Anadex DP-9000 - Page 68

TABLE 4-1. TROUBLESHOOTING (Cont'd)
SYMPTO}1 PROBABLE CAUSE AND ACTION
POWER ON and ON LINE is ON
but one or more of the
following faults exist:
Print head jerks back
and forth.
Print head drives all the
way to the right and
stalls.
ON LINE light is flicker-
ing on and off.
SELF TEST does not print
out.
Print head moves properly
for SELF TEST or other
data input but no print-
ing occurs.
Prints correct data but
has missing dots or
random light dots.
Other indications of
serious malfunction.
Correct data is printed but
is very light density.
4-6
Faulty circuit board or print
head or both, or faulty
drive motors. Refer unit
to service center.
Print head gap is incorrect.
Move print head gap adjust-
ment lever forward until
printing is satisfactory or
if all the way forward refer
to service center for head
alignment/replacement.
Ribbon is worn out or faulty.
Replace the ribbon cartridge.