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4.6
GENERAL CLEANING AND LUBRICATION
The general cleaning and lubrication procedure should be performed by
qualified service personnel whenever
the printer requires
servicing
or
repairs
which require the cover assemblies to
be
disassembled.
The procedures should
be
performed prior to performing detailed service and repair procedures
as
some malfunctions can be caused by dust, ribbon chaff, paper chaff, residue
build-up, or inadequate lubrication.
A.
Remove the printer covers.
(Refer
to paragraph 4.4.1.)
B.
Visually inspect
the interior of printer for loose wires,
connec-
tors, and
hardware, chaffing of cables, and badly worn
or
damaged
parts.
C.
Remove the Mechanism Assembly
(refer
to paragraph
6.2)
and set
it
to one side.
D.
Using
a
light bristle brush sweep away the paper and dust residue
from the printer base and printed circuit board.
E.
Clean the print head and carriage assembly using
a
light bristle
brush to remove dust and residue.
F.
Gently remove
all dried ink from the front of the print head
using
a soft,
clean, lint-free cloth.
G.
Clean contaminated parts of
the rest of the
mechanism assembly
using
a
freon-moistened lint-free cloth.
Pay particular attention
to the
carriage shafts and the paper roller end-plate bushings.
H.
Clean the carriage guide bars by applying several drops of
lubricating oil to
a soft,
clean lint-free cloth, then moving
the
print head to the left side of printer and lightly rubbing the
guide bars to remove residue build-up.
Move print head to
the
right side of the printer and clean the left side of the guide
bars.
I.
Clean the paper drive roller and the end plate bushings using
a
soft, clean,
lint-free cloth.
Then apply one drop of light
lubricating oil to both paper roller end plate bushings.
Cycle
the
paper roller using the thumbwheels to aid the oil to seep
into the bushings.
J.
Reassemble the printer and continue with service procedures.
After completion of service, clean all external surfaces using
a
mild detergent and
a soft,
clean, lint-free cloth.
4-10
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