Problem
DOUBLE DETECT
Machine stops for 'doubles' that aren't there or feeds 'doubles'
without stopping
Double.Detect.is.
not.turned.ON.
Material.does.not.
meet.specifications.
for.Double.Detect.
Double.Detect.
is.not.correctly.
calibrated.
Material.is.too.
densely.printed.on.
the.leading.edge.of.
the.material.
Adjusting Double Detect Position
If.you.continually.get.doubles.detected.when.no.doubles.exist,.it.may.
be.that.the.machine's.Double.Detect.sensors.are.being.confused.by.
densely.printed.areas.on.the.sheets.
The.sensors.detect.along.the.centre.line.of.the.sheets.in.a.
predefined.window.of.approximately.27mm.(1").length,.the.default.
starting.position.of.this.window.is.approximately.5mm.(0.2").from.the.
lead.edge.
When.Double.Detect.errors.are.sensed,.the.dialogue.displayed.will.
give.the.option.to.change.the.Double.Detect.position.
SDC820A
Remedy
Check.Double.Detect.status..
Press.the.Select Job.Screen.Key.
and.then.press.the.Job Summary.
Screen.Key.to.view.the.job.details.
Correct.loading.or.have.Supervisor.
correct.Job.Definition.as.necessary.
Material.weight.must.be.between.
60.g/m
.and.120.g/m
2
32lb)..For.material.outside.these.
limits,.turn.Double.Detect.off.
Run.a.Trial.Piece.whenever.a.
new.batch.of.material.is.loaded.to.
recalibrate.Double.Detect..The.new.
batch.might.be.of.slightly.different.
thickness.
Change.the.double-detect.position.
to.read.material.in.a.less.densely.
printed.position..See.Adjusting.
Double.Detect.Position.below.
Troubleshooting • 4
.(16lb.and.
2
Page
3-5
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2-7
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