin TTP 5000, Руководство по обслуживанию

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TTP 5000 Series Kiosk Printer Sub-system — Service Manual Edition B, May 97 14
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 edges 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 15.
Printing gets interrupted
•
Check if printer is out of paper.
•
Check if there is any paper jam.
•
Check that the presenter sensor is not
blocked by paper dust or pieces of paper.
•
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.