Service manual

REV.-A
Problem
Ribbon feed
abnormality.
The paper gets
stained with ink.
DETECTOR, PE
malfunction.
Table 5-6. Repairing the Printer Mechanism (Continued)
symptom
The ribbon does
not feed.
The ribbon feeds
properly only when
the carriage moves
in one direction
(Ief
or right).
The surface of the
pape in the
printable area is
stained with ink.
The printer does
not stop printing
after it reaches the
paper end, or it
prints when no
paper is loaded, or
it ejects paper
when you press
PAPER FEED
button to load
paper.
Cause
The ribbon
cartridge is
defective.
Foreign substances
are caught in the
gears.
The planetary gear
is defective.
The ribbon mask is
not positioned
correctly.
The platen gap is
not adjusted
correctly.
The DETECTOR, PE
is defective.
Checkpoint
Remove the ribbon
cartridge. Then
rotate the ribbon
feed roller
manually to check
that the ribbon
cartridge feeds the
ribbon normally.
Check that the
ribbon driving gear
rotates properly
when the carriage
is moved manually.
Manually move the
carriage and check
that the planetary
gear functions
normally.
. .
Check that the
ribbon mask is in
the correct
position.
Set the LEVER, G,
ADJUST to O and
check the gap
between the
printhead and the
platen. The correct
gap is 0.36-0.40
mm.
Check the
DETECTOR, PE.
Solution
Replace the
ribbon cartridge.
Remove any
foreigl
substances or
replace the ribbon
cartridge.
Replace the ribbon
cartridge
mechanism.
Reinstall the ribbon
mask.
Adjust the gap as
described in
“Platen Gap
Adjustment” in
Chapter 4.
Replace the
DETECTOR, PE.
5-20