Xerox WorkCentre Pro 412 Service Manual page 221

Fault Signs
Ghost & Image • The printed image
Contamination is too light or dark,
or partially contam-
inated black.
• Totally contaminat-
edblack.
(Black image
printed out)
WorkCentre Pro 412, FaxCentre F12 &
WorkCentre M15/M15i
Cause & Check
1. The printed image is too light or
dark, or partially contaminated
black.
(1)Check whether foreign sub
stance or toner are stuck to
the terminal(point of contact)
of the developer.
(2)Check whether the terminal
assembly is normal.
2. Totally contaminated black.
(Black image printed out)
(1)Check whether foreign sub
stances are stuck to the termi-
nal(point of contact) of the
developer and the state of
assembly.
(Especially check the charged
roller terminal.)
3/03
Maintenance & Troubleshooting
Solution
1. All of 1, 2, 3 above
(1)Remove toner and foreign substances
adhered to the contact point of the
developer.
(2)The contact point of the unit facing
that of the developer also must be
cleaned.
(3)If the terminal assembly is unsafe:
• Secure the terminal to or reassemble it
after disassembling.
• Disassemble the side plate and push
the terminal that is stuck, then reas-
semble it.
2. In case of 2
It is a phenomenon when the OPC drum
of the developer is not electrically
charged. Clean the terminals of the
charged roller, then recheck it.
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