Question about Copystar CS-1500 Copier
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Posted on Jan 02, 2017
SOURCE: c-7 990 error code
Shake the process unit from side to side
and turn the power switch off and then on.
If the problem cannot be solved, replace
the process unit.
After replacing the process unit, turn the
power switch off and then on. If the problem
cannot be solved, replace the waste
toner sensor or the engine board
Posted on Aug 19, 2009
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