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4.3
OPERATOR TROUBLESHOOTING
Table 4-2 lists some malfunctions which may occur, the probable
causes, and the remedies which
may be performed by
the operator of the equip-
ment.
If the
equipment remains inoperative after performing the remedies
indicated, the equipment should be serviced by qualified service personnel.
Note that
the
warranty
is
voided
if
attempts to repair the printer result
in
further damage.
WARNING
When performing operator trouble-
shooting procedures,
the
POWER ON/OFF
switch must be in the OFF position
and the AC input plug
must
be
dis-
connected
.
High voltages are present
in
some locations within the printer
when
the printer
is
turned OFF.
Table
4-2.
Operator Troubleshooting Chart
TROUBLE
PROBABLE CAUSE
REMEDY
Print too light.
Print head release lever
open
or
partially open.
Rotate print head release
lever
clockwise
to
normal
printing position.
Worn
or
defective ribbon.
Replace ribbon.
Roll Paper/Cut-sheet
paper does not
advance properly.
Pinch roller release lever
in
open position.
Pull pinch roller release
lever forward to closed
position.
Ribbon does not
feed properly.
Ribbon twisted
or im-
properly
loaded.
Check ribbon threading and
correct
as
required.
Ribbon drive rollers not
engaged properly.
Open and release driven
roller.
Rotate driven
roller clockwise to assure
proper movement of ribbon.
Printer completely
inoperative.
AC input plug not
connected.
Paper jam.
Fuse
F1
blown.
Connect AC input connector
to
power source.
Remove power and carefully
clear paper jam.
Check
condition of ribbon before
returning power.
Check
if
"Power On" LED
is
lit by looking
down
through paper exit slot.
If
not
lit,
replace fuse
PI.
4-3
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