Service manual

22 TTPM3 - Service Manual March 2009
4.2 Fault finding
The TTPM3 informs the host of some error symptoms by means of status reports
and error codes (if not disabled with parameter n6). The indicators on the control
panel indicate errors requiring assistance of the operator. Both parameter settings
and error codes are described in the TTPM3 Technical Manual
Below follow some hints on other error symptoms and how to act upon them:
SYMPTOM
Varying space between lateral dot lines as a result of irregular paper feed.
ACTION
Check that the output module is fully seated in the basic module and that the gear
wheel of the output module is in mesh with the gear wheel of the basic module.
SYMPTOM
No cutting, bad cutting, uneven cut edges, etc.
ACTION
Remove any obstructing paper particles in the cutting mechanism.
Check that the cutting motor and home position sensor connectors are
fully seated on the control board.
SYMPTOM
Magnetic stripe encoding and decoding errors.
ACTION
Clean R/W heads, feed rollers, and O-rings with isopropyl alcohol.
Check that the input module is fully seated in the basic module and that
the gear wheel of the output module is in mesh with the gear wheel of the
basic module.
Check that the feed rollers are properly adjusted.
Check the connections to the control board.
SYMPTOM
Ticket backs out of the input
module when it should not.
ACTION
Check sensor levels
Clean sensors
Verify that preprint
does not disturb
sensor by loading a
white ticket and measure levels.