Swecoin TTP 101, Service Manual

Page: 20 / 56

TTP 101 Kiosk Printer Sub-system – Service Manual 0102 20
6. Lower the print head release lever. The printer is now in a HEX dump mode and all
on-line communication will be printed in both HEX and ASCII representation of each
character received.
7. Depress the paper feed button temporarily. This ensures that the last transmitted
characters are printed.
8. Exit from the HEX dump mode by switching the printer OFF. Switch the power ON
again to resume normal on-line operation.
4.2 Fault finding
In connection with service of the printer it is good practice 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 optical sensors.
Do not apply oil on the cutting edges of the cutter module to avoid smudging the paper.
The printer informs the host of some error symptoms by means of status and error codes.
Refer to the Installation Manual.
Symptom Suggested actions
Nothing is printed when you press the paper-
feed button, but the document is transported,
cut and ejected.
•
Check that the paper roll is turned the correct
way with thermal sensitive layer facing up.
•
Check that the paper used meets the paper
specification. See TTP 101 Technical
Specification.
•
Check that the printhead ribbon cable is fully
inserted into the connector at the top of the
connector board and that the connector
locking case is fully pushed in.
Paper jam.
•
Check cutter-home switch.
Printer does not work at all.
•
Check that the paper release lever is lowered
(print head press against the paper).
•
Check that power is supplied to the printer.
•
Check the function of the TOF/paper-out
sensor.
Test document can be produced, but the
printer works strangely in normal operation.
See Section 4.1 for how to print a test
document.
•
Check that both ends of the data cable are
properly connected.
•
Application program might be incorrect, for
example the handshaking procedure. Contact
system manager.
•
Make a HEX dump printout and check
incoming data string. See Section 4.1.2.