Image Adjustment - Ricoh Aficio 240W Service Manual

SP ADJUSTMENTS
3.11 SP ADJUSTMENTS

3.11.1 IMAGE ADJUSTMENT

Do these adjustments if output is unsatisfactory. Before you start to measure and
adjust, let the test print output become cool for three minutes.
NOTE: Always do these adjustments in the sequence given in Steps 1~13 below.
Step 1: Check the Registration Line Speed
1. Do these SPs in the sequence shown in this table:
SP
SP1918 001
2. With SP2941, print Pattern 11 three times.
3. From the leading edge, measure the distance between the 2nd line and the
⇒
29th line on each pattern.
4. Make sure that the measured distance is between 151.0 and 151.5 mm.
5. If the distance is longer than 151.5 mm, adjust SP1919 until the distance is in
the correct range.
6. After adjustment, set SP1918 001 to 0.3%.
Step 2: Magnification for Paper Type: Plain
1. With SP2941 (IPU Pattern), print Pattern 11 three times.
2. Do these SPs magnification correction in the sequence shown in this table:
SP
⇒
SP4911 001
SP4911 002
B125
Setting
0% SP1918 001 (Main/Fusing Motor Setting – Speed
Reduction %)
Measure the average distance between row 20 from the leading edge to
row 204. The length must be 997 mm. Adjust this SP until the length is
997 mm, if the measured length is shorter or longer.
Measure the average distance from the edge to column 150. The width
must be 812.8 mm. Adjust this SP until the width is 812.5 mm, if the
measured width is wider or narrower.
Comments
Comments
3-78
Rev. 06/2004
SM