Dot Matrix Printer Users Manual

MAINTENANCE
Essentially,your printer is a robust piece of equipment, but should be
treatedwithamodicumofcareinorderto avoidmalfimctions.Forexample:
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Keepyourprinterin a “comfortable”environment.Roughlyspeaking,if
youarecomfortable,thentheenvironmentissuitableforyourprinter,too
(see Chapter1).
Do not subjectthe printerto physicalshocksor excessivevibration.
Avoidextremelydustyenvironments.Dustis theenemyof allprecision
mechanicaldevices.
To clean the exteriorof the printer,use a cloth barely dampenedwith
eitherwaterwithalittledetergentoralittlealcohol,butdonotallowany
liquidto fall insidethe printer.
Theinterioroftheprintermaybecleanedwitha smallvacuumcleaneror
a-compressed-airaerosol(soldfor this purpose).Whenperformingthis
operation,be sure not to bend or damage any cable connectionsor
electroniccomponents.
REPLACING THE PRINT HEAD
Thisisnotajob whichyouwillneedtodoveryoften.Theprintheadhasbeen
designedto last for about 100millioncharactem.In normaleverydayuse,
thistranslatestoyearsoflife.However,iftheprintqualityisfaint,evenafter
youhavechangedtheribbonoryouhaveadjustedthegapbetweentheprint
head andthe platen(see Chapter1),theprinthead willneed replacement.
Onlyuse a replacementprinthead as recommendedby yoursupplier.
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Turn OFFthe printer,andunplugthepowercord.
Removethetop coverand ribboncartridge.
Ifthepnnterhasbeeninoperitionimmediatelybeforethisoperation,the
print head will be hot. Allow time for the print head to cool before
attempingto workon it.
Move the print head carnage toward the right until you can see the
connectorcover.Removethe comector cover andpull the cable free
fromthe connector.
Unscrewthetwo screwsthathold theprintheadin place andset them
aside.