Paper Waving - Konica Minolta bizhub PRO C6501 Troubleshooting Manual

10 Paper waving

[Symptom]
The edge of the paper becomes wavy.
[Probable causes and solutions]
A: The paper shrinks ratio at the fusing unit is different between the center and edges of the
paper. To correct it, change Dipswitch 1-0 (To display process adjustment to user
screen) from 0(Default) to 1. Then, [Process adjustment] key is accessible from COPY
(or MACHINE) screen. (COPY (MACHINE) => [Paper Setting] => [Change] => [Process
adjustment])
At [Process adjustment] => [Compulsion OFFUpHeater >= 261mm)], reduce temperature.
If this change does not resolve, decrease overall fusing temperature with the following
procedure.
1) From COPY (MACHINE) screen => [Paper Setting] => [Change] => [Process
adjustment], decrease temperature of fusing upper/lower rollers for each tray.
2) Access Service mode => [03 System setting] => [01 Software SW Setting], Change
values for 19-1 to reduce temperature (Avoid this adjustment as much as possible.)
When combining 1) and 2), temperature can be decreased largely. Avoid using 2) as
much as possible. The rough target of the temperature decrease is 10°C (max. 20°C)
and temperature should be reduced gradually.
When changing temperature, print 20 sheets of output pattern 1 or 53 with single color
solid (Y, M, C or K) and ensure no offset due to insufficient fusing occurs.
B: When very moisture paper is used the amount of moisture which vapors during fusing
differ between center and edge of the paper and the symptom specifically noticeable.
To correct it, use the paper fresh from opening the package (containing less moisture).
C: Depending on paper type, the influence of the paper fiber is very big in some cases.
If the paper waving still occurs after decreasing fusing temperature and using paper fresh
from opening the package, propose customer to try another paper type.
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