Gap Detection; Material Transport; Ribbon, Ribbon Guide - Novexx Solutions AP 5.4 Service Manual

02/10 Rev. 5.05-00

Gap detection

Problem
Gap detection not
possible
Print position shifted
in or against print
direction
[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
[Tab. 5] Possible faults caused by the ribbon guiding
SERVICE MANUAL
AP 5.4 – AP 5.6
Possible cause
Photoelectric switch defec-
tive
Photoelectric switches set
incorrectly
False photoelectric switch
selected
Gap position not re-
cognised 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
Solution
SERVICE FUNCTION > Sensor
Check with
necessary replace the photoelectric switch
SYSTEM PARAMETER >
Use parameter
Sens. punch-LS
to alter sensitivity
Select "Punched" or "Reflex" using the para-
SYSTEM PARAMETER > Light sens. type
meter
Correct photoelectric switch zero line using
PRINT PARAMETERS > Punch offset
parameter
Solution
Modify the setting. Instruction see service ma-
nual, topic section Service Mechanics
ter „Material transport", „Setting the friction 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 para-
SERVICE FUNCTIONS > Sensor
meter
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
3
Fault Location
test, if
, chap-
test)