Skew Adjustment For Long Printouts - Ricoh Aficio 480W Dolphin-C2 Service Manual

28 April 2005

1. Skew adjustment for long printouts

1. Set normal weight plain paper (841 mm wide/E size, from roll 1) and print an
IPU dot pattern with SP2902-002 (IPU Print Test Pattern – Pattern 8), of length
6 m, and output to the rear exit.
2. At the rear paper exit, measure the amount of skew on the output. Make sure it
is within the standards below.
Allowed skew
3. If the amount of measured shift is not within standards, adjust the right and left
fusing pressure from the pressure roller with the following SP codes.
SP1914 002
SP1914 003
If the paper is skewed to the right, weaken the pressure on the right roller, then
increase the pressure on the left roller.
To determine if there is skew, look at the trailing edge.
The SP values must be the same size, but of opposite sign (for example, if SP
1914 002 is –10, SP 1914 003 must be + 10). The difference between the two
SP values must be less than 30.
If roller pressure adjustment is not successful, return the SP settings to their
previous values. Then do the next procedure to adjust the line speed, and then
try again to adjust roller pressure.
< 1 mm per meter
Fusing Pressure Roller Motor – Right Pressure Adjustment
Fusing Pressure Roller Motor – Left Pressure Adjustment
3-67
ADJUSTMENTS