Material Transport; Ribbon, Ribbon Guide; Print Roller - Novexx Solutions AP 4.4 Service Manual

04/09 Rev. 5.01-02
Problem
Print position shifted
in or against print di-
rection
[Tab. 3]Possible faults caused by the gap detection

Material transport

Problem
Material guide (green
part) loosens
No feed function
Jolted print image
Material shifts
[Tab. 4]Possible faults caused by material transport

Ribbon, ribbon guide

Problem
Unfounded ribbon
end message
Ribbon produces
folds
Ribbon is not being
rolled up
Ribbon tears during
printing process
[Tab. 5]Possible faults caused by the ribbon guiding

Print roller

Problem
Wear
[Tab. 6]Possible faults caused by the Print roller
SERVICE MANUAL
AP 4.4 – AP 5.4 – AP 7.t
Possible cause
Gap position not recog-
nised consistently due to
gap contour
Possible cause
Friction is set to low
Stepper motor plug loose
Stepper motor defective
CPU board defective
Feed button defective
Material unwinder blocked
Material guide set
incorrectly
Possible cause
Ribbon unwind mandrel is
not turned
Photoelectric switch defec-
tive
Ribbon guiding plate at the
printhead adjusted incor-
rectly
Ribbon core slips through
Toothed belt defective
Printhead temperature is
too high
Possible cause
High running performance
Printhead pressure too high Check and if necessary correct
Material deposits
Solution
Correct photoelectric switch zero line using
PRINT PARAMETERS > Punch offset
parameter
Solution
Modify the setting. Instruction see service
manual, topic section Service Mechanics
chapter „Material transport", „Setting the fric-
tion of the material guide".
Check and if necessary plug in
Check and if necessary replace motor
Check and if necessary replace mainboard
Check and if necessary replace display board
Check and if necessary loosen
Check and if necessary set
Solution
Fix core to mandrel (spring plate), shift spring
plate if the thread has stripped.
Check and if necessary replace (see also pa-
SERVICE FUNCTIONS > Sensor
rameter
Check and readjust positioning of the guiding
plate
Fix core to mandrel (spring plate), shift spring
plate if the thread has stripped.
Check and if necessary replace the belt
Check setting of print contrast (press Prog.
button in on-line mode or parameter
PRINT PARAMETER > Print
sary correct.
Solution
Replace roller
Clean the roller
Fault Location
,
test)
contrast) and if neces-
3