Simple Troubleshooting - Konica Minolta bizhub C451 Copy Operations

6
6.9

Simple troubleshooting

Item
Main unit
6-74
Symptom
The machine does not
start up when the main
power switch is turned on.
Copying does not start.
The printed output is too
light.
The printed output is too
dark.
The printed output is blur-
ry.
There are dark specks or
spots throughout the print-
ed output.
There are streaks in the
printed output.
Possible cause
Is no power supplied from the elec-
trical outlet?
Has the [Power] (auxiliary power)
key been turned on?
Is the upper right-side door of the
machine open?
Is there no paper that matches the
document?
Is the copy density set too light?
Is the paper damp?
Is the copy density set too dark?
Was the document not pressed
close enough against the original
glass?
Is the paper damp?
Was the document not pressed
close enough against the original
glass?
Is the original glass dirty?
Is the left partition glass dirty?
Is the document pad dirty?
Was the original document printed
on highly translucent material,
such as diazo photosensitive pa-
per or OHP transparencies?
Is a double-sided document being
copied?
Is the electrostatic charger wire
dirty?
Troubleshooting
Remedy
Correctly insert the power supply
plug into the electrical outlet.
Turn on the [Power] (auxiliary pow-
er) key.
Securely close the upper right-side
door of the machine.
Load paper of the appropriate size
into the paper tray.
Touch [Dark] in the Density screen
to copy at the desired copy densi-
ty. (See p. 4-55.)
Replace the paper with new paper.
(See p. 3-49, p. 3-51, p. 3-52 and
p. 3-53.)
Touch [Light] in the Density screen
to copy at the desired copy densi-
ty. (See p. 4-38.)
Position the document so that it is
pressed closely against the original
glass. (See p. 4-9.)
Replace the paper with new paper.
(See p. 3-49, p. 3-51, p. 3-52 and
p. 3-53.)
Position the document so that it is
pressed closely against the original
glass. (See p. 4-9.)
Wipe the glass with a soft, dry
cloth. (See p. 11-3.)
Clean the left partition glass with
the left partition glass cleaner. (See
p. 11-3.)
Clean the document pad with a
soft cloth dampened with a mild
detergent. (See p. 11-4.)
Place a blank sheet of paper on top
of the document. (See p. 4-9.)
If a thin double-sided document is
being copied, the print on the back
side may be reproduced in the
copy. Touch [Light] on the Back-
ground Removal screen to select a
lighter background density. (See
p. 4-47.)
Use the charger-cleaning tool to
clean the electrostatic charger.
(See p. 11-5.)
bizhub C451/C550/C650