Service manual
32
4.2. General errors
In case of error you should generally check, if all fuses are in order, see chapter 2.4.
error
possible causes
how to solve the problem
wrong contrast adjustment
adjust contrast in menu item
"Printer parameters"
print head or pressure roll
sticky / dirty
clean with methylated spirits or
use cleaning foil
(cleaning of printhead not with
spirit)
(for Kyocera print heads only)
order-no.: 97.14.008
print head defective, pressure
roll is run in
exchange defective parts,
see chapter "3.1." and "3.3."
driver module defective
exchange U24
various dots are missing
exchange print head
bad or wrong print
print head is badly adjusted
see chapter "3.2. Adjustment of
print head"
irregular print
pressure finger in wrong
position
relocate finger as long as print is
regular
no print
incorrect voltage supply
driver module defective
measure voltage of print head,
eliminate error
exchange U24
RS232:
exchange U37
interface module defective
Centronics:
exchange U43 or /
and U36
wrong interface protocol
adjustment
correct interface protocol
wrong "Baudrate" adjustment
check adjustment of Baudrate
(sender and receiver have to be
adjusted the same)
no data
transmission
interface cable (external)
defective res. wrong
check cable
Memory-Card will
not be read / does
not snap in
snap fastener at plug-in
defective
exchange Memory-Card board
order-no.: 70.25.030
no data onto
Memory-Card
battery empty
exchange battery
order-no.: 27.02.002